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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", NewResizerClient(*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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