Exemplo n.º 1
0
// getMyPodsFromCache returns a full list of pods that belong to this resource.
// It is important that cachedPods include ALL pods from the namespace of this resource (but they can also include pods from other namespaces).
func (self *ResourceSelector) getMyPodsFromCache(cachedPods []api.Pod) ([]api.Pod, error) {
	// make sure we have the full list of pods. you have to make sure the cache has pod list for all namespaces!
	if cachedPods == nil {
		return nil, fmt.Errorf(`GetMyPodsFromCache: pods were not available in cache. Required for resource type: "%s"`, self.ResourceType)
	}

	// now decide whether to match by ResourceSelector or by ResourceLabelSelector
	if self.LabelSelector != nil {
		return common.FilterNamespacedPodsByLabelSelector(cachedPods, self.Namespace, self.LabelSelector), nil

	} else if self.Selector != nil {
		return common.FilterNamespacedPodsBySelector(cachedPods, self.Namespace, self.Selector), nil
	} else {
		return nil, fmt.Errorf(`GetMyPodsFromCache: did not find any resource selector for resource type: "%s"`, self.ResourceType)
	}
}
Exemplo n.º 2
0
// Returns array of api pods targeting daemon set with given name.
func getRawDaemonSetPods(client k8sClient.Interface, daemonSetName, namespace string) (
	[]api.Pod, error) {

	daemonSet, err := client.Extensions().DaemonSets(namespace).Get(daemonSetName)
	if err != nil {
		return nil, err
	}

	channels := &common.ResourceChannels{
		PodList: common.GetPodListChannel(client, common.NewSameNamespaceQuery(namespace), 1),
	}

	podList := <-channels.PodList.List
	if err := <-channels.PodList.Error; err != nil {
		return nil, err
	}

	matchingPods := common.FilterNamespacedPodsByLabelSelector(podList.Items,
		daemonSet.ObjectMeta.Namespace, daemonSet.Spec.Selector)
	return matchingPods, nil
}
Exemplo n.º 3
0
// Returns array of api pods targeting pet set with given name.
func getRawStatefulSetPods(client *k8sClient.Clientset, statefulSetName, namespace string) (
	[]api.Pod, error) {

	statefulSet, err := client.Apps().StatefulSets(namespace).Get(statefulSetName)
	if err != nil {
		return nil, err
	}

	channels := &common.ResourceChannels{
		PodList: common.GetPodListChannel(client, common.NewSameNamespaceQuery(namespace), 1),
	}

	podList := <-channels.PodList.List
	if err := <-channels.PodList.Error; err != nil {
		return nil, err
	}

	matchingPods := common.FilterNamespacedPodsByLabelSelector(podList.Items,
		statefulSet.ObjectMeta.Namespace, statefulSet.Spec.Selector)
	return matchingPods, nil
}
Exemplo n.º 4
0
// CreateDaemonSetList returns a list of all Daemon Set model objects in the cluster, based on all
// Kubernetes Daemon Set API objects.
func CreateDaemonSetList(daemonSets []extensions.DaemonSet, pods []api.Pod,
	events []api.Event, dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) *DaemonSetList {

	daemonSetList := &DaemonSetList{
		DaemonSets: make([]DaemonSet, 0),
		ListMeta:   common.ListMeta{TotalItems: len(daemonSets)},
	}

	cachedResources := &dataselect.CachedResources{
		Pods: pods,
	}
	replicationControllerCells, metricPromises := dataselect.GenericDataSelectWithMetrics(daemonset.ToCells(daemonSets), dsQuery, cachedResources, heapsterClient)
	daemonSets = daemonset.FromCells(replicationControllerCells)

	for _, daemonSet := range daemonSets {
		matchingPods := common.FilterNamespacedPodsByLabelSelector(pods, daemonSet.Namespace,
			daemonSet.Spec.Selector)
		podInfo := common.GetPodInfo(daemonSet.Status.CurrentNumberScheduled,
			daemonSet.Status.DesiredNumberScheduled, matchingPods)
		podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)

		daemonSetList.DaemonSets = append(daemonSetList.DaemonSets,
			DaemonSet{
				ObjectMeta:      common.NewObjectMeta(daemonSet.ObjectMeta),
				TypeMeta:        common.NewTypeMeta(common.ResourceKindDaemonSet),
				Pods:            podInfo,
				ContainerImages: common.GetContainerImages(&daemonSet.Spec.Template.Spec),
			})
	}

	cumulativeMetrics, err := metricPromises.GetMetrics()
	daemonSetList.CumulativeMetrics = cumulativeMetrics
	if err != nil {
		daemonSetList.CumulativeMetrics = make([]metric.Metric, 0)
	}

	return daemonSetList
}