packer-cn/builder/vagrant/driver_2_2.go

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package vagrant
import (
"bytes"
"fmt"
"log"
"os"
"os/exec"
"regexp"
"strings"
"github.com/hashicorp/go-version"
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)
const VAGRANT_MIN_VERSION = ">= 2.0.2"
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type Vagrant_2_2_Driver struct {
vagrantBinary string
VagrantCWD string
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}
// Calls "vagrant init"
func (d *Vagrant_2_2_Driver) Init(args []string) error {
_, _, err := d.vagrantCmd(append([]string{"init"}, args...)...)
return err
}
// Calls "vagrant add"
func (d *Vagrant_2_2_Driver) Add(args []string) error {
// vagrant box add partyvm ubuntu-14.04.vmware.box
_, _, err := d.vagrantCmd(append([]string{"box", "add"}, args...)...)
return err
}
// Calls "vagrant up"
func (d *Vagrant_2_2_Driver) Up(args []string) (string, string, error) {
stdout, stderr, err := d.vagrantCmd(append([]string{"up"}, args...)...)
return stdout, stderr, err
}
// Calls "vagrant halt"
func (d *Vagrant_2_2_Driver) Halt(id string) error {
args := []string{"halt"}
if id != "" {
args = append(args, id)
}
_, _, err := d.vagrantCmd(args...)
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return err
}
// Calls "vagrant suspend"
func (d *Vagrant_2_2_Driver) Suspend(id string) error {
args := []string{"suspend"}
if id != "" {
args = append(args, id)
}
_, _, err := d.vagrantCmd(args...)
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return err
}
// Calls "vagrant destroy"
func (d *Vagrant_2_2_Driver) Destroy(id string) error {
args := []string{"destroy", "-f"}
if id != "" {
args = append(args, id)
}
_, _, err := d.vagrantCmd(args...)
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return err
}
// Calls "vagrant package"
func (d *Vagrant_2_2_Driver) Package(args []string) error {
// Ideally we'd pass vagrantCWD into the package command but
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// we have to change directory into the vagrant cwd instead in order to
// work around an upstream bug with the vagrant-libvirt plugin.
// We can stop doing this when
// https://github.com/vagrant-libvirt/vagrant-libvirt/issues/765
// is fixed.
oldDir, _ := os.Getwd()
os.Chdir(d.VagrantCWD)
defer os.Chdir(oldDir)
args = append(args, "--output", "package.box")
_, _, err := d.vagrantCmd(append([]string{"package"}, args...)...)
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return err
}
// Verify makes sure that Vagrant exists at the given path
func (d *Vagrant_2_2_Driver) Verify() error {
vagrantPath, err := exec.LookPath(d.vagrantBinary)
if err != nil {
return fmt.Errorf("Can't find Vagrant binary!")
}
_, err = os.Stat(vagrantPath)
if err != nil {
return fmt.Errorf("Can't find Vagrant binary.")
}
constraints, err := version.NewConstraint(VAGRANT_MIN_VERSION)
if err != nil {
return fmt.Errorf("error parsing vagrant minimum version: %v", err)
}
vers, err := d.Version()
if err != nil {
return fmt.Errorf("error getting virtualbox version: %v", err)
}
v, err := version.NewVersion(vers)
if err != nil {
return fmt.Errorf("Error figuring out Vagrant version.")
}
if !constraints.Check(v) {
return fmt.Errorf("installed Vagrant version must be >=2.0.2")
}
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return nil
}
type VagrantSSHConfig struct {
Hostname string
User string
Port string
UserKnownHostsFile string
StrictHostKeyChecking bool
PasswordAuthentication bool
IdentityFile string
IdentitiesOnly bool
LogLevel string
}
func parseSSHConfig(lines []string, value string) string {
out := ""
for _, line := range lines {
if index := strings.Index(line, value); index != -1 {
out = line[index+len(value):]
}
}
return strings.Trim(out, "\r\n")
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}
func yesno(yn string) bool {
if yn == "no" {
return false
}
return true
}
func (d *Vagrant_2_2_Driver) SSHConfig(id string) (*VagrantSSHConfig, error) {
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// vagrant ssh-config --host 8df7860
args := []string{"ssh-config"}
if id != "" {
args = append(args, id)
}
stdout, _, err := d.vagrantCmd(args...)
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sshConf := &VagrantSSHConfig{}
lines := strings.Split(stdout, "\n")
sshConf.Hostname = parseSSHConfig(lines, "HostName ")
sshConf.User = parseSSHConfig(lines, "User ")
sshConf.Port = parseSSHConfig(lines, "Port ")
sshConf.UserKnownHostsFile = parseSSHConfig(lines, "UserKnownHostsFile ")
sshConf.IdentityFile = parseSSHConfig(lines, "IdentityFile ")
sshConf.LogLevel = parseSSHConfig(lines, "LogLevel ")
// handle the booleans
sshConf.StrictHostKeyChecking = yesno(parseSSHConfig(lines, "StrictHostKeyChecking "))
sshConf.PasswordAuthentication = yesno(parseSSHConfig(lines, "PasswordAuthentication "))
sshConf.IdentitiesOnly = yesno((parseSSHConfig(lines, "IdentitiesOnly ")))
return sshConf, err
}
// Version reads the version of VirtualBox that is installed.
func (d *Vagrant_2_2_Driver) Version() (string, error) {
stdoutString, _, err := d.vagrantCmd([]string{"--version"}...)
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// Example stdout:
// Installed Version: 2.2.3
//
// Vagrant was unable to check for the latest version of Vagrant.
// Please check manually at https://www.vagrantup.com
// Use regex to find version
reg := regexp.MustCompile(`(\d+\.)?(\d+\.)?(\*|\d+)`)
version := reg.FindString(stdoutString)
if version == "" {
return "", err
}
return version, nil
}
func (d *Vagrant_2_2_Driver) vagrantCmd(args ...string) (string, string, error) {
var stdout, stderr bytes.Buffer
log.Printf("Calling Vagrant CLI: %#v", args)
cmd := exec.Command(d.vagrantBinary, args...)
cmd.Env = append(os.Environ(), fmt.Sprintf("VAGRANT_CWD=%s", d.VagrantCWD))
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cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
stdoutString := strings.TrimSpace(stdout.String())
stderrString := strings.TrimSpace(stderr.String())
if _, ok := err.(*exec.ExitError); ok {
err = fmt.Errorf("Vagrant error: %s", stderrString)
}
log.Printf("[vagrant driver] stdout: %s", stdoutString)
log.Printf("[vagrant driver] stderr: %s", stderrString)
return stdoutString, stderrString, err
}