// limitedLogAndRetry stops retrying after maxTimeout, failing the build.
func limitedLogAndRetry(buildupdater buildclient.BuildUpdater, maxTimeout time.Duration) controller.RetryFunc {
	return func(obj interface{}, err error, retries controller.Retry) bool {
		isFatal := strategy.IsFatal(err)
		build := obj.(*buildapi.Build)
		if !isFatal && time.Since(retries.StartTimestamp.Time) < maxTimeout {
			glog.V(4).Infof("Retrying Build %s/%s with error: %v", build.Namespace, build.Name, err)
			return true
		}
		build.Status.Phase = buildapi.BuildPhaseFailed
		if !isFatal {
			build.Status.Reason = buildapi.StatusReasonExceededRetryTimeout
			build.Status.Message = buildapi.StatusMessageExceededRetryTimeout
		}
		build.Status.Message = errors.ErrorToSentence(err)
		now := unversioned.Now()
		build.Status.CompletionTimestamp = &now
		glog.V(3).Infof("Giving up retrying Build %s/%s: %v", build.Namespace, build.Name, err)
		utilruntime.HandleError(err)
		if err := buildupdater.Update(build.Namespace, build); err != nil {
			// retry update, but only on error other than NotFound
			return !kerrors.IsNotFound(err)
		}
		return false
	}
}

// Create constructs a BuildController
func (factory *BuildControllerFactory) Create() controller.RunnableController {
	queue := cache.NewResyncableFIFO(cache.MetaNamespaceKeyFunc)
	cache.NewReflector(&buildLW{client: factory.OSClient}, &buildapi.Build{}, queue, 2*time.Minute).RunUntil(factory.Stop)

	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartRecordingToSink(&kcoreclient.EventSinkImpl{Interface: factory.KubeClient.Core().Events("")})

	client := ControllerClient{factory.KubeClient, factory.OSClient}
	buildController := &buildcontroller.BuildController{
		BuildUpdater:      factory.BuildUpdater,
		BuildLister:       factory.BuildLister,
		ImageStreamClient: client,
		PodManager:        client,
		RunPolicies:       policy.GetAllRunPolicies(factory.BuildLister, factory.BuildUpdater),
		BuildStrategy: &typeBasedFactoryStrategy{
			DockerBuildStrategy: factory.DockerBuildStrategy,
			SourceBuildStrategy: factory.SourceBuildStrategy,
			CustomBuildStrategy: factory.CustomBuildStrategy,
		},
		Recorder:       eventBroadcaster.NewRecorder(kapi.EventSource{Component: "build-controller"}),
		BuildDefaults:  factory.BuildDefaults,
		BuildOverrides: factory.BuildOverrides,
	}

	return &controller.RetryController{
		Queue: queue,
		RetryManager: controller.NewQueueRetryManager(
			queue,
			cache.MetaNamespaceKeyFunc,
			limitedLogAndRetry(factory.BuildUpdater, 30*time.Minute),
			flowcontrol.NewTokenBucketRateLimiter(1, 10)),
		Handle: func(obj interface{}) error {
			build := obj.(*buildapi.Build)
			err := buildController.HandleBuild(build)
			if err != nil {
				// Update the build status message only if it changed.
				if msg := errors.ErrorToSentence(err); build.Status.Message != msg {
					// Set default Reason.
					if len(build.Status.Reason) == 0 {
						build.Status.Reason = buildapi.StatusReasonError
					}
					build.Status.Message = msg
					if err := buildController.BuildUpdater.Update(build.Namespace, build); err != nil {
						glog.V(2).Infof("Failed to update status message of Build %s/%s: %v", build.Namespace, build.Name, err)
					}
					buildController.Recorder.Eventf(build, kapi.EventTypeWarning, "HandleBuildError", "Build has error: %v", err)
				}
			}
			return err
		},
	}
}