builder/parallels: Added compatibility with Parallels Desktop 10

builder/parallels/common/driver.go

 package common
 
 import (
+	"fmt"
 	"log"
 	"os/exec"
+	"runtime"
+	"strings"
 )
 
 // A driver is able to talk to Parallels and perform certain
@@ -43,7 +46,9 @@ type Driver interface {
 }
 
 func NewDriver() (Driver, error) {
+	var drivers map[string]Driver
 	var prlctlPath string
+	var supportedVersions []string
 
 	if runtime.GOOS != "darwin" {
 		return nil, fmt.Errorf(
@@ -59,10 +64,27 @@ func NewDriver() (Driver, error) {
 	}
 
 	log.Printf("prlctl path: %s", prlctlPath)
-	driver := &Parallels9Driver{prlctlPath}
-	if err := driver.Verify(); err != nil {
-		return nil, err
+
+	drivers = map[string]Driver{
+		"10": &Parallels10Driver{
+			Parallels9Driver: Parallels9Driver{
+				PrlctlPath: prlctlPath,
+			},
+		},
+		"9": &Parallels9Driver{
+			PrlctlPath: prlctlPath,
+		},
+	}
+
+	for v, d := range drivers {
+		version, _ := d.Version()
+		if strings.HasPrefix(version, v) {
+			return d, nil
+		}
+		supportedVersions = append(supportedVersions, v)
 	}
 
-	return driver, nil
+	return nil, fmt.Errorf(
+		"Unable to initialize any driver. Supported Parallels Desktop versions: "+
+			"%s\n", strings.Join(supportedVersions, ", "))
 }

builder/parallels/common/driver_10.go

+package common
+
+// Parallels10Driver are inherited from Parallels9Driver.
+type Parallels10Driver struct {
+	Parallels9Driver
+}

builder/parallels/common/driver_9.go

@@ -13,7 +13,6 @@ import (
 	"github.com/going/toolkit/xmlpath"
 )
 
-// Driver supporting Parallels Desktop for Mac v. 9 & 10
 type Parallels9Driver struct {
 	// This is the path to the "prlctl" application.
 	PrlctlPath string
@@ -72,6 +71,20 @@ func getConfigValueFromXpath(path, xpath string) (string, error) {
 	return value, nil
 }
 
+// Finds an application bundle by identifier (for "darwin" platform only)
+func getAppPath(bundleId string) (string, error) {
+	cmd := exec.Command("mdfind", "kMDItemCFBundleIdentifier ==", bundleId)
+	out, err := cmd.Output()
+	if err != nil {
+		return "", err
+	}
+	if string(out) == "" {
+		return "", fmt.Errorf(
+			"Could not detect Parallels Desktop! Make sure it is properly installed.")
+	}
+	return string(out), nil
+}
+
 func (d *Parallels9Driver) IsRunning(name string) (bool, error) {
 	var stdout bytes.Buffer
 
@@ -136,32 +149,24 @@ func (d *Parallels9Driver) Prlctl(args ...string) error {
 }
 
 func (d *Parallels9Driver) Verify() error {
-	version, _ := d.Version()
-	if !(strings.HasPrefix(version, "9.") || strings.HasPrefix(version, "10.")) {
-		return fmt.Errorf("The packer-parallels builder plugin only supports Parallels Desktop v. 9 & 10. You have: %s!\n", version)
-	}
 	return nil
 }
 
 func (d *Parallels9Driver) Version() (string, error) {
-	var stdout bytes.Buffer
-
-	cmd := exec.Command(d.PrlctlPath, "--version")
-	cmd.Stdout = &stdout
-	if err := cmd.Run(); err != nil {
+	out, err := exec.Command(d.PrlctlPath, "--version").Output()
+	if err != nil {
 		return "", err
 	}
 
-	versionOutput := strings.TrimSpace(stdout.String())
-	re := regexp.MustCompile("prlctl version ([0-9\\.]+)")
-	verMatch := re.FindAllStringSubmatch(versionOutput, 1)
-
-	if len(verMatch) != 1 {
-		return "", fmt.Errorf("prlctl version not found!\n")
+	versionRe := regexp.MustCompile(`prlctl version (\d+\.\d+.\d+)`)
+	matches := versionRe.FindStringSubmatch(string(out))
+	if matches == nil {
+		return "", fmt.Errorf(
+			"Could not find Parallels Desktop version in output:\n%s", string(out))
 	}
 
-	version := verMatch[0][1]
-	log.Printf("prlctl version: %s\n", version)
+	version := matches[1]
+	log.Printf("Parallels Desktop version: %s", version)
 	return version, nil
 }