Merge pull request hashicorp#1629 from mitchellh/f-no-command-plugins

Remove command plugins, command interface from core, etc.

checkpoint.go

@@ -6,11 +6,10 @@ import (
 	"path/filepath"
 
 	"github.com/hashicorp/go-checkpoint"
-	"github.com/mitchellh/packer/packer"
+	"github.com/mitchellh/packer/command"
 )
 
 func init() {
-	packer.VersionChecker = packerVersionCheck
 	checkpointResult = make(chan *checkpoint.CheckResponse, 1)
 }
 
@@ -33,9 +32,9 @@ func runCheckpoint(c *config) {
 		return
 	}
 
-	version := packer.Version
-	if packer.VersionPrerelease != "" {
-		version += fmt.Sprintf(".%s", packer.VersionPrerelease)
+	version := Version
+	if VersionPrerelease != "" {
+		version += fmt.Sprintf(".%s", VersionPrerelease)
 	}
 
 	signaturePath := filepath.Join(configDir, "checkpoint_signature")
@@ -58,21 +57,23 @@ func runCheckpoint(c *config) {
 	checkpointResult <- resp
 }
 
-// packerVersionCheck implements packer.VersionCheckFunc and is used
+// commandVersionCheck implements command.VersionCheckFunc and is used
 // as the version checker.
-func packerVersionCheck(current string) (packer.VersionCheckInfo, error) {
+func commandVersionCheck() (command.VersionCheckInfo, error) {
+	// Wait for the result to come through
 	info := <-checkpointResult
 	if info == nil {
-		var zero packer.VersionCheckInfo
+		var zero command.VersionCheckInfo
 		return zero, nil
 	}
 
+	// Build the alerts that we may have received about our version
 	alerts := make([]string, len(info.Alerts))
 	for i, a := range info.Alerts {
 		alerts[i] = a.Message
 	}
 
-	return packer.VersionCheckInfo{
+	return command.VersionCheckInfo{
 		Outdated: info.Outdated,
 		Latest:   info.CurrentVersion,
 		Alerts:   alerts,

command/build/command.go → command/build.go

@@ -1,4 +1,4 @@
-package build
+package command
 
 import (
 	"bytes"
@@ -14,16 +14,20 @@ import (
 	"sync"
 )
 
-type Command byte
-
-func (Command) Help() string {
-	return strings.TrimSpace(helpText)
+type BuildCommand struct {
+	Meta
 }
 
-func (c Command) Run(env packer.Environment, args []string) int {
+func (c BuildCommand) Run(args []string) int {
 	var cfgColor, cfgDebug, cfgForce, cfgParallel bool
 	buildOptions := new(cmdcommon.BuildOptions)
 
+	env, err := c.Meta.Environment()
+	if err != nil {
+		c.Ui.Error(fmt.Sprintf("Error initializing environment: %s", err))
+		return 1
+	}
+
 	cmdFlags := flag.NewFlagSet("build", flag.ContinueOnError)
 	cmdFlags.Usage = func() { env.Ui().Say(c.Help()) }
 	cmdFlags.BoolVar(&cfgColor, "color", true, "enable or disable color")
@@ -278,6 +282,28 @@ func (c Command) Run(env packer.Environment, args []string) int {
 	return 0
 }
 
-func (Command) Synopsis() string {
+func (BuildCommand) Help() string {
+	helpText := `
+Usage: packer build [options] TEMPLATE
+
+  Will execute multiple builds in parallel as defined in the template.
+  The various artifacts created by the template will be outputted.
+
+Options:
+
+  -debug                     Debug mode enabled for builds
+  -force                     Force a build to continue if artifacts exist, deletes existing artifacts
+  -machine-readable          Machine-readable output
+  -except=foo,bar,baz        Build all builds other than these
+  -only=foo,bar,baz          Only build the given builds by name
+  -parallel=false            Disable parallelization (on by default)
+  -var 'key=value'           Variable for templates, can be used multiple times.
+  -var-file=path             JSON file containing user variables.
+`
+
+	return strings.TrimSpace(helpText)
+}
+
+func (BuildCommand) Synopsis() string {
 	return "build image(s) from template"
 }

command/fix/command.go → command/fix.go

@@ -1,23 +1,28 @@
-package fix
+package command
 
 import (
 	"bytes"
 	"encoding/json"
 	"flag"
 	"fmt"
-	"github.com/mitchellh/packer/packer"
 	"log"
 	"os"
 	"strings"
-)
 
-type Command byte
+	"github.com/mitchellh/packer/fix"
+)
 
-func (Command) Help() string {
-	return strings.TrimSpace(helpString)
+type FixCommand struct {
+	Meta
 }
 
-func (c Command) Run(env packer.Environment, args []string) int {
+func (c *FixCommand) Run(args []string) int {
+	env, err := c.Meta.Environment()
+	if err != nil {
+		c.Ui.Error(fmt.Sprintf("Error initializing environment: %s", err))
+		return 1
+	}
+
 	cmdFlags := flag.NewFlagSet("fix", flag.ContinueOnError)
 	cmdFlags.Usage = func() { env.Ui().Say(c.Help()) }
 	if err := cmdFlags.Parse(args); err != nil {
@@ -50,9 +55,9 @@ func (c Command) Run(env packer.Environment, args []string) int {
 	tplF.Close()
 
 	input := templateData
-	for _, name := range FixerOrder {
+	for _, name := range fix.FixerOrder {
 		var err error
-		fixer, ok := Fixers[name]
+		fixer, ok := fix.Fixers[name]
 		if !ok {
 			panic("fixer not found: " + name)
 		}
@@ -85,6 +90,30 @@ func (c Command) Run(env packer.Environment, args []string) int {
 	return 0
 }
 
-func (c Command) Synopsis() string {
+func (*FixCommand) Help() string {
+	helpText := `
+Usage: packer fix [options] TEMPLATE
+
+  Reads the JSON template and attempts to fix known backwards
+  incompatibilities. The fixed template will be outputted to standard out.
+
+  If the template cannot be fixed due to an error, the command will exit
+  with a non-zero exit status. Error messages will appear on standard error.
+
+Fixes that are run:
+
+  iso-md5             Replaces "iso_md5" in builders with newer "iso_checksum"
+  createtime          Replaces ".CreateTime" in builder configs with "{{timestamp}}"
+  virtualbox-gaattach Updates VirtualBox builders using "guest_additions_attach"
+                      to use "guest_additions_mode"
+  pp-vagrant-override Replaces old-style provider overrides for the Vagrant
+                      post-processor to new-style as of Packer 0.5.0.
+  virtualbox-rename   Updates "virtualbox" builders to "virtualbox-iso"
+`
+
+	return strings.TrimSpace(helpText)
+}
+
+func (c *FixCommand) Synopsis() string {
 	return "fixes templates from old versions of packer"
 }

command/inspect/command.go → command/inspect.go

@@ -1,4 +1,4 @@
-package inspect
+package command
 
 import (
 	"flag"
@@ -9,17 +9,17 @@ import (
 	"strings"
 )
 
-type Command struct{}
-
-func (Command) Help() string {
-	return strings.TrimSpace(helpText)
+type InspectCommand struct{
+	Meta
 }
 
-func (c Command) Synopsis() string {
-	return "see components of a template"
-}
+func (c *InspectCommand) Run(args []string) int {
+	env, err := c.Meta.Environment()
+	if err != nil {
+		c.Ui.Error(fmt.Sprintf("Error initializing environment: %s", err))
+		return 1
+	}
 
-func (c Command) Run(env packer.Environment, args []string) int {
 	flags := flag.NewFlagSet("inspect", flag.ContinueOnError)
 	flags.Usage = func() { env.Ui().Say(c.Help()) }
 	if err := flags.Parse(args); err != nil {
@@ -148,3 +148,23 @@ func (c Command) Run(env packer.Environment, args []string) int {
 
 	return 0
 }
+
+func (*InspectCommand) Help() string {
+	helpText := `
+Usage: packer inspect TEMPLATE
+
+  Inspects a template, parsing and outputting the components a template
+  defines. This does not validate the contents of a template (other than
+  basic syntax by necessity).
+
+Options:
+
+  -machine-readable  Machine-readable output
+`
+
+	return strings.TrimSpace(helpText)
+}
+
+func (c *InspectCommand) Synopsis() string {
+	return "see components of a template"
+}