virtigo/importDomain.go

package main

import (
	"errors"
	"fmt"
	"net/http"

	pb "go.wit.com/lib/protobuf/virtbuf"
	"go.wit.com/log"
)

// attempts to create a new virtual machine

func importDomain(w http.ResponseWriter, r *http.Request) (string, error) {
	name := r.URL.Query().Get("domainName")
	if name == "" {
		result := "start failed. name is blank " + r.URL.Path
		log.Warn(result)
		fmt.Fprintln(w, result)
		return "", errors.New(result)
	}
	log.Warn("importDomain() START name is", name)
	fmt.Fprintln(w, "importDomain() START name is", name)

	d := me.cluster.FindDropletByName(name)
	if d == nil {
		result := "libvirt domain " + name + " could not be found on any hypervisor"
		log.Info(result)
		fmt.Fprintln(w, result)
		return result, errors.New(result)
	}
	start := d.SprintHeader()
	if d.LocalOnly == "" {
		result := start + " LocalOnly is blank. THIS SHOULD NEVER HAPPEN."
		log.Log(WARN, result)
		fmt.Fprintln(w, result)
		return result, errors.New(result)
	}
	result := start + " local FOUND! LocalOnly = " + d.LocalOnly
	log.Log(WARN, result)
	fmt.Fprintln(w, result)
	if d.Current.State != pb.DropletState_OFF {
		result := "error: libvirt domain " + name + " is not off"
		log.Info(result)
		fmt.Fprintln(w, result)
		return result, errors.New(result)
	}
	result = start + "about to attempt import "
	result += "(" + d.LocalOnly + ")"
	result += " " + d.Hostname
	log.Log(WARN, result)
	fmt.Fprintln(w, result)

	h := findHypervisorByName(d.Current.Hypervisor)
	if h == nil {
		result = "unknown hypervisor = " + d.Current.Hypervisor
		log.Log(WARN, result)
		fmt.Fprintln(w, result)
		return result, errors.New(result)
	}
	result = "finally ready to h.start(d)"
	log.Log(WARN, result)
	fmt.Fprintln(w, result)

	ok, output := h.start(d)
	if ok {
		return result + output, nil
	}
	return result + output, errors.New("start " + name + " on hypervisor " + h.pb.Hostname)
}