Set PrimaryContainerKey annotation by default (#337)

* added pod plugin optimizations

Signed-off-by: Daniel Rammer <daniel@union.ai>

* fixed unit tests

Signed-off-by: Daniel Rammer <daniel@union.ai>

---------

Signed-off-by: Daniel Rammer <daniel@union.ai>

Author: hamersaw

go/tasks/plugins/array/k8s/integration_test.go

@@ -77,8 +77,18 @@ func advancePodPhases(ctx context.Context, store *storage.DataStore, outputWrite
 
 	for _, pod := range podList.Items {
 		newPhase := nextHappyPodPhase(pod.Status.Phase)
+		primaryContainerName := pod.Annotations["primary_container_name"]
+		if len(primaryContainerName) <= 0 {
+			primaryContainerName = "foo"
+		}
 		pod.Status.ContainerStatuses = []v1.ContainerStatus{
-			{ContainerID: "cont_123"},
+			v1.ContainerStatus{
+				Name:        primaryContainerName,
+				ContainerID: primaryContainerName,
+				State: v1.ContainerState{
+					Running: &v1.ContainerStateRunning{},
+				},
+			},
 		}
 
 		if pod.Status.Phase != newPhase && newPhase == v1.PodSucceeded {
@@ -95,6 +105,10 @@ func advancePodPhases(ctx context.Context, store *storage.DataStore, outputWrite
 				}
 			}
 
+			pod.Status.ContainerStatuses[0].State = v1.ContainerState{
+				Terminated: &v1.ContainerStateTerminated{},
+			}
+
 			ref := outputWriter.GetOutputPath()
 			if idx > -1 {
 				ref, err = store.ConstructReference(ctx, outputWriter.GetOutputPrefixPath(), strconv.Itoa(idx), "outputs.pb")

go/tasks/plugins/array/k8s/management_test.go

@@ -164,6 +164,13 @@ func TestCheckSubTasksState(t *testing.T) {
 		pod.Spec.Containers = append(pod.Spec.Containers, v1.Container{Name: "foo"})
 
 		pod.Status.Phase = v1.PodRunning
+		pod.Status.ContainerStatuses = []v1.ContainerStatus{
+			v1.ContainerStatus{
+				State: v1.ContainerState{
+					Running: &v1.ContainerStateRunning{},
+				},
+			},
+		}
 		_ = fakeKubeClient.Create(ctx, pod)
 		_ = fakeKubeCache.Create(ctx, pod)
 	}

go/tasks/plugins/k8s/pod/container_test.go

@@ -156,6 +156,14 @@ func TestContainerTaskExecutor_GetTaskStatus(t *testing.T) {
 	ctx := context.TODO()
 	t.Run("running", func(t *testing.T) {
 		j.Status.Phase = v1.PodRunning
+		j.Status.ContainerStatuses = []v1.ContainerStatus{
+			{
+				State: v1.ContainerState{
+					Running: &v1.ContainerStateRunning{},
+				},
+			},
+		}
+
 		phaseInfo, err := DefaultPodPlugin.GetTaskPhase(ctx, taskCtx, j)
 		assert.NoError(t, err)
 		assert.Equal(t, pluginsCore.PhaseRunning, phaseInfo.Phase())
@@ -193,6 +201,23 @@ func TestContainerTaskExecutor_GetTaskStatus(t *testing.T) {
 		assert.Equal(t, "Unschedulable", ec)
 	})
 
+	t.Run("successOptimized", func(t *testing.T) {
+		j.Status.Phase = v1.PodRunning
+		j.Status.ContainerStatuses = []v1.ContainerStatus{
+			{
+				State: v1.ContainerState{
+					Terminated: &v1.ContainerStateTerminated{
+						ExitCode: 0,
+					},
+				},
+			},
+		}
+
+		phaseInfo, err := DefaultPodPlugin.GetTaskPhase(ctx, taskCtx, j)
+		assert.NoError(t, err)
+		assert.Equal(t, pluginsCore.PhaseSuccess, phaseInfo.Phase())
+	})
+
 	t.Run("success", func(t *testing.T) {
 		j.Status.Phase = v1.PodSucceeded
 		phaseInfo, err := DefaultPodPlugin.GetTaskPhase(ctx, taskCtx, j)

go/tasks/plugins/k8s/pod/plugin.go

@@ -121,8 +121,10 @@ func (p plugin) BuildResource(ctx context.Context, taskCtx pluginsCore.TaskExecu
 		return nil, err
 	}
 
-	// set primary container name if this is executed as a sidecar
-	if taskTemplate.Type == SidecarTaskType {
+	// set primaryContainerKey annotation if this is a Sidecar task or, as an optimization, if there is only a single
+	// container. this plugin marks the task complete if the primary Container is complete, so if there is only one
+	// container we can mark the task as complete before the Pod has been marked complete.
+	if taskTemplate.Type == SidecarTaskType || len(podSpec.Containers) == 1 {
 		objectMeta.Annotations[flytek8s.PrimaryContainerKey] = primaryContainerName
 	}
 
@@ -187,7 +189,20 @@ func (plugin) GetTaskPhaseWithLogs(ctx context.Context, pluginContext k8s.Plugin
 	default:
 		primaryContainerName, exists := r.GetAnnotations()[flytek8s.PrimaryContainerKey]
 		if !exists {
-			// if the primary container annotation dos not exist, then the task requires all containers
+			// if all of the containers in the Pod are complete, as an optimization, we can declare the task as
+			// succeeded rather than waiting for the Pod to be marked completed.
+			allSuccessfullyTerminated := len(pod.Status.ContainerStatuses) > 0
+			for _, s := range pod.Status.ContainerStatuses {
+				if s.State.Waiting != nil || s.State.Running != nil || (s.State.Terminated != nil && s.State.Terminated.ExitCode != 0) {
+					allSuccessfullyTerminated = false
+				}
+			}
+
+			if allSuccessfullyTerminated {
+				return flytek8s.DemystifySuccess(pod.Status, info)
+			}
+
+			// if the primary container annotation does not exist, then the task requires all containers
 			// to succeed to declare success. therefore, if the pod is not in one of the above states we
 			// fallback to declaring the task as 'running'.
 			phaseInfo = pluginsCore.PhaseInfoRunning(pluginsCore.DefaultPhaseVersion, &info)