builder/digitalOcean: use names/slugs as well as IDs for image/region/size

builder/digitalocean/api.go

@@ -13,6 +13,7 @@ import (
 	"log"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 	"time"
 )
@@ -22,6 +23,7 @@ const DIGITALOCEAN_API_URL = "https://api.digitalocean.com"
 type Image struct {
 	Id           uint
 	Name         string
+	Slug         string
 	Distribution string
 }
 
@@ -32,12 +34,23 @@ type ImagesResp struct {
 type Region struct {
 	Id   uint
 	Name string
+	Slug string
 }
 
 type RegionsResp struct {
 	Regions []Region
 }
 
+type Size struct {
+	Id   uint
+	Name string
+	Slug string
+}
+
+type SizesResp struct {
+	Sizes []Size
+}
+
 type DigitalOceanClient struct {
 	// The http client for communicating
 	client *http.Client
@@ -90,12 +103,28 @@ func (d DigitalOceanClient) DestroyKey(id uint) error {
 }
 
 // Creates a droplet and returns it's id
-func (d DigitalOceanClient) CreateDroplet(name string, size uint, image uint, region uint, keyId uint, privateNetworking bool) (uint, error) {
+func (d DigitalOceanClient) CreateDroplet(name string, size string, image string, region string, keyId uint, privateNetworking bool) (uint, error) {
 	params := url.Values{}
 	params.Set("name", name)
-	params.Set("size_id", fmt.Sprintf("%v", size))
-	params.Set("image_id", fmt.Sprintf("%v", image))
-	params.Set("region_id", fmt.Sprintf("%v", region))
+
+	found_size, err := d.Size(size)
+	if err != nil {
+		return 0, fmt.Errorf("Invalid size or lookup failure: '%s': %s", size, err)
+	}
+
+	found_image, err := d.Image(image)
+	if err != nil {
+		return 0, fmt.Errorf("Invalid image or lookup failure: '%s': %s", image, err)
+	}
+
+	found_region, err := d.Region(region)
+	if err != nil {
+		return 0, fmt.Errorf("Invalid region or lookup failure: '%s': %s", region, err)
+	}
+
+	params.Set("size_slug", found_size.Slug)
+	params.Set("image_slug", found_image.Slug)
+	params.Set("region_slug", found_region.Slug)
 	params.Set("ssh_key_ids", fmt.Sprintf("%v", keyId))
 	params.Set("private_networking", fmt.Sprintf("%v", privateNetworking))
 
@@ -263,6 +292,38 @@ func NewRequest(d DigitalOceanClient, path string, params url.Values) (map[strin
 	return nil, lastErr
 }
 
+func (d DigitalOceanClient) Image(slug_or_name_or_id string) (Image, error) {
+	images, err := d.Images()
+	if err != nil {
+		return Image{}, err
+	}
+
+	for _, image := range images {
+		if strings.EqualFold(image.Slug, slug_or_name_or_id) {
+			return image, nil
+		}
+	}
+
+	for _, image := range images {
+		if strings.EqualFold(image.Name, slug_or_name_or_id) {
+			return image, nil
+		}
+	}
+
+	for _, image := range images {
+		id, err := strconv.Atoi(slug_or_name_or_id)
+		if err == nil {
+			if image.Id == uint(id) {
+				return image, nil
+			}
+		}
+	}
+
+	err = errors.New(fmt.Sprintf("Unknown image '%v'", slug_or_name_or_id))
+
+	return Image{}, err
+}
+
 // Returns all available regions.
 func (d DigitalOceanClient) Regions() ([]Region, error) {
 	resp, err := NewRequest(d, "regions", url.Values{})
@@ -278,19 +339,81 @@ func (d DigitalOceanClient) Regions() ([]Region, error) {
 	return result.Regions, nil
 }
 
-func (d DigitalOceanClient) RegionName(region_id uint) (string, error) {
+func (d DigitalOceanClient) Region(slug_or_name_or_id string) (Region, error) {
 	regions, err := d.Regions()
 	if err != nil {
-		return "", err
+		return Region{}, err
 	}
 
 	for _, region := range regions {
-		if region.Id == region_id {
-			return region.Name, nil
+		if strings.EqualFold(region.Slug, slug_or_name_or_id) {
+			return region, nil
+		}
+	}
+
+	for _, region := range regions {
+		if strings.EqualFold(region.Name, slug_or_name_or_id) {
+			return region, nil
+		}
+	}
+
+	for _, region := range regions {
+		id, err := strconv.Atoi(slug_or_name_or_id)
+		if err == nil {
+			if region.Id == uint(id) {
+				return region, nil
+			}
+		}
+	}
+
+	err = errors.New(fmt.Sprintf("Unknown region '%v'", slug_or_name_or_id))
+
+	return Region{}, err
+}
+
+// Returns all available sizes.
+func (d DigitalOceanClient) Sizes() ([]Size, error) {
+	resp, err := NewRequest(d, "sizes", url.Values{})
+	if err != nil {
+		return nil, err
+	}
+
+	var result SizesResp
+	if err := mapstructure.Decode(resp, &result); err != nil {
+		return nil, err
+	}
+
+	return result.Sizes, nil
+}
+
+func (d DigitalOceanClient) Size(slug_or_name_or_id string) (Size, error) {
+	sizes, err := d.Sizes()
+	if err != nil {
+		return Size{}, err
+	}
+
+	for _, size := range sizes {
+		if strings.EqualFold(size.Slug, slug_or_name_or_id) {
+			return size, nil
+		}
+	}
+
+	for _, size := range sizes {
+		if strings.EqualFold(size.Name, slug_or_name_or_id) {
+			return size, nil
+		}
+	}
+
+	for _, size := range sizes {
+		id, err := strconv.Atoi(slug_or_name_or_id)
+		if err == nil {
+			if size.Id == uint(id) {
+				return size, nil
+			}
 		}
 	}
 
-	err = errors.New(fmt.Sprintf("Unknown region id %v", region_id))
+	err = errors.New(fmt.Sprintf("Unknown size '%v'", slug_or_name_or_id))
 
-	return "", err
+	return Size{}, err
 }

builder/digitalocean/artifact.go

@@ -15,9 +15,6 @@ type Artifact struct {
 	// The name of the region
 	regionName string
 
-	// The ID of the region
-	regionId uint
-
 	// The client for making API calls
 	client *DigitalOceanClient
 }

builder/digitalocean/artifact_test.go

@@ -14,7 +14,7 @@ func TestArtifact_Impl(t *testing.T) {
 }
 
 func TestArtifactString(t *testing.T) {
-	a := &Artifact{"packer-foobar", 42, "San Francisco", 3, nil}
+	a := &Artifact{"packer-foobar", 42, "San Francisco", nil}
 	expected := "A snapshot was created: 'packer-foobar' in region 'San Francisco'"
 
 	if a.String() != expected {

builder/digitalocean/builder.go

@@ -15,6 +15,18 @@ import (
 	"time"
 )
 
+// see https://api.digitalocean.com/images/?client_id=[client_id]&api_key=[api_key]
+// name="Ubuntu 12.04.4 x64", id=3101045,
+const DefaultImage  = "ubuntu-12-04-x64"
+
+// see https://api.digitalocean.com/regions/?client_id=[client_id]&api_key=[api_key]
+// name="New York", id=1
+const DefaultRegion = "nyc1"
+
+// see https://api.digitalocean.com/sizes/?client_id=[client_id]&api_key=[api_key]
+// name="512MB", id=66 (the smallest droplet size)
+const DefaultSize   = "512mb"
+
 // The unique id for the builder
 const BuilderId = "pearkes.digitalocean"
 
@@ -30,6 +42,10 @@ type config struct {
 	SizeID   uint   `mapstructure:"size_id"`
 	ImageID  uint   `mapstructure:"image_id"`
 
+	Region   string `mapstructure:"region"`
+	Size     string `mapstructure:"size"`
+	Image    string `mapstructure:"image"`
+
 	PrivateNetworking bool   `mapstructure:"private_networking"`
 	SnapshotName      string `mapstructure:"snapshot_name"`
 	DropletName       string `mapstructure:"droplet_name"`
@@ -78,19 +94,28 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
 		b.config.ClientID = os.Getenv("DIGITALOCEAN_CLIENT_ID")
 	}
 
-	if b.config.RegionID == 0 {
-		// Default to Region "New York"
-		b.config.RegionID = 1
+	if b.config.Region == "" {
+		if b.config.RegionID != 0 {
+			b.config.Region = fmt.Sprintf("%v", b.config.RegionID)
+		} else {
+			b.config.Region = DefaultRegion
+		}
 	}
 
-	if b.config.SizeID == 0 {
-		// Default to 512mb, the smallest droplet size
-		b.config.SizeID = 66
+	if b.config.Size == "" {
+		if b.config.SizeID != 0 {
+			b.config.Size = fmt.Sprintf("%v", b.config.SizeID)
+		} else {
+			b.config.Size = DefaultSize
+		}
 	}
 
-	if b.config.ImageID == 0 {
-		// Default to base image "Ubuntu 12.04.4 x64 (id: 3101045)"
-		b.config.ImageID = 3101045
+	if b.config.Image == "" {
+		if b.config.ImageID != 0 {
+			b.config.Image = fmt.Sprintf("%v", b.config.ImageID)
+		} else {
+			b.config.Image = DefaultImage
+		}
 	}
 
 	if b.config.SnapshotName == "" {
@@ -226,9 +251,18 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		return nil, nil
 	}
 
-	region_id := state.Get("region_id").(uint)
+	sregion := state.Get("region")
+
+	var region string
+
+	if sregion != nil {
+		region = sregion.(string)
+	} else {
+		region = fmt.Sprintf("%v", state.Get("region_id").(uint))
+	}
+
+	found_region, err := client.Region(region)
 
-	regionName, err := client.RegionName(region_id)
 	if err != nil {
 		return nil, err
 	}
@@ -236,8 +270,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 	artifact := &Artifact{
 		snapshotName: state.Get("snapshot_name").(string),
 		snapshotId:   state.Get("snapshot_image_id").(uint),
-		regionId:     region_id,
-		regionName:   regionName,
+		regionName:   found_region.Name,
 		client:       client,
 	}
 

builder/digitalocean/builder_test.go

@@ -142,7 +142,7 @@ func TestBuilderPrepare_InvalidKey(t *testing.T) {
 	}
 }
 
-func TestBuilderPrepare_RegionID(t *testing.T) {
+func TestBuilderPrepare_Region(t *testing.T) {
 	var b Builder
 	config := testConfig()
 
@@ -155,12 +155,15 @@ func TestBuilderPrepare_RegionID(t *testing.T) {
 		t.Fatalf("should not have error: %s", err)
 	}
 
-	if b.config.RegionID != 1 {
-		t.Errorf("invalid: %d", b.config.RegionID)
+	if b.config.Region != DefaultRegion {
+		t.Errorf("found %s, expected %s", b.config.Region, DefaultRegion)
 	}
 
+	expected := "sfo1"
+
 	// Test set
-	config["region_id"] = 2
+	config["region_id"] = 0
+	config["region"] = expected
 	b = Builder{}
 	warnings, err = b.Prepare(config)
 	if len(warnings) > 0 {
@@ -170,12 +173,12 @@ func TestBuilderPrepare_RegionID(t *testing.T) {
 		t.Fatalf("should not have error: %s", err)
 	}
 
-	if b.config.RegionID != 2 {
-		t.Errorf("invalid: %d", b.config.RegionID)
+	if b.config.Region != expected {
+		t.Errorf("found %s, expected %s", b.config.Region, expected)
 	}
 }
 
-func TestBuilderPrepare_SizeID(t *testing.T) {
+func TestBuilderPrepare_Size(t *testing.T) {
 	var b Builder
 	config := testConfig()
 
@@ -188,12 +191,15 @@ func TestBuilderPrepare_SizeID(t *testing.T) {
 		t.Fatalf("should not have error: %s", err)
 	}
 
-	if b.config.SizeID != 66 {
-		t.Errorf("invalid: %d", b.config.SizeID)
+	if b.config.Size != DefaultSize {
+		t.Errorf("found %s, expected %s", b.config.Size, DefaultSize)
 	}
 
+	expected := "1024mb"
+
 	// Test set
-	config["size_id"] = 67
+	config["size_id"] = 0
+	config["size"] = expected
 	b = Builder{}
 	warnings, err = b.Prepare(config)
 	if len(warnings) > 0 {
@@ -203,12 +209,12 @@ func TestBuilderPrepare_SizeID(t *testing.T) {
 		t.Fatalf("should not have error: %s", err)
 	}
 
-	if b.config.SizeID != 67 {
-		t.Errorf("invalid: %d", b.config.SizeID)
+	if b.config.Size != expected {
+		t.Errorf("found %s, expected %s", b.config.Size, expected)
 	}
 }
 
-func TestBuilderPrepare_ImageID(t *testing.T) {
+func TestBuilderPrepare_Image(t *testing.T) {
 	var b Builder
 	config := testConfig()
 
@@ -221,12 +227,15 @@ func TestBuilderPrepare_ImageID(t *testing.T) {
 		t.Fatalf("should not have error: %s", err)
 	}
 
-	if b.config.SizeID != 66 {
-		t.Errorf("invalid: %d", b.config.SizeID)
+	if b.config.Image != DefaultImage {
+		t.Errorf("found %s, expected %s", b.config.Image, DefaultImage)
 	}
 
+	expected := "ubuntu-14-04-x64"
+
 	// Test set
-	config["size_id"] = 2
+	config["image_id"] = 0
+	config["image"] = expected
 	b = Builder{}
 	warnings, err = b.Prepare(config)
 	if len(warnings) > 0 {
@@ -236,8 +245,8 @@ func TestBuilderPrepare_ImageID(t *testing.T) {
 		t.Fatalf("should not have error: %s", err)
 	}
 
-	if b.config.SizeID != 2 {
-		t.Errorf("invalid: %d", b.config.SizeID)
+	if b.config.Image != expected {
+		t.Errorf("found %s, expected %s", b.config.Image, expected)
 	}
 }
 

builder/digitalocean/step_create_droplet.go

@@ -19,7 +19,7 @@ func (s *stepCreateDroplet) Run(state multistep.StateBag) multistep.StepAction {
 	ui.Say("Creating droplet...")
 
 	// Create the droplet based on configuration
-	dropletId, err := client.CreateDroplet(c.DropletName, c.SizeID, c.ImageID, c.RegionID, sshKeyId, c.PrivateNetworking)
+	dropletId, err := client.CreateDroplet(c.DropletName, c.Size, c.Image, c.Region, sshKeyId, c.PrivateNetworking)
 
 	if err != nil {
 		err := fmt.Errorf("Error creating droplet: %s", err)

builder/digitalocean/step_snapshot.go

@@ -62,7 +62,7 @@ func (s *stepSnapshot) Run(state multistep.StateBag) multistep.StepAction {
 
 	state.Put("snapshot_image_id", imageId)
 	state.Put("snapshot_name", c.SnapshotName)
-	state.Put("region_id", c.RegionID)
+	state.Put("region", c.Region)
 
 	return multistep.ActionContinue
 }

website/source/docs/builders/digitalocean.html.markdown

@@ -35,16 +35,30 @@ Required:
 
 Optional:
 
+* `image` (string) - The name (or slug) of the base image to use. This is the
+  image that will be used to launch a new droplet and provision it. This
+  defaults to 'ubuntu-12-04-x64' which is the slug for "Ubuntu 12.04.4 x64".
+  See https://developers.digitalocean.com/images/ for the accepted image names/slugs.
+
 * `image_id` (int) - The ID of the base image to use. This is the image that
-  will be used to launch a new droplet and provision it. Defaults to "3101045",
-  which happens to be "Ubuntu 12.04.4 x64".
+  will be used to launch a new droplet and provision it.
+  This setting is deprecated. Use `image` instead.
+
+* `region` (string) - The name (or slug) of the region to launch the droplet in.
+  Consequently, this is the region where the snapshot will be available.
+  This defaults to "nyc1", which the slug for "New York 1".
+  See https://developers.digitalocean.com/regions/ for the accepted region names/slugs.
 
 * `region_id` (int) - The ID of the region to launch the droplet in. Consequently,
-  this is the region where the snapshot will be available. This defaults to
-  "1", which is "New York 1".
+  this is the region where the snapshot will be available.
+  This setting is deprecated. Use `region` instead.
+
+* `size` (string) - The name (or slug) of the droplet size to use.
+  This defaults to "512mb", which is the slug for "512MB".
+  See https://developers.digitalocean.com/sizes/ for the accepted size names/slugs.
 
-* `size_id` (int) - The ID of the droplet size to use. This defaults to "66",
-  which is the 512MB droplet.
+* `size_id` (int) - The ID of the droplet size to use.
+  This setting is deprecated. Use `size` instead.
 
 * `private_networking` (bool) - Set to `true` to enable private networking
   for the droplet being created. This defaults to `false`, or not enabled.