June 2021
Intermediate to advanced
335 pages
5h 50m
Chinese
Content preview from Kubernetes编程
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72
｜
第
3
章
3.3.3 Watch
Watch
提供了发现对象各种状态变化（添加、删除或更新）的机制。
k8s.io/
apimachinery/pkg/watch
返回的
watch.Interface
结构如下：
// Interface can be implemented by anything that knows how to watch and
// report changes.
type Interface interface {
// Stops watching. Will close the channel returned by ResultChan(). Releases
// any resources used by the watch.
Stop()
// Returns a chan which will receive all the events. If an error occurs
// or Stop() is called, this channel will be closed, in which case the
// watch should be completely cleaned up.
ResultChan() <-chan Event
}
watch
接口返回的
Channel
对象可以返回三种不同的状态：
// EventType defines the possible types of events.
type EventType ...
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