fix(logs): Changed ratelimiter in lvmvol controller (#195)

Signed-off-by: Abhilash Shetty <[email protected]>

Author: abhilashshetty04

pkg/mgmt/lvmnode/builder.go

@@ -83,12 +83,13 @@ type NodeController struct {
 //This function returns controller object with all required keys set to watch over lvmnode object
 func newNodeController(kubeClient kubernetes.Interface, client dynamic.Interface,
 	dynInformer dynamicinformer.DynamicSharedInformerFactory, ownerRef metav1.OwnerReference) *NodeController {
+	//Creating informer for lvm node resource
 	nodeInformer := dynInformer.ForResource(noderesource).Informer()
-	klog.Infof("Creating event broadcaster")
 	eventBroadcaster := record.NewBroadcaster()
 	eventBroadcaster.StartLogging(klog.Infof)
 	eventBroadcaster.StartRecordingToSink(&typedcorev1.EventSinkImpl{Interface: kubeClient.CoreV1().Events("")})
 	recorder := eventBroadcaster.NewRecorder(scheme.Scheme, corev1.EventSource{Component: controllerAgentName})
+
 	klog.Infof("Creating lvm node controller object")
 	nodeContrller := &NodeController{
 		kubeclientset: kubeClient,
@@ -100,6 +101,8 @@ func newNodeController(kubeClient kubernetes.Interface, client dynamic.Interface
 		pollInterval:  60 * time.Second,
 		ownerRef:      ownerRef,
 	}
+
+	klog.Infof("Adding Event handler functions for lvm node controller")
 	nodeInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
 		AddFunc:    nodeContrller.addNode,
 		UpdateFunc: nodeContrller.updateNode,

pkg/mgmt/snapshot/builder.go

@@ -77,22 +77,23 @@ func newSnapController(kubeClient kubernetes.Interface, client dynamic.Interface
 	dynInformer dynamicinformer.DynamicSharedInformerFactory) *SnapController {
 	//Creating informer for lvmsnapshot resource
 	snapInformer := dynInformer.ForResource(snapresource).Informer()
-	klog.Infoln("Using new rate limiter")
+	//This ratelimiter requeues failed items after 5 secs for first 12 attempts. Then objects are requeued after 30 secs.
 	rateLimiter := workqueue.NewItemFastSlowRateLimiter(5*time.Second, 30*time.Second, 12)
+
 	klog.Infof("Creating event broadcaster")
 	eventBroadcaster := record.NewBroadcaster()
 	eventBroadcaster.StartLogging(klog.Infof)
 	eventBroadcaster.StartRecordingToSink(&typedcorev1.EventSinkImpl{Interface: kubeClient.CoreV1().Events("")})
 	recorder := eventBroadcaster.NewRecorder(scheme.Scheme, corev1.EventSource{Component: controllerAgentName})
+
 	klog.Infof("Creating lvm snapshot controller object")
 	snapCtrller := &SnapController{
 		kubeclientset: kubeClient,
 		clientset:     client,
 		snapLister:    dynamiclister.New(snapInformer.GetIndexer(), snapresource),
 		snapSynced:    snapInformer.HasSynced,
-		//workqueue:     workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "Snap"),
-		workqueue: workqueue.NewNamedRateLimitingQueue(rateLimiter, "Snap"),
-		recorder:  recorder,
+		workqueue:     workqueue.NewNamedRateLimitingQueue(rateLimiter, "Snap"),
+		recorder:      recorder,
 	}
 	klog.Infof("Adding Event handler functions for lvm snapshot controller")
 	snapInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{

pkg/mgmt/volume/builder.go

@@ -17,6 +17,8 @@ limitations under the License.
 package volume
 
 import (
+	"time"
+
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/client-go/dynamic"
@@ -73,8 +75,11 @@ type VolController struct {
 //This function returns controller object with all required keys set to watch over lvmvolume object
 func newVolController(kubeClient kubernetes.Interface, client dynamic.Interface,
 	dynInformer dynamicinformer.DynamicSharedInformerFactory) *VolController {
-
+	//Creating informer for lvmvolume resource
 	volInformer := dynInformer.ForResource(volresource).Informer()
+	//This ratelimiter requeues failed items after 5 secs for first 12 attempts. Then objects are requeued after 30 secs.
+	rateLimiter := workqueue.NewItemFastSlowRateLimiter(5*time.Second, 30*time.Second, 12)
+
 	klog.Infof("Creating event broadcaster")
 	eventBroadcaster := record.NewBroadcaster()
 	eventBroadcaster.StartLogging(klog.Infof)
@@ -87,9 +92,10 @@ func newVolController(kubeClient kubernetes.Interface, client dynamic.Interface,
 		clientset:     client,
 		VolLister:     dynamiclister.New(volInformer.GetIndexer(), volresource),
 		VolSynced:     volInformer.HasSynced,
-		workqueue:     workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "Vol"),
+		workqueue:     workqueue.NewNamedRateLimitingQueue(rateLimiter, "Vol"),
 		recorder:      recorder,
 	}
+
 	klog.Infof("Adding Event handler functions for lvm volume controller")
 	volInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
 		AddFunc:    volCtrller.addVol,