2013-06-11 18:45:52 -04:00
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package virtualbox
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import (
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"bytes"
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"fmt"
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"log"
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"os/exec"
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"regexp"
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"strings"
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"time"
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)
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// A driver is able to talk to VirtualBox and perform certain
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// operations with it.
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type Driver interface {
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// Checks if the VM with the given name is running.
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IsRunning(string) (bool, error)
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// Stop stops a running machine, forcefully.
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Stop(string) error
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// SuppressMessages should do what needs to be done in order to
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// suppress any annoying popups from VirtualBox.
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SuppressMessages() error
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// VBoxManage executes the given VBoxManage command
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VBoxManage(...string) error
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// Verify checks to make sure that this driver should function
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// properly. If there is any indication the driver can't function,
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// this will return an error.
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Verify() error
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// Version reads the version of VirtualBox that is installed.
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Version() (string, error)
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}
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type VBox42Driver struct {
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// This is the path to the "VBoxManage" application.
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VBoxManagePath string
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}
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func (d *VBox42Driver) IsRunning(name string) (bool, error) {
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var stdout bytes.Buffer
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cmd := exec.Command(d.VBoxManagePath, "showvminfo", name, "--machinereadable")
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cmd.Stdout = &stdout
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if err := cmd.Run(); err != nil {
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return false, err
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}
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for _, line := range strings.Split(stdout.String(), "\n") {
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if line == `VMState="running"` {
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return true, nil
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}
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// We consider "stopping" to still be running. We wait for it to
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// be completely stopped or some other state.
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if line == `VMState="stopping"` {
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return true, nil
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}
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}
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return false, nil
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}
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func (d *VBox42Driver) Stop(name string) error {
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if err := d.VBoxManage("controlvm", name, "poweroff"); err != nil {
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return err
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}
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return nil
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}
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func (d *VBox42Driver) SuppressMessages() error {
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extraData := map[string]string{
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"GUI/RegistrationData": "triesLeft=0",
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"GUI/SuppressMessages": "confirmInputCapture,remindAboutAutoCapture,remindAboutMouseIntegrationOff,remindAboutMouseIntegrationOn,remindAboutWrongColorDepth",
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"GUI/UpdateDate": fmt.Sprintf("1 d, %d-01-01, stable", time.Now().Year()+1),
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"GUI/UpdateCheckCount": "60",
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}
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for k, v := range extraData {
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if err := d.VBoxManage("setextradata", "global", k, v); err != nil {
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return err
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}
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}
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return nil
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}
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func (d *VBox42Driver) VBoxManage(args ...string) error {
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var stdout, stderr bytes.Buffer
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log.Printf("Executing VBoxManage: %#v", args)
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cmd := exec.Command(d.VBoxManagePath, args...)
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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err := cmd.Run()
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stdoutString := strings.TrimSpace(stdout.String())
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stderrString := strings.TrimSpace(stderr.String())
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if _, ok := err.(*exec.ExitError); ok {
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err = fmt.Errorf("VBoxManage error: %s", stderrString)
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}
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log.Printf("stdout: %s", stdoutString)
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log.Printf("stderr: %s", stderrString)
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return err
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}
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func (d *VBox42Driver) Verify() error {
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return nil
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}
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2013-06-24 01:44:58 -04:00
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func (d *VBox42Driver) Version() (string, error) {
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var stdout bytes.Buffer
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cmd := exec.Command(d.VBoxManagePath, "--version")
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cmd.Stdout = &stdout
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if err := cmd.Run(); err != nil {
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return "", err
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}
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2013-06-29 16:45:30 -04:00
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log.Printf("VBoxManage --version output: %s", stdout.String())
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versionRe := regexp.MustCompile("[^.0-9]")
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matches := versionRe.Split(stdout.String(), 2)
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if len(matches) == 0 {
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return "", fmt.Errorf("No version found: %s", stdout.String())
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}
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2013-06-29 16:45:30 -04:00
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log.Printf("VirtualBox version: %s", matches[0])
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return matches[0], nil
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}
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