runLeaderElection

main.go

func runLeaderElection(lock *resourcelock.LeaseLock, ctx context.Context, id string) {
	leaderelection.RunOrDie(ctx, leaderelection.LeaderElectionConfig{
		Lock:            lock,
		ReleaseOnCancel: true,
		LeaseDuration:   15 * time.Second,
		RenewDeadline:   10 * time.Second,
		RetryPeriod:     2 * time.Second,
		Callbacks: leaderelection.LeaderCallbacks{
			OnStartedLeading: func(c context.Context) {
				doStuff()
			},
			OnStoppedLeading: func() {
				klog.Info("no longer the leader, staying inactive.")
			},
			OnNewLeader: func(current_id string) {
				if current_id == id {
					klog.Info("still the leader!")
					return
				}
				klog.Info("new leader is %s", current_id)
			},
		},
	})
}