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wait_util.go
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wait_util.go
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// Copyright 2017 The etcd-operator Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package e2eutil
import (
"bytes"
"fmt"
"path"
"testing"
"time"
backups3 "github.com/coreos/etcd-operator/pkg/backup/s3"
"github.com/coreos/etcd-operator/pkg/spec"
"github.com/coreos/etcd-operator/pkg/util/k8sutil"
"github.com/coreos/etcd-operator/pkg/util/retryutil"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/pkg/api/v1"
)
type acceptFunc func(*spec.Cluster) bool
type filterFunc func(*v1.Pod) bool
func CalculateRestoreWaitTime(needDataClone bool) time.Duration {
waitTime := 240 * time.Second
if needDataClone {
// Take additional time to clone the data.
waitTime += 60 * time.Second
}
return waitTime
}
func WaitUntilPodSizeReached(t *testing.T, kubeClient kubernetes.Interface, size int, timeout time.Duration, cl *spec.Cluster) ([]string, error) {
var names []string
err := retryutil.Retry(10*time.Second, int(timeout/(10*time.Second)), func() (done bool, err error) {
podList, err := kubeClient.Core().Pods(cl.Metadata.Namespace).List(k8sutil.ClusterListOpt(cl.Metadata.Name))
if err != nil {
return false, err
}
names = nil
var nodeNames []string
for i := range podList.Items {
pod := &podList.Items[i]
if pod.Status.Phase != v1.PodRunning {
continue
}
names = append(names, pod.Name)
nodeNames = append(nodeNames, pod.Spec.NodeName)
}
LogfWithTimestamp(t, "waiting size (%d), etcd pods: names (%v), nodes (%v)", size, names, nodeNames)
// TODO: Change this to check for ready members and not just cluster pods
if len(names) != size {
return false, nil
}
return true, nil
})
if err != nil {
return nil, err
}
return names, nil
}
func WaitUntilSizeReached(t *testing.T, kubeClient kubernetes.Interface, size int, timeout time.Duration, cl *spec.Cluster) ([]string, error) {
return waitSizeReachedWithAccept(t, kubeClient, size, timeout, cl)
}
func WaitSizeAndVersionReached(t *testing.T, kubeClient kubernetes.Interface, version string, size int, timeout time.Duration, cl *spec.Cluster) error {
_, err := waitSizeReachedWithAccept(t, kubeClient, size, timeout, cl, func(currCluster *spec.Cluster) bool {
return currCluster.Status.CurrentVersion == version
})
return err
}
func waitSizeReachedWithAccept(t *testing.T, kubeClient kubernetes.Interface, size int, timeout time.Duration, cl *spec.Cluster, accepts ...acceptFunc) ([]string, error) {
var names []string
err := retryutil.Retry(10*time.Second, int(timeout/(10*time.Second)), func() (done bool, err error) {
currCluster, err := k8sutil.GetClusterTPRObject(kubeClient.CoreV1().RESTClient(), cl.Metadata.Namespace, cl.Metadata.Name)
if err != nil {
return false, err
}
for _, accept := range accepts {
if !accept(currCluster) {
return false, nil
}
}
names = currCluster.Status.Members.Ready
LogfWithTimestamp(t, "waiting size (%d), healthy etcd members: names (%v)", size, names)
if len(names) != size {
return false, nil
}
return true, nil
})
if err != nil {
return nil, err
}
return names, nil
}
func WaitUntilMembersWithNamesDeleted(t *testing.T, kubeClient kubernetes.Interface, timeout time.Duration, cl *spec.Cluster, targetNames ...string) ([]string, error) {
var remaining []string
err := retryutil.Retry(10*time.Second, int(timeout/(10*time.Second)), func() (done bool, err error) {
currCluster, err := k8sutil.GetClusterTPRObject(kubeClient.CoreV1().RESTClient(), cl.Metadata.Namespace, cl.Metadata.Name)
if err != nil {
return false, err
}
readyMembers := currCluster.Status.Members.Ready
remaining = nil
for _, name := range targetNames {
if presentIn(name, readyMembers) {
remaining = append(remaining, name)
}
}
LogfWithTimestamp(t, "waiting on members (%v) to be deleted", remaining)
if len(remaining) != 0 {
return false, nil
}
return true, nil
})
if err != nil {
return nil, err
}
return remaining, nil
}
func presentIn(a string, list []string) bool {
for _, l := range list {
if a == l {
return true
}
}
return false
}
func waitResourcesDeleted(t *testing.T, kubeClient kubernetes.Interface, cl *spec.Cluster) error {
undeletedPods, err := WaitPodsDeleted(kubeClient, cl.Metadata.Namespace, 30*time.Second, k8sutil.ClusterListOpt(cl.Metadata.Name))
if err != nil {
if retryutil.IsRetryFailure(err) && len(undeletedPods) > 0 {
p := undeletedPods[0]
LogfWithTimestamp(t, "waiting pod (%s) to be deleted.", p.Name)
buf := bytes.NewBuffer(nil)
buf.WriteString("init container status:\n")
printContainerStatus(buf, p.Status.InitContainerStatuses)
buf.WriteString("container status:\n")
printContainerStatus(buf, p.Status.ContainerStatuses)
t.Logf("pod (%s) status.phase is (%s): %v", p.Name, p.Status.Phase, buf.String())
}
return fmt.Errorf("fail to wait pods deleted: %v", err)
}
err = retryutil.Retry(5*time.Second, 5, func() (done bool, err error) {
list, err := kubeClient.CoreV1().Services(cl.Metadata.Namespace).List(k8sutil.ClusterListOpt(cl.Metadata.Name))
if err != nil {
return false, err
}
if len(list.Items) > 0 {
LogfWithTimestamp(t, "waiting service (%s) to be deleted", list.Items[0].Name)
return false, nil
}
return true, nil
})
if err != nil {
return fmt.Errorf("fail to wait services deleted: %v", err)
}
return nil
}
func WaitBackupDeleted(kubeClient kubernetes.Interface, cl *spec.Cluster, storageCheckerOptions StorageCheckerOptions) error {
err := retryutil.Retry(5*time.Second, 5, func() (bool, error) {
_, err := kubeClient.AppsV1beta1().Deployments(cl.Metadata.Namespace).Get(k8sutil.BackupSidecarName(cl.Metadata.Name), metav1.GetOptions{})
if err == nil {
return false, nil
}
if apierrors.IsNotFound(err) {
return true, nil
}
return false, err
})
if err != nil {
return fmt.Errorf("failed to wait backup Deployment deleted: %v", err)
}
err = retryutil.Retry(5*time.Second, 2, func() (done bool, err error) {
ls := labels.SelectorFromSet(map[string]string{
"app": k8sutil.BackupPodSelectorAppField,
"etcd_cluster": cl.Metadata.Name,
}).String()
pl, err := kubeClient.CoreV1().Pods(cl.Metadata.Namespace).List(metav1.ListOptions{
LabelSelector: ls,
})
if err != nil {
return false, err
}
if len(pl.Items) == 0 {
return true, nil
}
if pl.Items[0].DeletionTimestamp != nil {
return true, nil
}
return false, nil
})
if err != nil {
return fmt.Errorf("failed to wait backup pod terminated: %v", err)
}
// The rest is to track backup storage, e.g. PV or S3 "dir" deleted.
// If AutoDelete=false, we don't delete them and thus don't check them.
if !cl.Spec.Backup.AutoDelete {
return nil
}
err = retryutil.Retry(5*time.Second, 5, func() (done bool, err error) {
switch cl.Spec.Backup.StorageType {
case spec.BackupStorageTypePersistentVolume, spec.BackupStorageTypeDefault:
pl, err := kubeClient.CoreV1().PersistentVolumeClaims(cl.Metadata.Namespace).List(k8sutil.ClusterListOpt(cl.Metadata.Name))
if err != nil {
return false, err
}
if len(pl.Items) > 0 {
return false, nil
}
case spec.BackupStorageTypeS3:
s3cli := backups3.NewFromClient(storageCheckerOptions.S3Bucket,
path.Join(cl.Metadata.Namespace, cl.Metadata.Name), storageCheckerOptions.S3Cli)
keys, err := s3cli.List()
if err != nil {
return false, err
}
if len(keys) > 0 {
return false, nil
}
}
return true, nil
})
if err != nil {
return fmt.Errorf("failed to wait storage (%s) to be deleted: %v", cl.Spec.Backup.StorageType, err)
}
return nil
}
func WaitPodsWithImageDeleted(kubecli kubernetes.Interface, namespace, image string, timeout time.Duration, lo metav1.ListOptions) ([]*v1.Pod, error) {
return waitPodsDeleted(kubecli, namespace, timeout, lo, func(p *v1.Pod) bool {
for _, c := range p.Spec.Containers {
if c.Image == image {
return false
}
}
return true
})
}
func WaitPodsDeleted(kubecli kubernetes.Interface, namespace string, timeout time.Duration, lo metav1.ListOptions) ([]*v1.Pod, error) {
return waitPodsDeleted(kubecli, namespace, timeout, lo)
}
func waitPodsDeleted(kubecli kubernetes.Interface, namespace string, timeout time.Duration, lo metav1.ListOptions, filters ...filterFunc) ([]*v1.Pod, error) {
var pods []*v1.Pod
err := retryutil.Retry(5*time.Second, int(timeout/(5*time.Second)), func() (bool, error) {
podList, err := kubecli.CoreV1().Pods(namespace).List(lo)
if err != nil {
return false, err
}
pods = nil
for i := range podList.Items {
p := &podList.Items[i]
filtered := false
for _, filter := range filters {
if filter(p) {
filtered = true
}
}
if !filtered {
pods = append(pods, p)
}
}
return len(pods) == 0, nil
})
return pods, err
}