true,
		},
		{
			[]string{"data/controller{1...11}/export{1...8}"},
			[]uint64{88},
			[][]uint64{{11, 11, 11, 11, 11, 11, 11, 11}},
			true,
		},
		{
			[]string{"data{1...4}"},
			[]uint64{4},
			[][]uint64{{4}},
			true,
		},
		{
			[]string{"data/controller1/export{1...10}, data/controller2/export{1...10}, data/controller3/export{1...10}"},
			[]uint64{10, 10, 10},

	return func() time.Duration {
		return resyncPeriod
	}
}

// Expectations are a way for controllers to tell the controller manager what they expect. eg:
//	ControllerExpectations: {
//		controller1: expects  2 adds in 2 minutes
//		controller2: expects  2 dels in 2 minutes
//		controller3: expects -1 adds in 2 minutes => controller3's expectations have already been met
//	}
//
// Implementation:

	}
	c.healthCondition = controllers.NewQueue("healthcheck",
		controllers.WithMaxAttempts(maxRetries),
		controllers.WithGenericReconciler(c.updateWorkloadEntryHealth))
	return c
}

func (c *Controller) Run(stop <-chan struct{}) {
	c.healthCondition.Run(stop)
}

// QueueWorkloadEntryHealth enqueues the associated WorkloadEntries health status.
func (c *Controller) QueueWorkloadEntryHealth(proxy *model.Proxy, event HealthEvent) {

## Writing Controllers

The `controllers` package offers a variety of helpers for writing controllers.
These operate in a similar manner as [`controller-runtime`](https://github.com/kubernetes-sigs/controller-runtime) but are *far* smaller and less abstract.

With a few exceptions, Istio controllers typically are split in two phases: construction and running.

	// re-convert ingress to new-vs.
	c.services.AddEventHandler(controllers.FromEventHandler(func(o controllers.Event) {
		c.onServiceEvent(o)
	}))

	return c
}

func (c *controller) Run(stop <-chan struct{}) {
	kube.WaitForCacheSync("ingress", stop, c.ingress.HasSynced, c.services.HasSynced, c.classes.HasSynced)
	c.queue.Run(stop)
	controllers.ShutdownAll(c.ingress, c.services, c.classes)
}

		}
	}
	c := &Controller{
		instanceID:       instanceID,
		store:            store,
		cleanupLimit:     rate.NewLimiter(rate.Limit(20), 1),
		cleanupQueue:     queue.NewDelayed(),
		adsConnections:   newAdsConnections(),
		maxConnectionAge: maxConnAge,
	}
	c.queue = controllers.NewQueue("unregister_workloadentry",
		controllers.WithMaxAttempts(maxRetries),

) *Controller {
	o := Options{
		WatchedNamespace: ns,
		CABundleWatcher:  caBundleWatcher,
		Revision:         revision,
		ServiceName:      "istiod",
	}
	return newController(o, client)
}

func newController(o Options, client kube.Client) *Controller {
	c := &Controller{
		o:      o,
		client: client,
	}

	c.queue = controllers.NewQueue("validation",

// See the License for the specific language governing permissions and
// limitations under the License.

package controller

import (
	"sigs.k8s.io/controller-runtime/pkg/manager"

	"istio.io/istio/operator/pkg/controller/istiocontrolplane"
)

// AddToManager adds all Controllers to the Manager
func AddToManager(m manager.Manager, options *istiocontrolplane.Options) error {
	return istiocontrolplane.Add(m, options)

	"istio.io/istio/pkg/util/sets"
)

// The aggregate controller does not implement serviceregistry.Instance since it may be comprised of various
// providers and clusters.
var (
	_ model.ServiceDiscovery    = &Controller{}
	_ model.AggregateController = &Controller{}
)

// Controller aggregates data across different registries and monitors for changes
type Controller struct {
	meshHolder mesh.Holder

// made on the client.
func NewController(cs model.ConfigStore) *Controller {
	out := &Controller{
		configStore: cs,
		monitor:     NewMonitor(cs),
	}
	return out
}

// NewSyncController return an implementation of model.ConfigStoreController which processes events synchronously
func NewSyncController(cs model.ConfigStore) *Controller {
	out := &Controller{
		configStore: cs,
		monitor:     NewSyncMonitor(cs),
	}