wip: b2d import

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

drivers/virtualbox/disk.go

@@ -0,0 +1,46 @@
+package virtualbox
+
+import (
+	"bufio"
+	"io"
+	"strings"
+)
+
+type VirtualDisk struct {
+	UUID string
+	Path string
+}
+
+func parseDiskInfo(r io.Reader) (*VirtualDisk, error) {
+	s := bufio.NewScanner(r)
+	disk := &VirtualDisk{}
+	for s.Scan() {
+		line := s.Text()
+		if line == "" {
+			continue
+		}
+		res := reEqualLine.FindStringSubmatch(line)
+		if res == nil {
+			continue
+		}
+		switch key, val := res[1], res[2]; key {
+		case "SATA-1-0":
+			disk.Path = val
+		case "SATA-ImageUUID-1-0":
+			disk.UUID = val
+		}
+	}
+	if err := s.Err(); err != nil {
+		return nil, err
+	}
+	return disk, nil
+}
+
+func getVMDiskInfo(name string) (*VirtualDisk, error) {
+	out, err := vbmOut("showvminfo", name, "--machinereadable")
+	if err != nil {
+		return nil, err
+	}
+	r := strings.NewReader(out)
+	return parseDiskInfo(r)
+}

drivers/virtualbox/disk_test.go

@@ -0,0 +1,36 @@
+package virtualbox
+
+import (
+	"strings"
+	"testing"
+)
+
+var (
+	testDiskInfoText = `
+storagecontrollerbootable0="on"
+"SATA-0-0"="/home/ehazlett/.boot2docker/boot2docker.iso"
+"SATA-IsEjected"="off"
+"SATA-1-0"="/home/ehazlett/vm/test/disk.vmdk"
+"SATA-ImageUUID-1-0"="12345-abcdefg"
+"SATA-2-0"="none"
+nic1="nat"
+    `
+)
+
+func TestVMDiskInfo(t *testing.T) {
+	r := strings.NewReader(testDiskInfoText)
+	disk, err := parseDiskInfo(r)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	diskPath := "/home/ehazlett/vm/test/disk.vmdk"
+	diskUUID := "12345-abcdefg"
+	if disk.Path != diskPath {
+		t.Fatalf("expected disk path %s", diskPath)
+	}
+
+	if disk.UUID != diskUUID {
+		t.Fatalf("expected disk uuid %s", diskUUID)
+	}
+}

drivers/virtualbox/vbm.go

@@ -18,6 +18,7 @@ var (
 	reVMNameUUID      = regexp.MustCompile(`"(.+)" {([0-9a-f-]+)}`)
 	reVMInfoLine      = regexp.MustCompile(`(?:"(.+)"|(.+))=(?:"(.*)"|(.*))`)
 	reColonLine       = regexp.MustCompile(`(.+):\s+(.*)`)
+	reEqualLine       = regexp.MustCompile(`"(.+)"="(.*)"`)
 	reMachineNotFound = regexp.MustCompile(`Could not find a registered machine named '(.+)'`)
 )
 

drivers/virtualbox/virtualbox.go

@@ -30,19 +30,20 @@ const (
 )
 
 type Driver struct {
-	CPU            int
-	MachineName    string
-	SSHUser        string
-	SSHPort        int
-	Memory         int
-	DiskSize       int
-	Boot2DockerURL string
-	CaCertPath     string
-	PrivateKeyPath string
-	SwarmMaster    bool
-	SwarmHost      string
-	SwarmDiscovery string
-	storePath      string
+	CPU                 int
+	MachineName         string
+	SSHUser             string
+	SSHPort             int
+	Memory              int
+	DiskSize            int
+	Boot2DockerURL      string
+	CaCertPath          string
+	PrivateKeyPath      string
+	SwarmMaster         bool
+	SwarmHost           string
+	SwarmDiscovery      string
+	storePath           string
+	Boot2DockerImportVM string
 }
 
 func init() {
@@ -80,6 +81,11 @@ func GetCreateFlags() []cli.Flag {
 			Usage:  "The URL of the boot2docker image. Defaults to the latest available version",
 			Value:  "",
 		},
+		cli.StringFlag{
+			Name:  "virtualbox-import-boot2docker-vm",
+			Usage: "The name of a Boot2Docker VM to import",
+			Value: "",
+		},
 	}
 }
 
@@ -147,6 +153,7 @@ func (d *Driver) SetConfigFromFlags(flags drivers.DriverOptions) error {
 	d.SwarmHost = flags.String("swarm-host")
 	d.SwarmDiscovery = flags.String("swarm-discovery")
 	d.SSHUser = "docker"
+	d.Boot2DockerImportVM = flags.String("virtualbox-import-boot2docker-vm")
 
 	return nil
 }
@@ -170,21 +177,36 @@ func (d *Driver) Create() error {
 		return err
 	}
 
-	log.Infof("Creating SSH key...")
-
 	b2dutils := utils.NewB2dUtils("", "")
 	if err := b2dutils.CopyIsoToMachineDir(d.Boot2DockerURL, d.MachineName); err != nil {
 		return err
 	}
 
-	if err := ssh.GenerateSSHKey(d.GetSSHKeyPath()); err != nil {
-		return err
-	}
-
 	log.Infof("Creating VirtualBox VM...")
 
-	if err := d.generateDiskImage(d.DiskSize); err != nil {
-		return err
+	// import b2d VM if requested
+	if d.Boot2DockerImportVM != "" {
+		log.Debugf("Importing disk image...")
+		if err := d.importB2DVM(d.Boot2DockerImportVM); err != nil {
+			return err
+		}
+
+		log.Debugf("Importing SSH key...")
+		keyPath := filepath.Join(utils.GetHomeDir(), ".ssh", "id_rsa")
+		if err := utils.CopyFile(keyPath, d.GetSSHKeyPath()); err != nil {
+			return err
+		}
+	} else {
+		log.Debugf("Creating disk image...")
+		if err := d.generateDiskImage(d.DiskSize); err != nil {
+			return err
+		}
+
+		log.Infof("Creating SSH key...")
+
+		if err := ssh.GenerateSSHKey(d.GetSSHKeyPath()); err != nil {
+			return err
+		}
 	}
 
 	if err := vbm("createvm",
@@ -594,6 +616,26 @@ func zeroFill(w io.Writer, n int64) error {
 	return nil
 }
 
+func (d Driver) importB2DVM(name string) error {
+	// make sure vm is stopped
+	_ = vbm("controlvm", name, "poweroff")
+
+	diskInfo, err := getVMDiskInfo(name)
+	if err != nil {
+		return err
+	}
+
+	if _, err := os.Stat(diskInfo.Path); err != nil {
+		return err
+	}
+
+	if err := vbm("clonehd", diskInfo.Path, d.diskPath()); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func getAvailableTCPPort() (int, error) {
 	port := 0
 	for i := 0; i <= 10; i++ {