Add virtual machine creation

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

.gitignore

@@ -0,0 +1,4 @@
+build
+cmd/manager/img
+cmd/manager/iso
+

README.md

@@ -46,3 +46,18 @@ To see the change in action, run
 ```
 curl -i -X POST -H "Content-Type: application/json" localhost:9022/mfxkit -d '{"secret":"secret2"}'
 ```
+
+## cURL
+```sh
+curl -i -X POST -H "Content-Type: application/json" localhost:9021/mfxkit -d '{"secret":"secret"}'
+```
+
+## Virsh
+
+```sh
+virsh undefine QEmu-alpine-standard-x86_64
+virsh shutdown QEmu-alpine-standard-x86_64
+virsh destroy QEmu-alpine-standard-x86_64
+rm -rf ~/go/src/github.com/ultravioletrs/cocosvm/cmd/manager/img/boot.img
+virsh pool-destroy --pool virtimages
+```

manager/libvirt.go

@@ -0,0 +1,83 @@
+package manager
+
+import "github.com/digitalocean/go-libvirt"
+
+const poolXML string = `
+<pool type="dir">
+<name>virtimages</name>
+<target>
+  <path>/home/darko/go/src/github.com/ultravioletrs/cocosvm/cmd/manager/img</path>
+</target>
+</pool>
+`
+const volXML string = `
+<volume>
+<name>boot.img</name>
+<allocation>0</allocation>
+<capacity unit="T">1</capacity>
+<target>
+  <path>/home/darko/go/src/github.com/ultravioletrs/cocosvm/cmd/manager/img/boot.img</path>
+  <permissions>
+	<owner>107</owner>
+	<group>107</group>
+	<mode>0744</mode>
+	<label>virt_image_t</label>
+  </permissions>
+</target>
+</volume>
+`
+
+const domXML string = `
+<domain type='qemu'>
+  <name>QEmu-alpine-standard-x86_64</name>
+  <uuid>c7a5fdbd-cdaf-9455-926a-d65c16db1809</uuid>
+  <memory>219200</memory>
+  <currentMemory>219200</currentMemory>
+  <vcpu>2</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+    <boot dev='cdrom'/>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='cdrom'>
+      <source file='/home/darko/go/src/github.com/ultravioletrs/cocosvm/cmd/manager/iso/alpine-standard-3.17.2-x86_64.iso'/>
+      <target dev='hdc'/>
+      <readonly/>
+    </disk>
+    <disk type='file' device='disk'>
+      <source file='/home/darko/go/src/github.com/ultravioletrs/cocosvm/cmd/manager/img/boot.img'/>
+      <target dev='hda'/>
+    </disk>
+    <interface type='network'>
+      <source network='default'/>
+    </interface>
+    <graphics type='vnc' port='-1'/>
+  </devices>
+</domain>
+`
+
+func createDomain(libvirtConn *libvirt.Libvirt, poolXML string, volXML string, domXML string) (libvirt.Domain, error) {
+	pool, err := libvirtConn.StoragePoolCreateXML(poolXML, 0)
+	if err != nil {
+		return libvirt.Domain{}, err
+	}
+
+	vol, err := libvirtConn.StorageVolCreateXML(pool, volXML, 0)
+	if err != nil {
+		return libvirt.Domain{}, err
+	}
+	_ = vol
+
+	dom, err := libvirtConn.DomainDefineXMLFlags(domXML, 0)
+	if err != nil {
+		return libvirt.Domain{}, err
+	}
+
+	err = libvirtConn.DomainCreate(dom)
+	if err != nil {
+		return libvirt.Domain{}, err
+	}
+
+	return dom, nil
+}

manager/service.go

@@ -42,22 +42,14 @@ func New(secret string, libvirtConn *libvirt.Libvirt) Service {
 }
 
 func (ks *managerService) Ping(secret string) (string, error) {
+	dom, err := createDomain(ks.libvirt, poolXML, volXML, domXML)
+	if err != nil {
+		return "", ErrMalformedEntity
+	}
+	_ = dom
+
 	if ks.secret != secret {
 		return "", ErrUnauthorizedAccess
 	}
 	return "Hello World :)", nil
 }
-
-func (ks *managerService) CreateDomain(XML string) (libvirt.Domain, error) {
-	dom, err := ks.libvirt.DomainDefineXMLFlags(XML, 0)
-	if err != nil {
-		return libvirt.Domain{}, err
-	}
-
-	err = ks.libvirt.DomainCreate(dom)
-	if err != nil {
-		return libvirt.Domain{}, err
-	}
-
-	return dom, nil
-}