Output artifact name when creating a new artifact

api/build.go

@@ -9,9 +9,10 @@ import (
 )
 
 // Build builds an artifact from a Pakfile
-func Build(pakfile *pak.PakFile) {
+func Build(pakfile *pak.PakFile) string {
 	artifact := new(archivex.TarFile)
-	artifact.Create(fmt.Sprintf("%s.tar", pakfile.ArtifactName))
+	fullArtifactName := fmt.Sprintf("%s.tar", pakfile.ArtifactName)
+	artifact.Create(fullArtifactName)
 
 	var metadataContent []byte
 
@@ -40,4 +41,6 @@ func Build(pakfile *pak.PakFile) {
 	artifact.AddAll(pakfile.Path, true)
 
 	artifact.Close()
+
+	return fullArtifactName
 }

api/build_test.go

@@ -38,7 +38,9 @@ var _ = Describe("Build", func() {
 	})
 
 	It("should build a pak package", func() {
-		api.Build(pakFile)
+		out := api.Build(pakFile)
+		Expect(out).To(Equal(fmt.Sprintf("%s.tar", artifactName)))
+
 		_, err := os.Stat(fmt.Sprintf("%s.tar", artifactName))
 		Expect(os.IsNotExist(err)).To(Equal(false))
 	})

api/promote.go

@@ -14,13 +14,13 @@ import (
 )
 
 // Promote will promote the artifact to a given promote label
-func Promote(artifactName string, options map[string]interface{}) error {
+func Promote(artifactName string, options map[string]interface{}) (string, error) {
 	inspectOptions := map[string]interface{}{}
 
 	// get metadata
 	jsonMetadata, err := Inspect(artifactName, inspectOptions)
 	if err != nil {
-		return errors.Wrap(err, "failed to inspect artifact metadata")
+		return "", errors.Wrap(err, "failed to inspect artifact metadata")
 	}
 
 	var metadata map[string]interface{}
@@ -54,7 +54,7 @@ func Promote(artifactName string, options map[string]interface{}) error {
 		}
 
 		if err != nil {
-			return errors.Wrap(err, "failed to resolve env var")
+			return "", errors.Wrap(err, "failed to resolve env var")
 		}
 	}
 
@@ -66,8 +66,9 @@ func Promote(artifactName string, options map[string]interface{}) error {
 		newArtifactname = value.(string)
 	} // generate random name if name empty?
 
+	fullArtifactName := fmt.Sprintf("%s.tar", newArtifactname)
 	newArtifact := new(archivex.TarFile)
-	newArtifact.Create(fmt.Sprintf("%s.tar", newArtifactname))
+	newArtifact.Create(fullArtifactName)
 
 	// create new pak.metadata with the old data and the new one
 	jsonString, err := json.MarshalIndent(metadata, "", "  ")
@@ -81,7 +82,7 @@ func Promote(artifactName string, options map[string]interface{}) error {
 	// Add packaged files from the old artifact to the new one
 	pkg, err := os.Open(artifactName)
 	if err != nil {
-		return errors.Wrapf(err, "failed to open artifact %s", artifactName)
+		return "", errors.Wrapf(err, "failed to open artifact %s", artifactName)
 	}
 
 	tr := tar.NewReader(pkg)
@@ -94,12 +95,12 @@ func Promote(artifactName string, options map[string]interface{}) error {
 				break
 			}
 
-			return errors.Wrap(err, "could not get tar header")
+			return "", errors.Wrap(err, "could not get tar header")
 		}
 
 		fileContent, err := ioutil.ReadAll(tr)
 		if err != nil {
-			return errors.Wrapf(err, "could not read artifact %s", artifactName)
+			return "", errors.Wrapf(err, "could not read artifact %s", artifactName)
 		}
 
 		// Don't add metadata file since we will be adding a new one with new metadata
@@ -111,5 +112,5 @@ func Promote(artifactName string, options map[string]interface{}) error {
 
 	newArtifact.Close()
 
-	return nil
+	return fullArtifactName, nil
 }

api/promote_test.go

@@ -55,20 +55,21 @@ var _ = Describe("Promote", func() {
 	})
 
 	It("should create a new artifact", func() {
-		err := api.Promote(
+		out, err := api.Promote(
 			fmt.Sprintf("%s.tar", artifactName),
 			map[string]interface{}{
 				"label": "rc",
 			})
 
+		Expect(out).To(Equal(fmt.Sprintf("%s.tar", promoteArtifactName)))
 		Expect(err).To(BeNil())
 
 		_, err = os.Stat(fmt.Sprintf("%s.tar", promoteArtifactName))
 		Expect(os.IsNotExist(err)).To(Equal(false))
 	})
 
 	It("should create a pak.metadata inside the artifact", func() {
-		err := api.Promote(
+		_, err := api.Promote(
 			fmt.Sprintf("%s.tar", artifactName),
 			map[string]interface{}{
 				"label": "rc",

cmd/build.go

@@ -20,7 +20,8 @@ var buildCmd = &cobra.Command{
 			os.Exit(1)
 		}
 
-		api.Build(pakfile)
+		fmt.Println(api.Build(pakfile))
+
 	},
 }
 

cmd/promote.go

@@ -29,11 +29,13 @@ var promoteCmd = &cobra.Command{
 			"label": label,
 		}
 
-		err := api.Promote(artifactName, options)
+		artifactName, err := api.Promote(artifactName, options)
 		if err != nil {
 			fmt.Printf("failed to promote %s: %s", artifactName, err)
 			os.Exit(1)
 		}
+
+		fmt.Println(artifactName)
 	},
 }