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openstack.go
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openstack.go
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package main
import (
"fmt"
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/openstack"
"github.com/rackspace/gophercloud/openstack/compute/v2/extensions/floatingip"
"github.com/rackspace/gophercloud/openstack/compute/v2/extensions/keypairs"
"github.com/rackspace/gophercloud/openstack/compute/v2/servers"
rimages "github.com/rackspace/gophercloud/openstack/compute/v2/images"
"github.com/rackspace/gophercloud/openstack/imageservice/v2/images"
"github.com/spf13/viper"
"os"
"path/filepath"
"strings"
"io/ioutil"
)
//BootInstanceOS boots a new vm in OpenStack
func BootInstanceOS(vmname string) (TunirVM, error) {
var tvm TunirVM
tvm.VMType = "openstack"
tvm.Hostname = vmname
var userdata []byte
// If no config is found, use the default(s)
viper.SetDefault("OS_REGION_NAME", "RegionOne")
viper.SetDefault("OS_FLAVOR", "m1.medium")
viper.SetDefault("user-data", "")
viper.SetEnvPrefix("OS")
viper.AutomaticEnv()
opts := gophercloud.AuthOptions{
IdentityEndpoint: viper.GetString("OS_AUTH_URL"),
Username: viper.GetString("USERNAME"),
Password: viper.GetString("PASSWORD"),
TenantID: viper.GetString("TENANT_ID"),
}
region := viper.GetString("OS_REGION_NAME")
provider, err := openstack.AuthenticatedClient(opts)
if err != nil {
return tvm, err
}
client, err := openstack.NewComputeV2(provider, gophercloud.EndpointOpts{
Region: region})
if err != nil {
return tvm, err
}
vmflavor := viper.GetString("OS_FLAVOR")
imagename := viper.GetString("OS_IMAGE")
// Now let us find if we have to upload an image
if strings.HasPrefix(imagename, "/") {
// We have a qcow2 file, let us upload.
fmt.Printf("Uploading %s to the server.\n", imagename)
basename := filepath.Base(imagename)
imageName := fmt.Sprintf("tunir-%s", basename)
containerFormat := "qcow2"
prop := make(map[string]string)
prop["architecture"] = "x86_64"
c, _ := openstack.NewImageServiceV2(provider, gophercloud.EndpointOpts{
Region: region,
})
createResult := images.Create(c, images.CreateOpts{Name: imageName,
Properties: prop,
ContainerFormat: "bare",
DiskFormat: containerFormat})
image, err := createResult.Extract()
check(err)
image, err = images.Get(c, image.ID).Extract()
f1, err := os.Open(imagename)
defer f1.Close()
putImageResult := images.Upload(c, image.ID, f1)
if putImageResult.Err != nil {
// Just stop the job here and get out.
fmt.Println(err)
images.Delete(client, image.ID)
os.Exit(300)
}
// Everything okay.
tvm.ClientImage = image.ID
tvm.CleanImage = true
imagename = imageName
} else {
// We need to still get the Image ID for rebuild work.
image_id, _:= rimages.IDFromName(client, imagename)
tvm.ClientImage = image_id
tvm.CleanImage = false
}
network_id := viper.GetString("OS_NETWORK")
floating_pool := viper.GetString("OS_FLOATING_POOL")
keypair := viper.GetString("OS_KEYPAIR")
security_groups := viper.GetStringSlice("OS_SECURITY_GROUPS")
// Read User-data file if provided
ufile := viper.GetString("user-data")
if ufile != "" {
// We have userdata
userdata, err = ioutil.ReadFile(ufile)
if err!= nil {
fmt.Println("Error reading the user-data file.")
fmt.Println("Going ahead without user-data.")
}
}
sOpts := servers.CreateOpts{
Name: vmname,
FlavorName: vmflavor,
ImageName: imagename,
SecurityGroups: security_groups,
UserData: userdata,
}
sOpts.Networks = []servers.Network{
{
UUID: network_id,
},
}
server, err := servers.Create(client, keypairs.CreateOptsExt{
sOpts,
keypair,
}).Extract()
if err != nil {
fmt.Println("Unable to create server: ", err)
return tvm, err
}
tvm.Server = server
tvm.Client = client
fmt.Printf("Server ID: %s\n", server.ID)
//TODO: Wait for status here
fmt.Println("Let us wait for the server to be in running state.")
servers.WaitForStatus(client, server.ID, "ACTIVE", 60)
fmt.Println("Time to assign a floating pointip.")
fp, err := floatingip.Create(client, floatingip.CreateOpts{Pool: floating_pool}).Extract()
if err != nil {
// There is an error in getting floating IP
fmt.Println(err)
tvm.Delete()
tvm.Server = nil
return tvm, err
}
// Now let us assign a floating IP
floatingip.AssociateInstance(client, floatingip.AssociateOpts{
ServerID: server.ID,
FloatingIP: fp.IP,
})
tvm.FloatingIPID = fp.ID
tvm.IP = fp.IP
tvm.KeyFile = viper.GetString("key")
tvm.Port = "22"
return tvm, nil
}