builder.gcp: use c.Comm for ssh

builder/googlecompute/builder.go

@@ -51,9 +51,9 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 	steps := []multistep.Step{
 		new(StepCheckExistingImage),
 		&StepCreateSSHKey{
-			Debug:          b.config.PackerDebug,
-			DebugKeyPath:   fmt.Sprintf("gce_%s.pem", b.config.PackerBuildName),
-			PrivateKeyFile: b.config.Comm.SSHPrivateKeyFile,
+			Debug:        b.config.PackerDebug,
+			Comm:         &b.config.Comm,
+			DebugKeyPath: fmt.Sprintf("gce_%s.pem", b.config.PackerBuildName),
 		},
 		&StepCreateInstance{
 			Debug: b.config.PackerDebug,

builder/googlecompute/step_create_ssh_key.go

@@ -10,6 +10,7 @@ import (
 	"io/ioutil"
 	"os"
 
+	"github.com/hashicorp/packer/helper/communicator"
 	"github.com/hashicorp/packer/helper/multistep"
 	"github.com/hashicorp/packer/packer"
 	"golang.org/x/crypto/ssh"
@@ -17,9 +18,9 @@ import (
 
 // StepCreateSSHKey represents a Packer build step that generates SSH key pairs.
 type StepCreateSSHKey struct {
-	Debug          bool
-	DebugKeyPath   string
-	PrivateKeyFile string
+	Debug        bool
+	Comm         *communicator.Config
+	DebugKeyPath string
 }
 
 // Run executes the Packer build step that generates SSH key pairs.
@@ -28,9 +29,9 @@ func (s *StepCreateSSHKey) Run(_ context.Context, state multistep.StateBag) mult
 	ui := state.Get("ui").(packer.Ui)
 	config := state.Get("config").(*Config)
 
-	if s.PrivateKeyFile != "" {
+	if s.Comm.SSHPrivateKeyFile != "" {
 		ui.Say("Using existing SSH private key")
-		privateKeyBytes, err := ioutil.ReadFile(s.PrivateKeyFile)
+		privateKeyBytes, err := ioutil.ReadFile(s.Comm.SSHPrivateKeyFile)
 		if err != nil {
 			state.Put("error", fmt.Errorf(
 				"Error loading configured private key file: %s", err))

builder/googlecompute/step_create_ssh_key_test.go

@@ -3,6 +3,7 @@ package googlecompute
 import (
 	"context"
 
+	"github.com/hashicorp/packer/helper/communicator"
 	"github.com/hashicorp/packer/helper/multistep"
 
 	"io/ioutil"
@@ -17,7 +18,8 @@ func TestStepCreateSSHKey_impl(t *testing.T) {
 func TestStepCreateSSHKey_privateKey(t *testing.T) {
 	state := testState(t)
 	step := new(StepCreateSSHKey)
-	step.PrivateKeyFile = "test-fixtures/fake-key"
+	step.Comm = new(communicator.Config)
+	step.Comm.SSHPrivateKeyFile = "test-fixtures/fake-key"
 	defer step.Cleanup(state)
 
 	// run the step
@@ -35,6 +37,7 @@ func TestStepCreateSSHKey_privateKey(t *testing.T) {
 func TestStepCreateSSHKey(t *testing.T) {
 	state := testState(t)
 	step := new(StepCreateSSHKey)
+	step.Comm = new(communicator.Config)
 	defer step.Cleanup(state)
 
 	// run the step
@@ -62,6 +65,7 @@ func TestStepCreateSSHKey_debug(t *testing.T) {
 
 	state := testState(t)
 	step := new(StepCreateSSHKey)
+	step.Comm = new(communicator.Config)
 	step.Debug = true
 	step.DebugKeyPath = tf.Name()