Add support for configuration option for apps, which allows deploying…

… apps without building an app-specific image.

CHANGELOG.md

@@ -1,3 +1,7 @@
+# v2.4.0
+
+* Add support for `skipBuild` configuration option for apps, which allows deploying apps without building an app-specific image.
+
 # v2.3.0
 
 * Introduce aliases `kbuild` for `kd build`, `kdeploy` for `kd deploy` and `kctl` for `kd ctl`.

pkg/build/cmd.go

@@ -9,6 +9,10 @@ import (
 )
 
 func Run(log *util.Logger, app *config.ResolvedApp) error {
+	if app.SkipBuild {
+		log.Fatal("Build is skipped for", app.Name)
+	}
+
 	if app.PreBuild != "" {
 		if strings.Contains(app.PreBuild, "/.ssh") {
 			log.Warn("Pre-build command in 'kdeploy.conf' contains reference to '.ssh'.")

pkg/config/types.go

@@ -13,6 +13,7 @@ type App struct {
 	Name      string `yaml:"name,omitempty"`
 	Path      string `yaml:"path,omitempty"`
 	Root      string `yaml:"root,omitempty"`
+	SkipBuild bool   `yaml:"skipBuild,omitempty"`
 	Default   bool   `yaml:"default,omitempty"`
 	Platform  string `yaml:"platform,omitempty"`
 	PreBuild  string `yaml:"preBuild,omitempty"`

pkg/deploy/cmd.go

@@ -12,10 +12,14 @@ import (
 )
 
 func Run(log *util.Logger, app *config.ResolvedApp, target *config.ResolvedTarget) error {
-	log.Note("Retrieving image", app.Name+":"+app.Tag)
-	img, err := docker.GetImage(log, app.Repository())
-	if err != nil {
-		return err
+	var img docker.ImageManifest
+	if !app.SkipBuild {
+		log.Note("Retrieving image", app.Name+":"+app.Tag)
+		image, err := docker.GetImage(log, app.Repository())
+		if err != nil {
+			return err
+		}
+		img = image
 	}
 
 	res, err := kustomize.GetResources(log, app, target, img.Descriptor.Digest.String())
@@ -34,10 +38,12 @@ func Run(log *util.Logger, app *config.ResolvedApp, target *config.ResolvedTarge
 		return err
 	}
 
-	log.Note("Tagging image", app.Name+":"+target.Name)
-	err = docker.TagImage(log, img, app.RepositoryWithTag(target.Name))
-	if err != nil {
-		return err
+	if !app.SkipBuild {
+		log.Note("Tagging image", app.Name+":"+target.Name)
+		err = docker.TagImage(log, img, app.RepositoryWithTag(target.Name))
+		if err != nil {
+			return err
+		}
 	}
 
 	ingresses, err := kubectl.GetGCEIngresses(log, target)
@@ -62,6 +68,10 @@ func Run(log *util.Logger, app *config.ResolvedApp, target *config.ResolvedTarge
 		log.Note("Requesting cache flush for", strings.Join(names, ", "))
 	}
 
-	log.Success("Successfully deployed", app.Repository(), "to", target.Name)
+	if app.SkipBuild {
+		log.Success("Successfully deployed", app.Name, "to", target.Name)
+	} else {
+		log.Success("Successfully deployed", app.Repository(), "to", target.Name)
+	}
 	return nil
 }

pkg/internal/kustomize/resources.go

@@ -44,6 +44,13 @@ func GetResources(log *util.Logger, app *config.ResolvedApp, target *config.Reso
 
 	// Search and replace in the generated YAML to set the actual deployment
 	// image. This is the reason we cannot use 'kubectl -k ..' directly.
+
+	if app.SkipBuild {
+		if bytes.Contains(yml, []byte(" image: "+app.Name)) {
+			log.Fatal("Image reference found, but build was skipped for", app.Name)
+		}
+	}
+
 	url := app.RepositoryWithDigest(digest)
 	buf := bytes.NewBuffer(bytes.Replace(yml, []byte(" image: "+app.Name), []byte(" image: "+url), -1))