do not use extra labels to list stream CRDs (#2803)

* do not use extra labels to list stream CRDs
* add diff on labels for streams + unit test coverage

pkg/cluster/streams.go

@@ -467,7 +467,9 @@ func (c *Cluster) syncStream(appId string) error {
 	c.setProcessName("syncing stream with applicationId %s", appId)
 	c.logger.Debugf("syncing stream with applicationId %s", appId)
 
-	listOptions := metav1.ListOptions{LabelSelector: c.labelsSet(true).String()}
+	listOptions := metav1.ListOptions{
+		LabelSelector: c.labelsSet(false).String(),
+	}
 	streams, err = c.KubeClient.FabricEventStreams(c.Namespace).List(context.TODO(), listOptions)
 	if err != nil {
 		return fmt.Errorf("could not list of FabricEventStreams for applicationId %s: %v", appId, err)
@@ -492,7 +494,8 @@ func (c *Cluster) syncStream(appId string) error {
 		}
 		if match, reason := c.compareStreams(&stream, desiredStreams); !match {
 			c.logger.Infof("updating event streams with applicationId %s: %s", appId, reason)
-			desiredStreams.ObjectMeta = stream.ObjectMeta
+			// make sure to keep the old name with randomly generated suffix
+			desiredStreams.ObjectMeta.Name = stream.ObjectMeta.Name
 			updatedStream, err := c.updateStreams(desiredStreams)
 			if err != nil {
 				return fmt.Errorf("failed updating event streams %s with applicationId %s: %v", stream.Name, appId, err)
@@ -527,6 +530,11 @@ func (c *Cluster) compareStreams(curEventStreams, newEventStreams *zalandov1.Fab
 		reasons = append(reasons, fmt.Sprintf("new streams annotations do not match: %s", reason))
 	}
 
+	if !reflect.DeepEqual(curEventStreams.ObjectMeta.Labels, newEventStreams.ObjectMeta.Labels) {
+		match = false
+		reasons = append(reasons, "new streams labels do not match the current ones")
+	}
+
 	if changed, reason := sameEventStreams(curEventStreams.Spec.EventStreams, newEventStreams.Spec.EventStreams); !changed {
 		match = false
 		reasons = append(reasons, fmt.Sprintf("new streams EventStreams array does not match : %s", reason))

pkg/cluster/streams_test.go

@@ -490,7 +490,7 @@ func TestGenerateFabricEventStream(t *testing.T) {
 	}
 
 	listOptions := metav1.ListOptions{
-		LabelSelector: cluster.labelsSet(true).String(),
+		LabelSelector: cluster.labelsSet(false).String(),
 	}
 	streams, err := cluster.KubeClient.FabricEventStreams(namespace).List(context.TODO(), listOptions)
 	assert.NoError(t, err)
@@ -529,7 +529,8 @@ func newFabricEventStream(streams []zalandov1.EventStream, annotations map[strin
 }
 
 func TestSyncStreams(t *testing.T) {
-	pg.Name = fmt.Sprintf("%s-2", pg.Name)
+	newClusterName := fmt.Sprintf("%s-2", pg.Name)
+	pg.Name = newClusterName
 	var cluster = New(
 		Config{
 			OpConfig: config.Config{
@@ -560,7 +561,7 @@ func TestSyncStreams(t *testing.T) {
 
 	// check that only one stream remains after sync
 	listOptions := metav1.ListOptions{
-		LabelSelector: cluster.labelsSet(true).String(),
+		LabelSelector: cluster.labelsSet(false).String(),
 	}
 	streams, err := cluster.KubeClient.FabricEventStreams(namespace).List(context.TODO(), listOptions)
 	assert.NoError(t, err)
@@ -812,6 +813,49 @@ func TestDeleteStreams(t *testing.T) {
 	err = cluster.syncStream(appId)
 	assert.NoError(t, err)
 
+	// change specs of streams and patch CRD
+	for i, stream := range pg.Spec.Streams {
+		if stream.ApplicationId == appId {
+			streamTable := stream.Tables["data.bar"]
+			streamTable.EventType = "stream-type-c"
+			stream.Tables["data.bar"] = streamTable
+			stream.BatchSize = k8sutil.UInt32ToPointer(uint32(250))
+			pg.Spec.Streams[i] = stream
+		}
+	}
+
+	// compare stream returned from API with expected stream
+	listOptions := metav1.ListOptions{
+		LabelSelector: cluster.labelsSet(false).String(),
+	}
+	streams := patchPostgresqlStreams(t, cluster, &pg.Spec, listOptions)
+	result := cluster.generateFabricEventStream(appId)
+	if match, _ := cluster.compareStreams(&streams.Items[0], result); !match {
+		t.Errorf("Malformed FabricEventStream after updating manifest, expected %#v, got %#v", streams.Items[0], result)
+	}
+
+	// change teamId and check that stream is updated
+	pg.Spec.TeamID = "new-team"
+	streams = patchPostgresqlStreams(t, cluster, &pg.Spec, listOptions)
+	result = cluster.generateFabricEventStream(appId)
+	if match, _ := cluster.compareStreams(&streams.Items[0], result); !match {
+		t.Errorf("Malformed FabricEventStream after updating teamId, expected %#v, got %#v", streams.Items[0].ObjectMeta.Labels, result.ObjectMeta.Labels)
+	}
+
+	// disable recovery
+	for idx, stream := range pg.Spec.Streams {
+		if stream.ApplicationId == appId {
+			stream.EnableRecovery = util.False()
+			pg.Spec.Streams[idx] = stream
+		}
+	}
+
+	streams = patchPostgresqlStreams(t, cluster, &pg.Spec, listOptions)
+	result = cluster.generateFabricEventStream(appId)
+	if match, _ := cluster.compareStreams(&streams.Items[0], result); !match {
+		t.Errorf("Malformed FabricEventStream after disabling event recovery, expected %#v, got %#v", streams.Items[0], result)
+	}
+
 	// remove streams from manifest
 	pg.Spec.Streams = nil
 	pgUpdated, err := cluster.KubeClient.Postgresqls(namespace).Update(
@@ -822,10 +866,7 @@ func TestDeleteStreams(t *testing.T) {
 	cluster.cleanupRemovedStreams(appIds)
 
 	// check that streams have been deleted
-	listOptions := metav1.ListOptions{
-		LabelSelector: cluster.labelsSet(true).String(),
-	}
-	streams, err := cluster.KubeClient.FabricEventStreams(namespace).List(context.TODO(), listOptions)
+	streams, err = cluster.KubeClient.FabricEventStreams(namespace).List(context.TODO(), listOptions)
 	assert.NoError(t, err)
 	assert.Equalf(t, 0, len(streams.Items), "unexpected number of streams found: got %d, but expected none", len(streams.Items))