Added template conversion (#18)

* Added conversion to template without timeout
* Added timeout
* Extracted converting to template to a separate step

builder.go

@@ -62,7 +62,11 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		},
 		&common.StepProvision{},
 		&StepShutdown{
-			Command: b.config.ShutdownCommand,
+			Command:    b.config.ShutdownCommand,
+			ShutdownTimeout: b.config.ShutdownTimeout,
+		},
+		&StepPostProcess{
+			ToTemplate: b.config.ToTemplate,
 		},
 	}
 

config.go

@@ -9,6 +9,7 @@ import (
 	"github.com/hashicorp/packer/packer"
 	"github.com/hashicorp/packer/template/interpolate"
 	"strconv"
+	"time"
 )
 
 type Config struct {
@@ -27,7 +28,12 @@ type Config struct {
 	Host         string `mapstructure:"host"`
 	ResourcePool string `mapstructure:"resource_pool"`
 	Datastore    string `mapstructure:"datastore"`
+
+	// Settings
 	LinkedClone  bool   `mapstructure:"linked_clone"`
+	ToTemplate   bool   `mapstructure:"to_template"`
+	RawShutdownTimeout string `mapstructure:"shutdown_timeout"`
+	ShutdownTimeout time.Duration ``
 
 	// Hardware
 	Cpus            string `mapstructure:"cpus"`
@@ -84,11 +90,19 @@ func NewConfig(raws ...interface{}) (*Config, []string, error) {
 			errs = packer.MultiErrorAppend(errs, fmt.Errorf("Invalid number for Ram"))
 		}
 	}
+	if c.RawShutdownTimeout == "" {
+		c.RawShutdownTimeout = "5m"
+	}
+	c.ShutdownTimeout, err = time.ParseDuration(c.RawShutdownTimeout)
+	if err != nil {
+		errs = packer.MultiErrorAppend(errs, fmt.Errorf("Failed parsing shutdown_timeout: %s", err))
+	}
+
 
 	// Warnings
 	var warnings []string
 	if c.Datastore == "" {
-		warnings = append(warnings, "Datastore is not specified, will try to find a default one")
+		warnings = append(warnings, "Datastore is not specified, will try to find the default one")
 	}
 
 	if len(errs.Errors) > 0 {

step_configure_hw.go

@@ -49,6 +49,7 @@ func (s *StepConfigureHW) Run(state multistep.StateBag) multistep.StepAction {
 	ui := state.Get("ui").(packer.Ui)
 	if parametersFlag != (ConfigParametersFlag{}) {
 		ui.Say("configuring virtual hardware...")
+		// Reconfigure hardware
 		task, err := vm.Reconfigure(ctx, confSpec)
 		if err != nil {
 			state.Put("error", err)

step_post_process.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"github.com/mitchellh/multistep"
+	"github.com/hashicorp/packer/packer"
+	"github.com/vmware/govmomi/object"
+	"context"
+)
+
+type StepPostProcess struct{
+	ToTemplate bool
+}
+
+func (s *StepPostProcess) Run(state multistep.StateBag) multistep.StepAction {
+	ui := state.Get("ui").(packer.Ui)
+	vm := state.Get("vm").(*object.VirtualMachine)
+	ctx := state.Get("ctx").(context.Context)
+
+	// Turning into template if needed
+	if s.ToTemplate {
+		ui.Say("turning into template...")
+		err := vm.MarkAsTemplate(ctx)
+		if err != nil {
+			state.Put("error", err)
+			return multistep.ActionHalt
+		}
+		ui.Say("done")
+	}
+
+	return multistep.ActionContinue
+}
+
+func (s *StepPostProcess) Cleanup(state multistep.StateBag) {}

step_shutdown.go

@@ -9,10 +9,12 @@ import (
 	"log"
 	"time"
 	"bytes"
+	"errors"
 )
 
 type StepShutdown struct{
-	Command string
+	Command    string
+	ShutdownTimeout time.Duration
 }
 
 func (s *StepShutdown) Run(state multistep.StateBag) multistep.StepAction {
@@ -40,38 +42,37 @@ func (s *StepShutdown) Run(state multistep.StateBag) multistep.StepAction {
 			ui.Error(err.Error())
 			return multistep.ActionHalt
 		}
-
-		// TODO: add timeout
-		for !cmd.Exited {
-			ui.Say("Waiting for remote cmd to finish...")
-			time.Sleep(150 * time.Millisecond)
-		}
-		if cmd.ExitStatus != 0 && cmd.ExitStatus != packer.CmdDisconnect {
-			err := fmt.Errorf("Cmd exit status %v, not 0", cmd.ExitStatus)
-			state.Put("error", err)
-			ui.Error(err.Error())
-			return multistep.ActionHalt
-		} else if cmd.ExitStatus == packer.CmdDisconnect {
-			ui.Say("VM disconnected")
-		}
 	} else {
 		ui.Say("Forcibly halting virtual machine...")
 
 		err := vm.ShutdownGuest(ctx)
 		if err != nil {
-			state.Put("error", err)
+			state.Put("error", fmt.Errorf("Could not shutdown guest: %v", err))
 			return multistep.ActionHalt
 		}
+	}
 
-		task, err := vm.PowerOff(ctx)
+	// Wait for the machine to actually shut down
+	log.Printf("Waiting max %s for shutdown to complete", s.ShutdownTimeout)
+	shutdownTimer := time.After(s.ShutdownTimeout)
+	for {
+		powerState, err := vm.PowerState(ctx)
 		if err != nil {
 			state.Put("error", err)
 			return multistep.ActionHalt
 		}
-		_, err = task.WaitForResult(ctx, nil)
-		if err != nil {
+		if powerState == "poweredOff" {
+			break
+		}
+
+		select {
+		case <-shutdownTimer:
+			err := errors.New("Timeout while waiting for machine to shut down.")
 			state.Put("error", err)
+			ui.Error(err.Error())
 			return multistep.ActionHalt
+		default:
+			time.Sleep(150 * time.Millisecond)
 		}
 	}