40e2eae5b4
When kubectl does rolling updates of replication controllers, retry updates that fail due to version mismatches (caused by concurrent updates by other clients). These failed rolling updates were causing intermittent e2e test failures (e.g. issue 5821)
104 lines
2.7 KiB
Go
104 lines
2.7 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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 kubectl
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import (
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"fmt"
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"time"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/meta"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
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)
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const (
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shortInterval = time.Millisecond * 100
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interval = time.Second * 3
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timeout = time.Minute * 5
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)
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// A Reaper handles terminating an object as gracefully as possible.
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type Reaper interface {
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Stop(namespace, name string) (string, error)
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}
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func ReaperFor(kind string, c client.Interface) (Reaper, error) {
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switch kind {
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case "ReplicationController":
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return &ReplicationControllerReaper{c, interval, timeout}, nil
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case "Pod":
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return &PodReaper{c}, nil
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case "Service":
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return &ServiceReaper{c}, nil
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}
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return nil, fmt.Errorf("no reaper has been implemented for %q", kind)
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}
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type ReplicationControllerReaper struct {
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client.Interface
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pollInterval, timeout time.Duration
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}
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type PodReaper struct {
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client.Interface
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}
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type ServiceReaper struct {
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client.Interface
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}
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type objInterface interface {
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Delete(name string) error
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Get(name string) (meta.Interface, error)
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}
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func (reaper *ReplicationControllerReaper) Stop(namespace, name string) (string, error) {
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rc := reaper.ReplicationControllers(namespace)
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resizer, err := ResizerFor("ReplicationController", *reaper)
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if err != nil {
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return "", err
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}
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retry := &RetryParams{shortInterval, reaper.timeout}
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waitForReplicas := &RetryParams{reaper.pollInterval, reaper.timeout}
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err = resizer.Resize(namespace, name, 0, nil, retry, waitForReplicas)
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if err := rc.Delete(name); err != nil {
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return "", err
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}
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return fmt.Sprintf("%s stopped", name), nil
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}
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func (reaper *PodReaper) Stop(namespace, name string) (string, error) {
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pods := reaper.Pods(namespace)
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_, err := pods.Get(name)
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if err != nil {
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return "", err
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}
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if err := pods.Delete(name); err != nil {
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return "", err
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}
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return fmt.Sprintf("%s stopped", name), nil
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}
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func (reaper *ServiceReaper) Stop(namespace, name string) (string, error) {
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services := reaper.Services(namespace)
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_, err := services.Get(name)
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if err != nil {
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return "", err
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}
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if err := services.Delete(name); err != nil {
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return "", err
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}
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return fmt.Sprintf("%s stopped", name), nil
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}
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