Beispiel #1
0
// ListPods obtains a list of pods that match selector.
func (k *KubernetesScheduler) ListPods(selector labels.Selector) ([]api.Pod, error) {
	log.V(2).Infof("List pods for '%v'\n", selector)

	k.RLock()
	defer k.RUnlock()

	var result []api.Pod
	for _, task := range k.runningTasks {
		pod := *(task.Pod)

		var l labels.Set = pod.Labels
		if selector.Matches(l) || selector.Empty() {
			result = append(result, *(task.Pod))
		}
	}

	// TODO(nnielsen): Refactor tasks append for the three lists.
	for _, task := range k.pendingTasks {
		pod := *(task.Pod)

		var l labels.Set = pod.Labels
		if selector.Matches(l) || selector.Empty() {
			result = append(result, *(task.Pod))
		}
	}

	// TODO(nnielsen): Wire up check in finished tasks

	log.V(2).Infof("Returning pods: '%v'\n", result)

	return result, nil
}
// WatchControllers begins watching for new, changed, or deleted controllers.
func (r *Registry) WatchControllers(ctx api.Context, label labels.Selector, field fields.Selector, resourceVersion string) (watch.Interface, error) {
	if !field.Empty() {
		return nil, fmt.Errorf("field selectors are not supported on replication controllers")
	}
	version, err := tools.ParseWatchResourceVersion(resourceVersion, "replicationControllers")
	if err != nil {
		return nil, err
	}
	key := makeControllerListKey(ctx)
	return r.WatchList(key, version, func(obj runtime.Object) bool {
		controller, ok := obj.(*api.ReplicationController)
		if !ok {
			// Must be an error: return true to propagate to upper level.
			return true
		}
		match := label.Matches(labels.Set(controller.Labels))
		if match {
			pods, err := r.pods.ListPods(ctx, labels.Set(controller.Spec.Selector).AsSelector())
			if err != nil {
				glog.Warningf("Error listing pods: %v", err)
				// No object that's useable so drop it on the floor
				return false
			}
			if pods == nil {
				glog.Warningf("Pods list is nil.  This should never happen...")
				// No object that's useable so drop it on the floor
				return false
			}
			controller.Status.Replicas = len(pods.Items)
		}
		return match
	})
}
Beispiel #3
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// TODO: Move this back to scheduler as a helper function that takes a Store,
// rather than a method of StoreToServiceLister.
func (s *StoreToServiceLister) GetPodServices(pod *api.Pod) (services []api.Service, err error) {
	var selector labels.Selector
	var service api.Service

	for _, m := range s.Store.List() {
		service = *m.(*api.Service)
		// consider only services that are in the same namespace as the pod
		if service.Namespace != pod.Namespace {
			continue
		}
		if service.Spec.Selector == nil {
			// services with nil selectors match nothing, not everything.
			continue
		}
		selector = labels.Set(service.Spec.Selector).AsSelector()
		if selector.Matches(labels.Set(pod.Labels)) {
			services = append(services, service)
		}
	}
	if len(services) == 0 {
		err = fmt.Errorf("Could not find service for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
	}

	return
}
Beispiel #4
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// GetPodControllers returns a list of replication controllers managing a pod. Returns an error only if no matching controllers are found.
func (s *StoreToReplicationControllerLister) GetPodControllers(pod *api.Pod) (controllers []api.ReplicationController, err error) {
	var selector labels.Selector
	var rc api.ReplicationController

	if len(pod.Labels) == 0 {
		err = fmt.Errorf("No controllers found for pod %v because it has no labels", pod.Name)
		return
	}

	for _, m := range s.Store.List() {
		rc = *m.(*api.ReplicationController)
		if rc.Namespace != pod.Namespace {
			continue
		}
		labelSet := labels.Set(rc.Spec.Selector)
		selector = labels.Set(rc.Spec.Selector).AsSelector()

		// If an rc with a nil or empty selector creeps in, it should match nothing, not everything.
		if labelSet.AsSelector().Empty() || !selector.Matches(labels.Set(pod.Labels)) {
			continue
		}
		controllers = append(controllers, rc)
	}
	if len(controllers) == 0 {
		err = fmt.Errorf("Could not find controllers for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
	}
	return
}
Beispiel #5
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// ListPods returns []api.Pod matching a query.
func (f FakePodLister) ListPods(s labels.Selector) (selected []api.Pod, err error) {
	for _, pod := range f {
		if s.Matches(labels.Set(pod.Labels)) {
			selected = append(selected, pod)
		}
	}
	return selected, nil
}
// WatchControllers begins watching for new, changed, or deleted controllers.
func (registry *EtcdRegistry) WatchControllers(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
	if !field.Empty() {
		return nil, fmt.Errorf("no field selector implemented for controllers")
	}
	return registry.helper.WatchList("/registry/controllers", resourceVersion, func(obj interface{}) bool {
		return label.Matches(labels.Set(obj.(*api.ReplicationController).Labels))
	})
}
// Watch begins watching for new, changed, or deleted ImageRepositories.
func (s *ImageRepositoryStorage) Watch(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
	return s.registry.WatchImageRepositories(resourceVersion, func(repo *api.ImageRepository) bool {
		fields := labels.Set{
			"ID": repo.ID,
			"DockerImageRepository": repo.DockerImageRepository,
		}
		return label.Matches(labels.Set(repo.Labels)) && field.Matches(fields)
	})
}
// MatchTemplate returns a generic matcher for a given label and field selector.
func MatchTemplate(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		o, ok := obj.(*api.Template)
		if !ok {
			return false, fmt.Errorf("not a pod")
		}
		return label.Matches(labels.Set(o.Labels)), nil
	})
}
Beispiel #9
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// TODO Get rid of the selector because that is confusing because the user might not realize that there has already been
// some selection at the caching stage.  Also, consistency will facilitate code generation.  However, the pkg/client
// is inconsistent too.
func (s *StoreToPodLister) List(selector labels.Selector) (pods []api.Pod, err error) {
	for _, m := range s.Store.List() {
		pod := m.(*api.Pod)
		if selector.Matches(labels.Set(pod.Labels)) {
			pods = append(pods, *pod)
		}
	}
	return pods, nil
}
Beispiel #10
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func (registry *MemoryRegistry) ListPods(selector labels.Selector) ([]api.Pod, error) {
	result := []api.Pod{}
	for _, value := range registry.podData {
		if selector.Matches(labels.Set(value.Labels)) {
			result = append(result, value)
		}
	}
	return result, nil
}
Beispiel #11
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// MatchNamespace returns a generic matcher for a given label and field selector.
func MatchNamespace(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		namespaceObj, ok := obj.(*api.Namespace)
		if !ok {
			return false, fmt.Errorf("not a namespace")
		}
		fields := NamespaceToSelectableFields(namespaceObj)
		return label.Matches(labels.Set(namespaceObj.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #12
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// Matchtoken returns a generic matcher for a given label and field selector.
func Matcher(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		clientObj, ok := obj.(*api.OAuthClientAuthorization)
		if !ok {
			return false, fmt.Errorf("not a client authorization")
		}
		fields := SelectableFields(clientObj)
		return label.Matches(labels.Set(clientObj.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #13
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// MatchPod returns a generic matcher for a given label and field selector.
func MatchPod(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		podObj, ok := obj.(*api.Pod)
		if !ok {
			return false, fmt.Errorf("not a pod")
		}
		fields := PodToSelectableFields(podObj)
		return label.Matches(labels.Set(podObj.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #14
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// Matcher returns a generic matcher for a given label and field selector.
func Matcher(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		scc, ok := obj.(*api.SecurityContextConstraints)
		if !ok {
			return false, fmt.Errorf("not a securitycontextconstraint")
		}
		fields := SelectableFields(scc)
		return label.Matches(labels.Set(scc.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #15
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// Matcher returns a generic matcher for a given label and field selector.
func Matcher(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		sa, ok := obj.(*api.ServiceAccount)
		if !ok {
			return false, fmt.Errorf("not a serviceaccount")
		}
		fields := SelectableFields(sa)
		return label.Matches(labels.Set(sa.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #16
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// MatchPersistentVolumeClaim returns a generic matcher for a given label and field selector.
func MatchPersistentVolumeClaim(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		persistentvolumeclaimObj, ok := obj.(*api.PersistentVolumeClaim)
		if !ok {
			return false, fmt.Errorf("not a persistentvolumeclaim")
		}
		fields := PersistentVolumeClaimToSelectableFields(persistentvolumeclaimObj)
		return label.Matches(labels.Set(persistentvolumeclaimObj.Labels)) && field.Matches(fields), nil
	})
}
// Matchtoken returns a generic matcher for a given label and field selector.
func Matcher(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		tokenObj, ok := obj.(*api.OAuthAccessToken)
		if !ok {
			return false, fmt.Errorf("not a token")
		}
		fields := SelectableFields(tokenObj)
		return label.Matches(labels.Set(tokenObj.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #18
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// MatchResourceQuota returns a generic matcher for a given label and field selector.
func MatchResourceQuota(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		resourcequotaObj, ok := obj.(*api.ResourceQuota)
		if !ok {
			return false, fmt.Errorf("not a resourcequota")
		}
		fields := ResourceQuotaToSelectableFields(resourcequotaObj)
		return label.Matches(labels.Set(resourcequotaObj.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #19
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// Watch begins watching for new, changed, or deleted pods.
func (rs *REST) Watch(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
	return rs.registry.WatchPods(resourceVersion, func(pod *api.Pod) bool {
		fields := labels.Set{
			"ID": pod.ID,
			"DesiredState.Status": string(pod.DesiredState.Status),
			"DesiredState.Host":   pod.DesiredState.Host,
		}
		return label.Matches(labels.Set(pod.Labels)) && field.Matches(fields)
	})
}
Beispiel #20
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// MatchGroup returns a generic matcher for a given label and field selector.
func MatchGroup(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		groupObj, ok := obj.(*api.Group)
		if !ok {
			return false, fmt.Errorf("not a group")
		}
		fields := GroupToSelectableFields(groupObj)
		return label.Matches(labels.Set(groupObj.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #21
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// MatchUser returns a generic matcher for a given label and field selector.
func MatchUser(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		userObj, ok := obj.(*api.User)
		if !ok {
			return false, fmt.Errorf("not a user")
		}
		fields := UserToSelectableFields(userObj)
		return label.Matches(labels.Set(userObj.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #22
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// MatchIdentity returns a generic matcher for a given label and field selector.
func MatchIdentity(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		identityObj, ok := obj.(*api.Identity)
		if !ok {
			return false, fmt.Errorf("not an identity")
		}
		fields := IdentityToSelectableFields(identityObj)
		return label.Matches(labels.Set(identityObj.Labels)) && field.Matches(fields), nil
	})
}
// MatchImageStream returns a generic matcher for a given label and field selector.
func MatchImageStream(label labels.Selector, field fields.Selector) generic.Matcher {
	return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
		ir, ok := obj.(*api.ImageStream)
		if !ok {
			return false, fmt.Errorf("not an ImageStream")
		}
		fields := ImageStreamToSelectableFields(ir)
		return label.Matches(labels.Set(ir.Labels)) && field.Matches(fields), nil
	})
}
Beispiel #24
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func (registry *MockPodRegistry) ListPods(selector labels.Selector) ([]api.Pod, error) {
	if registry.err != nil {
		return registry.pods, registry.err
	}
	var filtered []api.Pod
	for _, pod := range registry.pods {
		if selector.Matches(labels.Set(pod.Labels)) {
			filtered = append(filtered, pod)
		}
	}
	return filtered, nil
}
// List obtains a list of ReplicationControllers that match selector.
func (storage *ControllerRegistryStorage) List(selector labels.Selector) (interface{}, error) {
	result := api.ReplicationControllerList{}
	controllers, err := storage.registry.ListControllers()
	if err == nil {
		for _, controller := range controllers {
			if selector.Matches(labels.Set(controller.Labels)) {
				result.Items = append(result.Items, controller)
			}
		}
	}
	return result, err
}
Beispiel #26
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// Please note that selector is filtering among the pods that have gotten into
// the store; there may have been some filtering that already happened before
// that.
func (s storePodsNamespacer) List(selector labels.Selector) (pods api.PodList, err error) {
	list := api.PodList{}
	for _, m := range s.store.List() {
		pod := m.(*api.Pod)
		if s.namespace == api.NamespaceAll || s.namespace == pod.Namespace {
			if selector.Matches(labels.Set(pod.Labels)) {
				list.Items = append(list.Items, *pod)
			}
		}
	}
	return list, nil
}
Beispiel #27
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// Watch returns ReplicationController events via a watch.Interface.
// It implements apiserver.ResourceWatcher.
func (rs *RegistryStorage) Watch(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
	if !field.Empty() {
		return nil, fmt.Errorf("no field selector implemented for controllers")
	}
	incoming, err := rs.registry.WatchControllers(resourceVersion)
	if err != nil {
		return nil, err
	}
	return watch.Filter(incoming, func(e watch.Event) (watch.Event, bool) {
		repController := e.Object.(*api.ReplicationController)
		return e, label.Matches(labels.Set(repController.Labels))
	}), nil
}
Beispiel #28
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// Please note that selector is filtering among the pods that have gotten into
// the store; there may have been some filtering that already happened before
// that.
//
// TODO: converge on the interface in pkg/client.
func (s *StoreToPodLister) List(selector labels.Selector) (pods []*api.Pod, err error) {
	// TODO: it'd be great to just call
	// s.Pods(api.NamespaceAll).List(selector), however then we'd have to
	// remake the list.Items as a []*api.Pod. So leave this separate for
	// now.
	for _, m := range s.Store.List() {
		pod := m.(*api.Pod)
		if selector.Matches(labels.Set(pod.Labels)) {
			pods = append(pods, pod)
		}
	}
	return pods, nil
}
Beispiel #29
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func (rs *REST) List(selector labels.Selector) (runtime.Object, error) {
	list, err := rs.registry.ListServices()
	if err != nil {
		return nil, err
	}
	var filtered []api.Service
	for _, service := range list.Items {
		if selector.Matches(labels.Set(service.Labels)) {
			filtered = append(filtered, service)
		}
	}
	list.Items = filtered
	return list, err
}
Beispiel #30
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// List obtains a list of ReplicationControllers that match selector.
func (rs *RegistryStorage) List(selector labels.Selector) (interface{}, error) {
	controllers, err := rs.registry.ListControllers()
	if err != nil {
		return nil, err
	}
	filtered := []api.ReplicationController{}
	for _, controller := range controllers.Items {
		if selector.Matches(labels.Set(controller.Labels)) {
			filtered = append(filtered, controller)
		}
	}
	controllers.Items = filtered
	return controllers, err
}