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driver_esx5.go
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driver_esx5.go
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package iso
import (
"bufio"
"bytes"
gossh "code.google.com/p/go.crypto/ssh"
"encoding/csv"
"errors"
"fmt"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/communicator/ssh"
"github.com/mitchellh/packer/packer"
"io"
"log"
"net"
"os"
"path/filepath"
"strings"
"syscall"
"time"
)
// ESX5 driver talks to an ESXi5 hypervisor remotely over SSH to build
// virtual machines. This driver can only manage one machine at a time.
type ESX5Driver struct {
Host string
Port uint
Username string
Password string
Datastore string
comm packer.Communicator
outputDir string
}
func (d *ESX5Driver) Clone(dst, src string) error {
return errors.New("Cloning is not supported with the ESX driver.")
}
func (d *ESX5Driver) CompactDisk(diskPathLocal string) error {
return nil
}
func (d *ESX5Driver) CreateDisk(diskPathLocal string, size string, typeId string) error {
diskPath := d.datastorePath(diskPathLocal)
return d.sh("vmkfstools", "-c", size, "-d", typeId, "-a", "lsilogic", diskPath)
}
func (d *ESX5Driver) IsRunning(vmxPathLocal string) (bool, error) {
vmxPath := filepath.Join(d.outputDir, filepath.Base(vmxPathLocal))
state, err := d.run(nil, "vim-cmd", "vmsvc/power.getstate", vmxPath)
if err != nil {
return false, err
}
return strings.Contains(state, "Powered on"), nil
}
func (d *ESX5Driver) Start(vmxPathLocal string, headless bool) error {
vmxPath := filepath.Join(d.outputDir, filepath.Base(vmxPathLocal))
return d.sh("vim-cmd", "vmsvc/power.on", vmxPath)
}
func (d *ESX5Driver) Stop(vmxPathLocal string) error {
vmxPath := filepath.Join(d.outputDir, filepath.Base(vmxPathLocal))
return d.sh("vim-cmd", "vmsvc/power.off", vmxPath)
}
func (d *ESX5Driver) Register(vmxPathLocal string) error {
vmxPath := filepath.Join(d.outputDir, filepath.Base(vmxPathLocal))
if err := d.upload(vmxPath, vmxPathLocal); err != nil {
return err
}
return d.sh("vim-cmd", "solo/registervm", vmxPath)
}
func (d *ESX5Driver) SuppressMessages(vmxPath string) error {
return nil
}
func (d *ESX5Driver) Unregister(vmxPathLocal string) error {
vmxPath := filepath.Join(d.outputDir, filepath.Base(vmxPathLocal))
return d.sh("vim-cmd", "vmsvc/unregister", vmxPath)
}
func (d *ESX5Driver) UploadISO(localPath string) (string, error) {
cacheRoot, _ := filepath.Abs(".")
targetFile, err := filepath.Rel(cacheRoot, localPath)
if err != nil {
return "", err
}
finalPath := d.datastorePath(targetFile)
if err := d.mkdir(filepath.Dir(finalPath)); err != nil {
return "", err
}
if err := d.upload(finalPath, localPath); err != nil {
return "", err
}
return finalPath, nil
}
func (d *ESX5Driver) ToolsIsoPath(string) string {
return ""
}
func (d *ESX5Driver) DhcpLeasesPath(string) string {
return ""
}
func (d *ESX5Driver) Verify() error {
checks := []func() error{
d.connect,
d.checkSystemVersion,
d.checkGuestIPHackEnabled,
}
for _, check := range checks {
if err := check(); err != nil {
return err
}
}
return nil
}
func (d *ESX5Driver) HostIP() (string, error) {
conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", d.Host, d.Port))
defer conn.Close()
if err != nil {
return "", err
}
host, _, err := net.SplitHostPort(conn.LocalAddr().String())
return host, err
}
func (d *ESX5Driver) VNCAddress(portMin, portMax uint) (string, uint) {
var vncPort uint
// TODO(dougm) use esxcli network ip connection list
for port := portMin; port <= portMax; port++ {
address := fmt.Sprintf("%s:%d", d.Host, port)
log.Printf("Trying address: %s...", address)
l, err := net.DialTimeout("tcp", address, 1*time.Second)
if err == nil {
log.Printf("%s in use", address)
l.Close()
} else if e, ok := err.(*net.OpError); ok {
if e.Err == syscall.ECONNREFUSED {
// then port should be available for listening
vncPort = port
break
} else if e.Timeout() {
log.Printf("Timeout connecting to: %s (check firewall rules)", address)
}
}
}
return d.Host, vncPort
}
func (d *ESX5Driver) SSHAddress(state multistep.StateBag) (string, error) {
config := state.Get("config").(*config)
if address, ok := state.GetOk("vm_address"); ok {
return address.(string), nil
}
r, err := d.esxcli("network", "vm", "list")
if err != nil {
return "", err
}
record, err := r.find("Name", config.VMName)
if err != nil {
return "", err
}
wid := record["WorldID"]
if wid == "" {
return "", errors.New("VM WorldID not found")
}
r, err = d.esxcli("network", "vm", "port", "list", "-w", wid)
if err != nil {
return "", err
}
record, err = r.read()
if err != nil {
return "", err
}
if record["IPAddress"] == "0.0.0.0" {
return "", errors.New("VM network port found, but no IP address")
}
address := fmt.Sprintf("%s:%d", record["IPAddress"], config.SSHPort)
state.Put("vm_address", address)
return address, nil
}
//-------------------------------------------------------------------
// OutputDir implementation
//-------------------------------------------------------------------
func (d *ESX5Driver) DirExists() (bool, error) {
err := d.sh("test", "-e", d.outputDir)
return err == nil, nil
}
func (d *ESX5Driver) ListFiles() ([]string, error) {
stdout, err := d.ssh("ls -1p "+d.outputDir, nil)
if err != nil {
return nil, err
}
files := make([]string, 0, 10)
reader := bufio.NewReader(stdout)
for {
line, _, err := reader.ReadLine()
if err == io.EOF {
break
}
if line[len(line)-1] == '/' {
continue
}
files = append(files, filepath.Join(d.outputDir, string(line)))
}
return files, nil
}
func (d *ESX5Driver) MkdirAll() error {
return d.mkdir(d.outputDir)
}
func (d *ESX5Driver) Remove(path string) error {
return d.sh("rm", path)
}
func (d *ESX5Driver) RemoveAll() error {
return d.sh("rm", "-rf", d.outputDir)
}
func (d *ESX5Driver) SetOutputDir(path string) {
d.outputDir = d.datastorePath(path)
}
func (d *ESX5Driver) String() string {
return d.outputDir
}
func (d *ESX5Driver) datastorePath(path string) string {
return filepath.Join("/vmfs/volumes", d.Datastore, path)
}
func (d *ESX5Driver) connect() error {
address := fmt.Sprintf("%s:%d", d.Host, d.Port)
auth := []gossh.ClientAuth{
gossh.ClientAuthPassword(ssh.Password(d.Password)),
gossh.ClientAuthKeyboardInteractive(
ssh.PasswordKeyboardInteractive(d.Password)),
}
// TODO(dougm) KeyPath support
sshConfig := &ssh.Config{
Connection: ssh.ConnectFunc("tcp", address),
SSHConfig: &gossh.ClientConfig{
User: d.Username,
Auth: auth,
},
NoPty: true,
}
comm, err := ssh.New(sshConfig)
if err != nil {
return err
}
d.comm = comm
return nil
}
func (d *ESX5Driver) checkSystemVersion() error {
r, err := d.esxcli("system", "version", "get")
if err != nil {
return err
}
record, err := r.read()
if err != nil {
return err
}
log.Printf("Connected to %s %s %s", record["Product"],
record["Version"], record["Build"])
return nil
}
func (d *ESX5Driver) checkGuestIPHackEnabled() error {
r, err := d.esxcli("system", "settings", "advanced", "list", "-o", "/Net/GuestIPHack")
if err != nil {
return err
}
record, err := r.read()
if err != nil {
return err
}
if record["IntValue"] != "1" {
return errors.New(
"GuestIPHack is required, enable by running this on the ESX machine:\n" +
"esxcli system settings advanced set -o /Net/GuestIPHack -i 1")
}
return nil
}
func (d *ESX5Driver) mkdir(path string) error {
return d.sh("mkdir", "-p", path)
}
func (d *ESX5Driver) upload(dst, src string) error {
f, err := os.Open(src)
if err != nil {
return err
}
defer f.Close()
return d.comm.Upload(dst, f)
}
func (d *ESX5Driver) verifyChecksum(ctype string, hash string, file string) bool {
stdin := bytes.NewBufferString(fmt.Sprintf("%s %s", hash, file))
_, err := d.run(stdin, fmt.Sprintf("%ssum", ctype), "-c")
if err != nil {
return false
}
return true
}
func (d *ESX5Driver) ssh(command string, stdin io.Reader) (*bytes.Buffer, error) {
var stdout, stderr bytes.Buffer
cmd := &packer.RemoteCmd{
Command: command,
Stdout: &stdout,
Stderr: &stderr,
Stdin: stdin,
}
err := d.comm.Start(cmd)
if err != nil {
return nil, err
}
cmd.Wait()
if cmd.ExitStatus != 0 {
err = fmt.Errorf("'%s'\n\nStdout: %s\n\nStderr: %s",
cmd.Command, stdout.String(), stderr.String())
return nil, err
}
return &stdout, nil
}
func (d *ESX5Driver) run(stdin io.Reader, args ...string) (string, error) {
stdout, err := d.ssh(strings.Join(args, " "), stdin)
if err != nil {
return "", err
}
return stdout.String(), nil
}
func (d *ESX5Driver) sh(args ...string) error {
_, err := d.run(nil, args...)
return err
}
func (d *ESX5Driver) esxcli(args ...string) (*esxcliReader, error) {
stdout, err := d.ssh("esxcli --formatter csv "+strings.Join(args, " "), nil)
if err != nil {
return nil, err
}
r := csv.NewReader(bytes.NewReader(stdout.Bytes()))
r.TrailingComma = true
header, err := r.Read()
if err != nil {
return nil, err
}
return &esxcliReader{r, header}, nil
}
type esxcliReader struct {
cr *csv.Reader
header []string
}
func (r *esxcliReader) read() (map[string]string, error) {
fields, err := r.cr.Read()
if err != nil {
return nil, err
}
record := map[string]string{}
for i, v := range fields {
record[r.header[i]] = v
}
return record, nil
}
func (r *esxcliReader) find(key, val string) (map[string]string, error) {
for {
record, err := r.read()
if err != nil {
return nil, err
}
if record[key] == val {
return record, nil
}
}
}