func TestStatusUpdatesWithoutReplicasChange(t *testing.T) {
// Setup a fake server to listen for requests, and run the rc manager in steady state
fakeHandler := util.FakeHandler{
StatusCode: 200,
ResponseBody: "",
}
testServer := httptest.NewServer(&fakeHandler)
defer testServer.Close()
client := client.NewOrDie(&client.Config{Host: testServer.URL, Version: testapi.Version()})
manager := NewReplicationManager(client, BurstReplicas)
manager.podStoreSynced = alwaysReady
// Steady state for the replication controller, no Status.Replicas updates expected
activePods := 5
rc := newReplicationController(activePods)
manager.controllerStore.Store.Add(rc)
rc.Status = api.ReplicationControllerStatus{Replicas: activePods}
newPodList(manager.podStore.Store, activePods, api.PodRunning, rc)
fakePodControl := FakePodControl{}
manager.podControl = &fakePodControl
manager.syncReplicationController(getKey(rc, t))
validateSyncReplication(t, &fakePodControl, 0, 0)
if fakeHandler.RequestReceived != nil {
t.Errorf("Unexpected update when pods and rcs are in a steady state")
}
// This response body is just so we don't err out decoding the http response, all
// we care about is the request body sent below.
response := runtime.EncodeOrDie(testapi.Codec(), &api.ReplicationController{})
fakeHandler.ResponseBody = response
rc.Generation = rc.Generation + 1
manager.syncReplicationController(getKey(rc, t))
rc.Status.ObservedGeneration = rc.Generation
updatedRc := runtime.EncodeOrDie(testapi.Codec(), rc)
fakeHandler.ValidateRequest(t, testapi.ResourcePath(replicationControllerResourceName(), rc.Namespace, rc.Name), "PUT", &updatedRc)
}
func TestControllerUpdateReplicas(t *testing.T) {
// This is a happy server just to record the PUT request we expect for status.Replicas
fakeHandler := util.FakeHandler{
StatusCode: 200,
ResponseBody: "",
}
testServer := httptest.NewServer(&fakeHandler)
defer testServer.Close()
client := client.NewOrDie(&client.Config{Host: testServer.URL, Version: testapi.Version()})
manager := NewReplicationManager(client, BurstReplicas)
manager.podStoreSynced = alwaysReady
// Insufficient number of pods in the system, and Status.Replicas is wrong;
// Status.Replica should update to match number of pods in system, 1 new pod should be created.
rc := newReplicationController(5)
manager.controllerStore.Store.Add(rc)
rc.Status = api.ReplicationControllerStatus{Replicas: 2, ObservedGeneration: 0}
rc.Generation = 1
newPodList(manager.podStore.Store, 4, api.PodRunning, rc)
// This response body is just so we don't err out decoding the http response
response := runtime.EncodeOrDie(testapi.Codec(), &api.ReplicationController{})
fakeHandler.ResponseBody = response
fakePodControl := FakePodControl{}
manager.podControl = &fakePodControl
manager.syncReplicationController(getKey(rc, t))
// 1. Status.Replicas should go up from 2->4 even though we created 5-4=1 pod.
// 2. Every update to the status should include the Generation of the spec.
rc.Status = api.ReplicationControllerStatus{Replicas: 4, ObservedGeneration: 1}
decRc := runtime.EncodeOrDie(testapi.Codec(), rc)
fakeHandler.ValidateRequest(t, testapi.ResourcePath(replicationControllerResourceName(), rc.Namespace, rc.Name), "PUT", &decRc)
validateSyncReplication(t, &fakePodControl, 1, 0)
}