COCOS-390 - Add IGVM measurement on manager (#404)

* resolved issue 390

* updated readme.md for issue 390

* resolved issue 390

* updated readme.md for issue 390

* implemented suggested changes

* refactored code so it passes the linter test

* change the Run fn so it prints the meassurement t a buffer

* refactored code so it passes the linter test

* fixed the test Run_-_Failure_Execution

* changed recipe so it builds igvmmeasure binary when building manager

.env

@@ -1,28 +0,0 @@
-## Jaeger
-COCOS_JAEGER_PORT=6831
-COCOS_JAEGER_FRONTEND=16686
-COCOS_JAEGER_COLLECTOR=14268
-COCOS_JAEGER_CONFIGS=5778
-COCOS_JAEGER_URL=http://jaeger:4318
-COCOS_JAEGER_TRACE_RATIO=1.0
-COCOS_JAEGER_COLLECTOR_OTLP_ENABLED=true
-COCOS_JAEGER_OLTP_HTTP_PORT=4318
-
-## Core Services
-
-### Manager
-MANAGER_GRPC_HOST=""
-MANAGER_GRPC_PORT=7003
-MANAGER_GRPC_SERVER_CERT=""
-MANAGER_GRPC_SERVER_KEY=""
-AGENT_GRPC_URL="localhost:7002"
-AGENT_GRPC_TIMEOUT=""
-AGENT_GRPC_CA_CERTS=""
-AGENT_GRPC_CLIENT_TLS=""
-MANAGER_INSTANCE_ID=""
-MANAGER_LOG_LEVEL=debug
-MANAGER_QEMU_USE_SUDO=false
-MANAGER_QEMU_ENABLE_SEV=false
-MANAGER_QEMU_SEV_CBITPOS=51
-MANAGER_QEMU_OVMF_CODE_FILE=/usr/share/OVMF/OVMF_CODE.fd
-MANAGER_QEMU_OVMF_VARS_FILE=/usr/share/OVMF/OVMF_VARS.fd

.github/dependabot.yaml

@@ -0,0 +1,18 @@
+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/scripts/attestation_policy"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    groups:
+      rs-dependencies:
+        patterns:
+          - "*"
+
+  - package-ecosystem: "gomod"
+    directories:
+      - "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"

.github/workflows/checkproto.yaml

@@ -29,13 +29,13 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.22.x
+          go-version: 1.23.x
 
       - name: Set up protoc
         run: |
-          PROTOC_VERSION=27.2
-          PROTOC_GEN_VERSION=v1.34.2
-          PROTOC_GRPC_VERSION=v1.4.0
+          PROTOC_VERSION=29.3
+          PROTOC_GEN_VERSION=v1.36.4
+          PROTOC_GRPC_VERSION=v1.5.1
 
           # Download and install protoc
           PROTOC_ZIP=protoc-$PROTOC_VERSION-linux-x86_64.zip
@@ -55,7 +55,7 @@ jobs:
       - name: Set up Cocos-AI
         run: |
           # Rename .pb.go files to .pb.go.tmp to prevent conflicts
-          for p in $(ls pkg/manager/*.pb.go); do
+          for p in $(ls manager/*.pb.go); do
             mv $p $p.tmp
           done
 
@@ -67,7 +67,7 @@ jobs:
           make protoc
 
           # Compare generated Go files with the original ones
-          for p in $(ls pkg/manager/*.pb.go); do
+          for p in $(ls manager/*.pb.go); do
             if ! cmp -s $p $p.tmp; then
               echo "Proto file and generated Go file $p are out of sync!"
               exit 1

.github/workflows/hal.yml

@@ -1,73 +1,80 @@
-name: Build and Release
+name: Build and Release Hal
 
 on:
   push:
     tags:
-      - '*'
+      - "*"
 
 jobs:
   build:
     runs-on: ubuntu-latest
-
+    timeout-minutes: 120
     steps:
-    - name: Update Ubuntu
-      run: |
-        sudo apt-get update
-        sudo apt-get upgrade -y
-    
-    - name: Install Go
-      uses: actions/setup-go@v5
-      with:
-        go-version: 1.22.x
-        cache-dependency-path: "go.sum"
+      - name: Free Disk Space
+        run: |
+          sudo apt-get clean
+          sudo rm -rf /usr/share/dotnet
+          sudo rm -rf /opt/ghc
+          sudo rm -rf "/usr/local/share/boost"
+          sudo rm -rf "$AGENT_TOOLSDIRECTORY"
+          df -h
 
-    - name: Checkout cocos
-      uses: actions/checkout@v4
-      with:
-        repository: 'ultravioletrs/cocos'
-        path: cocos
+      - name: Update Ubuntu
+        run: |
+          sudo apt-get update
+          sudo apt-get upgrade -y
+          sudo apt-get clean
+          sudo apt-get autoremove -y
+          df -h
 
-    - name: Checkout buildroot
-      uses: actions/checkout@v4
-      with:
-        repository: 'buildroot/buildroot'
-        path: buildroot
+      - name: Maximize build space
+        uses: easimon/maximize-build-space@master
+        with:
+          root-reserve-mb: 35000
+          swap-size-mb: 1024
+          remove-dotnet: "true"
+          remove-android: "true"
+      - name: Check free space
+        run: |
+          echo "Free space:"
+          df -h
 
-    - name: Build
-      run: |
-        cd buildroot
-        make BR2_EXTERNAL=../cocos/hal/linux cocos_defconfig
-        make
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.23.x
+          cache-dependency-path: "go.sum"
 
-    - name: Create Release
-      id: create_release
-      uses: actions/create-release@latest
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        tag_name: ${{ github.ref }}
-        release_name: Release ${{ github.ref }}
-        draft: false
-        prerelease: false
+      - name: Checkout cocos
+        uses: actions/checkout@v4
+        with:
+          repository: "ultravioletrs/cocos"
+          path: cocos
 
-    - name: Upload Release Asset
-      id: upload-release-kernel
-      uses: actions/upload-release-asset@latest
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        upload_url: ${{ steps.create_release.outputs.upload_url }}
-        asset_path: ./buildroot/output/images/bzImage
-        asset_name: bzImage
-        asset_content_type: application/octet-stream
+      - name: Checkout buildroot
+        uses: actions/checkout@v4
+        with:
+          repository: "buildroot/buildroot"
+          path: buildroot
+          ref: 2024.11-rc2
 
-    - name: Upload Release Asset
-      id: upload-release-rootfs
-      uses: actions/upload-release-asset@latest
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        upload_url: ${{ steps.create_release.outputs.upload_url }}
-        asset_path: ./buildroot/output/images/rootfs.cpio.gz
-        asset_name: rootfs.cpio.gz
-        asset_content_type: application/gzip
+      - name: Build hal
+        run: |
+          cd buildroot
+          make BR2_EXTERNAL=../cocos/hal/linux cocos_defconfig
+          make
+
+      - name: Build cocos
+        run: |
+          cd cocos
+          make
+
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            buildroot/output/images/bzImage
+            buildroot/output/images/rootfs.cpio.gz
+            cocos/build/cocos-agent  
+            cocos/build/cocos-cli  
+            cocos/build/cocos-manager

.github/workflows/main.yaml

@@ -19,16 +19,43 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.22.x
+          go-version: 1.23.x
 
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.59.1
+          version: v1.60
 
       - name: Build
         run: |
           make
 
-      - name: Run tests
-        run: go test -v --race -covermode=atomic -coverprofile cover.out ./...
+      - name: Create coverage directory
+        run: |
+          mkdir coverage
+
+      - name: Run Agent tests
+        run: go test --tags embed -v --race -covermode=atomic -coverprofile coverage/agent.out ./agent/...
+
+      - name: Run cli tests
+        run: go test -v --race -covermode=atomic -coverprofile coverage/cli.out ./cli/...
+
+      - name: Run cmd tests
+        run: go test -v --race -covermode=atomic -coverprofile coverage/cmd.out ./cmd/...
+
+      - name: Run internal tests
+        run: go test -v --race -covermode=atomic -coverprofile coverage/internal.out ./internal/...
+
+      - name: Run pkg tests
+        run: go test -v --race -covermode=atomic -coverprofile coverage/pkg.out ./pkg/...
+
+      - name: Run manager tests
+        run: sudo go test -v --race -covermode=atomic -coverprofile coverage/manager.out ./manager/...
+
+      - name: Upload results to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage/*.out
+          codecov_yml_path: codecov.yml
+          verbose: true

.github/workflows/rust.yaml

@@ -0,0 +1,41 @@
+name: Rust CI Pipeline
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "scripts/attestation_policy/**"
+      - ".github/workflows/rust.yaml"
+  pull_request:
+    branches:
+      - main
+    paths:
+      - "scripts/attestation_policy/**"
+      - ".github/workflows/rust.yaml"
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  rust-check:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./scripts/attestation_policy
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Check cargo
+        run: cargo check --release --all-targets
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Run linter
+        run: cargo clippy -- -D warnings
+
+      - name: Build for all features
+        run: cargo build --release --all-features

.gitignore

@@ -1,6 +1,5 @@
 build
 
-build
 cmd/manager/img
 
 .cov
@@ -8,5 +7,21 @@ cmd/manager/img
 *.pem
 
 dist/
-results.zip
+*.zip
 *.spec
+*.tar
+
+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb

.golangci.yaml

@@ -4,6 +4,10 @@ run:
 issues:
   max-issues-per-linter: 10
   max-same-issues: 10
+  exclude-rules:
+    - linters:
+        - makezero
+      text: "with non-zero initialized length"
 
 linters-settings:
   importas:
@@ -67,8 +71,7 @@ linters:
     - dogsled
     - errchkjson
     - errname
-    - execinquery
-    - exportloopref
+    - copyloopvar
     - ginkgolinter
     - gocheckcompilerdirectives
     - gofumpt
@@ -78,3 +81,4 @@ linters:
     - mirror
     - nakedret
     - dupword
+

Makefile

@@ -1,12 +1,18 @@
 BUILD_DIR = build
 SERVICES = manager agent cli
-BACKEND_INFO = backend_info
-CGO_ENABLED ?= 0
+ATTESTATION_POLICY = attestation_policy
+CGO_ENABLED ?= 1
 GOARCH ?= amd64
 VERSION ?= $(shell git describe --abbrev=0 --tags --always)
 COMMIT ?= $(shell git rev-parse HEAD)
 TIME ?= $(shell date +%F_%T)
 EMBED_ENABLED ?= 0
+INSTALL_DIR ?= /usr/local/bin
+CONFIG_DIR ?= /etc/cocos
+SERVICE_NAME ?= cocos-manager
+SERVICE_DIR ?= /etc/systemd/system
+SERVICE_FILE = init/systemd/$(SERVICE_NAME).service
+IGVM_BUILD_SCRIPT := ./scripts/igvmmeasure/igvm.sh
 
 define compile_service
 	CGO_ENABLED=$(CGO_ENABLED) GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM) \
@@ -18,19 +24,46 @@ define compile_service
 	-o ${BUILD_DIR}/cocos-$(1) cmd/$(1)/main.go
 endef
 
-.PHONY: all $(SERVICES) $(BACKEND_INFO)
+.PHONY: all $(SERVICES) $(ATTESTATION_POLICY) install clean
 
 all: $(SERVICES)
 
-$(SERVICES):
+$(SERVICES): 
 	$(call compile_service,$@)
+	@if [ "$@" = "cli" ] || [ "$@" = "manager" ]; then $(MAKE) build-igvm; fi
 
-$(BACKEND_INFO):
-	$(MAKE) -C ./scripts/backend_info
+$(ATTESTATION_POLICY):
+	$(MAKE) -C ./scripts/attestation_policy
 
 protoc:
 	protoc -I. --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative agent/agent.proto
-	protoc -I. --go_out=./pkg --go_opt=paths=source_relative --go-grpc_out=./pkg --go-grpc_opt=paths=source_relative manager/manager.proto
+	protoc -I. --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative manager/manager.proto
+	protoc -I. --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative agent/events/events.proto
+	protoc -I. --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative agent/cvms/cvms.proto
 
 mocks:
-	go generate ./...
+	mockery --config ./mockery.yml
+
+install: $(SERVICES)
+	install -d $(INSTALL_DIR)
+	install $(BUILD_DIR)/cocos-cli $(INSTALL_DIR)/cocos-cli
+	install $(BUILD_DIR)/cocos-manager $(INSTALL_DIR)/cocos-manager
+	install -d $(CONFIG_DIR)
+	install cocos-manager.env $(CONFIG_DIR)/cocos-manager.env
+
+clean:
+	rm -rf $(BUILD_DIR)
+
+run: install_service
+	sudo systemctl start $(SERVICE_NAME).service
+
+stop:
+	sudo systemctl stop $(SERVICE_NAME).service
+
+install_service:
+	sudo install -m 644 $(SERVICE_FILE) $(SERVICE_DIR)/$(SERVICE_NAME).service
+	sudo systemctl daemon-reload
+
+build-igvm:
+	@echo "Running build script for igvmmeasure..."
+	@$(IGVM_BUILD_SCRIPT)

README.md

@@ -1,61 +1,78 @@
-# Cocos AI
-[Cocos AI (Confdential Computing System for AI/ML)][cocos] is a platform for secure multiparty computation (SMPC)
-based on the [Confidential Computing][cc] and [Trusted Execution Environments (TEEs)][tee].
+<div align="center">
+
+# Cocos AI 🥥
+
+**Confidential Computing System for AI**
+
+**Made with ❤️ by [Ultraviolet](https://ultraviolet.rs/)**
+
+[![codecov](https://codecov.io/gh/ultravioletrs/cocos/graph/badge.svg?token=HX01LR01K9)](https://codecov.io/gh/ultravioletrs/cocos)
+[![Go report card](https://goreportcard.com/badge/github.com/ultravioletrs/cocos)](https://goreportcard.com/report/github.com/ultravioletrs/cocos)
+[![License](https://img.shields.io/badge/license-Apache--2.0-blue)](LICENSE)
+
+### [Guide](https://docs.cocos.ultraviolet.rs) | [Contributing](CONTRIBUTING.md) | [Website](https://cocos.ai/)
+
+</div>
+
+## Introduction 🚀
+
+Cocos AI is a **cutting-edge platform** designed to enable secure multiparty computation (SMPC) using **Confidential Computing** and **Trusted Execution Environments (TEEs)**.
+
+It empowers organizations to collaboratively process sensitive data for AI/ML workloads while ensuring:
+
+- 🔒 **Data Privacy**: Your data stays encrypted and secure throughout the computation.
+- 🛡️ **Trust and Integrity**: Protected by hardware enclaves with robust remote attestation protocols.
+- 🤝 **Seamless Collaboration**: Multiple organizations can work together without exposing sensitive information.
 
 <p align="center">
-  <img src="https://cocos.ai/images/Collaborative%20AI.drawio.svg" width="500" height="500">
+  <img src="https://cocos.ai/images/Collaborative%20AI.drawio.svg" alt="Cocos AI Illustration" width="400" height="400">
 </p>
 
-With Cocos AI it becomes possible to run AI/ML workloads on combined datasets from multiple organizations
-while guaranteeing the privacy and security of the data and the algorithm.
-Data is always encrypted, protected by hardware secure enclaves (Trusted Execution Environments),
-attested via secure remote attestation protocols, and invisible to cloud processors or any other
-3rd party to which computation is offloaded.
+## Features 🛠️
 
-## Features
+Cocos AI provides essential features for secure and efficient collaborative AI/ML:
 
-Cocos AI is implementing the following features:
+- 🖥️ **TEE Enablement and Monitoring**: Secure VM management for deploying and monitoring workloads.
+- 🛡️ **Hardware Abstraction Layer (HAL)**: Built on a hardened Linux kernel, secure bootloader, and minimal root filesystem (minimal TCB).
+- 🕵️ **In-Enclave Agent and Networking Controller**: Essential system software for managing secure workloads.
+- 🔒 **Encrypted Data Transfer**: Asynchronous data transfer and secure result delivery.
+- 🛠️ **API for Platform Manipulation**: Programmatic control for managing workloads.
+- ✅ **Attestation and Verification Tools**: Hardware- and software-supported attestation for integrity assurance.
+- 🖱️ **Command-Line Interface (CLI)**: A user-friendly CLI for system interaction.
 
-- TEE enablement, deployment and monitoring (secure VM manager)
-- HAL for TEEs based on hardened Linux kernel, secure bootloader and custom-tailored embedded rootfs for minimal TCB
-- In-enclave agent, netowrking controller and other system software
-- Encrypted asynchronous data transfer and result delivery
-- API for programmable platform manipulation
-- HW and SW supported attestation with verification tools
-- CLI for system interaction
-
-## Usage
-
-Clone the repo and create binaries:
+## 🚀 Quick Start
 
+### Clone the Repository and Build Binaries
 ```bash
 git clone git@github.com:ultravioletrs/cocos.git
 make
 ```
 
-This will create 3 binaries:
+This will generate three binaries:
 ```bash
 ls build/
 # cocos-agent  cocos-cli  cocos-manager
 ```
 
-- Manager can be deployed on the AMD SEV-SNP host
-- Agent can be built into [EOS][eos]-based HAL
-- CLI can be used to communicate to remote Agent.
+### Deployment Overview:
+- **Manager**: Deploy on the AMD SEV-SNP host to orchestrate workloads.
+- **Agent**: Build into the [EOS](https://github.com/ultravioletrs/eos)-based HAL for secure enclave management.
+- **CLI**: Interact with remote agents to control operations.
 
-## Documentation
+## 📚 Documentation
 
-Project documentation is hosted at [Cocos AI official docs page][docs].
+Comprehensive documentation is available at the [official documentation page](https://docs.cocos.ultraviolet.rs).  
+For CLI usage details, visit the [CLI Documentation](https://docs.cocos.ultraviolet.rs/cli).
 
-Documentation is generated from the [docs repository](https://github.com/ultravioletrs/docs).
+Documentation is automatically generated from the [docs repository](https://github.com/ultravioletrs/docs). Contributions to documentation are welcome!
 
-## License
-Cocos AI is published under permissive open-source [Apache-2.0](LICENSE) license.
+## 🛡️ License
 
-[cc]: https://confidentialcomputing.io/white-papers-reports/
-[cocos]: https://cocos.ai/
-[rel]: https://github.com/ultravioletrs/cocos/releases
-[tee]: https://en.wikipedia.org/wiki/Trusted_execution_environment
-[docs]: https://docs.cocos.ultraviolet.rs
-[cli]: https://docs.cocos.ultraviolet.rs/cli
-[eos]: https://github.com/ultravioletrs/eos
+Cocos AI is published under the permissive open-source [Apache-2.0](LICENSE) license. Contributions are encouraged and appreciated!
+
+## 🌐 Links and Resources
+
+- [Cocos AI Website](https://cocos.ai/)
+- [Official Releases](https://github.com/ultravioletrs/cocos/releases)
+- [Confidential Computing Overview](https://confidentialcomputing.io/white-papers-reports/)
+- [Trusted Execution Environments (TEEs)](https://en.wikipedia.org/wiki/Trusted_execution_environment)

agent/README.md

@@ -6,15 +6,15 @@ Agent service provides a barebones HTTP and gRPC API and Service interface imple
 
 The service is configured using the environment variables from the following table. Note that any unset variables will be replaced with their default values.
 
-| Variable                      | Description                                            | Default                        |
-| ----------------------------- | ------------------------------------------------------ | ------------------------------ |
-| AGENT_LOG_LEVEL               | Log level for agent service (debug, info, warn, error) | info                           |
-| AGENT_GRPC_HOST               | Agent service gRPC host                                | ""                             |
-| AGENT_GRPC_PORT               | Agent service gRPC port                                | 7002                           |
-| AGENT_GRPC_SERVER_CERT        | Path to gRPC server certificate in pem format          | ""                             |
-| AGENT_GRPC_SERVER_KEY         | Path to gRPC server key in pem format                  | ""                             |
-| AGENT_GRPC_SERVER_CA_CERTS    | Path to gRPC server CA certificate                     | ""                             |
-| AGENT_GRPC_CLIENT_CA_CERTS    | Path to gRPC client CA certificate                     | ""                             |
+| Variable                       | Description                                            | Default                        |
+| ------------------------------ | ------------------------------------------------------ | ------------------------------ |
+| AGENT_LOG_LEVEL                | Log level for agent service (debug, info, warn, error) | debug                          |
+| AGENT_CVM_GRPC_HOST            | Agent service gRPC host                                | ""                             |
+| AGENT_CVM_GRPC_PORT            | Agent service gRPC port                                | 7001                           |
+| AGENT_CVM_GRPC_SERVER_CERT     | Path to gRPC server certificate in pem format          | ""                             |
+| AGENT_CVM_GRPC_SERVER_KEY      | Path to gRPC server key in pem format                  | ""                             |
+| AGENT_CVM_GRPC_SERVER_CA_CERTS | Path to gRPC server CA certificate                     | ""                             |
+| AGENT_CVM_GRPC_CLIENT_CA_CERTS | Path to gRPC client CA certificate                     | ""                             |
 
 
 ## Deployment

agent/agent.pb.go

@@ -3,8 +3,8 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.2
-// 	protoc        v5.27.2
+// 	protoc-gen-go v1.36.4
+// 	protoc        v5.29.3
 // source: agent/agent.proto
 
 package agent
@@ -14,6 +14,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -24,21 +25,18 @@ const (
 )
 
 type AlgoRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Algorithm     []byte                 `protobuf:"bytes,1,opt,name=algorithm,proto3" json:"algorithm,omitempty"`
+	Requirements  []byte                 `protobuf:"bytes,2,opt,name=requirements,proto3" json:"requirements,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Algorithm    []byte `protobuf:"bytes,1,opt,name=algorithm,proto3" json:"algorithm,omitempty"`
-	Requirements []byte `protobuf:"bytes,2,opt,name=requirements,proto3" json:"requirements,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *AlgoRequest) Reset() {
 	*x = AlgoRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_agent_agent_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_agent_agent_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *AlgoRequest) String() string {
@@ -49,7 +47,7 @@ func (*AlgoRequest) ProtoMessage() {}
 
 func (x *AlgoRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_agent_agent_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -79,18 +77,16 @@ func (x *AlgoRequest) GetRequirements() []byte {
 }
 
 type AlgoResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *AlgoResponse) Reset() {
 	*x = AlgoResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_agent_agent_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_agent_agent_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *AlgoResponse) String() string {
@@ -101,7 +97,7 @@ func (*AlgoResponse) ProtoMessage() {}
 
 func (x *AlgoResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_agent_agent_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -117,21 +113,18 @@ func (*AlgoResponse) Descriptor() ([]byte, []int) {
 }
 
 type DataRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Dataset       []byte                 `protobuf:"bytes,1,opt,name=dataset,proto3" json:"dataset,omitempty"`
+	Filename      string                 `protobuf:"bytes,2,opt,name=filename,proto3" json:"filename,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Dataset  []byte `protobuf:"bytes,1,opt,name=dataset,proto3" json:"dataset,omitempty"`
-	Filename string `protobuf:"bytes,2,opt,name=filename,proto3" json:"filename,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *DataRequest) Reset() {
 	*x = DataRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_agent_agent_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_agent_agent_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *DataRequest) String() string {
@@ -142,7 +135,7 @@ func (*DataRequest) ProtoMessage() {}
 
 func (x *DataRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_agent_agent_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -172,18 +165,16 @@ func (x *DataRequest) GetFilename() string {
 }
 
 type DataResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *DataResponse) Reset() {
 	*x = DataResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_agent_agent_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_agent_agent_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *DataResponse) String() string {
@@ -194,7 +185,7 @@ func (*DataResponse) ProtoMessage() {}
 
 func (x *DataResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_agent_agent_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -210,18 +201,16 @@ func (*DataResponse) Descriptor() ([]byte, []int) {
 }
 
 type ResultRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *ResultRequest) Reset() {
 	*x = ResultRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_agent_agent_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_agent_agent_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ResultRequest) String() string {
@@ -232,7 +221,7 @@ func (*ResultRequest) ProtoMessage() {}
 
 func (x *ResultRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_agent_agent_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -248,20 +237,17 @@ func (*ResultRequest) Descriptor() ([]byte, []int) {
 }
 
 type ResultResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	File          []byte                 `protobuf:"bytes,1,opt,name=file,proto3" json:"file,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	File []byte `protobuf:"bytes,1,opt,name=file,proto3" json:"file,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *ResultResponse) Reset() {
 	*x = ResultResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_agent_agent_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_agent_agent_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ResultResponse) String() string {
@@ -272,7 +258,7 @@ func (*ResultResponse) ProtoMessage() {}
 
 func (x *ResultResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_agent_agent_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -295,20 +281,19 @@ func (x *ResultResponse) GetFile() []byte {
 }
 
 type AttestationRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	TeeNonce      []byte                 `protobuf:"bytes,1,opt,name=teeNonce,proto3" json:"teeNonce,omitempty"`   // Should be less or equal 64 bytes.
+	VtpmNonce     []byte                 `protobuf:"bytes,2,opt,name=vtpmNonce,proto3" json:"vtpmNonce,omitempty"` // Should be less or equal 32 bytes.
+	Type          int32                  `protobuf:"varint,3,opt,name=type,proto3" json:"type,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	ReportData []byte `protobuf:"bytes,1,opt,name=report_data,json=reportData,proto3" json:"report_data,omitempty"` // Should be of length 64.
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *AttestationRequest) Reset() {
 	*x = AttestationRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_agent_agent_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_agent_agent_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *AttestationRequest) String() string {
@@ -319,7 +304,7 @@ func (*AttestationRequest) ProtoMessage() {}
 
 func (x *AttestationRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_agent_agent_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -334,28 +319,39 @@ func (*AttestationRequest) Descriptor() ([]byte, []int) {
 	return file_agent_agent_proto_rawDescGZIP(), []int{6}
 }
 
-func (x *AttestationRequest) GetReportData() []byte {
+func (x *AttestationRequest) GetTeeNonce() []byte {
 	if x != nil {
-		return x.ReportData
+		return x.TeeNonce
 	}
 	return nil
 }
 
-type AttestationResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
+func (x *AttestationRequest) GetVtpmNonce() []byte {
+	if x != nil {
+		return x.VtpmNonce
+	}
+	return nil
+}
 
-	File []byte `protobuf:"bytes,1,opt,name=file,proto3" json:"file,omitempty"`
+func (x *AttestationRequest) GetType() int32 {
+	if x != nil {
+		return x.Type
+	}
+	return 0
+}
+
+type AttestationResponse struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	File          []byte                 `protobuf:"bytes,1,opt,name=file,proto3" json:"file,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *AttestationResponse) Reset() {
 	*x = AttestationResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_agent_agent_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_agent_agent_proto_msgTypes[7]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *AttestationResponse) String() string {
@@ -366,7 +362,7 @@ func (*AttestationResponse) ProtoMessage() {}
 
 func (x *AttestationResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_agent_agent_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -390,7 +386,7 @@ func (x *AttestationResponse) GetFile() []byte {
 
 var File_agent_agent_proto protoreflect.FileDescriptor
 
-var file_agent_agent_proto_rawDesc = []byte{
+var file_agent_agent_proto_rawDesc = string([]byte{
 	0x0a, 0x11, 0x61, 0x67, 0x65, 0x6e, 0x74, 0x2f, 0x61, 0x67, 0x65, 0x6e, 0x74, 0x2e, 0x70, 0x72,
 	0x6f, 0x74, 0x6f, 0x12, 0x05, 0x61, 0x67, 0x65, 0x6e, 0x74, 0x22, 0x4f, 0x0a, 0x0b, 0x41, 0x6c,
 	0x67, 0x6f, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x1c, 0x0a, 0x09, 0x61, 0x6c, 0x67,
@@ -407,40 +403,43 @@ var file_agent_agent_proto_rawDesc = []byte{
 	0x22, 0x0f, 0x0a, 0x0d, 0x52, 0x65, 0x73, 0x75, 0x6c, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
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-}
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+	0x74, 0x74, 0x65, 0x73, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
+	0x73, 0x65, 0x22, 0x00, 0x30, 0x01, 0x42, 0x09, 0x5a, 0x07, 0x2e, 0x2f, 0x61, 0x67, 0x65, 0x6e,
+	0x74, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+})
 
 var (
 	file_agent_agent_proto_rawDescOnce sync.Once
-	file_agent_agent_proto_rawDescData = file_agent_agent_proto_rawDesc
+	file_agent_agent_proto_rawDescData []byte
 )
 
 func file_agent_agent_proto_rawDescGZIP() []byte {
 	file_agent_agent_proto_rawDescOnce.Do(func() {
-		file_agent_agent_proto_rawDescData = protoimpl.X.CompressGZIP(file_agent_agent_proto_rawDescData)
+		file_agent_agent_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_agent_agent_proto_rawDesc), len(file_agent_agent_proto_rawDesc)))
 	})
 	return file_agent_agent_proto_rawDescData
 }
@@ -477,109 +476,11 @@ func file_agent_agent_proto_init() {
 	if File_agent_agent_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_agent_agent_proto_msgTypes[0].Exporter = func(v any, i int) any {
-			switch v := v.(*AlgoRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_agent_agent_proto_msgTypes[1].Exporter = func(v any, i int) any {
-			switch v := v.(*AlgoResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_agent_agent_proto_msgTypes[2].Exporter = func(v any, i int) any {
-			switch v := v.(*DataRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_agent_agent_proto_msgTypes[3].Exporter = func(v any, i int) any {
-			switch v := v.(*DataResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_agent_agent_proto_msgTypes[4].Exporter = func(v any, i int) any {
-			switch v := v.(*ResultRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_agent_agent_proto_msgTypes[5].Exporter = func(v any, i int) any {
-			switch v := v.(*ResultResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_agent_agent_proto_msgTypes[6].Exporter = func(v any, i int) any {
-			switch v := v.(*AttestationRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_agent_agent_proto_msgTypes[7].Exporter = func(v any, i int) any {
-			switch v := v.(*AttestationResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_agent_agent_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_agent_agent_proto_rawDesc), len(file_agent_agent_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   8,
 			NumExtensions: 0,
@@ -590,7 +491,6 @@ func file_agent_agent_proto_init() {
 		MessageInfos:      file_agent_agent_proto_msgTypes,
 	}.Build()
 	File_agent_agent_proto = out.File
-	file_agent_agent_proto_rawDesc = nil
 	file_agent_agent_proto_goTypes = nil
 	file_agent_agent_proto_depIdxs = nil
 }

agent/agent.proto

@@ -11,7 +11,7 @@ service AgentService {
   rpc Algo(stream AlgoRequest) returns (AlgoResponse) {}
   rpc Data(stream DataRequest) returns (DataResponse) {}
   rpc Result(ResultRequest) returns (stream ResultResponse) {}
-  rpc Attestation(AttestationRequest) returns (AttestationResponse) {}
+  rpc Attestation(AttestationRequest) returns (stream AttestationResponse) {}
 }
 
 message AlgoRequest {
@@ -36,7 +36,9 @@ message ResultResponse {
 }
 
 message AttestationRequest {
-  bytes report_data = 1; // Should be of length 64.
+  bytes teeNonce = 1; // Should be less or equal 64 bytes.
+  bytes vtpmNonce = 2; // Should be less or equal 32 bytes.
+  int32 type = 3;
 }
 
 message AttestationResponse {

agent/agent_grpc.pb.go

@@ -3,8 +3,8 @@
 
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.4.0
-// - protoc             v5.27.2
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.29.3
 // source: agent/agent.proto
 
 package agent
@@ -18,8 +18,8 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.62.0 or later.
-const _ = grpc.SupportPackageIsVersion8
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
 
 const (
 	AgentService_Algo_FullMethodName        = "/agent.AgentService/Algo"
@@ -32,10 +32,10 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type AgentServiceClient interface {
-	Algo(ctx context.Context, opts ...grpc.CallOption) (AgentService_AlgoClient, error)
-	Data(ctx context.Context, opts ...grpc.CallOption) (AgentService_DataClient, error)
-	Result(ctx context.Context, in *ResultRequest, opts ...grpc.CallOption) (AgentService_ResultClient, error)
-	Attestation(ctx context.Context, in *AttestationRequest, opts ...grpc.CallOption) (*AttestationResponse, error)
+	Algo(ctx context.Context, opts ...grpc.CallOption) (grpc.ClientStreamingClient[AlgoRequest, AlgoResponse], error)
+	Data(ctx context.Context, opts ...grpc.CallOption) (grpc.ClientStreamingClient[DataRequest, DataResponse], error)
+	Result(ctx context.Context, in *ResultRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[ResultResponse], error)
+	Attestation(ctx context.Context, in *AttestationRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[AttestationResponse], error)
 }
 
 type agentServiceClient struct {
@@ -46,83 +46,39 @@ func NewAgentServiceClient(cc grpc.ClientConnInterface) AgentServiceClient {
 	return &agentServiceClient{cc}
 }
 
-func (c *agentServiceClient) Algo(ctx context.Context, opts ...grpc.CallOption) (AgentService_AlgoClient, error) {
+func (c *agentServiceClient) Algo(ctx context.Context, opts ...grpc.CallOption) (grpc.ClientStreamingClient[AlgoRequest, AlgoResponse], error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	stream, err := c.cc.NewStream(ctx, &AgentService_ServiceDesc.Streams[0], AgentService_Algo_FullMethodName, cOpts...)
 	if err != nil {
 		return nil, err
 	}
-	x := &agentServiceAlgoClient{ClientStream: stream}
+	x := &grpc.GenericClientStream[AlgoRequest, AlgoResponse]{ClientStream: stream}
 	return x, nil
 }
 
-type AgentService_AlgoClient interface {
-	Send(*AlgoRequest) error
-	CloseAndRecv() (*AlgoResponse, error)
-	grpc.ClientStream
-}
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type AgentService_AlgoClient = grpc.ClientStreamingClient[AlgoRequest, AlgoResponse]
 
-type agentServiceAlgoClient struct {
-	grpc.ClientStream
-}
-
-func (x *agentServiceAlgoClient) Send(m *AlgoRequest) error {
-	return x.ClientStream.SendMsg(m)
-}
-
-func (x *agentServiceAlgoClient) CloseAndRecv() (*AlgoResponse, error) {
-	if err := x.ClientStream.CloseSend(); err != nil {
-		return nil, err
-	}
-	m := new(AlgoResponse)
-	if err := x.ClientStream.RecvMsg(m); err != nil {
-		return nil, err
-	}
-	return m, nil
-}
-
-func (c *agentServiceClient) Data(ctx context.Context, opts ...grpc.CallOption) (AgentService_DataClient, error) {
+func (c *agentServiceClient) Data(ctx context.Context, opts ...grpc.CallOption) (grpc.ClientStreamingClient[DataRequest, DataResponse], error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	stream, err := c.cc.NewStream(ctx, &AgentService_ServiceDesc.Streams[1], AgentService_Data_FullMethodName, cOpts...)
 	if err != nil {
 		return nil, err
 	}
-	x := &agentServiceDataClient{ClientStream: stream}
+	x := &grpc.GenericClientStream[DataRequest, DataResponse]{ClientStream: stream}
 	return x, nil
 }
 
-type AgentService_DataClient interface {
-	Send(*DataRequest) error
-	CloseAndRecv() (*DataResponse, error)
-	grpc.ClientStream
-}
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type AgentService_DataClient = grpc.ClientStreamingClient[DataRequest, DataResponse]
 
-type agentServiceDataClient struct {
-	grpc.ClientStream
-}
-
-func (x *agentServiceDataClient) Send(m *DataRequest) error {
-	return x.ClientStream.SendMsg(m)
-}
-
-func (x *agentServiceDataClient) CloseAndRecv() (*DataResponse, error) {
-	if err := x.ClientStream.CloseSend(); err != nil {
-		return nil, err
-	}
-	m := new(DataResponse)
-	if err := x.ClientStream.RecvMsg(m); err != nil {
-		return nil, err
-	}
-	return m, nil
-}
-
-func (c *agentServiceClient) Result(ctx context.Context, in *ResultRequest, opts ...grpc.CallOption) (AgentService_ResultClient, error) {
+func (c *agentServiceClient) Result(ctx context.Context, in *ResultRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[ResultResponse], error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	stream, err := c.cc.NewStream(ctx, &AgentService_ServiceDesc.Streams[2], AgentService_Result_FullMethodName, cOpts...)
 	if err != nil {
 		return nil, err
 	}
-	x := &agentServiceResultClient{ClientStream: stream}
+	x := &grpc.GenericClientStream[ResultRequest, ResultResponse]{ClientStream: stream}
 	if err := x.ClientStream.SendMsg(in); err != nil {
 		return nil, err
 	}
@@ -132,61 +88,60 @@ func (c *agentServiceClient) Result(ctx context.Context, in *ResultRequest, opts
 	return x, nil
 }
 
-type AgentService_ResultClient interface {
-	Recv() (*ResultResponse, error)
-	grpc.ClientStream
-}
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type AgentService_ResultClient = grpc.ServerStreamingClient[ResultResponse]
 
-type agentServiceResultClient struct {
-	grpc.ClientStream
-}
-
-func (x *agentServiceResultClient) Recv() (*ResultResponse, error) {
-	m := new(ResultResponse)
-	if err := x.ClientStream.RecvMsg(m); err != nil {
-		return nil, err
-	}
-	return m, nil
-}
-
-func (c *agentServiceClient) Attestation(ctx context.Context, in *AttestationRequest, opts ...grpc.CallOption) (*AttestationResponse, error) {
+func (c *agentServiceClient) Attestation(ctx context.Context, in *AttestationRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[AttestationResponse], error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(AttestationResponse)
-	err := c.cc.Invoke(ctx, AgentService_Attestation_FullMethodName, in, out, cOpts...)
+	stream, err := c.cc.NewStream(ctx, &AgentService_ServiceDesc.Streams[3], AgentService_Attestation_FullMethodName, cOpts...)
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	x := &grpc.GenericClientStream[AttestationRequest, AttestationResponse]{ClientStream: stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
 }
 
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type AgentService_AttestationClient = grpc.ServerStreamingClient[AttestationResponse]
+
 // AgentServiceServer is the server API for AgentService service.
 // All implementations must embed UnimplementedAgentServiceServer
-// for forward compatibility
+// for forward compatibility.
 type AgentServiceServer interface {
-	Algo(AgentService_AlgoServer) error
-	Data(AgentService_DataServer) error
-	Result(*ResultRequest, AgentService_ResultServer) error
-	Attestation(context.Context, *AttestationRequest) (*AttestationResponse, error)
+	Algo(grpc.ClientStreamingServer[AlgoRequest, AlgoResponse]) error
+	Data(grpc.ClientStreamingServer[DataRequest, DataResponse]) error
+	Result(*ResultRequest, grpc.ServerStreamingServer[ResultResponse]) error
+	Attestation(*AttestationRequest, grpc.ServerStreamingServer[AttestationResponse]) error
 	mustEmbedUnimplementedAgentServiceServer()
 }
 
-// UnimplementedAgentServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedAgentServiceServer struct {
-}
+// UnimplementedAgentServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedAgentServiceServer struct{}
 
-func (UnimplementedAgentServiceServer) Algo(AgentService_AlgoServer) error {
+func (UnimplementedAgentServiceServer) Algo(grpc.ClientStreamingServer[AlgoRequest, AlgoResponse]) error {
 	return status.Errorf(codes.Unimplemented, "method Algo not implemented")
 }
-func (UnimplementedAgentServiceServer) Data(AgentService_DataServer) error {
+func (UnimplementedAgentServiceServer) Data(grpc.ClientStreamingServer[DataRequest, DataResponse]) error {
 	return status.Errorf(codes.Unimplemented, "method Data not implemented")
 }
-func (UnimplementedAgentServiceServer) Result(*ResultRequest, AgentService_ResultServer) error {
+func (UnimplementedAgentServiceServer) Result(*ResultRequest, grpc.ServerStreamingServer[ResultResponse]) error {
 	return status.Errorf(codes.Unimplemented, "method Result not implemented")
 }
-func (UnimplementedAgentServiceServer) Attestation(context.Context, *AttestationRequest) (*AttestationResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Attestation not implemented")
+func (UnimplementedAgentServiceServer) Attestation(*AttestationRequest, grpc.ServerStreamingServer[AttestationResponse]) error {
+	return status.Errorf(codes.Unimplemented, "method Attestation not implemented")
 }
 func (UnimplementedAgentServiceServer) mustEmbedUnimplementedAgentServiceServer() {}
+func (UnimplementedAgentServiceServer) testEmbeddedByValue()                      {}
 
 // UnsafeAgentServiceServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to AgentServiceServer will
@@ -196,99 +151,51 @@ type UnsafeAgentServiceServer interface {
 }
 
 func RegisterAgentServiceServer(s grpc.ServiceRegistrar, srv AgentServiceServer) {
+	// If the following call pancis, it indicates UnimplementedAgentServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
 	s.RegisterService(&AgentService_ServiceDesc, srv)
 }
 
 func _AgentService_Algo_Handler(srv interface{}, stream grpc.ServerStream) error {
-	return srv.(AgentServiceServer).Algo(&agentServiceAlgoServer{ServerStream: stream})
+	return srv.(AgentServiceServer).Algo(&grpc.GenericServerStream[AlgoRequest, AlgoResponse]{ServerStream: stream})
 }
 
-type AgentService_AlgoServer interface {
-	SendAndClose(*AlgoResponse) error
-	Recv() (*AlgoRequest, error)
-	grpc.ServerStream
-}
-
-type agentServiceAlgoServer struct {
-	grpc.ServerStream
-}
-
-func (x *agentServiceAlgoServer) SendAndClose(m *AlgoResponse) error {
-	return x.ServerStream.SendMsg(m)
-}
-
-func (x *agentServiceAlgoServer) Recv() (*AlgoRequest, error) {
-	m := new(AlgoRequest)
-	if err := x.ServerStream.RecvMsg(m); err != nil {
-		return nil, err
-	}
-	return m, nil
-}
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type AgentService_AlgoServer = grpc.ClientStreamingServer[AlgoRequest, AlgoResponse]
 
 func _AgentService_Data_Handler(srv interface{}, stream grpc.ServerStream) error {
-	return srv.(AgentServiceServer).Data(&agentServiceDataServer{ServerStream: stream})
+	return srv.(AgentServiceServer).Data(&grpc.GenericServerStream[DataRequest, DataResponse]{ServerStream: stream})
 }
 
-type AgentService_DataServer interface {
-	SendAndClose(*DataResponse) error
-	Recv() (*DataRequest, error)
-	grpc.ServerStream
-}
-
-type agentServiceDataServer struct {
-	grpc.ServerStream
-}
-
-func (x *agentServiceDataServer) SendAndClose(m *DataResponse) error {
-	return x.ServerStream.SendMsg(m)
-}
-
-func (x *agentServiceDataServer) Recv() (*DataRequest, error) {
-	m := new(DataRequest)
-	if err := x.ServerStream.RecvMsg(m); err != nil {
-		return nil, err
-	}
-	return m, nil
-}
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type AgentService_DataServer = grpc.ClientStreamingServer[DataRequest, DataResponse]
 
 func _AgentService_Result_Handler(srv interface{}, stream grpc.ServerStream) error {
 	m := new(ResultRequest)
 	if err := stream.RecvMsg(m); err != nil {
 		return err
 	}
-	return srv.(AgentServiceServer).Result(m, &agentServiceResultServer{ServerStream: stream})
+	return srv.(AgentServiceServer).Result(m, &grpc.GenericServerStream[ResultRequest, ResultResponse]{ServerStream: stream})
 }
 
-type AgentService_ResultServer interface {
-	Send(*ResultResponse) error
-	grpc.ServerStream
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type AgentService_ResultServer = grpc.ServerStreamingServer[ResultResponse]
+
+func _AgentService_Attestation_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(AttestationRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(AgentServiceServer).Attestation(m, &grpc.GenericServerStream[AttestationRequest, AttestationResponse]{ServerStream: stream})
 }
 
-type agentServiceResultServer struct {
-	grpc.ServerStream
-}
-
-func (x *agentServiceResultServer) Send(m *ResultResponse) error {
-	return x.ServerStream.SendMsg(m)
-}
-
-func _AgentService_Attestation_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(AttestationRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(AgentServiceServer).Attestation(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: AgentService_Attestation_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(AgentServiceServer).Attestation(ctx, req.(*AttestationRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type AgentService_AttestationServer = grpc.ServerStreamingServer[AttestationResponse]
 
 // AgentService_ServiceDesc is the grpc.ServiceDesc for AgentService service.
 // It's only intended for direct use with grpc.RegisterService,
@@ -296,12 +203,7 @@ func _AgentService_Attestation_Handler(srv interface{}, ctx context.Context, dec
 var AgentService_ServiceDesc = grpc.ServiceDesc{
 	ServiceName: "agent.AgentService",
 	HandlerType: (*AgentServiceServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "Attestation",
-			Handler:    _AgentService_Attestation_Handler,
-		},
-	},
+	Methods:     []grpc.MethodDesc{},
 	Streams: []grpc.StreamDesc{
 		{
 			StreamName:    "Algo",
@@ -318,6 +220,11 @@ var AgentService_ServiceDesc = grpc.ServiceDesc{
 			Handler:       _AgentService_Result_Handler,
 			ServerStreams: true,
 		},
+		{
+			StreamName:    "Attestation",
+			Handler:       _AgentService_Attestation_Handler,
+			ServerStreams: true,
+		},
 	},
 	Metadata: "agent/agent.proto",
 }

agent/agentevent_string.go

@@ -0,0 +1,29 @@
+// Code generated by "stringer -type=AgentEvent"; DO NOT EDIT.
+
+package agent
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[Start-0]
+	_ = x[ManifestReceived-1]
+	_ = x[AlgorithmReceived-2]
+	_ = x[DataReceived-3]
+	_ = x[RunComplete-4]
+	_ = x[ResultsConsumed-5]
+	_ = x[RunFailed-6]
+}
+
+const _AgentEvent_name = "StartManifestReceivedAlgorithmReceivedDataReceivedRunCompleteResultsConsumedRunFailed"
+
+var _AgentEvent_index = [...]uint8{0, 5, 21, 38, 50, 61, 76, 85}
+
+func (i AgentEvent) String() string {
+	if i < 0 || i >= AgentEvent(len(_AgentEvent_index)-1) {
+		return "AgentEvent(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _AgentEvent_name[_AgentEvent_index[i]:_AgentEvent_index[i+1]]
+}

agent/agentstate_string.go

@@ -0,0 +1,30 @@
+// Code generated by "stringer -type=AgentState"; DO NOT EDIT.
+
+package agent
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[Idle-0]
+	_ = x[ReceivingManifest-1]
+	_ = x[ReceivingAlgorithm-2]
+	_ = x[ReceivingData-3]
+	_ = x[Running-4]
+	_ = x[ConsumingResults-5]
+	_ = x[Complete-6]
+	_ = x[Failed-7]
+}
+
+const _AgentState_name = "IdleReceivingManifestReceivingAlgorithmReceivingDataRunningConsumingResultsCompleteFailed"
+
+var _AgentState_index = [...]uint8{0, 4, 21, 39, 52, 59, 75, 83, 89}
+
+func (i AgentState) String() string {
+	if i < 0 || i >= AgentState(len(_AgentState_index)-1) {
+		return "AgentState(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _AgentState_name[_AgentState_index[i]:_AgentState_index[i+1]]
+}

agent/algorithm/algorithm.go

@@ -46,4 +46,7 @@ func AlgorithmArgsFromContext(ctx context.Context) []string {
 type Algorithm interface {
 	// Run executes the algorithm and returns the result.
 	Run() error
+
+	// Stop stops the algorithm.
+	Stop() error
 }

agent/algorithm/binary/binary.go

@@ -9,6 +9,7 @@ import (
 	"os/exec"
 
 	"github.com/ultravioletrs/cocos/agent/algorithm"
+	"github.com/ultravioletrs/cocos/agent/algorithm/logging"
 	"github.com/ultravioletrs/cocos/agent/events"
 )
 
@@ -19,29 +20,46 @@ type binary struct {
 	stderr   io.Writer
 	stdout   io.Writer
 	args     []string
+	cmd      *exec.Cmd
 }
 
-func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, algoFile string, args []string) algorithm.Algorithm {
+func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, algoFile string, args []string, cmpID string) algorithm.Algorithm {
 	return &binary{
 		algoFile: algoFile,
-		stderr:   &algorithm.Stderr{Logger: logger, EventSvc: eventsSvc},
-		stdout:   &algorithm.Stdout{Logger: logger},
+		stderr:   &logging.Stderr{Logger: logger, EventSvc: eventsSvc, CmpID: cmpID},
+		stdout:   &logging.Stdout{Logger: logger},
 		args:     args,
 	}
 }
 
 func (b *binary) Run() error {
-	cmd := exec.Command(b.algoFile, b.args...)
-	cmd.Stderr = b.stderr
-	cmd.Stdout = b.stdout
+	b.cmd = exec.Command(b.algoFile, b.args...)
+	b.cmd.Stderr = b.stderr
+	b.cmd.Stdout = b.stdout
 
-	if err := cmd.Start(); err != nil {
+	if err := b.cmd.Start(); err != nil {
 		return fmt.Errorf("error starting algorithm: %v", err)
 	}
 
-	if err := cmd.Wait(); err != nil {
+	if err := b.cmd.Wait(); err != nil {
 		return fmt.Errorf("algorithm execution error: %v", err)
 	}
 
 	return nil
 }
+
+func (b *binary) Stop() error {
+	if b.cmd == nil {
+		return nil
+	}
+
+	if b.cmd.ProcessState != nil && b.cmd.ProcessState.Exited() {
+		return nil
+	}
+
+	if err := b.cmd.Process.Kill(); err != nil {
+		return fmt.Errorf("error stopping algorithm: %v", err)
+	}
+
+	return nil
+}

agent/algorithm/binary/binary_test.go

@@ -0,0 +1,100 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package binary
+
+import (
+	"bytes"
+	"log/slog"
+	"os"
+	"testing"
+
+	"github.com/ultravioletrs/cocos/agent/algorithm/logging"
+	"github.com/ultravioletrs/cocos/agent/events/mocks"
+)
+
+func TestNewAlgorithm(t *testing.T) {
+	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
+	eventsSvc := new(mocks.Service)
+	algoFile := "/path/to/algo"
+	args := []string{"arg1", "arg2"}
+
+	algo := NewAlgorithm(logger, eventsSvc, algoFile, args, "")
+
+	b, ok := algo.(*binary)
+	if !ok {
+		t.Fatalf("NewAlgorithm did not return a *binary")
+	}
+
+	if b.algoFile != algoFile {
+		t.Errorf("Expected algoFile to be %s, got %s", algoFile, b.algoFile)
+	}
+
+	if len(b.args) != len(args) {
+		t.Errorf("Expected %d args, got %d", len(args), len(b.args))
+	}
+
+	for i, arg := range args {
+		if b.args[i] != arg {
+			t.Errorf("Expected arg %d to be %s, got %s", i, arg, b.args[i])
+		}
+	}
+
+	if _, ok := b.stderr.(*logging.Stderr); !ok {
+		t.Errorf("Expected stderr to be *algorithm.Stderr")
+	}
+
+	if _, ok := b.stdout.(*logging.Stdout); !ok {
+		t.Errorf("Expected stdout to be *algorithm.Stdout")
+	}
+}
+
+func TestBinaryRun(t *testing.T) {
+	tests := []struct {
+		name          string
+		algoFile      string
+		args          []string
+		expectedError bool
+	}{
+		{
+			name:          "Successful execution",
+			algoFile:      "echo",
+			args:          []string{"Hello, World!"},
+			expectedError: false,
+		},
+		{
+			name:          "Non-existent binary",
+			algoFile:      "non_existent_binary",
+			args:          []string{},
+			expectedError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
+			eventsSvc := new(mocks.Service)
+
+			b := NewAlgorithm(logger, eventsSvc, tt.algoFile, tt.args, "").(*binary)
+
+			var stdout, stderr bytes.Buffer
+			b.stdout = &stdout
+			b.stderr = &stderr
+
+			err := b.Run()
+
+			if tt.expectedError && err == nil {
+				t.Errorf("Expected an error, but got none")
+			}
+
+			if !tt.expectedError && err != nil {
+				t.Errorf("Unexpected error: %v", err)
+			}
+
+			if !tt.expectedError {
+				if stdout.Len() == 0 {
+					t.Errorf("Expected non-empty stdout")
+				}
+			}
+		})
+	}
+}

agent/algorithm/docker/docker.go

@@ -3,6 +3,7 @@
 package docker
 
 import (
+	"bufio"
 	"context"
 	"fmt"
 	"io"
@@ -15,6 +16,7 @@ import (
 	"github.com/docker/docker/api/types/mount"
 	"github.com/docker/docker/client"
 	"github.com/ultravioletrs/cocos/agent/algorithm"
+	"github.com/ultravioletrs/cocos/agent/algorithm/logging"
 	"github.com/ultravioletrs/cocos/agent/events"
 )
 
@@ -33,20 +35,18 @@ type docker struct {
 	stdout   io.Writer
 }
 
-func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, algoFile string) algorithm.Algorithm {
+func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, algoFile, cmpID string) algorithm.Algorithm {
 	d := &docker{
 		algoFile: algoFile,
 		logger:   logger,
-		stderr:   &algorithm.Stderr{Logger: logger, EventSvc: eventsSvc},
-		stdout:   &algorithm.Stdout{Logger: logger},
+		stderr:   &logging.Stderr{Logger: logger, EventSvc: eventsSvc, CmpID: cmpID},
+		stdout:   &logging.Stdout{Logger: logger},
 	}
 
 	return d
 }
 
 func (d *docker) Run() error {
-	ctx := context.Background()
-
 	// Create a new Docker client.
 	cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
 	if err != nil {
@@ -60,8 +60,9 @@ func (d *docker) Run() error {
 	}
 	defer imageFile.Close()
 
+	ctx := context.Background()
 	// Load the Docker image from the tar file.
-	resp, err := cli.ImageLoad(ctx, imageFile, true)
+	resp, err := cli.ImageLoad(ctx, imageFile, client.ImageLoadWithQuiet(true))
 	if err != nil {
 		return fmt.Errorf("could not load Docker image from file: %v", err)
 	}
@@ -89,7 +90,10 @@ func (d *docker) Run() error {
 
 	// Create and start the container.
 	respContainer, err := cli.ContainerCreate(ctx, &container.Config{
-		Image: dockerImageName,
+		Image:        dockerImageName,
+		Tty:          true,
+		AttachStdout: true,
+		AttachStderr: true,
 	}, &container.HostConfig{
 		Mounts: []mount.Mount{
 			{
@@ -112,6 +116,30 @@ func (d *docker) Run() error {
 		return fmt.Errorf("could not start a Docker container: %v", err)
 	}
 
+	stdout, err := cli.ContainerLogs(ctx, respContainer.ID, container.LogsOptions{ShowStdout: true, Follow: true})
+	if err != nil {
+		return fmt.Errorf("could not read stdout from the container: %v", err)
+	}
+	defer stdout.Close()
+
+	go func() {
+		if err := writeToOut(stdout, d.stdout); err != nil {
+			d.logger.Warn(fmt.Sprintf("could not write to stdout: %v", err))
+		}
+	}()
+
+	stderr, err := cli.ContainerLogs(ctx, respContainer.ID, container.LogsOptions{ShowStderr: true, Follow: true})
+	if err != nil {
+		d.logger.Warn(fmt.Sprintf("could not read stderr from the container: %v", err))
+	}
+	defer stderr.Close()
+
+	go func() {
+		if err := writeToOut(stderr, d.stderr); err != nil {
+			d.logger.Warn(fmt.Sprintf("could not write to stderr: %v", err))
+		}
+	}()
+
 	statusCh, errCh := cli.ContainerWait(ctx, respContainer.ID, container.WaitConditionNotRunning)
 	select {
 	case err := <-errCh:
@@ -121,28 +149,6 @@ func (d *docker) Run() error {
 	case <-statusCh:
 	}
 
-	stdout, err := cli.ContainerLogs(ctx, respContainer.ID, container.LogsOptions{ShowStdout: true})
-	if err != nil {
-		return fmt.Errorf("could not read stdout from the container: %v", err)
-	}
-	defer stdout.Close()
-
-	err = writeToOut(stdout, d.stdout)
-	if err != nil {
-		d.logger.Warn(fmt.Sprintf("could not write to stdout: %v", err))
-	}
-
-	stderr, err := cli.ContainerLogs(ctx, respContainer.ID, container.LogsOptions{ShowStderr: true})
-	if err != nil {
-		d.logger.Warn(fmt.Sprintf("could not read stderr from the container: %v", err))
-	}
-	defer stderr.Close()
-
-	err = writeToOut(stderr, d.stderr)
-	if err != nil {
-		d.logger.Warn(fmt.Sprintf("could not write to stderr: %v", err))
-	}
-
 	defer func() {
 		if err = cli.ContainerRemove(ctx, respContainer.ID, container.RemoveOptions{Force: true}); err != nil {
 			d.logger.Warn(fmt.Sprintf("error could not remove container: %v", err))
@@ -157,14 +163,20 @@ func (d *docker) Run() error {
 }
 
 func writeToOut(readCloser io.ReadCloser, ioWriter io.Writer) error {
-	content, err := io.ReadAll(readCloser)
-	if err != nil {
-		return fmt.Errorf("could not convert content from the container: %v", err)
+	scanner := bufio.NewScanner(readCloser)
+	for scanner.Scan() {
+		if _, err := ioWriter.Write(scanner.Bytes()); err != nil {
+			return fmt.Errorf("error writing to output: %v", err)
+		}
 	}
-
-	if _, err := ioWriter.Write(content); err != nil {
-		return fmt.Errorf("could not write to output: %v", err)
+	if err := scanner.Err(); err != nil {
+		return fmt.Errorf("error reading container logs error: %v", err)
 	}
 
 	return nil
 }
+
+func (d *docker) Stop() error {
+	// To be supported later.
+	return nil
+}

agent/algorithm/docker/docker_test.go

@@ -0,0 +1,29 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package docker
+
+import (
+	"log/slog"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/ultravioletrs/cocos/agent/algorithm/logging"
+	"github.com/ultravioletrs/cocos/agent/events/mocks"
+)
+
+// TestNewAlgorithm tests the NewAlgorithm function.
+func TestNewAlgorithm(t *testing.T) {
+	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
+	eventsSvc := new(mocks.Service)
+	algoFile := "/path/to/algo.tar"
+
+	algo := NewAlgorithm(logger, eventsSvc, algoFile, "")
+
+	d, ok := algo.(*docker)
+	assert.True(t, ok, "NewAlgorithm should return a *docker")
+	assert.Equal(t, algoFile, d.algoFile, "algoFile should be set correctly")
+	assert.NotNil(t, d.logger, "logger should be set")
+	assert.IsType(t, &logging.Stderr{}, d.stderr, "stderr should be of type *algorithm.Stderr")
+	assert.IsType(t, &logging.Stdout{}, d.stdout, "stdout should be of type *algorithm.Stdout")
+}

agent/algorithm/logging/logging.go

@@ -1,9 +1,10 @@
 // Copyright (c) Ultraviolet
 // SPDX-License-Identifier: Apache-2.0
-package algorithm
+package logging
 
 import (
 	"bytes"
+	"encoding/json"
 	"io"
 	"log/slog"
 
@@ -15,7 +16,11 @@ var (
 	_ io.Writer = &Stderr{}
 )
 
-const bufSize = 1024
+const (
+	bufSize       = 1024
+	algorithmRun  = "AlgorithmRun"
+	warningStatus = "Warning"
+)
 
 type Stdout struct {
 	Logger *slog.Logger
@@ -45,6 +50,7 @@ func (s *Stdout) Write(p []byte) (n int, err error) {
 type Stderr struct {
 	Logger   *slog.Logger
 	EventSvc events.Service
+	CmpID    string
 }
 
 // Write implements io.Writer.
@@ -65,9 +71,7 @@ func (s *Stderr) Write(p []byte) (n int, err error) {
 		s.Logger.Error(string(buf[:n]))
 	}
 
-	if err := s.EventSvc.SendEvent("algorithm-run", "error", nil); err != nil {
-		return len(p), err
-	}
+	s.EventSvc.SendEvent(s.CmpID, algorithmRun, warningStatus, json.RawMessage{})
 
 	return len(p), nil
 }

agent/algorithm/logging/logging_test.go

@@ -1,6 +1,6 @@
 // Copyright (c) Ultraviolet
 // SPDX-License-Identifier: Apache-2.0
-package algorithm
+package logging
 
 import (
 	"strings"
@@ -10,6 +10,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
 	"github.com/ultravioletrs/cocos/agent/events/mocks"
+	"github.com/ultravioletrs/cocos/pkg/manager"
 )
 
 func TestStdoutWrite(t *testing.T) {
@@ -72,7 +73,7 @@ func TestStderrWrite(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			mockEventService := mocks.NewService(t)
-			mockEventService.On("SendEvent", "algorithm-run", "error", mock.Anything).Return(nil)
+			mockEventService.On("SendEvent", mock.Anything, "AlgorithmRun", manager.Warning.String(), mock.Anything).Return(nil)
 
 			stderr := &Stderr{Logger: mglog.NewMock(), EventSvc: mockEventService}
 			n, err := stderr.Write([]byte(tt.input))

agent/algorithm/python/python.go

@@ -12,21 +12,22 @@ import (
 	"path/filepath"
 
 	"github.com/ultravioletrs/cocos/agent/algorithm"
+	"github.com/ultravioletrs/cocos/agent/algorithm/logging"
 	"github.com/ultravioletrs/cocos/agent/events"
 	"google.golang.org/grpc/metadata"
 )
 
 const (
 	PyRuntime    = "python3"
-	pyRuntimeKey = "python_runtime"
+	PyRuntimeKey = "python_runtime"
 )
 
 func PythonRunTimeToContext(ctx context.Context, runtime string) context.Context {
-	return metadata.AppendToOutgoingContext(ctx, pyRuntimeKey, runtime)
+	return metadata.AppendToOutgoingContext(ctx, PyRuntimeKey, runtime)
 }
 
 func PythonRunTimeFromContext(ctx context.Context) string {
-	return metadata.ValueFromIncomingContext(ctx, pyRuntimeKey)[0]
+	return metadata.ValueFromIncomingContext(ctx, PyRuntimeKey)[0]
 }
 
 var _ algorithm.Algorithm = (*python)(nil)
@@ -38,13 +39,14 @@ type python struct {
 	runtime          string
 	requirementsFile string
 	args             []string
+	cmd              *exec.Cmd
 }
 
-func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, runtime, requirementsFile, algoFile string, args []string) algorithm.Algorithm {
+func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, runtime, requirementsFile, algoFile string, args []string, cmpID string) algorithm.Algorithm {
 	p := &python{
 		algoFile:         algoFile,
-		stderr:           &algorithm.Stderr{Logger: logger, EventSvc: eventsSvc},
-		stdout:           &algorithm.Stdout{Logger: logger},
+		stderr:           &logging.Stderr{Logger: logger, EventSvc: eventsSvc, CmpID: cmpID},
+		stdout:           &logging.Stdout{Logger: logger},
 		requirementsFile: requirementsFile,
 		args:             args,
 	}
@@ -67,6 +69,13 @@ func (p *python) Run() error {
 
 	pythonPath := filepath.Join(venvPath, "bin", "python")
 
+	updatePipCmd := exec.Command(pythonPath, "-m", "pip", "install", "--upgrade", "pip")
+	updatePipCmd.Stderr = p.stderr
+	updatePipCmd.Stdout = p.stdout
+	if err := updatePipCmd.Run(); err != nil {
+		return fmt.Errorf("error updating pip: %v", err)
+	}
+
 	if p.requirementsFile != "" {
 		rcmd := exec.Command(pythonPath, "-m", "pip", "install", "-r", p.requirementsFile)
 		rcmd.Stderr = p.stderr
@@ -77,15 +86,15 @@ func (p *python) Run() error {
 	}
 
 	args := append([]string{p.algoFile}, p.args...)
-	cmd := exec.Command(pythonPath, args...)
-	cmd.Stderr = p.stderr
-	cmd.Stdout = p.stdout
+	p.cmd = exec.Command(pythonPath, args...)
+	p.cmd.Stderr = p.stderr
+	p.cmd.Stdout = p.stdout
 
-	if err := cmd.Start(); err != nil {
+	if err := p.cmd.Start(); err != nil {
 		return fmt.Errorf("error starting algorithm: %v", err)
 	}
 
-	if err := cmd.Wait(); err != nil {
+	if err := p.cmd.Wait(); err != nil {
 		return fmt.Errorf("algorithm execution error: %v", err)
 	}
 
@@ -95,3 +104,19 @@ func (p *python) Run() error {
 
 	return nil
 }
+
+func (p *python) Stop() error {
+	if p.cmd == nil {
+		return nil
+	}
+
+	if p.cmd.ProcessState != nil && p.cmd.ProcessState.Exited() {
+		return nil
+	}
+
+	if err := p.cmd.Process.Kill(); err != nil {
+		return fmt.Errorf("error stopping algorithm: %v", err)
+	}
+
+	return nil
+}

agent/algorithm/python/python_test.go

@@ -0,0 +1,148 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package python
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"log/slog"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/ultravioletrs/cocos/agent/algorithm/logging"
+	"github.com/ultravioletrs/cocos/agent/events/mocks"
+	"google.golang.org/grpc/metadata"
+)
+
+const runtime = "python3"
+
+func TestPythonRunTimeToContext(t *testing.T) {
+	ctx := context.Background()
+	newCtx := PythonRunTimeToContext(ctx, runtime)
+
+	md, ok := metadata.FromOutgoingContext(newCtx)
+	if !ok {
+		t.Fatal("Expected metadata in context")
+	}
+
+	values := md.Get(PyRuntimeKey)
+	if len(values) != 1 || values[0] != runtime {
+		t.Errorf("Expected runtime %s, got %v", runtime, values)
+	}
+}
+
+func TestPythonRunTimeFromContext(t *testing.T) {
+	ctx := metadata.NewIncomingContext(context.Background(), metadata.Pairs(PyRuntimeKey, runtime))
+
+	got := PythonRunTimeFromContext(ctx)
+	if got != runtime {
+		t.Errorf("Expected runtime %s, got %s", runtime, got)
+	}
+}
+
+func TestNewAlgorithm(t *testing.T) {
+	logger := &slog.Logger{}
+	eventsSvc := new(mocks.Service)
+	requirementsFile := "requirements.txt"
+	algoFile := "algorithm.py"
+	args := []string{"--arg1", "value1"}
+
+	algo := NewAlgorithm(logger, eventsSvc, runtime, requirementsFile, algoFile, args, "")
+
+	p, ok := algo.(*python)
+	if !ok {
+		t.Fatal("Expected *python type")
+	}
+
+	if p.runtime != runtime {
+		t.Errorf("Expected runtime %s, got %s", runtime, p.runtime)
+	}
+	if p.requirementsFile != requirementsFile {
+		t.Errorf("Expected requirementsFile %s, got %s", requirementsFile, p.requirementsFile)
+	}
+	if p.algoFile != algoFile {
+		t.Errorf("Expected algoFile %s, got %s", algoFile, p.algoFile)
+	}
+	if len(p.args) != len(args) {
+		t.Errorf("Expected %d args, got %d", len(args), len(p.args))
+	}
+}
+
+func TestRun(t *testing.T) {
+	tmpDir, err := os.MkdirTemp("", "python-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	scriptContent := []byte("print('Hello, World!')")
+	scriptPath := filepath.Join(tmpDir, "test_script.py")
+	if err := os.WriteFile(scriptPath, scriptContent, 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	eventsSvc := new(mocks.Service)
+
+	var stdout, stderr bytes.Buffer
+
+	algo := &python{
+		algoFile: scriptPath,
+		stderr:   io.MultiWriter(&stderr, &logging.Stderr{Logger: slog.Default(), EventSvc: eventsSvc}),
+		stdout:   io.MultiWriter(&stdout, &logging.Stdout{Logger: slog.Default()}),
+		runtime:  "python3",
+	}
+
+	err = algo.Run()
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	expectedOutput := "Hello, World!\n"
+	if !strings.Contains(stdout.String(), expectedOutput) {
+		t.Errorf("Expected output to contain %q, got %q", expectedOutput, stdout.String())
+	}
+}
+
+func TestRunWithRequirements(t *testing.T) {
+	tmpDir, err := os.MkdirTemp("", "python-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	scriptContent := []byte("import requests\nprint(requests.__version__)")
+	scriptPath := filepath.Join(tmpDir, "test_script.py")
+	if err := os.WriteFile(scriptPath, scriptContent, 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	requirementsContent := []byte("requests==2.26.0")
+	requirementsPath := filepath.Join(tmpDir, "requirements.txt")
+	if err := os.WriteFile(requirementsPath, requirementsContent, 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	eventsSvc := new(mocks.Service)
+
+	var stdout, stderr bytes.Buffer
+
+	algo := &python{
+		algoFile:         scriptPath,
+		requirementsFile: requirementsPath,
+		stderr:           io.MultiWriter(&stderr, &logging.Stderr{Logger: slog.Default(), EventSvc: eventsSvc}),
+		stdout:           io.MultiWriter(&stdout, &logging.Stdout{Logger: slog.Default()}),
+		runtime:          "python3",
+	}
+
+	err = algo.Run()
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	if !strings.Contains(stdout.String(), "2.26.0") {
+		t.Errorf("Expected output to contain requests version 2.26.0, got %q", stdout.String())
+	}
+}

agent/algorithm/wasm/wasm.go

@@ -9,6 +9,7 @@ import (
 	"os/exec"
 
 	"github.com/ultravioletrs/cocos/agent/algorithm"
+	"github.com/ultravioletrs/cocos/agent/algorithm/logging"
 	"github.com/ultravioletrs/cocos/agent/events"
 )
 
@@ -23,13 +24,14 @@ type wasm struct {
 	stderr   io.Writer
 	stdout   io.Writer
 	args     []string
+	cmd      *exec.Cmd
 }
 
-func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, algoFile string, args []string) algorithm.Algorithm {
+func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, args []string, algoFile, cmpID string) algorithm.Algorithm {
 	return &wasm{
 		algoFile: algoFile,
-		stderr:   &algorithm.Stderr{Logger: logger, EventSvc: eventsSvc},
-		stdout:   &algorithm.Stdout{Logger: logger},
+		stderr:   &logging.Stderr{Logger: logger, EventSvc: eventsSvc, CmpID: cmpID},
+		stdout:   &logging.Stdout{Logger: logger},
 		args:     args,
 	}
 }
@@ -37,17 +39,33 @@ func NewAlgorithm(logger *slog.Logger, eventsSvc events.Service, algoFile string
 func (w *wasm) Run() error {
 	args := append(mapDirOption, w.algoFile)
 	args = append(args, w.args...)
-	cmd := exec.Command(wasmRuntime, args...)
-	cmd.Stderr = w.stderr
-	cmd.Stdout = w.stdout
+	w.cmd = exec.Command(wasmRuntime, args...)
+	w.cmd.Stderr = w.stderr
+	w.cmd.Stdout = w.stdout
 
-	if err := cmd.Start(); err != nil {
+	if err := w.cmd.Start(); err != nil {
 		return fmt.Errorf("error starting algorithm: %v", err)
 	}
 
-	if err := cmd.Wait(); err != nil {
+	if err := w.cmd.Wait(); err != nil {
 		return fmt.Errorf("algorithm execution error: %v", err)
 	}
 
 	return nil
 }
+
+func (w *wasm) Stop() error {
+	if w.cmd == nil {
+		return nil
+	}
+
+	if w.cmd.ProcessState != nil && w.cmd.ProcessState.Exited() {
+		return nil
+	}
+
+	if err := w.cmd.Process.Kill(); err != nil {
+		return fmt.Errorf("error stopping algorithm: %v", err)
+	}
+
+	return nil
+}

agent/algorithm/wasm/wasm_test.go

@@ -0,0 +1,89 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package wasm
+
+import (
+	"log/slog"
+	"os"
+	"os/exec"
+	"testing"
+
+	"github.com/ultravioletrs/cocos/agent/algorithm/logging"
+	"github.com/ultravioletrs/cocos/agent/events/mocks"
+)
+
+func TestNewAlgorithm(t *testing.T) {
+	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
+	eventsSvc := new(mocks.Service)
+	algoFile := "test.wasm"
+	args := []string{"arg1", "arg2"}
+
+	algo := NewAlgorithm(logger, eventsSvc, args, algoFile, "")
+
+	w, ok := algo.(*wasm)
+	if !ok {
+		t.Fatalf("NewAlgorithm did not return a *wasm")
+	}
+
+	if w.algoFile != algoFile {
+		t.Errorf("Expected algoFile to be %s, got %s", algoFile, w.algoFile)
+	}
+
+	if len(w.args) != len(args) {
+		t.Errorf("Expected %d args, got %d", len(args), len(w.args))
+	}
+
+	_, ok = w.stderr.(*logging.Stderr)
+	if !ok {
+		t.Errorf("Expected stderr to be *algorithm.Stderr")
+	}
+
+	_, ok = w.stdout.(*logging.Stdout)
+	if !ok {
+		t.Errorf("Expected stdout to be *algorithm.Stdout")
+	}
+}
+
+func TestRunError(t *testing.T) {
+	// Mock exec.Command to return an error
+	execCommand = mockExecCommandError
+	defer func() { execCommand = exec.Command }()
+
+	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
+	eventsSvc := new(mocks.Service)
+	algoFile := "test.wasm"
+	args := []string{"arg1", "arg2"}
+
+	w := NewAlgorithm(logger, eventsSvc, args, algoFile, "").(*wasm)
+
+	err := w.Run()
+	if err == nil {
+		t.Errorf("Run() should have returned an error")
+	}
+}
+
+func mockExecCommand(command string, args ...string) *exec.Cmd {
+	cs := []string{"-test.run=TestHelperProcess", "--", command}
+	cs = append(cs, args...)
+	cmd := exec.Command(os.Args[0], cs...)
+	cmd.Env = []string{"GO_WANT_HELPER_PROCESS=1"}
+	return cmd
+}
+
+func mockExecCommandError(command string, args ...string) *exec.Cmd {
+	cmd := mockExecCommand(command, args...)
+	cmd.Env = append(cmd.Env, "GO_WANT_HELPER_PROCESS_ERROR=1")
+	return cmd
+}
+
+func TestHelperProcess(t *testing.T) {
+	if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
+		return
+	}
+	if os.Getenv("GO_WANT_HELPER_PROCESS_ERROR") == "1" {
+		os.Exit(1)
+	}
+	os.Exit(0)
+}
+
+var execCommand = exec.Command

agent/api/grpc/endpoint.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/go-kit/kit/endpoint"
 	"github.com/ultravioletrs/cocos/agent"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
 )
 
 func algoEndpoint(svc agent.Service) endpoint.Endpoint {
@@ -70,7 +71,7 @@ func attestationEndpoint(svc agent.Service) endpoint.Endpoint {
 		if err := req.validate(); err != nil {
 			return attestationRes{}, err
 		}
-		file, err := svc.Attestation(ctx, req.ReportData)
+		file, err := svc.Attestation(ctx, req.TeeNonce, req.VtpmNonce, config.AttestationType(req.AttType))
 		if err != nil {
 			return attestationRes{}, err
 		}

agent/api/grpc/endpoint_test.go

@@ -0,0 +1,174 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package grpc
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	"github.com/ultravioletrs/cocos/agent"
+	"github.com/ultravioletrs/cocos/agent/mocks"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+	"golang.org/x/crypto/sha3"
+)
+
+const svcErr = "Service Error"
+
+func TestAlgoEndpoint(t *testing.T) {
+	svc := new(mocks.Service)
+	tests := []struct {
+		name        string
+		req         algoReq
+		expectedErr bool
+	}{
+		{
+			name: "Success",
+			req:  algoReq{Algorithm: []byte("algorithm")},
+		},
+		{
+			name:        "Validation Error",
+			req:         algoReq{},
+			expectedErr: true,
+		},
+		{
+			name:        "Service Error",
+			req:         algoReq{Algorithm: []byte("algorithm")},
+			expectedErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.name == svcErr {
+				svc.On("Algo", context.Background(), agent.Algorithm{Algorithm: tt.req.Algorithm}).Return(errors.New("")).Once()
+			} else {
+				svc.On("Algo", context.Background(), agent.Algorithm{Algorithm: tt.req.Algorithm}).Return(nil).Once()
+			}
+			endpoint := algoEndpoint(svc)
+			_, err := endpoint(context.Background(), tt.req)
+			if (err != nil) != tt.expectedErr {
+				t.Errorf("algoEndpoint() error = %v, expectedErr %v", err, tt.expectedErr)
+			}
+		})
+	}
+}
+
+func TestDataEndpoint(t *testing.T) {
+	svc := new(mocks.Service)
+	tests := []struct {
+		name        string
+		req         dataReq
+		expectedErr bool
+	}{
+		{
+			name: "Success",
+			req:  dataReq{Dataset: []byte("dataset")},
+		},
+		{
+			name:        "Validation Error",
+			req:         dataReq{},
+			expectedErr: true,
+		},
+		{
+			name:        "Service Error",
+			req:         dataReq{Dataset: []byte("dataset")},
+			expectedErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.name == svcErr {
+				svc.On("Data", context.Background(), agent.Dataset{Dataset: tt.req.Dataset}).Return(errors.New("")).Once()
+			} else {
+				svc.On("Data", context.Background(), agent.Dataset{Dataset: tt.req.Dataset}).Return(nil).Once()
+			}
+			endpoint := dataEndpoint(svc)
+			_, err := endpoint(context.Background(), tt.req)
+			if (err != nil) != tt.expectedErr {
+				t.Errorf("dataEndpoint() error = %v, expectedErr %v", err, tt.expectedErr)
+			}
+		})
+	}
+}
+
+func TestResultEndpoint(t *testing.T) {
+	svc := new(mocks.Service)
+	tests := []struct {
+		name        string
+		req         resultReq
+		expectedErr bool
+	}{
+		{
+			name: "Success",
+			req:  resultReq{},
+		},
+		{
+			name:        "Service Error",
+			req:         resultReq{},
+			expectedErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.name == svcErr {
+				svc.On("Result", context.Background()).Return([]byte{}, errors.New("")).Once()
+			} else {
+				svc.On("Result", context.Background()).Return([]byte{}, nil).Once()
+			}
+			endpoint := resultEndpoint(svc)
+			res, err := endpoint(context.Background(), tt.req)
+			if (err != nil) != tt.expectedErr {
+				t.Errorf("resultEndpoint() error = %v, expectedErr %v", err, tt.expectedErr)
+			}
+			if err == nil {
+				_, ok := res.(resultRes)
+				if !ok {
+					t.Errorf("resultEndpoint() returned unexpected type %T", res)
+				}
+			}
+		})
+	}
+}
+
+func TestAttestationEndpoint(t *testing.T) {
+	svc := new(mocks.Service)
+	tests := []struct {
+		name        string
+		req         attestationReq
+		expectedErr bool
+	}{
+		{
+			name: "Success",
+			req:  attestationReq{TeeNonce: sha3.Sum512([]byte("report data")), VtpmNonce: sha3.Sum256([]byte("vtpm nonce")), AttType: config.SNP},
+		},
+		{
+			name:        "Service Error",
+			req:         attestationReq{TeeNonce: sha3.Sum512([]byte("report data")), VtpmNonce: sha3.Sum256([]byte("vtpm nonce")), AttType: config.SNP},
+			expectedErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.name == svcErr {
+				svc.On("Attestation", context.Background(), tt.req.TeeNonce, tt.req.VtpmNonce, tt.req.AttType).Return([]byte{}, errors.New("")).Once()
+			} else {
+				svc.On("Attestation", context.Background(), tt.req.TeeNonce, tt.req.VtpmNonce, tt.req.AttType).Return([]byte{}, nil).Once()
+			}
+			endpoint := attestationEndpoint(svc)
+			res, err := endpoint(context.Background(), tt.req)
+			if (err != nil) != tt.expectedErr {
+				t.Errorf("attestationEndpoint() error = %v, expectedErr %v", err, tt.expectedErr)
+			}
+			if err == nil {
+				_, ok := res.(attestationRes)
+				if !ok {
+					t.Errorf("attestationEndpoint() returned unexpected type %T", res)
+				}
+			}
+		})
+	}
+}

agent/api/grpc/interceptors.go

@@ -35,20 +35,20 @@ func (s *authInterceptor) AuthStreamInterceptor() grpc.StreamServerInterceptor {
 		switch info.FullMethod {
 		case agent.AgentService_Algo_FullMethodName:
 			if _, err := s.auth.AuthenticateUser(stream.Context(), auth.AlgorithmProviderRole); err != nil {
-				return status.Errorf(codes.Unauthenticated, err.Error())
+				return status.Errorf(codes.Unauthenticated, "%v", err.Error())
 			}
 			return handler(srv, stream)
 		case agent.AgentService_Data_FullMethodName:
 			ctx, err := s.auth.AuthenticateUser(stream.Context(), auth.DataProviderRole)
 			if err != nil {
-				return status.Errorf(codes.Unauthenticated, err.Error())
+				return status.Errorf(codes.Unauthenticated, "%s", err.Error())
 			}
 			wrapped := &wrappedServerStream{ServerStream: stream, ctx: ctx}
 			return handler(srv, wrapped)
 		case agent.AgentService_Result_FullMethodName:
 			ctx, err := s.auth.AuthenticateUser(stream.Context(), auth.ConsumerRole)
 			if err != nil {
-				return status.Errorf(codes.Unauthenticated, err.Error())
+				return status.Errorf(codes.Unauthenticated, "%v", err.Error())
 			}
 			wrapped := &wrappedServerStream{ServerStream: stream, ctx: ctx}
 			return handler(srv, wrapped)
@@ -64,7 +64,7 @@ func (s *authInterceptor) AuthUnaryInterceptor() grpc.UnaryServerInterceptor {
 		case agent.AgentService_Result_FullMethodName:
 			ctx, err := s.auth.AuthenticateUser(ctx, auth.ConsumerRole)
 			if err != nil {
-				return nil, status.Errorf(codes.Unauthenticated, err.Error())
+				return nil, status.Errorf(codes.Unauthenticated, "%v", err.Error())
 			}
 			return handler(ctx, req)
 		default:

agent/api/grpc/interceptors_test.go

@@ -9,7 +9,7 @@ import (
 	"github.com/stretchr/testify/mock"
 	"github.com/ultravioletrs/cocos/agent"
 	"github.com/ultravioletrs/cocos/agent/auth"
-	"github.com/ultravioletrs/cocos/agent/mocks"
+	"github.com/ultravioletrs/cocos/agent/auth/mocks"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/metadata"
 )

agent/api/grpc/requests.go

@@ -4,6 +4,10 @@ package grpc
 
 import (
 	"errors"
+
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
 )
 
 type algoReq struct {
@@ -38,9 +42,16 @@ func (req resultReq) validate() error {
 }
 
 type attestationReq struct {
-	ReportData [64]byte
+	TeeNonce  [quoteprovider.Nonce]byte
+	VtpmNonce [vtpm.Nonce]byte
+	AttType   config.AttestationType
 }
 
 func (req attestationReq) validate() error {
-	return nil
+	switch req.AttType {
+	case config.SNP, config.VTPM, config.SNPvTPM:
+		return nil
+	default:
+		return errors.New("invalid attestation type in attestation request")
+	}
 }

agent/api/grpc/server.go

@@ -6,15 +6,28 @@ import (
 	"bytes"
 	"context"
 	"errors"
+	"fmt"
 	"io"
 
 	"github.com/go-kit/kit/transport/grpc"
 	"github.com/ultravioletrs/cocos/agent"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
 	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/status"
 )
 
-const bufferSize = 1024 * 1024
+const (
+	bufferSize  = 1024 * 1024
+	FileSizeKey = "file-size"
+)
+
+var (
+	ErrTEENonceLength  = errors.New("malformed report data, expect less or equal to 64 bytes")
+	ErrVTpmNonceLength = errors.New("malformed vTPM nonce, expect less or equal to 32 bytes")
+)
 
 var _ agent.AgentServiceServer = (*grpcServer)(nil)
 
@@ -91,10 +104,20 @@ func encodeResultResponse(_ context.Context, response interface{}) (interface{},
 
 func decodeAttestationRequest(_ context.Context, grpcReq interface{}) (interface{}, error) {
 	req := grpcReq.(*agent.AttestationRequest)
-	if len(req.ReportData) != agent.ReportDataSize {
-		return nil, errors.New("malformed report data, expect 64 bytes")
+	var reportData [quoteprovider.Nonce]byte
+	var nonce [vtpm.Nonce]byte
+
+	if len(req.TeeNonce) > quoteprovider.Nonce {
+		return nil, ErrTEENonceLength
 	}
-	return attestationReq{ReportData: [agent.ReportDataSize]byte(req.ReportData)}, nil
+
+	if len(req.VtpmNonce) > vtpm.Nonce {
+		return nil, ErrVTpmNonceLength
+	}
+
+	copy(reportData[:], req.TeeNonce)
+	copy(nonce[:], req.VtpmNonce)
+	return attestationReq{TeeNonce: reportData, VtpmNonce: nonce, AttType: config.AttestationType(req.Type)}, nil
 }
 
 func encodeAttestationResponse(_ context.Context, response interface{}) (interface{}, error) {
@@ -156,12 +179,16 @@ func (s *grpcServer) Result(req *agent.ResultRequest, stream agent.AgentService_
 	}
 	rr := res.(*agent.ResultResponse)
 
-	reusltBuffer := bytes.NewBuffer(rr.File)
+	if err := stream.SetHeader(metadata.New(map[string]string{FileSizeKey: fmt.Sprint(len(rr.File))})); err != nil {
+		return status.Error(codes.Internal, err.Error())
+	}
+
+	resultBuffer := bytes.NewBuffer(rr.File)
 
 	buf := make([]byte, bufferSize)
 
 	for {
-		n, err := reusltBuffer.Read(buf)
+		n, err := resultBuffer.Read(buf)
 		if err == io.EOF {
 			break
 		}
@@ -177,11 +204,34 @@ func (s *grpcServer) Result(req *agent.ResultRequest, stream agent.AgentService_
 	return nil
 }
 
-func (s *grpcServer) Attestation(ctx context.Context, req *agent.AttestationRequest) (*agent.AttestationResponse, error) {
-	_, res, err := s.attestation.ServeGRPC(ctx, req)
+func (s *grpcServer) Attestation(req *agent.AttestationRequest, stream agent.AgentService_AttestationServer) error {
+	_, res, err := s.attestation.ServeGRPC(stream.Context(), req)
 	if err != nil {
-		return nil, err
+		return err
 	}
 	rr := res.(*agent.AttestationResponse)
-	return rr, nil
+
+	if err := stream.SetHeader(metadata.New(map[string]string{FileSizeKey: fmt.Sprint(len(rr.File))})); err != nil {
+		return status.Error(codes.Internal, err.Error())
+	}
+
+	attestationBuffer := bytes.NewBuffer(rr.File)
+
+	buf := make([]byte, bufferSize)
+
+	for {
+		n, err := attestationBuffer.Read(buf)
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return status.Error(codes.Internal, err.Error())
+		}
+
+		if err := stream.Send(&agent.AttestationResponse{File: buf[:n]}); err != nil {
+			return status.Error(codes.Internal, err.Error())
+		}
+	}
+
+	return nil
 }

agent/api/grpc/server_test.go

@@ -0,0 +1,218 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package grpc
+
+import (
+	"context"
+	"io"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/ultravioletrs/cocos/agent"
+	"github.com/ultravioletrs/cocos/agent/mocks"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/metadata"
+)
+
+type MockAgentService_AlgoServer struct {
+	grpc.ServerStream
+	mock.Mock
+	ctx context.Context
+}
+
+func (m *MockAgentService_AlgoServer) Context() context.Context {
+	return m.ctx
+}
+
+func (m *MockAgentService_AlgoServer) Recv() (*agent.AlgoRequest, error) {
+	args := m.Called()
+	return args.Get(0).(*agent.AlgoRequest), args.Error(1)
+}
+
+func (m *MockAgentService_AlgoServer) SendAndClose(resp *agent.AlgoResponse) error {
+	args := m.Called(resp)
+	return args.Error(0)
+}
+
+type MockAgentService_DataServer struct {
+	grpc.ServerStream
+	mock.Mock
+	ctx context.Context
+}
+
+func (m *MockAgentService_DataServer) Context() context.Context {
+	return m.ctx
+}
+
+func (m *MockAgentService_DataServer) Recv() (*agent.DataRequest, error) {
+	args := m.Called()
+	return args.Get(0).(*agent.DataRequest), args.Error(1)
+}
+
+func (m *MockAgentService_DataServer) SendAndClose(resp *agent.DataResponse) error {
+	args := m.Called(resp)
+	return args.Error(0)
+}
+
+type MockAgentService_ResultServer struct {
+	grpc.ServerStream
+	mock.Mock
+	ctx context.Context
+}
+
+func (m *MockAgentService_ResultServer) Context() context.Context {
+	return m.ctx
+}
+
+func (m *MockAgentService_ResultServer) SetHeader(metadata.MD) error {
+	return nil
+}
+
+func (m *MockAgentService_ResultServer) Send(resp *agent.ResultResponse) error {
+	args := m.Called(resp)
+	return args.Error(0)
+}
+
+type MockAgentService_AttestationServer struct {
+	grpc.ServerStream
+	mock.Mock
+	ctx context.Context
+}
+
+func (m *MockAgentService_AttestationServer) Context() context.Context {
+	return m.ctx
+}
+
+func (m *MockAgentService_AttestationServer) Send(resp *agent.AttestationResponse) error {
+	args := m.Called(resp)
+	return args.Error(0)
+}
+
+func (m *MockAgentService_AttestationServer) SetHeader(metadata.MD) error {
+	return nil
+}
+
+func TestAlgo(t *testing.T) {
+	mockService := new(mocks.Service)
+	server := NewServer(mockService)
+
+	mockStream := &MockAgentService_AlgoServer{ctx: context.Background()}
+	mockStream.On("Recv").Return(&agent.AlgoRequest{Algorithm: []byte("algo"), Requirements: []byte("req")}, nil).Once()
+	mockStream.On("Recv").Return(&agent.AlgoRequest{}, io.EOF)
+	mockStream.On("SendAndClose", &agent.AlgoResponse{}).Return(nil)
+
+	mockService.On("Algo", context.Background(), agent.Algorithm{Algorithm: []byte("algo"), Requirements: []byte("req")}).Return(nil)
+
+	err := server.Algo(mockStream)
+	assert.NoError(t, err)
+
+	mockStream.AssertExpectations(t)
+	mockService.AssertExpectations(t)
+}
+
+func TestData(t *testing.T) {
+	mockService := new(mocks.Service)
+	server := NewServer(mockService)
+
+	mockStream := &MockAgentService_DataServer{ctx: context.Background()}
+	mockStream.On("Recv").Return(&agent.DataRequest{Dataset: []byte("data"), Filename: "test.txt"}, nil).Once()
+	mockStream.On("Recv").Return(&agent.DataRequest{}, io.EOF)
+	mockStream.On("SendAndClose", &agent.DataResponse{}).Return(nil)
+
+	mockService.On("Data", context.Background(), agent.Dataset{Dataset: []byte("data"), Filename: "test.txt"}).Return(nil)
+
+	err := server.Data(mockStream)
+	assert.NoError(t, err)
+
+	mockStream.AssertExpectations(t)
+	mockService.AssertExpectations(t)
+}
+
+func TestResult(t *testing.T) {
+	mockService := new(mocks.Service)
+	server := NewServer(mockService)
+
+	mockStream := &MockAgentService_ResultServer{ctx: context.Background()}
+	mockService.On("Result", mock.Anything).Return([]byte("result data"), nil)
+	mockStream.On("Send", mock.AnythingOfType("*agent.ResultResponse")).Return(nil)
+
+	err := server.Result(&agent.ResultRequest{}, mockStream)
+	assert.NoError(t, err)
+
+	mockStream.AssertExpectations(t)
+	mockService.AssertExpectations(t)
+}
+
+func TestAttestation(t *testing.T) {
+	mockService := new(mocks.Service)
+	server := NewServer(mockService)
+
+	mockStream := &MockAgentService_AttestationServer{ctx: context.Background()}
+	mockStream.On("Send", mock.AnythingOfType("*agent.AttestationResponse")).Return(nil)
+
+	reportData := [quoteprovider.Nonce]byte{}
+	vtpmNonce := [vtpm.Nonce]byte{}
+	attestationType := config.SNP
+	mockService.On("Attestation", mock.Anything, reportData, vtpmNonce, attestationType).Return([]byte("attestation data"), nil)
+
+	err := server.Attestation(&agent.AttestationRequest{TeeNonce: reportData[:]}, mockStream)
+	assert.NoError(t, err)
+
+	mockService.AssertExpectations(t)
+}
+
+func TestDecodeAlgoRequest(t *testing.T) {
+	req := &agent.AlgoRequest{Algorithm: []byte("algo"), Requirements: []byte("req")}
+	decoded, err := decodeAlgoRequest(context.Background(), req)
+	assert.NoError(t, err)
+	assert.Equal(t, algoReq{Algorithm: []byte("algo"), Requirements: []byte("req")}, decoded)
+}
+
+func TestEncodeAlgoResponse(t *testing.T) {
+	encoded, err := encodeAlgoResponse(context.Background(), algoRes{})
+	assert.NoError(t, err)
+	assert.Equal(t, &agent.AlgoResponse{}, encoded)
+}
+
+func TestDecodeDataRequest(t *testing.T) {
+	req := &agent.DataRequest{Dataset: []byte("data"), Filename: "test.txt"}
+	decoded, err := decodeDataRequest(context.Background(), req)
+	assert.NoError(t, err)
+	assert.Equal(t, dataReq{Dataset: []byte("data"), Filename: "test.txt"}, decoded)
+}
+
+func TestEncodeDataResponse(t *testing.T) {
+	encoded, err := encodeDataResponse(context.Background(), dataRes{})
+	assert.NoError(t, err)
+	assert.Equal(t, &agent.DataResponse{}, encoded)
+}
+
+func TestDecodeResultRequest(t *testing.T) {
+	decoded, err := decodeResultRequest(context.Background(), &agent.ResultRequest{})
+	assert.NoError(t, err)
+	assert.Equal(t, resultReq{}, decoded)
+}
+
+func TestEncodeResultResponse(t *testing.T) {
+	encoded, err := encodeResultResponse(context.Background(), resultRes{File: []byte("result")})
+	assert.NoError(t, err)
+	assert.Equal(t, &agent.ResultResponse{File: []byte("result")}, encoded)
+}
+
+func TestDecodeAttestationRequest(t *testing.T) {
+	nonce := [quoteprovider.Nonce]byte{}
+	req := &agent.AttestationRequest{TeeNonce: nonce[:]}
+	decoded, err := decodeAttestationRequest(context.Background(), req)
+	assert.NoError(t, err)
+	assert.Equal(t, attestationReq{TeeNonce: nonce}, decoded)
+}
+
+func TestEncodeAttestationResponse(t *testing.T) {
+	encoded, err := encodeAttestationResponse(context.Background(), attestationRes{File: []byte("attestation")})
+	assert.NoError(t, err)
+	assert.Equal(t, &agent.AttestationResponse{File: []byte("attestation")}, encoded)
+}

agent/api/logging.go

@@ -13,6 +13,9 @@ import (
 	"time"
 
 	"github.com/ultravioletrs/cocos/agent"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
 )
 
 var _ agent.Service = (*loggingMiddleware)(nil)
@@ -27,6 +30,43 @@ func LoggingMiddleware(svc agent.Service, logger *slog.Logger) agent.Service {
 	return &loggingMiddleware{logger, svc}
 }
 
+// State implements agent.Service.
+func (lm *loggingMiddleware) State() (state string) {
+	defer func(begin time.Time) {
+		message := fmt.Sprintf("Method State took %s to complete with state %s", time.Since(begin), state)
+		lm.logger.Info(message)
+	}(time.Now())
+	return lm.svc.State()
+}
+
+// InitComputation implements agent.Service.
+func (lm *loggingMiddleware) InitComputation(ctx context.Context, cmp agent.Computation) (err error) {
+	defer func(begin time.Time) {
+		message := fmt.Sprintf("Method InitComputation for computation id %s took %s to complete", cmp.ID, time.Since(begin))
+		if err != nil {
+			lm.logger.WithGroup(cmp.ID).Warn(fmt.Sprintf("%s with error: %s", message, err))
+			return
+		}
+		lm.logger.WithGroup(cmp.ID).Info(fmt.Sprintf("%s without errors", message))
+	}(time.Now())
+
+	return lm.svc.InitComputation(ctx, cmp)
+}
+
+// StopComputation implements agent.Service.
+func (lm *loggingMiddleware) StopComputation(ctx context.Context) (err error) {
+	defer func(begin time.Time) {
+		message := fmt.Sprintf("Method StopComputation took %s to complete", time.Since(begin))
+		if err != nil {
+			lm.logger.Warn(fmt.Sprintf("%s with error: %s", message, err))
+			return
+		}
+		lm.logger.Info(fmt.Sprintf("%s without errors", message))
+	}(time.Now())
+
+	return lm.svc.StopComputation(ctx)
+}
+
 func (lm *loggingMiddleware) Algo(ctx context.Context, algorithm agent.Algorithm) (err error) {
 	defer func(begin time.Time) {
 		message := fmt.Sprintf("Method Algo took %s to complete", time.Since(begin))
@@ -66,7 +106,7 @@ func (lm *loggingMiddleware) Result(ctx context.Context) (response []byte, err e
 	return lm.svc.Result(ctx)
 }
 
-func (lm *loggingMiddleware) Attestation(ctx context.Context, reportData [agent.ReportDataSize]byte) (response []byte, err error) {
+func (lm *loggingMiddleware) Attestation(ctx context.Context, reportData [quoteprovider.Nonce]byte, nonce [vtpm.Nonce]byte, attType config.AttestationType) (response []byte, err error) {
 	defer func(begin time.Time) {
 		message := fmt.Sprintf("Method Attestation took %s to complete", time.Since(begin))
 		if err != nil {
@@ -76,5 +116,5 @@ func (lm *loggingMiddleware) Attestation(ctx context.Context, reportData [agent.
 		lm.logger.Info(fmt.Sprintf("%s without errors", message))
 	}(time.Now())
 
-	return lm.svc.Attestation(ctx, reportData)
+	return lm.svc.Attestation(ctx, reportData, nonce, attType)
 }

agent/api/metrics.go

@@ -12,6 +12,9 @@ import (
 
 	"github.com/go-kit/kit/metrics"
 	"github.com/ultravioletrs/cocos/agent"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
 )
 
 var _ agent.Service = (*metricsMiddleware)(nil)
@@ -32,6 +35,36 @@ func MetricsMiddleware(svc agent.Service, counter metrics.Counter, latency metri
 	}
 }
 
+// State implements agent.Service.
+func (ms *metricsMiddleware) State() string {
+	defer func(begin time.Time) {
+		ms.counter.With("method", "state").Add(1)
+		ms.latency.With("method", "state").Observe(time.Since(begin).Seconds())
+	}(time.Now())
+
+	return ms.svc.State()
+}
+
+// InitComputation implements agent.Service.
+func (ms *metricsMiddleware) InitComputation(ctx context.Context, cmp agent.Computation) error {
+	defer func(begin time.Time) {
+		ms.counter.With("method", "init_computation").Add(1)
+		ms.latency.With("method", "init_computation").Observe(time.Since(begin).Seconds())
+	}(time.Now())
+
+	return ms.svc.InitComputation(ctx, cmp)
+}
+
+// StopComputation implements agent.Service.
+func (ms *metricsMiddleware) StopComputation(ctx context.Context) error {
+	defer func(begin time.Time) {
+		ms.counter.With("method", "stop_computation").Add(1)
+		ms.latency.With("method", "stop_computation").Observe(time.Since(begin).Seconds())
+	}(time.Now())
+
+	return ms.svc.StopComputation(ctx)
+}
+
 func (ms *metricsMiddleware) Algo(ctx context.Context, algorithm agent.Algorithm) error {
 	defer func(begin time.Time) {
 		ms.counter.With("method", "algo").Add(1)
@@ -59,11 +92,11 @@ func (ms *metricsMiddleware) Result(ctx context.Context) ([]byte, error) {
 	return ms.svc.Result(ctx)
 }
 
-func (ms *metricsMiddleware) Attestation(ctx context.Context, reportData [agent.ReportDataSize]byte) ([]byte, error) {
+func (ms *metricsMiddleware) Attestation(ctx context.Context, reportData [quoteprovider.Nonce]byte, nonce [vtpm.Nonce]byte, attType config.AttestationType) ([]byte, error) {
 	defer func(begin time.Time) {
 		ms.counter.With("method", "attestation").Add(1)
 		ms.latency.With("method", "attestation").Observe(time.Since(begin).Seconds())
 	}(time.Now())
 
-	return ms.svc.Attestation(ctx, reportData)
+	return ms.svc.Attestation(ctx, reportData, nonce, attType)
 }

agent/auth/auth.go

@@ -36,7 +36,6 @@ var (
 	ErrSignatureVerificationFailed = errors.New("signature verification failed")
 )
 
-//go:generate mockery --name Authenticator --output=../mocks --filename auth.go --quiet --note "Copyright (c) Ultraviolet \n // SPDX-License-Identifier: Apache-2.0"
 type Authenticator interface {
 	AuthenticateUser(ctx context.Context, role UserRole) (context.Context, error)
 }

agent/auth/mocks/auth.go

@@ -1,8 +1,8 @@
-// Code generated by mockery v2.43.2. DO NOT EDIT.
-
 // Copyright (c) Ultraviolet
 // SPDX-License-Identifier: Apache-2.0
 
+// Code generated by mockery v2.43.2. DO NOT EDIT.
+
 package mocks
 
 import (
@@ -18,6 +18,14 @@ type Authenticator struct {
 	mock.Mock
 }
 
+type Authenticator_Expecter struct {
+	mock *mock.Mock
+}
+
+func (_m *Authenticator) EXPECT() *Authenticator_Expecter {
+	return &Authenticator_Expecter{mock: &_m.Mock}
+}
+
 // AuthenticateUser provides a mock function with given fields: ctx, role
 func (_m *Authenticator) AuthenticateUser(ctx context.Context, role auth.UserRole) (context.Context, error) {
 	ret := _m.Called(ctx, role)
@@ -48,6 +56,35 @@ func (_m *Authenticator) AuthenticateUser(ctx context.Context, role auth.UserRol
 	return r0, r1
 }
 
+// Authenticator_AuthenticateUser_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'AuthenticateUser'
+type Authenticator_AuthenticateUser_Call struct {
+	*mock.Call
+}
+
+// AuthenticateUser is a helper method to define mock.On call
+//   - ctx context.Context
+//   - role auth.UserRole
+func (_e *Authenticator_Expecter) AuthenticateUser(ctx interface{}, role interface{}) *Authenticator_AuthenticateUser_Call {
+	return &Authenticator_AuthenticateUser_Call{Call: _e.mock.On("AuthenticateUser", ctx, role)}
+}
+
+func (_c *Authenticator_AuthenticateUser_Call) Run(run func(ctx context.Context, role auth.UserRole)) *Authenticator_AuthenticateUser_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(context.Context), args[1].(auth.UserRole))
+	})
+	return _c
+}
+
+func (_c *Authenticator_AuthenticateUser_Call) Return(_a0 context.Context, _a1 error) *Authenticator_AuthenticateUser_Call {
+	_c.Call.Return(_a0, _a1)
+	return _c
+}
+
+func (_c *Authenticator_AuthenticateUser_Call) RunAndReturn(run func(context.Context, auth.UserRole) (context.Context, error)) *Authenticator_AuthenticateUser_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
 // NewAuthenticator creates a new instance of Authenticator. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
 // The first argument is typically a *testing.T value.
 func NewAuthenticator(t interface {

agent/computations.go

@@ -13,14 +13,13 @@ import (
 var _ fmt.Stringer = (*Datasets)(nil)
 
 type AgentConfig struct {
-	LogLevel     string `json:"log_level"`
-	Host         string `json:"host"`
-	Port         string `json:"port"`
-	CertFile     string `json:"cert_file"`
-	KeyFile      string `json:"server_key"`
-	ServerCAFile string `json:"server_ca_file"`
-	ClientCAFile string `json:"client_ca_file"`
-	AttestedTls  bool   `json:"attested_tls"`
+	Host         string `json:"host,omitempty"`
+	Port         string `json:"port,omitempty"`
+	CertFile     string `json:"cert_file,omitempty"`
+	KeyFile      string `json:"server_key,omitempty"`
+	ServerCAFile string `json:"server_ca_file,omitempty"`
+	ClientCAFile string `json:"client_ca_file,omitempty"`
+	AttestedTls  bool   `json:"attested_tls,omitempty"`
 }
 
 type Computation struct {
@@ -30,7 +29,6 @@ type Computation struct {
 	Datasets        Datasets         `json:"datasets,omitempty"`
 	Algorithm       Algorithm        `json:"algorithm,omitempty"`
 	ResultConsumers []ResultConsumer `json:"result_consumers,omitempty"`
-	AgentConfig     AgentConfig      `json:"agent_config,omitempty"`
 }
 
 type ResultConsumer struct {

agent/computations_test.go

@@ -0,0 +1,132 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package agent
+
+import (
+	"context"
+	"encoding/json"
+	"reflect"
+	"testing"
+
+	"google.golang.org/grpc/metadata"
+)
+
+func TestDatasetsString(t *testing.T) {
+	datasets := Datasets{
+		{
+			Hash:     [32]byte{1, 2, 3},
+			UserKey:  []byte("user_key"),
+			Filename: "test.dat",
+		},
+	}
+
+	expected := `[{"hash":[1,2,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"user_key":"dXNlcl9rZXk=","filename":"test.dat"}]`
+	result := datasets.String()
+
+	if result != expected {
+		t.Errorf("Datasets.String() = %v, want %v", result, expected)
+	}
+}
+
+func TestIndexToContext(t *testing.T) {
+	ctx := context.Background()
+	index := 5
+
+	newCtx := IndexToContext(ctx, index)
+	result, ok := IndexFromContext(newCtx)
+
+	if !ok {
+		t.Errorf("IndexFromContext() ok = false, want true")
+	}
+
+	if result != index {
+		t.Errorf("IndexFromContext() = %v, want %v", result, index)
+	}
+}
+
+func TestDecompressFromContext(t *testing.T) {
+	tests := []struct {
+		name     string
+		ctx      context.Context
+		expected bool
+	}{
+		{
+			name:     "No decompress metadata",
+			ctx:      context.Background(),
+			expected: false,
+		},
+		{
+			name: "Decompress true",
+			ctx: metadata.NewIncomingContext(
+				context.Background(),
+				metadata.Pairs(DecompressKey, "true"),
+			),
+			expected: true,
+		},
+		{
+			name: "Decompress false",
+			ctx: metadata.NewIncomingContext(
+				context.Background(),
+				metadata.Pairs(DecompressKey, "false"),
+			),
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := DecompressFromContext(tt.ctx)
+			if result != tt.expected {
+				t.Errorf("DecompressFromContext() = %v, want %v", result, tt.expected)
+			}
+		})
+	}
+}
+
+func TestDecompressToContext(t *testing.T) {
+	ctx := context.Background()
+	decompress := true
+
+	newCtx := DecompressToContext(ctx, decompress)
+	md, ok := metadata.FromOutgoingContext(newCtx)
+
+	if !ok {
+		t.Errorf("metadata.FromOutgoingContext() ok = false, want true")
+	}
+
+	vals := md.Get(DecompressKey)
+	if len(vals) != 1 {
+		t.Errorf("len(md.Get(DecompressKey)) = %v, want 1", len(vals))
+	}
+
+	if vals[0] != "true" {
+		t.Errorf("md.Get(DecompressKey)[0] = %v, want 'true'", vals[0])
+	}
+}
+
+func TestAgentConfigJSON(t *testing.T) {
+	config := AgentConfig{
+		Host:         "localhost",
+		Port:         "8080",
+		CertFile:     "cert.pem",
+		KeyFile:      "key.pem",
+		ServerCAFile: "server_ca.pem",
+		ClientCAFile: "client_ca.pem",
+		AttestedTls:  true,
+	}
+
+	data, err := json.Marshal(config)
+	if err != nil {
+		t.Fatalf("Failed to marshal AgentConfig: %v", err)
+	}
+
+	var unmarshaledConfig AgentConfig
+	err = json.Unmarshal(data, &unmarshaledConfig)
+	if err != nil {
+		t.Fatalf("Failed to unmarshal AgentConfig: %v", err)
+	}
+
+	if !reflect.DeepEqual(config, unmarshaledConfig) {
+		t.Errorf("Unmarshaled config does not match original. Got %+v, want %+v", unmarshaledConfig, config)
+	}
+}

agent/cvms/api/grpc/client.go

@@ -0,0 +1,350 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package grpc
+
+import (
+	"context"
+	"log/slog"
+	"sync"
+	"time"
+
+	"github.com/absmach/magistrala/pkg/errors"
+	"github.com/ultravioletrs/cocos/agent"
+	"github.com/ultravioletrs/cocos/agent/cvms"
+	"github.com/ultravioletrs/cocos/agent/cvms/api/grpc/storage"
+	"github.com/ultravioletrs/cocos/agent/cvms/server"
+	"golang.org/x/sync/errgroup"
+	"google.golang.org/protobuf/proto"
+)
+
+const (
+	reconnectInterval = 5 * time.Second
+	sendTimeout       = 5 * time.Second
+	pendingMsgFile    = "pending_messages.json"
+)
+
+var (
+	errCorruptedManifest  = errors.New("received manifest may be corrupted")
+	errUnknonwMessageType = errors.New("unknown message type")
+)
+
+type PendingMessage struct {
+	Message *cvms.ClientStreamMessage
+	Time    time.Time
+}
+
+type CVMSClient struct {
+	mu            sync.Mutex
+	stream        cvms.Service_ProcessClient
+	svc           agent.Service
+	messageQueue  chan *cvms.ClientStreamMessage
+	logger        *slog.Logger
+	runReqManager *runRequestManager
+	sp            server.AgentServer
+	storage       storage.Storage
+	reconnectFn   func(context.Context) (cvms.Service_ProcessClient, error)
+}
+
+// NewClient returns new gRPC client instance.
+func NewClient(stream cvms.Service_ProcessClient, svc agent.Service, messageQueue chan *cvms.ClientStreamMessage, logger *slog.Logger, sp server.AgentServer, storageDir string, reconnectFn func(context.Context) (cvms.Service_ProcessClient, error)) (*CVMSClient, error) {
+	store, err := storage.NewFileStorage(storageDir)
+	if err != nil {
+		return nil, err
+	}
+
+	return &CVMSClient{
+		stream:        stream,
+		svc:           svc,
+		messageQueue:  messageQueue,
+		logger:        logger,
+		runReqManager: newRunRequestManager(),
+		sp:            sp,
+		storage:       store,
+		reconnectFn:   reconnectFn,
+	}, nil
+}
+
+func (client *CVMSClient) Process(ctx context.Context, cancel context.CancelFunc) error {
+	for {
+		err := client.processWithRetry(ctx)
+		if ctx.Err() != nil {
+			return ctx.Err()
+		}
+
+		client.logger.Info("Connection lost, attempting to reconnect...", "error", err)
+		time.Sleep(reconnectInterval)
+
+		stream, err := client.reconnectFn(ctx)
+		if err != nil {
+			client.logger.Error("Failed to reconnect", "error", err)
+			continue
+		}
+
+		client.mu.Lock()
+		client.stream = stream
+		client.mu.Unlock()
+	}
+}
+
+func (client *CVMSClient) processWithRetry(ctx context.Context) error {
+	eg, ctx := errgroup.WithContext(ctx)
+
+	eg.Go(func() error {
+		return client.handleIncomingMessages(ctx)
+	})
+
+	eg.Go(func() error {
+		return client.handleOutgoingMessages(ctx)
+	})
+
+	return eg.Wait()
+}
+
+func (client *CVMSClient) handleIncomingMessages(ctx context.Context) error {
+	for {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+			req, err := client.stream.Recv()
+			if err != nil {
+				return err
+			}
+			if err := client.processIncomingMessage(ctx, req); err != nil {
+				return err
+			}
+		}
+	}
+}
+
+func (client *CVMSClient) handleOutgoingMessages(ctx context.Context) error {
+	pendingMsgs, err := client.storage.Load()
+	if err != nil {
+		client.logger.Error("Failed to load pending messages", "error", err)
+	} else {
+		client.sendPendingMessages(pendingMsgs)
+	}
+
+	for {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		case msg := <-client.messageQueue:
+			if err := client.sendStreamMessage(msg); err != nil {
+				if err := client.storage.Add(msg); err != nil {
+					client.logger.Error("Failed to store pending message", "error", err)
+				}
+				client.logger.Error("Failed to send message, stored for retry", "error", err)
+			}
+		}
+	}
+}
+
+func (client *CVMSClient) sendStreamMessage(msg *cvms.ClientStreamMessage) error {
+	client.mu.Lock()
+	defer client.mu.Unlock()
+
+	return client.stream.Send(msg)
+}
+
+func (client *CVMSClient) sendPendingMessages(pending []storage.Message) {
+	for _, pm := range pending {
+		if err := client.sendStreamMessage(pm.Message); err != nil {
+			if err := client.storage.Add(pm.Message); err != nil {
+				client.logger.Error("Failed to store pending message", "error", err)
+			}
+			client.logger.Error("Failed to resend pending message", "error", err)
+		} else {
+			client.logger.Info("Successfully resent pending message")
+		}
+	}
+
+	if err := client.storage.Clear(); err != nil {
+		client.logger.Error("Failed to clear pending messages", "error", err)
+	}
+}
+
+func (client *CVMSClient) processIncomingMessage(ctx context.Context, req *cvms.ServerStreamMessage) error {
+	switch mes := req.Message.(type) {
+	case *cvms.ServerStreamMessage_RunReqChunks:
+		return client.handleRunReqChunks(ctx, mes)
+	case *cvms.ServerStreamMessage_StopComputation:
+		go client.handleStopComputation(ctx, mes)
+	case *cvms.ServerStreamMessage_AgentStateReq:
+		client.handleAgentStateReq(mes)
+	default:
+		return errUnknonwMessageType
+	}
+	return nil
+}
+
+func (client *CVMSClient) handleAgentStateReq(mes *cvms.ServerStreamMessage_AgentStateReq) {
+	state := client.svc.State()
+
+	msg := &cvms.ClientStreamMessage_AgentStateRes{
+		AgentStateRes: &cvms.AgentStateRes{
+			State: state,
+			Id:    mes.AgentStateReq.Id,
+		},
+	}
+
+	client.sendMessage(&cvms.ClientStreamMessage{Message: msg})
+}
+
+func (client *CVMSClient) handleRunReqChunks(ctx context.Context, msg *cvms.ServerStreamMessage_RunReqChunks) error {
+	buffer, complete := client.runReqManager.addChunk(msg.RunReqChunks.Id, msg.RunReqChunks.Data, msg.RunReqChunks.IsLast)
+
+	if complete {
+		var runReq cvms.ComputationRunReq
+		if err := proto.Unmarshal(buffer, &runReq); err != nil {
+			return errors.Wrap(err, errCorruptedManifest)
+		}
+
+		go client.executeRun(ctx, &runReq)
+	}
+
+	return nil
+}
+
+func (client *CVMSClient) executeRun(ctx context.Context, runReq *cvms.ComputationRunReq) {
+	ac := agent.Computation{
+		ID:          runReq.Id,
+		Name:        runReq.Name,
+		Description: runReq.Description,
+	}
+
+	if runReq.Algorithm != nil {
+		ac.Algorithm = agent.Algorithm{
+			Hash:    [32]byte(runReq.Algorithm.Hash),
+			UserKey: runReq.Algorithm.UserKey,
+		}
+	}
+
+	for _, ds := range runReq.Datasets {
+		ac.Datasets = append(ac.Datasets, agent.Dataset{
+			Hash:    [32]byte(ds.Hash),
+			UserKey: ds.UserKey,
+		})
+	}
+
+	for _, rc := range runReq.ResultConsumers {
+		ac.ResultConsumers = append(ac.ResultConsumers, agent.ResultConsumer{
+			UserKey: rc.UserKey,
+		})
+	}
+
+	if err := client.svc.InitComputation(ctx, ac); err != nil {
+		client.logger.Warn(err.Error())
+		return
+	}
+
+	client.mu.Lock()
+	defer client.mu.Unlock()
+
+	if runReq.AgentConfig == nil {
+		runReq.AgentConfig = &cvms.AgentConfig{}
+	}
+
+	runRes := &cvms.ClientStreamMessage_RunRes{
+		RunRes: &cvms.RunResponse{
+			ComputationId: runReq.Id,
+		},
+	}
+
+	if err := client.sp.Start(agent.AgentConfig{
+		Port:         runReq.AgentConfig.Port,
+		Host:         runReq.AgentConfig.Host,
+		CertFile:     runReq.AgentConfig.CertFile,
+		KeyFile:      runReq.AgentConfig.KeyFile,
+		ServerCAFile: runReq.AgentConfig.ServerCaFile,
+		ClientCAFile: runReq.AgentConfig.ClientCaFile,
+		AttestedTls:  runReq.AgentConfig.AttestedTls,
+	}, ac); err != nil {
+		client.logger.Warn(err.Error())
+		runRes.RunRes.Error = err.Error()
+	}
+
+	client.sendMessage(&cvms.ClientStreamMessage{Message: runRes})
+}
+
+func (client *CVMSClient) handleStopComputation(ctx context.Context, mes *cvms.ServerStreamMessage_StopComputation) {
+	msg := &cvms.ClientStreamMessage_StopComputationRes{
+		StopComputationRes: &cvms.StopComputationResponse{
+			ComputationId: mes.StopComputation.ComputationId,
+		},
+	}
+	if err := client.svc.StopComputation(ctx); err != nil {
+		msg.StopComputationRes.Message = err.Error()
+	}
+
+	client.mu.Lock()
+	if err := client.sp.Stop(); err != nil {
+		msg.StopComputationRes.Message = err.Error()
+	}
+	client.mu.Unlock()
+
+	client.sendMessage(&cvms.ClientStreamMessage{Message: msg})
+}
+
+func (client *CVMSClient) sendMessage(mes *cvms.ClientStreamMessage) {
+	ctx, cancel := context.WithTimeout(context.Background(), sendTimeout)
+	defer cancel()
+
+	select {
+	case client.messageQueue <- mes:
+	case <-ctx.Done():
+		client.logger.Warn("Failed to send message: timeout exceeded")
+	}
+}
+
+type runRequestManager struct {
+	requests map[string]*runRequest
+	mu       sync.Mutex
+}
+
+type runRequest struct {
+	buffer    []byte
+	lastChunk time.Time
+	timer     *time.Timer
+}
+
+func newRunRequestManager() *runRequestManager {
+	return &runRequestManager{
+		requests: make(map[string]*runRequest),
+	}
+}
+
+func (m *runRequestManager) addChunk(id string, chunk []byte, isLast bool) ([]byte, bool) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	req, exists := m.requests[id]
+	if !exists {
+		req = &runRequest{
+			buffer:    make([]byte, 0),
+			lastChunk: time.Now(),
+			timer:     time.AfterFunc(runReqTimeout, func() { m.timeoutRequest(id) }),
+		}
+		m.requests[id] = req
+	}
+
+	req.buffer = append(req.buffer, chunk...)
+	req.lastChunk = time.Now()
+	req.timer.Reset(runReqTimeout)
+
+	if isLast {
+		delete(m.requests, id)
+		req.timer.Stop()
+		return req.buffer, true
+	}
+
+	return nil, false
+}
+
+func (m *runRequestManager) timeoutRequest(id string) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	delete(m.requests, id)
+	// Log timeout or handle it as needed
+}

agent/cvms/api/grpc/client_test.go

@@ -0,0 +1,209 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package grpc
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	mglog "github.com/absmach/magistrala/logger"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/ultravioletrs/cocos/agent/cvms"
+	servermocks "github.com/ultravioletrs/cocos/agent/cvms/server/mocks"
+	"github.com/ultravioletrs/cocos/agent/mocks"
+	"google.golang.org/grpc"
+	"google.golang.org/protobuf/proto"
+)
+
+type mockStream struct {
+	mock.Mock
+	grpc.ClientStream
+}
+
+func (m *mockStream) Recv() (*cvms.ServerStreamMessage, error) {
+	args := m.Called()
+	return args.Get(0).(*cvms.ServerStreamMessage), args.Error(1)
+}
+
+func (m *mockStream) Send(msg *cvms.ClientStreamMessage) error {
+	args := m.Called(msg)
+	return args.Error(0)
+}
+
+func TestManagerClient_Process(t *testing.T) {
+	tests := []struct {
+		name        string
+		setupMocks  func(mockStream *mockStream, mockSvc *mocks.Service, mockServerSvc *servermocks.AgentServer)
+		expectError bool
+		errorMsg    string
+	}{
+		{
+			name: "Stop computation",
+			setupMocks: func(mockStream *mockStream, mockSvc *mocks.Service, mockServerSvc *servermocks.AgentServer) {
+				mockStream.On("Recv").Return(&cvms.ServerStreamMessage{
+					Message: &cvms.ServerStreamMessage_StopComputation{
+						StopComputation: &cvms.StopComputation{},
+					},
+				}, nil)
+				mockStream.On("Send", mock.Anything).Return(nil)
+				mockSvc.On("StopComputation", mock.Anything).Return(nil)
+				mockServerSvc.On("Stop").Return(nil)
+			},
+			expectError: true,
+			errorMsg:    "context deadline exceeded",
+		},
+		{
+			name: "Run request chunks",
+			setupMocks: func(mockStream *mockStream, mockSvc *mocks.Service, mockServerSvc *servermocks.AgentServer) {
+				mockStream.On("Recv").Return(&cvms.ServerStreamMessage{
+					Message: &cvms.ServerStreamMessage_RunReqChunks{
+						RunReqChunks: &cvms.RunReqChunks{},
+					},
+				}, nil)
+				mockStream.On("Send", mock.Anything).Return(nil).Once()
+				mockSvc.On("Run", mock.Anything, mock.Anything).Return("", assert.AnError).Once()
+			},
+			expectError: true,
+		},
+		{
+			name: "Receive error",
+			setupMocks: func(mockStream *mockStream, mockSvc *mocks.Service, mockServerSvc *servermocks.AgentServer) {
+				mockStream.On("Recv").Return(&cvms.ServerStreamMessage{}, assert.AnError)
+			},
+			expectError: true,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			mockStream := new(mockStream)
+			mockSvc := new(mocks.Service)
+			mockServerSvc := new(servermocks.AgentServer)
+			messageQueue := make(chan *cvms.ClientStreamMessage)
+			logger := mglog.NewMock()
+
+			go func() {
+				<-messageQueue
+			}()
+
+			client, err := NewClient(mockStream, mockSvc, messageQueue, logger, mockServerSvc, t.TempDir(), func(ctx context.Context) (cvms.Service_ProcessClient, error) { return nil, nil })
+			assert.NoError(t, err)
+
+			ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
+			defer cancel()
+
+			tc.setupMocks(mockStream, mockSvc, mockServerSvc)
+
+			err = client.Process(ctx, cancel)
+
+			if tc.expectError {
+				assert.Error(t, err)
+				if tc.errorMsg != "" {
+					assert.Contains(t, err.Error(), tc.errorMsg)
+				}
+			} else {
+				assert.NoError(t, err)
+			}
+		})
+	}
+}
+
+func TestManagerClient_handleRunReqChunks(t *testing.T) {
+	mockStream := new(mockStream)
+	mockSvc := new(mocks.Service)
+	mockServerSvc := new(servermocks.AgentServer)
+	messageQueue := make(chan *cvms.ClientStreamMessage, 10)
+	logger := mglog.NewMock()
+
+	client, err := NewClient(mockStream, mockSvc, messageQueue, logger, mockServerSvc, t.TempDir(), func(ctx context.Context) (cvms.Service_ProcessClient, error) { return nil, nil })
+	assert.NoError(t, err)
+
+	runReq := &cvms.ComputationRunReq{
+		Id: "test-id",
+	}
+	runReqBytes, _ := proto.Marshal(runReq)
+
+	chunk1 := &cvms.ServerStreamMessage_RunReqChunks{
+		RunReqChunks: &cvms.RunReqChunks{
+			Id:     "chunk-1",
+			Data:   runReqBytes[:len(runReqBytes)/2],
+			IsLast: false,
+		},
+	}
+	chunk2 := &cvms.ServerStreamMessage_RunReqChunks{
+		RunReqChunks: &cvms.RunReqChunks{
+			Id:     "chunk-1",
+			Data:   runReqBytes[len(runReqBytes)/2:],
+			IsLast: true,
+		},
+	}
+
+	mockSvc.On("InitComputation", mock.Anything, mock.Anything).Return(nil)
+	mockServerSvc.On("Start", mock.Anything, mock.Anything, mock.Anything).Return(nil)
+
+	err = client.handleRunReqChunks(context.Background(), chunk1)
+	assert.NoError(t, err)
+
+	err = client.handleRunReqChunks(context.Background(), chunk2)
+	assert.NoError(t, err)
+
+	// Wait for the goroutine to finish
+	time.Sleep(50 * time.Millisecond)
+
+	mockSvc.AssertExpectations(t)
+	assert.Len(t, messageQueue, 1)
+
+	msg := <-messageQueue
+	runRes, ok := msg.Message.(*cvms.ClientStreamMessage_RunRes)
+	assert.True(t, ok)
+	assert.Equal(t, "test-id", runRes.RunRes.ComputationId)
+}
+
+func TestManagerClient_handleStopComputation(t *testing.T) {
+	mockStream := new(mockStream)
+	mockSvc := new(mocks.Service)
+	mockServerSvc := new(servermocks.AgentServer)
+	messageQueue := make(chan *cvms.ClientStreamMessage, 10)
+	logger := mglog.NewMock()
+
+	client, err := NewClient(mockStream, mockSvc, messageQueue, logger, mockServerSvc, t.TempDir(), func(ctx context.Context) (cvms.Service_ProcessClient, error) { return nil, nil })
+	assert.NoError(t, err)
+
+	stopReq := &cvms.ServerStreamMessage_StopComputation{
+		StopComputation: &cvms.StopComputation{
+			ComputationId: "test-comp-id",
+		},
+	}
+
+	mockSvc.On("StopComputation", mock.Anything).Return(nil)
+	mockServerSvc.On("Stop").Return(nil)
+
+	client.handleStopComputation(context.Background(), stopReq)
+
+	// Wait for the goroutine to finish
+	time.Sleep(50 * time.Millisecond)
+
+	mockSvc.AssertExpectations(t)
+	assert.Len(t, messageQueue, 1)
+
+	msg := <-messageQueue
+	stopRes, ok := msg.Message.(*cvms.ClientStreamMessage_StopComputationRes)
+	assert.True(t, ok)
+	assert.Equal(t, "test-comp-id", stopRes.StopComputationRes.ComputationId)
+	assert.Empty(t, stopRes.StopComputationRes.Message)
+}
+
+func TestManagerClient_timeoutRequest(t *testing.T) {
+	rm := newRunRequestManager()
+	rm.requests["test-id"] = &runRequest{
+		timer:     time.NewTimer(100 * time.Millisecond),
+		buffer:    []byte("test-data"),
+		lastChunk: time.Now(),
+	}
+
+	rm.timeoutRequest("test-id")
+
+	assert.Len(t, rm.requests, 0)
+}

agent/cvms/api/grpc/doc.go

@@ -0,0 +1,5 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+// Package grpc contains implementation of kit service gRPC API.
+package grpc

agent/cvms/api/grpc/server.go

@@ -0,0 +1,133 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package grpc
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"io"
+	"time"
+
+	"github.com/ultravioletrs/cocos/agent/cvms"
+	"golang.org/x/sync/errgroup"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/peer"
+	"google.golang.org/protobuf/proto"
+)
+
+var (
+	_                cvms.ServiceServer = (*grpcServer)(nil)
+	ErrUnexpectedMsg                    = errors.New("unknown message type")
+)
+
+const (
+	bufferSize    = 1024 * 1024 // 1 MB
+	runReqTimeout = 30 * time.Second
+)
+
+type SendFunc func(*cvms.ServerStreamMessage) error
+
+type grpcServer struct {
+	cvms.UnimplementedServiceServer
+	incoming chan *cvms.ClientStreamMessage
+	svc      Service
+}
+
+type Service interface {
+	Run(ctx context.Context, ipAddress string, sendMessage SendFunc, authInfo credentials.AuthInfo)
+}
+
+// NewServer returns new AuthServiceServer instance.
+func NewServer(incoming chan *cvms.ClientStreamMessage, svc Service) cvms.ServiceServer {
+	return &grpcServer{
+		incoming: incoming,
+		svc:      svc,
+	}
+}
+
+func (s *grpcServer) Process(stream cvms.Service_ProcessServer) error {
+	client, ok := peer.FromContext(stream.Context())
+	if !ok {
+		return errors.New("failed to get peer info")
+	}
+
+	eg, ctx := errgroup.WithContext(stream.Context())
+
+	eg.Go(func() error {
+		for {
+			select {
+			case <-ctx.Done():
+				return ctx.Err()
+			default:
+				req, err := stream.Recv()
+				if err != nil {
+					return err
+				}
+				s.incoming <- req
+			}
+		}
+	})
+
+	eg.Go(func() error {
+		sendMessage := func(msg *cvms.ServerStreamMessage) error {
+			select {
+			case <-ctx.Done():
+				return ctx.Err()
+			default:
+				switch m := msg.Message.(type) {
+				case *cvms.ServerStreamMessage_RunReq:
+					return s.sendRunReqInChunks(stream, m.RunReq)
+				default:
+					return stream.Send(msg)
+				}
+			}
+		}
+
+		s.svc.Run(ctx, client.Addr.String(), sendMessage, client.AuthInfo)
+		return nil
+	})
+
+	return eg.Wait()
+}
+
+func (s *grpcServer) sendRunReqInChunks(stream cvms.Service_ProcessServer, runReq *cvms.ComputationRunReq) error {
+	data, err := proto.Marshal(runReq)
+	if err != nil {
+		return err
+	}
+
+	dataBuffer := bytes.NewBuffer(data)
+	buf := make([]byte, bufferSize)
+
+	for {
+		n, err := dataBuffer.Read(buf)
+		isLast := false
+
+		if err == io.EOF {
+			isLast = true
+		} else if err != nil {
+			return err
+		}
+
+		chunk := &cvms.ServerStreamMessage{
+			Message: &cvms.ServerStreamMessage_RunReqChunks{
+				RunReqChunks: &cvms.RunReqChunks{
+					Id:     runReq.Id,
+					Data:   buf[:n],
+					IsLast: isLast,
+				},
+			},
+		}
+
+		if err := stream.Send(chunk); err != nil {
+			return err
+		}
+
+		if isLast {
+			break
+		}
+	}
+
+	return nil
+}

agent/cvms/api/grpc/server_test.go

@@ -0,0 +1,273 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package grpc
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/absmach/magistrala/pkg/errors"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/ultravioletrs/cocos/agent/cvms"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/peer"
+)
+
+type mockServerStream struct {
+	mock.Mock
+	cvms.Service_ProcessServer
+}
+
+func (m *mockServerStream) Send(msg *cvms.ServerStreamMessage) error {
+	args := m.Called(msg)
+	return args.Error(0)
+}
+
+func (m *mockServerStream) Recv() (*cvms.ClientStreamMessage, error) {
+	args := m.Called()
+	return args.Get(0).(*cvms.ClientStreamMessage), args.Error(1)
+}
+
+func (m *mockServerStream) Context() context.Context {
+	args := m.Called()
+	return args.Get(0).(context.Context)
+}
+
+type mockService struct {
+	mock.Mock
+}
+
+func (m *mockService) Run(ctx context.Context, ipAddress string, sendMessage SendFunc, authInfo credentials.AuthInfo) {
+	m.Called(ctx, ipAddress, sendMessage, authInfo)
+}
+
+func TestNewServer(t *testing.T) {
+	incoming := make(chan *cvms.ClientStreamMessage)
+	mockSvc := new(mockService)
+
+	server := NewServer(incoming, mockSvc)
+
+	assert.NotNil(t, server)
+	assert.IsType(t, &grpcServer{}, server)
+}
+
+func TestGrpcServer_Process(t *testing.T) {
+	tests := []struct {
+		name          string
+		recvReturn    *cvms.ClientStreamMessage
+		recvError     error
+		expectedError string
+	}{
+		{
+			name:          "Process with context deadline exceeded",
+			recvReturn:    &cvms.ClientStreamMessage{},
+			recvError:     nil,
+			expectedError: "context deadline exceeded",
+		},
+		{
+			name:          "Process with Recv error",
+			recvReturn:    &cvms.ClientStreamMessage{},
+			recvError:     errors.New("recv error"),
+			expectedError: "recv error",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			incoming := make(chan *cvms.ClientStreamMessage, 1)
+			mockSvc := new(mockService)
+			server := NewServer(incoming, mockSvc).(*grpcServer)
+
+			mockStream := new(mockServerStream)
+			ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
+			defer cancel()
+
+			mockStream.On("Context").Return(peer.NewContext(ctx, &peer.Peer{
+				Addr:     mockAddr{},
+				AuthInfo: mockAuthInfo{},
+			}))
+
+			if tt.recvError == nil {
+				go func() {
+					for mes := range incoming {
+						assert.NotNil(t, mes)
+					}
+				}()
+			}
+
+			mockStream.On("Recv").Return(tt.recvReturn, tt.recvError)
+			mockSvc.On("Run", mock.Anything, "test", mock.Anything, mock.AnythingOfType("mockAuthInfo")).Return()
+
+			err := server.Process(mockStream)
+
+			assert.Error(t, err)
+			assert.Contains(t, err.Error(), tt.expectedError)
+			mockStream.AssertExpectations(t)
+			mockSvc.AssertExpectations(t)
+		})
+	}
+}
+
+func TestGrpcServer_sendRunReqInChunks(t *testing.T) {
+	incoming := make(chan *cvms.ClientStreamMessage)
+	mockSvc := new(mockService)
+	server := NewServer(incoming, mockSvc).(*grpcServer)
+
+	mockStream := new(mockServerStream)
+
+	runReq := &cvms.ComputationRunReq{
+		Id: "test-id",
+	}
+
+	largePayload := make([]byte, bufferSize*2)
+	for i := range largePayload {
+		largePayload[i] = byte(i % 256)
+	}
+	runReq.Algorithm = &cvms.Algorithm{}
+	runReq.Algorithm.UserKey = largePayload
+
+	mockStream.On("Send", mock.AnythingOfType("*cvms.ServerStreamMessage")).Return(nil).Times(4)
+
+	err := server.sendRunReqInChunks(mockStream, runReq)
+
+	assert.NoError(t, err)
+	mockStream.AssertExpectations(t)
+
+	calls := mockStream.Calls
+	assert.Equal(t, 4, len(calls))
+
+	for i, call := range calls {
+		msg := call.Arguments[0].(*cvms.ServerStreamMessage)
+		chunk := msg.GetRunReqChunks()
+
+		assert.NotNil(t, chunk)
+		assert.Equal(t, "test-id", chunk.Id)
+
+		if i < 3 {
+			assert.False(t, chunk.IsLast)
+		} else {
+			assert.Equal(t, 0, len(chunk.Data))
+			assert.True(t, chunk.IsLast)
+		}
+	}
+}
+
+type mockAddr struct{}
+
+func (mockAddr) Network() string { return "test network" }
+func (mockAddr) String() string  { return "test" }
+
+type mockAuthInfo struct{}
+
+func (mockAuthInfo) AuthType() string { return "test auth" }
+
+func TestGrpcServer_ProcessWithMockService(t *testing.T) {
+	tests := []struct {
+		name        string
+		setupMockFn func(*mockService, *mockServerStream)
+	}{
+		{
+			name: "Run Request Test",
+			setupMockFn: func(mockSvc *mockService, mockStream *mockServerStream) {
+				mockSvc.On("Run", mock.Anything, "test", mock.Anything, mock.AnythingOfType("mockAuthInfo")).
+					Run(func(args mock.Arguments) {
+						sendFunc := args.Get(2).(SendFunc)
+						runReq := &cvms.ComputationRunReq{Id: "test-run-id"}
+						err := sendFunc(&cvms.ServerStreamMessage{
+							Message: &cvms.ServerStreamMessage_RunReq{
+								RunReq: runReq,
+							},
+						})
+						assert.NoError(t, err)
+					}).
+					Return()
+
+				mockStream.On("Send", mock.MatchedBy(func(msg *cvms.ServerStreamMessage) bool {
+					chunks := msg.GetRunReqChunks()
+					return chunks != nil && chunks.Id == "test-run-id"
+				})).Return(nil)
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			incoming := make(chan *cvms.ClientStreamMessage, 10)
+			mockSvc := new(mockService)
+			server := NewServer(incoming, mockSvc).(*grpcServer)
+
+			go func() {
+				for mes := range incoming {
+					assert.NotNil(t, mes)
+				}
+			}()
+
+			mockStream := new(mockServerStream)
+			ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
+			defer cancel()
+
+			peerCtx := peer.NewContext(ctx, &peer.Peer{
+				Addr:     mockAddr{},
+				AuthInfo: mockAuthInfo{},
+			})
+
+			mockStream.On("Context").Return(peerCtx)
+			mockStream.On("Recv").Return(&cvms.ClientStreamMessage{}, nil).Maybe()
+
+			tt.setupMockFn(mockSvc, mockStream)
+
+			go func() {
+				time.Sleep(150 * time.Millisecond)
+				cancel()
+			}()
+
+			err := server.Process(mockStream)
+
+			assert.Error(t, err)
+			assert.Contains(t, err.Error(), "context canceled")
+			mockStream.AssertExpectations(t)
+			mockSvc.AssertExpectations(t)
+		})
+	}
+}
+
+func TestGrpcServer_sendRunReqInChunksError(t *testing.T) {
+	incoming := make(chan *cvms.ClientStreamMessage)
+	mockSvc := new(mockService)
+	server := NewServer(incoming, mockSvc).(*grpcServer)
+
+	mockStream := new(mockServerStream)
+
+	runReq := &cvms.ComputationRunReq{
+		Id: "test-id",
+	}
+
+	// Simulate an error when sending
+	mockStream.On("Send", mock.AnythingOfType("*cvms.ServerStreamMessage")).Return(errors.New("send error")).Once()
+
+	err := server.sendRunReqInChunks(mockStream, runReq)
+
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "send error")
+	mockStream.AssertExpectations(t)
+}
+
+func TestGrpcServer_ProcessMissingPeerInfo(t *testing.T) {
+	incoming := make(chan *cvms.ClientStreamMessage)
+	mockSvc := new(mockService)
+	server := NewServer(incoming, mockSvc).(*grpcServer)
+
+	mockStream := new(mockServerStream)
+	ctx := context.Background()
+
+	// Return a context without peer info
+	mockStream.On("Context").Return(ctx)
+
+	err := server.Process(mockStream)
+
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "failed to get peer info")
+	mockStream.AssertExpectations(t)
+}

agent/cvms/api/grpc/storage/mocks/storage.go

@@ -0,0 +1,234 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+// Code generated by mockery v2.43.2. DO NOT EDIT.
+
+package mocks
+
+import (
+	mock "github.com/stretchr/testify/mock"
+	cvms "github.com/ultravioletrs/cocos/agent/cvms"
+
+	storage "github.com/ultravioletrs/cocos/agent/cvms/api/grpc/storage"
+)
+
+// Storage is an autogenerated mock type for the Storage type
+type Storage struct {
+	mock.Mock
+}
+
+type Storage_Expecter struct {
+	mock *mock.Mock
+}
+
+func (_m *Storage) EXPECT() *Storage_Expecter {
+	return &Storage_Expecter{mock: &_m.Mock}
+}
+
+// Add provides a mock function with given fields: msg
+func (_m *Storage) Add(msg *cvms.ClientStreamMessage) error {
+	ret := _m.Called(msg)
+
+	if len(ret) == 0 {
+		panic("no return value specified for Add")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(*cvms.ClientStreamMessage) error); ok {
+		r0 = rf(msg)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Storage_Add_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Add'
+type Storage_Add_Call struct {
+	*mock.Call
+}
+
+// Add is a helper method to define mock.On call
+//   - msg *cvms.ClientStreamMessage
+func (_e *Storage_Expecter) Add(msg interface{}) *Storage_Add_Call {
+	return &Storage_Add_Call{Call: _e.mock.On("Add", msg)}
+}
+
+func (_c *Storage_Add_Call) Run(run func(msg *cvms.ClientStreamMessage)) *Storage_Add_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(*cvms.ClientStreamMessage))
+	})
+	return _c
+}
+
+func (_c *Storage_Add_Call) Return(_a0 error) *Storage_Add_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *Storage_Add_Call) RunAndReturn(run func(*cvms.ClientStreamMessage) error) *Storage_Add_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// Clear provides a mock function with given fields:
+func (_m *Storage) Clear() error {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Clear")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Storage_Clear_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Clear'
+type Storage_Clear_Call struct {
+	*mock.Call
+}
+
+// Clear is a helper method to define mock.On call
+func (_e *Storage_Expecter) Clear() *Storage_Clear_Call {
+	return &Storage_Clear_Call{Call: _e.mock.On("Clear")}
+}
+
+func (_c *Storage_Clear_Call) Run(run func()) *Storage_Clear_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run()
+	})
+	return _c
+}
+
+func (_c *Storage_Clear_Call) Return(_a0 error) *Storage_Clear_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *Storage_Clear_Call) RunAndReturn(run func() error) *Storage_Clear_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// Load provides a mock function with given fields:
+func (_m *Storage) Load() ([]storage.Message, error) {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Load")
+	}
+
+	var r0 []storage.Message
+	var r1 error
+	if rf, ok := ret.Get(0).(func() ([]storage.Message, error)); ok {
+		return rf()
+	}
+	if rf, ok := ret.Get(0).(func() []storage.Message); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).([]storage.Message)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func() error); ok {
+		r1 = rf()
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// Storage_Load_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Load'
+type Storage_Load_Call struct {
+	*mock.Call
+}
+
+// Load is a helper method to define mock.On call
+func (_e *Storage_Expecter) Load() *Storage_Load_Call {
+	return &Storage_Load_Call{Call: _e.mock.On("Load")}
+}
+
+func (_c *Storage_Load_Call) Run(run func()) *Storage_Load_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run()
+	})
+	return _c
+}
+
+func (_c *Storage_Load_Call) Return(_a0 []storage.Message, _a1 error) *Storage_Load_Call {
+	_c.Call.Return(_a0, _a1)
+	return _c
+}
+
+func (_c *Storage_Load_Call) RunAndReturn(run func() ([]storage.Message, error)) *Storage_Load_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// Save provides a mock function with given fields: messages
+func (_m *Storage) Save(messages []storage.Message) error {
+	ret := _m.Called(messages)
+
+	if len(ret) == 0 {
+		panic("no return value specified for Save")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func([]storage.Message) error); ok {
+		r0 = rf(messages)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Storage_Save_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Save'
+type Storage_Save_Call struct {
+	*mock.Call
+}
+
+// Save is a helper method to define mock.On call
+//   - messages []storage.Message
+func (_e *Storage_Expecter) Save(messages interface{}) *Storage_Save_Call {
+	return &Storage_Save_Call{Call: _e.mock.On("Save", messages)}
+}
+
+func (_c *Storage_Save_Call) Run(run func(messages []storage.Message)) *Storage_Save_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].([]storage.Message))
+	})
+	return _c
+}
+
+func (_c *Storage_Save_Call) Return(_a0 error) *Storage_Save_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *Storage_Save_Call) RunAndReturn(run func([]storage.Message) error) *Storage_Save_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// NewStorage creates a new instance of Storage. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewStorage(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *Storage {
+	mock := &Storage{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

agent/cvms/api/grpc/storage/storage.go

@@ -0,0 +1,111 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package storage
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+
+	"github.com/ultravioletrs/cocos/agent/cvms"
+)
+
+// Message represents a pending message with its timestamp.
+type Message struct {
+	Message *cvms.ClientStreamMessage
+	Time    time.Time
+}
+
+// Storage defines the interface for message persistence operations.
+type Storage interface {
+	// Load retrieves all pending messages from storage.
+	Load() ([]Message, error)
+
+	// Save persists the given messages to storage.
+	Save(messages []Message) error
+
+	// Add appends a new message to storage.
+	Add(msg *cvms.ClientStreamMessage) error
+
+	// Clear removes all messages from storage.
+	Clear() error
+}
+
+// FileStorage implements Storage interface using file-based persistence.
+type FileStorage struct {
+	mu   sync.Mutex
+	path string
+	msgs []Message
+}
+
+// NewFileStorage creates a new file-based storage instance.
+func NewFileStorage(storageDir string) (*FileStorage, error) {
+	if err := os.MkdirAll(storageDir, 0o755); err != nil {
+		return nil, err
+	}
+
+	return &FileStorage{
+		path: filepath.Join(storageDir, "pending_messages.json"),
+		msgs: make([]Message, 0),
+	}, nil
+}
+
+func (fs *FileStorage) Load() ([]Message, error) {
+	fs.mu.Lock()
+	defer fs.mu.Unlock()
+
+	data, err := os.ReadFile(fs.path)
+	if os.IsNotExist(err) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if err := json.Unmarshal(data, &fs.msgs); err != nil {
+		return nil, err
+	}
+
+	return fs.msgs, nil
+}
+
+func (fs *FileStorage) Save(messages []Message) error {
+	fs.mu.Lock()
+	defer fs.mu.Unlock()
+
+	fs.msgs = messages
+
+	data, err := json.Marshal(messages)
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(fs.path, data, 0o644)
+}
+
+func (fs *FileStorage) Add(msg *cvms.ClientStreamMessage) error {
+	fs.mu.Lock()
+	defer fs.mu.Unlock()
+
+	fs.msgs = append(fs.msgs, Message{
+		Message: msg,
+		Time:    time.Now(),
+	})
+
+	data, err := json.Marshal(fs.msgs)
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(fs.path, data, 0o644)
+}
+
+func (fs *FileStorage) Clear() error {
+	fs.mu.Lock()
+	defer fs.mu.Unlock()
+
+	fs.msgs = make([]Message, 0)
+	return os.WriteFile(fs.path, []byte("[]"), 0o644)
+}

agent/cvms/cvms.proto

@@ -0,0 +1,114 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+syntax = "proto3";
+
+import "google/protobuf/timestamp.proto";
+
+package cvms;
+
+option go_package = "./cvms";
+
+service Service {
+  rpc Process(stream ClientStreamMessage) returns (stream ServerStreamMessage) {}
+}
+
+message AgentStateReq {
+  string id = 1;
+}
+
+message AgentStateRes {
+  string id = 1;
+  string state = 2;
+}
+
+message StopComputation {
+  string computation_id = 1;
+}
+
+message StopComputationResponse {
+  string computation_id = 1;
+  string message = 2;
+}
+
+message RunResponse{
+  string computation_id = 1;
+  string error = 2;
+}
+
+message AgentEvent {
+  string event_type = 1;
+	google.protobuf.Timestamp timestamp = 2;
+	string	computation_id = 3;
+	bytes	details = 4;
+	string	originator = 5;
+	string	status = 6;
+}
+
+message AgentLog {
+  string message = 1;
+  string computation_id = 2;
+  string level = 3;
+  google.protobuf.Timestamp timestamp = 4;
+}
+
+message ClientStreamMessage {
+  oneof message {
+    AgentLog agent_log = 1;
+    AgentEvent agent_event = 2;
+    RunResponse run_res = 3;
+    StopComputationResponse stopComputationRes = 4;
+    AgentStateRes agentStateRes = 5;
+  }
+}
+
+message ServerStreamMessage {
+  oneof message {
+    RunReqChunks runReqChunks = 1;
+    ComputationRunReq runReq = 2;
+    StopComputation stopComputation = 3;
+    AgentStateReq agentStateReq = 4;
+  }
+}
+
+message RunReqChunks {
+  bytes data = 1;
+  string id = 2;
+  bool is_last = 3;
+}
+
+message ComputationRunReq {
+  string id = 1;
+  string name = 2;
+  string description = 3;
+  repeated Dataset datasets = 4;
+  Algorithm algorithm = 5;
+  repeated ResultConsumer result_consumers = 6;
+  AgentConfig agent_config = 7;
+}
+
+message ResultConsumer {
+  bytes userKey = 1;
+}
+
+message Dataset {
+  bytes hash = 1; // should be sha3.Sum256, 32 byte length.
+  bytes userKey = 2;
+  string filename = 3;
+}
+
+message Algorithm {
+  bytes hash = 1; // should be sha3.Sum256, 32 byte length.
+  bytes userKey = 2;
+}
+
+message AgentConfig {
+  string port = 1;
+  string host = 2;
+  string cert_file = 3;
+  string key_file = 4;
+  string client_ca_file = 5;
+  string server_ca_file = 6;
+  string log_level = 7;
+  bool   attested_tls = 8;
+}

agent/cvms/cvms_grpc.pb.go

@@ -0,0 +1,118 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.29.0
+// source: agent/cvms/cvms.proto
+
+package cvms
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+const (
+	Service_Process_FullMethodName = "/cvms.Service/Process"
+)
+
+// ServiceClient is the client API for Service service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type ServiceClient interface {
+	Process(ctx context.Context, opts ...grpc.CallOption) (grpc.BidiStreamingClient[ClientStreamMessage, ServerStreamMessage], error)
+}
+
+type serviceClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewServiceClient(cc grpc.ClientConnInterface) ServiceClient {
+	return &serviceClient{cc}
+}
+
+func (c *serviceClient) Process(ctx context.Context, opts ...grpc.CallOption) (grpc.BidiStreamingClient[ClientStreamMessage, ServerStreamMessage], error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	stream, err := c.cc.NewStream(ctx, &Service_ServiceDesc.Streams[0], Service_Process_FullMethodName, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &grpc.GenericClientStream[ClientStreamMessage, ServerStreamMessage]{ClientStream: stream}
+	return x, nil
+}
+
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type Service_ProcessClient = grpc.BidiStreamingClient[ClientStreamMessage, ServerStreamMessage]
+
+// ServiceServer is the server API for Service service.
+// All implementations must embed UnimplementedServiceServer
+// for forward compatibility.
+type ServiceServer interface {
+	Process(grpc.BidiStreamingServer[ClientStreamMessage, ServerStreamMessage]) error
+	mustEmbedUnimplementedServiceServer()
+}
+
+// UnimplementedServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedServiceServer struct{}
+
+func (UnimplementedServiceServer) Process(grpc.BidiStreamingServer[ClientStreamMessage, ServerStreamMessage]) error {
+	return status.Errorf(codes.Unimplemented, "method Process not implemented")
+}
+func (UnimplementedServiceServer) mustEmbedUnimplementedServiceServer() {}
+func (UnimplementedServiceServer) testEmbeddedByValue()                 {}
+
+// UnsafeServiceServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to ServiceServer will
+// result in compilation errors.
+type UnsafeServiceServer interface {
+	mustEmbedUnimplementedServiceServer()
+}
+
+func RegisterServiceServer(s grpc.ServiceRegistrar, srv ServiceServer) {
+	// If the following call pancis, it indicates UnimplementedServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
+	s.RegisterService(&Service_ServiceDesc, srv)
+}
+
+func _Service_Process_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(ServiceServer).Process(&grpc.GenericServerStream[ClientStreamMessage, ServerStreamMessage]{ServerStream: stream})
+}
+
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type Service_ProcessServer = grpc.BidiStreamingServer[ClientStreamMessage, ServerStreamMessage]
+
+// Service_ServiceDesc is the grpc.ServiceDesc for Service service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var Service_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "cvms.Service",
+	HandlerType: (*ServiceServer)(nil),
+	Methods:     []grpc.MethodDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Process",
+			Handler:       _Service_Process_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
+	Metadata: "agent/cvms/cvms.proto",
+}

agent/cvms/server/cvm.go

@@ -0,0 +1,96 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+package server
+
+import (
+	context "context"
+	"fmt"
+	"log/slog"
+
+	"github.com/ultravioletrs/cocos/agent"
+	agentgrpc "github.com/ultravioletrs/cocos/agent/api/grpc"
+	"github.com/ultravioletrs/cocos/agent/auth"
+	"github.com/ultravioletrs/cocos/internal/server"
+	grpcserver "github.com/ultravioletrs/cocos/internal/server/grpc"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
+)
+
+const (
+	svcName        = "agent"
+	defSvcGRPCPort = "7002"
+)
+
+type AgentServer interface {
+	Start(cfg agent.AgentConfig, cmp agent.Computation) error
+	Stop() error
+}
+
+type agentServer struct {
+	gs     server.Server
+	logger *slog.Logger
+	svc    agent.Service
+}
+
+func NewServer(logger *slog.Logger, svc agent.Service) AgentServer {
+	return &agentServer{
+		logger: logger,
+		svc:    svc,
+	}
+}
+
+func (as *agentServer) Start(cfg agent.AgentConfig, cmp agent.Computation) error {
+	if cfg.Port == "" {
+		cfg.Port = defSvcGRPCPort
+	}
+
+	agentGrpcServerConfig := server.AgentConfig{
+		ServerConfig: server.ServerConfig{
+			BaseConfig: server.BaseConfig{
+				Host:         cfg.Host,
+				Port:         cfg.Port,
+				CertFile:     cfg.CertFile,
+				KeyFile:      cfg.KeyFile,
+				ServerCAFile: cfg.ServerCAFile,
+				ClientCAFile: cfg.ClientCAFile,
+			},
+		},
+		AttestedTLS: cfg.AttestedTls,
+	}
+
+	registerAgentServiceServer := func(srv *grpc.Server) {
+		reflection.Register(srv)
+		agent.RegisterAgentServiceServer(srv, agentgrpc.NewServer(as.svc))
+	}
+
+	authSvc, err := auth.New(cmp)
+	if err != nil {
+		as.logger.WithGroup(cmp.ID).Error(fmt.Sprintf("failed to create auth service %s", err.Error()))
+		return err
+	}
+
+	qp, err := quoteprovider.GetLeveledQuoteProvider()
+	if err != nil {
+		as.logger.Error(fmt.Sprintf("failed to create quote provider %s", err.Error()))
+		return err
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+
+	as.gs = grpcserver.New(ctx, cancel, svcName, agentGrpcServerConfig, registerAgentServiceServer, as.logger, qp, authSvc)
+
+	go func() {
+		err := as.gs.Start()
+		if err != nil {
+			as.logger.Error(fmt.Sprintf("failed to start grpc server %s", err.Error()))
+		}
+	}()
+
+	return nil
+}
+
+func (as *agentServer) Stop() error {
+	return as.gs.Stop()
+}

agent/cvms/server/mocks/server.go

@@ -0,0 +1,130 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+// Code generated by mockery v2.43.2. DO NOT EDIT.
+
+package mocks
+
+import (
+	mock "github.com/stretchr/testify/mock"
+	agent "github.com/ultravioletrs/cocos/agent"
+)
+
+// AgentServer is an autogenerated mock type for the AgentServer type
+type AgentServer struct {
+	mock.Mock
+}
+
+type AgentServer_Expecter struct {
+	mock *mock.Mock
+}
+
+func (_m *AgentServer) EXPECT() *AgentServer_Expecter {
+	return &AgentServer_Expecter{mock: &_m.Mock}
+}
+
+// Start provides a mock function with given fields: cfg, cmp
+func (_m *AgentServer) Start(cfg agent.AgentConfig, cmp agent.Computation) error {
+	ret := _m.Called(cfg, cmp)
+
+	if len(ret) == 0 {
+		panic("no return value specified for Start")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(agent.AgentConfig, agent.Computation) error); ok {
+		r0 = rf(cfg, cmp)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// AgentServer_Start_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Start'
+type AgentServer_Start_Call struct {
+	*mock.Call
+}
+
+// Start is a helper method to define mock.On call
+//   - cfg agent.AgentConfig
+//   - cmp agent.Computation
+func (_e *AgentServer_Expecter) Start(cfg interface{}, cmp interface{}) *AgentServer_Start_Call {
+	return &AgentServer_Start_Call{Call: _e.mock.On("Start", cfg, cmp)}
+}
+
+func (_c *AgentServer_Start_Call) Run(run func(cfg agent.AgentConfig, cmp agent.Computation)) *AgentServer_Start_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(agent.AgentConfig), args[1].(agent.Computation))
+	})
+	return _c
+}
+
+func (_c *AgentServer_Start_Call) Return(_a0 error) *AgentServer_Start_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *AgentServer_Start_Call) RunAndReturn(run func(agent.AgentConfig, agent.Computation) error) *AgentServer_Start_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// Stop provides a mock function with given fields:
+func (_m *AgentServer) Stop() error {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Stop")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// AgentServer_Stop_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Stop'
+type AgentServer_Stop_Call struct {
+	*mock.Call
+}
+
+// Stop is a helper method to define mock.On call
+func (_e *AgentServer_Expecter) Stop() *AgentServer_Stop_Call {
+	return &AgentServer_Stop_Call{Call: _e.mock.On("Stop")}
+}
+
+func (_c *AgentServer_Stop_Call) Run(run func()) *AgentServer_Stop_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run()
+	})
+	return _c
+}
+
+func (_c *AgentServer_Stop_Call) Return(_a0 error) *AgentServer_Stop_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *AgentServer_Stop_Call) RunAndReturn(run func() error) *AgentServer_Stop_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// NewAgentServer creates a new instance of AgentServer. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewAgentServer(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *AgentServer {
+	mock := &AgentServer{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

agent/events/events.go

@@ -4,66 +4,38 @@ package events
 
 import (
 	"encoding/json"
-	"time"
 
-	"github.com/mdlayher/vsock"
-	"github.com/ultravioletrs/cocos/pkg/manager"
-	"google.golang.org/protobuf/proto"
+	"github.com/ultravioletrs/cocos/agent/cvms"
 	"google.golang.org/protobuf/types/known/timestamppb"
 )
 
 type service struct {
-	service       string
-	computationID string
-	conn          *vsock.Conn
+	service string
+	queue   chan *cvms.ClientStreamMessage
 }
 
-type AgentEvent struct {
-	EventType     string          `json:"event_type"`
-	Timestamp     time.Time       `json:"timestamp"`
-	ComputationID string          `json:"computation_id,omitempty"`
-	Details       json.RawMessage `json:"details,omitempty"`
-	Originator    string          `json:"originator"`
-	Status        string          `json:"status,omitempty"`
-}
-
-//go:generate mockery --name Service --output=./mocks --filename events.go --quiet --note "Copyright (c) Ultraviolet \n // SPDX-License-Identifier: Apache-2.0"
 type Service interface {
-	SendEvent(event, status string, details json.RawMessage) error
-	Close() error
+	SendEvent(cmpID, event, status string, details json.RawMessage)
 }
 
-func New(svc, computationID string, sockPort uint32) (Service, error) {
-	conn, err := vsock.Dial(vsock.Host, sockPort, nil)
-	if err != nil {
-		return nil, err
-	}
+func New(svc string, queue chan *cvms.ClientStreamMessage) (Service, error) {
 	return &service{
-		service:       svc,
-		computationID: computationID,
-		conn:          conn,
+		service: svc,
+		queue:   queue,
 	}, nil
 }
 
-func (s *service) SendEvent(event, status string, details json.RawMessage) error {
-	body := manager.ClientStreamMessage{Message: &manager.ClientStreamMessage_AgentEvent{AgentEvent: &manager.AgentEvent{
-		EventType:     event,
-		Timestamp:     timestamppb.Now(),
-		ComputationId: s.computationID,
-		Originator:    s.service,
-		Status:        status,
-		Details:       details,
-	}}}
-	protoBody, err := proto.Marshal(&body)
-	if err != nil {
-		return err
+func (s *service) SendEvent(cmpID, event, status string, details json.RawMessage) {
+	s.queue <- &cvms.ClientStreamMessage{
+		Message: &cvms.ClientStreamMessage_AgentEvent{
+			AgentEvent: &cvms.AgentEvent{
+				EventType:     event,
+				Timestamp:     timestamppb.Now(),
+				ComputationId: cmpID,
+				Originator:    s.service,
+				Status:        status,
+				Details:       details,
+			},
+		},
 	}
-	if _, err := s.conn.Write(protoBody); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (s *service) Close() error {
-	return s.conn.Close()
 }

agent/events/events.pb.go

@@ -0,0 +1,362 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.0
+// 	protoc        v5.29.0
+// source: agent/events/events.proto
+
+package events
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type AgentEvent struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	EventType     string                 `protobuf:"bytes,1,opt,name=event_type,json=eventType,proto3" json:"event_type,omitempty"`
+	Timestamp     *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	ComputationId string                 `protobuf:"bytes,3,opt,name=computation_id,json=computationId,proto3" json:"computation_id,omitempty"`
+	Details       []byte                 `protobuf:"bytes,4,opt,name=details,proto3" json:"details,omitempty"`
+	Originator    string                 `protobuf:"bytes,5,opt,name=originator,proto3" json:"originator,omitempty"`
+	Status        string                 `protobuf:"bytes,6,opt,name=status,proto3" json:"status,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *AgentEvent) Reset() {
+	*x = AgentEvent{}
+	mi := &file_agent_events_events_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *AgentEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AgentEvent) ProtoMessage() {}
+
+func (x *AgentEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_agent_events_events_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AgentEvent.ProtoReflect.Descriptor instead.
+func (*AgentEvent) Descriptor() ([]byte, []int) {
+	return file_agent_events_events_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *AgentEvent) GetEventType() string {
+	if x != nil {
+		return x.EventType
+	}
+	return ""
+}
+
+func (x *AgentEvent) GetTimestamp() *timestamppb.Timestamp {
+	if x != nil {
+		return x.Timestamp
+	}
+	return nil
+}
+
+func (x *AgentEvent) GetComputationId() string {
+	if x != nil {
+		return x.ComputationId
+	}
+	return ""
+}
+
+func (x *AgentEvent) GetDetails() []byte {
+	if x != nil {
+		return x.Details
+	}
+	return nil
+}
+
+func (x *AgentEvent) GetOriginator() string {
+	if x != nil {
+		return x.Originator
+	}
+	return ""
+}
+
+func (x *AgentEvent) GetStatus() string {
+	if x != nil {
+		return x.Status
+	}
+	return ""
+}
+
+type AgentLog struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Message       string                 `protobuf:"bytes,1,opt,name=message,proto3" json:"message,omitempty"`
+	ComputationId string                 `protobuf:"bytes,2,opt,name=computation_id,json=computationId,proto3" json:"computation_id,omitempty"`
+	Level         string                 `protobuf:"bytes,3,opt,name=level,proto3" json:"level,omitempty"`
+	Timestamp     *timestamppb.Timestamp `protobuf:"bytes,4,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *AgentLog) Reset() {
+	*x = AgentLog{}
+	mi := &file_agent_events_events_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *AgentLog) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AgentLog) ProtoMessage() {}
+
+func (x *AgentLog) ProtoReflect() protoreflect.Message {
+	mi := &file_agent_events_events_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AgentLog.ProtoReflect.Descriptor instead.
+func (*AgentLog) Descriptor() ([]byte, []int) {
+	return file_agent_events_events_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *AgentLog) GetMessage() string {
+	if x != nil {
+		return x.Message
+	}
+	return ""
+}
+
+func (x *AgentLog) GetComputationId() string {
+	if x != nil {
+		return x.ComputationId
+	}
+	return ""
+}
+
+func (x *AgentLog) GetLevel() string {
+	if x != nil {
+		return x.Level
+	}
+	return ""
+}
+
+func (x *AgentLog) GetTimestamp() *timestamppb.Timestamp {
+	if x != nil {
+		return x.Timestamp
+	}
+	return nil
+}
+
+type EventsLogs struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	// Types that are valid to be assigned to Message:
+	//
+	//	*EventsLogs_AgentLog
+	//	*EventsLogs_AgentEvent
+	Message       isEventsLogs_Message `protobuf_oneof:"message"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *EventsLogs) Reset() {
+	*x = EventsLogs{}
+	mi := &file_agent_events_events_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *EventsLogs) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*EventsLogs) ProtoMessage() {}
+
+func (x *EventsLogs) ProtoReflect() protoreflect.Message {
+	mi := &file_agent_events_events_proto_msgTypes[2]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use EventsLogs.ProtoReflect.Descriptor instead.
+func (*EventsLogs) Descriptor() ([]byte, []int) {
+	return file_agent_events_events_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *EventsLogs) GetMessage() isEventsLogs_Message {
+	if x != nil {
+		return x.Message
+	}
+	return nil
+}
+
+func (x *EventsLogs) GetAgentLog() *AgentLog {
+	if x != nil {
+		if x, ok := x.Message.(*EventsLogs_AgentLog); ok {
+			return x.AgentLog
+		}
+	}
+	return nil
+}
+
+func (x *EventsLogs) GetAgentEvent() *AgentEvent {
+	if x != nil {
+		if x, ok := x.Message.(*EventsLogs_AgentEvent); ok {
+			return x.AgentEvent
+		}
+	}
+	return nil
+}
+
+type isEventsLogs_Message interface {
+	isEventsLogs_Message()
+}
+
+type EventsLogs_AgentLog struct {
+	AgentLog *AgentLog `protobuf:"bytes,1,opt,name=agent_log,json=agentLog,proto3,oneof"`
+}
+
+type EventsLogs_AgentEvent struct {
+	AgentEvent *AgentEvent `protobuf:"bytes,2,opt,name=agent_event,json=agentEvent,proto3,oneof"`
+}
+
+func (*EventsLogs_AgentLog) isEventsLogs_Message() {}
+
+func (*EventsLogs_AgentEvent) isEventsLogs_Message() {}
+
+var File_agent_events_events_proto protoreflect.FileDescriptor
+
+var file_agent_events_events_proto_rawDesc = []byte{
+	0x0a, 0x19, 0x61, 0x67, 0x65, 0x6e, 0x74, 0x2f, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x73, 0x2f, 0x65,
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+	0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x54, 0x79,
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+	0x65, 0x6e, 0x74, 0x4c, 0x6f, 0x67, 0x48, 0x00, 0x52, 0x08, 0x61, 0x67, 0x65, 0x6e, 0x74, 0x4c,
+	0x6f, 0x67, 0x12, 0x35, 0x0a, 0x0b, 0x61, 0x67, 0x65, 0x6e, 0x74, 0x5f, 0x65, 0x76, 0x65, 0x6e,
+	0x74, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x12, 0x2e, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x73,
+	0x2e, 0x41, 0x67, 0x65, 0x6e, 0x74, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x48, 0x00, 0x52, 0x0a, 0x61,
+	0x67, 0x65, 0x6e, 0x74, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x42, 0x09, 0x0a, 0x07, 0x6d, 0x65, 0x73,
+	0x73, 0x61, 0x67, 0x65, 0x42, 0x0a, 0x5a, 0x08, 0x2e, 0x2f, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x73,
+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_agent_events_events_proto_rawDescOnce sync.Once
+	file_agent_events_events_proto_rawDescData = file_agent_events_events_proto_rawDesc
+)
+
+func file_agent_events_events_proto_rawDescGZIP() []byte {
+	file_agent_events_events_proto_rawDescOnce.Do(func() {
+		file_agent_events_events_proto_rawDescData = protoimpl.X.CompressGZIP(file_agent_events_events_proto_rawDescData)
+	})
+	return file_agent_events_events_proto_rawDescData
+}
+
+var file_agent_events_events_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_agent_events_events_proto_goTypes = []any{
+	(*AgentEvent)(nil),            // 0: events.AgentEvent
+	(*AgentLog)(nil),              // 1: events.AgentLog
+	(*EventsLogs)(nil),            // 2: events.EventsLogs
+	(*timestamppb.Timestamp)(nil), // 3: google.protobuf.Timestamp
+}
+var file_agent_events_events_proto_depIdxs = []int32{
+	3, // 0: events.AgentEvent.timestamp:type_name -> google.protobuf.Timestamp
+	3, // 1: events.AgentLog.timestamp:type_name -> google.protobuf.Timestamp
+	1, // 2: events.EventsLogs.agent_log:type_name -> events.AgentLog
+	0, // 3: events.EventsLogs.agent_event:type_name -> events.AgentEvent
+	4, // [4:4] is the sub-list for method output_type
+	4, // [4:4] is the sub-list for method input_type
+	4, // [4:4] is the sub-list for extension type_name
+	4, // [4:4] is the sub-list for extension extendee
+	0, // [0:4] is the sub-list for field type_name
+}
+
+func init() { file_agent_events_events_proto_init() }
+func file_agent_events_events_proto_init() {
+	if File_agent_events_events_proto != nil {
+		return
+	}
+	file_agent_events_events_proto_msgTypes[2].OneofWrappers = []any{
+		(*EventsLogs_AgentLog)(nil),
+		(*EventsLogs_AgentEvent)(nil),
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_agent_events_events_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   3,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_agent_events_events_proto_goTypes,
+		DependencyIndexes: file_agent_events_events_proto_depIdxs,
+		MessageInfos:      file_agent_events_events_proto_msgTypes,
+	}.Build()
+	File_agent_events_events_proto = out.File
+	file_agent_events_events_proto_rawDesc = nil
+	file_agent_events_events_proto_goTypes = nil
+	file_agent_events_events_proto_depIdxs = nil
+}

agent/events/events.proto

@@ -0,0 +1,33 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+syntax = "proto3";
+
+package events;
+
+import "google/protobuf/timestamp.proto";
+
+option go_package = "./events";
+
+message AgentEvent {
+  string event_type = 1;
+	google.protobuf.Timestamp timestamp = 2;
+	string	computation_id = 3;
+	bytes	details = 4;
+	string	originator = 5;
+	string	status = 6;
+}
+
+message AgentLog {
+  string message = 1;
+  string computation_id = 2;
+  string level = 3;
+  google.protobuf.Timestamp timestamp = 4;
+}
+
+message EventsLogs {
+  oneof message {
+    AgentLog agent_log = 1;
+    AgentEvent agent_event = 2;
+  }
+}

agent/events/events_test.go

@@ -0,0 +1,38 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package events
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/ultravioletrs/cocos/agent/cvms"
+)
+
+func TestSendEventSuccess(t *testing.T) {
+	queue := make(chan *cvms.ClientStreamMessage, 1)
+	svc, err := New("test_service", queue)
+	assert.NoError(t, err)
+
+	details := json.RawMessage(`{"key": "value"}`)
+
+	go func() {
+		msg := <-queue
+		assert.NotNil(t, msg)
+		assert.NotNil(t, msg.GetAgentEvent())
+		assert.Equal(t, "test_event", msg.GetAgentEvent().EventType)
+		assert.Equal(t, "testid", msg.GetAgentEvent().ComputationId)
+		assert.Equal(t, "test_service", msg.GetAgentEvent().Originator)
+		assert.Equal(t, "success", msg.GetAgentEvent().Status)
+
+		now := time.Now()
+		eventTimestamp := msg.GetAgentEvent().GetTimestamp().AsTime()
+		assert.WithinDuration(t, now, eventTimestamp, 1*time.Second)
+	}()
+
+	svc.SendEvent("testid", "test_event", "success", details)
+
+	time.Sleep(1 * time.Second)
+}

agent/events/mocks/events.go

@@ -1,8 +1,8 @@
-// Code generated by mockery v2.43.2. DO NOT EDIT.
-
 // Copyright (c) Ultraviolet
 // SPDX-License-Identifier: Apache-2.0
 
+// Code generated by mockery v2.43.2. DO NOT EDIT.
+
 package mocks
 
 import (
@@ -16,40 +16,48 @@ type Service struct {
 	mock.Mock
 }
 
-// Close provides a mock function with given fields:
-func (_m *Service) Close() error {
-	ret := _m.Called()
-
-	if len(ret) == 0 {
-		panic("no return value specified for Close")
-	}
-
-	var r0 error
-	if rf, ok := ret.Get(0).(func() error); ok {
-		r0 = rf()
-	} else {
-		r0 = ret.Error(0)
-	}
-
-	return r0
+type Service_Expecter struct {
+	mock *mock.Mock
 }
 
-// SendEvent provides a mock function with given fields: event, status, details
-func (_m *Service) SendEvent(event string, status string, details json.RawMessage) error {
-	ret := _m.Called(event, status, details)
+func (_m *Service) EXPECT() *Service_Expecter {
+	return &Service_Expecter{mock: &_m.Mock}
+}
 
-	if len(ret) == 0 {
-		panic("no return value specified for SendEvent")
-	}
+// SendEvent provides a mock function with given fields: cmpID, event, status, details
+func (_m *Service) SendEvent(cmpID string, event string, status string, details json.RawMessage) {
+	_m.Called(cmpID, event, status, details)
+}
 
-	var r0 error
-	if rf, ok := ret.Get(0).(func(string, string, json.RawMessage) error); ok {
-		r0 = rf(event, status, details)
-	} else {
-		r0 = ret.Error(0)
-	}
+// Service_SendEvent_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'SendEvent'
+type Service_SendEvent_Call struct {
+	*mock.Call
+}
 
-	return r0
+// SendEvent is a helper method to define mock.On call
+//   - cmpID string
+//   - event string
+//   - status string
+//   - details json.RawMessage
+func (_e *Service_Expecter) SendEvent(cmpID interface{}, event interface{}, status interface{}, details interface{}) *Service_SendEvent_Call {
+	return &Service_SendEvent_Call{Call: _e.mock.On("SendEvent", cmpID, event, status, details)}
+}
+
+func (_c *Service_SendEvent_Call) Run(run func(cmpID string, event string, status string, details json.RawMessage)) *Service_SendEvent_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(string), args[1].(string), args[2].(string), args[3].(json.RawMessage))
+	})
+	return _c
+}
+
+func (_c *Service_SendEvent_Call) Return() *Service_SendEvent_Call {
+	_c.Call.Return()
+	return _c
+}
+
+func (_c *Service_SendEvent_Call) RunAndReturn(run func(string, string, string, json.RawMessage)) *Service_SendEvent_Call {
+	_c.Call.Return(run)
+	return _c
 }
 
 // NewService creates a new instance of Service. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.

agent/mocks/agent.go

@@ -1,14 +1,15 @@
-// Code generated by mockery v2.43.2. DO NOT EDIT.
-
 // Copyright (c) Ultraviolet
 // SPDX-License-Identifier: Apache-2.0
 
+// Code generated by mockery v2.43.2. DO NOT EDIT.
+
 package mocks
 
 import (
-	context "context"
-
 	agent "github.com/ultravioletrs/cocos/agent"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+
+	context "context"
 
 	mock "github.com/stretchr/testify/mock"
 )
@@ -18,6 +19,14 @@ type Service struct {
 	mock.Mock
 }
 
+type Service_Expecter struct {
+	mock *mock.Mock
+}
+
+func (_m *Service) EXPECT() *Service_Expecter {
+	return &Service_Expecter{mock: &_m.Mock}
+}
+
 // Algo provides a mock function with given fields: ctx, algorithm
 func (_m *Service) Algo(ctx context.Context, algorithm agent.Algorithm) error {
 	ret := _m.Called(ctx, algorithm)
@@ -36,9 +45,38 @@ func (_m *Service) Algo(ctx context.Context, algorithm agent.Algorithm) error {
 	return r0
 }
 
-// Attestation provides a mock function with given fields: ctx, reportData
-func (_m *Service) Attestation(ctx context.Context, reportData [64]byte) ([]byte, error) {
-	ret := _m.Called(ctx, reportData)
+// Service_Algo_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Algo'
+type Service_Algo_Call struct {
+	*mock.Call
+}
+
+// Algo is a helper method to define mock.On call
+//   - ctx context.Context
+//   - algorithm agent.Algorithm
+func (_e *Service_Expecter) Algo(ctx interface{}, algorithm interface{}) *Service_Algo_Call {
+	return &Service_Algo_Call{Call: _e.mock.On("Algo", ctx, algorithm)}
+}
+
+func (_c *Service_Algo_Call) Run(run func(ctx context.Context, algorithm agent.Algorithm)) *Service_Algo_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(context.Context), args[1].(agent.Algorithm))
+	})
+	return _c
+}
+
+func (_c *Service_Algo_Call) Return(_a0 error) *Service_Algo_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *Service_Algo_Call) RunAndReturn(run func(context.Context, agent.Algorithm) error) *Service_Algo_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// Attestation provides a mock function with given fields: ctx, reportData, nonce, attType
+func (_m *Service) Attestation(ctx context.Context, reportData [64]byte, nonce [32]byte, attType config.AttestationType) ([]byte, error) {
+	ret := _m.Called(ctx, reportData, nonce, attType)
 
 	if len(ret) == 0 {
 		panic("no return value specified for Attestation")
@@ -46,19 +84,19 @@ func (_m *Service) Attestation(ctx context.Context, reportData [64]byte) ([]byte
 
 	var r0 []byte
 	var r1 error
-	if rf, ok := ret.Get(0).(func(context.Context, [64]byte) ([]byte, error)); ok {
-		return rf(ctx, reportData)
+	if rf, ok := ret.Get(0).(func(context.Context, [64]byte, [32]byte, config.AttestationType) ([]byte, error)); ok {
+		return rf(ctx, reportData, nonce, attType)
 	}
-	if rf, ok := ret.Get(0).(func(context.Context, [64]byte) []byte); ok {
-		r0 = rf(ctx, reportData)
+	if rf, ok := ret.Get(0).(func(context.Context, [64]byte, [32]byte, config.AttestationType) []byte); ok {
+		r0 = rf(ctx, reportData, nonce, attType)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).([]byte)
 		}
 	}
 
-	if rf, ok := ret.Get(1).(func(context.Context, [64]byte) error); ok {
-		r1 = rf(ctx, reportData)
+	if rf, ok := ret.Get(1).(func(context.Context, [64]byte, [32]byte, config.AttestationType) error); ok {
+		r1 = rf(ctx, reportData, nonce, attType)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -66,6 +104,37 @@ func (_m *Service) Attestation(ctx context.Context, reportData [64]byte) ([]byte
 	return r0, r1
 }
 
+// Service_Attestation_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Attestation'
+type Service_Attestation_Call struct {
+	*mock.Call
+}
+
+// Attestation is a helper method to define mock.On call
+//   - ctx context.Context
+//   - reportData [64]byte
+//   - nonce [32]byte
+//   - attType config.AttestationType
+func (_e *Service_Expecter) Attestation(ctx interface{}, reportData interface{}, nonce interface{}, attType interface{}) *Service_Attestation_Call {
+	return &Service_Attestation_Call{Call: _e.mock.On("Attestation", ctx, reportData, nonce, attType)}
+}
+
+func (_c *Service_Attestation_Call) Run(run func(ctx context.Context, reportData [64]byte, nonce [32]byte, attType config.AttestationType)) *Service_Attestation_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(context.Context), args[1].([64]byte), args[2].([32]byte), args[3].(config.AttestationType))
+	})
+	return _c
+}
+
+func (_c *Service_Attestation_Call) Return(_a0 []byte, _a1 error) *Service_Attestation_Call {
+	_c.Call.Return(_a0, _a1)
+	return _c
+}
+
+func (_c *Service_Attestation_Call) RunAndReturn(run func(context.Context, [64]byte, [32]byte, config.AttestationType) ([]byte, error)) *Service_Attestation_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
 // Data provides a mock function with given fields: ctx, dataset
 func (_m *Service) Data(ctx context.Context, dataset agent.Dataset) error {
 	ret := _m.Called(ctx, dataset)
@@ -84,6 +153,82 @@ func (_m *Service) Data(ctx context.Context, dataset agent.Dataset) error {
 	return r0
 }
 
+// Service_Data_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Data'
+type Service_Data_Call struct {
+	*mock.Call
+}
+
+// Data is a helper method to define mock.On call
+//   - ctx context.Context
+//   - dataset agent.Dataset
+func (_e *Service_Expecter) Data(ctx interface{}, dataset interface{}) *Service_Data_Call {
+	return &Service_Data_Call{Call: _e.mock.On("Data", ctx, dataset)}
+}
+
+func (_c *Service_Data_Call) Run(run func(ctx context.Context, dataset agent.Dataset)) *Service_Data_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(context.Context), args[1].(agent.Dataset))
+	})
+	return _c
+}
+
+func (_c *Service_Data_Call) Return(_a0 error) *Service_Data_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *Service_Data_Call) RunAndReturn(run func(context.Context, agent.Dataset) error) *Service_Data_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// InitComputation provides a mock function with given fields: ctx, cmp
+func (_m *Service) InitComputation(ctx context.Context, cmp agent.Computation) error {
+	ret := _m.Called(ctx, cmp)
+
+	if len(ret) == 0 {
+		panic("no return value specified for InitComputation")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context, agent.Computation) error); ok {
+		r0 = rf(ctx, cmp)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Service_InitComputation_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'InitComputation'
+type Service_InitComputation_Call struct {
+	*mock.Call
+}
+
+// InitComputation is a helper method to define mock.On call
+//   - ctx context.Context
+//   - cmp agent.Computation
+func (_e *Service_Expecter) InitComputation(ctx interface{}, cmp interface{}) *Service_InitComputation_Call {
+	return &Service_InitComputation_Call{Call: _e.mock.On("InitComputation", ctx, cmp)}
+}
+
+func (_c *Service_InitComputation_Call) Run(run func(ctx context.Context, cmp agent.Computation)) *Service_InitComputation_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(context.Context), args[1].(agent.Computation))
+	})
+	return _c
+}
+
+func (_c *Service_InitComputation_Call) Return(_a0 error) *Service_InitComputation_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *Service_InitComputation_Call) RunAndReturn(run func(context.Context, agent.Computation) error) *Service_InitComputation_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
 // Result provides a mock function with given fields: ctx
 func (_m *Service) Result(ctx context.Context) ([]byte, error) {
 	ret := _m.Called(ctx)
@@ -114,6 +259,125 @@ func (_m *Service) Result(ctx context.Context) ([]byte, error) {
 	return r0, r1
 }
 
+// Service_Result_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Result'
+type Service_Result_Call struct {
+	*mock.Call
+}
+
+// Result is a helper method to define mock.On call
+//   - ctx context.Context
+func (_e *Service_Expecter) Result(ctx interface{}) *Service_Result_Call {
+	return &Service_Result_Call{Call: _e.mock.On("Result", ctx)}
+}
+
+func (_c *Service_Result_Call) Run(run func(ctx context.Context)) *Service_Result_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(context.Context))
+	})
+	return _c
+}
+
+func (_c *Service_Result_Call) Return(_a0 []byte, _a1 error) *Service_Result_Call {
+	_c.Call.Return(_a0, _a1)
+	return _c
+}
+
+func (_c *Service_Result_Call) RunAndReturn(run func(context.Context) ([]byte, error)) *Service_Result_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// State provides a mock function with given fields:
+func (_m *Service) State() string {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for State")
+	}
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func() string); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(string)
+	}
+
+	return r0
+}
+
+// Service_State_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'State'
+type Service_State_Call struct {
+	*mock.Call
+}
+
+// State is a helper method to define mock.On call
+func (_e *Service_Expecter) State() *Service_State_Call {
+	return &Service_State_Call{Call: _e.mock.On("State")}
+}
+
+func (_c *Service_State_Call) Run(run func()) *Service_State_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run()
+	})
+	return _c
+}
+
+func (_c *Service_State_Call) Return(_a0 string) *Service_State_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *Service_State_Call) RunAndReturn(run func() string) *Service_State_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// StopComputation provides a mock function with given fields: ctx
+func (_m *Service) StopComputation(ctx context.Context) error {
+	ret := _m.Called(ctx)
+
+	if len(ret) == 0 {
+		panic("no return value specified for StopComputation")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context) error); ok {
+		r0 = rf(ctx)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Service_StopComputation_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'StopComputation'
+type Service_StopComputation_Call struct {
+	*mock.Call
+}
+
+// StopComputation is a helper method to define mock.On call
+//   - ctx context.Context
+func (_e *Service_Expecter) StopComputation(ctx interface{}) *Service_StopComputation_Call {
+	return &Service_StopComputation_Call{Call: _e.mock.On("StopComputation", ctx)}
+}
+
+func (_c *Service_StopComputation_Call) Run(run func(ctx context.Context)) *Service_StopComputation_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(context.Context))
+	})
+	return _c
+}
+
+func (_c *Service_StopComputation_Call) Return(_a0 error) *Service_StopComputation_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *Service_StopComputation_Call) RunAndReturn(run func(context.Context) error) *Service_StopComputation_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
 // NewService creates a new instance of Service. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
 // The first argument is typically a *testing.T value.
 func NewService(t interface {

agent/mocks/agent_grpc_algo.go

@@ -0,0 +1,207 @@
+// Code generated by mockery v2.43.2. DO NOT EDIT.
+
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+package mocks
+
+import (
+	context "context"
+
+	agent "github.com/ultravioletrs/cocos/agent"
+
+	metadata "google.golang.org/grpc/metadata"
+
+	mock "github.com/stretchr/testify/mock"
+)
+
+// AgentService_AlgoClient is an autogenerated mock type for the AgentService_AlgoClient type
+type AgentService_AlgoClient struct {
+	mock.Mock
+}
+
+// CloseAndRecv provides a mock function with given fields:
+func (_m *AgentService_AlgoClient) CloseAndRecv() (*agent.AlgoResponse, error) {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for CloseAndRecv")
+	}
+
+	var r0 *agent.AlgoResponse
+	var r1 error
+	if rf, ok := ret.Get(0).(func() (*agent.AlgoResponse, error)); ok {
+		return rf()
+	}
+	if rf, ok := ret.Get(0).(func() *agent.AlgoResponse); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*agent.AlgoResponse)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func() error); ok {
+		r1 = rf()
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// CloseSend provides a mock function with given fields:
+func (_m *AgentService_AlgoClient) CloseSend() error {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for CloseSend")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Context provides a mock function with given fields:
+func (_m *AgentService_AlgoClient) Context() context.Context {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Context")
+	}
+
+	var r0 context.Context
+	if rf, ok := ret.Get(0).(func() context.Context); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(context.Context)
+		}
+	}
+
+	return r0
+}
+
+// Header provides a mock function with given fields:
+func (_m *AgentService_AlgoClient) Header() (metadata.MD, error) {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Header")
+	}
+
+	var r0 metadata.MD
+	var r1 error
+	if rf, ok := ret.Get(0).(func() (metadata.MD, error)); ok {
+		return rf()
+	}
+	if rf, ok := ret.Get(0).(func() metadata.MD); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(metadata.MD)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func() error); ok {
+		r1 = rf()
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// RecvMsg provides a mock function with given fields: m
+func (_m *AgentService_AlgoClient) RecvMsg(m interface{}) error {
+	ret := _m.Called(m)
+
+	if len(ret) == 0 {
+		panic("no return value specified for RecvMsg")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(interface{}) error); ok {
+		r0 = rf(m)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Send provides a mock function with given fields: _a0
+func (_m *AgentService_AlgoClient) Send(_a0 *agent.AlgoRequest) error {
+	ret := _m.Called(_a0)
+
+	if len(ret) == 0 {
+		panic("no return value specified for Send")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(*agent.AlgoRequest) error); ok {
+		r0 = rf(_a0)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// SendMsg provides a mock function with given fields: m
+func (_m *AgentService_AlgoClient) SendMsg(m interface{}) error {
+	ret := _m.Called(m)
+
+	if len(ret) == 0 {
+		panic("no return value specified for SendMsg")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(interface{}) error); ok {
+		r0 = rf(m)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Trailer provides a mock function with given fields:
+func (_m *AgentService_AlgoClient) Trailer() metadata.MD {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Trailer")
+	}
+
+	var r0 metadata.MD
+	if rf, ok := ret.Get(0).(func() metadata.MD); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(metadata.MD)
+		}
+	}
+
+	return r0
+}
+
+// NewAgentService_AlgoClient creates a new instance of AgentService_AlgoClient. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewAgentService_AlgoClient(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *AgentService_AlgoClient {
+	mock := &AgentService_AlgoClient{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

agent/mocks/agent_grpc_data.go

@@ -0,0 +1,207 @@
+// Code generated by mockery v2.43.2. DO NOT EDIT.
+
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+package mocks
+
+import (
+	context "context"
+
+	agent "github.com/ultravioletrs/cocos/agent"
+
+	metadata "google.golang.org/grpc/metadata"
+
+	mock "github.com/stretchr/testify/mock"
+)
+
+// AgentService_DataClient is an autogenerated mock type for the AgentService_DataClient type
+type AgentService_DataClient struct {
+	mock.Mock
+}
+
+// CloseAndRecv provides a mock function with given fields:
+func (_m *AgentService_DataClient) CloseAndRecv() (*agent.DataResponse, error) {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for CloseAndRecv")
+	}
+
+	var r0 *agent.DataResponse
+	var r1 error
+	if rf, ok := ret.Get(0).(func() (*agent.DataResponse, error)); ok {
+		return rf()
+	}
+	if rf, ok := ret.Get(0).(func() *agent.DataResponse); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*agent.DataResponse)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func() error); ok {
+		r1 = rf()
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// CloseSend provides a mock function with given fields:
+func (_m *AgentService_DataClient) CloseSend() error {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for CloseSend")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Context provides a mock function with given fields:
+func (_m *AgentService_DataClient) Context() context.Context {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Context")
+	}
+
+	var r0 context.Context
+	if rf, ok := ret.Get(0).(func() context.Context); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(context.Context)
+		}
+	}
+
+	return r0
+}
+
+// Header provides a mock function with given fields:
+func (_m *AgentService_DataClient) Header() (metadata.MD, error) {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Header")
+	}
+
+	var r0 metadata.MD
+	var r1 error
+	if rf, ok := ret.Get(0).(func() (metadata.MD, error)); ok {
+		return rf()
+	}
+	if rf, ok := ret.Get(0).(func() metadata.MD); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(metadata.MD)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func() error); ok {
+		r1 = rf()
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// RecvMsg provides a mock function with given fields: m
+func (_m *AgentService_DataClient) RecvMsg(m interface{}) error {
+	ret := _m.Called(m)
+
+	if len(ret) == 0 {
+		panic("no return value specified for RecvMsg")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(interface{}) error); ok {
+		r0 = rf(m)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Send provides a mock function with given fields: _a0
+func (_m *AgentService_DataClient) Send(_a0 *agent.DataRequest) error {
+	ret := _m.Called(_a0)
+
+	if len(ret) == 0 {
+		panic("no return value specified for Send")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(*agent.DataRequest) error); ok {
+		r0 = rf(_a0)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// SendMsg provides a mock function with given fields: m
+func (_m *AgentService_DataClient) SendMsg(m interface{}) error {
+	ret := _m.Called(m)
+
+	if len(ret) == 0 {
+		panic("no return value specified for SendMsg")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(interface{}) error); ok {
+		r0 = rf(m)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// Trailer provides a mock function with given fields:
+func (_m *AgentService_DataClient) Trailer() metadata.MD {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for Trailer")
+	}
+
+	var r0 metadata.MD
+	if rf, ok := ret.Get(0).(func() metadata.MD); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(metadata.MD)
+		}
+	}
+
+	return r0
+}
+
+// NewAgentService_DataClient creates a new instance of AgentService_DataClient. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewAgentService_DataClient(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *AgentService_DataClient {
+	mock := &AgentService_DataClient{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

agent/quoteprovider/sev.go

@@ -1,13 +0,0 @@
-// Copyright (c) Ultraviolet
-// SPDX-License-Identifier: Apache-2.0
-
-//go:build !embed
-// +build !embed
-
-package quoteprovider
-
-import "github.com/google/go-sev-guest/client"
-
-func GetQuoteProvider() (client.QuoteProvider, error) {
-	return client.GetQuoteProvider()
-}

agent/service.go

@@ -12,6 +12,7 @@ import (
 	"os"
 	"path/filepath"
 	"slices"
+	sync "sync"
 
 	"github.com/google/go-sev-guest/client"
 	"github.com/ultravioletrs/cocos/agent/algorithm"
@@ -20,15 +21,57 @@ import (
 	"github.com/ultravioletrs/cocos/agent/algorithm/python"
 	"github.com/ultravioletrs/cocos/agent/algorithm/wasm"
 	"github.com/ultravioletrs/cocos/agent/events"
+	"github.com/ultravioletrs/cocos/agent/statemachine"
 	"github.com/ultravioletrs/cocos/internal"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
 	"golang.org/x/crypto/sha3"
 )
 
 var _ Service = (*agentService)(nil)
 
+//go:generate stringer -type=AgentState
+type AgentState int
+
+const (
+	Idle AgentState = iota
+	ReceivingManifest
+	ReceivingAlgorithm
+	ReceivingData
+	Running
+	ConsumingResults
+	Complete
+	Failed
+)
+
+//go:generate stringer -type=AgentEvent
+type AgentEvent int
+
+const (
+	Start AgentEvent = iota
+	ManifestReceived
+	AlgorithmReceived
+	DataReceived
+	RunComplete
+	ResultsConsumed
+	RunFailed
+)
+
+//go:generate stringer -type=Status
+type Status uint8
+
+const (
+	IdleState Status = iota
+	InProgress
+	Ready
+	Completed
+	Terminated
+	Warning
+	Starting
+)
+
 const (
-	// ReportDataSize is the size of the report data expected by the attestation service.
-	ReportDataSize     = 64
 	algoFilePermission = 0o700
 )
 
@@ -55,60 +98,153 @@ var (
 	ErrFileNameMismatch = errors.New("malformed data, filename does not match manifest")
 	// ErrAllResultsConsumed indicates all results have been consumed.
 	ErrAllResultsConsumed = errors.New("all results have been consumed by declared consumers")
+	// ErrAttestationFailed attestation failed.
+	ErrAttestationFailed = errors.New("failed to get raw quote")
+	// ErrAttType indicates that the attestation type that is requested does not exist or is not supported.
+	ErrAttestationType = errors.New("attestation type does not exist or is not supported")
 )
 
 // Service specifies an API that must be fullfiled by the domain service
 // implementation, and all of its decorators (e.g. logging & metrics).
-//
-//go:generate mockery --name Service --output=mocks --filename agent.go --quiet --note "Copyright (c) Ultraviolet \n // SPDX-License-Identifier: Apache-2.0"
 type Service interface {
+	InitComputation(ctx context.Context, cmp Computation) error
+	StopComputation(ctx context.Context) error
 	Algo(ctx context.Context, algorithm Algorithm) error
 	Data(ctx context.Context, dataset Dataset) error
 	Result(ctx context.Context) ([]byte, error)
-	Attestation(ctx context.Context, reportData [ReportDataSize]byte) ([]byte, error)
+	Attestation(ctx context.Context, reportData [quoteprovider.Nonce]byte, nonce [vtpm.Nonce]byte, attType config.AttestationType) ([]byte, error)
+	State() string
 }
 
 type agentService struct {
-	computation   Computation          // Holds the current computation request details.
-	algorithm     algorithm.Algorithm  // Filepath to the algorithm received for the computation.
-	result        []byte               // Stores the result of the computation.
-	sm            *StateMachine        // Manages the state transitions of the agent service.
-	runError      error                // Stores any error encountered during the computation run.
-	eventSvc      events.Service       // Service for publishing events related to computation.
-	quoteProvider client.QuoteProvider // Provider for generating attestation quotes.
+	mu              sync.Mutex
+	computation     Computation                 // Holds the current computation request details.
+	algorithm       algorithm.Algorithm         // Filepath to the algorithm received for the computation.
+	result          []byte                      // Stores the result of the computation.
+	sm              statemachine.StateMachine   // Manages the state transitions of the agent service.
+	runError        error                       // Stores any error encountered during the computation run.
+	eventSvc        events.Service              // Service for publishing events related to computation.
+	quoteProvider   client.LeveledQuoteProvider // Provider for generating attestation quotes.
+	logger          *slog.Logger                // Logger for the agent service.
+	resultsConsumed bool                        // Indicates if the results have been consumed.
+	cancel          context.CancelFunc          // Cancels the computation context.
+	vmpl            int                         // VMPL at which the Agent is running.
 }
 
 var _ Service = (*agentService)(nil)
 
 // New instantiates the agent service implementation.
-func New(ctx context.Context, logger *slog.Logger, eventSvc events.Service, cmp Computation, quoteProvider client.QuoteProvider) Service {
+func New(ctx context.Context, logger *slog.Logger, eventSvc events.Service, quoteProvider client.LeveledQuoteProvider, vmlp int) Service {
+	sm := statemachine.NewStateMachine(Idle)
+	ctx, cancel := context.WithCancel(ctx)
 	svc := &agentService{
-		sm:            NewStateMachine(logger, cmp),
+		sm:            sm,
 		eventSvc:      eventSvc,
 		quoteProvider: quoteProvider,
+		logger:        logger,
+		cancel:        cancel,
+		vmpl:          vmlp,
 	}
 
-	go svc.sm.Start(ctx)
-	svc.sm.SendEvent(start)
-	svc.sm.StateFunctions[idle] = svc.publishEvent("in-progress", json.RawMessage{})
-	svc.sm.StateFunctions[receivingManifest] = svc.publishEvent("in-progress", json.RawMessage{})
-	svc.sm.StateFunctions[receivingAlgorithm] = svc.publishEvent("in-progress", json.RawMessage{})
-	svc.sm.StateFunctions[receivingData] = svc.publishEvent("in-progress", json.RawMessage{})
-	svc.sm.StateFunctions[resultsReady] = svc.publishEvent("in-progress", json.RawMessage{})
-	svc.sm.StateFunctions[complete] = svc.publishEvent("in-progress", json.RawMessage{})
-	svc.sm.StateFunctions[running] = svc.runComputation
-	svc.sm.StateFunctions[failed] = svc.publishEvent("failed", json.RawMessage{})
+	transitions := []statemachine.Transition{
+		{From: Idle, Event: Start, To: ReceivingManifest},
+		{From: ReceivingManifest, Event: ManifestReceived, To: ReceivingAlgorithm},
+	}
 
-	svc.computation = cmp
+	transitions = append(transitions, []statemachine.Transition{
+		{From: Running, Event: RunComplete, To: ConsumingResults},
+		{From: Running, Event: RunFailed, To: Failed},
+		{From: ConsumingResults, Event: ResultsConsumed, To: Complete},
+	}...)
+
+	for _, t := range transitions {
+		sm.AddTransition(t)
+	}
+
+	sm.SetAction(ReceivingAlgorithm, svc.publishEvent(InProgress.String()))
+	sm.SetAction(ReceivingData, svc.publishEvent(InProgress.String()))
+	sm.SetAction(Running, svc.runComputation)
+	sm.SetAction(ConsumingResults, svc.publishEvent(Ready.String()))
+	sm.SetAction(Complete, svc.publishEvent(Completed.String()))
+	sm.SetAction(Failed, svc.publishEvent(Failed.String()))
+
+	go func() {
+		if err := sm.Start(ctx); err != nil {
+			logger.Error(err.Error())
+		}
+	}()
+	sm.SendEvent(Start)
 
-	svc.sm.SendEvent(manifestReceived)
 	return svc
 }
 
-func (as *agentService) Algo(ctx context.Context, algo Algorithm) error {
-	if as.sm.GetState() != receivingAlgorithm {
+func (as *agentService) State() string {
+	return as.sm.GetState().String()
+}
+
+func (as *agentService) InitComputation(ctx context.Context, cmp Computation) error {
+	if as.sm.GetState() != ReceivingManifest {
 		return ErrStateNotReady
 	}
+	defer as.sm.SendEvent(ManifestReceived)
+
+	as.mu.Lock()
+	defer as.mu.Unlock()
+
+	as.computation = cmp
+
+	transitions := []statemachine.Transition{}
+
+	if len(cmp.Datasets) == 0 {
+		transitions = append(transitions, statemachine.Transition{From: ReceivingAlgorithm, Event: AlgorithmReceived, To: Running})
+	} else {
+		transitions = append(transitions, statemachine.Transition{From: ReceivingAlgorithm, Event: AlgorithmReceived, To: ReceivingData})
+		transitions = append(transitions, statemachine.Transition{From: ReceivingData, Event: DataReceived, To: Running})
+	}
+
+	for _, t := range transitions {
+		as.sm.AddTransition(t)
+	}
+
+	return nil
+}
+
+func (as *agentService) StopComputation(ctx context.Context) error {
+	as.mu.Lock()
+	defer as.mu.Unlock()
+
+	as.cancel()
+
+	if err := as.algorithm.Stop(); err != nil {
+		return fmt.Errorf("error stopping computation: %v", err)
+	}
+
+	sm := statemachine.NewStateMachine(Idle)
+
+	if err := os.RemoveAll(algorithm.DatasetsDir); err != nil {
+		return fmt.Errorf("error removing datasets directory: %v", err)
+	}
+
+	if err := os.RemoveAll(algorithm.ResultsDir); err != nil {
+		return fmt.Errorf("error removing results directory: %v", err)
+	}
+
+	as.sm = sm
+	as.computation = Computation{}
+	as.algorithm = nil
+	as.result = nil
+	as.runError = nil
+	as.resultsConsumed = false
+
+	return nil
+}
+
+func (as *agentService) Algo(ctx context.Context, algo Algorithm) error {
+	if as.sm.GetState() != ReceivingAlgorithm {
+		return ErrStateNotReady
+	}
+	as.mu.Lock()
+	defer as.mu.Unlock()
 	if as.algorithm != nil {
 		return ErrAllManifestItemsReceived
 	}
@@ -124,7 +260,7 @@ func (as *agentService) Algo(ctx context.Context, algo Algorithm) error {
 		return fmt.Errorf("error getting current directory: %v", err)
 	}
 
-	f, err := os.Create(filepath.Join(currentDir, "algorithm"))
+	f, err := os.Create(filepath.Join(currentDir, "algo"))
 	if err != nil {
 		return fmt.Errorf("error creating algorithm file: %v", err)
 	}
@@ -150,7 +286,7 @@ func (as *agentService) Algo(ctx context.Context, algo Algorithm) error {
 
 	switch algoType {
 	case string(algorithm.AlgoTypeBin):
-		as.algorithm = binary.NewAlgorithm(as.sm.logger, as.eventSvc, f.Name(), args)
+		as.algorithm = binary.NewAlgorithm(as.logger, as.eventSvc, f.Name(), args, as.computation.ID)
 	case string(algorithm.AlgoTypePython):
 		var requirementsFile string
 		if len(algo.Requirements) > 0 {
@@ -168,11 +304,11 @@ func (as *agentService) Algo(ctx context.Context, algo Algorithm) error {
 			requirementsFile = fr.Name()
 		}
 		runtime := python.PythonRunTimeFromContext(ctx)
-		as.algorithm = python.NewAlgorithm(as.sm.logger, as.eventSvc, runtime, requirementsFile, f.Name(), args)
+		as.algorithm = python.NewAlgorithm(as.logger, as.eventSvc, runtime, requirementsFile, f.Name(), args, as.computation.ID)
 	case string(algorithm.AlgoTypeWasm):
-		as.algorithm = wasm.NewAlgorithm(as.sm.logger, as.eventSvc, f.Name(), args)
+		as.algorithm = wasm.NewAlgorithm(as.logger, as.eventSvc, args, f.Name(), as.computation.ID)
 	case string(algorithm.AlgoTypeDocker):
-		as.algorithm = docker.NewAlgorithm(as.sm.logger, as.eventSvc, f.Name())
+		as.algorithm = docker.NewAlgorithm(as.logger, as.eventSvc, f.Name(), as.computation.ID)
 	}
 
 	if err := os.Mkdir(algorithm.DatasetsDir, 0o755); err != nil {
@@ -180,16 +316,18 @@ func (as *agentService) Algo(ctx context.Context, algo Algorithm) error {
 	}
 
 	if as.algorithm != nil {
-		as.sm.SendEvent(algorithmReceived)
+		as.sm.SendEvent(AlgorithmReceived)
 	}
 
 	return nil
 }
 
 func (as *agentService) Data(ctx context.Context, dataset Dataset) error {
-	if as.sm.GetState() != receivingData {
+	if as.sm.GetState() != ReceivingData {
 		return ErrStateNotReady
 	}
+	as.mu.Lock()
+	defer as.mu.Unlock()
 	if len(as.computation.Datasets) == 0 {
 		return ErrAllManifestItemsReceived
 	}
@@ -233,93 +371,112 @@ func (as *agentService) Data(ctx context.Context, dataset Dataset) error {
 	}
 
 	if len(as.computation.Datasets) == 0 {
-		as.sm.SendEvent(dataReceived)
+		defer as.sm.SendEvent(DataReceived)
 	}
 
 	return nil
 }
 
 func (as *agentService) Result(ctx context.Context) ([]byte, error) {
-	if as.sm.GetState() != resultsReady && as.sm.GetState() != failed {
+	currentState := as.sm.GetState()
+	if currentState != ConsumingResults && currentState != Complete && currentState != Failed {
 		return []byte{}, ErrResultsNotReady
 	}
-	if len(as.computation.ResultConsumers) == 0 {
-		return []byte{}, ErrAllResultsConsumed
-	}
+
 	index, ok := IndexFromContext(ctx)
 	if !ok {
 		return []byte{}, ErrUndeclaredConsumer
 	}
-	as.computation.ResultConsumers = slices.Delete(as.computation.ResultConsumers, index, index+1)
 
-	if len(as.computation.ResultConsumers) == 0 && as.sm.GetState() == resultsReady {
-		as.sm.SendEvent(resultsConsumed)
+	as.mu.Lock()
+	defer as.mu.Unlock()
+	if index < 0 || index >= len(as.computation.ResultConsumers) {
+		return []byte{}, ErrUndeclaredConsumer
+	}
+
+	if !as.resultsConsumed && currentState == ConsumingResults {
+		as.resultsConsumed = true
+		defer as.sm.SendEvent(ResultsConsumed)
 	}
 
 	return as.result, as.runError
 }
 
-func (as *agentService) Attestation(ctx context.Context, reportData [ReportDataSize]byte) ([]byte, error) {
-	rawQuote, err := as.quoteProvider.GetRawQuote(reportData)
-	if err != nil {
-		return []byte{}, err
+func (as *agentService) Attestation(ctx context.Context, reportData [quoteprovider.Nonce]byte, nonce [vtpm.Nonce]byte, attType config.AttestationType) ([]byte, error) {
+	switch attType {
+	case config.SNP:
+		rawQuote, err := as.quoteProvider.GetRawQuoteAtLevel(reportData, uint(as.vmpl))
+		if err != nil {
+			return []byte{}, err
+		}
+		return rawQuote, nil
+	case config.VTPM:
+		vTPMQuote, err := vtpm.Attest(reportData[:], nonce[:], false)
+		if err != nil {
+			return []byte{}, err
+		}
+		return vTPMQuote, nil
+	case config.SNPvTPM:
+		vTPMQuote, err := vtpm.Attest(reportData[:], nonce[:], true)
+		if err != nil {
+			return []byte{}, err
+		}
+		return vTPMQuote, nil
+	default:
+		return []byte{}, ErrAttestationType
 	}
-
-	return rawQuote, nil
 }
 
-func (as *agentService) runComputation() {
-	as.publishEvent("starting", json.RawMessage{})()
-	as.sm.logger.Debug("computation run started")
+func (as *agentService) runComputation(state statemachine.State) {
+	as.publishEvent(Starting.String())(state)
+	as.logger.Debug("computation run started")
 	defer func() {
 		if as.runError != nil {
-			as.sm.SendEvent(runFailed)
+			as.sm.SendEvent(RunFailed)
 		} else {
-			as.sm.SendEvent(runComplete)
+			as.sm.SendEvent(RunComplete)
 		}
 	}()
 
 	if err := os.Mkdir(algorithm.ResultsDir, 0o755); err != nil {
 		as.runError = fmt.Errorf("error creating results directory: %s", err.Error())
-		as.sm.logger.Warn(as.runError.Error())
-		as.publishEvent("failed", json.RawMessage{})()
+		as.logger.Warn(as.runError.Error())
+		as.publishEvent(Failed.String())(state)
 		return
 	}
 
 	defer func() {
 		if err := os.RemoveAll(algorithm.ResultsDir); err != nil {
-			as.sm.logger.Warn(fmt.Sprintf("error removing results directory and its contents: %s", err.Error()))
+			as.logger.Warn(fmt.Sprintf("error removing results directory and its contents: %s", err.Error()))
 		}
 		if err := os.RemoveAll(algorithm.DatasetsDir); err != nil {
-			as.sm.logger.Warn(fmt.Sprintf("error removing datasets directory and its contents: %s", err.Error()))
+			as.logger.Warn(fmt.Sprintf("error removing datasets directory and its contents: %s", err.Error()))
 		}
 	}()
 
-	as.publishEvent("in-progress", json.RawMessage{})()
+	as.publishEvent(InProgress.String())(state)
 	if err := as.algorithm.Run(); err != nil {
 		as.runError = err
-		as.sm.logger.Warn(fmt.Sprintf("failed to run computation: %s", err.Error()))
-		as.publishEvent("failed", json.RawMessage{})()
+		as.logger.Warn(fmt.Sprintf("failed to run computation: %s", err.Error()))
+		as.publishEvent(Failed.String())(state)
 		return
 	}
 
 	results, err := internal.ZipDirectoryToMemory(algorithm.ResultsDir)
 	if err != nil {
 		as.runError = err
-		as.sm.logger.Warn(fmt.Sprintf("failed to zip results: %s", err.Error()))
-		as.publishEvent("failed", json.RawMessage{})()
+		as.logger.Warn(fmt.Sprintf("failed to zip results: %s", err.Error()))
+		as.publishEvent(Failed.String())(state)
 		return
 	}
 
-	as.publishEvent("complete", json.RawMessage{})()
+	as.publishEvent(Completed.String())(state)
 
 	as.result = results
 }
 
-func (as *agentService) publishEvent(status string, details json.RawMessage) func() {
-	return func() {
-		if err := as.eventSvc.SendEvent(as.sm.State.String(), status, details); err != nil {
-			as.sm.logger.Warn(err.Error())
-		}
+func (as *agentService) publishEvent(status string) statemachine.Action {
+	return func(state statemachine.State) {
+		as.eventSvc.SendEvent(as.computation.ID, state.String(), status, json.RawMessage{})
 	}
 }

agent/service_test.go

@@ -0,0 +1,404 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package agent
+
+import (
+	"context"
+	"crypto/rand"
+	"log"
+	"os"
+	"testing"
+	"time"
+
+	mglog "github.com/absmach/magistrala/logger"
+	"github.com/absmach/magistrala/pkg/errors"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"github.com/ultravioletrs/cocos/agent/algorithm"
+	"github.com/ultravioletrs/cocos/agent/algorithm/python"
+	"github.com/ultravioletrs/cocos/agent/events/mocks"
+	"github.com/ultravioletrs/cocos/agent/statemachine"
+	smmocks "github.com/ultravioletrs/cocos/agent/statemachine/mocks"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	mocks2 "github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider/mocks"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
+	"golang.org/x/crypto/sha3"
+	"google.golang.org/grpc/metadata"
+)
+
+var (
+	algoPath = "../test/manual/algo/lin_reg.py"
+	reqPath  = "../test/manual/algo/requirements.txt"
+	dataPath = "../test/manual/data/iris.csv"
+)
+
+const datasetFile = "iris.csv"
+
+func TestAlgo(t *testing.T) {
+	qp, err := quoteprovider.GetLeveledQuoteProvider()
+	require.NoError(t, err)
+
+	algo, err := os.ReadFile(algoPath)
+	require.NoError(t, err)
+
+	algoHash := sha3.Sum256(algo)
+
+	reqFile, err := os.ReadFile(reqPath)
+	require.NoError(t, err)
+
+	testCases := []struct {
+		name     string
+		err      error
+		algo     Algorithm
+		algoType string
+	}{
+		{
+			name: "Test Algo successfully",
+			algo: Algorithm{
+				Algorithm: algo,
+				Hash:      algoHash,
+			},
+			algoType: "python",
+			err:      nil,
+		},
+		{
+			name: "Test Algo successfully with requirements file",
+			algo: Algorithm{
+				Algorithm:    algo,
+				Hash:         algoHash,
+				Requirements: reqFile,
+			},
+			algoType: "python",
+			err:      nil,
+		},
+		{
+			name: "Test Algo type binary successfully",
+			algo: Algorithm{
+				Algorithm: algo,
+				Hash:      algoHash,
+			},
+			algoType: "bin",
+			err:      nil,
+		},
+		{
+			name: "Test Algo type wasm successfully",
+			algo: Algorithm{
+				Algorithm: algo,
+				Hash:      algoHash,
+			},
+			algoType: "wasm",
+			err:      nil,
+		},
+		{
+			name: "Test Algo type docker successfully",
+			algo: Algorithm{
+				Algorithm: algo,
+				Hash:      algoHash,
+			},
+			algoType: "docker",
+			err:      nil,
+		},
+		{
+			name:     "Test algo hash mismatch",
+			algo:     Algorithm{},
+			algoType: "python",
+			err:      ErrHashMismatch,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			err = os.RemoveAll("datasets")
+			require.NoError(t, err)
+
+			ctx := metadata.NewIncomingContext(context.Background(),
+				metadata.Pairs(algorithm.AlgoTypeKey, tc.algoType, python.PyRuntimeKey, python.PyRuntime),
+			)
+
+			events := new(mocks.Service)
+			events.EXPECT().SendEvent(mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return()
+
+			ctx, cancel := context.WithCancel(ctx)
+			defer cancel()
+			svc := New(ctx, mglog.NewMock(), events, qp, 0)
+
+			err := svc.InitComputation(ctx, testComputation(t))
+			require.NoError(t, err)
+
+			time.Sleep(300 * time.Millisecond)
+
+			err = svc.Algo(ctx, tc.algo)
+			assert.True(t, errors.Contains(err, tc.err), "expected %v, got %v", tc.err, err)
+			t.Cleanup(func() {
+				err = os.RemoveAll("venv")
+				err = os.RemoveAll("algo")
+				err = os.RemoveAll("datasets")
+			})
+		})
+	}
+}
+
+func TestData(t *testing.T) {
+	qp, err := quoteprovider.GetLeveledQuoteProvider()
+	require.NoError(t, err)
+
+	algo, err := os.ReadFile(algoPath)
+	require.NoError(t, err)
+
+	algoHash := sha3.Sum256(algo)
+
+	alg := Algorithm{
+		Hash:      algoHash,
+		Algorithm: algo,
+	}
+
+	data, err := os.ReadFile(dataPath)
+	require.NoError(t, err)
+
+	dataHash := sha3.Sum256(data)
+
+	cases := []struct {
+		name string
+		data Dataset
+		err  error
+	}{
+		{
+			name: "Test data successfully",
+			data: Dataset{
+				Hash:     dataHash,
+				Dataset:  data,
+				Filename: datasetFile,
+			},
+		},
+		{
+			name: "Test State not ready",
+			data: Dataset{
+				Dataset:  data,
+				Hash:     dataHash,
+				Filename: datasetFile,
+			},
+			err: ErrStateNotReady,
+		},
+		{
+			name: "Test File name does not match manifest",
+			data: Dataset{
+				Dataset:  data,
+				Hash:     dataHash,
+				Filename: "invalid",
+			},
+			err: ErrFileNameMismatch,
+		},
+		{
+			name: "Test dataset not declared in manifest",
+			data: Dataset{
+				Filename: datasetFile,
+			},
+			err: ErrUndeclaredDataset,
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			ctx := metadata.NewIncomingContext(context.Background(),
+				metadata.Pairs(
+					algorithm.AlgoTypeKey, "python",
+					python.PyRuntimeKey, python.PyRuntime),
+			)
+
+			events := new(mocks.Service)
+			events.EXPECT().SendEvent(mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return()
+
+			if tc.err != ErrUndeclaredDataset {
+				ctx = IndexToContext(ctx, 0)
+			}
+
+			ctx, cancel := context.WithCancel(ctx)
+			defer cancel()
+
+			svc := New(ctx, mglog.NewMock(), events, qp, 0)
+
+			err := svc.InitComputation(ctx, testComputation(t))
+			require.NoError(t, err)
+
+			time.Sleep(300 * time.Millisecond)
+
+			if tc.err != ErrStateNotReady {
+				err = svc.Algo(ctx, alg)
+				require.NoError(t, err)
+				time.Sleep(300 * time.Millisecond)
+			}
+			err = svc.Data(ctx, tc.data)
+			assert.True(t, errors.Contains(err, tc.err), "expected %v, got %v", tc.err, err)
+			t.Cleanup(func() {
+				_ = os.RemoveAll("datasets")
+				_ = os.RemoveAll("results")
+				err = os.RemoveAll("venv")
+				err = os.RemoveAll("algo")
+			})
+		})
+	}
+}
+
+func TestResult(t *testing.T) {
+	qp, err := quoteprovider.GetLeveledQuoteProvider()
+	require.NoError(t, err)
+
+	cases := []struct {
+		name     string
+		err      error
+		setup    func(svc *agentService)
+		ctxSetup func(ctx context.Context) context.Context
+		state    statemachine.State
+	}{
+		{
+			name: "Test results not ready",
+			err:  ErrResultsNotReady,
+			setup: func(svc *agentService) {
+			},
+			state: Running,
+		},
+		{
+			name: "Test undeclared consumer",
+			err:  ErrUndeclaredConsumer,
+			setup: func(svc *agentService) {
+				svc.computation.ResultConsumers = []ResultConsumer{{UserKey: []byte("user")}}
+			},
+			ctxSetup: func(ctx context.Context) context.Context {
+				return ctx
+			},
+			state: ConsumingResults,
+		},
+		{
+			name: "Test results consumed and event sent",
+			err:  nil,
+			setup: func(svc *agentService) {
+				svc.computation.ResultConsumers = []ResultConsumer{{UserKey: []byte("key")}}
+			},
+			ctxSetup: func(ctx context.Context) context.Context {
+				return IndexToContext(ctx, 0)
+			},
+			state: ConsumingResults,
+		},
+	}
+
+	for _, tc := range cases {
+		events := new(mocks.Service)
+		events.EXPECT().SendEvent(mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return()
+
+		t.Run(tc.name, func(t *testing.T) {
+			ctx := metadata.NewIncomingContext(context.Background(),
+				metadata.Pairs(algorithm.AlgoTypeKey, "python", python.PyRuntimeKey, python.PyRuntime),
+			)
+
+			if tc.ctxSetup != nil {
+				ctx = tc.ctxSetup(ctx)
+			}
+
+			sm := new(smmocks.StateMachine)
+			sm.On("Start", ctx).Return(nil)
+			sm.On("GetState").Return(tc.state)
+			sm.On("SendEvent", mock.Anything).Return()
+
+			svc := &agentService{
+				sm:            sm,
+				eventSvc:      events,
+				quoteProvider: qp,
+				computation:   testComputation(t),
+			}
+
+			go func() {
+				if err := svc.sm.Start(ctx); err != nil {
+					t.Errorf("Error starting state machine: %v", err)
+				}
+			}()
+			tc.setup(svc)
+			_, err := svc.Result(ctx)
+			t.Cleanup(func() {
+				_ = os.RemoveAll("datasets")
+				_ = os.RemoveAll("results")
+			})
+			assert.ErrorIs(t, err, tc.err, "expected %v, got %v", tc.err, err)
+		})
+	}
+}
+
+func TestAttestation(t *testing.T) {
+	qp := new(mocks2.LeveledQuoteProvider)
+
+	cases := []struct {
+		name       string
+		reportData [quoteprovider.Nonce]byte
+		nonce      [vtpm.Nonce]byte
+		rawQuote   []uint8
+		err        error
+	}{
+		{
+			name:       "Test attestation successful",
+			reportData: generateReportData(),
+			nonce:      [32]byte{},
+			rawQuote:   make([]uint8, 0),
+			err:        nil,
+		},
+		{
+			name:       "Test attestation failed",
+			reportData: generateReportData(),
+			nonce:      [32]byte{},
+			rawQuote:   nil,
+			err:        ErrAttestationFailed,
+		},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			events := new(mocks.Service)
+			events.EXPECT().SendEvent(mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return()
+
+			ctx := metadata.NewIncomingContext(context.Background(),
+				metadata.Pairs(algorithm.AlgoTypeKey, "python", python.PyRuntimeKey, python.PyRuntime),
+			)
+			ctx, cancel := context.WithCancel(ctx)
+			defer cancel()
+
+			getQuote := qp.On("GetRawQuoteAtLevel", mock.Anything, mock.Anything).Return(tc.rawQuote, tc.err)
+			if tc.err != ErrAttestationFailed {
+				getQuote = qp.On("GetRawQuoteAtLevel", mock.Anything, mock.Anything).Return(tc.nonce, nil)
+			}
+			defer getQuote.Unset()
+
+			svc := New(ctx, mglog.NewMock(), events, qp, 0)
+			time.Sleep(300 * time.Millisecond)
+			_, err := svc.Attestation(ctx, tc.reportData, tc.nonce, 0)
+			assert.True(t, errors.Contains(err, tc.err), "expected %v, got %v", tc.err, err)
+		})
+	}
+}
+
+func generateReportData() [quoteprovider.Nonce]byte {
+	bytes := make([]byte, quoteprovider.Nonce)
+	_, err := rand.Read(bytes)
+	if err != nil {
+		log.Fatalf("Failed to generate random bytes: %v", err)
+	}
+	return [64]byte(bytes)
+}
+
+func testComputation(t *testing.T) Computation {
+	algo, err := os.ReadFile(algoPath)
+	require.NoError(t, err)
+
+	algoHash := sha3.Sum256(algo)
+
+	data, err := os.ReadFile(dataPath)
+	require.NoError(t, err)
+
+	dataHash := sha3.Sum256(data)
+
+	return Computation{
+		ID:              "1",
+		Name:            "sample computation",
+		Description:     "sample description",
+		Datasets:        []Dataset{{Hash: dataHash, UserKey: []byte("key"), Dataset: data, Filename: datasetFile}},
+		Algorithm:       Algorithm{Hash: algoHash, UserKey: []byte("key"), Algorithm: algo},
+		ResultConsumers: []ResultConsumer{{UserKey: []byte("key")}},
+	}
+}

agent/state.go

@@ -1,131 +0,0 @@
-// Copyright (c) Ultraviolet
-// SPDX-License-Identifier: Apache-2.0
-package agent
-
-import (
-	"context"
-	"fmt"
-	"log/slog"
-	"sync"
-)
-
-//go:generate stringer -type=state
-type state uint8
-
-const (
-	idle state = iota
-	receivingManifest
-	receivingAlgorithm
-	receivingData
-	running
-	resultsReady
-	complete
-	failed
-)
-
-type event uint8
-
-const (
-	start event = iota
-	manifestReceived
-	algorithmReceived
-	dataReceived
-	runComplete
-	resultsConsumed
-	runFailed
-)
-
-// StateMachine represents the state machine.
-type StateMachine struct {
-	mu             sync.Mutex
-	State          state
-	EventChan      chan event
-	Transitions    map[state]map[event]state
-	StateFunctions map[state]func()
-	logger         *slog.Logger
-	wg             *sync.WaitGroup
-}
-
-// NewStateMachine creates a new StateMachine.
-func NewStateMachine(logger *slog.Logger, cmp Computation) *StateMachine {
-	sm := &StateMachine{
-		State:          idle,
-		EventChan:      make(chan event),
-		Transitions:    make(map[state]map[event]state),
-		StateFunctions: make(map[state]func()),
-		logger:         logger,
-		wg:             &sync.WaitGroup{},
-	}
-
-	sm.Transitions[idle] = make(map[event]state)
-	sm.Transitions[idle][start] = receivingManifest
-
-	sm.Transitions[receivingManifest] = make(map[event]state)
-	sm.Transitions[receivingManifest][manifestReceived] = receivingAlgorithm
-
-	sm.Transitions[receivingAlgorithm] = make(map[event]state)
-	switch len(cmp.Datasets) {
-	case 0:
-		sm.Transitions[receivingAlgorithm][algorithmReceived] = running
-	default:
-		sm.Transitions[receivingAlgorithm][algorithmReceived] = receivingData
-	}
-
-	sm.Transitions[receivingData] = make(map[event]state)
-	sm.Transitions[receivingData][dataReceived] = running
-
-	sm.Transitions[running] = make(map[event]state)
-	sm.Transitions[running][runComplete] = resultsReady
-	sm.Transitions[running][runFailed] = failed
-
-	sm.Transitions[resultsReady] = make(map[event]state)
-	sm.Transitions[resultsReady][resultsConsumed] = complete
-
-	return sm
-}
-
-// Start the state machine.
-func (sm *StateMachine) Start(ctx context.Context) {
-	sm.wg.Add(1)
-	defer sm.wg.Done()
-	for {
-		select {
-		case event := <-sm.EventChan:
-			sm.mu.Lock()
-			nextState, valid := sm.Transitions[sm.State][event]
-			if valid {
-				sm.State = nextState
-				sm.logger.Debug(fmt.Sprintf("Transition: %v -> %v\n", sm.State, nextState))
-			} else {
-				sm.logger.Error(fmt.Sprintf("Invalid transition: %v -> ???\n", sm.State))
-			}
-			sm.mu.Unlock()
-
-			sm.mu.Lock()
-			stateFunc, exists := sm.StateFunctions[sm.State]
-			sm.mu.Unlock()
-			if exists {
-				go stateFunc()
-			}
-		case <-ctx.Done():
-			return
-		}
-	}
-}
-
-// SendEvent sends an event to the state machine.
-func (sm *StateMachine) SendEvent(event event) {
-	sm.EventChan <- event
-}
-
-func (sm *StateMachine) GetState() state {
-	sm.mu.Lock()
-	defer sm.mu.Unlock()
-	return sm.State
-}
-
-func (sm *StateMachine) SetState(state state) {
-	sm.mu.Lock()
-	defer sm.mu.Unlock()
-	sm.State = state
-}

agent/state_string.go

@@ -1,30 +0,0 @@
-// Code generated by "stringer -type=state"; DO NOT EDIT.
-
-package agent
-
-import "strconv"
-
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[idle-0]
-	_ = x[receivingManifest-1]
-	_ = x[receivingAlgorithm-2]
-	_ = x[receivingData-3]
-	_ = x[running-4]
-	_ = x[resultsReady-5]
-	_ = x[complete-6]
-	_ = x[failed-7]
-}
-
-const _state_name = "idlereceivingManifestreceivingAlgorithmreceivingDatarunningresultsReadycompletefailed"
-
-var _state_index = [...]uint8{0, 4, 21, 39, 52, 59, 71, 79, 85}
-
-func (i state) String() string {
-	if i >= state(len(_state_index)-1) {
-		return "state(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-	return _state_name[_state_index[i]:_state_index[i+1]]
-}

agent/state_test.go

@@ -4,69 +4,249 @@ package agent
 
 import (
 	"context"
-	"fmt"
+	sync "sync"
 	"testing"
+	"time"
 
-	mglog "github.com/absmach/magistrala/logger"
+	"github.com/ultravioletrs/cocos/agent/statemachine"
 )
 
-var cmp = Computation{
-	Datasets: []Dataset{
-		{
-			Dataset: []byte("test"),
-			UserKey: []byte("test"),
-		},
-	},
+type MockState int
+
+type MockEvent int
+
+func (s MockState) String() string {
+	return []string{"State1", "State2", "State3"}[s]
 }
 
-func TestStateMachineTransitions(t *testing.T) {
-	cases := []struct {
-		fromState state
-		event     event
-		expected  state
-		cmp       Computation
+func (e MockEvent) String() string {
+	return []string{"Event1", "Event2", "Event3"}[e]
+}
+
+const (
+	State1 MockState = iota
+	State2
+	State3
+)
+
+const (
+	Event1 MockEvent = iota
+	Event2
+	Event3
+)
+
+func TestNewStateMachine(t *testing.T) {
+	sm := statemachine.NewStateMachine(State1)
+	if sm == nil {
+		t.Fatal("NewStateMachine returned nil")
+	}
+	if sm.GetState() != State1 {
+		t.Errorf("Initial state not set correctly, got %v, want %v", sm.GetState(), State1)
+	}
+}
+
+func TestAddTransition(t *testing.T) {
+	sm := statemachine.NewStateMachine(State1)
+	sm.AddTransition(statemachine.Transition{From: State1, Event: Event1, To: State2})
+
+	ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
+	defer cancel()
+
+	go func() {
+		if err := sm.Start(ctx); err != context.Canceled {
+			t.Errorf("Start returned error: %v", err)
+		}
+	}()
+
+	sm.SendEvent(Event1)
+
+	time.Sleep(50 * time.Millisecond)
+
+	if sm.GetState() != State2 {
+		t.Errorf("Transition not applied correctly, got state %v, want %v", sm.GetState(), State2)
+	}
+}
+
+func TestSetAction(t *testing.T) {
+	sm := statemachine.NewStateMachine(State1)
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+
+	sm.SetAction(State2, func(s statemachine.State) {
+		defer wg.Done()
+	})
+
+	sm.AddTransition(statemachine.Transition{From: State1, Event: Event1, To: State2})
+
+	ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
+	defer cancel()
+
+	go func() {
+		if err := sm.Start(ctx); err != context.Canceled {
+			t.Errorf("Start returned error: %v", err)
+		}
+	}()
+
+	sm.SendEvent(Event1)
+
+	wg.Wait()
+
+	if ctx.Err() != nil {
+		t.Error("Action was not called within the expected time")
+	}
+}
+
+func TestInvalidTransition(t *testing.T) {
+	sm := statemachine.NewStateMachine(State1)
+	sm.AddTransition(statemachine.Transition{From: State1, Event: Event1, To: State2})
+
+	ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
+	defer cancel()
+
+	errChan := make(chan error)
+	go func() {
+		errChan <- sm.Start(ctx)
+	}()
+
+	sm.SendEvent(Event2)
+
+	select {
+	case err := <-errChan:
+		if err == nil {
+			t.Errorf("Expected invalid transition error, got: %v", err)
+		}
+	case <-time.After(150 * time.Millisecond):
+		t.Error("Timeout waiting for invalid transition error")
+	}
+}
+
+func TestMultipleTransitions(t *testing.T) {
+	sm := statemachine.NewStateMachine(State1)
+	sm.AddTransition(statemachine.Transition{From: State1, Event: Event1, To: State2})
+	sm.AddTransition(statemachine.Transition{From: State2, Event: Event2, To: State3})
+	sm.AddTransition(statemachine.Transition{From: State3, Event: Event3, To: State1})
+
+	ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
+	defer cancel()
+
+	go func() {
+		if err := sm.Start(ctx); err != context.Canceled {
+			t.Errorf("Start returned error: %v", err)
+		}
+	}()
+
+	transitions := []struct {
+		event MockEvent
+		want  MockState
 	}{
-		{idle, start, receivingManifest, cmp},
-		{receivingManifest, manifestReceived, receivingAlgorithm, cmp},
-		{receivingAlgorithm, algorithmReceived, receivingData, cmp},
-		{receivingAlgorithm, algorithmReceived, running, Computation{}},
-		{receivingData, dataReceived, running, cmp},
-		{running, runComplete, resultsReady, cmp},
-		{resultsReady, resultsConsumed, complete, cmp},
+		{Event1, State2},
+		{Event2, State3},
+		{Event3, State1},
 	}
 
-	for _, tc := range cases {
-		t.Run(fmt.Sprintf("Transition from %v to %v", tc.fromState, tc.expected), func(t *testing.T) {
-			sm := NewStateMachine(mglog.NewMock(), tc.cmp)
-			ctx, cancel := context.WithCancel(context.Background())
-			go func() {
-				sm.Start(ctx)
-			}()
-			sm.wg.Wait()
-			sm.SetState(tc.fromState)
+	for _, tt := range transitions {
+		sm.SendEvent(tt.event)
+		time.Sleep(50 * time.Millisecond)
 
-			sm.SendEvent(tc.event)
-
-			if sm.GetState() != tc.expected {
-				t.Errorf("Expected state %v after the event, but got %v", tc.expected, sm.GetState())
-			}
-			close(sm.EventChan)
-			cancel()
-		})
+		if sm.GetState() != tt.want {
+			t.Errorf("After event %v, got state %v, want %v", tt.event, sm.GetState(), tt.want)
+		}
 	}
 }
 
-func TestStateMachineInvalidTransition(t *testing.T) {
-	sm := NewStateMachine(mglog.NewMock(), cmp)
-	ctx, cancel := context.WithCancel(context.Background())
-	go sm.Start(ctx)
+func TestConcurrency(t *testing.T) {
+	sm := statemachine.NewStateMachine(State1)
+	sm.AddTransition(statemachine.Transition{From: State1, Event: Event1, To: State2})
+	sm.AddTransition(statemachine.Transition{From: State2, Event: Event2, To: State1})
 
-	sm.SetState(idle)
+	ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
+	defer cancel()
 
-	sm.SendEvent(dataReceived)
+	go func() {
+		if err := sm.Start(ctx); err == nil {
+			t.Errorf("Expected context error, got nil")
+		}
+	}()
 
-	if sm.State != idle {
-		t.Errorf("State should not change on an invalid event, but got %v", sm.State)
+	for i := 0; i < 100; i++ {
+		go func() {
+			sm.SendEvent(Event1)
+			sm.SendEvent(Event2)
+		}()
+	}
+
+	time.Sleep(400 * time.Millisecond)
+
+	finalState := sm.GetState()
+	if finalState != State1 && finalState != State2 {
+		t.Errorf("Unexpected final state: %v", finalState)
+	}
+}
+
+func TestAgentEventString(t *testing.T) {
+	tests := []struct {
+		event AgentEvent
+		want  string
+	}{
+		{Start, "Start"},
+		{ManifestReceived, "ManifestReceived"},
+		{AlgorithmReceived, "AlgorithmReceived"},
+		{DataReceived, "DataReceived"},
+		{RunComplete, "RunComplete"},
+		{ResultsConsumed, "ResultsConsumed"},
+		{RunFailed, "RunFailed"},
+		{AgentEvent(-1), "AgentEvent(-1)"},
+	}
+
+	for _, tt := range tests {
+		if got := tt.event.String(); got != tt.want {
+			t.Errorf("AgentEvent.String() = %v, want %v", got, tt.want)
+		}
+	}
+}
+
+func TestAgentStateString(t *testing.T) {
+	tests := []struct {
+		state AgentState
+		want  string
+	}{
+		{Idle, "Idle"},
+		{ReceivingManifest, "ReceivingManifest"},
+		{ReceivingAlgorithm, "ReceivingAlgorithm"},
+		{ReceivingData, "ReceivingData"},
+		{Running, "Running"},
+		{ConsumingResults, "ConsumingResults"},
+		{Complete, "Complete"},
+		{Failed, "Failed"},
+		{AgentState(-1), "AgentState(-1)"},
+	}
+
+	for _, tt := range tests {
+		if got := tt.state.String(); got != tt.want {
+			t.Errorf("AgentState.String() = %v, want %v", got, tt.want)
+		}
+	}
+}
+
+func TestStatusString(t *testing.T) {
+	tests := []struct {
+		status Status
+		want   string
+	}{
+		{IdleState, "IdleState"},
+		{InProgress, "InProgress"},
+		{Ready, "Ready"},
+		{Completed, "Completed"},
+		{Terminated, "Terminated"},
+		{Warning, "Warning"},
+		{Starting, "Starting"},
+		{Status(uint8(8)), "Status(8)"},
+	}
+
+	for _, tt := range tests {
+		if got := tt.status.String(); got != tt.want {
+			t.Errorf("Status.String() = %v, want %v", got, tt.want)
+		}
 	}
-	cancel()
 }

agent/statemachine/mocks/state.go

@@ -0,0 +1,233 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+// Code generated by mockery v2.43.2. DO NOT EDIT.
+
+package mocks
+
+import (
+	context "context"
+
+	mock "github.com/stretchr/testify/mock"
+	statemachine "github.com/ultravioletrs/cocos/agent/statemachine"
+)
+
+// StateMachine is an autogenerated mock type for the StateMachine type
+type StateMachine struct {
+	mock.Mock
+}
+
+type StateMachine_Expecter struct {
+	mock *mock.Mock
+}
+
+func (_m *StateMachine) EXPECT() *StateMachine_Expecter {
+	return &StateMachine_Expecter{mock: &_m.Mock}
+}
+
+// AddTransition provides a mock function with given fields: t
+func (_m *StateMachine) AddTransition(t statemachine.Transition) {
+	_m.Called(t)
+}
+
+// StateMachine_AddTransition_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'AddTransition'
+type StateMachine_AddTransition_Call struct {
+	*mock.Call
+}
+
+// AddTransition is a helper method to define mock.On call
+//   - t statemachine.Transition
+func (_e *StateMachine_Expecter) AddTransition(t interface{}) *StateMachine_AddTransition_Call {
+	return &StateMachine_AddTransition_Call{Call: _e.mock.On("AddTransition", t)}
+}
+
+func (_c *StateMachine_AddTransition_Call) Run(run func(t statemachine.Transition)) *StateMachine_AddTransition_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(statemachine.Transition))
+	})
+	return _c
+}
+
+func (_c *StateMachine_AddTransition_Call) Return() *StateMachine_AddTransition_Call {
+	_c.Call.Return()
+	return _c
+}
+
+func (_c *StateMachine_AddTransition_Call) RunAndReturn(run func(statemachine.Transition)) *StateMachine_AddTransition_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// GetState provides a mock function with given fields:
+func (_m *StateMachine) GetState() statemachine.State {
+	ret := _m.Called()
+
+	if len(ret) == 0 {
+		panic("no return value specified for GetState")
+	}
+
+	var r0 statemachine.State
+	if rf, ok := ret.Get(0).(func() statemachine.State); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(statemachine.State)
+		}
+	}
+
+	return r0
+}
+
+// StateMachine_GetState_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'GetState'
+type StateMachine_GetState_Call struct {
+	*mock.Call
+}
+
+// GetState is a helper method to define mock.On call
+func (_e *StateMachine_Expecter) GetState() *StateMachine_GetState_Call {
+	return &StateMachine_GetState_Call{Call: _e.mock.On("GetState")}
+}
+
+func (_c *StateMachine_GetState_Call) Run(run func()) *StateMachine_GetState_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run()
+	})
+	return _c
+}
+
+func (_c *StateMachine_GetState_Call) Return(_a0 statemachine.State) *StateMachine_GetState_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *StateMachine_GetState_Call) RunAndReturn(run func() statemachine.State) *StateMachine_GetState_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// SendEvent provides a mock function with given fields: event
+func (_m *StateMachine) SendEvent(event statemachine.Event) {
+	_m.Called(event)
+}
+
+// StateMachine_SendEvent_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'SendEvent'
+type StateMachine_SendEvent_Call struct {
+	*mock.Call
+}
+
+// SendEvent is a helper method to define mock.On call
+//   - event statemachine.Event
+func (_e *StateMachine_Expecter) SendEvent(event interface{}) *StateMachine_SendEvent_Call {
+	return &StateMachine_SendEvent_Call{Call: _e.mock.On("SendEvent", event)}
+}
+
+func (_c *StateMachine_SendEvent_Call) Run(run func(event statemachine.Event)) *StateMachine_SendEvent_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(statemachine.Event))
+	})
+	return _c
+}
+
+func (_c *StateMachine_SendEvent_Call) Return() *StateMachine_SendEvent_Call {
+	_c.Call.Return()
+	return _c
+}
+
+func (_c *StateMachine_SendEvent_Call) RunAndReturn(run func(statemachine.Event)) *StateMachine_SendEvent_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// SetAction provides a mock function with given fields: state, action
+func (_m *StateMachine) SetAction(state statemachine.State, action statemachine.Action) {
+	_m.Called(state, action)
+}
+
+// StateMachine_SetAction_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'SetAction'
+type StateMachine_SetAction_Call struct {
+	*mock.Call
+}
+
+// SetAction is a helper method to define mock.On call
+//   - state statemachine.State
+//   - action statemachine.Action
+func (_e *StateMachine_Expecter) SetAction(state interface{}, action interface{}) *StateMachine_SetAction_Call {
+	return &StateMachine_SetAction_Call{Call: _e.mock.On("SetAction", state, action)}
+}
+
+func (_c *StateMachine_SetAction_Call) Run(run func(state statemachine.State, action statemachine.Action)) *StateMachine_SetAction_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(statemachine.State), args[1].(statemachine.Action))
+	})
+	return _c
+}
+
+func (_c *StateMachine_SetAction_Call) Return() *StateMachine_SetAction_Call {
+	_c.Call.Return()
+	return _c
+}
+
+func (_c *StateMachine_SetAction_Call) RunAndReturn(run func(statemachine.State, statemachine.Action)) *StateMachine_SetAction_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// Start provides a mock function with given fields: ctx
+func (_m *StateMachine) Start(ctx context.Context) error {
+	ret := _m.Called(ctx)
+
+	if len(ret) == 0 {
+		panic("no return value specified for Start")
+	}
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context) error); ok {
+		r0 = rf(ctx)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// StateMachine_Start_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Start'
+type StateMachine_Start_Call struct {
+	*mock.Call
+}
+
+// Start is a helper method to define mock.On call
+//   - ctx context.Context
+func (_e *StateMachine_Expecter) Start(ctx interface{}) *StateMachine_Start_Call {
+	return &StateMachine_Start_Call{Call: _e.mock.On("Start", ctx)}
+}
+
+func (_c *StateMachine_Start_Call) Run(run func(ctx context.Context)) *StateMachine_Start_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		run(args[0].(context.Context))
+	})
+	return _c
+}
+
+func (_c *StateMachine_Start_Call) Return(_a0 error) *StateMachine_Start_Call {
+	_c.Call.Return(_a0)
+	return _c
+}
+
+func (_c *StateMachine_Start_Call) RunAndReturn(run func(context.Context) error) *StateMachine_Start_Call {
+	_c.Call.Return(run)
+	return _c
+}
+
+// NewStateMachine creates a new instance of StateMachine. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewStateMachine(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *StateMachine {
+	mock := &StateMachine{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

agent/statemachine/state.go

@@ -0,0 +1,112 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package statemachine
+
+import (
+	"context"
+	"fmt"
+	"sync"
+)
+
+type State interface {
+	String() string
+}
+
+type Event interface {
+	String() string
+}
+
+type Action func(State)
+
+type Transition struct {
+	From  State
+	Event Event
+	To    State
+}
+
+type StateMachine interface {
+	AddTransition(t Transition)
+	SetAction(state State, action Action)
+	GetState() State
+	SendEvent(event Event)
+	Start(ctx context.Context) error
+}
+
+type stateMachine struct {
+	mu           sync.Mutex
+	currentState State
+	transitions  map[State]map[Event]State
+	actions      map[State]Action
+	eventChan    chan Event
+}
+
+func NewStateMachine(initialState State) StateMachine {
+	return &stateMachine{
+		currentState: initialState,
+		transitions:  make(map[State]map[Event]State),
+		actions:      make(map[State]Action),
+		eventChan:    make(chan Event),
+	}
+}
+
+func (sm *stateMachine) AddTransition(t Transition) {
+	sm.mu.Lock()
+	defer sm.mu.Unlock()
+
+	if _, ok := sm.transitions[t.From]; !ok {
+		sm.transitions[t.From] = make(map[Event]State)
+	}
+	sm.transitions[t.From][t.Event] = t.To
+}
+
+func (sm *stateMachine) SetAction(state State, action Action) {
+	sm.mu.Lock()
+	defer sm.mu.Unlock()
+
+	sm.actions[state] = action
+}
+
+func (sm *stateMachine) GetState() State {
+	sm.mu.Lock()
+	defer sm.mu.Unlock()
+	return sm.currentState
+}
+
+func (sm *stateMachine) SendEvent(event Event) {
+	sm.eventChan <- event
+}
+
+func (sm *stateMachine) Start(ctx context.Context) error {
+	for {
+		select {
+		case event := <-sm.eventChan:
+			if err := sm.handleEvent(event); err != nil {
+				return err
+			}
+		case <-ctx.Done():
+			return ctx.Err()
+		}
+	}
+}
+
+func (sm *stateMachine) handleEvent(event Event) error {
+	sm.mu.Lock()
+	currentState := sm.currentState
+	nextState, valid := sm.transitions[currentState][event]
+	sm.mu.Unlock()
+
+	if !valid {
+		return fmt.Errorf("invalid transition: %v -> %v", currentState, event)
+	}
+
+	sm.mu.Lock()
+	sm.currentState = nextState
+	action := sm.actions[nextState]
+	sm.mu.Unlock()
+
+	if action != nil {
+		go action(nextState)
+	}
+
+	return nil
+}

agent/status_string.go

@@ -0,0 +1,29 @@
+// Code generated by "stringer -type=Status"; DO NOT EDIT.
+
+package agent
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[IdleState-0]
+	_ = x[InProgress-1]
+	_ = x[Ready-2]
+	_ = x[Completed-3]
+	_ = x[Terminated-4]
+	_ = x[Warning-5]
+	_ = x[Starting-6]
+}
+
+const _Status_name = "IdleStateInProgressReadyCompletedTerminatedWarningStarting"
+
+var _Status_index = [...]uint8{0, 9, 19, 24, 33, 43, 50, 58}
+
+func (i Status) String() string {
+	if i >= Status(len(_Status_index)-1) {
+		return "Status(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _Status_name[_Status_index[i]:_Status_index[i+1]]
+}

boilerplate.txt

@@ -0,0 +1,2 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0

cli/README.md

@@ -100,3 +100,22 @@ When defining the manifest dataset and algorithm checksums are required. This ca
 ```bash
 ./build/cocos-cli checksum <path_to_dataset_or_algorithm>
 ```
+
+#### Measure IGVM file
+We assume that our current working directory is the root of the cocos repository, both on the host machine and in the VM.
+
+`igvmmeasure` calculates the launch measurement for an IGVM file and can generate a signed version. It ensures integrity by precomputing the expected launch digest, which can be verified against the attestation report. The tool parses IGVM directives, outputs the measurement as a hex string, or creates a signed file for verification at guest launch.
+
+##### Example
+We measure an IGVM file using our measure command, run:
+
+```bash
+./build/cocos-cli igvmmeasure /path/to/igvm/file
+```
+
+The tool will parse the directives in the IGVM file, calculate the launch measurement, and output the computed digest. If successful, it prints the measurement to standard output.
+
+Here is a sample output
+```
+91c4929bec2d0ecf11a708e09f0a57d7d82208bcba2451564444a4b01c22d047995ca27f9053f86de4e8063e9f810548
+```

cli/algorithm_test.go

@@ -0,0 +1,180 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"bytes"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"errors"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"github.com/ultravioletrs/cocos/pkg/sdk/mocks"
+)
+
+const algorithmFile = "test_algo_file.py"
+
+func generateRSAPrivateKeyFile(fileName string) error {
+	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		return err
+	}
+
+	privKeyFile, err := os.Create(fileName)
+	if err != nil {
+		return err
+	}
+	defer privKeyFile.Close()
+
+	privateKeyPEM := &pem.Block{
+		Type:  rsaKeyType,
+		Bytes: x509.MarshalPKCS1PrivateKey(privateKey),
+	}
+
+	err = pem.Encode(privKeyFile, privateKeyPEM)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func TestAlgorithmCmd(t *testing.T) {
+	tests := []struct {
+		name           string
+		setupMock      func(*mocks.SDK)
+		setupFiles     func() error
+		args           []string
+		connectErr     error
+		expectedOutput string
+		cleanup        func()
+	}{
+		{
+			name: "successful upload",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Algo", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil)
+			},
+			setupFiles: func() error {
+				if err := os.WriteFile(algorithmFile, []byte("test algorithm"), 0o644); err != nil {
+					return err
+				}
+				return generateRSAPrivateKeyFile(privateKeyFile)
+			},
+			args:           []string{algorithmFile, privateKeyFile},
+			expectedOutput: "Successfully uploaded algorithm",
+			cleanup: func() {
+				os.Remove(privateKeyFile)
+				os.Remove(algorithmFile)
+			},
+		},
+		{
+			name: "missing algorithm file",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Algo", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil)
+			},
+			args:           []string{"non_existent_algo_file.py", privateKeyFile},
+			expectedOutput: "Error reading algorithm file",
+		},
+		{
+			name: "missing private key file",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Algo", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil)
+			},
+			setupFiles: func() error {
+				return os.WriteFile(algorithmFile, []byte("test algorithm"), 0o644)
+			},
+			args:           []string{algorithmFile, "non_existent_private_key.pem"},
+			expectedOutput: "Error reading private key file",
+			cleanup: func() {
+				os.Remove(algorithmFile)
+			},
+		},
+		{
+			name: "upload failure",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Algo", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(errors.New("failed to upload algorithm due to error"))
+			},
+			setupFiles: func() error {
+				if err := os.WriteFile(algorithmFile, []byte("test algorithm"), 0o644); err != nil {
+					return err
+				}
+				return generateRSAPrivateKeyFile(privateKeyFile)
+			},
+			args:           []string{algorithmFile, privateKeyFile},
+			expectedOutput: "Failed to upload algorithm",
+			cleanup: func() {
+				os.Remove(privateKeyFile)
+				os.Remove(algorithmFile)
+			},
+		},
+		{
+			name: "invalid private key",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Algo", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil)
+			},
+			setupFiles: func() error {
+				if err := os.WriteFile(algorithmFile, []byte("test algorithm"), 0o644); err != nil {
+					return err
+				}
+				privKeyFile, err := os.Create(privateKeyFile)
+				if err != nil {
+					return err
+				}
+				defer privKeyFile.Close()
+				_, err = privKeyFile.WriteString("invalid private key")
+				return err
+			},
+			args:           []string{algorithmFile, privateKeyFile},
+			expectedOutput: "Error decoding private key",
+			cleanup: func() {
+				os.Remove(algorithmFile)
+				os.Remove(privateKeyFile)
+			},
+		},
+		{
+			name: "connection error",
+			setupMock: func(m *mocks.SDK) {
+			},
+			connectErr:     errors.New("failed to connect to agent"),
+			args:           []string{algorithmFile, privateKeyFile},
+			expectedOutput: "Failed to connect to agent",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mockSDK := new(mocks.SDK)
+			if tt.setupMock != nil {
+				tt.setupMock(mockSDK)
+			}
+
+			testCLI := CLI{
+				agentSDK:   mockSDK,
+				connectErr: tt.connectErr,
+			}
+
+			if tt.setupFiles != nil {
+				err := tt.setupFiles()
+				require.NoError(t, err)
+			}
+
+			cmd := testCLI.NewAlgorithmCmd()
+			buf := new(bytes.Buffer)
+			cmd.SetOut(buf)
+			cmd.SetArgs(tt.args)
+			err := cmd.Execute()
+			require.NoError(t, err)
+
+			require.Contains(t, buf.String(), tt.expectedOutput)
+
+			if tt.cleanup != nil {
+				tt.cleanup()
+			}
+		})
+	}
+}

cli/algorithms.go

@@ -5,11 +5,10 @@ package cli
 import (
 	"context"
 	"encoding/pem"
-	"log"
 	"os"
 
+	"github.com/fatih/color"
 	"github.com/spf13/cobra"
-	"github.com/ultravioletrs/cocos/agent"
 	"github.com/ultravioletrs/cocos/agent/algorithm"
 	"github.com/ultravioletrs/cocos/agent/algorithm/python"
 	"google.golang.org/grpc/metadata"
@@ -29,44 +28,55 @@ func (cli *CLI) NewAlgorithmCmd() *cobra.Command {
 		Example: "algo <algo_file> <private_key_file_path>",
 		Args:    cobra.ExactArgs(2),
 		Run: func(cmd *cobra.Command, args []string) {
+			if cli.connectErr != nil {
+				printError(cmd, "Failed to connect to agent: %v ❌ ", cli.connectErr)
+				return
+			}
+
 			algorithmFile := args[0]
 
-			log.Println("Uploading algorithm file:", algorithmFile)
+			cmd.Println("Uploading algorithm file:", algorithmFile)
 
-			algorithm, err := os.ReadFile(algorithmFile)
+			algorithm, err := os.Open(algorithmFile)
 			if err != nil {
-				log.Fatalf("Error reading algorithm file: %v", err)
+				printError(cmd, "Error reading algorithm file: %v ❌ ", err)
+				return
 			}
 
-			var req []byte
+			defer algorithm.Close()
+
+			var req *os.File
 			if requirementsFile != "" {
-				req, err = os.ReadFile(requirementsFile)
+				req, err = os.Open(requirementsFile)
 				if err != nil {
-					log.Fatalf("Error reading requirments file: %v", err)
+					printError(cmd, "Error reading requirments file: %v ❌ ", err)
+					return
 				}
-			}
-
-			algoReq := agent.Algorithm{
-				Algorithm:    algorithm,
-				Requirements: req,
+				defer req.Close()
 			}
 
 			privKeyFile, err := os.ReadFile(args[1])
 			if err != nil {
-				log.Fatalf("Error reading private key file: %v", err)
+				printError(cmd, "Error reading private key file: %v ❌ ", err)
+				return
 			}
 
 			pemBlock, _ := pem.Decode(privKeyFile)
 
-			privKey := decodeKey(pemBlock)
+			privKey, err := decodeKey(pemBlock)
+			if err != nil {
+				printError(cmd, "Error decoding private key: %v ❌ ", err)
+				return
+			}
 
 			ctx := metadata.NewOutgoingContext(cmd.Context(), metadata.New(make(map[string]string)))
 
-			if err := cli.agentSDK.Algo(addAlgoMetadata(ctx), algoReq, privKey); err != nil {
-				log.Fatalf("Error uploading algorithm with error: %v", err)
+			if err := cli.agentSDK.Algo(addAlgoMetadata(ctx), algorithm, req, privKey); err != nil {
+				printError(cmd, "Failed to upload algorithm due to error: %v ❌ ", err)
+				return
 			}
 
-			log.Println("Successfully uploaded algorithm")
+			cmd.Println(color.New(color.FgGreen).Sprint("Successfully uploaded algorithm! ✔ "))
 		},
 	}
 

cli/attestation.go

@@ -3,24 +3,34 @@
 package cli
 
 import (
+	"crypto"
 	"encoding/hex"
+	"encoding/json"
 	"fmt"
-	"log"
+	"io"
 	"os"
 	"strconv"
 	"strings"
 	"time"
 
+	"github.com/absmach/magistrala/pkg/errors"
+	"github.com/fatih/color"
 	"github.com/google/go-sev-guest/abi"
 	"github.com/google/go-sev-guest/proto/check"
 	"github.com/google/go-sev-guest/proto/sevsnp"
-	"github.com/google/go-sev-guest/validate"
-	"github.com/google/go-sev-guest/verify"
-	"github.com/google/go-sev-guest/verify/trust"
+	"github.com/google/go-sev-guest/tools/lib/report"
+	sevVerify "github.com/google/go-sev-guest/verify"
+	tpmAttest "github.com/google/go-tpm-tools/proto/attest"
+	"github.com/google/go-tpm-tools/server"
+	"github.com/google/go-tpm/legacy/tpm2"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
-	"github.com/ultravioletrs/cocos/agent"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
 	"google.golang.org/protobuf/encoding/protojson"
+	"google.golang.org/protobuf/encoding/prototext"
+	"google.golang.org/protobuf/proto"
 	"google.golang.org/protobuf/types/known/wrapperspb"
 )
 
@@ -41,8 +51,12 @@ const (
 	size48                  = 48
 	size64                  = 64
 	attestationFilePath     = "attestation.bin"
+	vtpmFilePath            = "../quote.dat"
+	attestationJson         = "attestation.json"
 	sevProductNameMilan     = "Milan"
 	sevProductNameGenoa     = "Genoa"
+	FormatBinaryPB          = "binarypb"
+	FormatTextProto         = "textproto"
 	exampleJSONConfig       = `
 	{
 		"rootOfTrust":{
@@ -96,35 +110,55 @@ const (
 		}
 	}
 	`
+	SNP     = "snp"
+	VTPM    = "vtpm"
+	SNPvTPM = "snp-vtpm"
 )
 
 var (
-	cfg                 = check.Config{Policy: &check.Policy{}, RootOfTrust: &check.RootOfTrust{}}
-	cfgString           string
-	timeout             time.Duration
-	maxRetryDelay       time.Duration
-	platformInfo        string
-	stepping            string
-	trustedAuthorKeys   []string
-	trustedAuthorHashes []string
-	trustedIdKeys       []string
-	trustedIdKeyHashes  []string
-	attestationFile     string
-	attestation         []byte
-	empty16             = [size16]byte{}
-	empty32             = [size32]byte{}
-	empty64             = [size64]byte{}
-	defaultReportIdMa   = []byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}
+	mode                    string
+	cfg                     = check.Config{Policy: &check.Policy{}, RootOfTrust: &check.RootOfTrust{}}
+	cfgString               string
+	timeout                 time.Duration
+	maxRetryDelay           time.Duration
+	platformInfo            string
+	stepping                string
+	trustedAuthorKeys       []string
+	trustedAuthorHashes     []string
+	trustedIdKeys           []string
+	trustedIdKeyHashes      []string
+	attestationFile         string
+	tpmAttestationFile      string
+	attestation             []byte
+	empty16                 = [size16]byte{}
+	empty32                 = [size32]byte{}
+	empty64                 = [size64]byte{}
+	defaultReportIdMa       = []byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}
+	errReportSize           = errors.New("attestation contents too small")
+	ErrBadAttestation       = errors.New("attestation file is corrupted or in wrong format")
+	output                  string
+	nonce                   []byte
+	format                  string
+	teeNonce                []byte
+	getTextProtoAttestation bool
 )
 
+var errEmptyFile = errors.New("input file is empty")
+
+var marshalOptions = prototext.MarshalOptions{
+	Multiline: true,
+	EmitASCII: true,
+}
+var unmarshalOptions = prototext.UnmarshalOptions{}
+
 func (cli *CLI) NewAttestationCmd() *cobra.Command {
 	return &cobra.Command{
 		Use:   "attestation [command]",
 		Short: "Get and validate attestations",
 		Run: func(cmd *cobra.Command, args []string) {
-			fmt.Printf("Get and validate attestations\n\n")
-			fmt.Printf("Usage:\n  %s [command]\n\n", cmd.CommandPath())
-			fmt.Printf("Available Commands:\n")
+			cmd.Printf("Get and validate attestations\n\n")
+			cmd.Printf("Usage:\n  %s [command]\n\n", cmd.CommandPath())
+			cmd.Printf("Available Commands:\n")
 
 			// Filter out "completion" command
 			availableCommands := make([]*cobra.Command, 0)
@@ -135,89 +169,283 @@ func (cli *CLI) NewAttestationCmd() *cobra.Command {
 			}
 
 			for _, subCmd := range availableCommands {
-				fmt.Printf("  %-15s%s\n", subCmd.Name(), subCmd.Short)
+				cmd.Printf("  %-15s%s\n", subCmd.Name(), subCmd.Short)
 			}
 
-			fmt.Printf("\nFlags:\n")
+			cmd.Printf("\nFlags:\n")
 			cmd.Flags().VisitAll(func(flag *pflag.Flag) {
-				fmt.Printf("  -%s, --%s %s\n", flag.Shorthand, flag.Name, flag.Usage)
+				cmd.Printf("  -%s, --%s %s\n", flag.Shorthand, flag.Name, flag.Usage)
 			})
-			fmt.Printf("\nUse \"%s [command] --help\" for more information about a command.\n", cmd.CommandPath())
+			cmd.Printf("\nUse \"%s [command] --help\" for more information about a command.\n", cmd.CommandPath())
 		},
 	}
 }
 
 func (cli *CLI) NewGetAttestationCmd() *cobra.Command {
-	return &cobra.Command{
-		Use:     "get",
-		Short:   "Retrieve attestation information from agent. Report data expected in hex enoded string of length 64 bytes.",
-		Example: "get <report_data>",
-		Args:    cobra.ExactArgs(1),
+	cmd := &cobra.Command{
+		Use:       "get",
+		Short:     "Retrieve attestation information from agent. The argument of the command must be the type of the report (snp or vtpm or snp-vtpm).",
+		ValidArgs: []cobra.Completion{SNP, VTPM, SNPvTPM},
+		Example: fmt.Sprintf(`Based on attestation report type:
+		get %s --tee <512 bit hex value>
+		get %s --vtpm <256 bit hex value>
+		get %s --tee <512 bit hex value> --vtpm <256 bit hex value>`, SNP, VTPM, SNPvTPM),
+		Args: cobra.ExactArgs(1),
 		Run: func(cmd *cobra.Command, args []string) {
-			log.Println("Getting attestation")
+			if cli.connectErr != nil {
+				printError(cmd, "Failed to connect to agent: %v ❌ ", cli.connectErr)
+				return
+			}
 
-			reportData, err := hex.DecodeString(args[0])
+			if err := cobra.OnlyValidArgs(cmd, args); err != nil {
+				printError(cmd, "Bad attestation type: %v ❌ ", err)
+				return
+			}
+
+			attestationType := args[0]
+
+			attType := config.SNP
+			switch attestationType {
+			case SNP:
+				cmd.Println("Fetching SEV-SNP attestation report")
+			case VTPM:
+				cmd.Println("Fetching vTPM report")
+				attType = config.VTPM
+			case SNPvTPM:
+				cmd.Println("Fetching SEV-SNP and vTPM report")
+				attType = config.SNPvTPM
+			}
+
+			if (attType == config.VTPM || attType == config.SNPvTPM) && len(nonce) == 0 {
+				msg := color.New(color.FgRed).Sprint("vTPM nonce must be defined for vTPM attestation ❌ ")
+				cmd.Println(msg)
+				return
+			}
+
+			if (attType == config.SNP || attType == config.SNPvTPM) && len(teeNonce) == 0 {
+				msg := color.New(color.FgRed).Sprint("TEE nonce must be defined for SEV-SNP attestation ❌ ")
+				cmd.Println(msg)
+				return
+			}
+
+			var fixedReportData [quoteprovider.Nonce]byte
+			if attType != config.VTPM {
+				if len(teeNonce) > quoteprovider.Nonce {
+					msg := color.New(color.FgRed).Sprintf("nonce must be a hex encoded string of length lesser or equal %d bytes ❌ ", quoteprovider.Nonce)
+					cmd.Println(msg)
+					return
+				}
+
+				copy(fixedReportData[:], teeNonce)
+			}
+
+			var fixedVtpmNonceByte [vtpm.Nonce]byte
+			if attType != config.SNP {
+				if len(nonce) > vtpm.Nonce {
+					msg := color.New(color.FgRed).Sprintf("vTPM nonce must be a hex encoded string of length lesser or equal %d bytes ❌ ", vtpm.Nonce)
+					cmd.Println(msg)
+					return
+				}
+
+				copy(fixedVtpmNonceByte[:], nonce)
+			}
+
+			filename := attestationFilePath
+			if getTextProtoAttestation {
+				filename = attestationJson
+			}
+
+			attestationFile, err := os.Create(filename)
 			if err != nil {
-				log.Fatalf("attestation validation and verification failed with error: %s", err)
-			}
-			if len(reportData) != agent.ReportDataSize {
-				log.Fatalf("report data must be a hex encoded string of length %d bytes", agent.ReportDataSize)
+				printError(cmd, "Error creating attestation file: %v ❌ ", err)
+				return
 			}
 
-			result, err := cli.agentSDK.Attestation(cmd.Context(), [agent.ReportDataSize]byte(reportData))
-			if err != nil {
-				log.Fatalf("Error retrieving attestation: %v", err)
+			if err := cli.agentSDK.Attestation(cmd.Context(), fixedReportData, fixedVtpmNonceByte, int(attType), attestationFile); err != nil {
+				printError(cmd, "Failed to get attestation due to error: %v ❌ ", err)
+				return
 			}
 
-			if err = os.WriteFile(attestationFilePath, result, 0o644); err != nil {
-				log.Fatalf("Error saving attestation result: %v", err)
+			if err := attestationFile.Close(); err != nil {
+				printError(cmd, "Error closing attestation file: %v ❌ ", err)
+				return
 			}
 
-			log.Println("Attestation result retrieved and saved successfully!")
+			if getTextProtoAttestation {
+				result, err := os.ReadFile(filename)
+				if err != nil {
+					printError(cmd, "Error reading attestation file: %v ❌ ", err)
+					return
+				}
+
+				switch attestationType {
+				case SNP:
+					result, err = attesationToJSON(result)
+				case VTPM, SNPvTPM:
+					marshalOptions := prototext.MarshalOptions{
+						Multiline: true,
+						EmitASCII: true,
+					}
+					var attvTPM tpmAttest.Attestation
+					err = proto.Unmarshal(result, &attvTPM)
+					if err != nil {
+						printError(cmd, "failed to unmarshal the attestation report: %v ❌ ", ErrBadAttestation)
+					}
+
+					result = []byte(marshalOptions.Format(&attvTPM))
+				}
+
+				if err != nil {
+					printError(cmd, "Error converting attestation to textproto: %v ❌ ", err)
+					return
+				}
+
+				if err := os.WriteFile(filename, result, 0o644); err != nil {
+					printError(cmd, "Error writing attestation file: %v ❌ ", err)
+					return
+				}
+			}
+
+			cmd.Println("Attestation result retrieved and saved successfully!")
 		},
 	}
+
+	cmd.Flags().BoolVarP(&getTextProtoAttestation, "textproto", "p", false, "Get attestation in textproto format")
+	cmd.Flags().BytesHexVarP(&teeNonce, "tee", "e", []byte{}, "Define the nonce for the SNP attestation report (must be used with attestation type snp and snp-vtpm)")
+	cmd.Flags().BytesHexVarP(&nonce, "vtpm", "t", []byte{}, "Define the nonce for the vTPM attestation report (must be used with attestation type vtpm and snp-vtpm)")
+
+	return cmd
+}
+
+func attesationToJSON(report []byte) ([]byte, error) {
+	if len(report) < abi.ReportSize {
+		return nil, errors.Wrap(errReportSize, fmt.Errorf("attestation contents too small (0x%x bytes). Want at least 0x%x bytes", len(report), abi.ReportSize))
+	}
+	attestationPB, err := abi.ReportCertsToProto(report[:abi.ReportSize])
+	if err != nil {
+		return nil, err
+	}
+
+	return json.MarshalIndent(attestationPB, "", "	")
+}
+
+func attesationFromJSON(reportFile []byte) ([]byte, error) {
+	var attestationPB sevsnp.Attestation
+	if err := json.Unmarshal(reportFile, &attestationPB); err != nil {
+		return nil, err
+	}
+
+	return report.Transform(&attestationPB, "bin")
+}
+
+func isFileJSON(filename string) bool {
+	return strings.HasSuffix(filename, ".json")
 }
 
 func (cli *CLI) NewValidateAttestationValidationCmd() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:     "validate",
-		Short:   "Validate and verify attestation information. The report is provided as a file path.",
-		Example: "validate <attestation_report_file_path>",
-		Args:    cobra.ExactArgs(1),
-		Run: func(cmd *cobra.Command, args []string) {
-			log.Println("Checking attestation")
+		Use:   "validate",
+		Short: "Validate and verify attestation information. You can choose from 3 modes: snp,vtpm and snp-vtpm.Default mode is snp.",
+		Example: `Based on mode:
+		validate <attestationreportfilepath> --report_data <reportdata> --product <product data> //default
+		validate --mode snp <attestationreportfilepath> --report_data <reportdata> --product <product data>
+		validate --mode vtpm <attestationreportfilepath> --nonce <noncevalue> --format <formatvalue>  --output <outputvalue>
+		validate --mode snp-vtpm <attestationreportfilepath> --nonce <noncevalue> --format <formatvalue>  --output <outputvalue>`,
 
-			attestationFile = string(args[0])
-
-			if err := parseConfig(); err != nil {
-				log.Fatalf("attestation validation and verification failed with error: %s", err)
-			}
-			if err := parseHashes(); err != nil {
-				log.Fatalf("attestation validation and verification failed with error: %s", err)
-			}
-			if err := parseFiles(); err != nil {
-				log.Fatalf("attestation validation and verification failed with error: %s", err)
-			}
-			// This format is the attestation report in AMD's specified ABI format, immediately
-			// followed by the certificate table bytes.
-			if len(attestation) < abi.ReportSize {
-				log.Fatalf("attestation contents too small (0x%x bytes). Want at least 0x%x bytes", len(attestation), abi.ReportSize)
-			}
-			if err := parseUints(); err != nil {
-				log.Fatalf("attestation validation and verification failed with error: %s", err)
-			}
-			cfg.Policy.Vmpl = wrapperspb.UInt32(0)
-
-			if err := validateInput(); err != nil {
-				log.Fatalf("attestation validation and verification failed with error: %s", err)
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			mode, _ := cmd.Flags().GetString("mode")
+			if len(args) != 1 {
+				return fmt.Errorf("please pass the attestation report file path")
 			}
 
-			if err := verifyAndValidateAttestation(attestation); err != nil {
-				log.Fatalf("attestation validation and verification failed with error: %s", err)
+			// Validate flags based on the mode
+			switch mode {
+			case "snp":
+				if err := cmd.MarkFlagRequired("report_data"); err != nil {
+					return fmt.Errorf("failed to mark 'report_data' as required for SEV-SNP mode: %v", err)
+				}
+				if err := cmd.MarkFlagRequired("product"); err != nil {
+					return fmt.Errorf("failed to mark flag as required: %v ❌ ", err)
+				}
+			case "snp-vtpm":
+				if err := cmd.MarkFlagRequired("nonce"); err != nil {
+					return fmt.Errorf("failed to mark 'nonce' as required for vTPM mode: %v", err)
+				}
+				if err := cmd.MarkFlagRequired("format"); err != nil {
+					return fmt.Errorf("failed to mark 'format' as required for vTPM mode: %v", err)
+				}
+				if err := cmd.MarkFlagRequired("output"); err != nil {
+					return fmt.Errorf("failed to mark 'output' as required for vTPM mode: %v", err)
+				}
+
+			case "vtpm":
+				if err := cmd.MarkFlagRequired("nonce"); err != nil {
+					return fmt.Errorf("failed to mark 'nonce' as required for vTPM mode: %v", err)
+				}
+				if err := cmd.MarkFlagRequired("format"); err != nil {
+					return fmt.Errorf("failed to mark 'format' as required for vTPM mode: %v", err)
+				}
+				if err := cmd.MarkFlagRequired("output"); err != nil {
+					return fmt.Errorf("failed to mark 'output' as required for vTPM mode: %v", err)
+				}
+			default:
+				return fmt.Errorf("unknown mode: %s", mode)
 			}
-			log.Println("Attestation validation and verification is successful!")
+			return nil
 		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			mode, _ := cmd.Flags().GetString("mode")
+			switch mode {
+			case "snp":
+				return sevsnpverify(cmd, args)
+			case "snp-vtpm":
+				return vtpmSevSnpverify(args)
+			case "vtpm":
+				return vtpmverify(args)
+			default:
+				return fmt.Errorf("unknown mode: %s", mode)
+			}
+		},
+		SilenceUsage:  true,
+		SilenceErrors: true,
 	}
+	cmd.Flags().StringVar(
+		&mode,
+		"mode",
+		"snp", // default mode
+		"The attestation validation mode. Example: sevsnp",
+	)
+
+	// VTPM FLAGS
+	cmd.Flags().BytesHexVar(
+		&nonce,
+		"nonce",
+		[]byte{},
+		"hex encoded nonce for vTPM attestation, cannot be empty",
+	)
+
+	cmd.Flags().StringVar(
+		&format,
+		"format",
+		"binarypb", // default value
+		"type of output file where attestation report stored <binarypb|textproto>",
+	)
+
+	cmd.Flags().StringVar(
+		&output,
+		"output",
+		"",
+		"output file",
+	)
+
+	cmd.Flags().BytesHexVar(
+		&teeNonce,
+		"tee-nonce",
+		[]byte{},
+		"hex encoded teenonce for hardware attestation, can be empty",
+	)
+
+	// SEV-SNP FLAGS
 	cmd.Flags().StringVar(
 		&cfgString,
 		"config",
@@ -393,68 +621,217 @@ func (cli *CLI) NewValidateAttestationValidationCmd() *cobra.Command {
 		"PEM format CA bundles for the AMD product. Combined with contents of cabundle_paths.",
 	)
 
-	if err := cmd.MarkFlagRequired("report_data"); err != nil {
-		log.Fatalf("Failed to mark flag as required: %s", err)
-	}
-
-	if err := cmd.MarkFlagRequired("product"); err != nil {
-		log.Fatalf("Failed to mark flag as required: %s", err)
-	}
-
 	return cmd
 }
 
-func verifyAndValidateAttestation(attestation []byte) error {
-	sopts, err := verify.RootOfTrustToOptions(cfg.RootOfTrust)
+func (cli *CLI) NewMeasureCmd(igvmBinaryPath string) *cobra.Command {
+	igvmmeasureCmd := &cobra.Command{
+		Use:   "igvmmeasure <INPUT>",
+		Short: "Measure an IGVM file",
+		Long: `igvmmeasure measures an IGVM file and outputs the calculated measurement.
+			It ensures integrity verification for the IGVM file.`,
+
+		Args: cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if len(args) == 0 {
+				return fmt.Errorf("error: No input file provided")
+			}
+
+			inputFile := args[0]
+
+			return cli.measurement.Run(inputFile)
+		},
+	}
+
+	return igvmmeasureCmd
+}
+
+func sevsnpverify(cmd *cobra.Command, args []string) error {
+	cmd.Println("Checking attestation")
+
+	attestationFile = string(args[0])
+
+	if err := parseConfig(); err != nil {
+		return fmt.Errorf("error parsing config: %v ❌ ", err)
+	}
+	if err := parseHashes(); err != nil {
+		return fmt.Errorf("error parsing hashes: %v ❌ ", err)
+	}
+	if err := parseFiles(); err != nil {
+		return fmt.Errorf("error parsing files: %v ❌ ", err)
+	}
+	// This format is the attestation report in AMD's specified ABI format, immediately
+	// followed by the certificate table bytes.
+	if len(attestation) < abi.ReportSize {
+		return fmt.Errorf("attestation too small: got 0x%x bytes, need at least 0x%x bytes", len(attestation), abi.ReportSize)
+	}
+	if err := parseUints(); err != nil {
+		return fmt.Errorf("error parsing uints: %v ❌ ", err)
+	}
+	cfg.Policy.Vmpl = wrapperspb.UInt32(0)
+
+	if err := validateInput(); err != nil {
+		return fmt.Errorf("error validating input: %v ❌ ", err)
+	}
+
+	attestationPB, err := abi.ReportCertsToProto(attestation)
 	if err != nil {
-		return err
+		return fmt.Errorf("failed to convert attestation bytes to struct %v ❌ ", err)
 	}
 
-	if cfg.Policy.Product == nil {
-		productName := sevsnp.SevProduct_SEV_PRODUCT_UNKNOWN
-		switch cfg.RootOfTrust.ProductLine {
-		case sevProductNameMilan:
-			productName = sevsnp.SevProduct_SEV_PRODUCT_MILAN
-		case sevProductNameGenoa:
-			productName = sevsnp.SevProduct_SEV_PRODUCT_GENOA
-		default:
-		}
-
-		if productName == sevsnp.SevProduct_SEV_PRODUCT_UNKNOWN {
-			return fmt.Errorf("product name must be %s or %s", sevProductNameMilan, sevProductNameGenoa)
-		}
-
-		sopts.Product = &sevsnp.SevProduct{
-			Name: productName,
-		}
-	} else {
-		sopts.Product = cfg.Policy.Product
-	}
-
-	sopts.Getter = &trust.RetryHTTPSGetter{
-		Timeout:       timeout,
-		MaxRetryDelay: maxRetryDelay,
-		Getter:        &trust.SimpleHTTPSGetter{},
-	}
-
-	// Only take the attestation report and ignore everything else.
-	attestationPB, err := abi.ReportCertsToProto(attestation[:abi.ReportSize])
-	if err != nil {
-		return err
-	}
-	if err = verify.SnpAttestation(attestationPB, sopts); err != nil {
-		return err
-	}
-	opts, err := validate.PolicyToOptions(cfg.Policy)
-	if err != nil {
-		return err
-	}
-	if err = validate.SnpAttestation(attestationPB, opts); err != nil {
-		return err
+	if err := quoteprovider.VerifyAndValidate(attestationPB, &cfg); err != nil {
+		return fmt.Errorf("attestation validation and verification failed with error: %v ❌ ", err)
 	}
+	cmd.Println("Attestation validation and verification is successful!")
 	return nil
 }
 
+func vtpmSevSnpverify(args []string) error {
+	tpmAttestationFile = string(args[0])
+	input, err := openInputFile()
+	if err != nil {
+		return err
+	}
+	if closer, ok := input.(*os.File); ok {
+		defer closer.Close()
+	}
+	attestationBytes, err := io.ReadAll(input)
+	if err != nil {
+		return err
+	}
+	attestation := &tpmAttest.Attestation{}
+
+	if format == FormatBinaryPB {
+		err = proto.Unmarshal(attestationBytes, attestation)
+	} else if format == FormatTextProto {
+		err = unmarshalOptions.Unmarshal(attestationBytes, attestation)
+	} else {
+		return fmt.Errorf("format should be either binarypb or textproto")
+	}
+	if err != nil {
+		return fmt.Errorf("fail to unmarshal attestation report: %v", err)
+	}
+
+	pub, err := tpm2.DecodePublic(attestation.GetAkPub())
+	if err != nil {
+		return err
+	}
+	cryptoPub, err := pub.Key()
+	if err != nil {
+		return err
+	}
+
+	var validateOpts interface{}
+	switch attestation.GetTeeAttestation().(type) {
+	case *tpmAttest.Attestation_SevSnpAttestation:
+		if len(teeNonce) != 0 {
+			validateOpts = &server.VerifySnpOpts{
+				Validation:   server.SevSnpDefaultValidateOpts(teeNonce),
+				Verification: &sevVerify.Options{},
+			}
+		} else {
+			validateOpts = &server.VerifySnpOpts{
+				Validation:   server.SevSnpDefaultValidateOpts(nonce),
+				Verification: &sevVerify.Options{},
+			}
+		}
+	default:
+		validateOpts = nil
+	}
+
+	ms, err := server.VerifyAttestation(attestation, server.VerifyOpts{Nonce: nonce, TrustedAKs: []crypto.PublicKey{cryptoPub}, TEEOpts: validateOpts})
+	if err != nil {
+		return fmt.Errorf("verifying attestation: %w", err)
+	}
+	out, err := marshalOptions.Marshal(ms)
+	if err != nil {
+		return nil
+	}
+	output, err := createOutputFile()
+	if err != nil {
+		return err
+	}
+	if closer, ok := output.(*os.File); ok {
+		defer closer.Close()
+	}
+	if _, err := output.Write(out); err != nil {
+		return fmt.Errorf("failed to write verified attestation report: %v", err)
+	}
+
+	return nil
+}
+
+func vtpmverify(args []string) error {
+	tpmAttestationFile = string(args[0])
+	input, err := openInputFile()
+	if err != nil {
+		return err
+	}
+	if closer, ok := input.(*os.File); ok {
+		defer closer.Close()
+	}
+	attestationBytes, err := io.ReadAll(input)
+	if err != nil {
+		return err
+	}
+	attestation := &tpmAttest.Attestation{}
+
+	if format == FormatBinaryPB {
+		err = proto.Unmarshal(attestationBytes, attestation)
+	} else if format == FormatTextProto {
+		err = unmarshalOptions.Unmarshal(attestationBytes, attestation)
+	} else {
+		return fmt.Errorf("format should be either binarypb or textproto")
+	}
+	if err != nil {
+		return fmt.Errorf("fail to unmarshal attestation report: %v", err)
+	}
+
+	pub, err := tpm2.DecodePublic(attestation.GetAkPub())
+	if err != nil {
+		return err
+	}
+	cryptoPub, err := pub.Key()
+	if err != nil {
+		return err
+	}
+
+	ms, err := server.VerifyAttestation(attestation, server.VerifyOpts{Nonce: nonce, TrustedAKs: []crypto.PublicKey{cryptoPub}, TEEOpts: nil})
+	if err != nil {
+		return nil
+	}
+	out, err := marshalOptions.Marshal(ms)
+	if err != nil {
+		return nil
+	}
+	output, err := createOutputFile()
+	if err != nil {
+		return err
+	}
+	if closer, ok := output.(*os.File); ok {
+		defer closer.Close()
+	}
+	if _, err := output.Write(out); err != nil {
+		return fmt.Errorf("failed to write verified attestation report: %v", err)
+	}
+
+	return nil
+}
+
+func openInputFile() (io.Reader, error) {
+	if tpmAttestationFile == "" {
+		return nil, errEmptyFile
+	}
+	return os.Open(tpmAttestationFile)
+}
+
+func createOutputFile() (io.Writer, error) {
+	if output == "" {
+		return os.Stdout, nil
+	}
+	return os.Create(output)
+}
+
 // parseConfig decodes config passed as json for check.Config struct.
 // example
 /* {
@@ -549,6 +926,13 @@ func parseFiles() error {
 		return err
 	}
 	attestation = file
+	if isFileJSON(attestationFile) {
+		attestation, err = attesationFromJSON(attestation)
+		if err != nil {
+			return err
+		}
+	}
+
 	for _, path := range trustedAuthorKeys {
 		file, err := os.ReadFile(path)
 		if err != nil {
@@ -614,7 +998,7 @@ func getBase(val string) int {
 }
 
 func validateInput() error {
-	if len(cfg.RootOfTrust.CabundlePaths) != 0 || len(cfg.RootOfTrust.Cabundles) != 0 && cfg.RootOfTrust.Product == "" {
+	if len(cfg.RootOfTrust.CabundlePaths) != 0 || len(cfg.RootOfTrust.Cabundles) != 0 && cfg.RootOfTrust.ProductLine == "" {
 		return fmt.Errorf("product name must be set if CA bundles are provided")
 	}
 

cli/attestation_policy.go

@@ -4,15 +4,14 @@ package cli
 
 import (
 	"encoding/base64"
-	"encoding/json"
 	"fmt"
-	"log"
 	"os"
 
 	"github.com/absmach/magistrala/pkg/errors"
 	"github.com/google/go-sev-guest/proto/check"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
+	"google.golang.org/protobuf/encoding/protojson"
 )
 
 type fieldType int
@@ -31,26 +30,21 @@ const (
 )
 
 var (
-	errDecode                 = errors.New("base64 string could not be decoded")
-	errDataLength             = errors.New("data does not have an adequate length")
-	errReadingBackendInfoFile = errors.New("error while reading the backend information file")
-	errUnmarshalJSON          = errors.New("failed to unmarshal json")
-	errMarshalJSON            = errors.New("failed to marshal json")
-	errWriteFile              = errors.New("failed to write to file")
-	errBackendField           = errors.New("the specified field type does not exist in the backend information")
+	errDecode                       = errors.New("base64 string could not be decoded")
+	errDataLength                   = errors.New("data does not have an adequate length")
+	errReadingAttestationPolicyFile = errors.New("error while reading the attestation policy file")
+	errUnmarshalJSON                = errors.New("failed to unmarshal json")
+	errMarshalJSON                  = errors.New("failed to marshal json")
+	errWriteFile                    = errors.New("failed to write to file")
+	errAttestationPolicyField       = errors.New("the specified field type does not exist in the attestation policy")
 )
 
-type AttestationConfiguration struct {
-	SNPPolicy   *check.Policy      `json:"snp_policy,omitempty"`
-	RootOfTrust *check.RootOfTrust `json:"root_of_trust,omitempty"`
-}
-
-func (cli *CLI) NewBackendCmd() *cobra.Command {
+func (cli *CLI) NewAttestationPolicyCmd() *cobra.Command {
 	return &cobra.Command{
-		Use:   "backend [command]",
-		Short: "Change backend information",
+		Use:   "policy [command]",
+		Short: "Change attestation policy",
 		Run: func(cmd *cobra.Command, args []string) {
-			fmt.Printf("Change backend information\n\n")
+			fmt.Printf("Change attestation policy\n\n")
 			fmt.Printf("Usage:\n  %s [command]\n\n", cmd.CommandPath())
 			fmt.Printf("Available Commands:\n")
 
@@ -78,12 +72,13 @@ func (cli *CLI) NewBackendCmd() *cobra.Command {
 func (cli *CLI) NewAddMeasurementCmd() *cobra.Command {
 	return &cobra.Command{
 		Use:     "measurement",
-		Short:   "Add measurement to the backend info file. The value should be in base64. The second parameter is backend_info.json file",
-		Example: "measurement <measurement> <backend_info.json>",
+		Short:   "Add measurement to the attestation policy file. The value should be in base64. The second parameter is attestation_policy.json file",
+		Example: "measurement <measurement> <attestation_policy.json>",
 		Args:    cobra.ExactArgs(2),
 		Run: func(cmd *cobra.Command, args []string) {
 			if err := changeAttestationConfiguration(args[1], args[0], measurementLength, measurementField); err != nil {
-				log.Fatalf("Error could not change measurement data %v", err)
+				printError(cmd, "Error could not change measurement data: %v ❌ ", err)
+				return
 			}
 		},
 	}
@@ -92,12 +87,13 @@ func (cli *CLI) NewAddMeasurementCmd() *cobra.Command {
 func (cli *CLI) NewAddHostDataCmd() *cobra.Command {
 	return &cobra.Command{
 		Use:     "hostdata",
-		Short:   "Add host data to the backend info file. The value should be in base64. The second parameter is backend_info.json file",
-		Example: "hostdata <host-data> <backend_info.json>",
+		Short:   "Add host data to the attestation policy file. The value should be in base64. The second parameter is attestation_policy.json file",
+		Example: "hostdata <host-data> <attestation_policy.json>",
 		Args:    cobra.ExactArgs(2),
 		Run: func(cmd *cobra.Command, args []string) {
 			if err := changeAttestationConfiguration(args[1], args[0], hostDataLength, hostDataField); err != nil {
-				log.Fatalf("Error could not change host data %v", err)
+				printError(cmd, "Error could not change host data: %v ❌ ", err)
+				return
 			}
 		},
 	}
@@ -113,27 +109,27 @@ func changeAttestationConfiguration(fileName, base64Data string, expectedLength
 		return errDataLength
 	}
 
-	ac := AttestationConfiguration{}
+	ac := check.Config{Policy: &check.Policy{}, RootOfTrust: &check.RootOfTrust{}}
 
-	backendInfo, err := os.ReadFile(fileName)
+	attestationPolicy, err := os.ReadFile(fileName)
 	if err != nil {
-		return errors.Wrap(errReadingBackendInfoFile, err)
+		return errors.Wrap(errReadingAttestationPolicyFile, err)
 	}
 
-	if err = json.Unmarshal(backendInfo, &ac); err != nil {
+	if err = protojson.Unmarshal(attestationPolicy, &ac); err != nil {
 		return errors.Wrap(errUnmarshalJSON, err)
 	}
 
 	switch field {
 	case measurementField:
-		ac.SNPPolicy.Measurement = data
+		ac.Policy.Measurement = data
 	case hostDataField:
-		ac.SNPPolicy.HostData = data
+		ac.Policy.HostData = data
 	default:
-		return errBackendField
+		return errAttestationPolicyField
 	}
 
-	fileJson, err := json.MarshalIndent(ac, "", " ")
+	fileJson, err := protojson.Marshal(&ac)
 	if err != nil {
 		return errors.Wrap(errMarshalJSON, err)
 	}

cli/attestation_policy_test.go

@@ -0,0 +1,131 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"encoding/base64"
+	"os"
+	"testing"
+
+	"github.com/google/go-sev-guest/proto/check"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"google.golang.org/protobuf/encoding/protojson"
+)
+
+func TestChangeAttestationConfiguration(t *testing.T) {
+	tmpfile, err := os.CreateTemp("", "attestation_policy.json")
+	require.NoError(t, err)
+	defer os.Remove(tmpfile.Name())
+
+	initialConfig := check.Config{Policy: &check.Policy{}, RootOfTrust: &check.RootOfTrust{}}
+
+	initialJSON, err := protojson.Marshal(&initialConfig)
+	require.NoError(t, err)
+	err = os.WriteFile(tmpfile.Name(), initialJSON, 0o644)
+	require.NoError(t, err)
+
+	tests := []struct {
+		name           string
+		base64Data     string
+		expectedLength int
+		field          fieldType
+		expectError    bool
+		errorType      error
+	}{
+		{
+			name:           "Valid Measurement",
+			base64Data:     base64.StdEncoding.EncodeToString(make([]byte, measurementLength)),
+			expectedLength: measurementLength,
+			field:          measurementField,
+			expectError:    false,
+		},
+		{
+			name:           "Valid Host Data",
+			base64Data:     base64.StdEncoding.EncodeToString(make([]byte, hostDataLength)),
+			expectedLength: hostDataLength,
+			field:          hostDataField,
+			expectError:    false,
+		},
+		{
+			name:           "Invalid Base64",
+			base64Data:     "Invalid Base64",
+			expectedLength: measurementLength,
+			field:          measurementField,
+			expectError:    true,
+			errorType:      errDecode,
+		},
+		{
+			name:           "Invalid Data Length",
+			base64Data:     base64.StdEncoding.EncodeToString(make([]byte, measurementLength-1)),
+			expectedLength: measurementLength,
+			field:          measurementField,
+			expectError:    true,
+			errorType:      errDataLength,
+		},
+		{
+			name:           "Invalid Field Type",
+			base64Data:     base64.StdEncoding.EncodeToString(make([]byte, measurementLength)),
+			expectedLength: measurementLength,
+			field:          fieldType(999),
+			expectError:    true,
+			errorType:      errAttestationPolicyField,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := changeAttestationConfiguration(tmpfile.Name(), tt.base64Data, tt.expectedLength, tt.field)
+
+			if tt.expectError {
+				assert.Error(t, err)
+				assert.ErrorIs(t, err, tt.errorType)
+			} else {
+				assert.NoError(t, err)
+
+				content, err := os.ReadFile(tmpfile.Name())
+				require.NoError(t, err)
+
+				config := check.Config{Policy: &check.Policy{}, RootOfTrust: &check.RootOfTrust{}}
+				err = protojson.Unmarshal(content, &config)
+				require.NoError(t, err)
+
+				decodedData, _ := base64.StdEncoding.DecodeString(tt.base64Data)
+				if tt.field == measurementField {
+					assert.Equal(t, decodedData, config.Policy.Measurement)
+				} else if tt.field == hostDataField {
+					assert.Equal(t, decodedData, config.Policy.HostData)
+				}
+			}
+		})
+	}
+}
+
+func TestNewAttestationPolicyCmd(t *testing.T) {
+	cli := &CLI{}
+	cmd := cli.NewAttestationPolicyCmd()
+
+	assert.Equal(t, "policy [command]", cmd.Use)
+	assert.Equal(t, "Change attestation policy", cmd.Short)
+	assert.NotNil(t, cmd.Run)
+}
+
+func TestNewAddMeasurementCmd(t *testing.T) {
+	cli := &CLI{}
+	cmd := cli.NewAddMeasurementCmd()
+
+	assert.Equal(t, "measurement", cmd.Use)
+	assert.Equal(t, "Add measurement to the attestation policy file. The value should be in base64. The second parameter is attestation_policy.json file", cmd.Short)
+	assert.Equal(t, "measurement <measurement> <attestation_policy.json>", cmd.Example)
+	assert.NotNil(t, cmd.Run)
+}
+
+func TestNewAddHostDataCmd(t *testing.T) {
+	cli := &CLI{}
+	cmd := cli.NewAddHostDataCmd()
+
+	assert.Equal(t, "hostdata", cmd.Use)
+	assert.Equal(t, "Add host data to the attestation policy file. The value should be in base64. The second parameter is attestation_policy.json file", cmd.Short)
+	assert.Equal(t, "hostdata <host-data> <attestation_policy.json>", cmd.Example)
+	assert.NotNil(t, cmd.Run)
+}

cli/attestation_test.go

@@ -0,0 +1,626 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"bytes"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/absmach/magistrala/pkg/errors"
+	"github.com/google/go-sev-guest/abi"
+	"github.com/google/go-sev-guest/proto/check"
+	"github.com/google/go-sev-guest/proto/sevsnp"
+	"github.com/spf13/cobra"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/vtpm"
+	"github.com/ultravioletrs/cocos/pkg/sdk/mocks"
+)
+
+func TestNewAttestationCmd(t *testing.T) {
+	mockSDK := new(mocks.SDK)
+	cli := &CLI{agentSDK: mockSDK}
+	cmd := cli.NewAttestationCmd()
+
+	assert.Equal(t, "attestation [command]", cmd.Use)
+	assert.Equal(t, "Get and validate attestations", cmd.Short)
+
+	var buf bytes.Buffer
+	cmd.SetOut(&buf)
+
+	reportData := bytes.Repeat([]byte{0x01}, quoteprovider.Nonce)
+	mockSDK.On("Attestation", mock.Anything, [quoteprovider.Nonce]byte(reportData), mock.Anything).Return(nil)
+
+	cmd.SetArgs([]string{hex.EncodeToString(reportData)})
+	err := cmd.Execute()
+	assert.NoError(t, err)
+	assert.Contains(t, buf.String(), "Get and validate attestations")
+}
+
+func TestNewGetAttestationCmd(t *testing.T) {
+	validattestation, err := os.ReadFile("../attestation.bin")
+	require.NoError(t, err)
+
+	teeNonce := hex.EncodeToString(bytes.Repeat([]byte{0x00}, quoteprovider.Nonce))
+	vtpmNonce := hex.EncodeToString(bytes.Repeat([]byte{0x00}, vtpm.Nonce))
+
+	testCases := []struct {
+		name         string
+		args         []string
+		mockResponse []byte
+		mockError    error
+		expectedErr  string
+		expectedOut  string
+	}{
+		{
+			name:         "successful SNP attestation retrieval",
+			args:         []string{"snp", "--tee", teeNonce},
+			mockResponse: []byte("mock attestation"),
+			mockError:    nil,
+			expectedOut:  "Attestation result retrieved and saved successfully!",
+		},
+		{
+			name:         "successful vTPM attestation retrieval",
+			args:         []string{"vtpm", "--vtpm", vtpmNonce},
+			mockResponse: []byte("mock attestation"),
+			mockError:    nil,
+			expectedOut:  "Attestation result retrieved and saved successfully!",
+		},
+		{
+			name:         "successful SNP-vTPM attestation retrieval",
+			args:         []string{"snp-vtpm", "--tee", teeNonce, "--vtpm", vtpmNonce},
+			mockResponse: []byte("mock attestation"),
+			mockError:    nil,
+			expectedOut:  "Attestation result retrieved and saved successfully!",
+		},
+		{
+			name:         "missing vTPM nonce",
+			args:         []string{"snp-vtpm", "--tee", teeNonce},
+			mockResponse: []byte("mock attestation"),
+			mockError:    nil,
+			expectedOut:  "vTPM nonce must be defined for vTPM attestation",
+		},
+		{
+			name:         "missing TEE nonce",
+			args:         []string{"snp-vtpm", "--vtpm", vtpmNonce},
+			mockResponse: []byte("mock attestation"),
+			mockError:    nil,
+			expectedOut:  "TEE nonce must be defined for SEV-SNP attestation",
+		},
+		{
+			name:         "invalid report data size",
+			args:         []string{"snp", "--tee", hex.EncodeToString(bytes.Repeat([]byte{0x00}, 65))},
+			mockResponse: nil,
+			mockError:    errors.New("error"),
+			expectedErr:  "nonce must be a hex encoded string of length lesser or equal 64 bytes",
+		},
+		{
+			name:         "invalid vTPM data size",
+			args:         []string{"vtpm", "-t", hex.EncodeToString(bytes.Repeat([]byte{0x00}, 33))},
+			mockResponse: nil,
+			mockError:    errors.New("error"),
+			expectedErr:  "vTPM nonce must be a hex encoded string of length lesser or equal 32 bytes",
+		},
+		{
+			name:         "invalid arguments",
+			args:         []string{"invalid"},
+			mockResponse: nil,
+			mockError:    errors.New("error"),
+			expectedErr:  "Bad attestation type: invalid argument ",
+		},
+		{
+			name:         "failed to get attestation",
+			args:         []string{"snp", "-e", teeNonce},
+			mockResponse: nil,
+			mockError:    errors.New("error"),
+			expectedErr:  "Failed to get attestation due to error",
+		},
+		{
+			name:         "Textproto report error",
+			args:         []string{"snp", "-e", teeNonce, "--textproto"},
+			mockResponse: []byte("mock attestation"),
+			mockError:    nil,
+			expectedErr:  "Error converting attestation to textproto",
+		},
+		{
+			name:         "successful Textproto report",
+			args:         []string{"snp", "-e", teeNonce, "--textproto"},
+			mockResponse: validattestation,
+			mockError:    nil,
+			expectedOut:  "Attestation result retrieved and saved successfully!",
+		},
+		{
+			name:         "connection error",
+			args:         []string{"snp", "-e", teeNonce},
+			mockResponse: nil,
+			mockError:    errors.New("failed to connect to agent"),
+			expectedErr:  "Failed to connect to agent",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Cleanup(func() {
+				os.Remove(attestationFilePath)
+				os.Remove(attestationJson)
+			})
+			mockSDK := new(mocks.SDK)
+			cli := &CLI{agentSDK: mockSDK}
+			if tc.name == "connection error" {
+				cli.connectErr = errors.New("failed to connect to agent")
+			}
+			cmd := cli.NewGetAttestationCmd()
+			var buf bytes.Buffer
+			cmd.SetOut(&buf)
+
+			mockSDK.On("Attestation", mock.Anything, [quoteprovider.Nonce]byte(bytes.Repeat([]byte{0x00}, quoteprovider.Nonce)), [vtpm.Nonce]byte(bytes.Repeat([]byte{0x00}, vtpm.Nonce)), mock.Anything, mock.Anything).Return(tc.mockError).Run(func(args mock.Arguments) {
+				_, err := args.Get(4).(*os.File).Write(tc.mockResponse)
+				require.NoError(t, err)
+			})
+
+			cmd.SetArgs(tc.args)
+			err := cmd.Execute()
+
+			if tc.expectedErr != "" {
+				assert.Contains(t, buf.String(), tc.expectedErr)
+			} else {
+				assert.NoError(t, err)
+				assert.Contains(t, buf.String(), tc.expectedOut)
+			}
+		})
+	}
+}
+
+func TestNewValidateAttestationValidationCmdDefaults(t *testing.T) {
+	cli := &CLI{}
+	cmd := cli.NewValidateAttestationValidationCmd()
+
+	assert.Equal(t, "validate", cmd.Use)
+	assert.Equal(t, "Validate and verify attestation information. You can choose from 3 modes: snp,vtpm and snp-vtpm.Default mode is snp.", cmd.Short)
+
+	assert.Equal(t, fmt.Sprint(defaultMinimumTcb), cmd.Flag("minimum_tcb").Value.String())
+	assert.Equal(t, fmt.Sprint(defaultMinimumLaunchTcb), cmd.Flag("minimum_lauch_tcb").Value.String())
+	assert.Equal(t, fmt.Sprint(defaultGuestPolicy), cmd.Flag("guest_policy").Value.String())
+	assert.Equal(t, fmt.Sprint(defaultMinimumGuestSvn), cmd.Flag("minimum_guest_svn").Value.String())
+	assert.Equal(t, fmt.Sprint(defaultMinimumBuild), cmd.Flag("minimum_build").Value.String())
+	assert.Equal(t, defaultCheckCrl, cmd.Flag("check_crl").Value.String() == "true")
+	assert.Equal(t, fmt.Sprint(defaultTimeout), cmd.Flag("timeout").Value.String())
+	assert.Equal(t, fmt.Sprint(defaultMaxRetryDelay), cmd.Flag("max_retry_delay").Value.String())
+}
+
+func TestNewValidateAttestationValidationCmd(t *testing.T) {
+	cli := &CLI{}
+	cmd := cli.NewValidateAttestationValidationCmd()
+
+	t.Run("missing attestation report file path", func(t *testing.T) {
+		err := cmd.Execute()
+		assert.Error(t, err)
+		assert.Equal(t, "please pass the attestation report file path", err.Error())
+	})
+
+	t.Run("unknown mode", func(t *testing.T) {
+		cmd.SetArgs([]string{attestationFilePath, "--mode=invalid"})
+		err := cmd.Execute()
+		assert.Error(t, err)
+		assert.Contains(t, err.Error(), "unknown mode")
+	})
+
+	t.Run("snp mode with missing flags", func(t *testing.T) {
+		cmd.SetArgs([]string{attestationFilePath, "--mode=snp"})
+		err := cmd.Execute()
+		assert.Error(t, err)
+		assert.Contains(t, err.Error(), "required flag(s) \"product\", \"report_data\" not set")
+	})
+
+	t.Run("vtpm mode with missing flags", func(t *testing.T) {
+		cmd.SetArgs([]string{vtpmFilePath, "--mode=vtpm"})
+		err := cmd.Execute()
+		assert.Error(t, err)
+		assert.Contains(t, err.Error(), "required flag(s) \"format\", \"nonce\", \"output\", \"product\", \"report_data\" not set")
+	})
+
+	t.Run("snp-vtpm mode with missing flags", func(t *testing.T) {
+		cmd.SetArgs([]string{vtpmFilePath, "--mode=snp-vtpm"})
+		err := cmd.Execute()
+		assert.Error(t, err)
+		assert.Contains(t, err.Error(), "required flag(s) \"format\", \"nonce\", \"output\", \"product\", \"report_data\" not set")
+	})
+
+	t.Run("valid snp mode execution", func(t *testing.T) {
+		cli := CLI{}
+		cmd := cli.NewValidateAttestationValidationCmd()
+
+		cmd.RunE = func(_ *cobra.Command, _ []string) error {
+			t.Log("Mock RunE executed instead of sevsnpverify")
+			return nil
+		}
+
+		cmd.SetArgs([]string{
+			"../attestation.bin",
+			"--mode=snp",
+			"--report_data=" +
+				"11223344556677889900aabbccddeeff11223344556677889900aabbccddeeff" +
+				"11223344556677889900aabbccddeeff11223344556677889900aabbccddeeff",
+			"--product=Milan",
+		})
+		err := cmd.PreRunE(cmd, []string{"../attestation.bin"})
+		assert.NoError(t, err)
+	})
+
+	t.Run("valid vtpm mode execution", func(t *testing.T) {
+		cli := CLI{}
+		cmd := cli.NewValidateAttestationValidationCmd()
+
+		cmd.RunE = func(_ *cobra.Command, _ []string) error {
+			t.Log("Mock RunE executed instead of vtpmverify")
+			return nil
+		}
+
+		cmd.SetArgs([]string{vtpmFilePath, "--mode=vtpm", "--nonce=123abc", "--format=binarypb", "--output=some_output"})
+
+		err := cmd.PreRunE(cmd, []string{"../quote.dat"})
+		assert.NoError(t, err)
+	})
+
+	t.Run("valid snp-vtpm mode execution", func(t *testing.T) {
+		cli := CLI{}
+		cmd := cli.NewValidateAttestationValidationCmd()
+
+		cmd.RunE = func(_ *cobra.Command, _ []string) error {
+			t.Log("Mock RunE executed instead of vtpmSevSnpverify")
+			return nil
+		}
+
+		cmd.SetArgs([]string{vtpmFilePath, "--mode=snp-vtpm", "--nonce=123abc", "--format=textproto", "--output=some_output"})
+		err := cmd.PreRunE(cmd, []string{"../quote.dat"})
+		assert.NoError(t, err)
+	})
+}
+
+type MockMeasurement struct {
+	mock.Mock
+}
+
+func (m *MockMeasurement) Run(igvmBinaryPath string) error {
+	args := m.Called(igvmBinaryPath)
+	return args.Error(0)
+}
+
+func (m *MockMeasurement) Stop() error {
+	args := m.Called()
+	return args.Error(0)
+}
+
+func TestNewMeasureCmd_RunSuccess(t *testing.T) {
+	cliInstance := &CLI{}
+	mockMeasurement := new(MockMeasurement)
+	cliInstance.measurement = mockMeasurement
+
+	mockMeasurement.On("Run", "testfile.igvm").Return(nil)
+
+	cmd := cliInstance.NewMeasureCmd("fake_binary_path")
+	buf := new(bytes.Buffer)
+	cmd.SetOut(buf)
+	cmd.SetErr(buf)
+	cmd.SetArgs([]string{"testfile.igvm"})
+
+	err := cmd.Execute()
+
+	assert.NoError(t, err)
+	mockMeasurement.AssertExpectations(t)
+}
+
+func TestNewMeasureCmd_RunError(t *testing.T) {
+	cliInstance := &CLI{}
+	mockMeasurement := new(MockMeasurement)
+	cliInstance.measurement = mockMeasurement
+	expectedError := errors.New("mocked measurement error")
+
+	mockMeasurement.On("Run", "testfile.igvm").Return(expectedError)
+
+	cmd := cliInstance.NewMeasureCmd("fake_binary_path")
+
+	buf := new(bytes.Buffer)
+	cmd.SetOut(buf)
+	cmd.SetErr(buf)
+	cmd.SetArgs([]string{"testfile.igvm"})
+
+	err := cmd.Execute()
+
+	assert.Error(t, err)
+	assert.Equal(t, expectedError.Error(), err.Error())
+	mockMeasurement.AssertExpectations(t)
+}
+
+func TestParseConfig(t *testing.T) {
+	cfgString = ""
+	err := parseConfig()
+	assert.NoError(t, err)
+	assert.NotNil(t, cfg.RootOfTrust)
+	assert.NotNil(t, cfg.Policy)
+
+	cfgString = `{"rootOfTrust":{"product":"test_product"},"policy":{"minimumGuestSvn":1}}`
+	err = parseConfig()
+	assert.NoError(t, err)
+	assert.Equal(t, "test_product", cfg.RootOfTrust.Product)
+	assert.Equal(t, uint32(1), cfg.Policy.MinimumGuestSvn)
+
+	cfgString = `{"invalid_json"`
+	err = parseConfig()
+	assert.Error(t, err)
+}
+
+func TestParseHashes(t *testing.T) {
+	trustedAuthorHashes = []string{"0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"}
+	trustedIdKeyHashes = []string{"fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210"}
+
+	cfg = check.Config{}
+	if cfg.Policy == nil {
+		cfg.Policy = &check.Policy{}
+	}
+
+	err := parseHashes()
+	assert.NoError(t, err)
+	assert.Len(t, cfg.Policy.TrustedAuthorKeyHashes, 1)
+	assert.Len(t, cfg.Policy.TrustedIdKeyHashes, 1)
+
+	trustedAuthorHashes = []string{"invalid_hash"}
+	err = parseHashes()
+	assert.Error(t, err)
+}
+
+func TestParseFiles(t *testing.T) {
+	attestationFile = "test_attestation.bin"
+	authorKeyFile := "test_author_key.pem"
+	idKeyFile := "test_id_key.pem"
+
+	err := os.WriteFile(attestationFile, []byte("test attestation"), 0o644)
+	assert.NoError(t, err)
+	err = os.WriteFile(authorKeyFile, []byte("test author key"), 0o644)
+	assert.NoError(t, err)
+	err = os.WriteFile(idKeyFile, []byte("test id key"), 0o644)
+	assert.NoError(t, err)
+
+	trustedAuthorKeys = []string{authorKeyFile}
+	trustedIdKeys = []string{idKeyFile}
+
+	err = parseFiles()
+	assert.NoError(t, err)
+	assert.Equal(t, []byte("test attestation"), attestation)
+	assert.Len(t, cfg.Policy.TrustedAuthorKeys, 1)
+	assert.Len(t, cfg.Policy.TrustedIdKeys, 1)
+
+	os.Remove(attestationFile)
+	os.Remove(authorKeyFile)
+	os.Remove(idKeyFile)
+
+	attestationFile = "non_existent_file.bin"
+	err = parseFiles()
+	assert.Error(t, err)
+}
+
+func TestParseUints(t *testing.T) {
+	stepping = "10"
+	platformInfo = "0xFF"
+
+	cfg = check.Config{}
+	if cfg.Policy == nil {
+		cfg.Policy = &check.Policy{
+			Product: &sevsnp.SevProduct{},
+		}
+	}
+	err := parseUints()
+	assert.NoError(t, err)
+	assert.Equal(t, uint32(10), cfg.Policy.Product.MachineStepping.Value)
+	assert.Equal(t, uint64(255), cfg.Policy.PlatformInfo.Value)
+
+	stepping = "invalid"
+	err = parseUints()
+	assert.Error(t, err)
+
+	stepping = "10"
+	platformInfo = "invalid"
+	err = parseUints()
+	assert.Error(t, err)
+}
+
+func TestValidateInput(t *testing.T) {
+	cfg = check.Config{}
+	if cfg.Policy == nil {
+		cfg.Policy = &check.Policy{}
+	}
+	if cfg.RootOfTrust == nil {
+		cfg.RootOfTrust = &check.RootOfTrust{}
+	}
+	cfg.Policy.ReportData = make([]byte, 64)
+	cfg.Policy.HostData = make([]byte, 32)
+	cfg.Policy.FamilyId = make([]byte, 16)
+	cfg.Policy.ImageId = make([]byte, 16)
+	cfg.Policy.ReportId = make([]byte, 32)
+	cfg.Policy.ReportIdMa = make([]byte, 32)
+	cfg.Policy.Measurement = make([]byte, 48)
+	cfg.Policy.ChipId = make([]byte, 64)
+
+	err := validateInput()
+	assert.NoError(t, err)
+
+	cfg.Policy.ReportData = make([]byte, 32)
+	err = validateInput()
+	assert.Error(t, err)
+}
+
+func TestGetBase(t *testing.T) {
+	assert.Equal(t, 16, getBase("0xFF"))
+	assert.Equal(t, 8, getBase("0o77"))
+	assert.Equal(t, 2, getBase("0b1010"))
+	assert.Equal(t, 10, getBase("123"))
+}
+
+func TestAttestationToJSON(t *testing.T) {
+	validReport, err := os.ReadFile("../attestation.bin")
+	require.NoError(t, err)
+	tests := []struct {
+		name  string
+		input []byte
+		err   error
+	}{
+		{
+			name:  "Valid report",
+			input: validReport,
+			err:   nil,
+		},
+		{
+			name:  "Invalid report size",
+			input: make([]byte, abi.ReportSize-1),
+			err:   errReportSize,
+		},
+		{
+			name:  "Nil input",
+			input: nil,
+			err:   errReportSize,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := attesationToJSON(tt.input)
+			assert.True(t, errors.Contains(err, tt.err))
+			if tt.err != nil {
+				assert.Nil(t, got)
+				return
+			}
+
+			require.NotNil(t, got)
+
+			var js map[string]interface{}
+			err = json.Unmarshal(got, &js)
+			assert.NoError(t, err)
+		})
+	}
+}
+
+func TestAttestationFromJSON(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    []byte
+		err      error
+		validate func(t *testing.T, output []byte)
+	}{
+		{
+			name: "Valid JSON",
+			input: func() []byte {
+				att := &sevsnp.Attestation{
+					Report: &sevsnp.Report{
+						CurrentTcb:      1,
+						FamilyId:        make([]byte, 16),
+						ImageId:         make([]byte, 16),
+						ReportData:      make([]byte, 64),
+						Measurement:     make([]byte, 48),
+						HostData:        make([]byte, 32),
+						IdKeyDigest:     make([]byte, 48),
+						AuthorKeyDigest: make([]byte, 48),
+						ReportId:        make([]byte, 32),
+						ReportIdMa:      make([]byte, 32),
+						ChipId:          make([]byte, 64),
+						Signature:       make([]byte, 512),
+					},
+				}
+				data, err := json.Marshal(att)
+				require.NoError(t, err)
+				return data
+			}(),
+			err: nil,
+			validate: func(t *testing.T, output []byte) {
+				assert.NotEmpty(t, output)
+			},
+		},
+		{
+			name:  "Invalid JSON",
+			input: []byte(`{"invalid": json`),
+			err:   errors.New("invalid character 'j' looking for beginning of value"),
+			validate: func(t *testing.T, output []byte) {
+				assert.Nil(t, output)
+			},
+		},
+		{
+			name:  "Empty input",
+			input: []byte{},
+			err:   errors.New("unexpected end of JSON input"),
+			validate: func(t *testing.T, output []byte) {
+				assert.Nil(t, output)
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := attesationFromJSON(tt.input)
+			assert.True(t, errors.Contains(err, tt.err))
+			tt.validate(t, got)
+		})
+	}
+}
+
+func TestIsFileJSON(t *testing.T) {
+	tests := []struct {
+		name     string
+		filename string
+		want     bool
+	}{
+		{
+			name:     "Valid JSON extension",
+			filename: "test.json",
+			want:     true,
+		},
+		{
+			name:     "Valid JSON extension with path",
+			filename: "/path/to/test.json",
+			want:     true,
+		},
+		{
+			name:     "Invalid extension",
+			filename: "test.txt",
+			want:     false,
+		},
+		{
+			name:     "No extension",
+			filename: "test",
+			want:     false,
+		},
+		{
+			name:     "JSON in filename",
+			filename: "json.txt",
+			want:     false,
+		},
+		{
+			name:     "Empty string",
+			filename: "",
+			want:     false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := isFileJSON(tt.filename)
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}
+
+func TestRoundTrip(t *testing.T) {
+	originalReport, err := os.ReadFile("../attestation.bin")
+	require.NoError(t, err)
+	jsonData, err := attesationToJSON(originalReport)
+	require.NoError(t, err)
+	require.NotNil(t, jsonData)
+
+	roundTripReport, err := attesationFromJSON(jsonData)
+	require.NoError(t, err)
+	require.NotNil(t, roundTripReport)
+}

cli/cache.go

@@ -3,15 +3,16 @@
 package cli
 
 import (
-	"log"
+	"fmt"
 	"os"
 	"path"
 
 	"github.com/google/go-sev-guest/abi"
 	"github.com/google/go-sev-guest/kds"
+	"github.com/google/go-sev-guest/proto/check"
 	"github.com/google/go-sev-guest/verify/trust"
 	"github.com/spf13/cobra"
-	"github.com/ultravioletrs/cocos/pkg/clients/grpc"
+	config "github.com/ultravioletrs/cocos/pkg/attestation"
 )
 
 const (
@@ -26,30 +27,38 @@ func (cli *CLI) NewCABundleCmd(fileSavePath string) *cobra.Command {
 		Example: "ca-bundle <path_to_platform_info_json>",
 		Args:    cobra.ExactArgs(1),
 		Run: func(cmd *cobra.Command, args []string) {
-			attestationConfiguration := grpc.AttestationConfiguration{}
-			err := grpc.ReadManifest(args[0], &attestationConfiguration)
+			attestationConfiguration := config.Config{SnpCheck: &check.Config{Policy: &check.Policy{}, RootOfTrust: &check.RootOfTrust{}}, PcrConfig: &config.PcrConfig{}}
+			err := config.ReadAttestationPolicy(args[0], &attestationConfiguration)
 			if err != nil {
-				log.Fatalf("Error while reading manifest: %v", err)
+				printError(cmd, "Error while reading manifest: %v ❌ ", err)
+				return
 			}
 
-			product := attestationConfiguration.RootOfTrust.Product
+			product := attestationConfiguration.SnpCheck.RootOfTrust.ProductLine
 
 			getter := trust.DefaultHTTPSGetter()
 			caURL := kds.ProductCertChainURL(abi.VcekReportSigner, product)
 
 			bundle, err := getter.Get(caURL)
 			if err != nil {
-				log.Fatalf("Error fetching ARK and ASK from AMD KDS for product: %s, error: %v", product, err)
+				message := fmt.Sprintf("Error fetching ARK and ASK from AMD KDS for product: %s", product)
+				message += ", error: %v ❌ "
+				printError(cmd, message, err)
+				return
 			}
 
 			err = os.MkdirAll(path.Join(fileSavePath, product), filePermisionKeys)
 			if err != nil {
-				log.Fatalf("Error while creating directory for product name %s, error: %v", product, err)
+				message := fmt.Sprintf("Error while creating directory for product name %s", product)
+				message += ", error: %v ❌ "
+				printError(cmd, message, err)
+				return
 			}
 
-			bundleFilePath := path.Join(fileSavePath, product, caBundleName)
-			if err = saveToFile(bundleFilePath, bundle); err != nil {
-				log.Fatalf("Error while saving ARK-ASK to file: %v", err)
+			bundlePath := path.Join(fileSavePath, product, caBundleName)
+			if err = saveToFile(bundlePath, bundle); err != nil {
+				printError(cmd, "Error while saving ARK-ASK to file: %v ❌ ", err)
+				return
 			}
 		},
 	}

cli/cache_test.go

@@ -0,0 +1,59 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"bytes"
+	"os"
+	"path"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewCABundleCmd(t *testing.T) {
+	cli := &CLI{}
+	tempDir, err := os.MkdirTemp("", "ca-bundle-test")
+	assert.NoError(t, err)
+	defer os.RemoveAll(tempDir)
+
+	manifestContent := []byte(`{"root_of_trust": {"product_line": "Milan"}}`)
+	manifestPath := path.Join(tempDir, "manifest.json")
+	err = os.WriteFile(manifestPath, manifestContent, 0o644)
+	assert.NoError(t, err)
+
+	cmd := cli.NewCABundleCmd(tempDir)
+	cmd.SetArgs([]string{manifestPath})
+	output := &bytes.Buffer{}
+	cmd.SetOutput(output)
+	err = cmd.Execute()
+
+	assert.NoError(t, err)
+
+	expectedFilePath := path.Join(tempDir, "Milan", caBundleName)
+	_, err = os.Stat(expectedFilePath)
+	assert.NoError(t, err)
+
+	content, err := os.ReadFile(expectedFilePath)
+	assert.NoError(t, err)
+	assert.NotNil(t, content)
+}
+
+func TestSaveToFile(t *testing.T) {
+	tempDir, err := os.MkdirTemp("", "save-to-file-test")
+	assert.NoError(t, err)
+	defer os.RemoveAll(tempDir)
+
+	filePath := path.Join(tempDir, "test-file.txt")
+	content := []byte("test content")
+
+	err = saveToFile(filePath, content)
+	assert.NoError(t, err)
+
+	savedContent, err := os.ReadFile(filePath)
+	assert.NoError(t, err)
+	assert.Equal(t, content, savedContent)
+
+	_, err = os.Stat(filePath)
+	assert.NoError(t, err)
+}

cli/checksum.go

@@ -3,14 +3,24 @@
 package cli
 
 import (
-	"log"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"os"
 
 	"github.com/spf13/cobra"
+	"github.com/ultravioletrs/cocos/agent"
 	"github.com/ultravioletrs/cocos/internal"
+	"golang.org/x/crypto/sha3"
+)
+
+var (
+	ismanifest bool
+	toBase64   bool
 )
 
 func (cli *CLI) NewFileHashCmd() *cobra.Command {
-	return &cobra.Command{
+	cmd := &cobra.Command{
 		Use:     "checksum",
 		Short:   "Compute the sha3-256 hash of a file",
 		Example: "checksum <file>",
@@ -18,12 +28,68 @@ func (cli *CLI) NewFileHashCmd() *cobra.Command {
 		Run: func(cmd *cobra.Command, args []string) {
 			path := args[0]
 
-			hash, err := internal.ChecksumHex(path)
-			if err != nil {
-				log.Fatalf("Error computing hash: %v", err)
+			if ismanifest {
+				hash, err := manifestChecksum(path)
+				if err != nil {
+					printError(cmd, "Error computing hash: %v ❌ ", err)
+					return
+				}
+
+				cmd.Println("Hash of manifest file:", hashOut(hash))
+				return
 			}
 
-			log.Println("Hash of file:", hash)
+			hash, err := internal.ChecksumHex(path)
+			if err != nil {
+				printError(cmd, "Error computing hash: %v ❌ ", err)
+				return
+			}
+
+			cmd.Println("Hash of file:", hashOut(hash))
 		},
 	}
+
+	cmd.Flags().BoolVarP(&ismanifest, "manifest", "m", false, "Compute the hash of the manifest file")
+	cmd.Flags().BoolVarP(&toBase64, "base64", "b", false, "Output the hash in base64")
+
+	return cmd
+}
+
+func manifestChecksum(path string) (string, error) {
+	file, err := os.ReadFile(path)
+	if err != nil {
+		return "", err
+	}
+
+	var cmp agent.Computation
+
+	if err := json.Unmarshal(file, &cmp); err != nil {
+		return "", err
+	}
+
+	jsonBytes, err := json.Marshal(cmp)
+	if err != nil {
+		return "", err
+	}
+
+	sum := sha3.Sum256(jsonBytes)
+
+	return hex.EncodeToString(sum[:]), nil
+}
+
+func hashOut(hashHex string) string {
+	if toBase64 {
+		return hexToBase64(hashHex)
+	}
+
+	return hashHex
+}
+
+func hexToBase64(hexStr string) string {
+	decoded, err := hex.DecodeString(hexStr)
+	if err != nil {
+		return ""
+	}
+
+	return base64.StdEncoding.EncodeToString(decoded)
 }

cli/checksum_test.go

@@ -0,0 +1,230 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewFileHashCmd(t *testing.T) {
+	cli := &CLI{}
+	cmd := cli.NewFileHashCmd()
+
+	if cmd.Use != "checksum" {
+		t.Errorf("Expected Use to be 'checksum', got %s", cmd.Use)
+	}
+
+	if cmd.Short != "Compute the sha3-256 hash of a file" {
+		t.Errorf("Expected Short to be 'Compute the sha3-256 hash of a file', got %s", cmd.Short)
+	}
+
+	if cmd.Example != "checksum <file>" {
+		t.Errorf("Expected Example to be 'checksum <file>', got %s", cmd.Example)
+	}
+}
+
+func TestNewFileHashCmdRun(t *testing.T) {
+	testCases := []struct {
+		name        string
+		isManifest  bool
+		toBase64    bool
+		expectedOut string
+		expectedErr string
+	}{
+		{
+			name:        "Valid file",
+			isManifest:  false,
+			toBase64:    false,
+			expectedOut: "Hash of file:",
+			expectedErr: "",
+		},
+		{
+			name:        "Valid manifest file",
+			isManifest:  true,
+			toBase64:    false,
+			expectedOut: "Hash of manifest file:",
+			expectedErr: "",
+		},
+		{
+			name:        "Valid file with base64 output",
+			isManifest:  false,
+			toBase64:    true,
+			expectedOut: "Hash of file:",
+			expectedErr: "",
+		},
+		{
+			name:        "Non-existent file",
+			isManifest:  false,
+			toBase64:    false,
+			expectedOut: "Error computing hash:",
+			expectedErr: "",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			cli := &CLI{}
+			cmd := cli.NewFileHashCmd()
+
+			var output bytes.Buffer
+			cmd.SetOut(&output)
+			cmd.SetErr(&output)
+
+			err := cmd.Flags().Set("manifest", fmt.Sprint(tc.isManifest))
+			assert.Nil(t, err)
+			err = cmd.Flags().Set("base64", fmt.Sprint(tc.toBase64))
+			assert.Nil(t, err)
+
+			if tc.name == "Non-existent file" {
+				cmd.SetArgs([]string{"non_existent_file.txt"})
+			} else {
+				content := []byte("{}")
+				tmpfile, err := os.CreateTemp("", "example")
+				if err != nil {
+					t.Fatal(err)
+				}
+				defer os.Remove(tmpfile.Name())
+
+				if _, err := tmpfile.Write(content); err != nil {
+					t.Fatal(err)
+				}
+				if err := tmpfile.Close(); err != nil {
+					t.Fatal(err)
+				}
+
+				cmd.SetArgs([]string{tmpfile.Name()})
+			}
+
+			err = cmd.Execute()
+			if err != nil {
+				t.Fatalf("Error executing command: %v", err)
+			}
+
+			out := output.String()
+			if !strings.Contains(out, tc.expectedOut) {
+				t.Errorf("Expected output to contain '%s', got '%s'", tc.expectedOut, out)
+			}
+
+			if tc.expectedErr != "" && !strings.Contains(out, tc.expectedErr) {
+				t.Errorf("Expected output to contain '%s', got '%s'", tc.expectedErr, out)
+			}
+		})
+	}
+}
+
+func TestManifestChecksum(t *testing.T) {
+	testCases := []struct {
+		name        string
+		jsonContent string
+		expectedSum string
+	}{
+		{
+			name: "Valid manifest file",
+			jsonContent: `{
+				"id": "1234",
+				"name": "Example Computation",
+				"description": "This is an example computation"
+			}`,
+			expectedSum: "a99683e4d22ba54cefa51aa49fb2e97a92b828c088395992ddff16a6236f3299",
+		},
+		{
+			name:        "Invalid JSON",
+			jsonContent: `{`,
+			expectedSum: "",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			f, err := os.CreateTemp("", "test")
+			assert.Nil(t, err)
+
+			t.Cleanup(func() {
+				os.Remove(f.Name())
+			})
+
+			_, err = f.WriteString(tc.jsonContent)
+			assert.NoError(t, err)
+
+			err = f.Close()
+			assert.Nil(t, err)
+
+			hash, err := manifestChecksum(f.Name())
+			if tc.expectedSum == "" && err == nil {
+				t.Errorf("Expected error, got nil")
+			}
+			if tc.expectedSum != "" && err != nil {
+				t.Errorf("Unexpected error: %v", err)
+			}
+			if hash != tc.expectedSum {
+				t.Errorf("Expected hash %s, got %s", tc.expectedSum, hash)
+			}
+		})
+	}
+}
+
+func TestHexToBase64(t *testing.T) {
+	testCases := []struct {
+		name        string
+		hexInput    string
+		expectedOut string
+	}{
+		{
+			name:        "Valid hex input",
+			hexInput:    "48656c6c6f",
+			expectedOut: "SGVsbG8=",
+		},
+		{
+			name:        "Invalid hex input",
+			hexInput:    "invalid-hex",
+			expectedOut: "",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			out := hexToBase64(tc.hexInput)
+			if out != tc.expectedOut {
+				t.Errorf("Expected %s, got %s", tc.expectedOut, out)
+			}
+		})
+	}
+}
+
+func TestHashOut(t *testing.T) {
+	testCases := []struct {
+		name        string
+		hashHex     string
+		toBase64    bool
+		expectedOut string
+	}{
+		{
+			name:        "Hex output",
+			hashHex:     "48656c6c6f",
+			toBase64:    false,
+			expectedOut: "48656c6c6f",
+		},
+		{
+			name:        "Base64 output",
+			hashHex:     "48656c6c6f",
+			toBase64:    true,
+			expectedOut: "SGVsbG8=",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			toBase64 = tc.toBase64
+			out := hashOut(tc.hashHex)
+			if out != tc.expectedOut {
+				t.Errorf("Expected %s, got %s", tc.expectedOut, out)
+			}
+		})
+	}
+}

cli/datasets.go

@@ -6,10 +6,11 @@ import (
 	"context"
 	"crypto/x509"
 	"encoding/pem"
-	"log"
 	"os"
 	"path"
 
+	"github.com/absmach/magistrala/pkg/errors"
+	"github.com/fatih/color"
 	"github.com/spf13/cobra"
 	"github.com/ultravioletrs/cocos/agent"
 	"github.com/ultravioletrs/cocos/internal"
@@ -25,49 +26,61 @@ func (cli *CLI) NewDatasetsCmd() *cobra.Command {
 		Example: "data <dataset_path> <private_key_file_path>",
 		Args:    cobra.ExactArgs(2),
 		Run: func(cmd *cobra.Command, args []string) {
+			if cli.connectErr != nil {
+				printError(cmd, "Failed to connect to agent: %v ❌ ", cli.connectErr)
+				return
+			}
+
 			datasetPath := args[0]
 
-			log.Println("Uploading dataset:", datasetPath)
+			cmd.Println("Uploading dataset:", datasetPath)
 
 			f, err := os.Stat(datasetPath)
 			if err != nil {
-				log.Fatalf("Error reading dataset file: %v", err)
+				printError(cmd, "Error reading dataset file: %v ❌ ", err)
+				return
 			}
 
-			var dataset []byte
+			var dataset *os.File
 
 			if f.IsDir() {
-				dataset, err = internal.ZipDirectoryToMemory(datasetPath)
+				dataset, err = internal.ZipDirectoryToTempFile(datasetPath)
 				if err != nil {
-					log.Fatalf("Error zipping dataset directory: %v", err)
+					printError(cmd, "Error zipping dataset directory: %v ❌ ", err)
+					return
 				}
+				defer dataset.Close()
+				defer os.Remove(dataset.Name())
 			} else {
-				dataset, err = os.ReadFile(datasetPath)
+				dataset, err = os.Open(datasetPath)
 				if err != nil {
-					log.Fatalf("Error reading dataset file: %v", err)
+					printError(cmd, "Error reading dataset file: %v ❌ ", err)
+					return
 				}
-			}
-
-			dataReq := agent.Dataset{
-				Dataset:  dataset,
-				Filename: path.Base(datasetPath),
+				defer dataset.Close()
 			}
 
 			privKeyFile, err := os.ReadFile(args[1])
 			if err != nil {
-				log.Fatalf("Error reading private key file: %v", err)
+				printError(cmd, "Error reading private key file: %v ❌ ", err)
+				return
 			}
 
 			pemBlock, _ := pem.Decode(privKeyFile)
 
-			privKey := decodeKey(pemBlock)
-
-			ctx := metadata.NewOutgoingContext(cmd.Context(), metadata.New(make(map[string]string)))
-			if err := cli.agentSDK.Data(addDatasetMetadata(ctx), dataReq, privKey); err != nil {
-				log.Fatalf("Error uploading dataset: %v", err)
+			privKey, err := decodeKey(pemBlock)
+			if err != nil {
+				printError(cmd, "Error decoding private key: %v ❌ ", err)
+				return
 			}
 
-			log.Println("Successfully uploaded dataset")
+			ctx := metadata.NewOutgoingContext(cmd.Context(), metadata.New(make(map[string]string)))
+			if err := cli.agentSDK.Data(addDatasetMetadata(ctx), dataset, path.Base(datasetPath), privKey); err != nil {
+				printError(cmd, "Failed to upload dataset due to error: %v ❌ ", err)
+				return
+			}
+
+			cmd.Println(color.New(color.FgGreen).Sprint("Successfully uploaded dataset! ✔ "))
 		},
 	}
 
@@ -75,26 +88,28 @@ func (cli *CLI) NewDatasetsCmd() *cobra.Command {
 	return cmd
 }
 
-func decodeKey(b *pem.Block) interface{} {
+func decodeKey(b *pem.Block) (interface{}, error) {
+	if b == nil {
+		return nil, errors.New("error decoding key")
+	}
 	switch b.Type {
 	case rsaKeyType:
 		privKey, err := x509.ParsePKCS8PrivateKey(b.Bytes)
 		if err != nil {
 			privKey, err = x509.ParsePKCS1PrivateKey(b.Bytes)
 			if err != nil {
-				log.Fatalf("Error parsing private key: %v", err)
+				return nil, err
 			}
 		}
-		return privKey
+		return privKey, nil
 	case ecdsaKeyType:
 		privKey, err := x509.ParseECPrivateKey(b.Bytes)
 		if err != nil {
-			log.Fatalf("Error parsing private key: %v", err)
+			return nil, err
 		}
-		return privKey
+		return privKey, nil
 	default:
-		log.Fatalf("Error decoding key")
-		return nil
+		return nil, errors.New("error decoding key")
 	}
 }
 

cli/datasets_test.go

@@ -0,0 +1,158 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"bytes"
+	"errors"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"github.com/ultravioletrs/cocos/pkg/sdk/mocks"
+)
+
+func createTempDatasetFile(content string) (string, error) {
+	tmpFile, err := os.CreateTemp("", "dataset-*.txt")
+	if err != nil {
+		return "", err
+	}
+	defer tmpFile.Close()
+
+	_, err = tmpFile.WriteString(content)
+	if err != nil {
+		return "", err
+	}
+	return tmpFile.Name(), nil
+}
+
+func TestDatasetsCmd(t *testing.T) {
+	tests := []struct {
+		name           string
+		setupMock      func(*mocks.SDK)
+		setupFiles     func() (string, error)
+		connectErr     error
+		expectedOutput string
+		cleanup        func(string, string)
+	}{
+		{
+			name: "successful upload",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Data", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil)
+			},
+			setupFiles: func() (string, error) {
+				datasetFile, err := createTempDatasetFile("test dataset content")
+				if err != nil {
+					return "", err
+				}
+				err = generateRSAPrivateKeyFile(privateKeyFile)
+				return datasetFile, err
+			},
+			expectedOutput: "Successfully uploaded dataset",
+			cleanup: func(datasetFile, privateKeyFile string) {
+				os.Remove(datasetFile)
+				os.Remove(privateKeyFile)
+			},
+		},
+		{
+			name: "missing dataset file",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Data", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil)
+			},
+			setupFiles: func() (string, error) {
+				return "", nil
+			},
+			expectedOutput: "Error reading dataset file",
+		},
+		{
+			name: "missing private key file",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Data", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil)
+			},
+			setupFiles: func() (string, error) {
+				return createTempDatasetFile("test dataset content")
+			},
+			expectedOutput: "Error reading private key file",
+			cleanup: func(datasetFile, _ string) {
+				os.Remove(datasetFile)
+			},
+		},
+		{
+			name: "upload failure",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Data", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(errors.New("failed to upload algorithm due to error"))
+			},
+			setupFiles: func() (string, error) {
+				datasetFile, err := createTempDatasetFile("test dataset content")
+				if err != nil {
+					return "", err
+				}
+				err = generateRSAPrivateKeyFile(privateKeyFile)
+				return datasetFile, err
+			},
+			expectedOutput: "Failed to upload dataset due to error",
+			cleanup: func(datasetFile, privateKeyFile string) {
+				os.Remove(datasetFile)
+				os.Remove(privateKeyFile)
+			},
+		},
+		{
+			name: "invalid private key",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Data", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil)
+			},
+			setupFiles: func() (string, error) {
+				datasetFile, err := createTempDatasetFile("test dataset content")
+				if err != nil {
+					return "", err
+				}
+				err = os.WriteFile(privateKeyFile, []byte("invalid private key"), 0o644)
+				return datasetFile, err
+			},
+			expectedOutput: "Error decoding private key",
+			cleanup: func(datasetFile, privateKeyFile string) {
+				os.Remove(datasetFile)
+				os.Remove(privateKeyFile)
+			},
+		},
+		{
+			name: "connection error",
+			setupMock: func(m *mocks.SDK) {
+			},
+			setupFiles:     func() (string, error) { return "", nil },
+			connectErr:     errors.New("failed to connect to agent"),
+			expectedOutput: "Failed to connect to agent",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mockSDK := new(mocks.SDK)
+			if tt.setupMock != nil {
+				tt.setupMock(mockSDK)
+			}
+
+			testCLI := CLI{
+				agentSDK:   mockSDK,
+				connectErr: tt.connectErr,
+			}
+
+			datasetFile, err := tt.setupFiles()
+			require.NoError(t, err)
+
+			cmd := testCLI.NewDatasetsCmd()
+			buf := new(bytes.Buffer)
+			cmd.SetOut(buf)
+			cmd.SetArgs([]string{datasetFile, privateKeyFile})
+			err = cmd.Execute()
+			require.NoError(t, err)
+
+			require.Contains(t, buf.String(), tt.expectedOutput)
+
+			if tt.cleanup != nil {
+				tt.cleanup(datasetFile, privateKeyFile)
+			}
+		})
+	}
+}

cli/errors.go

@@ -0,0 +1,49 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"github.com/absmach/magistrala/pkg/errors"
+	"github.com/fatih/color"
+	"github.com/spf13/cobra"
+	"github.com/ultravioletrs/cocos/agent/auth"
+	"github.com/ultravioletrs/cocos/pkg/clients/grpc/agent"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+var (
+	errAgentUnavailable                   = errors.New("agent is unavailable on the current address")
+	errDigitalSignatureVerificationFailed = errors.New("digital signature verification failed, check the provided public key")
+)
+
+func decodeErros(err error) error {
+	statusErr, ok := status.FromError(err)
+	if ok {
+		switch statusErr.Code() {
+		case codes.PermissionDenied:
+			return errDigitalSignatureVerificationFailed
+		case codes.Unavailable:
+			return errAgentUnavailable
+		case codes.Unknown:
+			return err
+		}
+	}
+	switch {
+	case errors.Contains(err, auth.ErrSignatureVerificationFailed):
+		return auth.ErrSignatureVerificationFailed
+
+	case errors.Contains(err, agent.ErrAgentServiceUnavailable):
+		return agent.ErrAgentServiceUnavailable
+	default:
+		return err
+	}
+}
+
+func printError(cmd *cobra.Command, message string, err error) {
+	if !Verbose {
+		err = decodeErros(err)
+	}
+	msg := color.New(color.FgRed).Sprintf(message, err)
+	cmd.Println(msg)
+}

cli/errors_test.go

@@ -0,0 +1,110 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"bytes"
+	"errors"
+	"testing"
+
+	mgerrors "github.com/absmach/magistrala/pkg/errors"
+	"github.com/fatih/color"
+	"github.com/spf13/cobra"
+	"github.com/ultravioletrs/cocos/agent/auth"
+	"github.com/ultravioletrs/cocos/pkg/clients/grpc/agent"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func TestDecodeErros(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    error
+		expected error
+	}{
+		{
+			name:     "Permission Denied",
+			input:    status.Error(codes.PermissionDenied, "permission denied"),
+			expected: errDigitalSignatureVerificationFailed,
+		},
+		{
+			name:     "Unavailable",
+			input:    status.Error(codes.Unavailable, "service unavailable"),
+			expected: errAgentUnavailable,
+		},
+		{
+			name:     "Unknown",
+			input:    status.Error(codes.Unknown, "unknown error"),
+			expected: status.Error(codes.Unknown, "unknown error"),
+		},
+		{
+			name:     "Signature Verification Failed",
+			input:    mgerrors.Wrap(auth.ErrSignatureVerificationFailed, errors.New("wrapped error")),
+			expected: auth.ErrSignatureVerificationFailed,
+		},
+		{
+			name:     "Other Error",
+			input:    errors.New("other error"),
+			expected: errors.New("other error"),
+		},
+		{
+			name:     "Agent Service Unavailable",
+			input:    mgerrors.Wrap(agent.ErrAgentServiceUnavailable, errors.New("wrapped error")),
+			expected: agent.ErrAgentServiceUnavailable,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := decodeErros(tt.input)
+			if result.Error() != tt.expected.Error() {
+				t.Errorf("decodeErros(%v) = %v, want %v", tt.input, result, tt.expected)
+			}
+		})
+	}
+}
+
+func TestPrintError(t *testing.T) {
+	// Save the original color.NoColor value and restore it after the test
+	origNoColor := color.NoColor
+	color.NoColor = true
+	defer func() { color.NoColor = origNoColor }()
+
+	tests := []struct {
+		name     string
+		message  string
+		err      error
+		verbose  bool
+		expected string
+	}{
+		{
+			name:     "Non-verbose mode",
+			message:  "Error: %s",
+			err:      status.Error(codes.PermissionDenied, "permission denied"),
+			verbose:  false,
+			expected: "Error: digital signature verification failed, check the provided public key\n",
+		},
+		{
+			name:     "Verbose mode",
+			message:  "Error: %s",
+			err:      status.Error(codes.PermissionDenied, "permission denied"),
+			verbose:  true,
+			expected: "Error: rpc error: code = PermissionDenied desc = permission denied\n",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			Verbose = tt.verbose
+			cmd := &cobra.Command{}
+			buf := new(bytes.Buffer)
+			cmd.SetOut(buf)
+
+			printError(cmd, tt.message, tt.err)
+
+			if got := buf.String(); got != tt.expected {
+				t.Errorf("printError() output = %q, want %q", got, tt.expected)
+			}
+		})
+	}
+}

cli/keys.go

@@ -10,9 +10,7 @@ import (
 	"crypto/rsa"
 	"crypto/x509"
 	"encoding/pem"
-	"log"
 	"os"
-	"reflect"
 
 	"github.com/spf13/cobra"
 )
@@ -25,6 +23,8 @@ const (
 	publicKeyType  = "PUBLIC KEY"
 	publicKeyFile  = "public.pem"
 	privateKeyFile = "private.pem"
+	ECDSA          = "ecdsa"
+	ED25519        = "ed25519"
 )
 
 var KeyType string
@@ -39,51 +39,67 @@ func (cli *CLI) NewKeysCmd() *cobra.Command {
 		Args:    cobra.ExactArgs(0),
 		Run: func(cmd *cobra.Command, args []string) {
 			switch KeyType {
-			case "ecdsa":
+			case ECDSA:
 				privEcdsaKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 				if err != nil {
-					log.Fatalf("Error generating keys: %v", err)
+					printError(cmd, "Error generating keys: %v ❌ ", err)
+					return
 				}
 
 				pubKeyBytes, err := x509.MarshalPKIXPublicKey(&privEcdsaKey.PublicKey)
 				if err != nil {
-					log.Fatalf("Error marshalling public key: %v", err)
+					printError(cmd, "Error marshalling public key: %v ❌ ", err)
+					return
 				}
 
-				generateAndWriteKeys(privEcdsaKey, pubKeyBytes, ecdsaKeyType)
+				if err := generateAndWriteKeys(privEcdsaKey, pubKeyBytes, ecdsaKeyType); err != nil {
+					printError(cmd, "Error generating and writing keys: %v ❌ ", err)
+					return
+				}
 
-			case "ed25519":
+			case ED25519:
 				pubEd25519Key, privEd25519Key, err := ed25519.GenerateKey(rand.Reader)
 				if err != nil {
-					log.Fatalf("Error generating keys: %v", err)
+					printError(cmd, "Error generating keys: %v ❌ ", err)
+					return
 				}
 				pubKey, err := x509.MarshalPKIXPublicKey(pubEd25519Key)
 				if err != nil {
-					log.Fatalf("Error marshalling public key: %v", err)
+					printError(cmd, "Error marshalling public key: %v ❌ ", err)
+					return
+				}
+				if err := generateAndWriteKeys(privEd25519Key, pubKey, ed25519KeyType); err != nil {
+					printError(cmd, "Error generating and writing keys: %v ❌ ", err)
+					return
 				}
-				generateAndWriteKeys(privEd25519Key, pubKey, ed25519KeyType)
 
-			// Default to RSA
 			default:
 				privKey, err := rsa.GenerateKey(rand.Reader, keyBitSize)
 				if err != nil {
-					log.Fatalf("Error generating keys: %v", err)
+					printError(cmd, "Error generating keys: %v ❌ ", err)
+					return
 				}
 
 				pubKeyBytes, err := x509.MarshalPKIXPublicKey(&privKey.PublicKey)
 				if err != nil {
-					log.Fatalf("Error marshalling public key: %v", err)
+					printError(cmd, "Error marshalling public key: %v ❌ ", err)
+					return
+				}
+				if err := generateAndWriteKeys(privKey, pubKeyBytes, rsaKeyType); err != nil {
+					printError(cmd, "Error generating and writing keys: %v ❌ ", err)
+					return
 				}
-				generateAndWriteKeys(privKey, pubKeyBytes, rsaKeyType)
 			}
+
+			cmd.Printf("Successfully generated public/private key pair of type: %s", KeyType)
 		},
 	}
 }
 
-func generateAndWriteKeys(privKey interface{}, pubKeyBytes []byte, keyType string) {
+func generateAndWriteKeys(privKey interface{}, pubKeyBytes []byte, keyType string) error {
 	privFile, err := os.Create(privateKeyFile)
 	if err != nil {
-		log.Fatalf("Error creating private key file: %v", err)
+		return err
 	}
 	defer privFile.Close()
 
@@ -97,22 +113,19 @@ func generateAndWriteKeys(privKey interface{}, pubKeyBytes []byte, keyType strin
 		b, err = x509.MarshalPKCS8PrivateKey(privKey)
 	}
 	if err != nil {
-		log.Printf("Error marshalling private key: %v", err)
-		return
+		return err
 	}
 
 	if err := pem.Encode(privFile, &pem.Block{
 		Type:  keyType,
 		Bytes: b,
 	}); err != nil {
-		log.Printf("Error encoding private key: %v", err)
-		return
+		return err
 	}
 
 	pubFile, err := os.Create(publicKeyFile)
 	if err != nil {
-		log.Printf("Error creating public key file: %v", err)
-		return
+		return err
 	}
 	defer pubFile.Close()
 
@@ -120,9 +133,8 @@ func generateAndWriteKeys(privKey interface{}, pubKeyBytes []byte, keyType strin
 		Type:  publicKeyType,
 		Bytes: pubKeyBytes,
 	}); err != nil {
-		log.Printf("Error encoding public key: %v", err)
-		return
+		return err
 	}
 
-	log.Printf("Successfully generated public/private key pair of type: %s", reflect.TypeOf(privKey).String())
+	return nil
 }

cli/keys_test.go

@@ -0,0 +1,92 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"crypto/ecdsa"
+	"crypto/ed25519"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"os"
+	"testing"
+)
+
+func TestNewKeysCmd(t *testing.T) {
+	cli := &CLI{}
+	cmd := cli.NewKeysCmd()
+
+	if cmd.Use != "keys" {
+		t.Errorf("Expected Use to be 'keys', got %s", cmd.Use)
+	}
+
+	if cmd.Short != "Generate a new public/private key pair" {
+		t.Errorf("Unexpected Short description: %s", cmd.Short)
+	}
+}
+
+func TestGenerateAndWriteKeys(t *testing.T) {
+	tests := []struct {
+		name    string
+		keyType string
+	}{
+		{"RSA", "rsa"},
+		{"ECDSA", "ecdsa"},
+		{"ED25519", "ed25519"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			KeyType = tt.keyType
+			cmd := (&CLI{}).NewKeysCmd()
+			cmd.Run(cmd, []string{})
+
+			if _, err := os.Stat(privateKeyFile); os.IsNotExist(err) {
+				t.Errorf("Private key file was not created")
+			}
+			if _, err := os.Stat(publicKeyFile); os.IsNotExist(err) {
+				t.Errorf("Public key file was not created")
+			}
+
+			privKeyData, err := os.ReadFile(privateKeyFile)
+			if err != nil {
+				t.Fatalf("Failed to read private key file: %v", err)
+			}
+			privPem, _ := pem.Decode(privKeyData)
+			if privPem == nil {
+				t.Fatalf("Failed to decode private key PEM")
+			}
+
+			var privKey interface{}
+			switch tt.keyType {
+			case "rsa":
+				privKey, err = x509.ParsePKCS1PrivateKey(privPem.Bytes)
+			case "ecdsa":
+				privKey, err = x509.ParseECPrivateKey(privPem.Bytes)
+			case "ed25519":
+				privKey, err = x509.ParsePKCS8PrivateKey(privPem.Bytes)
+			}
+			if err != nil {
+				t.Fatalf("Failed to parse private key: %v", err)
+			}
+
+			switch tt.keyType {
+			case "rsa":
+				if _, ok := privKey.(*rsa.PrivateKey); !ok {
+					t.Errorf("Expected RSA private key, got %T", privKey)
+				}
+			case "ecdsa":
+				if _, ok := privKey.(*ecdsa.PrivateKey); !ok {
+					t.Errorf("Expected ECDSA private key, got %T", privKey)
+				}
+			case "ed25519":
+				if _, ok := privKey.(ed25519.PrivateKey); !ok {
+					t.Errorf("Expected ED25519 private key, got %T", privKey)
+				}
+			}
+
+			os.Remove(privateKeyFile)
+			os.Remove(publicKeyFile)
+		})
+	}
+}

cli/manager.go

@@ -0,0 +1,130 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+package cli
+
+import (
+	"os"
+
+	"github.com/fatih/color"
+	"github.com/spf13/cobra"
+	"github.com/ultravioletrs/cocos/manager"
+)
+
+const (
+	serverURL = "server-url"
+	serverCA  = "server-ca"
+	clientKey = "client-key"
+	clientCrt = "client-crt"
+	logLevel  = "log-level"
+)
+
+var (
+	agentCVMServerUrl string
+	agentCVMServerCA  string
+	agentCVMClientKey string
+	agentCVMClientCrt string
+	agentLogLevel     string
+)
+
+func (c *CLI) NewCreateVMCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "create-vm",
+		Short:   "Create a new virtual machine",
+		Example: `create-vm`,
+		Args:    cobra.ExactArgs(0),
+		Run: func(cmd *cobra.Command, args []string) {
+			if err := c.InitializeManagerClient(cmd); err != nil {
+				printError(cmd, "Failed to connect to manager: %v ❌ ", c.connectErr)
+				return
+			}
+			defer c.Close()
+
+			createReq, err := loadCerts()
+			if err != nil {
+				printError(cmd, "Error loading certs: %v ❌ ", err)
+				return
+			}
+
+			createReq.AgentCvmServerUrl = agentCVMServerUrl
+			createReq.AgentLogLevel = agentLogLevel
+
+			cmd.Println("🔗 Creating a new virtual machine")
+
+			res, err := c.managerClient.CreateVm(cmd.Context(), createReq)
+			if err != nil {
+				printError(cmd, "Error creating virtual machine: %v ❌ ", err)
+				return
+			}
+
+			cmd.Println(color.New(color.FgGreen).Sprintf("✅ Virtual machine created successfully with id %s and port %s", res.SvmId, res.ForwardedPort))
+		},
+	}
+
+	cmd.Flags().StringVar(&agentCVMServerUrl, serverURL, "", "CVM server URL")
+	cmd.Flags().StringVar(&agentCVMServerCA, serverCA, "", "CVM server CA")
+	cmd.Flags().StringVar(&agentCVMClientKey, clientKey, "", "CVM client key")
+	cmd.Flags().StringVar(&agentCVMClientCrt, clientCrt, "", "CVM client crt")
+	cmd.Flags().StringVar(&agentLogLevel, logLevel, "", "Agent Log level")
+
+	return cmd
+}
+
+func (c *CLI) NewRemoveVMCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "remove-vm",
+		Short:   "Remove a virtual machine",
+		Example: `remove-vm <svm_id>`,
+		Args:    cobra.ExactArgs(1),
+		Run: func(cmd *cobra.Command, args []string) {
+			if err := c.InitializeManagerClient(cmd); err == nil {
+				defer c.Close()
+			}
+
+			if c.connectErr != nil {
+				printError(cmd, "Failed to connect to manager: %v ❌ ", c.connectErr)
+				return
+			}
+
+			cmd.Println("🔗 Removing virtual machine")
+
+			_, err := c.managerClient.RemoveVm(cmd.Context(), &manager.RemoveReq{SvmId: args[0]})
+			if err != nil {
+				printError(cmd, "Error removing virtual machine: %v ❌ ", err)
+				return
+			}
+
+			cmd.Println(color.New(color.FgGreen).Sprintf("✅ Virtual machine removed successfully"))
+		},
+	}
+}
+
+func fileReader(path string) ([]byte, error) {
+	if path == "" {
+		return nil, nil
+	}
+
+	return os.ReadFile(path)
+}
+
+func loadCerts() (*manager.CreateReq, error) {
+	clientKey, err := fileReader(agentCVMClientKey)
+	if err != nil {
+		return nil, err
+	}
+
+	clientCrt, err := fileReader(agentCVMClientCrt)
+	if err != nil {
+		return nil, err
+	}
+
+	serverCA, err := fileReader(agentCVMServerCA)
+	if err != nil {
+		return nil, err
+	}
+
+	return &manager.CreateReq{
+		AgentCvmServerCaCert: serverCA,
+		AgentCvmClientKey:    clientKey,
+		AgentCvmClientCert:   clientCrt,
+	}, nil
+}

cli/result.go

@@ -4,43 +4,64 @@ package cli
 
 import (
 	"encoding/pem"
-	"log"
 	"os"
 
+	"github.com/fatih/color"
 	"github.com/spf13/cobra"
 )
 
-const resultFilePath = "results.zip"
+const (
+	resultFilePrefix = "results"
+	resultFileExt    = ".zip"
+	resultfilename   = "results.zip"
+)
 
 func (cli *CLI) NewResultsCmd() *cobra.Command {
 	return &cobra.Command{
 		Use:     "result",
 		Short:   "Retrieve computation result file",
-		Example: "result <private_key_file_path>",
-		Args:    cobra.ExactArgs(1),
+		Example: "result <private_key_file_path> <optional_file_name.zip>",
+		Args:    cobra.MinimumNArgs(1),
 		Run: func(cmd *cobra.Command, args []string) {
-			log.Println("Retrieving computation result file")
+			if cli.connectErr != nil {
+				printError(cmd, "Failed to connect to agent: %v ❌ ", cli.connectErr)
+				return
+			}
+
+			cmd.Println("⏳ Retrieving computation result file")
 
 			privKeyFile, err := os.ReadFile(args[0])
 			if err != nil {
-				log.Fatalf("Error reading private key file: %v", err)
+				printError(cmd, "Error reading private key file: %v ❌ ", err)
+				return
+			}
+
+			filename := resultfilename
+			if len(args) > 1 {
+				filename = args[1]
 			}
 
 			pemBlock, _ := pem.Decode(privKeyFile)
 
-			var result []byte
-
-			privKey := decodeKey(pemBlock)
-			result, err = cli.agentSDK.Result(cmd.Context(), privKey)
+			privKey, err := decodeKey(pemBlock)
 			if err != nil {
-				log.Fatalf("Error retrieving computation result: %v", err)
+				printError(cmd, "Error decoding private key: %v ❌ ", err)
+				return
 			}
 
-			if err := os.WriteFile(resultFilePath, result, 0o644); err != nil {
-				log.Fatalf("Error saving computation result to %s: %v", resultFilePath, err)
+			resultFile, err := os.Create(filename)
+			if err != nil {
+				printError(cmd, "Error creating result file: %v ❌ ", err)
+				return
+			}
+			defer resultFile.Close()
+
+			if err = cli.agentSDK.Result(cmd.Context(), privKey, resultFile); err != nil {
+				printError(cmd, "Error retrieving computation result: %v ❌ ", err)
+				return
 			}
 
-			log.Println("Computation result retrieved and saved successfully!")
+			cmd.Println(color.New(color.FgGreen).Sprintf("Computation result retrieved and saved successfully as %s! ✔ ", filename))
 		},
 	}
 }

cli/result_test.go

@@ -0,0 +1,177 @@
+// Copyright (c) Ultraviolet
+// SPDX-License-Identifier: Apache-2.0
+
+package cli
+
+import (
+	"bytes"
+	"errors"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"github.com/ultravioletrs/cocos/pkg/sdk/mocks"
+)
+
+const compResult = "Test computation result"
+
+func TestResultsCmd_MultipleExecutions(t *testing.T) {
+	mockSDK := new(mocks.SDK)
+	mockSDK.On("Result", mock.Anything, mock.Anything, mock.Anything).Return(nil).Run(func(args mock.Arguments) {
+		_, err := args.Get(2).(*os.File).WriteString(compResult)
+		require.NoError(t, err)
+	})
+	testCLI := CLI{agentSDK: mockSDK}
+
+	err := generateRSAPrivateKeyFile(privateKeyFile)
+	require.NoError(t, err)
+
+	cmd := testCLI.NewResultsCmd()
+	buf := new(bytes.Buffer)
+	cmd.SetOut(buf)
+	cmd.SetArgs([]string{privateKeyFile})
+
+	for i := 0; i < 3; i++ {
+		err = cmd.Execute()
+		require.NoError(t, err)
+		require.Contains(t, buf.String(), "Computation result retrieved and saved successfully")
+		buf.Reset()
+	}
+
+	files, err := filepath.Glob("results*.zip")
+	require.NoError(t, err)
+
+	t.Cleanup(func() {
+		for _, file := range files {
+			os.Remove(file)
+		}
+		os.Remove(privateKeyFile)
+	})
+}
+
+func TestResultsCmd_InvalidPrivateKey(t *testing.T) {
+	mockSDK := new(mocks.SDK)
+	mockSDK.On("Result", mock.Anything, mock.Anything, mock.Anything).Return(nil).Run(func(args mock.Arguments) {
+		_, err := args.Get(2).(*os.File).WriteString(compResult)
+		require.NoError(t, err)
+	})
+	testCLI := CLI{agentSDK: mockSDK}
+
+	invalidPrivateKey, err := os.CreateTemp("", "invalid_private_key.pem")
+	require.NoError(t, err)
+	err = invalidPrivateKey.Close()
+	require.NoError(t, err)
+
+	t.Cleanup(func() {
+		err := os.Remove(invalidPrivateKey.Name())
+		require.NoError(t, err)
+	})
+
+	cmd := testCLI.NewResultsCmd()
+	buf := new(bytes.Buffer)
+	cmd.SetOut(buf)
+	cmd.SetArgs([]string{invalidPrivateKey.Name()})
+	err = cmd.Execute()
+	require.NoError(t, err)
+
+	require.Contains(t, buf.String(), "Error decoding private key")
+	mockSDK.AssertNotCalled(t, "Result", mock.Anything, mock.Anything, mock.Anything)
+}
+
+func TestResultsCmd(t *testing.T) {
+	tests := []struct {
+		name           string
+		setupMock      func(*mocks.SDK)
+		setupFiles     func() (string, error)
+		connectErr     error
+		expectedOutput string
+		cleanup        func()
+	}{
+		{
+			name: "successful result retrieval",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Result", mock.Anything, mock.Anything, mock.Anything).Return(nil).Run(func(args mock.Arguments) {
+					_, err := args.Get(2).(*os.File).WriteString(compResult)
+					require.NoError(t, err)
+				})
+			},
+			setupFiles: func() (string, error) {
+				return privateKeyFile, generateRSAPrivateKeyFile(privateKeyFile)
+			},
+			expectedOutput: "Computation result retrieved and saved successfully",
+			cleanup: func() {
+				files, _ := filepath.Glob("results*.zip")
+				for _, file := range files {
+					os.Remove(file)
+				}
+				os.Remove(privateKeyFile)
+			},
+		},
+		{
+			name: "missing private key file",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Result", mock.Anything, mock.Anything, mock.Anything).Return(nil).Run(func(args mock.Arguments) {
+					_, err := args.Get(2).(*os.File).WriteString(compResult)
+					require.NoError(t, err)
+				})
+			},
+			setupFiles: func() (string, error) {
+				return "non_existent_private_key.pem", nil
+			},
+			expectedOutput: "Error reading private key file",
+		},
+		{
+			name: "result retrieval failure",
+			setupMock: func(m *mocks.SDK) {
+				m.On("Result", mock.Anything, mock.Anything, mock.Anything).Return(errors.New("error retrieving computation result"))
+			},
+			setupFiles: func() (string, error) {
+				return privateKeyFile, generateRSAPrivateKeyFile(privateKeyFile)
+			},
+			expectedOutput: "error retrieving computation result",
+			cleanup: func() {
+				os.Remove(privateKeyFile)
+			},
+		},
+		{
+			name: "connection error",
+			setupMock: func(m *mocks.SDK) {
+			},
+			setupFiles:     func() (string, error) { return "", nil },
+			connectErr:     errors.New("failed to connect to agent"),
+			expectedOutput: "Failed to connect to agent",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mockSDK := new(mocks.SDK)
+			if tt.setupMock != nil {
+				tt.setupMock(mockSDK)
+			}
+
+			testCLI := CLI{
+				agentSDK:   mockSDK,
+				connectErr: tt.connectErr,
+			}
+
+			file, err := tt.setupFiles()
+			require.NoError(t, err)
+
+			cmd := testCLI.NewResultsCmd()
+			buf := new(bytes.Buffer)
+			cmd.SetOut(buf)
+			cmd.SetArgs([]string{file})
+			err = cmd.Execute()
+			require.NoError(t, err)
+
+			require.Contains(t, buf.String(), tt.expectedOutput)
+
+			if tt.cleanup != nil {
+				tt.cleanup()
+			}
+		})
+	}
+}

cli/sdk.go

@@ -2,14 +2,65 @@
 // SPDX-License-Identifier: Apache-2.0
 package cli
 
-import "github.com/ultravioletrs/cocos/pkg/sdk"
+import (
+	"context"
+
+	"github.com/spf13/cobra"
+	"github.com/ultravioletrs/cocos/manager"
+	"github.com/ultravioletrs/cocos/pkg/attestation/igvmmeasure"
+	"github.com/ultravioletrs/cocos/pkg/clients/grpc"
+	"github.com/ultravioletrs/cocos/pkg/clients/grpc/agent"
+	managergrpc "github.com/ultravioletrs/cocos/pkg/clients/grpc/manager"
+	"github.com/ultravioletrs/cocos/pkg/sdk"
+)
+
+var Verbose bool
 
 type CLI struct {
-	agentSDK sdk.SDK
+	agentSDK      sdk.SDK
+	agentConfig   grpc.AgentClientConfig
+	managerConfig grpc.ManagerClientConfig
+	client        grpc.Client
+	managerClient manager.ManagerServiceClient
+	connectErr    error
+	measurement   igvmmeasure.MeasurementProvider
 }
 
-func New(agentSDK sdk.SDK) *CLI {
+func New(agentConfig grpc.AgentClientConfig, managerConfig grpc.ManagerClientConfig, measurement igvmmeasure.MeasurementProvider) *CLI {
 	return &CLI{
-		agentSDK: agentSDK,
+		agentConfig:   agentConfig,
+		managerConfig: managerConfig,
+		measurement:   measurement,
 	}
 }
+
+func (c *CLI) InitializeAgentSDK(cmd *cobra.Command) error {
+	agentGRPCClient, agentClient, err := agent.NewAgentClient(context.Background(), c.agentConfig)
+	if err != nil {
+		c.connectErr = err
+		return err
+	}
+	cmd.Println("🔗 Connected to agent using ", agentGRPCClient.Secure())
+	c.client = agentGRPCClient
+
+	c.agentSDK = sdk.NewAgentSDK(agentClient)
+	return nil
+}
+
+func (c *CLI) InitializeManagerClient(cmd *cobra.Command) error {
+	managerGRPCClient, managerClient, err := managergrpc.NewManagerClient(c.managerConfig)
+	if err != nil {
+		c.connectErr = err
+		return err
+	}
+
+	cmd.Println("🔗 Connected to manager using ", managerGRPCClient.Secure())
+	c.client = managerGRPCClient
+
+	c.managerClient = managerClient
+	return nil
+}
+
+func (c *CLI) Close() {
+	c.client.Close()
+}

cmd/agent/main.go

@@ -4,103 +4,164 @@ package main
 
 import (
 	"context"
-	"encoding/json"
+	"errors"
 	"fmt"
-	"io"
 	"log"
 	"log/slog"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
 
+	mglog "github.com/absmach/magistrala/logger"
 	"github.com/absmach/magistrala/pkg/prometheus"
+	"github.com/caarlos0/env/v11"
 	"github.com/google/go-sev-guest/client"
-	"github.com/mdlayher/vsock"
+	"github.com/stretchr/testify/mock"
 	"github.com/ultravioletrs/cocos/agent"
 	"github.com/ultravioletrs/cocos/agent/api"
-	agentgrpc "github.com/ultravioletrs/cocos/agent/api/grpc"
-	"github.com/ultravioletrs/cocos/agent/auth"
+	"github.com/ultravioletrs/cocos/agent/cvms"
+	cvmsapi "github.com/ultravioletrs/cocos/agent/cvms/api/grpc"
+	"github.com/ultravioletrs/cocos/agent/cvms/server"
 	"github.com/ultravioletrs/cocos/agent/events"
-	"github.com/ultravioletrs/cocos/agent/quoteprovider"
 	agentlogger "github.com/ultravioletrs/cocos/internal/logger"
-	"github.com/ultravioletrs/cocos/internal/server"
-	grpcserver "github.com/ultravioletrs/cocos/internal/server/grpc"
-	"github.com/ultravioletrs/cocos/manager"
-	"github.com/ultravioletrs/cocos/manager/qemu"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider"
+	"github.com/ultravioletrs/cocos/pkg/attestation/quoteprovider/mocks"
+	pkggrpc "github.com/ultravioletrs/cocos/pkg/clients/grpc"
+	cvmsgrpc "github.com/ultravioletrs/cocos/pkg/clients/grpc/cvm"
 	"golang.org/x/sync/errgroup"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/reflection"
 )
 
 const (
-	svcName        = "agent"
-	defSvcGRPCPort = "7002"
+	svcName          = "agent"
+	defSvcGRPCPort   = "7002"
+	retryInterval    = 5 * time.Second
+	envPrefixCVMGRPC = "AGENT_CVM_GRPC_"
+	storageDir       = "/var/lib/cocos/agent"
 )
 
+type config struct {
+	LogLevel string `env:"AGENT_LOG_LEVEL" envDefault:"debug"`
+	Vmpl     int    `env:"AGENT_VMPL" envDefault:"2"`
+}
+
 func main() {
 	ctx, cancel := context.WithCancel(context.Background())
 	g, ctx := errgroup.WithContext(ctx)
 
-	cfg, err := readConfig()
-	if err != nil {
-		log.Fatalf("failed to read agent configuration from vsock %s", err.Error())
+	var cfg config
+	if err := env.Parse(&cfg); err != nil {
+		log.Fatalf("failed to load %s configuration : %s", svcName, err)
 	}
 
-	conn, err := vsock.Dial(vsock.Host, manager.ManagerVsockPort, nil)
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer conn.Close()
+	var exitCode int
+	defer mglog.ExitWithError(&exitCode)
 
 	var level slog.Level
-	if err := level.UnmarshalText([]byte(cfg.AgentConfig.LogLevel)); err != nil {
+	if err := level.UnmarshalText([]byte(cfg.LogLevel)); err != nil {
 		log.Println(err)
+		exitCode = 1
 		return
 	}
-	handler := agentlogger.NewProtoHandler(conn, &slog.HandlerOptions{Level: level})
+
+	eventsLogsQueue := make(chan *cvms.ClientStreamMessage, 1000)
+
+	handler := agentlogger.NewProtoHandler(os.Stdout, &slog.HandlerOptions{Level: level}, eventsLogsQueue)
 	logger := slog.New(handler)
 
-	eventSvc, err := events.New(svcName, cfg.ID, manager.ManagerVsockPort)
+	eventSvc, err := events.New(svcName, eventsLogsQueue)
 	if err != nil {
 		logger.Error(fmt.Sprintf("failed to create events service %s", err.Error()))
+		exitCode = 1
 		return
 	}
-	defer eventSvc.Close()
 
-	qp, err := quoteprovider.GetQuoteProvider()
+	var qp client.LeveledQuoteProvider
+
+	if !sevGuesDeviceExists() {
+		logger.Info("SEV-SNP device not found")
+		qpMock := new(mocks.LeveledQuoteProvider)
+		qpMock.On("GetRawQuoteAtLevel", mock.Anything, mock.Anything).Return([]uint8{}, errors.New("SEV-SNP device not found"))
+		qp = qpMock
+	} else {
+		qp, err = quoteprovider.GetLeveledQuoteProvider()
+		if err != nil {
+			logger.Error(fmt.Sprintf("failed to create quote provider %s", err.Error()))
+			exitCode = 1
+			return
+		}
+	}
+
+	cvmGrpcConfig := pkggrpc.CVMClientConfig{}
+	if err := env.ParseWithOptions(&cvmGrpcConfig, env.Options{Prefix: envPrefixCVMGRPC}); err != nil {
+		logger.Error(fmt.Sprintf("failed to load %s gRPC client configuration : %s", svcName, err))
+		exitCode = 1
+		return
+	}
+
+	cvmGRPCClient, cvmsClient, err := cvmsgrpc.NewCVMClient(cvmGrpcConfig)
 	if err != nil {
-		logger.Error(fmt.Sprintf("failed to create quote provider %s", err.Error()))
+		logger.Error(err.Error())
+		exitCode = 1
 		return
 	}
+	defer cvmGRPCClient.Close()
 
-	svc := newService(ctx, logger, eventSvc, cfg, qp)
+	reconnectFn := func(ctx context.Context) (cvms.Service_ProcessClient, error) {
+		_, newClient, err := cvmsgrpc.NewCVMClient(cvmGrpcConfig)
+		if err != nil {
+			return nil, err
+		}
+		// Don't defer close here as we want to keep the connection open
 
-	grpcServerConfig := server.Config{
-		Port:         cfg.AgentConfig.Port,
-		Host:         cfg.AgentConfig.Host,
-		CertFile:     cfg.AgentConfig.CertFile,
-		KeyFile:      cfg.AgentConfig.KeyFile,
-		ServerCAFile: cfg.AgentConfig.ServerCAFile,
-		ClientCAFile: cfg.AgentConfig.ClientCAFile,
-		AttestedTLS:  cfg.AgentConfig.AttestedTls,
+		return newClient.Process(ctx)
 	}
 
-	registerAgentServiceServer := func(srv *grpc.Server) {
-		reflection.Register(srv)
-		agent.RegisterAgentServiceServer(srv, agentgrpc.NewServer(svc))
-	}
-
-	authSvc, err := auth.New(cfg)
+	pc, err := cvmsClient.Process(ctx)
 	if err != nil {
-		logger.Error(fmt.Sprintf("failed to create auth service %s", err.Error()))
+		logger.Error(err.Error())
+		exitCode = 1
 		return
 	}
 
-	gs := grpcserver.New(ctx, cancel, svcName, grpcServerConfig, registerAgentServiceServer, logger, qp, authSvc)
+	if cfg.Vmpl < 0 || cfg.Vmpl > 3 {
+		logger.Error("vmpl level must be in a range [0, 3]")
+		exitCode = 1
+		return
+	}
+
+	svc := newService(ctx, logger, eventSvc, qp, cfg.Vmpl)
+
+	if err := os.MkdirAll(storageDir, 0o755); err != nil {
+		logger.Error(fmt.Sprintf("failed to create storage directory: %s", err))
+		exitCode = 1
+		return
+	}
+
+	mc, err := cvmsapi.NewClient(pc, svc, eventsLogsQueue, logger, server.NewServer(logger, svc), storageDir, reconnectFn)
+	if err != nil {
+		logger.Error(err.Error())
+		exitCode = 1
+		return
+	}
 
 	g.Go(func() error {
-		return gs.Start()
+		ch := make(chan os.Signal, 1)
+		signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
+		defer signal.Stop(ch)
+
+		select {
+		case <-ch:
+			logger.Info("Received signal, shutting down...")
+			cancel()
+			return nil
+		case <-ctx.Done():
+			return ctx.Err()
+		}
 	})
 
 	g.Go(func() error {
-		return server.StopHandler(ctx, cancel, logger, svcName, gs)
+		return mc.Process(ctx, cancel)
 	})
 
 	if err := g.Wait(); err != nil {
@@ -108,8 +169,8 @@ func main() {
 	}
 }
 
-func newService(ctx context.Context, logger *slog.Logger, eventSvc events.Service, cmp agent.Computation, qp client.QuoteProvider) agent.Service {
-	svc := agent.New(ctx, logger, eventSvc, cmp, qp)
+func newService(ctx context.Context, logger *slog.Logger, eventSvc events.Service, qp client.LeveledQuoteProvider, vmpl int) agent.Service {
+	svc := agent.New(ctx, logger, eventSvc, qp, vmpl)
 
 	svc = api.LoggingMiddleware(svc, logger)
 	counter, latency := prometheus.MakeMetrics(svcName, "api")
@@ -118,43 +179,11 @@ func newService(ctx context.Context, logger *slog.Logger, eventSvc events.Servic
 	return svc
 }
 
-func readConfig() (agent.Computation, error) {
-	l, err := vsock.Listen(qemu.VsockConfigPort, nil)
+func sevGuesDeviceExists() bool {
+	d, err := client.OpenDevice()
 	if err != nil {
-		return agent.Computation{}, err
+		return false
 	}
-	defer l.Close()
-
-	conn, err := l.Accept()
-	if err != nil {
-		return agent.Computation{}, err
-	}
-	defer conn.Close()
-
-	var buffer []byte
-	for {
-		chunk := make([]byte, 1024)
-		n, err := conn.Read(chunk)
-		if err != nil {
-			if err == io.EOF {
-				break
-			}
-			return agent.Computation{}, err
-		}
-		buffer = append(buffer, chunk[:n]...)
-	}
-
-	ac := agent.Computation{
-		AgentConfig: agent.AgentConfig{},
-	}
-	if err := json.Unmarshal(buffer, &ac); err != nil {
-		return agent.Computation{}, err
-	}
-	if ac.AgentConfig.LogLevel == "" {
-		ac.AgentConfig.LogLevel = "info"
-	}
-	if ac.AgentConfig.Port == "" {
-		ac.AgentConfig.Port = defSvcGRPCPort
-	}
-	return ac, nil
+	d.Close()
+	return true
 }

cmd/cli/main.go

@@ -4,71 +4,36 @@ package main
 
 import (
 	"fmt"
-	"log"
 	"os"
+	"os/signal"
 	"path"
+	"syscall"
 
-	mglog "github.com/absmach/magistrala/logger"
 	"github.com/caarlos0/env/v11"
+	"github.com/fatih/color"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 	"github.com/ultravioletrs/cocos/cli"
+	"github.com/ultravioletrs/cocos/pkg/attestation/igvmmeasure"
 	"github.com/ultravioletrs/cocos/pkg/clients/grpc"
-	"github.com/ultravioletrs/cocos/pkg/clients/grpc/agent"
-	"github.com/ultravioletrs/cocos/pkg/sdk"
+	cmd "github.com/virtee/sev-snp-measure-go/sevsnpmeasure/cmd"
 )
 
 const (
-	svcName            = "cli"
-	envPrefixAgentGRPC = "AGENT_GRPC_"
-	completion         = "completion"
-	filePermision      = 0o755
-	cocosDirectory     = ".cocos"
+	svcName              = "cli"
+	envPrefixAgentGRPC   = "AGENT_GRPC_"
+	envPrefixManagerGRPC = "MANAGER_GRPC_"
+	completion           = "completion"
+	filePermision        = 0o755
+	cocosDirectory       = ".cocos"
 )
 
 type config struct {
-	LogLevel string `env:"AGENT_LOG_LEVEL" envDefault:"info"`
+	LogLevel       string `env:"AGENT_LOG_LEVEL" envDefault:"info"`
+	IgvmBinaryPath string `env:"IGVM_BINARY_PATH" envDefault:"./build/igvmmeasure"`
 }
 
 func main() {
-	var cfg config
-	if err := env.Parse(&cfg); err != nil {
-		log.Fatalf("failed to load %s configuration : %s", svcName, err)
-	}
-
-	homePath, err := os.UserHomeDir()
-	if err != nil {
-		log.Fatalf("Error fetching user home directory: %v", err)
-	}
-
-	directoryCachePath := path.Join(homePath, cocosDirectory)
-
-	if err := os.MkdirAll(directoryCachePath, filePermision); err != nil {
-		log.Fatalf("Error while creating directory %s, error: %v", directoryCachePath, err)
-	}
-
-	logger, err := mglog.New(os.Stdout, cfg.LogLevel)
-	if err != nil {
-		log.Fatalf("Error creating logger: %s", err)
-	}
-
-	agentGRPCConfig := grpc.Config{}
-	if err := env.ParseWithOptions(&agentGRPCConfig, env.Options{Prefix: envPrefixAgentGRPC}); err != nil {
-		logger.Error(fmt.Sprintf("failed to load %s gRPC client configuration : %s", svcName, err))
-		return
-	}
-
-	agentGRPCClient, agentClient, err := agent.NewAgentClient(agentGRPCConfig)
-	if err != nil {
-		logger.Error(err.Error())
-		return
-	}
-	defer agentGRPCClient.Close()
-
-	agentSDK := sdk.NewAgentSDK(logger, agentClient)
-
-	cliSVC := cli.New(agentSDK)
-
 	rootCmd := &cobra.Command{
 		Use:   "cocos-cli [command]",
 		Short: "CLI application for CoCos Service API",
@@ -97,9 +62,70 @@ func main() {
 		},
 	}
 
+	signalChan := make(chan os.Signal, 1)
+	signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
+
+	go func() {
+		<-signalChan
+		fmt.Println()
+		rootCmd.Println(color.New(color.FgRed).Sprint("Operation aborted by user!"))
+		os.Exit(2)
+	}()
+
+	var cfg config
+	if err := env.Parse(&cfg); err != nil {
+		message := color.New(color.FgRed).Sprintf("failed to load %s configuration : %s", svcName, err)
+		rootCmd.Println(message)
+		return
+	}
+
+	homePath, err := os.UserHomeDir()
+	if err != nil {
+		message := color.New(color.FgRed).Sprintf("failed to fetch user home directory: %s", err)
+		rootCmd.Println(message)
+		return
+	}
+
+	directoryCachePath := path.Join(homePath, cocosDirectory)
+
+	if err := os.MkdirAll(directoryCachePath, filePermision); err != nil {
+		message := color.New(color.FgRed).Sprintf("failed to create directory %s : %s", directoryCachePath, err)
+		rootCmd.Println(message)
+		return
+	}
+
+	agentGRPCConfig := grpc.AgentClientConfig{}
+	if err := env.ParseWithOptions(&agentGRPCConfig, env.Options{Prefix: envPrefixAgentGRPC}); err != nil {
+		message := color.New(color.FgRed).Sprintf("failed to load %s gRPC client configuration : %s", svcName, err)
+		rootCmd.Println(message)
+		return
+	}
+
+	managerGRPCConfig := grpc.ManagerClientConfig{}
+	if err := env.ParseWithOptions(&managerGRPCConfig, env.Options{Prefix: envPrefixManagerGRPC}); err != nil {
+		message := color.New(color.FgRed).Sprintf("failed to load %s gRPC client configuration : %s", svcName, err)
+		rootCmd.Println(message)
+		return
+	}
+
+	measurement, err := igvmmeasure.NewIgvmMeasurement(cfg.IgvmBinaryPath, os.Stderr, os.Stdout)
+	if err != nil {
+		message := color.New(color.FgRed).Sprintf("failed to initialize measurement: %s", err) // Use %s instead of %w
+		rootCmd.Println(message)
+		return
+	}
+
+	cliSVC := cli.New(agentGRPCConfig, managerGRPCConfig, measurement)
+
+	if err := cliSVC.InitializeAgentSDK(rootCmd); err == nil {
+		defer cliSVC.Close()
+	}
+
+	rootCmd.PersistentFlags().BoolVarP(&cli.Verbose, "verbose", "v", false, "Enable verbose output")
+
 	keysCmd := cliSVC.NewKeysCmd()
 	attestationCmd := cliSVC.NewAttestationCmd()
-	backendCmd := cliSVC.NewBackendCmd()
+	attestationPolicyCmd := cliSVC.NewAttestationPolicyCmd()
 
 	// Agent Commands
 	rootCmd.AddCommand(cliSVC.NewAlgorithmCmd())
@@ -107,14 +133,20 @@ func main() {
 	rootCmd.AddCommand(cliSVC.NewResultsCmd())
 	rootCmd.AddCommand(attestationCmd)
 	rootCmd.AddCommand(cliSVC.NewFileHashCmd())
-	rootCmd.AddCommand(backendCmd)
+	rootCmd.AddCommand(attestationPolicyCmd)
 	rootCmd.AddCommand(keysCmd)
 	rootCmd.AddCommand(cliSVC.NewCABundleCmd(directoryCachePath))
+	rootCmd.AddCommand(cliSVC.NewCreateVMCmd())
+	rootCmd.AddCommand(cliSVC.NewRemoveVMCmd())
 
 	// Attestation commands
 	attestationCmd.AddCommand(cliSVC.NewGetAttestationCmd())
 	attestationCmd.AddCommand(cliSVC.NewValidateAttestationValidationCmd())
 
+	// measure.
+	rootCmd.AddCommand(cmd.NewRootCmd())
+	rootCmd.AddCommand(cliSVC.NewMeasureCmd(cfg.IgvmBinaryPath))
+
 	// Flags
 	keysCmd.PersistentFlags().StringVarP(
 		&cli.KeyType,
@@ -124,12 +156,19 @@ func main() {
 		"User Key type",
 	)
 
-	// Backend information commands
-	backendCmd.AddCommand(cliSVC.NewAddMeasurementCmd())
-	backendCmd.AddCommand(cliSVC.NewAddHostDataCmd())
+	// Attestation Policy commands
+	attestationPolicyCmd.AddCommand(cliSVC.NewAddMeasurementCmd())
+	attestationPolicyCmd.AddCommand(cliSVC.NewAddHostDataCmd())
 
 	if err := rootCmd.Execute(); err != nil {
-		logger.Error(fmt.Sprintf("Command execution failed: %s", err))
+		logErrorCmd(*rootCmd, err)
 		return
 	}
 }
+
+func logErrorCmd(cmd cobra.Command, err error) {
+	boldRed := color.New(color.FgRed, color.Bold)
+	boldRed.Fprintf(cmd.ErrOrStderr(), "\nerror: ")
+
+	fmt.Fprintf(cmd.ErrOrStderr(), "%s\n\n", color.RedString(err.Error()))
+}

cmd/manager/main.go

@@ -17,30 +17,33 @@ import (
 	"github.com/absmach/magistrala/pkg/prometheus"
 	"github.com/absmach/magistrala/pkg/uuid"
 	"github.com/caarlos0/env/v11"
+	"github.com/ultravioletrs/cocos/internal/server"
+	grpcserver "github.com/ultravioletrs/cocos/internal/server/grpc"
 	"github.com/ultravioletrs/cocos/manager"
 	"github.com/ultravioletrs/cocos/manager/api"
-	managerapi "github.com/ultravioletrs/cocos/manager/api/grpc"
+	managergrpc "github.com/ultravioletrs/cocos/manager/api/grpc"
 	"github.com/ultravioletrs/cocos/manager/qemu"
 	"github.com/ultravioletrs/cocos/manager/tracing"
-	"github.com/ultravioletrs/cocos/pkg/clients/grpc"
-	managergrpc "github.com/ultravioletrs/cocos/pkg/clients/grpc/manager"
-	pkgmanager "github.com/ultravioletrs/cocos/pkg/manager"
 	"go.opentelemetry.io/otel/trace"
 	"golang.org/x/sync/errgroup"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
 )
 
 const (
-	svcName       = "manager"
-	envPrefixGRPC = "MANAGER_GRPC_"
-	envPrefixQemu = "MANAGER_QEMU_"
+	svcName          = "manager"
+	envPrefixGRPC    = "MANAGER_GRPC_"
+	envPrefixQemu    = "MANAGER_QEMU_"
+	clientBufferSize = 100
 )
 
 type config struct {
-	LogLevel                 string  `env:"MANAGER_LOG_LEVEL"                  envDefault:"info"`
-	JaegerURL                url.URL `env:"COCOS_JAEGER_URL"                   envDefault:"http://localhost:4318"`
-	TraceRatio               float64 `env:"COCOS_JAEGER_TRACE_RATIO"           envDefault:"1.0"`
-	InstanceID               string  `env:"MANAGER_INSTANCE_ID"                envDefault:""`
-	BackendMeasurementBinary string  `env:"MANAGER_BACKEND_MEASUREMENT_BINARY" envDefault:"../../build"`
+	LogLevel                string  `env:"MANAGER_LOG_LEVEL"                  envDefault:"info"`
+	JaegerURL               url.URL `env:"COCOS_JAEGER_URL"                   envDefault:"http://localhost:4318"`
+	TraceRatio              float64 `env:"COCOS_JAEGER_TRACE_RATIO"           envDefault:"1.0"`
+	InstanceID              string  `env:"MANAGER_INSTANCE_ID"                envDefault:""`
+	AttestationPolicyBinary string  `env:"MANAGER_ATTESTATION_POLICY_BINARY"  envDefault:"../../build"`
+	EosVersion              string  `env:"MANAGER_EOS_VERSION"                envDefault:""`
 }
 
 func main() {
@@ -54,12 +57,16 @@ func main() {
 
 	logger, err := mglog.New(os.Stdout, cfg.LogLevel)
 	if err != nil {
-		log.Fatalf(err.Error())
+		log.Fatal(err.Error())
 	}
 
+	var exitCode int
+	defer mglog.ExitWithError(&exitCode)
+
 	if cfg.InstanceID == "" {
 		if cfg.InstanceID, err = uuid.New().ID(); err != nil {
 			logger.Error(fmt.Sprintf("Failed to generate instance ID: %s", err))
+			exitCode = 1
 			return
 		}
 	}
@@ -78,41 +85,39 @@ func main() {
 	qemuCfg := qemu.Config{}
 	if err := env.ParseWithOptions(&qemuCfg, env.Options{Prefix: envPrefixQemu}); err != nil {
 		logger.Error(fmt.Sprintf("failed to load QEMU configuration: %s", err))
+		exitCode = 1
 		return
 	}
 	args := qemuCfg.ConstructQemuArgs()
 	logger.Info(strings.Join(args, " "))
 
-	managerGRPCConfig := grpc.Config{}
+	managerGRPCConfig := server.ServerConfig{}
 	if err := env.ParseWithOptions(&managerGRPCConfig, env.Options{Prefix: envPrefixGRPC}); err != nil {
 		logger.Error(fmt.Sprintf("failed to load %s gRPC client configuration : %s", svcName, err))
+		exitCode = 1
 		return
 	}
 
-	managerGRPCClient, managerClient, err := managergrpc.NewManagerClient(managerGRPCConfig)
-	if err != nil {
-		logger.Error(err.Error())
-		return
-	}
-	defer managerGRPCClient.Close()
-
-	pc, err := managerClient.Process(ctx)
+	svc, err := newService(logger, tracer, qemuCfg, cfg.AttestationPolicyBinary, cfg.EosVersion)
 	if err != nil {
 		logger.Error(err.Error())
+		exitCode = 1
 		return
 	}
 
-	eventsChan := make(chan *pkgmanager.ClientStreamMessage)
-	svc, err := newService(logger, tracer, qemuCfg, eventsChan, cfg.BackendMeasurementBinary)
-	if err != nil {
-		logger.Error(err.Error())
-		return
+	registerManagerServiceServer := func(srv *grpc.Server) {
+		reflection.Register(srv)
+		manager.RegisterManagerServiceServer(srv, managergrpc.NewServer(svc))
 	}
 
-	mc := managerapi.NewClient(pc, svc, eventsChan)
+	gs := grpcserver.New(ctx, cancel, svcName, managerGRPCConfig, registerManagerServiceServer, logger, nil, nil)
 
 	g.Go(func() error {
-		return mc.Process(ctx, cancel)
+		return gs.Start()
+	})
+
+	g.Go(func() error {
+		return server.StopHandler(ctx, cancel, logger, svcName, gs)
 	})
 
 	if err := g.Wait(); err != nil {
@@ -120,12 +125,11 @@ func main() {
 	}
 }
 
-func newService(logger *slog.Logger, tracer trace.Tracer, qemuCfg qemu.Config, eventsChan chan *pkgmanager.ClientStreamMessage, backendMeasurementPath string) (manager.Service, error) {
-	svc, err := manager.New(qemuCfg, backendMeasurementPath, logger, eventsChan, qemu.NewVM)
+func newService(logger *slog.Logger, tracer trace.Tracer, qemuCfg qemu.Config, attestationPolicyPath string, eosVersion string) (manager.Service, error) {
+	svc, err := manager.New(qemuCfg, attestationPolicyPath, logger, qemu.NewVM, eosVersion)
 	if err != nil {
 		return nil, err
 	}
-	go svc.RetrieveAgentEventsLogs()
 	svc = api.LoggingMiddleware(svc, logger)
 	counter, latency := prometheus.MakeMetrics(svcName, "api")
 	svc = api.MetricsMiddleware(svc, counter, latency)

cmd/manager/start_VM.sh

@@ -1,62 +0,0 @@
-#!/bin/bash
-
-# Set your default values for sudo and sev
-sudo_option=false
-sev_option=false
-
-# Parse command line arguments
-while [[ $# -gt 0 ]]; do
-    key="$1"
-
-    case $key in
-        --sudo)
-            sudo_option=true
-            shift
-            ;;
-        --sev)
-            sev_option=true
-            shift
-            ;;
-        *)
-            echo "Unknown option: $key"
-            exit 1
-            ;;
-    esac
-done
-
-build_qemu_command() {
-    local qemu_command="/usr/bin/qemu-system-x86_64 -enable-kvm -machine q35 -cpu EPYC -smp 4,maxcpus=64 -m 2048M,slots=5,maxmem=30G -drive if=pflash,format=raw,unit=0,file=$MANAGER_QEMU_OVMF_CODE_FILE,readonly=on -drive if=pflash,format=raw,unit=1,file=img/OVMF_VARS.fd -device virtio-scsi-pci,id=scsi,disable-legacy=on,iommu_platform=true -drive file=img/focal-server-cloudimg-amd64.img,if=none,id=disk0,format=qcow2 -device scsi-hd,drive=disk0 -netdev user,id=vmnic,hostfwd=tcp::2222-:22,hostfwd=tcp::9301-:9031,hostfwd=tcp::7020-:7002 -device virtio-net-pci,disable-legacy=on,iommu_platform=true,netdev=vmnic,romfile= -nographic -monitor pty"
-
-    if [ "$sev_option" = true ]; then
-        qemu_command="$qemu_command -object sev-guest,id=sev0,cbitpos=51,reduced-phys-bits=1 -machine memory-encryption=sev0"
-    fi
-
-    echo "$qemu_command"
-}
-
-if [ ! -f "img/OVMF_VARS.fd" ]; then
-    cp "$MANAGER_QEMU_OVMF_VARS_FILE" "img/OVMF_VARS.fd"
-    echo "Copied $MANAGER_QEMU_OVMF_VARS_FILE to img/OVMF_VARS.fd"
-else
-    echo "img/OVMF_VARS.fd already exists. No need to copy."
-fi
-
-echo "Launching VM ..."
-
-qemu_command=$(build_qemu_command)
-echo "$qemu_command"
-
-echo "Mapping CTRL-C to CTRL-]"
-stty intr ^]
-
-if [ "$sudo_option" = true ]; then
-    # Split the command and arguments into an array; << operator is known as a "here string"
-    IFS=" " read -r -a qemu_command_array <<< "$qemu_command"
-    # Treat each element in the array as a separate word, preserving spaces within each element
-    sudo "${qemu_command_array[@]}"
-else
-    $qemu_command
-fi
-
-# Restore the mapping
-stty intr ^c

cmd/manager/xml/dom.xml

@@ -1,62 +0,0 @@
-<domain type="kvm">
-  <name>QEmu-alpine-standard-x86_64</name>
-  <uuid>c7a5fdbd-cdaf-9455-926a-d65c16db1809</uuid>
-  <metadata>
-    <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
-      <libosinfo:os id="http://alpinelinux.org/alpinelinux/3.15"/>
-    </libosinfo:libosinfo>
-  </metadata>
-  <memory unit="KiB">4194304</memory>
-  <currentMemory unit="KiB">4194304</currentMemory>
-  <vcpu placement="static">1</vcpu>
-  <os>
-    <type arch="x86_64" machine="q35">hvm</type>
-    <bootmenu enable="yes"/>
-    <loader readonly="yes" type="pflash">/usr/share/OVMF/OVMF_CODE.fd</loader>
-    <nvram template='/usr/share/OVMF/OVMF_VARS.fd'>./img/OVMF_VARS.fd</nvram>
-    <!-- <boot dev='hd'/> -->
-  </os>
-  <features>
-    <acpi/>
-    <apic/>
-    <vmport state="off"/>
-  </features>
-  <cpu mode="host-passthrough" check="none" migratable="on"/>
-  <clock offset="utc">
-    <timer name="rtc" tickpolicy="catchup"/>
-    <timer name="pit" tickpolicy="delay"/>
-    <timer name="hpet" present="no"/>
-  </clock>
-  <on_poweroff>destroy</on_poweroff>
-  <on_reboot>restart</on_reboot>
-  <on_crash>destroy</on_crash>
-  <pm>
-    <suspend-to-mem enabled="no"/>
-    <suspend-to-disk enabled="no"/>
-  </pm>
-  <devices>
-    <emulator>/usr/bin/qemu-system-x86_64</emulator>
-    <disk type="file" device="disk">
-      <driver name="qemu" type="qcow2" discard="unmap"/>
-      <source file="./img/focal-server-cloudimg-amd64.qcow2"/>
-      <target dev="vda" bus="virtio"/>
-      <address type="pci" domain="0x0000" bus="0x04" slot="0x00" function="0x0"/>
-      <boot order="1"/>
-    </disk>
-    <graphics type="spice" autoport="yes">
-      <listen type="address"/>
-      <image compression="off"/>
-    </graphics>
-    <video>
-      <model type="qxl" ram="65536" vram="65536" vgamem="16384" heads="1" primary="yes"/>
-      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0"/>
-    </video>
-    <interface type="network">
-      <mac address="52:54:00:03:7b:5f"/>
-      <source network="default"/>
-      <model type="virtio"/>
-      <address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
-    </interface>
-  </devices>
-
-</domain>

cmd/manager/xml/pool.xml

@@ -1,6 +0,0 @@
-<pool type="dir">
-<name>virtimages</name>
-<target>
-  <path>./img</path>
-</target>
-</pool>

cmd/manager/xml/vol.xml

@@ -1,15 +0,0 @@
-<volume>
-<name>boot.img</name>
-<allocation>0</allocation>
-<capacity unit="G">1</capacity>
-<target>
-  <format type="qcow2"/>
-  <path>./img/boot.img</path>
-  <permissions>
-	<owner>107</owner>
-	<group>107</group>
-	<mode>0744</mode>
-	<label>virt_image_t</label>
-  </permissions>
-</target>
-</volume>

cocos-manager.env

@@ -0,0 +1,61 @@
+# Environment Configuration for Cocos
+
+# Jaeger Tracing
+COCOS_JAEGER_URL=http://localhost:4318
+COCOS_JAEGER_TRACE_RATIO=1.0
+
+# Manager Service Configuration
+MANAGER_INSTANCE_ID=
+MANAGER_ATTESTATION_POLICY_BINARY=../../build
+MANAGER_GRPC_CLIENT_CERT=
+MANAGER_GRPC_CLIENT_KEY=
+MANAGER_GRPC_SERVER_CA_CERTS=
+MANAGER_GRPC_PORT=6101
+MANAGER_GRPC_HOST=0.0.0.0
+MANAGER_GRPC_TIMEOUT=60s
+MANAGER_EOS_VERSION=""
+
+# QEMU Configuration
+MANAGER_QEMU_MEMORY_SIZE=25G
+MANAGER_QEMU_MEMORY_SLOTS=5
+MANAGER_QEMU_MAX_MEMORY=30G
+MANAGER_QEMU_OVMF_CODE_IF=pflash
+MANAGER_QEMU_OVMF_CODE_FORMAT=raw
+MANAGER_QEMU_OVMF_CODE_UNIT=0
+MANAGER_QEMU_OVMF_CODE_FILE=/usr/share/edk2/x64/OVMF_CODE.fd
+MANAGER_QEMU_OVMF_VERSION=edk2-stable202408
+MANAGER_QEMU_OVMF_CODE_READONLY=on
+MANAGER_QEMU_OVMF_VARS_IF=pflash
+MANAGER_QEMU_OVMF_VARS_FORMAT=raw
+MANAGER_QEMU_OVMF_VARS_UNIT=1
+MANAGER_QEMU_OVMF_VARS_FILE=/usr/share/edk2/x64/OVMF_VARS.fd
+MANAGER_QEMU_NETDEV_ID=vmnic
+MANAGER_QEMU_HOST_FWD_AGENT=7020
+MANAGER_QEMU_GUEST_FWD_AGENT=7002
+MANAGER_QEMU_VIRTIO_NET_PCI_DISABLE_LEGACY=on
+MANAGER_QEMU_VIRTIO_NET_PCI_IOMMU_PLATFORM=true
+MANAGER_QEMU_VIRTIO_NET_PCI_ADDR=0x2
+MANAGER_QEMU_VIRTIO_NET_PCI_ROMFILE=
+MANAGER_QEMU_DISK_IMG_KERNEL_FILE=/etc/cocos/bzImage
+MANAGER_QEMU_DISK_IMG_ROOTFS_FILE=/etc/cocos/rootfs.cpio.gz
+MANAGER_QEMU_SEV_ID=sev0
+MANAGER_QEMU_SEV_CBITPOS=51
+MANAGER_QEMU_SEV_REDUCED_PHYS_BITS=1
+MANAGER_QEMU_HOST_DATA=
+MANAGER_QEMU_VSOCK_ID=vhost-vsock-pci0
+MANAGER_QEMU_VSOCK_GUEST_CID=3
+MANAGER_QEMU_VSOCK_VNC=0
+MANAGER_QEMU_BIN_PATH=qemu-system-x86_64
+MANAGER_QEMU_USE_SUDO=true
+MANAGER_QEMU_ENABLE_SEV=false
+MANAGER_QEMU_ENABLE_SEV_SNP=false
+MANAGER_QEMU_IGVM_FILE=/etc/cocos/coconut-qemu.igvm
+MANAGER_QEMU_ENABLE_KVM=true
+MANAGER_QEMU_MACHINE=q35
+MANAGER_QEMU_CPU=EPYC
+MANAGER_QEMU_SMP_COUNT=4
+MANAGER_QEMU_SMP_MAXCPUS=16
+MANAGER_QEMU_MEM_ID=ram1
+MANAGER_QEMU_NO_GRAPHIC=true
+MANAGER_QEMU_MONITOR=pty
+MANAGER_QEMU_HOST_FWD_RANGE=6100-6200