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Golang ReplicationControllerInterface.Watch方法代码示例

本文整理汇总了Golang中k8s/io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/unversioned.ReplicationControllerInterface.Watch方法的典型用法代码示例。如果您正苦于以下问题:Golang ReplicationControllerInterface.Watch方法的具体用法?Golang ReplicationControllerInterface.Watch怎么用?Golang ReplicationControllerInterface.Watch使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在k8s/io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/unversioned.ReplicationControllerInterface的用法示例。


在下文中一共展示了ReplicationControllerInterface.Watch方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Golang代码示例。

示例1: WaitForADeployment

// WaitForADeployment waits for a deployment to fulfill either isOK or isFailed.
// When isOK returns true, WaitForADeployment returns nil, when isFailed returns
// true, WaitForADeployment returns an error including the deployment status.
// WaitForADeployment waits for at most a certain timeout (non-configurable).
func WaitForADeployment(client kcoreclient.ReplicationControllerInterface, name string, isOK, isFailed func(*kapi.ReplicationController) bool, oc *CLI) error {
	timeout := 15 * time.Minute

	// closing done signals that any pending operation should be aborted.
	done := make(chan struct{})
	defer close(done)

	// okOrFailed returns whether a replication controller matches either of
	// the predicates isOK or isFailed, and the associated error in case of
	// failure.
	okOrFailed := func(rc *kapi.ReplicationController) (err error, matched bool) {
		if isOK(rc) {
			return nil, true
		}
		if isFailed(rc) {
			return fmt.Errorf("The deployment %q status is %q", name, rc.Annotations[deployapi.DeploymentStatusAnnotation]), true
		}
		return nil, false
	}

	// waitForDeployment waits until okOrFailed returns true or the done
	// channel is closed.
	waitForDeployment := func() (err error, retry bool) {
		requirement, err := labels.NewRequirement(deployapi.DeploymentConfigAnnotation, selection.Equals, sets.NewString(name))
		if err != nil {
			return fmt.Errorf("unexpected error generating label selector: %v", err), false
		}
		list, err := client.List(kapi.ListOptions{LabelSelector: labels.NewSelector().Add(*requirement)})
		if err != nil {
			return err, false
		}
		// multiple deployments are conceivable; so we look to see how the latest depoy does
		var lastRC *kapi.ReplicationController
		for _, rc := range list.Items {
			if lastRC == nil {
				lastRC = &rc
				continue
			}
			if compareResourceControllerNames(lastRC.GetName(), rc.GetName()) <= 0 {
				lastRC = &rc
			}
		}

		if lastRC != nil {
			err, matched := okOrFailed(lastRC)
			if matched {
				return err, false
			}
		}

		w, err := client.Watch(kapi.ListOptions{LabelSelector: labels.NewSelector().Add(*requirement), ResourceVersion: list.ResourceVersion})
		if err != nil {
			return err, false
		}
		defer w.Stop()
		for {
			select {
			case val, ok := <-w.ResultChan():
				if !ok {
					// watcher error, re-get and re-watch
					return nil, true
				}
				rc, ok := val.Object.(*kapi.ReplicationController)
				if !ok {
					continue
				}
				if lastRC == nil {
					lastRC = rc
				}
				// multiple deployments are conceivable; so we look to see how the latest deployment does
				if compareResourceControllerNames(lastRC.GetName(), rc.GetName()) <= 0 {
					lastRC = rc
					err, matched := okOrFailed(rc)
					if matched {
						return err, false
					}
				}
			case <-done:
				// no more time left, stop what we were doing,
				// do no retry.
				return nil, false
			}
		}
	}

	// errCh is buffered so the goroutine below never blocks on sending,
	// preventing a goroutine leak if we reach the timeout.
	errCh := make(chan error, 1)

	go func() {
		defer close(errCh)
		err, retry := waitForDeployment()
		for retry {
			err, retry = waitForDeployment()
		}
		errCh <- err
//.........这里部分代码省略.........
开发者ID:LalatenduMohanty,项目名称:origin,代码行数:101,代码来源:framework.go


注:本文中的k8s/io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/unversioned.ReplicationControllerInterface.Watch方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。