Golang controller.NewPodControllerRefManager函数代码示例

// syncReplicationController will sync the rc with the given key if it has had its expectations fulfilled, meaning
// it did not expect to see any more of its pods created or deleted. This function is not meant to be invoked
// concurrently with the same key.
func (rm *ReplicationManager) syncReplicationController(key string) error {
	trace := util.NewTrace("syncReplicationController: " + key)
	defer trace.LogIfLong(250 * time.Millisecond)

	startTime := time.Now()
	defer func() {
		glog.V(4).Infof("Finished syncing controller %q (%v)", key, time.Now().Sub(startTime))
	}()

	if !rm.podStoreSynced() {
		// Sleep so we give the pod reflector goroutine a chance to run.
		time.Sleep(PodStoreSyncedPollPeriod)
		glog.Infof("Waiting for pods controller to sync, requeuing rc %v", key)
		rm.queue.Add(key)
		return nil
	}

	obj, exists, err := rm.rcStore.Indexer.GetByKey(key)
	if !exists {
		glog.Infof("Replication Controller has been deleted %v", key)
		rm.expectations.DeleteExpectations(key)
		return nil
	}
	if err != nil {
		return err
	}
	rc := *obj.(*api.ReplicationController)

	// Check the expectations of the rc before counting active pods, otherwise a new pod can sneak in
	// and update the expectations after we've retrieved active pods from the store. If a new pod enters
	// the store after we've checked the expectation, the rc sync is just deferred till the next relist.
	rcKey, err := controller.KeyFunc(&rc)
	if err != nil {
		glog.Errorf("Couldn't get key for replication controller %#v: %v", rc, err)
		return err
	}
	trace.Step("ReplicationController restored")
	rcNeedsSync := rm.expectations.SatisfiedExpectations(rcKey)
	trace.Step("Expectations restored")

	// NOTE: filteredPods are pointing to objects from cache - if you need to
	// modify them, you need to copy it first.
	// TODO: Do the List and Filter in a single pass, or use an index.
	var filteredPods []*api.Pod
	if rm.garbageCollectorEnabled {
		// list all pods to include the pods that don't match the rc's selector
		// anymore but has the stale controller ref.
		pods, err := rm.podStore.Pods(rc.Namespace).List(labels.Everything())
		if err != nil {
			glog.Errorf("Error getting pods for rc %q: %v", key, err)
			rm.queue.Add(key)
			return err
		}
		cm := controller.NewPodControllerRefManager(rm.podControl, rc.ObjectMeta, labels.Set(rc.Spec.Selector).AsSelectorPreValidated(), getRCKind())
		matchesAndControlled, matchesNeedsController, controlledDoesNotMatch := cm.Classify(pods)
		for _, pod := range matchesNeedsController {
			err := cm.AdoptPod(pod)
			// continue to next pod if adoption fails.
			if err != nil {
				// If the pod no longer exists, don't even log the error.
				if !errors.IsNotFound(err) {
					utilruntime.HandleError(err)
				}
			} else {
				matchesAndControlled = append(matchesAndControlled, pod)
			}
		}
		filteredPods = matchesAndControlled
		// remove the controllerRef for the pods that no longer have matching labels
		var errlist []error
		for _, pod := range controlledDoesNotMatch {
			err := cm.ReleasePod(pod)
			if err != nil {
				errlist = append(errlist, err)
			}
		}
		if len(errlist) != 0 {
			aggregate := utilerrors.NewAggregate(errlist)
			// push the RC into work queue again. We need to try to free the
			// pods again otherwise they will stuck with the stale
			// controllerRef.
			rm.queue.Add(key)
			return aggregate
		}
	} else {
		pods, err := rm.podStore.Pods(rc.Namespace).List(labels.Set(rc.Spec.Selector).AsSelectorPreValidated())
		if err != nil {
			glog.Errorf("Error getting pods for rc %q: %v", key, err)
			rm.queue.Add(key)
			return err
		}
		filteredPods = controller.FilterActivePods(pods)
	}

	var manageReplicasErr error
	if rcNeedsSync && rc.DeletionTimestamp == nil {
		manageReplicasErr = rm.manageReplicas(filteredPods, &rc)
//.........这里部分代码省略.........

// syncReplicaSet will sync the ReplicaSet with the given key if it has had its expectations fulfilled,
// meaning it did not expect to see any more of its pods created or deleted. This function is not meant to be
// invoked concurrently with the same key.
func (rsc *ReplicaSetController) syncReplicaSet(key string) error {
	startTime := time.Now()
	defer func() {
		glog.V(4).Infof("Finished syncing replica set %q (%v)", key, time.Now().Sub(startTime))
	}()

	if !rsc.podStoreSynced() {
		// Sleep so we give the pod reflector goroutine a chance to run.
		time.Sleep(PodStoreSyncedPollPeriod)
		glog.Infof("Waiting for pods controller to sync, requeuing ReplicaSet %v", key)
		rsc.queue.Add(key)
		return nil
	}

	obj, exists, err := rsc.rsStore.Store.GetByKey(key)
	if !exists {
		glog.Infof("ReplicaSet has been deleted %v", key)
		rsc.expectations.DeleteExpectations(key)
		return nil
	}
	if err != nil {
		glog.Infof("Unable to retrieve ReplicaSet %v from store: %v", key, err)
		rsc.queue.Add(key)
		return err
	}
	rs := *obj.(*extensions.ReplicaSet)

	// Check the expectations of the ReplicaSet before counting active pods, otherwise a new pod can sneak
	// in and update the expectations after we've retrieved active pods from the store. If a new pod enters
	// the store after we've checked the expectation, the ReplicaSet sync is just deferred till the next
	// relist.
	rsKey, err := controller.KeyFunc(&rs)
	if err != nil {
		glog.Errorf("Couldn't get key for ReplicaSet %#v: %v", rs, err)
		return err
	}
	rsNeedsSync := rsc.expectations.SatisfiedExpectations(rsKey)
	selector, err := unversioned.LabelSelectorAsSelector(rs.Spec.Selector)
	if err != nil {
		glog.Errorf("Error converting pod selector to selector: %v", err)
		return err
	}

	// TODO: Do the List and Filter in a single pass, or use an index.
	var filteredPods []*api.Pod
	if rsc.garbageCollectorEnabled {
		// list all pods to include the pods that don't match the rs`s selector
		// anymore but has the stale controller ref.
		podList, err := rsc.podStore.Pods(rs.Namespace).List(labels.Everything())
		if err != nil {
			glog.Errorf("Error getting pods for rs %q: %v", key, err)
			rsc.queue.Add(key)
			return err
		}
		cm := controller.NewPodControllerRefManager(rsc.podControl, rs.ObjectMeta, selector, getRSKind())
		matchesAndControlled, matchesNeedsController, controlledDoesNotMatch := cm.Classify(podList.Items)
		for _, pod := range matchesNeedsController {
			err := cm.AdoptPod(pod)
			// continue to next pod if adoption fails.
			if err != nil {
				// If the pod no longer exists, don't even log the error.
				if !errors.IsNotFound(err) {
					utilruntime.HandleError(err)
				}
			} else {
				matchesAndControlled = append(matchesAndControlled, pod)
			}
		}
		filteredPods = matchesAndControlled
		// remove the controllerRef for the pods that no longer have matching labels
		var errlist []error
		for _, pod := range controlledDoesNotMatch {
			err := cm.ReleasePod(pod)
			if err != nil {
				errlist = append(errlist, err)
			}
		}
		if len(errlist) != 0 {
			aggregate := utilerrors.NewAggregate(errlist)
			// push the RS into work queue again. We need to try to free the
			// pods again otherwise they will stuck with the stale
			// controllerRef.
			rsc.queue.Add(key)
			return aggregate
		}
	} else {
		podList, err := rsc.podStore.Pods(rs.Namespace).List(selector)
		if err != nil {
			glog.Errorf("Error getting pods for rs %q: %v", key, err)
			rsc.queue.Add(key)
			return err
		}
		filteredPods = controller.FilterActivePods(podList.Items)
	}

	if rsNeedsSync && rs.DeletionTimestamp == nil {
		rsc.manageReplicas(filteredPods, &rs)
//.........这里部分代码省略.........

// syncReplicaSet will sync the ReplicaSet with the given key if it has had its expectations fulfilled,
// meaning it did not expect to see any more of its pods created or deleted. This function is not meant to be
// invoked concurrently with the same key.
func (rsc *ReplicaSetController) syncReplicaSet(key string) error {
	startTime := time.Now()
	defer func() {
		glog.V(4).Infof("Finished syncing replica set %q (%v)", key, time.Now().Sub(startTime))
	}()

	obj, exists, err := rsc.rsLister.Indexer.GetByKey(key)
	if !exists {
		glog.V(4).Infof("ReplicaSet has been deleted %v", key)
		rsc.expectations.DeleteExpectations(key)
		return nil
	}
	if err != nil {
		return err
	}
	rs := *obj.(*extensions.ReplicaSet)

	rsNeedsSync := rsc.expectations.SatisfiedExpectations(key)
	selector, err := metav1.LabelSelectorAsSelector(rs.Spec.Selector)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("Error converting pod selector to selector: %v", err))
		return nil
	}

	// NOTE: filteredPods are pointing to objects from cache - if you need to
	// modify them, you need to copy it first.
	// TODO: Do the List and Filter in a single pass, or use an index.
	var filteredPods []*v1.Pod
	if rsc.garbageCollectorEnabled {
		// list all pods to include the pods that don't match the rs`s selector
		// anymore but has the stale controller ref.
		pods, err := rsc.podLister.Pods(rs.Namespace).List(labels.Everything())
		if err != nil {
			return err
		}
		cm := controller.NewPodControllerRefManager(rsc.podControl, rs.ObjectMeta, selector, getRSKind())
		matchesAndControlled, matchesNeedsController, controlledDoesNotMatch := cm.Classify(pods)
		// Adopt pods only if this replica set is not going to be deleted.
		if rs.DeletionTimestamp == nil {
			for _, pod := range matchesNeedsController {
				err := cm.AdoptPod(pod)
				// continue to next pod if adoption fails.
				if err != nil {
					// If the pod no longer exists, don't even log the error.
					if !errors.IsNotFound(err) {
						utilruntime.HandleError(err)
					}
				} else {
					matchesAndControlled = append(matchesAndControlled, pod)
				}
			}
		}
		filteredPods = matchesAndControlled
		// remove the controllerRef for the pods that no longer have matching labels
		var errlist []error
		for _, pod := range controlledDoesNotMatch {
			err := cm.ReleasePod(pod)
			if err != nil {
				errlist = append(errlist, err)
			}
		}
		if len(errlist) != 0 {
			aggregate := utilerrors.NewAggregate(errlist)
			// push the RS into work queue again. We need to try to free the
			// pods again otherwise they will stuck with the stale
			// controllerRef.
			return aggregate
		}
	} else {
		pods, err := rsc.podLister.Pods(rs.Namespace).List(selector)
		if err != nil {
			return err
		}
		filteredPods = controller.FilterActivePods(pods)
	}

	var manageReplicasErr error
	if rsNeedsSync && rs.DeletionTimestamp == nil {
		manageReplicasErr = rsc.manageReplicas(filteredPods, &rs)
	}

	newStatus := calculateStatus(rs, filteredPods, manageReplicasErr)

	// Always updates status as pods come up or die.
	if err := updateReplicaSetStatus(rsc.kubeClient.Extensions().ReplicaSets(rs.Namespace), rs, newStatus); err != nil {
		// Multiple things could lead to this update failing. Requeuing the replica set ensures
		// Returning an error causes a requeue without forcing a hotloop
		return err
	}
	return manageReplicasErr
}

// syncReplicaSet will sync the ReplicaSet with the given key if it has had its expectations fulfilled,
// meaning it did not expect to see any more of its pods created or deleted. This function is not meant to be
// invoked concurrently with the same key.
func (rsc *ReplicaSetController) syncReplicaSet(key string) error {
	startTime := time.Now()
	defer func() {
		glog.V(4).Infof("Finished syncing replica set %q (%v)", key, time.Now().Sub(startTime))
	}()

	obj, exists, err := rsc.rsLister.Indexer.GetByKey(key)
	if !exists {
		glog.V(4).Infof("ReplicaSet has been deleted %v", key)
		rsc.expectations.DeleteExpectations(key)
		return nil
	}
	if err != nil {
		return err
	}
	rs := *obj.(*extensions.ReplicaSet)

	// Check the expectations of the ReplicaSet before counting active pods, otherwise a new pod can sneak
	// in and update the expectations after we've retrieved active pods from the store. If a new pod enters
	// the store after we've checked the expectation, the ReplicaSet sync is just deferred till the next
	// relist.
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("Couldn't get key for ReplicaSet %#v: %v", rs, err))
		// Explicitly return nil to avoid re-enqueue bad key
		return nil
	}
	rsNeedsSync := rsc.expectations.SatisfiedExpectations(key)
	selector, err := unversioned.LabelSelectorAsSelector(rs.Spec.Selector)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("Error converting pod selector to selector: %v", err))
		return nil
	}

	// NOTE: filteredPods are pointing to objects from cache - if you need to
	// modify them, you need to copy it first.
	// TODO: Do the List and Filter in a single pass, or use an index.
	var filteredPods []*api.Pod
	if rsc.garbageCollectorEnabled {
		// list all pods to include the pods that don't match the rs`s selector
		// anymore but has the stale controller ref.
		pods, err := rsc.podLister.Pods(rs.Namespace).List(labels.Everything())
		if err != nil {
			return err
		}
		cm := controller.NewPodControllerRefManager(rsc.podControl, rs.ObjectMeta, selector, getRSKind())
		matchesAndControlled, matchesNeedsController, controlledDoesNotMatch := cm.Classify(pods)
		for _, pod := range matchesNeedsController {
			err := cm.AdoptPod(pod)
			// continue to next pod if adoption fails.
			if err != nil {
				// If the pod no longer exists, don't even log the error.
				if !errors.IsNotFound(err) {
					utilruntime.HandleError(err)
				}
			} else {
				matchesAndControlled = append(matchesAndControlled, pod)
			}
		}
		filteredPods = matchesAndControlled
		// remove the controllerRef for the pods that no longer have matching labels
		var errlist []error
		for _, pod := range controlledDoesNotMatch {
			err := cm.ReleasePod(pod)
			if err != nil {
				errlist = append(errlist, err)
			}
		}
		if len(errlist) != 0 {
			aggregate := utilerrors.NewAggregate(errlist)
			// push the RS into work queue again. We need to try to free the
			// pods again otherwise they will stuck with the stale
			// controllerRef.
			return aggregate
		}
	} else {
		pods, err := rsc.podLister.Pods(rs.Namespace).List(selector)
		if err != nil {
			return err
		}
		filteredPods = controller.FilterActivePods(pods)
	}

	var manageReplicasErr error
	if rsNeedsSync && rs.DeletionTimestamp == nil {
		manageReplicasErr = rsc.manageReplicas(filteredPods, &rs)
	}

	// Count the number of pods that have labels matching the labels of the pod
	// template of the replicaSet, the matching pods may have more labels than
	// are in the template. Because the label of podTemplateSpec is a superset
	// of the selector of the replicaset, so the possible matching pods must be
	// part of the filteredPods.
	fullyLabeledReplicasCount := 0
	readyReplicasCount := 0
	availableReplicasCount := 0
	templateLabel := labels.Set(rs.Spec.Template.Labels).AsSelectorPreValidated()
	for _, pod := range filteredPods {
//.........这里部分代码省略.........

// syncReplicationController will sync the rc with the given key if it has had its expectations fulfilled, meaning
// it did not expect to see any more of its pods created or deleted. This function is not meant to be invoked
// concurrently with the same key.
func (rm *ReplicationManager) syncReplicationController(key string) error {
	trace := util.NewTrace("syncReplicationController: " + key)
	defer trace.LogIfLong(250 * time.Millisecond)

	startTime := time.Now()
	defer func() {
		glog.V(4).Infof("Finished syncing controller %q (%v)", key, time.Now().Sub(startTime))
	}()

	if !rm.podStoreSynced() {
		// Sleep so we give the pod reflector goroutine a chance to run.
		time.Sleep(PodStoreSyncedPollPeriod)
		glog.Infof("Waiting for pods controller to sync, requeuing rc %v", key)
		rm.queue.Add(key)
		return nil
	}

	obj, exists, err := rm.rcStore.Indexer.GetByKey(key)
	if !exists {
		glog.Infof("Replication Controller has been deleted %v", key)
		rm.expectations.DeleteExpectations(key)
		return nil
	}
	if err != nil {
		return err
	}
	rc := *obj.(*v1.ReplicationController)

	trace.Step("ReplicationController restored")
	rcNeedsSync := rm.expectations.SatisfiedExpectations(key)
	trace.Step("Expectations restored")

	// NOTE: filteredPods are pointing to objects from cache - if you need to
	// modify them, you need to copy it first.
	// TODO: Do the List and Filter in a single pass, or use an index.
	var filteredPods []*v1.Pod
	if rm.garbageCollectorEnabled {
		// list all pods to include the pods that don't match the rc's selector
		// anymore but has the stale controller ref.
		pods, err := rm.podStore.Pods(rc.Namespace).List(labels.Everything())
		if err != nil {
			glog.Errorf("Error getting pods for rc %q: %v", key, err)
			rm.queue.Add(key)
			return err
		}
		cm := controller.NewPodControllerRefManager(rm.podControl, rc.ObjectMeta, labels.Set(rc.Spec.Selector).AsSelectorPreValidated(), getRCKind())
		matchesAndControlled, matchesNeedsController, controlledDoesNotMatch := cm.Classify(pods)
		// Adopt pods only if this replication controller is not going to be deleted.
		if rc.DeletionTimestamp == nil {
			for _, pod := range matchesNeedsController {
				err := cm.AdoptPod(pod)
				// continue to next pod if adoption fails.
				if err != nil {
					// If the pod no longer exists, don't even log the error.
					if !errors.IsNotFound(err) {
						utilruntime.HandleError(err)
					}
				} else {
					matchesAndControlled = append(matchesAndControlled, pod)
				}
			}
		}
		filteredPods = matchesAndControlled
		// remove the controllerRef for the pods that no longer have matching labels
		var errlist []error
		for _, pod := range controlledDoesNotMatch {
			err := cm.ReleasePod(pod)
			if err != nil {
				errlist = append(errlist, err)
			}
		}
		if len(errlist) != 0 {
			aggregate := utilerrors.NewAggregate(errlist)
			// push the RC into work queue again. We need to try to free the
			// pods again otherwise they will stuck with the stale
			// controllerRef.
			rm.queue.Add(key)
			return aggregate
		}
	} else {
		pods, err := rm.podStore.Pods(rc.Namespace).List(labels.Set(rc.Spec.Selector).AsSelectorPreValidated())
		if err != nil {
			glog.Errorf("Error getting pods for rc %q: %v", key, err)
			rm.queue.Add(key)
			return err
		}
		filteredPods = controller.FilterActivePods(pods)
	}

	var manageReplicasErr error
	if rcNeedsSync && rc.DeletionTimestamp == nil {
		manageReplicasErr = rm.manageReplicas(filteredPods, &rc)
	}
	trace.Step("manageReplicas done")

	newStatus := calculateStatus(rc, filteredPods, manageReplicasErr)

//.........这里部分代码省略.........