0. 開始

func NewControllerInitializers() map[string]InitFunc {
	controllers := map[string]InitFunc{}

	controllers["deployment"] = startDeploymentController
	controllers["replicaset"] = startReplicaSetController

	return controllers
}

  0.1 startDeploymentController函式

• 判斷deployments是否開啟
• 建立並初始化DeploymentController
  物件。啟動NDeploymentController物件的Run方法，迴圈處理流程

func startDeploymentController(ctx ControllerContext) (bool, error) {
	if !ctx.AvailableResources[schema.GroupVersionResource{Group: "extensions", Version: "v1beta1", Resource: "deployments"}] {
		return false, nil
	}
	dc, err := deployment.NewDeploymentController(
		ctx.InformerFactory.Extensions().V1beta1().Deployments(),
		ctx.InformerFactory.Extensions().V1beta1().ReplicaSets(),
		ctx.InformerFactory.Core().V1().Pods(),
		ctx.ClientBuilder.ClientOrDie("deployment-controller"),
	)
	if err != nil {
		return true, fmt.Errorf("error creating Deployment controller: %v", err)
	}
	go dc.Run(int(ctx.Options.ConcurrentDeploymentSyncs), ctx.Stop)
	return true, nil
}