mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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133 lines
3.7 KiB
Go
133 lines
3.7 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors 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"
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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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Interval = time.Second * 1
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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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// timeout is how long we'll wait for the termination to be successful
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// gracePeriod is time given to an API object for it to delete itself cleanly (e.g. pod shutdown)
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type Reaper interface {
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Stop(namespace, name string, timeout time.Duration, gracePeriod *api.DeleteOptions) (string, error)
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}
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type NoSuchReaperError struct {
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kind string
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}
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func (n *NoSuchReaperError) Error() string {
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return fmt.Sprintf("no reaper has been implemented for %q", n.kind)
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}
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func IsNoSuchReaperError(err error) bool {
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_, ok := err.(*NoSuchReaperError)
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return ok
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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, &NoSuchReaperError{kind}
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}
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func ReaperForReplicationController(c client.Interface, timeout time.Duration) (Reaper, error) {
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return &ReplicationControllerReaper{c, Interval, timeout}, nil
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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, timeout time.Duration, gracePeriod *api.DeleteOptions) (string, error) {
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rc := reaper.ReplicationControllers(namespace)
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scaler, err := ScalerFor("ReplicationController", NewScalerClient(*reaper))
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if err != nil {
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return "", err
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}
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if timeout == 0 {
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rc, err := rc.Get(name)
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if err != nil {
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return "", err
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}
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timeout = Timeout + time.Duration(10*rc.Spec.Replicas)*time.Second
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}
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retry := NewRetryParams(reaper.pollInterval, reaper.timeout)
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waitForReplicas := NewRetryParams(reaper.pollInterval, timeout)
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if err = scaler.Scale(namespace, name, 0, nil, retry, waitForReplicas); err != nil {
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return "", err
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}
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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, timeout time.Duration, gracePeriod *api.DeleteOptions) (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, gracePeriod); 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, timeout time.Duration, gracePeriod *api.DeleteOptions) (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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