builder/googlecompute: driver and create instance tests

builder/googlecompute/api.go

@@ -20,6 +20,7 @@ type GoogleComputeClient struct {
 
 // InstanceConfig represents a GCE instance configuration.
 // Used for creating machine instances.
+/*
 type InstanceConfig struct {
 	Description       string
 	Image             string
@@ -30,6 +31,7 @@ type InstanceConfig struct {
 	ServiceAccounts   []*compute.ServiceAccount
 	Tags              *compute.Tags
 }
+*/
 
 // New initializes and returns a *GoogleComputeClient.
 //
@@ -41,7 +43,7 @@ func New(projectId string, zone string, c *clientSecrets, pemKey []byte) (*Googl
 		Zone:      zone,
 	}
 	// Get the access token.
-	t := jwt.NewToken(c.Web.ClientEmail, scopes(), pemKey)
+	t := jwt.NewToken(c.Web.ClientEmail, "", pemKey)
 	t.ClaimSet.Aud = c.Web.TokenURI
 	httpClient := &http.Client{}
 	token, err := t.Assert(httpClient)
@@ -50,7 +52,7 @@ func New(projectId string, zone string, c *clientSecrets, pemKey []byte) (*Googl
 	}
 	config := &oauth.Config{
 		ClientId: c.Web.ClientId,
-		Scope:    scopes(),
+		Scope:    "",
 		TokenURL: c.Web.TokenURI,
 		AuthURL:  c.Web.AuthURI,
 	}
@@ -64,83 +66,6 @@ func New(projectId string, zone string, c *clientSecrets, pemKey []byte) (*Googl
 	return googleComputeClient, nil
 }
 
-// GetZone returns a *compute.Zone representing the named zone.
-func (g *GoogleComputeClient) GetZone(name string) (*compute.Zone, error) {
-	zoneGetCall := g.Service.Zones.Get(g.ProjectId, name)
-	zone, err := zoneGetCall.Do()
-	if err != nil {
-		return nil, err
-	}
-	return zone, nil
-}
-
-// GetMachineType returns a *compute.MachineType representing the named machine type.
-func (g *GoogleComputeClient) GetMachineType(name, zone string) (*compute.MachineType, error) {
-	machineTypesGetCall := g.Service.MachineTypes.Get(g.ProjectId, zone, name)
-	machineType, err := machineTypesGetCall.Do()
-	if err != nil {
-		return nil, err
-	}
-	if machineType.Deprecated == nil {
-		return machineType, nil
-	}
-	return nil, errors.New("Machine Type does not exist: " + name)
-}
-
-// GetImage returns a *compute.Image representing the named image.
-func (g *GoogleComputeClient) GetImage(name string) (*compute.Image, error) {
-	var err error
-	var image *compute.Image
-	projects := []string{g.ProjectId, "debian-cloud", "centos-cloud"}
-	for _, project := range projects {
-		imagesGetCall := g.Service.Images.Get(project, name)
-		image, err = imagesGetCall.Do()
-		if image != nil {
-			break
-		}
-	}
-	if err != nil {
-		return nil, err
-	}
-	if image != nil {
-		if image.SelfLink != "" {
-			return image, nil
-		}
-	}
-	return nil, errors.New("Image does not exist: " + name)
-}
-
-// GetNetwork returns a *compute.Network representing the named network.
-func (g *GoogleComputeClient) GetNetwork(name string) (*compute.Network, error) {
-	networkGetCall := g.Service.Networks.Get(g.ProjectId, name)
-	network, err := networkGetCall.Do()
-	if err != nil {
-		return nil, err
-	}
-	return network, nil
-}
-
-// CreateInstance creates an instance in Google Compute Engine based on the
-// supplied instanceConfig.
-func (g *GoogleComputeClient) CreateInstance(zone string, instanceConfig *InstanceConfig) (*compute.Operation, error) {
-	instance := &compute.Instance{
-		Description:       instanceConfig.Description,
-		Image:             instanceConfig.Image,
-		MachineType:       instanceConfig.MachineType,
-		Metadata:          instanceConfig.Metadata,
-		Name:              instanceConfig.Name,
-		NetworkInterfaces: instanceConfig.NetworkInterfaces,
-		ServiceAccounts:   instanceConfig.ServiceAccounts,
-		Tags:              instanceConfig.Tags,
-	}
-	instanceInsertCall := g.Service.Instances.Insert(g.ProjectId, zone, instance)
-	operation, err := instanceInsertCall.Do()
-	if err != nil {
-		return nil, err
-	}
-	return operation, nil
-}
-
 // InstanceStatus returns a string representing the status of the named instance.
 // Status will be one of: "PROVISIONING", "STAGING", "RUNNING", "STOPPING",
 // "STOPPED", "TERMINATED".
@@ -256,59 +181,3 @@ func (g *GoogleComputeClient) DeleteInstance(zone, name string) (*compute.Operat
 	}
 	return operation, nil
 }
-
-// NewNetworkInterface returns a *compute.NetworkInterface based on the data provided.
-func NewNetworkInterface(network *compute.Network, public bool) *compute.NetworkInterface {
-	accessConfigs := make([]*compute.AccessConfig, 0)
-	if public {
-		c := &compute.AccessConfig{
-			Name: "AccessConfig created by Packer",
-			Type: "ONE_TO_ONE_NAT",
-		}
-		accessConfigs = append(accessConfigs, c)
-	}
-	return &compute.NetworkInterface{
-		AccessConfigs: accessConfigs,
-		Network:       network.SelfLink,
-	}
-}
-
-// NewServiceAccount returns a *compute.ServiceAccount with permissions required
-// for creating GCE machine images.
-func NewServiceAccount(email string) *compute.ServiceAccount {
-	return &compute.ServiceAccount{
-		Email: email,
-		Scopes: []string{
-			"https://www.googleapis.com/auth/userinfo.email",
-			"https://www.googleapis.com/auth/compute",
-			"https://www.googleapis.com/auth/devstorage.full_control",
-		},
-	}
-}
-
-// MapToMetadata converts a map[string]string to a *compute.Metadata.
-func MapToMetadata(metadata map[string]string) *compute.Metadata {
-	items := make([]*compute.MetadataItems, len(metadata))
-	for k, v := range metadata {
-		items = append(items, &compute.MetadataItems{k, v})
-	}
-	return &compute.Metadata{
-		Items: items,
-	}
-}
-
-// SliceToTags converts a []string to a *compute.Tags.
-func SliceToTags(tags []string) *compute.Tags {
-	return &compute.Tags{
-		Items: tags,
-	}
-}
-
-// scopes return a space separated list of scopes.
-func scopes() string {
-	s := []string{
-		"https://www.googleapis.com/auth/compute",
-		"https://www.googleapis.com/auth/devstorage.full_control",
-	}
-	return strings.Join(s, " ")
-}

builder/googlecompute/builder.go

@@ -51,7 +51,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 	// Build the steps.
 	steps := []multistep.Step{
 		new(StepCreateSSHKey),
-		new(stepCreateInstance),
+		new(StepCreateInstance),
 		new(stepInstanceInfo),
 		&common.StepConnectSSH{
 			SSHAddress:     sshAddress,

builder/googlecompute/driver.go

+package googlecompute
+
+// Driver is the interface that has to be implemented to communicate
+// with GCE. The Driver interface exists mostly to allow a mock implementation
+// to be used to test the steps.
+type Driver interface {
+	// RunInstance takes the given config and launches an instance.
+	RunInstance(*InstanceConfig) (<-chan error, error)
+}
+
+type InstanceConfig struct {
+	Description string
+	Image       string
+	MachineType string
+	Metadata    map[string]string
+	Name        string
+	Network     string
+	Tags        []string
+	Zone        string
+}

builder/googlecompute/driver_gce.go

+package googlecompute
+
+import (
+	"fmt"
+	"net/http"
+	"time"
+
+	"code.google.com/p/goauth2/oauth"
+	"code.google.com/p/goauth2/oauth/jwt"
+	"code.google.com/p/google-api-go-client/compute/v1beta16"
+	"github.com/mitchellh/packer/packer"
+)
+
+// driverGCE is a Driver implementation that actually talks to GCE.
+// Create an instance using NewDriverGCE.
+type driverGCE struct {
+	projectId string
+	service   *compute.Service
+	ui        packer.Ui
+}
+
+const DriverScopes string = "https://www.googleapis.com/auth/compute " +
+	"https://www.googleapis.com/auth/devstorage.full_control"
+
+func NewDriverGCE(ui packer.Ui, projectId string, c *clientSecrets, key []byte) (Driver, error) {
+	jwtTok := jwt.NewToken(c.Web.ClientEmail, DriverScopes, key)
+	jwtTok.ClaimSet.Aud = c.Web.TokenURI
+	token, err := jwtTok.Assert(new(http.Client))
+	if err != nil {
+		return nil, err
+	}
+
+	transport := &oauth.Transport{
+		Config: &oauth.Config{
+			ClientId: c.Web.ClientId,
+			Scope:    DriverScopes,
+			TokenURL: c.Web.TokenURI,
+			AuthURL:  c.Web.AuthURI,
+		},
+		Token: token,
+	}
+
+	service, err := compute.New(transport.Client())
+	if err != nil {
+		return nil, err
+	}
+
+	return &driverGCE{
+		projectId: projectId,
+		service:   service,
+		ui:        ui,
+	}, nil
+}
+
+func (d *driverGCE) RunInstance(c *InstanceConfig) (<-chan error, error) {
+	// Get the zone
+	d.ui.Message(fmt.Sprintf("Loading zone: %s", c.Zone))
+	zone, err := d.service.Zones.Get(d.projectId, c.Zone).Do()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get the image
+	d.ui.Message(fmt.Sprintf("Loading image: %s", c.Image))
+	image, err := d.getImage(c.Image)
+	if err != nil {
+		return nil, err
+	}
+
+	// Get the machine type
+	d.ui.Message(fmt.Sprintf("Loading machine type: %s", c.MachineType))
+	machineType, err := d.service.MachineTypes.Get(
+		d.projectId, zone.Name, c.MachineType).Do()
+	if err != nil {
+		return nil, err
+	}
+	// TODO(mitchellh): deprecation warnings
+
+	// Get the network
+	d.ui.Message(fmt.Sprintf("Loading network: %s", c.Network))
+	network, err := d.service.Networks.Get(d.projectId, c.Network).Do()
+	if err != nil {
+		return nil, err
+	}
+
+	// Build up the metadata
+	metadata := make([]*compute.MetadataItems, len(c.Metadata))
+	for k, v := range c.Metadata {
+		metadata = append(metadata, &compute.MetadataItems{
+			Key:   k,
+			Value: v,
+		})
+	}
+
+	// Create the instance information
+	instance := compute.Instance{
+		Description: c.Description,
+		Image:       image.SelfLink,
+		MachineType: machineType.SelfLink,
+		Metadata: &compute.Metadata{
+			Items: metadata,
+		},
+		Name: c.Name,
+		NetworkInterfaces: []*compute.NetworkInterface{
+			&compute.NetworkInterface{
+				AccessConfigs: []*compute.AccessConfig{
+					&compute.AccessConfig{
+						Name: "AccessConfig created by Packer",
+						Type: "ONE_TO_ONE_NAT",
+					},
+				},
+				Network: network.SelfLink,
+			},
+		},
+		ServiceAccounts: []*compute.ServiceAccount{
+			&compute.ServiceAccount{
+				Email: "default",
+				Scopes: []string{
+					"https://www.googleapis.com/auth/userinfo.email",
+					"https://www.googleapis.com/auth/compute",
+					"https://www.googleapis.com/auth/devstorage.full_control",
+				},
+			},
+		},
+		Tags: &compute.Tags{
+			Items: c.Tags,
+		},
+	}
+
+	d.ui.Message("Requesting instance creation...")
+	op, err := d.service.Instances.Insert(d.projectId, zone.Name, &instance).Do()
+	if err != nil {
+		return nil, err
+	}
+
+	errCh := make(chan error, 1)
+	go waitForState(errCh, "DONE", d.refreshZoneOp(op))
+	return errCh, nil
+}
+
+func (d *driverGCE) getImage(name string) (image *compute.Image, err error) {
+	projects := []string{d.projectId, "debian-cloud", "centos-cloud"}
+	for _, project := range projects {
+		image, err = d.service.Images.Get(project, name).Do()
+		if err == nil && image != nil && image.SelfLink != "" {
+			return
+		}
+		image = nil
+	}
+
+	if err == nil {
+		err = fmt.Errorf("Image could not be found: %s", name)
+	}
+
+	return
+}
+
+func (d *driverGCE) refreshZoneOp(op *compute.Operation) stateRefreshFunc {
+	return func() (string, error) {
+		newOp, err := d.service.ZoneOperations.Get(d.projectId, op.Zone, op.Name).Do()
+		if err != nil {
+			return "", err
+		}
+
+		// If the op is done, check for errors
+		err = nil
+		if newOp.Status == "DONE" {
+			if newOp.Error != nil {
+				for _, e := range newOp.Error.Errors {
+					err = packer.MultiErrorAppend(err, fmt.Errorf(e.Message))
+				}
+			}
+		}
+
+		return newOp.Status, err
+	}
+}
+
+// stateRefreshFunc is used to refresh the state of a thing and is
+// used in conjunction with waitForState.
+type stateRefreshFunc func() (string, error)
+
+// waitForState will spin in a loop forever waiting for state to
+// reach a certain target.
+func waitForState(errCh chan<- error, target string, refresh stateRefreshFunc) {
+	for {
+		state, err := refresh()
+		if err != nil {
+			errCh <- err
+			return
+		}
+		if state == target {
+			errCh <- nil
+			return
+		}
+
+		time.Sleep(2 * time.Second)
+	}
+}

builder/googlecompute/driver_mock.go

+package googlecompute
+
+// DriverMock is a Driver implementation that is a mocked out so that
+// it can be used for tests.
+type DriverMock struct {
+	RunInstanceConfig *InstanceConfig
+	RunInstanceErrCh  <-chan error
+	RunInstanceErr    error
+}
+
+func (d *DriverMock) RunInstance(c *InstanceConfig) (<-chan error, error) {
+	d.RunInstanceConfig = c
+
+	resultCh := d.RunInstanceErrCh
+	if resultCh == nil {
+		ch := make(chan error)
+		close(ch)
+		resultCh = ch
+	}
+
+	return resultCh, d.RunInstanceErr
+}

builder/googlecompute/step_create_instance.go

 package googlecompute
 
 import (
+	"errors"
 	"fmt"
+	"time"
 
-	"code.google.com/p/google-api-go-client/compute/v1beta16"
 	"github.com/mitchellh/multistep"
 	"github.com/mitchellh/packer/common/uuid"
 	"github.com/mitchellh/packer/packer"
 )
 
-// stepCreateInstance represents a Packer build step that creates GCE instances.
-type stepCreateInstance struct {
+// StepCreateInstance represents a Packer build step that creates GCE instances.
+type StepCreateInstance struct {
 	instanceName string
 }
 
 // Run executes the Packer build step that creates a GCE instance.
-func (s *stepCreateInstance) Run(state multistep.StateBag) multistep.StepAction {
-	var (
-		client = state.Get("client").(*GoogleComputeClient)
-		config = state.Get("config").(*Config)
-		ui     = state.Get("ui").(packer.Ui)
-	)
+func (s *StepCreateInstance) Run(state multistep.StateBag) multistep.StepAction {
+	config := state.Get("config").(*Config)
+	driver := state.Get("driver").(Driver)
+	sshPublicKey := state.Get("ssh_public_key").(string)
+	ui := state.Get("ui").(packer.Ui)
+
 	ui.Say("Creating instance...")
 	name := fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
-	// Build up the instance config.
-	instanceConfig := &InstanceConfig{
+
+	errCh, err := driver.RunInstance(&InstanceConfig{
 		Description: "New instance created by Packer",
-		Name:        name,
-	}
-	// Validate the zone.
-	zone, err := client.GetZone(config.Zone)
-	if err != nil {
-		err := fmt.Errorf("Error creating instance: %s", err)
-		state.Put("error", err)
-		ui.Error(err.Error())
-		return multistep.ActionHalt
-	}
-	// Set the source image. Must be a fully-qualified URL.
-	image, err := client.GetImage(config.SourceImage)
-	if err != nil {
-		err := fmt.Errorf("Error creating instance: %s", err)
-		state.Put("error", err)
-		ui.Error(err.Error())
-		return multistep.ActionHalt
-	}
-	instanceConfig.Image = image.SelfLink
-	// Set the machineType. Must be a fully-qualified URL.
-	machineType, err := client.GetMachineType(config.MachineType, zone.Name)
-	if err != nil {
-		err := fmt.Errorf("Error creating instance: %s", err)
-		state.Put("error", err)
-		ui.Error(err.Error())
-		return multistep.ActionHalt
+		Image:       config.SourceImage,
+		MachineType: config.MachineType,
+		Metadata: map[string]string{
+			"sshKeys": fmt.Sprintf("%s:%s", config.SSHUsername, sshPublicKey),
+		},
+		Name:    name,
+		Network: config.Network,
+		Tags:    config.Tags,
+		Zone:    config.Zone,
+	})
 
+	if err == nil {
+		select {
+		case err = <-errCh:
+		case <-time.After(config.stateTimeout):
+			err = errors.New("time out while waiting for instance to create")
+		}
 	}
-	instanceConfig.MachineType = machineType.SelfLink
-	// Set up the Network Interface.
-	network, err := client.GetNetwork(config.Network)
-	if err != nil {
-		err := fmt.Errorf("Error creating instance: %s", err)
-		state.Put("error", err)
-		ui.Error(err.Error())
-		return multistep.ActionHalt
-	}
-	networkInterface := NewNetworkInterface(network, true)
-	networkInterfaces := []*compute.NetworkInterface{
-		networkInterface,
-	}
-	instanceConfig.NetworkInterfaces = networkInterfaces
-	// Add the metadata, which also setups up the ssh key.
-	metadata := make(map[string]string)
-	sshPublicKey := state.Get("ssh_public_key").(string)
-	metadata["sshKeys"] = fmt.Sprintf("%s:%s", config.SSHUsername, sshPublicKey)
-	instanceConfig.Metadata = MapToMetadata(metadata)
-	// Add the default service so we can create an image of the machine and
-	// upload it to cloud storage.
-	defaultServiceAccount := NewServiceAccount("default")
-	serviceAccounts := []*compute.ServiceAccount{
-		defaultServiceAccount,
-	}
-	instanceConfig.ServiceAccounts = serviceAccounts
-	// Create the instance based on configuration
-	operation, err := client.CreateInstance(zone.Name, instanceConfig)
-	if err != nil {
-		err := fmt.Errorf("Error creating instance: %s", err)
-		state.Put("error", err)
-		ui.Error(err.Error())
-		return multistep.ActionHalt
-	}
-	ui.Say("Waiting for the instance to be created...")
-	err = waitForZoneOperationState("DONE", config.Zone, operation.Name, client, config.stateTimeout)
+
 	if err != nil {
 		err := fmt.Errorf("Error creating instance: %s", err)
 		state.Put("error", err)
 		ui.Error(err.Error())
 		return multistep.ActionHalt
 	}
-	// Update the state.
+
+	ui.Message("Instance has been created!")
+
+	// Things succeeded, store the name so we can remove it later
 	state.Put("instance_name", name)
 	s.instanceName = name
+
 	return multistep.ActionContinue
 }
 
 // Cleanup destroys the GCE instance created during the image creation process.
-func (s *stepCreateInstance) Cleanup(state multistep.StateBag) {
-	var (
-		client = state.Get("client").(*GoogleComputeClient)
-		config = state.Get("config").(*Config)
-		ui     = state.Get("ui").(packer.Ui)
-	)
+func (s *StepCreateInstance) Cleanup(state multistep.StateBag) {
 	if s.instanceName == "" {
 		return
 	}
-	ui.Say("Destroying instance...")
-	operation, err := client.DeleteInstance(config.Zone, s.instanceName)
-	if err != nil {
-		ui.Error(fmt.Sprintf("Error destroying instance. Please destroy it manually: %v", s.instanceName))
-	}
-	ui.Say("Waiting for the instance to be deleted...")
-	for {
-		status, err := client.ZoneOperationStatus(config.Zone, operation.Name)
+	/*
+		var (
+			client = state.Get("client").(*GoogleComputeClient)
+			config = state.Get("config").(*Config)
+			ui     = state.Get("ui").(packer.Ui)
+		)
+		ui.Say("Destroying instance...")
+		operation, err := client.DeleteInstance(config.Zone, s.instanceName)
 		if err != nil {
 			ui.Error(fmt.Sprintf("Error destroying instance. Please destroy it manually: %v", s.instanceName))
 		}
-		if status == "DONE" {
-			break
+		ui.Say("Waiting for the instance to be deleted...")
+		for {
+			status, err := client.ZoneOperationStatus(config.Zone, operation.Name)
+			if err != nil {
+				ui.Error(fmt.Sprintf("Error destroying instance. Please destroy it manually: %v", s.instanceName))
+			}
+			if status == "DONE" {
+				break
+			}
 		}
-	}
+	*/
 	return
 }

builder/googlecompute/step_create_instance_test.go

+package googlecompute
+
+import (
+	"errors"
+	"github.com/mitchellh/multistep"
+	"testing"
+	"time"
+)
+
+func TestStepCreateInstance_impl(t *testing.T) {
+	var _ multistep.Step = new(StepCreateInstance)
+}
+
+func TestStepCreateInstance(t *testing.T) {
+	state := testState(t)
+	step := new(StepCreateInstance)
+	defer step.Cleanup(state)
+
+	state.Put("ssh_public_key", "key")
+
+	// run the step
+	if action := step.Run(state); action != multistep.ActionContinue {
+		t.Fatalf("bad action: %#v", action)
+	}
+
+	// Verify state
+	if _, ok := state.GetOk("instance_name"); !ok {
+		t.Fatal("should have instance name")
+	}
+}
+
+func TestStepCreateInstance_error(t *testing.T) {
+	state := testState(t)
+	step := new(StepCreateInstance)
+	defer step.Cleanup(state)
+
+	state.Put("ssh_public_key", "key")
+
+	driver := state.Get("driver").(*DriverMock)
+	driver.RunInstanceErr = errors.New("error")
+
+	// run the step
+	if action := step.Run(state); action != multistep.ActionHalt {
+		t.Fatalf("bad action: %#v", action)
+	}
+
+	// Verify state
+	if _, ok := state.GetOk("error"); !ok {
+		t.Fatal("should have error")
+	}
+	if _, ok := state.GetOk("instance_name"); ok {
+		t.Fatal("should NOT have instance name")
+	}
+}
+
+func TestStepCreateInstance_errorOnChannel(t *testing.T) {
+	state := testState(t)
+	step := new(StepCreateInstance)
+	defer step.Cleanup(state)
+
+	errCh := make(chan error, 1)
+	errCh <- errors.New("error")
+
+	state.Put("ssh_public_key", "key")
+
+	driver := state.Get("driver").(*DriverMock)
+	driver.RunInstanceErrCh = errCh
+
+	// run the step
+	if action := step.Run(state); action != multistep.ActionHalt {
+		t.Fatalf("bad action: %#v", action)
+	}
+
+	// Verify state
+	if _, ok := state.GetOk("error"); !ok {
+		t.Fatal("should have error")
+	}
+	if _, ok := state.GetOk("instance_name"); ok {
+		t.Fatal("should NOT have instance name")
+	}
+}
+
+func TestStepCreateInstance_errorTimeout(t *testing.T) {
+	state := testState(t)
+	step := new(StepCreateInstance)
+	defer step.Cleanup(state)
+
+	errCh := make(chan error, 1)
+	go func() {
+		<-time.After(10 * time.Millisecond)
+		errCh <- nil
+	}()
+
+	state.Put("ssh_public_key", "key")
+
+	config := state.Get("config").(*Config)
+	config.stateTimeout = 1 * time.Microsecond
+
+	driver := state.Get("driver").(*DriverMock)
+	driver.RunInstanceErrCh = errCh
+
+	// run the step
+	if action := step.Run(state); action != multistep.ActionHalt {
+		t.Fatalf("bad action: %#v", action)
+	}
+
+	// Verify state
+	if _, ok := state.GetOk("error"); !ok {
+		t.Fatal("should have error")
+	}
+	if _, ok := state.GetOk("instance_name"); ok {
+		t.Fatal("should NOT have instance name")
+	}
+}

builder/googlecompute/step_test.go

@@ -10,6 +10,7 @@ import (
 func testState(t *testing.T) multistep.StateBag {
 	state := new(multistep.BasicStateBag)
 	state.Put("config", testConfigStruct(t))
+	state.Put("driver", &DriverMock{})
 	state.Put("hook", &packer.MockHook{})
 	state.Put("ui", &packer.BasicUi{
 		Reader: new(bytes.Buffer),

builder/googlecompute/wait.go

 package googlecompute
 
 import (
-	"fmt"
-	"log"
 	"time"
 )
 
-// statusFunc.
-type statusFunc func() (string, error)
-
 // waitForInstanceState.
 func waitForInstanceState(desiredState string, zone string, name string, client *GoogleComputeClient, timeout time.Duration) error {
-	f := func() (string, error) {
-		return client.InstanceStatus(zone, name)
-	}
-	return waitForState("instance", desiredState, f, timeout)
+	return nil
+	/*
+		f := func() (string, error) {
+			return client.InstanceStatus(zone, name)
+		}
+		return waitForState("instance", desiredState, f, timeout)
+	*/
 }
 
 // waitForZoneOperationState.
 func waitForZoneOperationState(desiredState string, zone string, name string, client *GoogleComputeClient, timeout time.Duration) error {
-	f := func() (string, error) {
-		return client.ZoneOperationStatus(zone, name)
-	}
-	return waitForState("operation", desiredState, f, timeout)
+	return nil
+	/*
+		f := func() (string, error) {
+			return client.ZoneOperationStatus(zone, name)
+		}
+		return waitForState("operation", desiredState, f, timeout)
+	*/
 }
 
 // waitForGlobalOperationState.
 func waitForGlobalOperationState(desiredState string, name string, client *GoogleComputeClient, timeout time.Duration) error {
-	f := func() (string, error) {
-		return client.GlobalOperationStatus(name)
-	}
-	return waitForState("operation", desiredState, f, timeout)
-}
-
-// waitForState.
-func waitForState(kind string, desiredState string, f statusFunc, timeout time.Duration) error {
-	done := make(chan struct{})
-	defer close(done)
-	result := make(chan error, 1)
-	go func() {
-		attempts := 0
-		for {
-			attempts += 1
-			log.Printf("Checking %s state... (attempt: %d)", kind, attempts)
-			status, err := f()
-			if err != nil {
-				result <- err
-				return
-			}
-			if status == desiredState {
-				result <- nil
-				return
-			}
-			time.Sleep(3 * time.Second)
-			select {
-			case <-done:
-				return
-			default:
-				continue
-			}
+	/*
+		f := func() (string, error) {
+			return client.GlobalOperationStatus(name)
 		}
-	}()
-	log.Printf("Waiting for up to %d seconds for %s to become %s", timeout, kind, desiredState)
-	select {
-	case err := <-result:
-		return err
-	case <-time.After(timeout):
-		err := fmt.Errorf("Timeout while waiting to for the %s to become '%s'", kind, desiredState)
-		return err
-	}
+		return waitForState("operation", desiredState, f, timeout)
+	*/
+	return nil
 }