Add version to compute artifact action

README.md

@@ -33,6 +33,7 @@ The Pipeline Builder is a collection of tools related to GitHub Actions and othe
     - [CA APM Dependency](#ca-apm-dependency)
     - [CF Java Index Dependency](#cf-java-index-dependency)
     - [Clojure Tools Dependency](#clojure-tools-dependency)
+    - [Compute Artifact Dependencies](#compute-artifact-dependencies)
     - [Draft Release](#draft-release)
     - [Foojay Dependency](#foojay-dependency)
     - [GCS Dependency](#gcs-dependency)
@@ -384,6 +385,7 @@ with:
 ```
 
 ### Clojure Tools Dependency
+
 The Clojure Tools Dependency watches [Clojure Tools repositories](https://github.com/clojure/clojure-tools) for new versions. It then filters based on the [stable.properties](https://raw.githubusercontent.com/clojure/brew-install/%s/stable.properties) file in their brew tap repo, allowing it to pick the most recent stable version.
 
 ```yaml
@@ -392,6 +394,28 @@ with:
   token:      ${{ secrets.JAVA_GITHUB_TOKEN }}
 ```
 
+### Compute Artifact Dependencies
+
+The Compute Artifact Dependencies takes a buildpack image and produces the list of included dependencies. It's used for generating release notes. If the image is a composite buildpack, then it will recursively load all of the referenced buildpacks, pulling metadata directly from Github, and give a compete, sorted and deduplicated list of dependencies.
+
+A Github token is strongly recommended. This is for fetching information from Github, and without it you might get rate limited. It is required for private repositories.
+
+The `package` and `version` entries are required. They are required to indiciate the specific buildpack that will be described.
+
+A mapper will add additional permutations of Github project URIs to try. For example, if you have an image URI of `gcr.io/foo/bar:1.2.3` but the Github project is at `github.com/org/foo-bar` then you can add a mapper of `|foo\/bar|org/foo-bar|` to have `compute-artifact-dependencies` try both. You can specify as many mappers as you want, with each mapper generating a new URI for `compute-artifact-dependencies` to try. It will stop when it hits the first URL that successfully pulls back the `buildpack.toml` file.
+
+The output is `artifact-reference-description`, which can be referenced by other jobs.
+
+```yaml
+uses: docker://ghcr.io/paketo-buildpacks/actions/compute-artifact-description:main
+with:
+  github_token: ${{ secrets.JAVA_GITHUB_TOKEN }}
+  package:      "gcr.io/paketo-buildpacks/java"
+  version:      "1.2.3"
+  mapper_1:     '|tanzu-buildpacks|paketo-buildpacks|'
+  mapper_2:     '|tanzu-buildpacks\/|pivotal-cf/tanzu-|'
+```
+
 ### Draft Release
 
 The `draft-release` action is used to augment release notes generated by the `release-drafter` action. The `release-drafter` pulls in notes based on PR changes. The `draft-release` action is what augments those with all of the buildpack specific information. For example, dependencies included or order groups.
@@ -404,8 +428,8 @@ A mapper will add additional permutations of Github project URIs to try. For exa
 uses: docker://ghcr.io/paketo-buildpacks/actions/draft-release:main
 with:
   github_token:     ${{ secrets.JAVA_GITHUB_TOKEN }}
-  mapper_1:   '|tanzu-buildpacks|paketo-buildpacks|'
-  mapper_2:   '|tanzu-buildpacks\/|pivotal-cf/tanzu-|'
+  mapper_1:         '|tanzu-buildpacks|paketo-buildpacks|'
+  mapper_2:         '|tanzu-buildpacks\/|pivotal-cf/tanzu-|'
   release_body:     ${{ steps.release-drafter.outputs.body }}
   release_id:       ${{ steps.release-drafter.outputs.id }}
   release_name:     ${{ steps.release-drafter.outputs.name }}

actions/compute-artifact-description/main.go

@@ -33,6 +33,17 @@ import (
 func main() {
 	inputs := actions.NewInputs()
 
+	if _, found := inputs["package"]; !found {
+		panic(fmt.Errorf("unable to read package, package must be set"))
+	}
+
+	if _, found := inputs["version"]; !found {
+		panic(fmt.Errorf("unable to read version, version must be set"))
+	}
+
+	imgUri := fmt.Sprintf("%s:%s", inputs["package"], inputs["version"])
+	fmt.Println("Loading image URI:", imgUri)
+
 	var c *http.Client
 	if s, ok := inputs["github_token"]; ok {
 		c = oauth2.NewClient(context.Background(), oauth2.StaticTokenSource(&oauth2.Token{AccessToken: s}))
@@ -44,7 +55,7 @@ func main() {
 		RegexMappers: parseMappers(inputs),
 	}
 
-	mainBp, err := loader.LoadBuildpack(inputs["package"])
+	mainBp, err := loader.LoadBuildpack(imgUri)
 	if err != nil {
 		panic(err)
 	}