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Darko Draskovic 5030a20af6 Remove redundant agent dir

Signed-off-by: Darko Draskovic <darko.draskovic@gmail.com>

2023-06-12 15:18:18 +02:00

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Agent

Build Agent

On the host machine in the root of agent repository run

go build -o ./bin/cocos-agent -ldflags="-linkmode=external -extldflags=-static -s -w" cmd/agent/main.go

Copy files to virtual drive

Shut down QEmu-alpine-standard-x86_64 virtual machine.

On the host machine

sudo apt-get install libguestfs-tools

QCOW2_PATH=~/go/src/github.com/ultravioletrs/manager/cmd/manager/img/boot.img

HOST_AGENT_BIN_PATH=~/go/src/github.com/ultravioletrs/agent/bin/cocos-agent; \
GUEST_AGENT_BIN_PATH=/root/; \
sudo virt-copy-in -a $QCOW2_PATH $HOST_AGENT_BIN_PATH $GUEST_AGENT_BIN_PATH

HOST_AGENT_SCRIPT_PATH=~/go/src/github.com/ultravioletrs/agent/alpine/agent; \
GUEST_AGENT_SCRIPT_PATH=/etc/init.d/; \
sudo virt-copy-in -a $QCOW2_PATH $HOST_AGENT_SCRIPT_PATH $GUEST_AGENT_SCRIPT_PATH

OpenRC

OpenRC is an Alpine's service manager.

Once the agent script is copied in /etc/init.d/ on the guest system, log into the guest system and run

rc-update add agent default

and reboot.

To see if the service is running, inside Alpine linux run

ps aux | grep cocos

To see if the ports are correctly configured, inside Alpine linux run

netstat -tuln | grep 9031
netstat -tuln | grep 7002

cURL

To check if the cocos-agent deamon is running in the virtual machine Alpine Linux, run on the host

GUEST_ADDR=192.168.122.251:9031

curl -i -X POST -H "Content-Type: application/json" ${GUEST_ADDR}/agent -d '{"secret":"secret"}'

To run a computation

curl -sSi -X POST ${GUEST_ADDR}/run -H "Content-Type: application/json" -d @- <<EOF 
{
  "name": "computation_24",
  "description": "this_computes_the_number_24",
  "datasets": [
    "red", "green", "blue", "black", "white", "grey"
  ],
  "algorithms": [
    "toHSV", "toRGB"
  ],
  "status": "executed",
  "owner": "Hector",
  "dataset_providers": [
    "Maxi", "Idea", "Lidl"
  ],
  "algorithm_providers": [
    "ETF", "FON", "FTN"
  ],
  "result_consumers": [
    "Intesa", "KomBank", "OTP"
  ],
  "ttl": 32,
  "metadata": {}
}
EOF

Interaction with Cocos microservice

If the cocos is running, you can use cocos to send computation request to the agent via gRPC.

NB: you need to run cocos computations microservice with COCOS_COMPUTATIONS_AGENT_GRPC_URL=192.168.122.251:7002, i.e. with the correct address and port of the agent gRPC client running in the VM.

Create computation with

curl -sSi -X POST http://localhost:9000/computations -H "Content-Type: application/json" -d @- <<EOF
{
  "name": "computation_24",
  "description": "this_computes_the_number_24",
  "datasets": [
    "red", "green", "blue", "black", "white", "grey"
  ],
  "algorithms": [
    "toHSV", "toRGB"
  ],
  "status": "executed",
  "owner": "Hector",
  "dataset_providers": [
    "Maxi", "Idea", "Lidl"
  ],
  "algorithm_providers": [
    "ETF", "FON", "FTN"
  ],
  "result_consumers": [
    "Intesa", "KomBank", "OTP"
  ],
  "ttl": 32,
  "metadata": {}
}
EOF

You will get as a response

HTTP/1.1 201 Created
Content-Type: application/json
Location: /computations/9429a679-173e-4c2d-856f-74c92e08ab76
Date: Fri, 19 May 2023 12:30:56 GMT
Content-Length: 0

Note the computation id in the Location header. Set the environmnet variable COMPUTATION_ID=9429a679-173e-4c2d-856f-74c92e08ab76 and run it with

curl -sSi -X POST http://localhost:9000/computations/$COMPUTATION_ID/run

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