Fixes #3864, Fix pod topology for jobs when cronJobs not exist.

probe/kubernetes/reporter.go

@@ -661,18 +661,18 @@ func (r *Reporter) podTopology(services []Service, deployments []Deployment, dae
 				report.MakeCronJobNodeID(cronJob.UID()),
 			))
 		}
-		for _, job := range jobs {
-			selector, err := job.Selector()
-			if err != nil {
-				return pods, err
-			}
-			selectors = append(selectors, match(
-				job.Namespace(),
-				selector,
-				report.Job,
-				report.MakeJobNodeID(job.UID()),
-			))
+	}
+	for _, job := range jobs {
+		selector, err := job.Selector()
+		if err != nil {
+			return pods, err
 		}
+		selectors = append(selectors, match(
+			job.Namespace(),
+			selector,
+			report.Job,
+			report.MakeJobNodeID(job.UID()),
+		))
 	}
 
 	err := r.client.WalkPods(func(p Pod) error {

probe/kubernetes/reporter_test.go

@@ -8,12 +8,14 @@ import (
 	"testing"
 
 	appsv1 "k8s.io/api/apps/v1"
+	batchv1 "k8s.io/api/batch/v1"
 	apiv1 "k8s.io/api/core/v1"
 	k8smeta "k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/types"
 
+	"github.com/bmizerany/assert"
 	"github.com/weaveworks/scope/common/xfer"
 	"github.com/weaveworks/scope/probe/controls"
 	"github.com/weaveworks/scope/probe/docker"
@@ -26,6 +28,7 @@ var (
 	nodeName    = "nodename"
 	pod1UID     = "a1b2c3d4e5"
 	pod2UID     = "f6g7h8i9j0"
+	job1UID     = "abcdef1234"
 	serviceUID  = "service1234"
 	podTypeMeta = metav1.TypeMeta{
 		Kind:       "Pod",
@@ -72,6 +75,25 @@ var (
 			NodeName: nodeName,
 		},
 	}
+	apiJob1 = batchv1.Job{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       "Job",
+			APIVersion: "v1",
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name:              "pong",
+			UID:               types.UID(job1UID),
+			Namespace:         "ping",
+			CreationTimestamp: metav1.Now(),
+			Labels:            map[string]string{"ponger": "true"},
+		},
+		Spec: batchv1.JobSpec{
+			Selector: &metav1.LabelSelector{
+				MatchLabels: map[string]string{"ponger": "true"},
+			},
+		},
+		Status: batchv1.JobStatus{},
+	}
 	apiService1 = apiv1.Service{
 		TypeMeta: metav1.TypeMeta{
 			Kind:       "Service",
@@ -102,6 +124,7 @@ var (
 	}
 	pod1     = kubernetes.NewPod(&apiPod1)
 	pod2     = kubernetes.NewPod(&apiPod2)
+	job1     = kubernetes.NewJob(&apiJob1)
 	service1 = kubernetes.NewService(&apiService1)
 )
 
@@ -109,6 +132,7 @@ func newMockClient() *mockClient {
 	return &mockClient{
 		pods:     []kubernetes.Pod{pod1, pod2},
 		services: []kubernetes.Service{service1},
+		jobs:     []kubernetes.Job{job1},
 		logs:     map[string]io.ReadCloser{},
 	}
 }
@@ -116,6 +140,7 @@ func newMockClient() *mockClient {
 type mockClient struct {
 	pods        []kubernetes.Pod
 	services    []kubernetes.Service
+	jobs        []kubernetes.Job
 	deployments []kubernetes.Deployment
 	logs        map[string]io.ReadCloser
 }
@@ -173,6 +198,11 @@ func (c *mockClient) WalkVolumeSnapshotData(f func(kubernetes.VolumeSnapshotData
 	return nil
 }
 func (c *mockClient) WalkJobs(f func(kubernetes.Job) error) error {
+	for _, job := range c.jobs {
+		if err := f(job); err != nil {
+			return err
+		}
+	}
 	return nil
 }
 func (*mockClient) WatchPods(func(kubernetes.Event, kubernetes.Pod)) {}
@@ -229,6 +259,7 @@ func (c mockPipeClient) PipeClose(appID, id string) error {
 func TestReporter(t *testing.T) {
 	pod1ID := report.MakePodNodeID(pod1UID)
 	pod2ID := report.MakePodNodeID(pod2UID)
+	job1ID := report.MakeJobNodeID(job1UID)
 	serviceID := report.MakeServiceNodeID(serviceUID)
 	hr := controls.NewDefaultHandlerRegistry()
 	rpt, _ := kubernetes.NewReporter(newMockClient(), nil, "probe-id", "foo", nil, hr, nodeName).Report()
@@ -237,14 +268,15 @@ func TestReporter(t *testing.T) {
 	for _, pod := range []struct {
 		id            string
 		parentService string
+		parentJob     string
 		latest        map[string]string
 	}{
-		{pod1ID, serviceID, map[string]string{
+		{pod1ID, serviceID, job1ID, map[string]string{
 			kubernetes.Name:      "pong-a",
 			kubernetes.Namespace: "ping",
 			kubernetes.Created:   pod1.Created(),
 		}},
-		{pod2ID, serviceID, map[string]string{
+		{pod2ID, serviceID, job1ID, map[string]string{
 			kubernetes.Name:      "pong-b",
 			kubernetes.Namespace: "ping",
 			kubernetes.Created:   pod2.Created(),
@@ -259,12 +291,31 @@ func TestReporter(t *testing.T) {
 			t.Errorf("Expected pod %s to have parent service %q, got %q", pod.id, pod.parentService, parents)
 		}
 
+		if parents, ok := node.Parents.Lookup(report.Job); !ok || !parents.Contains(pod.parentJob) {
+			t.Errorf("Expected pod %s to have parent service %q, got %q", pod.id, pod.parentJob, parents)
+		}
+
 		for k, want := range pod.latest {
 			if have, ok := node.Latest.Lookup(k); !ok || have != want {
 				t.Errorf("Expected pod %s latest %q: %q, got %q", pod.id, k, want, have)
 			}
 		}
 	}
+	// Reporter should have added a job
+	{
+		node, ok := rpt.Job.Nodes[job1ID]
+		assert.Equal(t, ok, true)
+		jobLatest := map[string]string{
+			kubernetes.Name:      "pong",
+			kubernetes.Namespace: "ping",
+			kubernetes.Created:   job1.Created(),
+		}
+		for k, want := range jobLatest {
+			hava, ok := node.Latest.Lookup(k)
+			assert.Equal(t, ok, true)
+			assert.Equal(t, want, hava)
+		}
+	}
 
 	// Reporter should have added a service
 	{