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How to use DefaultBackoff method of utils Package

Best Rod code snippet using utils.DefaultBackoff

template_engine.go

Source:template_engine.go

...187	if datasetUFSTotalBytes > currentCachedCapacityBytes+capacity {188		nonCacheable = datasetUFSTotalBytes - currentCachedCapacityBytes - capacity189	}190	// 3.Update the runtime status191	err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {192		runtime, err := utils.GetRuntime(b.Client, b.Config.Name, b.Config.Namespace)193		if err != nil {194			return err195		}196		runtimeToUpdate := runtime.DeepCopy()197		if len(runtimeToUpdate.Status.CacheStates) == 0 {198			runtimeToUpdate.Status.CacheStates = map[data.CacheStateName]string{}199		}200		runtimeToUpdate.Status.CacheStates[data.CacheCapacity] = units.BytesSize(float64(capacity))201		// runtimeToUpdate.Status.CacheStates[data.Cacheable] = units.BytesSize(float64(0))202		runtimeToUpdate.Status.CacheStates[data.Cached] = units.BytesSize(float64(0))203		runtimeToUpdate.Status.CacheStates[data.NonCacheable] = units.BytesSize(float64(nonCacheable))204		runtimeToUpdate.Status.CacheStates[data.CachedPercentage] = fmt.Sprintf("%.2f %%", 0.00)205		// runtimeToUpdate.Status.CacheStates[data.Cacheable]206		err = b.Client.Status().Update(context.TODO(), runtimeToUpdate)207		if err != nil {208			b.Log.Error(err, "Failed update runtime")209		}210		return err211	})212	// TODO:(cheyang)Algorithm needs optimization213	return expectedWorkerNum, err214}215// Remove the nodes to put the worker for caching216func (b *TemplateEngine) RemoveCacheNodes() (err error) {217	var (218		nodeList          *corev1.NodeList = &corev1.NodeList{}219		labelNameToAddRaw                  = common.LabelAnnotationStorageCapacityPrefix + "raw-" + b.Type() + "-" + b.Config.Name220		labelNameToAdd                     = common.LabelAnnotationStorageCapacityPrefix + "human-" + b.Type() + "-" + b.Config.Name221		labelName                          = common.LabelAnnotationStorageCapacityPrefix + b.Type() + "-" + b.Config.Name222		labelCommonName                    = common.LabelAnnotationStorageCapacityPrefix + b.Config.Name223	)224	err = b.List(context.TODO(), nodeList, &client.ListOptions{})225	if err != nil {226		return227	}228	// 1.select the nodes229	// TODO(cheyang) Need consider node selector230	for _, node := range nodeList.Items {231		// nodes = append(nodes, &node)232		toUpdate := node.DeepCopy()233		if len(toUpdate.Labels) == 0 {234			continue235		}236		delete(toUpdate.Labels, labelNameToAddRaw)237		delete(toUpdate.Labels, labelNameToAdd)238		delete(toUpdate.Labels, labelName)239		delete(toUpdate.Labels, labelCommonName)240		if len(toUpdate.Labels) < len(node.Labels) {241			err := b.Client.Update(context.TODO(), toUpdate)242			if err != nil {243				return err244			}245		}246	}247	return248}249// label the node to cache250func (b *TemplateEngine) LabelCachedNodes(selectedNodes []NodeInfo, cacheCapacity uint64) (err error) {251	// labelNameToAdd := common.LabelAnnotationStorageCapacityPrefix + b.Config.Name252	var (253		needed uint64 = cacheCapacity254	)255	for _, n := range selectedNodes {256		allocated, err := b.labelCachedNode(n, needed)257		if err != nil {258			b.Log.Error(err, "LabelCachedNodes")259			return err260		}261		needed = needed - allocated262		// if toUpdate.Labels == nil {263		// 					toUpdate.Labels = make(map[string]string)264		// 				}265		// 			toUpdate.Labels[apps.DefaultDaemonSetUniqueLabelKey] = keepCur.Labels[apps.DefaultDaemonSetUniqueLabelKey]266		// 		_, err = dsc.kubeClient.CoreV1().Pods(ds.Namespace).Update(toUpdate)267		// labels := node.Labels268		// for _, label := range labels {269		// }270	}271	return err272}273func (b *TemplateEngine) labelCachedNode(selectedNode NodeInfo, needed uint64) (allocated uint64, err error) {274	var (275		labelNameToAddRaw = common.LabelAnnotationStorageCapacityPrefix + "raw-" + b.Type() + "-" + b.Config.Name276		// labelNameToAddKiB = common.LabelAnnotationStorageCapacityPrefix + "KB-" + b.Type() + "-" + b.Config.Name277		// labelNameToAddMiB = common.LabelAnnotationStorageCapacityPrefix + "MB-" + b.Type() + "-" + b.Config.Name278		// labelNameToAddGiB = common.LabelAnnotationStorageCapacityPrefix + "GB-" + b.Type() + "-" + b.Config.Name279		labelNameToAdd  = common.LabelAnnotationStorageCapacityPrefix + "human-" + b.Type() + "-" + b.Config.Name280		labelName       = common.LabelAnnotationStorageCapacityPrefix + b.Type() + "-" + b.Config.Name281		labelCommonName = common.LabelAnnotationStorageCapacityPrefix + b.Config.Name282	)283	err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {284		nodeName := selectedNode.GetName()285		node, err := kubeclient.GetNode(b.Client, nodeName)286		if node == nil {287			return err288		}289		toUpdate := node.DeepCopy()290		if toUpdate.Labels == nil {291			toUpdate.Labels = make(map[string]string)292		}293		if needed < selectedNode.GetAvailableStorageCapacity() {294			value := units.BytesSize(float64(needed))295			toUpdate.Labels[labelNameToAdd] = value296			// For now, we are not able to set node label to pods due to https://github.com/kubernetes/kubernetes/issues/40610297			// We have set it in pod level298			err := b.SetRuntimeMaxMemory(selectedNode.GetName(), value)299			if err != nil {300				return err301			}302			toUpdate.Labels[labelNameToAddRaw] = fmt.Sprintf("%d", needed)303			allocated = needed304			toUpdate.Labels[labelName] = "true"305			toUpdate.Labels[labelCommonName] = "true"306		} else {307			value := units.BytesSize(float64(selectedNode.GetAvailableStorageCapacity()))308			toUpdate.Labels[labelNameToAdd] = value309			err := b.SetRuntimeMaxMemory(selectedNode.GetName(), value)310			if err != nil {311				return err312			}313			toUpdate.Labels[labelNameToAddRaw] = fmt.Sprintf("%d", selectedNode.GetAvailableStorageCapacity())314			allocated = selectedNode.GetAvailableStorageCapacity()315			toUpdate.Labels[labelName] = "true"316			toUpdate.Labels[labelCommonName] = "true"317		}318		// toUpdate.Labels[labelNameToAdd] = "true"319		err = b.Client.Update(context.TODO(), toUpdate)320		if err != nil {321			b.Log.Error(err, "LabelCachedNodes")322			return err323		}324		return nil325	})326	if err != nil {327		b.Log.Error(err, "LabelCacheNode")328		return allocated, err329	}330	return allocated, nil331}332// Setup the ddc engine333func (b *TemplateEngine) Setup(ctx common.ReconcileRequestContext) (ready bool, err error) {334	var shouldSetupMaster, masterReady bool335	b.Log.V(1).Info("Get", "Runtime", ctx.Runtime)336	b.Log.V(1).Info("Get", "Dataset", ctx.Dataset)337	runtime := ctx.Runtime338	dataset := ctx.Dataset339	// If the dataset condition is created, it means the dataset is already setup340	index, _ := utils.GetDatasetCachedCondition(dataset.Status.CacheStatus.Conditions, data.Ready)341	if index != -1 {342		b.Log.V(1).Info("The runtime is already setup.")343		ready = true344		return ready, nil345	}346	switch runtime.Status.MasterPhase {347	case data.RuntimePhaseNone:348		shouldSetupMaster = true349	default:350		shouldSetupMaster = false351	}352	// 1. Setup Master353	if shouldSetupMaster {354		desiredNum, err := b.SetupMaster()355		if err != nil {356			b.Log.Error(err, "SetupMaster")357			return ready, err358		}359		// 1.1 Update the runtime360		err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {361			runtimeToUpdate, err := utils.GetRuntime(b.Client, b.Config.Name, b.Config.Namespace)362			if err != nil {363				return err364			}365			runtimeToUpdate.Status.MasterPhase = data.RuntimePhaseNotReady366			runtimeToUpdate.Status.DesiredMasterNumberScheduled = desiredNum367			runtimeToUpdate.Status.ValueFileConfigmap = dataset.Name + "-" + b.Type() + "-values"368			if len(runtimeToUpdate.Status.Conditions) == 0 {369				runtimeToUpdate.Status.Conditions = []data.RuntimeCondition{}370			}371			cond := utils.NewRuntimeCondition(data.RuntimeMasterInitialized, data.RuntimeMasterInitializedReason,372				"The master is initialized.", corev1.ConditionTrue)373			runtimeToUpdate.Status.Conditions =374				utils.UpdateRuntimeCondition(runtimeToUpdate.Status.Conditions,375					cond)376			return b.Client.Status().Update(ctx.Context, runtimeToUpdate)377		})378		if err != nil {379			b.Log.Error(err, "Update runtime status")380			return ready, err381		}382		// 1.2 update the status of dataset383		err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {384			datasetToUpdate, err := utils.GetDataset(b.Client, b.Config.Name, b.Config.Namespace)385			if err != nil {386				return err387			}388			datasetToUpdate.Status.Phase = data.PendingDatasetPhase389			if len(datasetToUpdate.Status.CacheStatus.Conditions) == 0 {390				datasetToUpdate.Status.CacheStatus.Conditions = []data.CacheCondition{}391			}392			cond := utils.NewDatasetCachedCondition(data.Planned,393				data.DatasetPlannedReason,394				"The ddc runtime is creating",395				corev1.ConditionTrue)396			datasetToUpdate.Status.CacheStatus.Conditions =397				utils.UpdateDatasetCachedCondition(datasetToUpdate.Status.CacheStatus.Conditions,398					cond)399			// datasetToUpdate.Status.CacheStatus.Conditions = append(datasetToUpdate.Status.CacheStatus.Conditions,400			// 		data.CacheCondition{401			// 			Type: data.Planned,402			// 		})403			return b.Client.Status().Update(ctx.Context, datasetToUpdate)404		})405		if err != nil {406			b.Log.Error(err, "Update dataset status")407			return ready, err408		}409		return ready, nil410	}411	masterReady, err = b.IsMasterReady(runtime)412	if err != nil {413		return ready, err414	}415	if !masterReady {416		return masterReady, err417	}418	// Update the condition of the runtime419	err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {420		runtime, err := utils.GetRuntime(b.Client, b.Config.Name, b.Config.Namespace)421		if err != nil {422			return err423		}424		runtimeToUpdate := runtime.DeepCopy()425		if len(runtimeToUpdate.Status.Conditions) == 0 {426			runtimeToUpdate.Status.Conditions = []data.RuntimeCondition{}427		}428		cond := utils.NewRuntimeCondition(data.RuntimeMasterReady, data.RuntimeMasterReadyReason,429			"The master is ready.", corev1.ConditionTrue)430		runtimeToUpdate.Status.Conditions =431			utils.UpdateRuntimeCondition(runtimeToUpdate.Status.Conditions,432				cond)433		runtimeToUpdate.Status.MasterPhase = data.RuntimePhaseReady434		if !reflect.DeepEqual(runtime.Status, runtimeToUpdate.Status) {435			return b.Client.Status().Update(ctx.Context, runtimeToUpdate)436		}437		return nil438	})439	if err != nil {440		b.Log.Error(err, "Update runtime to master ready")441		return ready, err442	}443	// 2.Check the ufs capacity444	//TODO:(cheyang) sync ufs storage once by now, will be predically in future445	var shouldSetupWorkers bool446	switch runtime.Status.WorkerPhase {447	case data.RuntimePhaseNone:448		shouldSetupWorkers = true449	default:450		shouldSetupWorkers = false451	}452	if shouldSetupWorkers {453		desiredNum, err := b.SetupWorkers(dataset)454		if err != nil {455			b.Log.Error(err, "SetupWorker")456			return ready, err457		}458		err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {459			runtime, err := utils.GetRuntime(b.Client, b.Config.Name, b.Config.Namespace)460			if err != nil {461				return err462			}463			runtimeToUpdate := runtime.DeepCopy()464			runtimeToUpdate.Status.WorkerPhase = data.RuntimePhaseNotReady465			runtimeToUpdate.Status.DesiredWorkerNumberScheduled = desiredNum466			runtimeToUpdate.Status.FusePhase = data.RuntimePhaseNotReady467			runtimeToUpdate.Status.DesiredFuseNumberScheduled = desiredNum468			if len(runtimeToUpdate.Status.Conditions) == 0 {469				runtimeToUpdate.Status.Conditions = []data.RuntimeCondition{}470			}471			cond := utils.NewRuntimeCondition(data.RuntimeWorkersInitialized, data.RuntimeWorkersInitializedReason,472				"The workers are initialized.", corev1.ConditionTrue)473			runtimeToUpdate.Status.Conditions =474				utils.UpdateRuntimeCondition(runtimeToUpdate.Status.Conditions,475					cond)476			fuseCond := utils.NewRuntimeCondition(data.RuntimeFusesInitialized, data.RuntimeFusesInitializedReason,477				"The fuses are initialized.", corev1.ConditionTrue)478			runtimeToUpdate.Status.Conditions =479				utils.UpdateRuntimeCondition(runtimeToUpdate.Status.Conditions,480					fuseCond)481			if !reflect.DeepEqual(runtime.Status, runtimeToUpdate.Status) {482				return b.Client.Status().Update(ctx.Context, runtimeToUpdate)483			}484			return nil485		})486		if err != nil {487			b.Log.Error(err, "Update runtime")488			return ready, err489		}490	}491	runtime, err = utils.GetRuntime(b.Client, b.Config.Name, b.Config.Namespace)492	if err != nil {493		return ready, err494	}495	workerReady, err := b.AreWorkersReady(runtime)496	if err != nil {497		b.Log.Error(err, "Check if the workers are ready")498		return workerReady, err499	}500	if !workerReady {501		return workerReady, err502	}503	err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {504		runtime, err := utils.GetRuntime(b.Client, b.Config.Name, b.Config.Namespace)505		if err != nil {506			return err507		}508		runtimeToUpdate := runtime.DeepCopy()509		if len(runtimeToUpdate.Status.Conditions) == 0 {510			runtimeToUpdate.Status.Conditions = []data.RuntimeCondition{}511		}512		cond := utils.NewRuntimeCondition(data.RuntimeWorkersReady, data.RuntimeWorkersReadyReason,513			"The workers are ready.", corev1.ConditionTrue)514		runtimeToUpdate.Status.Conditions =515			utils.UpdateRuntimeCondition(runtimeToUpdate.Status.Conditions,516				cond)517		fuseCond := utils.NewRuntimeCondition(data.RuntimeFusesReady, data.RuntimeFusesReadyReason,518			"The fuses are ready.", corev1.ConditionTrue)519		runtimeToUpdate.Status.Conditions =520			utils.UpdateRuntimeCondition(runtimeToUpdate.Status.Conditions,521				fuseCond)522		if !reflect.DeepEqual(runtime.Status, runtimeToUpdate.Status) {523			return b.Client.Status().Update(ctx.Context, runtimeToUpdate)524		}525		return nil526	})527	// 4. Setup the init Runtime status528	err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {529		runtime, err := utils.GetRuntime(b.Client, b.Config.Name, b.Config.Namespace)530		if err != nil {531			b.Log.Error(err, "Get Runtime")532			return err533		}534		ready, err = b.UpdateRuntimeStatus(runtime)535		if err != nil {536			b.Log.Error(err, "Update runtime")537			return err538		}539		return nil540	})541	if err != nil {542		b.Log.Error(err, "Update runtime")543		return ready, err544	}545	// 5.Setup the init status of Dataset546	err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {547		dataset, err = utils.GetDataset(b.Client, b.Config.Name, b.Config.Namespace)548		if err != nil {549			b.Log.Error(err, "Get dataset")550			return err551		}552		runtime, err := utils.GetRuntime(b.Client, b.Config.Name, b.Config.Namespace)553		if err != nil {554			return err555		}556		datasetToUpdate := dataset.DeepCopy()557		datasetToUpdate.Status.Phase = data.ReadyDatasetPhase558		cond := utils.NewDatasetCachedCondition(data.Ready, data.DatasetReadyReason,559			"The ddc runtime is ready.",560			corev1.ConditionTrue)...

kit.go

Source:kit.go

...14// ClearScreen imported15var ClearScreen = utils.ClearScreen16// CountSleeper imported17var CountSleeper = utils.CountSleeper18// DefaultBackoff imported19var DefaultBackoff = utils.DefaultBackoff20// Dump imported21var Dump = utils.Dump22// E imported23var E = utils.E24// E1 imported25var E1 = utils.E126// Err imported27var Err = utils.Err28// ErrArg imported29var ErrArg = utils.ErrArg30// ErrInjector imported31type ErrInjector = utils.ErrInjector32// ErrMaxSleepCount imported33var ErrMaxSleepCount = utils.ErrMaxSleepCount...

sleeper.go

Source:sleeper.go

...27		count++28		return nil29	}30}31// DefaultBackoff algorithm: A(n) = A(n-1) * random[1.9, 2.1)32func DefaultBackoff(interval time.Duration) time.Duration {33	scale := 2 + (rand.Float64()-0.5)*0.234	return time.Duration(float64(interval) * scale)35}36// BackoffSleeper returns a sleeper that sleeps in a backoff manner every time get called.37// If algorithm is nil, DefaultBackoff will be used.38// Set interval and maxInterval to the same value to make it a constant interval sleeper.39// If maxInterval is not greater than 0, it will wake immediately.40func BackoffSleeper(init, maxInterval time.Duration, algorithm func(time.Duration) time.Duration) Sleeper {41	if algorithm == nil {42		algorithm = DefaultBackoff43	}44	return func(ctx context.Context) error {45		// wake immediately46		if maxInterval <= 0 {47			return nil48		}49		var interval time.Duration50		if init < maxInterval {51			interval = algorithm(init)52		} else {53			interval = maxInterval54		}55		t := time.NewTicker(interval)56		defer t.Stop()...

DefaultBackoff

Using AI Code Generation

1import (2func main() {3	utils.DefaultBackoff(3, func() error {4		fmt.Println("Hello")5	})6}7import (8func main() {9	utils.DefaultBackoff(3, func() error {10		fmt.Println("Hello")11	})12}13import (14func main() {15	utils.DefaultBackoff(3, func() error {16		fmt.Println("Hello")17	})18}19import (20func main() {21	utils.DefaultBackoff(3, func() error {22		fmt.Println("Hello")23	})24}25import (26func main() {27	utils.DefaultBackoff(3, func() error {28		fmt.Println("Hello")29	})30}31import (32func main() {33	utils.DefaultBackoff(3, func() error {34		fmt.Println("Hello")35	})36}37import (38func main() {39	utils.DefaultBackoff(3, func() error {40		fmt.Println("Hello")41	})42}43import (44func main() {45	utils.DefaultBackoff(3, func() error {46		fmt.Println("Hello")47	})48}

DefaultBackoff

Using AI Code Generation

1import (2func main() {3	var backoff = utils.DefaultBackoff()4	err := backoff.Retry(func() error {5		fmt.Println("I am retrying")6	})

DefaultBackoff

Using AI Code Generation

1import (2func main() {3	utils.DefaultBackoff(func() error {4		fmt.Println("DefaultBackoff")5	})6	utils.DefaultBackoff(func() error {7		fmt.Println("DefaultBackoff")8		return fmt.Errorf("error")9	})10	utils.DefaultBackoff(func() error {11		fmt.Println("DefaultBackoff")12	}, 5, 100*time.Millisecond, 10*time.Second)13}

DefaultBackoff

Using AI Code Generation

1func main() {2    backoff := utils.DefaultBackoff()3    backoff2 := utils.Backoff()4    fmt.Println(backoff)5    fmt.Println(backoff2)6}7{1 2 0 0 0 0 0 0 0 0 0}8{1 2 0 0 0 0 0 0 0 0 0}9func main() {10    backoff := utils.DefaultBackoff()11    fmt.Println(backoff)12    fmt.Println(backoff)13}14{1 2 0 0 0 0 0 0 0 0 0}15{1 2 5 0 0 0 0 0 0 0 0}16func main() {17    backoff := utils.DefaultBackoff()18    fmt.Println(backoff)19    fmt.Println(backoff)20    fmt.Println(backoff)21}22{1 2 0 0 0 0 0 0 0 0 0}23{1 2 5 0 0 0 0 0 0 0 0}24{1 2 10 0 0 0 0 0 0 0 0}

DefaultBackoff

Using AI Code Generation

1import (2func main() {3	fmt.Println("DefaultBackoff")4	fmt.Println(utils.DefaultBackoff(2, 2))5}6import (7func main() {8	fmt.Println("DefaultBackoff")9	fmt.Println(utils.DefaultBackoff(2, 3))10}11import (12func main() {13	fmt.Println("DefaultBackoff")14	fmt.Println(utils.DefaultBackoff(2, 4))15}16import (17func main() {18	fmt.Println("DefaultBackoff")19	fmt.Println(utils.DefaultBackoff(2, 5))20}21import (22func main() {23	fmt.Println("DefaultBackoff")24	fmt.Println(utils.DefaultBackoff(2, 6))25}26import (27func main() {28	fmt.Println("DefaultBackoff")29	fmt.Println(utils.DefaultBackoff(2, 7))30}31import (32func main() {33	fmt.Println("DefaultBackoff")34	fmt.Println(utils.DefaultBackoff(2, 8))35}36import (37func main() {38	fmt.Println("DefaultBackoff")39	fmt.Println(utils.DefaultBackoff(2, 9))40}

DefaultBackoff

Using AI Code Generation

1import (2func main() {3        utils.DefaultBackoff(5 * time.Second)4        fmt.Println("Application is backoffed")5}6import (7func main() {8        utils.DefaultBackoff(10 * time.Second)9        fmt.Println("Application is backoffed")10}11import (12func main() {13        utils.DefaultBackoff(20 * time.Second)14        fmt.Println("Application is backoffed")15}16import (17func main() {18        utils.DefaultBackoff(30 * time.Second)19        fmt.Println("Application is backoffed")20}21import (22func main() {23        utils.DefaultBackoff(40 * time.Second)24        fmt.Println("Application is backoffed")25}26import (

DefaultBackoff

Using AI Code Generation

1import (2func main() {3    backoff := utils.DefaultBackoff()4    err := backoff.Retry(func() error {5    })6    if err != nil {7    }8}9import (10func main() {11    backoff := utils.NewBackoff(utils.WithMaxRetries(10), utils.WithMaxDelay(10))12    err := backoff.Retry(func() error {13    })14    if err != nil {15    }16}17import (18func main() {19    backoff := utils.NewBackoff(utils.WithMaxRetries(10), utils.WithMaxDelay(10))20    err := backoff.Retry(func() error {21    })22    if err != nil {23    }24}25import (26func main() {27    backoff := utils.NewBackoff(utils.WithMaxRetries(10), utils.WithMaxDelay(10))

DefaultBackoff

Using AI Code Generation

1import (2func main() {3	utils.DefaultBackoff()4	fmt.Println("Main method")5}6import (7func DefaultBackoff() {8	backoff := utils.NewDefaultBackoff()9	for backoff.Attempt() {10		fmt.Println("Attempt: ", backoff.AttemptNum())11		time.Sleep(backoff.Delay())12	}13}14import (15type Backoff struct {16}17func NewDefaultBackoff() *Backoff {18	return &Backoff{19	}20}21func NewBackoff(initialDelay, maxDelay time.Duration, maxRetries int) *Backoff {22	return &Backoff{

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