/!\ WARNING: This repository is no longer active. GOCA development happens in the main OpenNebula repository: https://github.com/OpenNebula/one/tree/master/src/oca/go/src/goca

goca

Go bindings for OpenNebula (incomplete).

Description

This is the Go API for OpenNebula that is being used in the Docker Machine OpenNebula Driver.

It does not cover all the OpenNebula resources but if has the necessary foundations so that adding new resources should be a simple task.

Currently only these components have been developed:

• goca: Main abstraction for the XML objects and XML-RPC client
• VM: Virtual Machine Management
• Image: Image Management
• Template: Template Management
• TemplateBuilder: Template Building (creates an OpenNebula template string)

Examples

This example demonstrates how get the information of a running VM, print its name, and power it off. It then builds a new OpenNebula template and prints its string representation.

    package main

    import (
        "fmt"
        "github.com/OpenNebula/goca"
        "log"
        "os"
        "strconv"
    )

    func main() {
        id, _ := strconv.Atoi(os.Args[1])

        vm := goca.NewVM(uint(id))

        err := vm.Info()
        if err != nil {
            log.Fatal(err)
        }

        name, _ := vm.XPath("/VM/NAME")
        if err != nil {
            log.Fatal(err)
        }

        fmt.Println(name)

        // Poweroff the VM
        err = vm.PoweroffHard()
        if err != nil {
            log.Fatal(err)
        }

        // Create a new Template
        template := goca.NewTemplateBuilder()

        template.AddValue("cpu", 1)
        template.AddValue("memory", "64")
        vector := template.NewVector("disk")
        vector.AddValue("image_id", "119")
        vector.AddValue("dev_prefix", "vd")
        vector = template.NewVector("nic")
        vector.AddValue("network_id", "3")
        vector.AddValue("model", "virtio")
        template.AddValue("vcpu", "2")

        fmt.Println(template)
    }