import { WorkerChoiceStrategiesContext } from './selection-strategies/worker-choice-strategies-context.js'
import {
checkFilePath,
+ checkValidPriority,
checkValidTasksQueueOptions,
checkValidWorkerChoiceStrategy,
getDefaultTasksQueueOptions,
*
* When we receive a message from the worker, we get a map entry with the promise resolve/reject bound to the message id.
*/
- protected promiseResponseMap: Map<string, PromiseResponseWrapper<Response>> =
- new Map<string, PromiseResponseWrapper<Response>>()
+ protected promiseResponseMap: Map<
+ `${string}-${string}-${string}-${string}-${string}`,
+ PromiseResponseWrapper<Response>
+ > = new Map<
+ `${string}-${string}-${string}-${string}-${string}`,
+ PromiseResponseWrapper<Response>
+ >()
/**
* Worker choice strategies context referencing worker choice algorithms implementation.
/**
* The start timestamp of the pool.
*/
- private readonly startTimestamp
+ private startTimestamp?: number
/**
* Constructs a new poolifier pool.
this.enqueueTask = this.enqueueTask.bind(this)
if (this.opts.enableEvents === true) {
- this.initializeEventEmitter()
+ this.initEventEmitter()
}
this.workerChoiceStrategiesContext = new WorkerChoiceStrategiesContext<
Worker,
if (this.opts.startWorkers === true) {
this.start()
}
-
- this.startTimestamp = performance.now()
}
private checkPoolType (): void {
}
}
- private initializeEventEmitter (): void {
+ private initEventEmitter (): void {
this.emitter = new EventEmitterAsyncResource({
name: `poolifier:${this.type}-${this.worker}-pool`
})
)
}),
busyWorkerNodes: this.workerNodes.reduce(
- (accumulator, _workerNode, workerNodeKey) =>
+ (accumulator, _, workerNodeKey) =>
this.isWorkerNodeBusy(workerNodeKey) ? accumulator + 1 : accumulator,
0
),
minimum: round(
min(
...this.workerNodes.map(
- workerNode => workerNode.usage.runTime.minimum ?? Infinity
+ workerNode =>
+ workerNode.usage.runTime.minimum ?? Number.POSITIVE_INFINITY
)
)
),
maximum: round(
max(
...this.workerNodes.map(
- workerNode => workerNode.usage.runTime.maximum ?? -Infinity
+ workerNode =>
+ workerNode.usage.runTime.maximum ?? Number.NEGATIVE_INFINITY
)
)
),
minimum: round(
min(
...this.workerNodes.map(
- workerNode => workerNode.usage.waitTime.minimum ?? Infinity
+ workerNode =>
+ workerNode.usage.waitTime.minimum ?? Number.POSITIVE_INFINITY
)
)
),
maximum: round(
max(
...this.workerNodes.map(
- workerNode => workerNode.usage.waitTime.maximum ?? -Infinity
+ workerNode =>
+ workerNode.usage.waitTime.maximum ?? Number.NEGATIVE_INFINITY
)
)
),
)
})
}
+ }),
+ ...(this.workerChoiceStrategiesContext?.getTaskStatisticsRequirements()
+ .elu.aggregate === true && {
+ elu: {
+ idle: {
+ minimum: round(
+ min(
+ ...this.workerNodes.map(
+ workerNode =>
+ workerNode.usage.elu.idle.minimum ??
+ Number.POSITIVE_INFINITY
+ )
+ )
+ ),
+ maximum: round(
+ max(
+ ...this.workerNodes.map(
+ workerNode =>
+ workerNode.usage.elu.idle.maximum ??
+ Number.NEGATIVE_INFINITY
+ )
+ )
+ ),
+ ...(this.workerChoiceStrategiesContext.getTaskStatisticsRequirements()
+ .elu.average && {
+ average: round(
+ average(
+ this.workerNodes.reduce<number[]>(
+ (accumulator, workerNode) =>
+ accumulator.concat(workerNode.usage.elu.idle.history),
+ []
+ )
+ )
+ )
+ }),
+ ...(this.workerChoiceStrategiesContext.getTaskStatisticsRequirements()
+ .elu.median && {
+ median: round(
+ median(
+ this.workerNodes.reduce<number[]>(
+ (accumulator, workerNode) =>
+ accumulator.concat(workerNode.usage.elu.idle.history),
+ []
+ )
+ )
+ )
+ })
+ },
+ active: {
+ minimum: round(
+ min(
+ ...this.workerNodes.map(
+ workerNode =>
+ workerNode.usage.elu.active.minimum ??
+ Number.POSITIVE_INFINITY
+ )
+ )
+ ),
+ maximum: round(
+ max(
+ ...this.workerNodes.map(
+ workerNode =>
+ workerNode.usage.elu.active.maximum ??
+ Number.NEGATIVE_INFINITY
+ )
+ )
+ ),
+ ...(this.workerChoiceStrategiesContext.getTaskStatisticsRequirements()
+ .elu.average && {
+ average: round(
+ average(
+ this.workerNodes.reduce<number[]>(
+ (accumulator, workerNode) =>
+ accumulator.concat(workerNode.usage.elu.active.history),
+ []
+ )
+ )
+ )
+ }),
+ ...(this.workerChoiceStrategiesContext.getTaskStatisticsRequirements()
+ .elu.median && {
+ median: round(
+ median(
+ this.workerNodes.reduce<number[]>(
+ (accumulator, workerNode) =>
+ accumulator.concat(workerNode.usage.elu.active.history),
+ []
+ )
+ )
+ )
+ })
+ },
+ utilization: {
+ average: round(
+ average(
+ this.workerNodes.map(
+ workerNode => workerNode.usage.elu.utilization ?? 0
+ )
+ )
+ ),
+ median: round(
+ median(
+ this.workerNodes.map(
+ workerNode => workerNode.usage.elu.utilization ?? 0
+ )
+ )
+ )
+ }
+ }
})
}
}
* @returns The pool utilization.
*/
private get utilization (): number {
+ if (this.startTimestamp == null) {
+ return 0
+ }
const poolTimeCapacity =
(performance.now() - this.startTimestamp) *
(this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers)
workerChoiceStrategy: WorkerChoiceStrategy,
workerChoiceStrategyOptions?: WorkerChoiceStrategyOptions
): void {
+ let requireSync = false
checkValidWorkerChoiceStrategy(workerChoiceStrategy)
- this.opts.workerChoiceStrategy = workerChoiceStrategy
- this.workerChoiceStrategiesContext?.setDefaultWorkerChoiceStrategy(
- this.opts.workerChoiceStrategy,
- workerChoiceStrategyOptions
- )
- for (const [workerNodeKey] of this.workerNodes.entries()) {
- this.sendStatisticsMessageToWorker(workerNodeKey)
+ if (workerChoiceStrategyOptions != null) {
+ requireSync = !this.setWorkerChoiceStrategyOptions(
+ workerChoiceStrategyOptions
+ )
+ }
+ if (workerChoiceStrategy !== this.opts.workerChoiceStrategy) {
+ this.opts.workerChoiceStrategy = workerChoiceStrategy
+ this.workerChoiceStrategiesContext?.setDefaultWorkerChoiceStrategy(
+ this.opts.workerChoiceStrategy,
+ this.opts.workerChoiceStrategyOptions
+ )
+ requireSync = true
+ }
+ if (requireSync) {
+ this.workerChoiceStrategiesContext?.syncWorkerChoiceStrategies(
+ this.getWorkerChoiceStrategies(),
+ this.opts.workerChoiceStrategyOptions
+ )
+ for (const workerNodeKey of this.workerNodes.keys()) {
+ this.sendStatisticsMessageToWorker(workerNodeKey)
+ }
}
}
/** @inheritDoc */
public setWorkerChoiceStrategyOptions (
workerChoiceStrategyOptions: WorkerChoiceStrategyOptions | undefined
- ): void {
+ ): boolean {
this.checkValidWorkerChoiceStrategyOptions(workerChoiceStrategyOptions)
if (workerChoiceStrategyOptions != null) {
this.opts.workerChoiceStrategyOptions = workerChoiceStrategyOptions
+ this.workerChoiceStrategiesContext?.setOptions(
+ this.opts.workerChoiceStrategyOptions
+ )
+ this.workerChoiceStrategiesContext?.syncWorkerChoiceStrategies(
+ this.getWorkerChoiceStrategies(),
+ this.opts.workerChoiceStrategyOptions
+ )
+ for (const workerNodeKey of this.workerNodes.keys()) {
+ this.sendStatisticsMessageToWorker(workerNodeKey)
+ }
+ return true
}
- this.workerChoiceStrategiesContext?.setOptions(
- this.opts.workerChoiceStrategyOptions
- )
+ return false
}
/** @inheritDoc */
}
private setTaskStealing (): void {
- for (const [workerNodeKey] of this.workerNodes.entries()) {
+ for (const workerNodeKey of this.workerNodes.keys()) {
this.workerNodes[workerNodeKey].on('idle', this.handleWorkerNodeIdleEvent)
}
}
private unsetTaskStealing (): void {
- for (const [workerNodeKey] of this.workerNodes.entries()) {
+ for (const workerNodeKey of this.workerNodes.keys()) {
this.workerNodes[workerNodeKey].off(
'idle',
this.handleWorkerNodeIdleEvent
}
private setTasksStealingOnBackPressure (): void {
- for (const [workerNodeKey] of this.workerNodes.entries()) {
+ for (const workerNodeKey of this.workerNodes.keys()) {
this.workerNodes[workerNodeKey].on(
'backPressure',
this.handleWorkerNodeBackPressureEvent
}
private unsetTasksStealingOnBackPressure (): void {
- for (const [workerNodeKey] of this.workerNodes.entries()) {
+ for (const workerNodeKey of this.workerNodes.keys()) {
this.workerNodes[workerNodeKey].off(
'backPressure',
this.handleWorkerNodeBackPressureEvent
}
}
}
- for (const [workerNodeKey] of this.workerNodes.entries()) {
+ for (const workerNodeKey of this.workerNodes.keys()) {
this.registerWorkerMessageListener(
workerNodeKey,
taskFunctionOperationsListener
/** @inheritDoc */
public hasTaskFunction (name: string): boolean {
- for (const workerNode of this.workerNodes) {
- if (
- Array.isArray(workerNode.info.taskFunctionsProperties) &&
- workerNode.info.taskFunctionsProperties.some(
- taskFunctionProperties => taskFunctionProperties.name === name
- )
- ) {
- return true
- }
- }
- return false
+ return this.listTaskFunctionsProperties().some(
+ taskFunctionProperties => taskFunctionProperties.name === name
+ )
}
/** @inheritDoc */
if (typeof fn.taskFunction !== 'function') {
throw new TypeError('taskFunction property must be a function')
}
+ checkValidPriority(fn.priority)
+ checkValidWorkerChoiceStrategy(fn.strategy)
const opResult = await this.sendTaskFunctionOperationToWorkers({
taskFunctionOperation: 'add',
taskFunctionProperties: buildTaskFunctionProperties(name, fn),
taskFunction: fn.taskFunction.toString()
})
this.taskFunctions.set(name, fn)
+ this.workerChoiceStrategiesContext?.syncWorkerChoiceStrategies(
+ this.getWorkerChoiceStrategies()
+ )
+ for (const workerNodeKey of this.workerNodes.keys()) {
+ this.sendStatisticsMessageToWorker(workerNodeKey)
+ }
return opResult
}
this.taskFunctions.get(name)
)
})
- this.deleteTaskFunctionWorkerUsages(name)
+ for (const workerNode of this.workerNodes) {
+ workerNode.deleteTaskFunctionWorkerUsage(name)
+ }
this.taskFunctions.delete(name)
+ this.workerChoiceStrategiesContext?.syncWorkerChoiceStrategies(
+ this.getWorkerChoiceStrategies()
+ )
+ for (const workerNodeKey of this.workerNodes.keys()) {
+ this.sendStatisticsMessageToWorker(workerNodeKey)
+ }
return opResult
}
}
/**
- * Gets task function strategy, if any.
+ * Gets task function worker choice strategy, if any.
*
* @param name - The task function name.
* @returns The task function worker choice strategy if the task function worker choice strategy is defined, `undefined` otherwise.
*/
- private readonly getTaskFunctionWorkerWorkerChoiceStrategy = (
+ private readonly getTaskFunctionWorkerChoiceStrategy = (
name?: string
): WorkerChoiceStrategy | undefined => {
- if (name != null) {
- return this.listTaskFunctionsProperties().find(
- (taskFunctionProperties: TaskFunctionProperties) =>
- taskFunctionProperties.name === name
- )?.strategy
+ name = name ?? DEFAULT_TASK_NAME
+ const taskFunctionsProperties = this.listTaskFunctionsProperties()
+ if (name === DEFAULT_TASK_NAME) {
+ name = taskFunctionsProperties[1]?.name
+ }
+ return taskFunctionsProperties.find(
+ (taskFunctionProperties: TaskFunctionProperties) =>
+ taskFunctionProperties.name === name
+ )?.strategy
+ }
+
+ /**
+ * Gets worker node task function worker choice strategy, if any.
+ *
+ * @param workerNodeKey - The worker node key.
+ * @param name - The task function name.
+ * @returns The worker node task function worker choice strategy if the worker node task function worker choice strategy is defined, `undefined` otherwise.
+ */
+ private readonly getWorkerNodeTaskFunctionWorkerChoiceStrategy = (
+ workerNodeKey: number,
+ name?: string
+ ): WorkerChoiceStrategy | undefined => {
+ const workerInfo = this.getWorkerInfo(workerNodeKey)
+ if (workerInfo == null) {
+ return
+ }
+ name = name ?? DEFAULT_TASK_NAME
+ if (name === DEFAULT_TASK_NAME) {
+ name = workerInfo.taskFunctionsProperties?.[1]?.name
+ }
+ return workerInfo.taskFunctionsProperties?.find(
+ (taskFunctionProperties: TaskFunctionProperties) =>
+ taskFunctionProperties.name === name
+ )?.strategy
+ }
+
+ /**
+ * Gets worker node task function priority, if any.
+ *
+ * @param workerNodeKey - The worker node key.
+ * @param name - The task function name.
+ * @returns The worker node task function priority if the worker node task function priority is defined, `undefined` otherwise.
+ */
+ private readonly getWorkerNodeTaskFunctionPriority = (
+ workerNodeKey: number,
+ name?: string
+ ): number | undefined => {
+ const workerInfo = this.getWorkerInfo(workerNodeKey)
+ if (workerInfo == null) {
+ return
}
+ name = name ?? DEFAULT_TASK_NAME
+ if (name === DEFAULT_TASK_NAME) {
+ name = workerInfo.taskFunctionsProperties?.[1]?.name
+ }
+ return workerInfo.taskFunctionsProperties?.find(
+ (taskFunctionProperties: TaskFunctionProperties) =>
+ taskFunctionProperties.name === name
+ )?.priority
}
+ /**
+ * Gets the worker choice strategies registered in this pool.
+ *
+ * @returns The worker choice strategies.
+ */
+ private readonly getWorkerChoiceStrategies =
+ (): Set<WorkerChoiceStrategy> => {
+ return new Set([
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ this.opts.workerChoiceStrategy!,
+ ...(this.listTaskFunctionsProperties()
+ .map(
+ (taskFunctionProperties: TaskFunctionProperties) =>
+ taskFunctionProperties.strategy
+ )
+ .filter(
+ (strategy: WorkerChoiceStrategy | undefined) => strategy != null
+ ) as WorkerChoiceStrategy[])
+ ])
+ }
+
/** @inheritDoc */
public async setDefaultTaskFunction (name: string): Promise<boolean> {
return await this.sendTaskFunctionOperationToWorkers({
})
}
- private deleteTaskFunctionWorkerUsages (name: string): void {
- for (const workerNode of this.workerNodes) {
- workerNode.deleteTaskFunctionWorkerUsage(name)
- }
- }
-
private shallExecuteTask (workerNodeKey: number): boolean {
return (
this.tasksQueueSize(workerNodeKey) === 0 &&
return
}
const timestamp = performance.now()
- const workerNodeKey = this.chooseWorkerNode(
- this.getTaskFunctionWorkerWorkerChoiceStrategy(name)
- )
+ const workerNodeKey = this.chooseWorkerNode(name)
const task: Task<Data> = {
name: name ?? DEFAULT_TASK_NAME,
// eslint-disable-next-line @typescript-eslint/consistent-type-assertions
data: data ?? ({} as Data),
+ priority: this.getWorkerNodeTaskFunctionPriority(workerNodeKey, name),
+ strategy: this.getWorkerNodeTaskFunctionWorkerChoiceStrategy(
+ workerNodeKey,
+ name
+ ),
transferList,
timestamp,
taskId: randomUUID()
/**
* Starts the minimum number of workers.
*/
- private startMinimumNumberOfWorkers (): void {
+ private startMinimumNumberOfWorkers (initWorkerNodeUsage = false): void {
this.startingMinimumNumberOfWorkers = true
while (
this.workerNodes.reduce(
0
) < this.minimumNumberOfWorkers
) {
- this.createAndSetupWorkerNode()
+ const workerNodeKey = this.createAndSetupWorkerNode()
+ initWorkerNodeUsage &&
+ this.initWorkerNodeUsage(this.workerNodes[workerNodeKey])
}
this.startingMinimumNumberOfWorkers = false
}
}
this.starting = true
this.startMinimumNumberOfWorkers()
+ this.startTimestamp = performance.now()
this.starting = false
this.started = true
}
}
this.destroying = true
await Promise.all(
- this.workerNodes.map(async (_workerNode, workerNodeKey) => {
+ this.workerNodes.map(async (_, workerNodeKey) => {
await this.destroyWorkerNode(workerNodeKey)
})
)
this.emitter?.emit(PoolEvents.destroy, this.info)
this.emitter?.emitDestroy()
this.readyEventEmitted = false
+ delete this.startTimestamp
this.destroying = false
this.started = false
}
workerNodeKey: number,
message: MessageValue<Response>
): void {
- let needWorkerChoiceStrategyUpdate = false
+ let needWorkerChoiceStrategiesUpdate = false
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (this.workerNodes[workerNodeKey]?.usage != null) {
const workerUsage = this.workerNodes[workerNodeKey].usage
workerUsage,
message
)
- needWorkerChoiceStrategyUpdate = true
+ needWorkerChoiceStrategiesUpdate = true
}
if (
this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) &&
taskFunctionWorkerUsage,
message
)
- needWorkerChoiceStrategyUpdate = true
+ needWorkerChoiceStrategiesUpdate = true
}
- if (needWorkerChoiceStrategyUpdate) {
+ if (needWorkerChoiceStrategiesUpdate) {
this.workerChoiceStrategiesContext?.update(workerNodeKey)
}
}
/**
* Chooses a worker node for the next task.
*
- * @param workerChoiceStrategy - The worker choice strategy.
+ * @param name - The task function name.
* @returns The chosen worker node key
*/
- private chooseWorkerNode (
- workerChoiceStrategy?: WorkerChoiceStrategy
- ): number {
+ private chooseWorkerNode (name?: string): number {
if (this.shallCreateDynamicWorker()) {
const workerNodeKey = this.createAndSetupDynamicWorkerNode()
if (
}
}
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- return this.workerChoiceStrategiesContext!.execute(workerChoiceStrategy)
+ return this.workerChoiceStrategiesContext!.execute(
+ this.getTaskFunctionWorkerChoiceStrategy(name)
+ )
}
/**
transferList?: readonly TransferListItem[]
): void
+ /**
+ * Initializes the worker node usage with sensible default values gathered during runtime.
+ *
+ * @param workerNode - The worker node.
+ */
+ private initWorkerNodeUsage (workerNode: IWorkerNode<Worker, Data>): void {
+ if (
+ this.workerChoiceStrategiesContext?.getTaskStatisticsRequirements()
+ .runTime.aggregate === true
+ ) {
+ workerNode.usage.runTime.aggregate = min(
+ ...this.workerNodes.map(
+ workerNode =>
+ workerNode.usage.runTime.aggregate ?? Number.POSITIVE_INFINITY
+ )
+ )
+ }
+ if (
+ this.workerChoiceStrategiesContext?.getTaskStatisticsRequirements()
+ .waitTime.aggregate === true
+ ) {
+ workerNode.usage.waitTime.aggregate = min(
+ ...this.workerNodes.map(
+ workerNode =>
+ workerNode.usage.waitTime.aggregate ?? Number.POSITIVE_INFINITY
+ )
+ )
+ }
+ if (
+ this.workerChoiceStrategiesContext?.getTaskStatisticsRequirements().elu
+ .aggregate === true
+ ) {
+ workerNode.usage.elu.active.aggregate = min(
+ ...this.workerNodes.map(
+ workerNode =>
+ workerNode.usage.elu.active.aggregate ?? Number.POSITIVE_INFINITY
+ )
+ )
+ }
+ }
+
/**
* Creates a new, completely set up worker node.
*
if (workerNode.info.dynamic) {
this.createAndSetupDynamicWorkerNode()
} else if (!this.startingMinimumNumberOfWorkers) {
- this.startMinimumNumberOfWorkers()
+ this.startMinimumNumberOfWorkers(true)
}
}
if (
!this.startingMinimumNumberOfWorkers &&
!this.destroying
) {
- this.startMinimumNumberOfWorkers()
+ this.startMinimumNumberOfWorkers(true)
}
})
const workerNodeKey = this.addWorkerNode(workerNode)
const localWorkerNodeKey = this.getWorkerNodeKeyByWorkerId(
message.workerId
)
+ const workerInfo = this.getWorkerInfo(localWorkerNodeKey)
const workerUsage = this.workerNodes[localWorkerNodeKey]?.usage
// Kill message received from worker
if (
((this.opts.enableTasksQueue === false &&
workerUsage.tasks.executing === 0) ||
(this.opts.enableTasksQueue === true &&
+ workerInfo != null &&
+ !workerInfo.stealing &&
workerUsage.tasks.executing === 0 &&
this.tasksQueueSize(localWorkerNodeKey) === 0)))
) {
) {
workerNode.info.ready = true
}
+ this.initWorkerNodeUsage(workerNode)
this.checkAndEmitDynamicWorkerCreationEvents()
return workerNodeKey
}
}
}
- private redistributeQueuedTasks (workerNodeKey: number): void {
- if (workerNodeKey === -1 || this.cannotStealTask()) {
+ private redistributeQueuedTasks (sourceWorkerNodeKey: number): void {
+ if (sourceWorkerNodeKey === -1 || this.cannotStealTask()) {
return
}
- while (this.tasksQueueSize(workerNodeKey) > 0) {
+ while (this.tasksQueueSize(sourceWorkerNodeKey) > 0) {
const destinationWorkerNodeKey = this.workerNodes.reduce(
(minWorkerNodeKey, workerNode, workerNodeKey, workerNodes) => {
- return workerNode.info.ready &&
+ return sourceWorkerNodeKey !== workerNodeKey &&
+ workerNode.info.ready &&
workerNode.usage.tasks.queued <
workerNodes[minWorkerNodeKey].usage.tasks.queued
? workerNodeKey
this.handleTask(
destinationWorkerNodeKey,
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- this.dequeueTask(workerNodeKey)!
+ this.dequeueTask(sourceWorkerNodeKey)!
)
}
}
this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) &&
workerNode.getTaskFunctionWorkerUsage(taskName) != null
) {
- const taskFunctionWorkerUsage =
- // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- workerNode.getTaskFunctionWorkerUsage(taskName)!
- ++taskFunctionWorkerUsage.tasks.stolen
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ ++workerNode.getTaskFunctionWorkerUsage(taskName)!.tasks.stolen
}
}
private updateTaskSequentiallyStolenStatisticsWorkerUsage (
- workerNodeKey: number
+ workerNodeKey: number,
+ taskName: string,
+ previousTaskName?: string
): void {
const workerNode = this.workerNodes[workerNodeKey]
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (workerNode?.usage != null) {
++workerNode.usage.tasks.sequentiallyStolen
}
- }
-
- private updateTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage (
- workerNodeKey: number,
- taskName: string
- ): void {
- const workerNode = this.workerNodes[workerNodeKey]
if (
this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) &&
workerNode.getTaskFunctionWorkerUsage(taskName) != null
const taskFunctionWorkerUsage =
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
workerNode.getTaskFunctionWorkerUsage(taskName)!
- ++taskFunctionWorkerUsage.tasks.sequentiallyStolen
+ if (
+ taskFunctionWorkerUsage.tasks.sequentiallyStolen === 0 ||
+ (previousTaskName != null &&
+ previousTaskName === taskName &&
+ taskFunctionWorkerUsage.tasks.sequentiallyStolen > 0)
+ ) {
+ ++taskFunctionWorkerUsage.tasks.sequentiallyStolen
+ } else if (taskFunctionWorkerUsage.tasks.sequentiallyStolen > 0) {
+ taskFunctionWorkerUsage.tasks.sequentiallyStolen = 0
+ }
}
}
private resetTaskSequentiallyStolenStatisticsWorkerUsage (
- workerNodeKey: number
+ workerNodeKey: number,
+ taskName: string
): void {
const workerNode = this.workerNodes[workerNodeKey]
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (workerNode?.usage != null) {
workerNode.usage.tasks.sequentiallyStolen = 0
}
- }
-
- private resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage (
- workerNodeKey: number,
- taskName: string
- ): void {
- const workerNode = this.workerNodes[workerNodeKey]
if (
this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) &&
workerNode.getTaskFunctionWorkerUsage(taskName) != null
) {
- const taskFunctionWorkerUsage =
- // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- workerNode.getTaskFunctionWorkerUsage(taskName)!
- taskFunctionWorkerUsage.tasks.sequentiallyStolen = 0
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ workerNode.getTaskFunctionWorkerUsage(
+ taskName
+ )!.tasks.sequentiallyStolen = 0
}
}
)
}
const workerInfo = this.getWorkerInfo(workerNodeKey)
+ if (workerInfo == null) {
+ throw new Error(
+ `Worker node with key '${workerNodeKey}' not found in pool`
+ )
+ }
if (
this.cannotStealTask() ||
(this.info.stealingWorkerNodes ?? 0) >
Math.floor(this.workerNodes.length / 2)
) {
- if (workerInfo != null && previousStolenTask != null) {
+ if (previousStolenTask != null) {
workerInfo.stealing = false
+ this.resetTaskSequentiallyStolenStatisticsWorkerUsage(
+ workerNodeKey,
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ previousStolenTask.name!
+ )
}
return
}
const workerNodeTasksUsage = this.workerNodes[workerNodeKey].usage.tasks
if (
- workerInfo != null &&
previousStolenTask != null &&
- workerNodeTasksUsage.sequentiallyStolen > 0 &&
(workerNodeTasksUsage.executing > 0 ||
this.tasksQueueSize(workerNodeKey) > 0)
) {
workerInfo.stealing = false
- // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- for (const taskFunctionProperties of workerInfo.taskFunctionsProperties!) {
- this.resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage(
- workerNodeKey,
- taskFunctionProperties.name
- )
- }
- this.resetTaskSequentiallyStolenStatisticsWorkerUsage(workerNodeKey)
- return
- }
- if (workerInfo == null) {
- throw new Error(
- `Worker node with key '${workerNodeKey}' not found in pool`
+ this.resetTaskSequentiallyStolenStatisticsWorkerUsage(
+ workerNodeKey,
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ previousStolenTask.name!
)
+ return
}
workerInfo.stealing = true
const stolenTask = this.workerNodeStealTask(workerNodeKey)
- if (
- this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) &&
- stolenTask != null
- ) {
- // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- const taskFunctionTasksWorkerUsage = this.workerNodes[
- workerNodeKey
+ if (stolenTask != null) {
+ this.updateTaskSequentiallyStolenStatisticsWorkerUsage(
+ workerNodeKey,
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- ].getTaskFunctionWorkerUsage(stolenTask.name!)!.tasks
- if (
- taskFunctionTasksWorkerUsage.sequentiallyStolen === 0 ||
- (previousStolenTask != null &&
- previousStolenTask.name === stolenTask.name &&
- taskFunctionTasksWorkerUsage.sequentiallyStolen > 0)
- ) {
- this.updateTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage(
- workerNodeKey,
- // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- stolenTask.name!
- )
- } else {
- this.resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage(
- workerNodeKey,
- // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- stolenTask.name!
- )
- }
+ stolenTask.name!,
+ previousStolenTask?.name
+ )
}
sleep(exponentialDelay(workerNodeTasksUsage.sequentiallyStolen))
.then(() => {
)
if (sourceWorkerNode != null) {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- const task = sourceWorkerNode.popTask()!
+ const task = sourceWorkerNode.dequeueLastPrioritizedTask()!
this.handleTask(workerNodeKey, task)
- this.updateTaskSequentiallyStolenStatisticsWorkerUsage(workerNodeKey)
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
this.updateTaskStolenStatisticsWorkerUsage(workerNodeKey, task.name!)
return task
): void => {
if (
this.cannotStealTask() ||
+ this.hasBackPressure() ||
(this.info.stealingWorkerNodes ?? 0) >
Math.floor(this.workerNodes.length / 2)
) {
return
}
- const { workerId } = eventDetail
const sizeOffset = 1
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
if (this.opts.tasksQueueOptions!.size! <= sizeOffset) {
return
}
+ const { workerId } = eventDetail
const sourceWorkerNode =
this.workerNodes[this.getWorkerNodeKeyByWorkerId(workerId)]
const workerNodes = this.workerNodes
}
workerInfo.stealing = true
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
- const task = sourceWorkerNode.popTask()!
+ const task = sourceWorkerNode.dequeueLastPrioritizedTask()!
this.handleTask(workerNodeKey, task)
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
this.updateTaskStolenStatisticsWorkerUsage(workerNodeKey, task.name!)
this.handleWorkerReadyResponse(message)
} else if (taskFunctionsProperties != null) {
// Task function properties message received from worker
- const workerInfo = this.getWorkerInfo(
- this.getWorkerNodeKeyByWorkerId(workerId)
- )
+ const workerNodeKey = this.getWorkerNodeKeyByWorkerId(workerId)
+ const workerInfo = this.getWorkerInfo(workerNodeKey)
if (workerInfo != null) {
workerInfo.taskFunctionsProperties = taskFunctionsProperties
+ this.sendStatisticsMessageToWorker(workerNodeKey)
}
} else if (taskId != null) {
// Task execution response received from worker
if (ready == null || !ready) {
throw new Error(`Worker ${workerId} failed to initialize`)
}
- const workerNode =
- this.workerNodes[this.getWorkerNodeKeyByWorkerId(workerId)]
+ const workerNodeKey = this.getWorkerNodeKeyByWorkerId(workerId)
+ const workerNode = this.workerNodes[workerNodeKey]
workerNode.info.ready = ready
workerNode.info.taskFunctionsProperties = taskFunctionsProperties
+ this.sendStatisticsMessageToWorker(workerNodeKey)
this.checkAndEmitReadyEvent()
}
this.opts.tasksQueueOptions?.size ??
getDefaultTasksQueueOptions(
this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers
- ).size
+ ).size,
+ tasksQueueBucketSize:
+ (this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers) * 2
}
)
// Flag the worker node as ready at pool startup.
}
private flushTasksQueues (): void {
- for (const [workerNodeKey] of this.workerNodes.entries()) {
+ for (const workerNodeKey of this.workerNodes.keys()) {
this.flushTasksQueue(workerNodeKey)
}
}
repositories / poolifier.git / blobdiff