mirror of
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184 lines
7.2 KiB
Go
184 lines
7.2 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package statefulset
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import (
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"context"
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"fmt"
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appsv1 "k8s.io/api/apps/v1"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/wait"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/kubectl/pkg/util/podutils"
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"k8s.io/kubernetes/test/e2e/framework"
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)
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// WaitForRunning waits for numPodsRunning in ss to be Running and for the first
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// numPodsReady ordinals to be Ready.
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func WaitForRunning(ctx context.Context, c clientset.Interface, numPodsRunning, numPodsReady int32, ss *appsv1.StatefulSet) {
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pollErr := wait.PollImmediateWithContext(ctx, StatefulSetPoll, StatefulSetTimeout,
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func(ctx context.Context) (bool, error) {
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podList := GetPodList(ctx, c, ss)
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SortStatefulPods(podList)
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if int32(len(podList.Items)) < numPodsRunning {
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framework.Logf("Found %d stateful pods, waiting for %d", len(podList.Items), numPodsRunning)
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return false, nil
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}
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if int32(len(podList.Items)) > numPodsRunning {
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return false, fmt.Errorf("too many pods scheduled, expected %d got %d", numPodsRunning, len(podList.Items))
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}
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for _, p := range podList.Items {
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shouldBeReady := getStatefulPodOrdinal(&p) < int(numPodsReady)
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isReady := podutils.IsPodReady(&p)
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desiredReadiness := shouldBeReady == isReady
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framework.Logf("Waiting for pod %v to enter %v - Ready=%v, currently %v - Ready=%v", p.Name, v1.PodRunning, shouldBeReady, p.Status.Phase, isReady)
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if p.Status.Phase != v1.PodRunning || !desiredReadiness {
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return false, nil
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}
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}
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return true, nil
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})
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if pollErr != nil {
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framework.Failf("Failed waiting for pods to enter running: %v", pollErr)
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}
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}
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// WaitForState periodically polls for the ss and its pods until the until function returns either true or an error
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func WaitForState(ctx context.Context, c clientset.Interface, ss *appsv1.StatefulSet, until func(*appsv1.StatefulSet, *v1.PodList) (bool, error)) {
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pollErr := wait.PollImmediateWithContext(ctx, StatefulSetPoll, StatefulSetTimeout,
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func(ctx context.Context) (bool, error) {
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ssGet, err := c.AppsV1().StatefulSets(ss.Namespace).Get(ctx, ss.Name, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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podList := GetPodList(ctx, c, ssGet)
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return until(ssGet, podList)
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})
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if pollErr != nil {
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framework.Failf("Failed waiting for state update: %v", pollErr)
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}
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}
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// WaitForRunningAndReady waits for numStatefulPods in ss to be Running and Ready.
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func WaitForRunningAndReady(ctx context.Context, c clientset.Interface, numStatefulPods int32, ss *appsv1.StatefulSet) {
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WaitForRunning(ctx, c, numStatefulPods, numStatefulPods, ss)
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}
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// WaitForPodReady waits for the Pod named podName in set to exist and have a Ready condition.
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func WaitForPodReady(ctx context.Context, c clientset.Interface, set *appsv1.StatefulSet, podName string) (*appsv1.StatefulSet, *v1.PodList) {
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var pods *v1.PodList
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WaitForState(ctx, c, set, func(set2 *appsv1.StatefulSet, pods2 *v1.PodList) (bool, error) {
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set = set2
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pods = pods2
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for i := range pods.Items {
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if pods.Items[i].Name == podName {
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return podutils.IsPodReady(&pods.Items[i]), nil
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}
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}
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return false, nil
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})
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return set, pods
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}
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// WaitForStatusReadyReplicas waits for the ss.Status.ReadyReplicas to be equal to expectedReplicas
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func WaitForStatusReadyReplicas(ctx context.Context, c clientset.Interface, ss *appsv1.StatefulSet, expectedReplicas int32) {
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framework.Logf("Waiting for statefulset status.replicas updated to %d", expectedReplicas)
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ns, name := ss.Namespace, ss.Name
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pollErr := wait.PollImmediateWithContext(ctx, StatefulSetPoll, StatefulSetTimeout,
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func(ctx context.Context) (bool, error) {
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ssGet, err := c.AppsV1().StatefulSets(ns).Get(ctx, name, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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if ssGet.Status.ObservedGeneration < ss.Generation {
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return false, nil
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}
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if ssGet.Status.ReadyReplicas != expectedReplicas {
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framework.Logf("Waiting for stateful set status.readyReplicas to become %d, currently %d", expectedReplicas, ssGet.Status.ReadyReplicas)
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return false, nil
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}
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return true, nil
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})
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if pollErr != nil {
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framework.Failf("Failed waiting for stateful set status.readyReplicas updated to %d: %v", expectedReplicas, pollErr)
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}
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}
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// WaitForStatusAvailableReplicas waits for the ss.Status.Available to be equal to expectedReplicas
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func WaitForStatusAvailableReplicas(ctx context.Context, c clientset.Interface, ss *appsv1.StatefulSet, expectedReplicas int32) {
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framework.Logf("Waiting for statefulset status.AvailableReplicas updated to %d", expectedReplicas)
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ns, name := ss.Namespace, ss.Name
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pollErr := wait.PollImmediateWithContext(ctx, StatefulSetPoll, StatefulSetTimeout,
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func(ctx context.Context) (bool, error) {
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ssGet, err := c.AppsV1().StatefulSets(ns).Get(ctx, name, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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if ssGet.Status.ObservedGeneration < ss.Generation {
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return false, nil
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}
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if ssGet.Status.AvailableReplicas != expectedReplicas {
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framework.Logf("Waiting for stateful set status.AvailableReplicas to become %d, currently %d", expectedReplicas, ssGet.Status.AvailableReplicas)
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return false, nil
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}
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return true, nil
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})
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if pollErr != nil {
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framework.Failf("Failed waiting for stateful set status.AvailableReplicas updated to %d: %v", expectedReplicas, pollErr)
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}
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}
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// WaitForStatusReplicas waits for the ss.Status.Replicas to be equal to expectedReplicas
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func WaitForStatusReplicas(ctx context.Context, c clientset.Interface, ss *appsv1.StatefulSet, expectedReplicas int32) {
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framework.Logf("Waiting for statefulset status.replicas updated to %d", expectedReplicas)
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ns, name := ss.Namespace, ss.Name
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pollErr := wait.PollImmediateWithContext(ctx, StatefulSetPoll, StatefulSetTimeout,
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func(ctx context.Context) (bool, error) {
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ssGet, err := c.AppsV1().StatefulSets(ns).Get(ctx, name, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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if ssGet.Status.ObservedGeneration < ss.Generation {
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return false, nil
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}
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if ssGet.Status.Replicas != expectedReplicas {
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framework.Logf("Waiting for stateful set status.replicas to become %d, currently %d", expectedReplicas, ssGet.Status.Replicas)
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return false, nil
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}
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return true, nil
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})
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if pollErr != nil {
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framework.Failf("Failed waiting for stateful set status.replicas updated to %d: %v", expectedReplicas, pollErr)
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}
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}
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// Saturate waits for all Pods in ss to become Running and Ready.
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func Saturate(ctx context.Context, c clientset.Interface, ss *appsv1.StatefulSet) {
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var i int32
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for i = 0; i < *(ss.Spec.Replicas); i++ {
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framework.Logf("Waiting for stateful pod at index %v to enter Running", i)
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WaitForRunning(ctx, c, i+1, i, ss)
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framework.Logf("Resuming stateful pod at index %v", i)
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ResumeNextPod(ctx, c, ss)
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}
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}
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