Adds support for specifying image labels and annotation in buildrun

pkg/reconciler/buildrun/resources/mutate.go

@@ -18,20 +18,37 @@ import (
 func amendTaskSpecWithImageMutate(
 	cfg *config.Config,
 	taskSpec *tektonv1beta1.TaskSpec,
-	buildOutput buildv1alpha1.Image,
+	buildOutput, buildRunOutput buildv1alpha1.Image,
 ) {
 	// initialize the step from the template
 	mutateStep := tektonv1beta1.Step{
 		Container: *cfg.MutateImageContainerTemplate.DeepCopy(),
 	}
 
 	mutateStep.Container.Name = imageMutateContainerName
-	mutateStep.Container.Args = mutateArgs(buildOutput.Annotations, buildOutput.Labels)
+
+	// if labels or annotations are specified in buildRun then merge them with build's
+	labels := mergeMaps(buildOutput.Labels, buildRunOutput.Labels)
+	annotations := mergeMaps(buildOutput.Annotations, buildRunOutput.Annotations)
+
+	mutateStep.Container.Args = mutateArgs(annotations, labels)
 
 	// append the mutate step
 	taskSpec.Steps = append(taskSpec.Steps, mutateStep)
 }
 
+// mergeMaps takes 2 maps as input and merge the second into the first
+// values in second would takes precedence if both maps have same keys
+func mergeMaps(first map[string]string, second map[string]string) map[string]string {
+	if len(first) == 0 {
+		first = map[string]string{}
+	}
+	for k, v := range second {
+		first[k] = v
+	}
+	return first
+}
+
 func mutateArgs(annotations, labels map[string]string) []string {
 	args := []string{
 		"--image",

pkg/reconciler/buildrun/resources/taskrun.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 
 	taskv1 "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1alpha1"
-	v1beta1 "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1beta1"
+	"github.com/tektoncd/pipeline/pkg/apis/pipeline/v1beta1"
 
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -213,10 +213,16 @@ func GenerateTaskSpec(
 		}
 	}
 
+	buildRunOutput := buildRun.Spec.Output
+	if buildRunOutput == nil {
+		buildRunOutput = &buildv1alpha1.Image{}
+	}
+
 	// Amending task spec with image mutate step if annotations or labels are
-	// specified in build manifest
-	if len(build.Spec.Output.Annotations) > 0 || len(build.Spec.Output.Labels) > 0 {
-		amendTaskSpecWithImageMutate(cfg, &generatedTaskSpec, build.Spec.Output)
+	// specified in build manifest or buildRun manifest
+	if len(build.Spec.Output.Annotations) > 0 || len(build.Spec.Output.Labels) > 0 ||
+		len(buildRunOutput.Annotations) > 0 || len(buildRunOutput.Labels) > 0 {
+		amendTaskSpecWithImageMutate(cfg, &generatedTaskSpec, build.Spec.Output, *buildRunOutput)
 	}
 
 	return &generatedTaskSpec, nil

pkg/reconciler/buildrun/resources/taskrun_test.go

@@ -280,6 +280,90 @@ var _ = Describe("GenerateTaskrun", func() {
 				Expect(err.Error()).To(Equal("error(s) occurred merging environment variables into BuildStrategy \"buildah\" steps: [environment variable \"MY_VAR_1\" already exists, environment variable \"MY_VAR_2\" already exists]"))
 			})
 		})
+
+		Context("when only BuildRun has output image labels and annotation defined ", func() {
+			BeforeEach(func() {
+				build, err = ctl.LoadBuildYAML([]byte(test.BuildahBuildWithOutput))
+				Expect(err).To(BeNil())
+
+				buildRun, err = ctl.LoadBuildRunFromBytes([]byte(test.BuildahBuildRunWithOutputImageLabelsAndAnnotations))
+				Expect(err).To(BeNil())
+
+				buildStrategy, err = ctl.LoadBuildStrategyFromBytes([]byte(test.MinimalBuildahBuildStrategy))
+				Expect(err).To(BeNil())
+				buildStrategy.Spec.BuildSteps[0].ImagePullPolicy = "Always"
+
+				expectedCommandOrArg = []string{
+					"bud", "--tag=$(params.shp-output-image)", fmt.Sprintf("--file=$(inputs.params.%s)", "DOCKERFILE"), "$(params.shp-source-context)",
+				}
+
+				JustBeforeEach(func() {
+					got, err = resources.GenerateTaskSpec(config.NewDefaultConfig(), build, buildRun, buildStrategy.Spec.BuildSteps, []buildv1alpha1.Parameter{})
+					Expect(err).To(BeNil())
+				})
+
+				It("should contain a step to mutate the image with labels and annotations merged from build and buildrun", func() {
+					Expect(got.Steps[3].Name).To(Equal("mutate-image"))
+					Expect(got.Steps[3].Command[0]).To(Equal("/ko-app/mutate-image"))
+					Expect(got.Steps[3].Args).To(Equal([]string{
+						"--image",
+						"$(params.shp-output-image)",
+						"--result-file-image-digest",
+						"$(results.shp-image-digest.path)",
+						"result-file-image-size",
+						"$(results.shp-image-size.path)",
+						"--annotation",
+						"org.opencontainers.owner=my-company",
+						"--label",
+						"maintainer=new-team@my-company.com",
+						"foo=bar",
+					}))
+				})
+			})
+		})
+
+		Context("when Build and BuildRun both have output image labels and annotation defined ", func() {
+			BeforeEach(func() {
+				build, err = ctl.LoadBuildYAML([]byte(test.BuildahBuildWithAnnotationAndLabel))
+				Expect(err).To(BeNil())
+
+				buildRun, err = ctl.LoadBuildRunFromBytes([]byte(test.BuildahBuildRunWithOutputImageLabelsAndAnnotations))
+				Expect(err).To(BeNil())
+
+				buildStrategy, err = ctl.LoadBuildStrategyFromBytes([]byte(test.MinimalBuildahBuildStrategy))
+				Expect(err).To(BeNil())
+				buildStrategy.Spec.BuildSteps[0].ImagePullPolicy = "Always"
+
+				expectedCommandOrArg = []string{
+					"bud", "--tag=$(params.shp-output-image)", fmt.Sprintf("--file=$(inputs.params.%s)", "DOCKERFILE"), "$(params.shp-source-context)",
+				}
+
+				JustBeforeEach(func() {
+					got, err = resources.GenerateTaskSpec(config.NewDefaultConfig(), build, buildRun, buildStrategy.Spec.BuildSteps, []buildv1alpha1.Parameter{})
+					Expect(err).To(BeNil())
+				})
+
+				It("should contain a step to mutate the image with labels and annotations merged from build and buildrun", func() {
+					Expect(got.Steps[3].Name).To(Equal("mutate-image"))
+					Expect(got.Steps[3].Command[0]).To(Equal("/ko-app/mutate-image"))
+					Expect(got.Steps[3].Args).To(Equal([]string{
+						"--image",
+						"$(params.shp-output-image)",
+						"--result-file-image-digest",
+						"$(results.shp-image-digest.path)",
+						"result-file-image-size",
+						"$(results.shp-image-size.path)",
+						"--annotation",
+						"org.opencontainers.owner=my-company",
+						"org.opencontainers.image.url=https://my-company.com/images",
+						"--label",
+						"maintainer=new-team@my-company.com",
+						"foo=bar",
+					}))
+				})
+			})
+		})
+
 	})
 
 	Describe("Generate the TaskRun", func() {

test/buildrun_samples.go

@@ -23,6 +23,28 @@ spec:
           fieldPath: "my-fieldpath"
 `
 
+// BuildahBuildRunWithOutputImageLabelsAndAnnotations defines a BuildRun
+// with a output image labels and annotation
+const BuildahBuildRunWithOutputImageLabelsAndAnnotations = `
+apiVersion: shipwright.io/v1alpha1
+kind: BuildRun
+metadata:
+  name: buildah-run
+  namespace: build-test
+spec:
+  buildRef:
+    name: buildah
+  serviceAccount:
+    name: buildpacks-v3-serviceaccount
+  output:
+    image: image-registry.openshift-image-registry.svc:5000/example/buildpacks-app-v2
+	labels:
+	  "maintainer": "new-team@my-company.com"
+	  "foo": "bar"
+	annotations:
+	  "org.opencontainers.owner": "my-company"
+`
+
 // MinimalBuildahBuildRun defines a simple
 // BuildRun with a referenced Build
 const MinimalBuildahBuildRun = `