Plumb the "TEKTON_RESOURCE_NAME" environment variable into more resource containers.

As part of TEP-0025 (hermetic builds), we need to know which containers/steps are part
of the "Tekton system" and which ones are part of the Task definition. This PR adds
the TEKTON_RESOURCE_NAME environment variable to the injected copy containers.

This variable is already used by several of the existing resources (git, image).

Author: Dan Lorenc

pkg/apis/resource/v1alpha1/storage/artifact_pvc.go

@@ -54,6 +54,10 @@ func (p *ArtifactPVC) GetCopyFromStorageToSteps(name, sourcePath, destinationPat
 		Name:    names.SimpleNameGenerator.RestrictLengthWithRandomSuffix(fmt.Sprintf("source-copy-%s", name)),
 		Image:   p.ShellImage,
 		Command: []string{"cp", "-r", fmt.Sprintf("%s/.", sourcePath), destinationPath},
+		Env: []corev1.EnvVar{{
+			Name:  "TEKTON_RESOURCE_NAME",
+			Value: name,
+		}},
 	}}}
 }
 
@@ -69,6 +73,10 @@ func (p *ArtifactPVC) GetCopyToStorageFromSteps(name, sourcePath, destinationPat
 		Image:        p.ShellImage,
 		Command:      []string{"cp", "-r", fmt.Sprintf("%s/.", sourcePath), destinationPath},
 		VolumeMounts: []corev1.VolumeMount{GetPvcMount(p.Name)},
+		Env: []corev1.EnvVar{{
+			Name:  "TEKTON_RESOURCE_NAME",
+			Value: name,
+		}},
 	}}}
 }
 

pkg/apis/resource/v1alpha1/storage/artifact_pvc_test.go

@@ -40,6 +40,7 @@ func TestPVCGetCopyFromContainerSpec(t *testing.T) {
 		Image: "busybox",
 
 		Command: []string{"cp", "-r", "src-path/.", "/workspace/destination"},
+		Env:     []corev1.EnvVar{{Name: "TEKTON_RESOURCE_NAME", Value: "workspace"}},
 	}}}
 
 	got := pvc.GetCopyFromStorageToSteps("workspace", "src-path", "/workspace/destination")
@@ -65,6 +66,7 @@ func TestPVCGetCopyToContainerSpec(t *testing.T) {
 		Image:        "busybox",
 		Command:      []string{"cp", "-r", "src-path/.", "/workspace/destination"},
 		VolumeMounts: []corev1.VolumeMount{{MountPath: "/pvc", Name: "pipelinerun-pvc"}},
+		Env:          []corev1.EnvVar{{Name: "TEKTON_RESOURCE_NAME", Value: "workspace"}},
 	}}}
 
 	got := pvc.GetCopyToStorageFromSteps("workspace", "src-path", "/workspace/destination")

pkg/reconciler/taskrun/resources/input_resource_test.go

@@ -594,6 +594,7 @@ func TestAddInputResourceToTask(t *testing.T) {
 				Image:        "busybox",
 				Command:      []string{"cp", "-r", "prev-task-path/.", "/workspace/gitspace"},
 				VolumeMounts: []corev1.VolumeMount{{MountPath: "/pvc", Name: "pipelinerun-pvc"}},
+				Env:          []corev1.EnvVar{{Name: "TEKTON_RESOURCE_NAME", Value: "gitspace"}},
 			}}},
 			Volumes: []corev1.Volume{{
 				Name: "pipelinerun-pvc",
@@ -727,6 +728,7 @@ gsutil cp gs://fake-bucket/rules.zip /workspace/gcs-dir
 				Image:        "busybox",
 				Command:      []string{"cp", "-r", "prev-task-path/.", "/workspace/gcs-dir"},
 				VolumeMounts: []corev1.VolumeMount{{MountPath: "/pvc", Name: "pipelinerun-pvc"}},
+				Env:          []corev1.EnvVar{{Name: "TEKTON_RESOURCE_NAME", Value: "workspace"}},
 			}}},
 			Volumes: []corev1.Volume{{
 				Name: "pipelinerun-pvc",

pkg/reconciler/taskrun/resources/output_resource_test.go

@@ -238,6 +238,7 @@ func TestValidOutputResources(t *testing.T) {
 				Name:      "pipelinerun-pvc",
 				MountPath: "/pvc",
 			}},
+			Env: []corev1.EnvVar{{Name: "TEKTON_RESOURCE_NAME", Value: "source-git"}},
 		}}},
 		wantVolumes: []corev1.Volume{
 			{
@@ -311,6 +312,7 @@ func TestValidOutputResources(t *testing.T) {
 				Name:      "pipelinerun-pvc",
 				MountPath: "/pvc",
 			}},
+			Env: []corev1.EnvVar{{Name: "TEKTON_RESOURCE_NAME", Value: "source-git"}},
 		}}},
 		wantVolumes: []corev1.Volume{
 			{
@@ -483,6 +485,7 @@ func TestValidOutputResources(t *testing.T) {
 				Image:        "busybox",
 				Command:      []string{"cp", "-r", "/workspace/output/source-workspace/.", "pipeline-task-path"},
 				VolumeMounts: []corev1.VolumeMount{{Name: "pipelinerun-parent-pvc", MountPath: "/pvc"}},
+				Env:          []corev1.EnvVar{{Name: "TEKTON_RESOURCE_NAME", Value: "source-gcs"}},
 			}},
 			{Container: corev1.Container{
 				Name:  "upload-source-gcs-78c5n",
@@ -573,6 +576,7 @@ func TestValidOutputResources(t *testing.T) {
 				Image:        "busybox",
 				Command:      []string{"cp", "-r", "/workspace/output/source-workspace/.", "pipeline-task-path"},
 				VolumeMounts: []corev1.VolumeMount{{Name: "pipelinerun-pvc", MountPath: "/pvc"}},
+				Env:          []corev1.EnvVar{{Name: "TEKTON_RESOURCE_NAME", Value: "source-gcs"}},
 			}},
 			{Container: corev1.Container{
 				Name:  "upload-source-gcs-78c5n",
@@ -1471,7 +1475,6 @@ func TestInputOutputBucketResources(t *testing.T) {
 				VolumeMounts: nil,
 				Command:      []string{"gsutil"},
 				Args:         []string{"rsync", "-d", "-r", "/workspace/output/source-workspace", "gs://some-bucket"},
-				Env:          nil,
 			}},
 		},
 		wantVolumes: []corev1.Volume{{