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poolifier

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poolifier - npm Package Compare versions

Comparing version 2.6.1 to 2.6.2

2

./lib/index.js

@@ -1,1 +0,1 @@

"use strict";var e=require("node:events"),t=require("node:cluster"),r=require("node:crypto"),s=require("node:perf_hooks"),i=require("node:os"),o=require("node:worker_threads"),a=require("node:async_hooks");const n=Object.freeze({fixed:"fixed",dynamic:"dynamic"}),h=Object.freeze({cluster:"cluster",thread:"thread"});class u extends e{}const k=Object.freeze({full:"full",busy:"busy",error:"error",taskError:"taskError"}),c=Object.freeze((()=>{})),d={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},l=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},g=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),m=Object.freeze({SOFT:"SOFT",HARD:"HARD"});class p extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...r){let s;return arguments.length>=3&&void 0!==t?(s=super.splice(e,t),this.push(...r)):s=2===arguments.length?super.splice(e,t):super.splice(e),s}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class w{items;head;tail;max;constructor(){this.items={},this.head=0,this.tail=0,this.max=0}get size(){return this.tail-this.head}get maxSize(){return this.max}enqueue(e){return this.items[this.tail]=e,this.tail++,this.size>this.max&&(this.max=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.head];return delete this.items[this.head],this.head++,this.head===this.tail&&(this.head=0,this.tail=0),e}peek(){if(!(this.size<=0))return this.items[this.head]}}const T=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),f=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class W{pool;opts;toggleFindLastFreeWorkerNodeKey=!1;taskStatisticsRequirements={runTime:{aggregate:!1,average:!1,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};constructor(e,t=d){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.taskStatisticsRequirements.runTime.average&&!0===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!1,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.runTime.median&&!1===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!0,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.waitTime.average&&!0===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!1,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.waitTime.median&&!1===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!0,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.elu.average&&!0===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!1,this.taskStatisticsRequirements.elu.median=e.elu.median),this.taskStatisticsRequirements.elu.median&&!1===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!0,this.taskStatisticsRequirements.elu.median=e.elu.median)}setOptions(e){e=e??d,this.setTaskStatisticsRequirements(e),this.opts=e}findFreeWorkerNodeKey(){return this.toggleFindLastFreeWorkerNodeKey?(this.toggleFindLastFreeWorkerNodeKey=!1,this.findLastFreeWorkerNodeKey()):(this.toggleFindLastFreeWorkerNodeKey=!0,this.findFirstFreeWorkerNodeKey())}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].workerUsage.runTime.median:this.pool.workerNodes[e].workerUsage.runTime.average}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].workerUsage.runTime.median:this.pool.workerNodes[e].workerUsage.runTime.average}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].workerUsage.elu.active.median:this.pool.workerNodes[e].workerUsage.elu.active.average}computeDefaultWorkerWeight(){let e=0;for(const t of i.cpus()){const r=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,r))*Math.pow(10,r)}return Math.round(e/i.cpus().length)}findFirstFreeWorkerNodeKey(){return this.pool.workerNodes.findIndex((e=>0===e.workerUsage.tasks.executing))}findLastFreeWorkerNodeKey(){for(let e=this.pool.workerNodes.length-1;e>=0;e--)if(0===this.pool.workerNodes[e].workerUsage.tasks.executing)return e;return-1}}class y extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){let e,t=1/0;for(const[r]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[r]&&this.computeWorkerVirtualTaskEndTimestamp(r);const s=this.workersVirtualTaskEndTimestamp[r];s<t&&(t=s,e=r)}return e}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===f.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class S extends W{currentWorkerNodeId=0;currentRoundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.currentWorkerNodeId=0,this.currentRoundId=0,!0}update(){return!0}choose(){let e,t;for(let r=this.currentRoundId;r<this.roundWeights.length;r++)for(let s=this.currentWorkerNodeId;s<this.pool.workerNodes.length;s++){if((this.opts.weights?.[s]??this.defaultWorkerWeight)>=this.roundWeights[r]){e=r,t=s;break}}this.currentRoundId=e??0,this.currentWorkerNodeId=t??0;const r=this.currentWorkerNodeId;return this.currentWorkerNodeId===this.pool.workerNodes.length-1?(this.currentWorkerNodeId=0,this.currentRoundId=this.currentRoundId===this.roundWeights.length-1?0:this.currentRoundId+1):this.currentWorkerNodeId=this.currentWorkerNodeId+1,r}remove(e){return this.currentWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.currentWorkerNodeId=0:this.currentWorkerNodeId>this.pool.workerNodes.length-1&&(this.currentWorkerNodeId=this.pool.workerNodes.length-1,this.currentRoundId=this.currentRoundId===this.roundWeights.length-1?0:this.currentRoundId+1)),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class N extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){let e,t=1/0;for(const[r,s]of this.pool.workerNodes.entries()){const i=s.workerUsage.runTime.aggregate+s.workerUsage.waitTime.aggregate;if(0===i)return r;i<t&&(t=i,e=r)}return e}remove(){return!0}}class x extends W{constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){const e=this.findFreeWorkerNodeKey();if(-1!==e)return e;let t,r=1/0;for(const[e,s]of this.pool.workerNodes.entries()){const i=s.workerUsage.tasks,o=i.executed+i.executing+i.queued;if(0===o)return e;o<r&&(r=o,t=e)}return t}remove(){return!0}}class v extends W{taskStatisticsRequirements={runTime:{aggregate:!1,average:!1,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){let e,t=1/0;for(const[r,s]of this.pool.workerNodes.entries()){const i=s.workerUsage,o=i.elu?.active.aggregate??0;if(0===o)return r;o<t&&(t=o,e=r)}return e}remove(){return!0}}class R extends W{nextWorkerNodeId=0;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeId=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeId;return this.nextWorkerNodeId=this.nextWorkerNodeId===this.pool.workerNodes.length-1?0:this.nextWorkerNodeId+1,e}remove(e){return this.nextWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeId=0:this.nextWorkerNodeId>this.pool.workerNodes.length-1&&(this.nextWorkerNodeId=this.pool.workerNodes.length-1)),!0}}class E extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};currentWorkerNodeId=0;defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.currentWorkerNodeId=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.currentWorkerNodeId,t=this.workerVirtualTaskRunTime;return t<(this.opts.weights?.[e]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=t+this.getWorkerTaskRunTime(e):(this.currentWorkerNodeId=this.currentWorkerNodeId===this.pool.workerNodes.length-1?0:this.currentWorkerNodeId+1,this.workerVirtualTaskRunTime=0),e}remove(e){return this.currentWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.currentWorkerNodeId=0:this.currentWorkerNodeId>this.pool.workerNodes.length-1&&(this.currentWorkerNodeId=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}}class I{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=T.ROUND_ROBIN,r=d){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[T.ROUND_ROBIN,new(R.bind(this))(e,r)],[T.LEAST_USED,new(x.bind(this))(e,r)],[T.LEAST_BUSY,new(N.bind(this))(e,r)],[T.LEAST_ELU,new(v.bind(this))(e,r)],[T.FAIR_SHARE,new(y.bind(this))(e,r)],[T.WEIGHTED_ROUND_ROBIN,new(E.bind(this))(e,r)],[T.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(S.bind(this))(e,r)]])}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e)throw new Error("Worker node key chosen is null or undefined");return e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class b{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;constructor(e,t,r){if(this.numberOfWorkers=e,this.filePath=t,this.opts=r,!this.isMain())throw new Error("Cannot start a pool from a worker!");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new u),this.workerChoiceStrategyContext=new I(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook();for(let e=1;e<=this.numberOfWorkers;e++)this.createAndSetupWorker()}checkFilePath(e){if(null==e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation")}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===n.fixed&&0===e)throw new Error("Cannot instantiate a fixed pool with no worker")}checkPoolOptions(e){if(!g(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??T.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??d,this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(T).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!g(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node")}checkValidTasksQueueOptions(e){if(null!=e&&!g(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(e?.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}get info(){return{type:this.type,worker:this.worker,minSize:this.minSize,maxSize:this.maxSize,workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.workerUsage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.workerUsage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.executing),0),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.tasksQueue.size),0),maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+t.tasksQueue.maxSize),0),failedTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.failed),0)}}getWorkerNodeKey(e){return this.workerNodes.findIndex((t=>t.worker===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const e of this.workerNodes)this.setWorkerNodeTasksUsage(e,this.getWorkerUsage(e.worker)),this.setWorkerStatistics(e.worker)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions=e,this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}buildTasksQueueOptions(e){return{concurrency:e?.concurrency??1}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return-1===this.workerNodes.findIndex((e=>0===e.workerUsage.tasks.executing))}async execute(e,t){const i=s.performance.now(),o=this.chooseWorkerNode(),a={name:t,data:e??{},timestamp:i,id:r.randomUUID()},n=new Promise(((e,t)=>{this.promiseResponseMap.set(a.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].workerUsage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,a):this.executeTask(o,a),this.workerChoiceStrategyContext.update(o),this.checkAndEmitEvents(),n}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t),await this.destroyWorker(e.worker)})))}setupHook(){}beforeTaskExecutionHook(e,t){const r=this.workerNodes[e].workerUsage;++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const r=this.workerNodes[this.getWorkerNodeKey(e)].workerUsage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const r=e.tasks;--r.executing,++r.executed,null!=t.taskError&&++r.failed}updateRunTimeWorkerUsage(e,t){this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&(e.runTime.aggregate+=t.taskPerformance?.runTime??0,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&0!==e.tasks.executed&&(e.runTime.average=e.runTime.aggregate/(e.tasks.executed-e.tasks.failed)),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&null!=t.taskPerformance?.runTime&&(e.runTime.history.push(t.taskPerformance.runTime),e.runTime.median=l(e.runTime.history)))}updateWaitTimeWorkerUsage(e,t){const r=s.performance.now(),i=r-(t.timestamp??r);this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&(e.waitTime.aggregate+=i??0,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&0!==e.tasks.executed&&(e.waitTime.average=e.waitTime.aggregate/(e.tasks.executed-e.tasks.failed)),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&null!=i&&(e.waitTime.history.push(i),e.waitTime.median=l(e.waitTime.history)))}updateEluWorkerUsage(e,t){if(this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate){if(null!=e.elu&&null!=t.taskPerformance?.elu?(e.elu.idle.aggregate+=t.taskPerformance.elu.idle,e.elu.active.aggregate+=t.taskPerformance.elu.active,e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2):null!=t.taskPerformance?.elu&&(e.elu.idle.aggregate=t.taskPerformance.elu.idle,e.elu.active.aggregate=t.taskPerformance.elu.active,e.elu.utilization=t.taskPerformance.elu.utilization),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.average&&0!==e.tasks.executed){const t=e.tasks.executed-e.tasks.failed;e.elu.idle.average=e.elu.idle.aggregate/t,e.elu.active.average=e.elu.active.aggregate/t}this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.median&&null!=t.taskPerformance?.elu&&(e.elu.idle.history.push(t.taskPerformance.elu.idle),e.elu.active.history.push(t.taskPerformance.elu.active),e.elu.idle.median=l(e.elu.idle.history),e.elu.active.median=l(e.elu.active.history))}}chooseWorkerNode(){let e;if(this.type===n.dynamic&&!this.full&&this.internalBusy()){const t=this.createAndSetupWorker();this.registerWorkerMessageListener(t,(e=>{const r=this.getWorkerNodeKey(t);var s;s=m.HARD,(e.kill===s||null!=e.kill&&0===this.workerNodes[r].workerUsage.tasks.executing)&&(this.flushTasksQueue(r),this.destroyWorker(t))})),e=this.getWorkerNodeKey(t)}else e=this.workerChoiceStrategyContext.execute();return e}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??c),e.on("error",this.opts.errorHandler??c),e.on("error",(e=>{null!=this.emitter&&this.emitter.emit(k.error,e)})),e.on("error",(()=>{!0===this.opts.restartWorkerOnError&&this.createAndSetupWorker()})),e.on("online",this.opts.onlineHandler??c),e.on("exit",this.opts.exitHandler??c),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.pushWorkerNode(e),this.setWorkerStatistics(e),this.afterWorkerSetup(e),e}workerListener(){return e=>{if(null!=e.id){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(t.reject(e.taskError.message),null!=this.emitter&&this.emitter.emit(k.taskError,e.taskError)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const r=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(r)>0&&this.executeTask(r,this.dequeueTask(r))}}}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter?.emit(k.busy,this.info),this.type===n.dynamic&&this.full&&this.emitter?.emit(k.full,this.info))}setWorkerNodeTasksUsage(e,t){e.workerUsage=t}pushWorkerNode(e){return this.workerNodes.push({worker:e,workerUsage:this.getWorkerUsage(e),tasksQueue:new w})}removeWorkerNode(e){const t=this.getWorkerNodeKey(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(this.workerNodes[e].worker,t)}enqueueTask(e,t){return this.workerNodes[e].tasksQueue.enqueue(t)}dequeueTask(e){return this.workerNodes[e].tasksQueue.dequeue()}tasksQueueSize(e){return this.workerNodes[e].tasksQueue.size}flushTasksQueue(e){if(this.tasksQueueSize(e)>0)for(let t=0;t<this.tasksQueueSize(e);t++)this.executeTask(e,this.dequeueTask(e))}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}setWorkerStatistics(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate}})}getWorkerUsage(e){return{tasks:this.getTaskStatistics(e),runTime:{aggregate:0,average:0,median:0,history:new p},waitTime:{aggregate:0,average:0,median:0,history:new p},elu:{idle:{aggregate:0,average:0,median:0,history:new p},active:{aggregate:0,average:0,median:0,history:new p},utilization:0}}}getTaskStatistics(e){const t=this.workerNodes[this.getWorkerNodeKey(e)]?.tasksQueue?.size;return{executed:0,executing:0,get queued(){return t??0},failed:0}}}class O extends b{opts;constructor(e,t,r={}){super(e,t,r),this.opts=r}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}destroyWorker(e){this.sendToWorker(e,{kill:1}),e.kill()}sendToWorker(e,t){e.send(t)}registerWorkerMessageListener(e,t){e.on("message",t)}createWorker(){return t.fork(this.opts.env)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,super.workerListener())}get type(){return n.fixed}get worker(){return h.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class C extends b{opts;constructor(e,t,r={}){super(e,t,r),this.opts=r}isMain(){return o.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:1}),await e.terminate()}sendToWorker(e,t){e.postMessage(t)}registerWorkerMessageListener(e,t){e.port2?.on("message",t)}createWorker(){return new o.Worker(this.filePath,{env:o.SHARE_ENV,...this.opts.workerOptions})}afterWorkerSetup(e){const{port1:t,port2:r}=new o.MessageChannel;e.postMessage({parent:t},[t]),e.port1=t,e.port2=r,this.registerWorkerMessageListener(e,super.workerListener())}get type(){return n.fixed}get worker(){return h.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const q="default",z=6e4,U=m.SOFT;class A extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;aliveInterval;constructor(e,t,r,i,o={killBehavior:U,maxInactiveTime:z}){super(e),this.isMain=t,this.mainWorker=i,this.opts=o,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||(this.lastTaskTimestamp=s.performance.now(),this.aliveInterval=setInterval(this.checkAlive.bind(this),(this.opts.maxInactiveTime??z)/2),this.checkAlive.bind(this)()),this.mainWorker?.on("message",this.messageListener.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??U,this.opts.maxInactiveTime=e.maxInactiveTime??z,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e)this.taskFunctions.set(q,e.bind(this));else{if(!g(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[r,s]of Object.entries(e)){if("function"!=typeof s)throw new TypeError("A taskFunctions parameter object value is not a function");this.taskFunctions.set(r,s.bind(this)),t&&(this.taskFunctions.set(q,s.bind(this)),t=!1)}if(t)throw new Error("taskFunctions parameter object is empty")}}}messageListener(e){if(null!=e.id&&null!=e.data){const t=this.getTaskFunction(e.name);"AsyncFunction"===t?.constructor.name?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}else null!=e.parent?this.mainWorker=e.parent:null!=e.kill?(null!=this.aliveInterval&&clearInterval(this.aliveInterval),this.emitDestroy()):null!=e.statistics&&(this.statistics=e.statistics)}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker was not set");return this.mainWorker}checkAlive(){s.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??z)&&this.sendToMainWorker({kill:this.opts.killBehavior})}handleError(e){return e}runSync(e,t){try{let r=this.beginTaskPerformance();const s=e(t.data);r=this.endTaskPerformance(r),this.sendToMainWorker({data:s,taskPerformance:r,id:t.id})}catch(e){const r=this.handleError(e);this.sendToMainWorker({taskError:{message:r,data:t.data},id:t.id})}finally{!this.isMain&&(this.lastTaskTimestamp=s.performance.now())}}runAsync(e,t){let r=this.beginTaskPerformance();e(t.data).then((e=>(r=this.endTaskPerformance(r),this.sendToMainWorker({data:e,taskPerformance:r,id:t.id}),null))).catch((e=>{const r=this.handleError(e);this.sendToMainWorker({taskError:{message:r,data:t.data},id:t.id})})).finally((()=>{!this.isMain&&(this.lastTaskTimestamp=s.performance.now())})).catch(c)}getTaskFunction(e){e=e??q;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(){return{timestamp:s.performance.now(),...this.statistics.elu&&{elu:s.performance.eventLoopUtilization()}}}endTaskPerformance(e){return{...e,...this.statistics.runTime&&{runTime:s.performance.now()-e.timestamp},...this.statistics.elu&&{elu:s.performance.eventLoopUtilization(e.elu)}}}}exports.ClusterWorker=class extends A{constructor(e,r={}){super("worker-cluster-pool:poolifier",t.isPrimary,e,t.worker,r)}sendToMainWorker(e){this.getMainWorker().send(e)}handleError(e){return e instanceof Error?e.message:e}},exports.DynamicClusterPool=class extends O{max;constructor(e,t,r,s={}){super(e,r,s),this.max=t}get type(){return n.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends C{max;constructor(e,t,r,s={}){super(e,r,s),this.max=t}get type(){return n.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=O,exports.FixedThreadPool=C,exports.KillBehaviors=m,exports.Measurements=f,exports.PoolEvents=k,exports.PoolTypes=n,exports.ThreadWorker=class extends A{constructor(e,t={}){super("worker-thread-pool:poolifier",o.isMainThread,e,o.parentPort,t)}sendToMainWorker(e){this.getMainWorker().postMessage(e)}},exports.WorkerChoiceStrategies=T,exports.WorkerTypes=h;
"use strict";var e=require("node:events"),t=require("node:cluster"),r=require("node:crypto"),s=require("node:perf_hooks"),i=require("node:os"),o=require("node:worker_threads"),a=require("node:async_hooks");const n=Object.freeze({fixed:"fixed",dynamic:"dynamic"}),h=Object.freeze({cluster:"cluster",thread:"thread"});class u extends e{}const k=Object.freeze({full:"full",busy:"busy",error:"error",taskError:"taskError"}),c=Object.freeze((()=>{})),d={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},l=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},g=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),m=Object.freeze({SOFT:"SOFT",HARD:"HARD"});class p extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...r){let s;return arguments.length>=3&&void 0!==t?(s=super.splice(e,t),this.push(...r)):s=2===arguments.length?super.splice(e,t):super.splice(e),s}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class w{items;head;tail;max;constructor(){this.items={},this.head=0,this.tail=0,this.max=0}get size(){return this.tail-this.head}get maxSize(){return this.max}enqueue(e){return this.items[this.tail]=e,this.tail++,this.size>this.max&&(this.max=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.head];return delete this.items[this.head],this.head++,this.head===this.tail&&(this.head=0,this.tail=0),e}peek(){if(!(this.size<=0))return this.items[this.head]}}const T=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),f=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class W{pool;opts;toggleFindLastFreeWorkerNodeKey=!1;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:{aggregate:!1,average:!1,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};constructor(e,t=d){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.taskStatisticsRequirements.runTime.average&&!0===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!1,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.runTime.median&&!1===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!0,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.waitTime.average&&!0===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!1,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.waitTime.median&&!1===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!0,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.elu.average&&!0===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!1,this.taskStatisticsRequirements.elu.median=e.elu.median),this.taskStatisticsRequirements.elu.median&&!1===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!0,this.taskStatisticsRequirements.elu.median=e.elu.median)}setOptions(e){e=e??d,this.setTaskStatisticsRequirements(e),this.opts=e}findFreeWorkerNodeKey(){return this.toggleFindLastFreeWorkerNodeKey?(this.toggleFindLastFreeWorkerNodeKey=!1,this.findLastFreeWorkerNodeKey()):(this.toggleFindLastFreeWorkerNodeKey=!0,this.findFirstFreeWorkerNodeKey())}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].workerUsage.runTime.median:this.pool.workerNodes[e].workerUsage.runTime.average}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].workerUsage.runTime.median:this.pool.workerNodes[e].workerUsage.runTime.average}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].workerUsage.elu.active.median:this.pool.workerNodes[e].workerUsage.elu.active.average}computeDefaultWorkerWeight(){let e=0;for(const t of i.cpus()){const r=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,r))*Math.pow(10,r)}return Math.round(e/i.cpus().length)}findFirstFreeWorkerNodeKey(){return this.pool.workerNodes.findIndex((e=>0===e.workerUsage.tasks.executing))}findLastFreeWorkerNodeKey(){for(let e=this.pool.workerNodes.length-1;e>=0;e--)if(0===this.pool.workerNodes[e].workerUsage.tasks.executing)return e;return-1}}class y extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){let e,t=1/0;for(const[r]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[r]&&this.computeWorkerVirtualTaskEndTimestamp(r);const s=this.workersVirtualTaskEndTimestamp[r];s<t&&(t=s,e=r)}return e}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===f.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class S extends W{strategyPolicy={useDynamicWorker:!0};currentWorkerNodeId=0;currentRoundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.currentWorkerNodeId=0,this.currentRoundId=0,!0}update(){return!0}choose(){let e,t;for(let r=this.currentRoundId;r<this.roundWeights.length;r++)for(let s=this.currentWorkerNodeId;s<this.pool.workerNodes.length;s++){if((this.opts.weights?.[s]??this.defaultWorkerWeight)>=this.roundWeights[r]){e=r,t=s;break}}this.currentRoundId=e??0,this.currentWorkerNodeId=t??0;const r=this.currentWorkerNodeId;return this.currentWorkerNodeId===this.pool.workerNodes.length-1?(this.currentWorkerNodeId=0,this.currentRoundId=this.currentRoundId===this.roundWeights.length-1?0:this.currentRoundId+1):this.currentWorkerNodeId=this.currentWorkerNodeId+1,r}remove(e){return this.currentWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.currentWorkerNodeId=0:this.currentWorkerNodeId>this.pool.workerNodes.length-1&&(this.currentWorkerNodeId=this.pool.workerNodes.length-1,this.currentRoundId=this.currentRoundId===this.roundWeights.length-1?0:this.currentRoundId+1)),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class N extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){let e,t=1/0;for(const[r,s]of this.pool.workerNodes.entries()){const i=s.workerUsage.runTime.aggregate+s.workerUsage.waitTime.aggregate;if(0===i)return r;i<t&&(t=i,e=r)}return e}remove(){return!0}}class x extends W{constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){const e=this.findFreeWorkerNodeKey();if(-1!==e)return e;let t,r=1/0;for(const[e,s]of this.pool.workerNodes.entries()){const i=s.workerUsage.tasks,o=i.executed+i.executing+i.queued;if(0===o)return e;o<r&&(r=o,t=e)}return t}remove(){return!0}}class v extends W{taskStatisticsRequirements={runTime:{aggregate:!1,average:!1,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){let e,t=1/0;for(const[r,s]of this.pool.workerNodes.entries()){const i=s.workerUsage,o=i.elu?.active.aggregate??0;if(0===o)return r;o<t&&(t=o,e=r)}return e}remove(){return!0}}class R extends W{strategyPolicy={useDynamicWorker:!0};nextWorkerNodeId=0;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeId=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeId;return this.nextWorkerNodeId=this.nextWorkerNodeId===this.pool.workerNodes.length-1?0:this.nextWorkerNodeId+1,e}remove(e){return this.nextWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeId=0:this.nextWorkerNodeId>this.pool.workerNodes.length-1&&(this.nextWorkerNodeId=this.pool.workerNodes.length-1)),!0}}class E extends W{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};currentWorkerNodeId=0;defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.currentWorkerNodeId=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.currentWorkerNodeId,t=this.workerVirtualTaskRunTime;return t<(this.opts.weights?.[e]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=t+this.getWorkerTaskRunTime(e):(this.currentWorkerNodeId=this.currentWorkerNodeId===this.pool.workerNodes.length-1?0:this.currentWorkerNodeId+1,this.workerVirtualTaskRunTime=0),e}remove(e){return this.currentWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.currentWorkerNodeId=0:this.currentWorkerNodeId>this.pool.workerNodes.length-1&&(this.currentWorkerNodeId=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}}class I{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=T.ROUND_ROBIN,r=d){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[T.ROUND_ROBIN,new(R.bind(this))(e,r)],[T.LEAST_USED,new(x.bind(this))(e,r)],[T.LEAST_BUSY,new(N.bind(this))(e,r)],[T.LEAST_ELU,new(v.bind(this))(e,r)],[T.FAIR_SHARE,new(y.bind(this))(e,r)],[T.WEIGHTED_ROUND_ROBIN,new(E.bind(this))(e,r)],[T.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(S.bind(this))(e,r)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e)throw new Error("Worker node key chosen is null or undefined");return e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class b{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;constructor(e,t,r){if(this.numberOfWorkers=e,this.filePath=t,this.opts=r,!this.isMain())throw new Error("Cannot start a pool from a worker!");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new u),this.workerChoiceStrategyContext=new I(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook();for(let e=1;e<=this.numberOfWorkers;e++)this.createAndSetupWorker()}checkFilePath(e){if(null==e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation")}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===n.fixed&&0===e)throw new Error("Cannot instantiate a fixed pool with no worker")}checkPoolOptions(e){if(!g(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??T.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??d,this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(T).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!g(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node")}checkValidTasksQueueOptions(e){if(null!=e&&!g(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(e?.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}get info(){return{type:this.type,worker:this.worker,minSize:this.minSize,maxSize:this.maxSize,workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.workerUsage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.workerUsage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.executing),0),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.tasksQueue.size),0),maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+t.tasksQueue.maxSize),0),failedTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.failed),0)}}getWorkerNodeKey(e){return this.workerNodes.findIndex((t=>t.worker===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const e of this.workerNodes)this.setWorkerNodeTasksUsage(e,this.getWorkerUsage(e.worker)),this.setWorkerStatistics(e.worker)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions=e,this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}buildTasksQueueOptions(e){return{concurrency:e?.concurrency??1}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return-1===this.workerNodes.findIndex((e=>0===e.workerUsage.tasks.executing))}async execute(e,t){const i=s.performance.now(),o=this.chooseWorkerNode(),a={name:t,data:e??{},timestamp:i,id:r.randomUUID()},n=new Promise(((e,t)=>{this.promiseResponseMap.set(a.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].workerUsage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,a):this.executeTask(o,a),this.workerChoiceStrategyContext.update(o),this.checkAndEmitEvents(),n}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t),await this.destroyWorker(e.worker)})))}setupHook(){}beforeTaskExecutionHook(e,t){const r=this.workerNodes[e].workerUsage;++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const r=this.workerNodes[this.getWorkerNodeKey(e)].workerUsage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const r=e.tasks;--r.executing,++r.executed,null!=t.taskError&&++r.failed}updateRunTimeWorkerUsage(e,t){this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&(e.runTime.aggregate+=t.taskPerformance?.runTime??0,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&0!==e.tasks.executed&&(e.runTime.average=e.runTime.aggregate/(e.tasks.executed-e.tasks.failed)),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&null!=t.taskPerformance?.runTime&&(e.runTime.history.push(t.taskPerformance.runTime),e.runTime.median=l(e.runTime.history)))}updateWaitTimeWorkerUsage(e,t){const r=s.performance.now(),i=r-(t.timestamp??r);this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&(e.waitTime.aggregate+=i??0,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&0!==e.tasks.executed&&(e.waitTime.average=e.waitTime.aggregate/(e.tasks.executed-e.tasks.failed)),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&null!=i&&(e.waitTime.history.push(i),e.waitTime.median=l(e.waitTime.history)))}updateEluWorkerUsage(e,t){if(this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate){if(null!=e.elu&&null!=t.taskPerformance?.elu?(e.elu.idle.aggregate+=t.taskPerformance.elu.idle,e.elu.active.aggregate+=t.taskPerformance.elu.active,e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2):null!=t.taskPerformance?.elu&&(e.elu.idle.aggregate=t.taskPerformance.elu.idle,e.elu.active.aggregate=t.taskPerformance.elu.active,e.elu.utilization=t.taskPerformance.elu.utilization),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.average&&0!==e.tasks.executed){const t=e.tasks.executed-e.tasks.failed;e.elu.idle.average=e.elu.idle.aggregate/t,e.elu.active.average=e.elu.active.aggregate/t}this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.median&&null!=t.taskPerformance?.elu&&(e.elu.idle.history.push(t.taskPerformance.elu.idle),e.elu.active.history.push(t.taskPerformance.elu.active),e.elu.idle.median=l(e.elu.idle.history),e.elu.active.median=l(e.elu.active.history))}}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorker();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return this.getWorkerNodeKey(e)}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===n.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??c),e.on("error",this.opts.errorHandler??c),e.on("error",(e=>{null!=this.emitter&&this.emitter.emit(k.error,e),!0===this.opts.restartWorkerOnError&&this.createAndSetupWorker()})),e.on("online",this.opts.onlineHandler??c),e.on("exit",this.opts.exitHandler??c),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.pushWorkerNode(e),this.setWorkerStatistics(e),this.afterWorkerSetup(e),e}createAndSetupDynamicWorker(){const e=this.createAndSetupWorker();return this.registerWorkerMessageListener(e,(t=>{const r=this.getWorkerNodeKey(e);var s;s=m.HARD,(t.kill===s||null!=t.kill&&0===this.workerNodes[r].workerUsage.tasks.executing)&&(this.flushTasksQueue(r),this.destroyWorker(e))})),e}workerListener(){return e=>{if(null!=e.id){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(t.reject(e.taskError.message),null!=this.emitter&&this.emitter.emit(k.taskError,e.taskError)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const r=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(r)>0&&this.executeTask(r,this.dequeueTask(r))}}}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter?.emit(k.busy,this.info),this.type===n.dynamic&&this.full&&this.emitter?.emit(k.full,this.info))}setWorkerNodeTasksUsage(e,t){e.workerUsage=t}pushWorkerNode(e){return this.workerNodes.push({worker:e,workerUsage:this.getWorkerUsage(e),tasksQueue:new w})}removeWorkerNode(e){const t=this.getWorkerNodeKey(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(this.workerNodes[e].worker,t)}enqueueTask(e,t){return this.workerNodes[e].tasksQueue.enqueue(t)}dequeueTask(e){return this.workerNodes[e].tasksQueue.dequeue()}tasksQueueSize(e){return this.workerNodes[e].tasksQueue.size}flushTasksQueue(e){if(this.tasksQueueSize(e)>0)for(let t=0;t<this.tasksQueueSize(e);t++)this.executeTask(e,this.dequeueTask(e))}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}setWorkerStatistics(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate}})}getWorkerUsage(e){return{tasks:this.getTaskStatistics(e),runTime:{aggregate:0,average:0,median:0,history:new p},waitTime:{aggregate:0,average:0,median:0,history:new p},elu:{idle:{aggregate:0,average:0,median:0,history:new p},active:{aggregate:0,average:0,median:0,history:new p},utilization:0}}}getTaskStatistics(e){const t=this.workerNodes[this.getWorkerNodeKey(e)]?.tasksQueue?.size;return{executed:0,executing:0,get queued(){return t??0},failed:0}}}class C extends b{opts;constructor(e,t,r={}){super(e,t,r),this.opts=r}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}destroyWorker(e){this.sendToWorker(e,{kill:1}),e.kill()}sendToWorker(e,t){e.send(t)}registerWorkerMessageListener(e,t){e.on("message",t)}createWorker(){return t.fork(this.opts.env)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,super.workerListener())}get type(){return n.fixed}get worker(){return h.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class O extends b{opts;constructor(e,t,r={}){super(e,t,r),this.opts=r}isMain(){return o.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:1}),await e.terminate()}sendToWorker(e,t){e.postMessage(t)}registerWorkerMessageListener(e,t){e.port2?.on("message",t)}createWorker(){return new o.Worker(this.filePath,{env:o.SHARE_ENV,...this.opts.workerOptions})}afterWorkerSetup(e){const{port1:t,port2:r}=new o.MessageChannel;e.postMessage({parent:t},[t]),e.port1=t,e.port2=r,this.registerWorkerMessageListener(e,super.workerListener())}get type(){return n.fixed}get worker(){return h.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const q="default",z=6e4,U=m.SOFT;class P extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;aliveInterval;constructor(e,t,r,i,o={killBehavior:U,maxInactiveTime:z}){super(e),this.isMain=t,this.mainWorker=i,this.opts=o,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||(this.lastTaskTimestamp=s.performance.now(),this.aliveInterval=setInterval(this.checkAlive.bind(this),(this.opts.maxInactiveTime??z)/2),this.checkAlive.bind(this)()),this.mainWorker?.on("message",this.messageListener.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??U,this.opts.maxInactiveTime=e.maxInactiveTime??z,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e)this.taskFunctions.set(q,e.bind(this));else{if(!g(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[r,s]of Object.entries(e)){if("function"!=typeof s)throw new TypeError("A taskFunctions parameter object value is not a function");this.taskFunctions.set(r,s.bind(this)),t&&(this.taskFunctions.set(q,s.bind(this)),t=!1)}if(t)throw new Error("taskFunctions parameter object is empty")}}}messageListener(e){if(null!=e.id&&null!=e.data){const t=this.getTaskFunction(e.name);"AsyncFunction"===t?.constructor.name?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}else null!=e.parent?this.mainWorker=e.parent:null!=e.kill?(null!=this.aliveInterval&&clearInterval(this.aliveInterval),this.emitDestroy()):null!=e.statistics&&(this.statistics=e.statistics)}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker was not set");return this.mainWorker}checkAlive(){s.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??z)&&this.sendToMainWorker({kill:this.opts.killBehavior})}handleError(e){return e}runSync(e,t){try{let r=this.beginTaskPerformance();const s=e(t.data);r=this.endTaskPerformance(r),this.sendToMainWorker({data:s,taskPerformance:r,id:t.id})}catch(e){const r=this.handleError(e);this.sendToMainWorker({taskError:{message:r,data:t.data},id:t.id})}finally{!this.isMain&&(this.lastTaskTimestamp=s.performance.now())}}runAsync(e,t){let r=this.beginTaskPerformance();e(t.data).then((e=>(r=this.endTaskPerformance(r),this.sendToMainWorker({data:e,taskPerformance:r,id:t.id}),null))).catch((e=>{const r=this.handleError(e);this.sendToMainWorker({taskError:{message:r,data:t.data},id:t.id})})).finally((()=>{!this.isMain&&(this.lastTaskTimestamp=s.performance.now())})).catch(c)}getTaskFunction(e){e=e??q;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(){return{timestamp:s.performance.now(),...this.statistics.elu&&{elu:s.performance.eventLoopUtilization()}}}endTaskPerformance(e){return{...e,...this.statistics.runTime&&{runTime:s.performance.now()-e.timestamp},...this.statistics.elu&&{elu:s.performance.eventLoopUtilization(e.elu)}}}}exports.ClusterWorker=class extends P{constructor(e,r={}){super("worker-cluster-pool:poolifier",t.isPrimary,e,t.worker,r)}sendToMainWorker(e){this.getMainWorker().send(e)}handleError(e){return e instanceof Error?e.message:e}},exports.DynamicClusterPool=class extends C{max;constructor(e,t,r,s={}){super(e,r,s),this.max=t}get type(){return n.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends O{max;constructor(e,t,r,s={}){super(e,r,s),this.max=t}get type(){return n.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=C,exports.FixedThreadPool=O,exports.KillBehaviors=m,exports.Measurements=f,exports.PoolEvents=k,exports.PoolTypes=n,exports.ThreadWorker=class extends P{constructor(e,t={}){super("worker-thread-pool:poolifier",o.isMainThread,e,o.parentPort,t)}sendToMainWorker(e){this.getMainWorker().postMessage(e)}},exports.WorkerChoiceStrategies=T,exports.WorkerTypes=h;

2

lib/index.d.ts

@@ -8,3 +8,3 @@ export type { AbstractPool } from './pools/abstract-pool';

export { Measurements, WorkerChoiceStrategies } from './pools/selection-strategies/selection-strategies-types';
export type { IWorkerChoiceStrategy, Measurement, MeasurementOptions, MeasurementStatisticsRequirements, TaskStatisticsRequirements, WorkerChoiceStrategy, WorkerChoiceStrategyOptions } from './pools/selection-strategies/selection-strategies-types';
export type { IWorkerChoiceStrategy, Measurement, MeasurementOptions, MeasurementStatisticsRequirements, StrategyPolicy, TaskStatisticsRequirements, WorkerChoiceStrategy, WorkerChoiceStrategyOptions } from './pools/selection-strategies/selection-strategies-types';
export type { WorkerChoiceStrategyContext } from './pools/selection-strategies/worker-choice-strategy-context';

@@ -11,0 +11,0 @@ export { DynamicThreadPool } from './pools/thread/dynamic';

2

lib/index.js

@@ -1,1 +0,1 @@

"use strict";var e=require("node:events"),t=require("node:cluster"),r=require("node:crypto"),s=require("node:perf_hooks"),i=require("node:os"),o=require("node:worker_threads"),a=require("node:async_hooks");const n=Object.freeze({fixed:"fixed",dynamic:"dynamic"}),h=Object.freeze({cluster:"cluster",thread:"thread"});class u extends e{}const k=Object.freeze({full:"full",busy:"busy",error:"error",taskError:"taskError"}),c=Object.freeze((()=>{})),d={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},l=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},g=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),m=Object.freeze({SOFT:"SOFT",HARD:"HARD"});class p extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...r){let s;return arguments.length>=3&&void 0!==t?(s=super.splice(e,t),this.push(...r)):s=2===arguments.length?super.splice(e,t):super.splice(e),s}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class w{items;head;tail;max;constructor(){this.items={},this.head=0,this.tail=0,this.max=0}get size(){return this.tail-this.head}get maxSize(){return this.max}enqueue(e){return this.items[this.tail]=e,this.tail++,this.size>this.max&&(this.max=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.head];return delete this.items[this.head],this.head++,this.head===this.tail&&(this.head=0,this.tail=0),e}peek(){if(!(this.size<=0))return this.items[this.head]}}const T=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),f=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class W{pool;opts;toggleFindLastFreeWorkerNodeKey=!1;taskStatisticsRequirements={runTime:{aggregate:!1,average:!1,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};constructor(e,t=d){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.taskStatisticsRequirements.runTime.average&&!0===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!1,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.runTime.median&&!1===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!0,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.waitTime.average&&!0===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!1,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.waitTime.median&&!1===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!0,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.elu.average&&!0===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!1,this.taskStatisticsRequirements.elu.median=e.elu.median),this.taskStatisticsRequirements.elu.median&&!1===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!0,this.taskStatisticsRequirements.elu.median=e.elu.median)}setOptions(e){e=e??d,this.setTaskStatisticsRequirements(e),this.opts=e}findFreeWorkerNodeKey(){return this.toggleFindLastFreeWorkerNodeKey?(this.toggleFindLastFreeWorkerNodeKey=!1,this.findLastFreeWorkerNodeKey()):(this.toggleFindLastFreeWorkerNodeKey=!0,this.findFirstFreeWorkerNodeKey())}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].workerUsage.runTime.median:this.pool.workerNodes[e].workerUsage.runTime.average}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].workerUsage.runTime.median:this.pool.workerNodes[e].workerUsage.runTime.average}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].workerUsage.elu.active.median:this.pool.workerNodes[e].workerUsage.elu.active.average}computeDefaultWorkerWeight(){let e=0;for(const t of i.cpus()){const r=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,r))*Math.pow(10,r)}return Math.round(e/i.cpus().length)}findFirstFreeWorkerNodeKey(){return this.pool.workerNodes.findIndex((e=>0===e.workerUsage.tasks.executing))}findLastFreeWorkerNodeKey(){for(let e=this.pool.workerNodes.length-1;e>=0;e--)if(0===this.pool.workerNodes[e].workerUsage.tasks.executing)return e;return-1}}class y extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){let e,t=1/0;for(const[r]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[r]&&this.computeWorkerVirtualTaskEndTimestamp(r);const s=this.workersVirtualTaskEndTimestamp[r];s<t&&(t=s,e=r)}return e}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===f.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class S extends W{currentWorkerNodeId=0;currentRoundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.currentWorkerNodeId=0,this.currentRoundId=0,!0}update(){return!0}choose(){let e,t;for(let r=this.currentRoundId;r<this.roundWeights.length;r++)for(let s=this.currentWorkerNodeId;s<this.pool.workerNodes.length;s++){if((this.opts.weights?.[s]??this.defaultWorkerWeight)>=this.roundWeights[r]){e=r,t=s;break}}this.currentRoundId=e??0,this.currentWorkerNodeId=t??0;const r=this.currentWorkerNodeId;return this.currentWorkerNodeId===this.pool.workerNodes.length-1?(this.currentWorkerNodeId=0,this.currentRoundId=this.currentRoundId===this.roundWeights.length-1?0:this.currentRoundId+1):this.currentWorkerNodeId=this.currentWorkerNodeId+1,r}remove(e){return this.currentWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.currentWorkerNodeId=0:this.currentWorkerNodeId>this.pool.workerNodes.length-1&&(this.currentWorkerNodeId=this.pool.workerNodes.length-1,this.currentRoundId=this.currentRoundId===this.roundWeights.length-1?0:this.currentRoundId+1)),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class N extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){let e,t=1/0;for(const[r,s]of this.pool.workerNodes.entries()){const i=s.workerUsage.runTime.aggregate+s.workerUsage.waitTime.aggregate;if(0===i)return r;i<t&&(t=i,e=r)}return e}remove(){return!0}}class x extends W{constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){const e=this.findFreeWorkerNodeKey();if(-1!==e)return e;let t,r=1/0;for(const[e,s]of this.pool.workerNodes.entries()){const i=s.workerUsage.tasks,o=i.executed+i.executing+i.queued;if(0===o)return e;o<r&&(r=o,t=e)}return t}remove(){return!0}}class v extends W{taskStatisticsRequirements={runTime:{aggregate:!1,average:!1,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){let e,t=1/0;for(const[r,s]of this.pool.workerNodes.entries()){const i=s.workerUsage,o=i.elu?.active.aggregate??0;if(0===o)return r;o<t&&(t=o,e=r)}return e}remove(){return!0}}class R extends W{nextWorkerNodeId=0;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeId=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeId;return this.nextWorkerNodeId=this.nextWorkerNodeId===this.pool.workerNodes.length-1?0:this.nextWorkerNodeId+1,e}remove(e){return this.nextWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeId=0:this.nextWorkerNodeId>this.pool.workerNodes.length-1&&(this.nextWorkerNodeId=this.pool.workerNodes.length-1)),!0}}class E extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};currentWorkerNodeId=0;defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.currentWorkerNodeId=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.currentWorkerNodeId,t=this.workerVirtualTaskRunTime;return t<(this.opts.weights?.[e]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=t+this.getWorkerTaskRunTime(e):(this.currentWorkerNodeId=this.currentWorkerNodeId===this.pool.workerNodes.length-1?0:this.currentWorkerNodeId+1,this.workerVirtualTaskRunTime=0),e}remove(e){return this.currentWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.currentWorkerNodeId=0:this.currentWorkerNodeId>this.pool.workerNodes.length-1&&(this.currentWorkerNodeId=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}}class I{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=T.ROUND_ROBIN,r=d){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[T.ROUND_ROBIN,new(R.bind(this))(e,r)],[T.LEAST_USED,new(x.bind(this))(e,r)],[T.LEAST_BUSY,new(N.bind(this))(e,r)],[T.LEAST_ELU,new(v.bind(this))(e,r)],[T.FAIR_SHARE,new(y.bind(this))(e,r)],[T.WEIGHTED_ROUND_ROBIN,new(E.bind(this))(e,r)],[T.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(S.bind(this))(e,r)]])}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e)throw new Error("Worker node key chosen is null or undefined");return e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class b{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;constructor(e,t,r){if(this.numberOfWorkers=e,this.filePath=t,this.opts=r,!this.isMain())throw new Error("Cannot start a pool from a worker!");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new u),this.workerChoiceStrategyContext=new I(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook();for(let e=1;e<=this.numberOfWorkers;e++)this.createAndSetupWorker()}checkFilePath(e){if(null==e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation")}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===n.fixed&&0===e)throw new Error("Cannot instantiate a fixed pool with no worker")}checkPoolOptions(e){if(!g(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??T.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??d,this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(T).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!g(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node")}checkValidTasksQueueOptions(e){if(null!=e&&!g(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(e?.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}get info(){return{type:this.type,worker:this.worker,minSize:this.minSize,maxSize:this.maxSize,workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.workerUsage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.workerUsage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.executing),0),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.tasksQueue.size),0),maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+t.tasksQueue.maxSize),0),failedTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.failed),0)}}getWorkerNodeKey(e){return this.workerNodes.findIndex((t=>t.worker===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const e of this.workerNodes)this.setWorkerNodeTasksUsage(e,this.getWorkerUsage(e.worker)),this.setWorkerStatistics(e.worker)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions=e,this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}buildTasksQueueOptions(e){return{concurrency:e?.concurrency??1}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return-1===this.workerNodes.findIndex((e=>0===e.workerUsage.tasks.executing))}async execute(e,t){const i=s.performance.now(),o=this.chooseWorkerNode(),a={name:t,data:e??{},timestamp:i,id:r.randomUUID()},n=new Promise(((e,t)=>{this.promiseResponseMap.set(a.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].workerUsage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,a):this.executeTask(o,a),this.workerChoiceStrategyContext.update(o),this.checkAndEmitEvents(),n}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t),await this.destroyWorker(e.worker)})))}setupHook(){}beforeTaskExecutionHook(e,t){const r=this.workerNodes[e].workerUsage;++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const r=this.workerNodes[this.getWorkerNodeKey(e)].workerUsage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const r=e.tasks;--r.executing,++r.executed,null!=t.taskError&&++r.failed}updateRunTimeWorkerUsage(e,t){this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&(e.runTime.aggregate+=t.taskPerformance?.runTime??0,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&0!==e.tasks.executed&&(e.runTime.average=e.runTime.aggregate/(e.tasks.executed-e.tasks.failed)),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&null!=t.taskPerformance?.runTime&&(e.runTime.history.push(t.taskPerformance.runTime),e.runTime.median=l(e.runTime.history)))}updateWaitTimeWorkerUsage(e,t){const r=s.performance.now(),i=r-(t.timestamp??r);this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&(e.waitTime.aggregate+=i??0,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&0!==e.tasks.executed&&(e.waitTime.average=e.waitTime.aggregate/(e.tasks.executed-e.tasks.failed)),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&null!=i&&(e.waitTime.history.push(i),e.waitTime.median=l(e.waitTime.history)))}updateEluWorkerUsage(e,t){if(this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate){if(null!=e.elu&&null!=t.taskPerformance?.elu?(e.elu.idle.aggregate+=t.taskPerformance.elu.idle,e.elu.active.aggregate+=t.taskPerformance.elu.active,e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2):null!=t.taskPerformance?.elu&&(e.elu.idle.aggregate=t.taskPerformance.elu.idle,e.elu.active.aggregate=t.taskPerformance.elu.active,e.elu.utilization=t.taskPerformance.elu.utilization),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.average&&0!==e.tasks.executed){const t=e.tasks.executed-e.tasks.failed;e.elu.idle.average=e.elu.idle.aggregate/t,e.elu.active.average=e.elu.active.aggregate/t}this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.median&&null!=t.taskPerformance?.elu&&(e.elu.idle.history.push(t.taskPerformance.elu.idle),e.elu.active.history.push(t.taskPerformance.elu.active),e.elu.idle.median=l(e.elu.idle.history),e.elu.active.median=l(e.elu.active.history))}}chooseWorkerNode(){let e;if(this.type===n.dynamic&&!this.full&&this.internalBusy()){const t=this.createAndSetupWorker();this.registerWorkerMessageListener(t,(e=>{const r=this.getWorkerNodeKey(t);var s;s=m.HARD,(e.kill===s||null!=e.kill&&0===this.workerNodes[r].workerUsage.tasks.executing)&&(this.flushTasksQueue(r),this.destroyWorker(t))})),e=this.getWorkerNodeKey(t)}else e=this.workerChoiceStrategyContext.execute();return e}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??c),e.on("error",this.opts.errorHandler??c),e.on("error",(e=>{null!=this.emitter&&this.emitter.emit(k.error,e)})),e.on("error",(()=>{!0===this.opts.restartWorkerOnError&&this.createAndSetupWorker()})),e.on("online",this.opts.onlineHandler??c),e.on("exit",this.opts.exitHandler??c),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.pushWorkerNode(e),this.setWorkerStatistics(e),this.afterWorkerSetup(e),e}workerListener(){return e=>{if(null!=e.id){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(t.reject(e.taskError.message),null!=this.emitter&&this.emitter.emit(k.taskError,e.taskError)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const r=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(r)>0&&this.executeTask(r,this.dequeueTask(r))}}}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter?.emit(k.busy,this.info),this.type===n.dynamic&&this.full&&this.emitter?.emit(k.full,this.info))}setWorkerNodeTasksUsage(e,t){e.workerUsage=t}pushWorkerNode(e){return this.workerNodes.push({worker:e,workerUsage:this.getWorkerUsage(e),tasksQueue:new w})}removeWorkerNode(e){const t=this.getWorkerNodeKey(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(this.workerNodes[e].worker,t)}enqueueTask(e,t){return this.workerNodes[e].tasksQueue.enqueue(t)}dequeueTask(e){return this.workerNodes[e].tasksQueue.dequeue()}tasksQueueSize(e){return this.workerNodes[e].tasksQueue.size}flushTasksQueue(e){if(this.tasksQueueSize(e)>0)for(let t=0;t<this.tasksQueueSize(e);t++)this.executeTask(e,this.dequeueTask(e))}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}setWorkerStatistics(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate}})}getWorkerUsage(e){return{tasks:this.getTaskStatistics(e),runTime:{aggregate:0,average:0,median:0,history:new p},waitTime:{aggregate:0,average:0,median:0,history:new p},elu:{idle:{aggregate:0,average:0,median:0,history:new p},active:{aggregate:0,average:0,median:0,history:new p},utilization:0}}}getTaskStatistics(e){const t=this.workerNodes[this.getWorkerNodeKey(e)]?.tasksQueue?.size;return{executed:0,executing:0,get queued(){return t??0},failed:0}}}class O extends b{opts;constructor(e,t,r={}){super(e,t,r),this.opts=r}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}destroyWorker(e){this.sendToWorker(e,{kill:1}),e.kill()}sendToWorker(e,t){e.send(t)}registerWorkerMessageListener(e,t){e.on("message",t)}createWorker(){return t.fork(this.opts.env)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,super.workerListener())}get type(){return n.fixed}get worker(){return h.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class C extends b{opts;constructor(e,t,r={}){super(e,t,r),this.opts=r}isMain(){return o.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:1}),await e.terminate()}sendToWorker(e,t){e.postMessage(t)}registerWorkerMessageListener(e,t){e.port2?.on("message",t)}createWorker(){return new o.Worker(this.filePath,{env:o.SHARE_ENV,...this.opts.workerOptions})}afterWorkerSetup(e){const{port1:t,port2:r}=new o.MessageChannel;e.postMessage({parent:t},[t]),e.port1=t,e.port2=r,this.registerWorkerMessageListener(e,super.workerListener())}get type(){return n.fixed}get worker(){return h.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const q="default",z=6e4,U=m.SOFT;class A extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;aliveInterval;constructor(e,t,r,i,o={killBehavior:U,maxInactiveTime:z}){super(e),this.isMain=t,this.mainWorker=i,this.opts=o,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||(this.lastTaskTimestamp=s.performance.now(),this.aliveInterval=setInterval(this.checkAlive.bind(this),(this.opts.maxInactiveTime??z)/2),this.checkAlive.bind(this)()),this.mainWorker?.on("message",this.messageListener.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??U,this.opts.maxInactiveTime=e.maxInactiveTime??z,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e)this.taskFunctions.set(q,e.bind(this));else{if(!g(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[r,s]of Object.entries(e)){if("function"!=typeof s)throw new TypeError("A taskFunctions parameter object value is not a function");this.taskFunctions.set(r,s.bind(this)),t&&(this.taskFunctions.set(q,s.bind(this)),t=!1)}if(t)throw new Error("taskFunctions parameter object is empty")}}}messageListener(e){if(null!=e.id&&null!=e.data){const t=this.getTaskFunction(e.name);"AsyncFunction"===t?.constructor.name?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}else null!=e.parent?this.mainWorker=e.parent:null!=e.kill?(null!=this.aliveInterval&&clearInterval(this.aliveInterval),this.emitDestroy()):null!=e.statistics&&(this.statistics=e.statistics)}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker was not set");return this.mainWorker}checkAlive(){s.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??z)&&this.sendToMainWorker({kill:this.opts.killBehavior})}handleError(e){return e}runSync(e,t){try{let r=this.beginTaskPerformance();const s=e(t.data);r=this.endTaskPerformance(r),this.sendToMainWorker({data:s,taskPerformance:r,id:t.id})}catch(e){const r=this.handleError(e);this.sendToMainWorker({taskError:{message:r,data:t.data},id:t.id})}finally{!this.isMain&&(this.lastTaskTimestamp=s.performance.now())}}runAsync(e,t){let r=this.beginTaskPerformance();e(t.data).then((e=>(r=this.endTaskPerformance(r),this.sendToMainWorker({data:e,taskPerformance:r,id:t.id}),null))).catch((e=>{const r=this.handleError(e);this.sendToMainWorker({taskError:{message:r,data:t.data},id:t.id})})).finally((()=>{!this.isMain&&(this.lastTaskTimestamp=s.performance.now())})).catch(c)}getTaskFunction(e){e=e??q;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(){return{timestamp:s.performance.now(),...this.statistics.elu&&{elu:s.performance.eventLoopUtilization()}}}endTaskPerformance(e){return{...e,...this.statistics.runTime&&{runTime:s.performance.now()-e.timestamp},...this.statistics.elu&&{elu:s.performance.eventLoopUtilization(e.elu)}}}}exports.ClusterWorker=class extends A{constructor(e,r={}){super("worker-cluster-pool:poolifier",t.isPrimary,e,t.worker,r)}sendToMainWorker(e){this.getMainWorker().send(e)}handleError(e){return e instanceof Error?e.message:e}},exports.DynamicClusterPool=class extends O{max;constructor(e,t,r,s={}){super(e,r,s),this.max=t}get type(){return n.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends C{max;constructor(e,t,r,s={}){super(e,r,s),this.max=t}get type(){return n.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=O,exports.FixedThreadPool=C,exports.KillBehaviors=m,exports.Measurements=f,exports.PoolEvents=k,exports.PoolTypes=n,exports.ThreadWorker=class extends A{constructor(e,t={}){super("worker-thread-pool:poolifier",o.isMainThread,e,o.parentPort,t)}sendToMainWorker(e){this.getMainWorker().postMessage(e)}},exports.WorkerChoiceStrategies=T,exports.WorkerTypes=h;
"use strict";var e=require("node:events"),t=require("node:cluster"),r=require("node:crypto"),s=require("node:perf_hooks"),i=require("node:os"),o=require("node:worker_threads"),a=require("node:async_hooks");const n=Object.freeze({fixed:"fixed",dynamic:"dynamic"}),h=Object.freeze({cluster:"cluster",thread:"thread"});class u extends e{}const k=Object.freeze({full:"full",busy:"busy",error:"error",taskError:"taskError"}),c=Object.freeze((()=>{})),d={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},l=e=>{if(Array.isArray(e)&&0===e.length)return 0;if(Array.isArray(e)&&1===e.length)return e[0];const t=e.slice().sort(((e,t)=>e-t));return(t[t.length-1>>1]+t[t.length>>1])/2},g=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),m=Object.freeze({SOFT:"SOFT",HARD:"HARD"});class p extends Array{size;constructor(e=1024,...t){super(),this.checkSize(e),this.size=e,arguments.length>1&&this.push(...t)}push(...e){const t=super.push(...e);return t>this.size&&super.splice(0,t-this.size),this.length}unshift(...e){return super.unshift(...e)>this.size&&super.splice(this.size,e.length),this.length}concat(...e){const t=super.concat(e);return t.size=this.size,t.length>t.size&&t.splice(0,t.length-t.size),t}splice(e,t,...r){let s;return arguments.length>=3&&void 0!==t?(s=super.splice(e,t),this.push(...r)):s=2===arguments.length?super.splice(e,t):super.splice(e),s}resize(e){if(this.checkSize(e),0===e)this.length=0;else if(e<this.size)for(let t=e;t<this.size;t++)super.pop();this.size=e}empty(){return 0===this.length}full(){return this.length===this.size}checkSize(e){if(!Number.isSafeInteger(e))throw new TypeError(`Invalid circular array size: ${e} is not a safe integer`);if(e<0)throw new RangeError(`Invalid circular array size: ${e} < 0`)}}class w{items;head;tail;max;constructor(){this.items={},this.head=0,this.tail=0,this.max=0}get size(){return this.tail-this.head}get maxSize(){return this.max}enqueue(e){return this.items[this.tail]=e,this.tail++,this.size>this.max&&(this.max=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.head];return delete this.items[this.head],this.head++,this.head===this.tail&&(this.head=0,this.tail=0),e}peek(){if(!(this.size<=0))return this.items[this.head]}}const T=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LEAST_USED:"LEAST_USED",LEAST_BUSY:"LEAST_BUSY",LEAST_ELU:"LEAST_ELU",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN",INTERLEAVED_WEIGHTED_ROUND_ROBIN:"INTERLEAVED_WEIGHTED_ROUND_ROBIN"}),f=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class W{pool;opts;toggleFindLastFreeWorkerNodeKey=!1;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:{aggregate:!1,average:!1,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};constructor(e,t=d){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.taskStatisticsRequirements.runTime.average&&!0===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!1,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.runTime.median&&!1===e.runTime?.median&&(this.taskStatisticsRequirements.runTime.average=!0,this.taskStatisticsRequirements.runTime.median=e.runTime.median),this.taskStatisticsRequirements.waitTime.average&&!0===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!1,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.waitTime.median&&!1===e.waitTime?.median&&(this.taskStatisticsRequirements.waitTime.average=!0,this.taskStatisticsRequirements.waitTime.median=e.waitTime.median),this.taskStatisticsRequirements.elu.average&&!0===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!1,this.taskStatisticsRequirements.elu.median=e.elu.median),this.taskStatisticsRequirements.elu.median&&!1===e.elu?.median&&(this.taskStatisticsRequirements.elu.average=!0,this.taskStatisticsRequirements.elu.median=e.elu.median)}setOptions(e){e=e??d,this.setTaskStatisticsRequirements(e),this.opts=e}findFreeWorkerNodeKey(){return this.toggleFindLastFreeWorkerNodeKey?(this.toggleFindLastFreeWorkerNodeKey=!1,this.findLastFreeWorkerNodeKey()):(this.toggleFindLastFreeWorkerNodeKey=!0,this.findFirstFreeWorkerNodeKey())}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].workerUsage.runTime.median:this.pool.workerNodes[e].workerUsage.runTime.average}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].workerUsage.runTime.median:this.pool.workerNodes[e].workerUsage.runTime.average}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].workerUsage.elu.active.median:this.pool.workerNodes[e].workerUsage.elu.active.average}computeDefaultWorkerWeight(){let e=0;for(const t of i.cpus()){const r=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,r))*Math.pow(10,r)}return Math.round(e/i.cpus().length)}findFirstFreeWorkerNodeKey(){return this.pool.workerNodes.findIndex((e=>0===e.workerUsage.tasks.executing))}findLastFreeWorkerNodeKey(){for(let e=this.pool.workerNodes.length-1;e>=0;e--)if(0===this.pool.workerNodes[e].workerUsage.tasks.executing)return e;return-1}}class y extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){let e,t=1/0;for(const[r]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[r]&&this.computeWorkerVirtualTaskEndTimestamp(r);const s=this.workersVirtualTaskEndTimestamp[r];s<t&&(t=s,e=r)}return e}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===f.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class S extends W{strategyPolicy={useDynamicWorker:!0};currentWorkerNodeId=0;currentRoundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.currentWorkerNodeId=0,this.currentRoundId=0,!0}update(){return!0}choose(){let e,t;for(let r=this.currentRoundId;r<this.roundWeights.length;r++)for(let s=this.currentWorkerNodeId;s<this.pool.workerNodes.length;s++){if((this.opts.weights?.[s]??this.defaultWorkerWeight)>=this.roundWeights[r]){e=r,t=s;break}}this.currentRoundId=e??0,this.currentWorkerNodeId=t??0;const r=this.currentWorkerNodeId;return this.currentWorkerNodeId===this.pool.workerNodes.length-1?(this.currentWorkerNodeId=0,this.currentRoundId=this.currentRoundId===this.roundWeights.length-1?0:this.currentRoundId+1):this.currentWorkerNodeId=this.currentWorkerNodeId+1,r}remove(e){return this.currentWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.currentWorkerNodeId=0:this.currentWorkerNodeId>this.pool.workerNodes.length-1&&(this.currentWorkerNodeId=this.pool.workerNodes.length-1,this.currentRoundId=this.currentRoundId===this.roundWeights.length-1?0:this.currentRoundId+1)),!0}setOptions(e){super.setOptions(e),this.roundWeights=this.getRoundWeights()}getRoundWeights(){return null==this.opts.weights?[this.defaultWorkerWeight]:[...new Set(Object.values(this.opts.weights).slice().sort(((e,t)=>e-t)))]}}class N extends W{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){let e,t=1/0;for(const[r,s]of this.pool.workerNodes.entries()){const i=s.workerUsage.runTime.aggregate+s.workerUsage.waitTime.aggregate;if(0===i)return r;i<t&&(t=i,e=r)}return e}remove(){return!0}}class x extends W{constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){const e=this.findFreeWorkerNodeKey();if(-1!==e)return e;let t,r=1/0;for(const[e,s]of this.pool.workerNodes.entries()){const i=s.workerUsage.tasks,o=i.executed+i.executing+i.queued;if(0===o)return e;o<r&&(r=o,t=e)}return t}remove(){return!0}}class v extends W{taskStatisticsRequirements={runTime:{aggregate:!1,average:!1,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){let e,t=1/0;for(const[r,s]of this.pool.workerNodes.entries()){const i=s.workerUsage,o=i.elu?.active.aggregate??0;if(0===o)return r;o<t&&(t=o,e=r)}return e}remove(){return!0}}class R extends W{strategyPolicy={useDynamicWorker:!0};nextWorkerNodeId=0;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeId=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeId;return this.nextWorkerNodeId=this.nextWorkerNodeId===this.pool.workerNodes.length-1?0:this.nextWorkerNodeId+1,e}remove(e){return this.nextWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeId=0:this.nextWorkerNodeId>this.pool.workerNodes.length-1&&(this.nextWorkerNodeId=this.pool.workerNodes.length-1)),!0}}class E extends W{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:{aggregate:!1,average:!1,median:!1},elu:{aggregate:!1,average:!1,median:!1}};currentWorkerNodeId=0;defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=d){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.currentWorkerNodeId=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.currentWorkerNodeId,t=this.workerVirtualTaskRunTime;return t<(this.opts.weights?.[e]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=t+this.getWorkerTaskRunTime(e):(this.currentWorkerNodeId=this.currentWorkerNodeId===this.pool.workerNodes.length-1?0:this.currentWorkerNodeId+1,this.workerVirtualTaskRunTime=0),e}remove(e){return this.currentWorkerNodeId===e&&(0===this.pool.workerNodes.length?this.currentWorkerNodeId=0:this.currentWorkerNodeId>this.pool.workerNodes.length-1&&(this.currentWorkerNodeId=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}}class I{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=T.ROUND_ROBIN,r=d){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[T.ROUND_ROBIN,new(R.bind(this))(e,r)],[T.LEAST_USED,new(x.bind(this))(e,r)],[T.LEAST_BUSY,new(N.bind(this))(e,r)],[T.LEAST_ELU,new(v.bind(this))(e,r)],[T.FAIR_SHARE,new(y.bind(this))(e,r)],[T.WEIGHTED_ROUND_ROBIN,new(E.bind(this))(e,r)],[T.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(S.bind(this))(e,r)]])}getStrategyPolicy(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).strategyPolicy}getTaskStatisticsRequirements(){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).taskStatisticsRequirements}setWorkerChoiceStrategy(e){this.workerChoiceStrategy!==e&&(this.workerChoiceStrategy=e),this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset()}update(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).update(e)}execute(){const e=this.workerChoiceStrategies.get(this.workerChoiceStrategy).choose();if(null==e)throw new Error("Worker node key chosen is null or undefined");return e}remove(e){return this.workerChoiceStrategies.get(this.workerChoiceStrategy).remove(e)}setOptions(e){for(const t of this.workerChoiceStrategies.values())t.setOptions(e)}}class b{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;constructor(e,t,r){if(this.numberOfWorkers=e,this.filePath=t,this.opts=r,!this.isMain())throw new Error("Cannot start a pool from a worker!");this.checkNumberOfWorkers(this.numberOfWorkers),this.checkFilePath(this.filePath),this.checkPoolOptions(this.opts),this.chooseWorkerNode=this.chooseWorkerNode.bind(this),this.executeTask=this.executeTask.bind(this),this.enqueueTask=this.enqueueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new u),this.workerChoiceStrategyContext=new I(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook();for(let e=1;e<=this.numberOfWorkers;e++)this.createAndSetupWorker()}checkFilePath(e){if(null==e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation")}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non safe integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===n.fixed&&0===e)throw new Error("Cannot instantiate a fixed pool with no worker")}checkPoolOptions(e){if(!g(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??T.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??d,this.checkValidWorkerChoiceStrategyOptions(this.opts.workerChoiceStrategyOptions),this.opts.restartWorkerOnError=e.restartWorkerOnError??!0,this.opts.enableEvents=e.enableEvents??!0,this.opts.enableTasksQueue=e.enableTasksQueue??!1,this.opts.enableTasksQueue&&(this.checkValidTasksQueueOptions(e.tasksQueueOptions),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e.tasksQueueOptions))}checkValidWorkerChoiceStrategy(e){if(!Object.values(T).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!g(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node")}checkValidTasksQueueOptions(e){if(null!=e&&!g(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(e?.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}get info(){return{type:this.type,worker:this.worker,minSize:this.minSize,maxSize:this.maxSize,workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.workerUsage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.workerUsage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.executing),0),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.tasksQueue.size),0),maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+t.tasksQueue.maxSize),0),failedTasks:this.workerNodes.reduce(((e,t)=>e+t.workerUsage.tasks.failed),0)}}getWorkerNodeKey(e){return this.workerNodes.findIndex((t=>t.worker===e))}setWorkerChoiceStrategy(e,t){this.checkValidWorkerChoiceStrategy(e),this.opts.workerChoiceStrategy=e,this.workerChoiceStrategyContext.setWorkerChoiceStrategy(this.opts.workerChoiceStrategy),null!=t&&this.setWorkerChoiceStrategyOptions(t);for(const e of this.workerNodes)this.setWorkerNodeTasksUsage(e,this.getWorkerUsage(e.worker)),this.setWorkerStatistics(e.worker)}setWorkerChoiceStrategyOptions(e){this.checkValidWorkerChoiceStrategyOptions(e),this.opts.workerChoiceStrategyOptions=e,this.workerChoiceStrategyContext.setOptions(this.opts.workerChoiceStrategyOptions)}enableTasksQueue(e,t){!0!==this.opts.enableTasksQueue||e||this.flushTasksQueues(),this.opts.enableTasksQueue=e,this.setTasksQueueOptions(t)}setTasksQueueOptions(e){!0===this.opts.enableTasksQueue?(this.checkValidTasksQueueOptions(e),this.opts.tasksQueueOptions=this.buildTasksQueueOptions(e)):null!=this.opts.tasksQueueOptions&&delete this.opts.tasksQueueOptions}buildTasksQueueOptions(e){return{concurrency:e?.concurrency??1}}get full(){return this.workerNodes.length>=this.maxSize}internalBusy(){return-1===this.workerNodes.findIndex((e=>0===e.workerUsage.tasks.executing))}async execute(e,t){const i=s.performance.now(),o=this.chooseWorkerNode(),a={name:t,data:e??{},timestamp:i,id:r.randomUUID()},n=new Promise(((e,t)=>{this.promiseResponseMap.set(a.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].workerUsage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,a):this.executeTask(o,a),this.workerChoiceStrategyContext.update(o),this.checkAndEmitEvents(),n}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t),await this.destroyWorker(e.worker)})))}setupHook(){}beforeTaskExecutionHook(e,t){const r=this.workerNodes[e].workerUsage;++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const r=this.workerNodes[this.getWorkerNodeKey(e)].workerUsage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const r=e.tasks;--r.executing,++r.executed,null!=t.taskError&&++r.failed}updateRunTimeWorkerUsage(e,t){this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&(e.runTime.aggregate+=t.taskPerformance?.runTime??0,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.average&&0!==e.tasks.executed&&(e.runTime.average=e.runTime.aggregate/(e.tasks.executed-e.tasks.failed)),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&null!=t.taskPerformance?.runTime&&(e.runTime.history.push(t.taskPerformance.runTime),e.runTime.median=l(e.runTime.history)))}updateWaitTimeWorkerUsage(e,t){const r=s.performance.now(),i=r-(t.timestamp??r);this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&(e.waitTime.aggregate+=i??0,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.average&&0!==e.tasks.executed&&(e.waitTime.average=e.waitTime.aggregate/(e.tasks.executed-e.tasks.failed)),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&null!=i&&(e.waitTime.history.push(i),e.waitTime.median=l(e.waitTime.history)))}updateEluWorkerUsage(e,t){if(this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate){if(null!=e.elu&&null!=t.taskPerformance?.elu?(e.elu.idle.aggregate+=t.taskPerformance.elu.idle,e.elu.active.aggregate+=t.taskPerformance.elu.active,e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2):null!=t.taskPerformance?.elu&&(e.elu.idle.aggregate=t.taskPerformance.elu.idle,e.elu.active.aggregate=t.taskPerformance.elu.active,e.elu.utilization=t.taskPerformance.elu.utilization),this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.average&&0!==e.tasks.executed){const t=e.tasks.executed-e.tasks.failed;e.elu.idle.average=e.elu.idle.aggregate/t,e.elu.active.average=e.elu.active.aggregate/t}this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.median&&null!=t.taskPerformance?.elu&&(e.elu.idle.history.push(t.taskPerformance.elu.idle),e.elu.active.history.push(t.taskPerformance.elu.active),e.elu.idle.median=l(e.elu.idle.history),e.elu.active.median=l(e.elu.active.history))}}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorker();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return this.getWorkerNodeKey(e)}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===n.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??c),e.on("error",this.opts.errorHandler??c),e.on("error",(e=>{null!=this.emitter&&this.emitter.emit(k.error,e),!0===this.opts.restartWorkerOnError&&this.createAndSetupWorker()})),e.on("online",this.opts.onlineHandler??c),e.on("exit",this.opts.exitHandler??c),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.pushWorkerNode(e),this.setWorkerStatistics(e),this.afterWorkerSetup(e),e}createAndSetupDynamicWorker(){const e=this.createAndSetupWorker();return this.registerWorkerMessageListener(e,(t=>{const r=this.getWorkerNodeKey(e);var s;s=m.HARD,(t.kill===s||null!=t.kill&&0===this.workerNodes[r].workerUsage.tasks.executing)&&(this.flushTasksQueue(r),this.destroyWorker(e))})),e}workerListener(){return e=>{if(null!=e.id){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(t.reject(e.taskError.message),null!=this.emitter&&this.emitter.emit(k.taskError,e.taskError)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const r=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(r)>0&&this.executeTask(r,this.dequeueTask(r))}}}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter?.emit(k.busy,this.info),this.type===n.dynamic&&this.full&&this.emitter?.emit(k.full,this.info))}setWorkerNodeTasksUsage(e,t){e.workerUsage=t}pushWorkerNode(e){return this.workerNodes.push({worker:e,workerUsage:this.getWorkerUsage(e),tasksQueue:new w})}removeWorkerNode(e){const t=this.getWorkerNodeKey(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(this.workerNodes[e].worker,t)}enqueueTask(e,t){return this.workerNodes[e].tasksQueue.enqueue(t)}dequeueTask(e){return this.workerNodes[e].tasksQueue.dequeue()}tasksQueueSize(e){return this.workerNodes[e].tasksQueue.size}flushTasksQueue(e){if(this.tasksQueueSize(e)>0)for(let t=0;t<this.tasksQueueSize(e);t++)this.executeTask(e,this.dequeueTask(e))}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}setWorkerStatistics(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate}})}getWorkerUsage(e){return{tasks:this.getTaskStatistics(e),runTime:{aggregate:0,average:0,median:0,history:new p},waitTime:{aggregate:0,average:0,median:0,history:new p},elu:{idle:{aggregate:0,average:0,median:0,history:new p},active:{aggregate:0,average:0,median:0,history:new p},utilization:0}}}getTaskStatistics(e){const t=this.workerNodes[this.getWorkerNodeKey(e)]?.tasksQueue?.size;return{executed:0,executing:0,get queued(){return t??0},failed:0}}}class C extends b{opts;constructor(e,t,r={}){super(e,t,r),this.opts=r}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}destroyWorker(e){this.sendToWorker(e,{kill:1}),e.kill()}sendToWorker(e,t){e.send(t)}registerWorkerMessageListener(e,t){e.on("message",t)}createWorker(){return t.fork(this.opts.env)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,super.workerListener())}get type(){return n.fixed}get worker(){return h.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class O extends b{opts;constructor(e,t,r={}){super(e,t,r),this.opts=r}isMain(){return o.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:1}),await e.terminate()}sendToWorker(e,t){e.postMessage(t)}registerWorkerMessageListener(e,t){e.port2?.on("message",t)}createWorker(){return new o.Worker(this.filePath,{env:o.SHARE_ENV,...this.opts.workerOptions})}afterWorkerSetup(e){const{port1:t,port2:r}=new o.MessageChannel;e.postMessage({parent:t},[t]),e.port1=t,e.port2=r,this.registerWorkerMessageListener(e,super.workerListener())}get type(){return n.fixed}get worker(){return h.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const q="default",z=6e4,U=m.SOFT;class P extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;aliveInterval;constructor(e,t,r,i,o={killBehavior:U,maxInactiveTime:z}){super(e),this.isMain=t,this.mainWorker=i,this.opts=o,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||(this.lastTaskTimestamp=s.performance.now(),this.aliveInterval=setInterval(this.checkAlive.bind(this),(this.opts.maxInactiveTime??z)/2),this.checkAlive.bind(this)()),this.mainWorker?.on("message",this.messageListener.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??U,this.opts.maxInactiveTime=e.maxInactiveTime??z,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e)this.taskFunctions.set(q,e.bind(this));else{if(!g(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[r,s]of Object.entries(e)){if("function"!=typeof s)throw new TypeError("A taskFunctions parameter object value is not a function");this.taskFunctions.set(r,s.bind(this)),t&&(this.taskFunctions.set(q,s.bind(this)),t=!1)}if(t)throw new Error("taskFunctions parameter object is empty")}}}messageListener(e){if(null!=e.id&&null!=e.data){const t=this.getTaskFunction(e.name);"AsyncFunction"===t?.constructor.name?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}else null!=e.parent?this.mainWorker=e.parent:null!=e.kill?(null!=this.aliveInterval&&clearInterval(this.aliveInterval),this.emitDestroy()):null!=e.statistics&&(this.statistics=e.statistics)}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker was not set");return this.mainWorker}checkAlive(){s.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??z)&&this.sendToMainWorker({kill:this.opts.killBehavior})}handleError(e){return e}runSync(e,t){try{let r=this.beginTaskPerformance();const s=e(t.data);r=this.endTaskPerformance(r),this.sendToMainWorker({data:s,taskPerformance:r,id:t.id})}catch(e){const r=this.handleError(e);this.sendToMainWorker({taskError:{message:r,data:t.data},id:t.id})}finally{!this.isMain&&(this.lastTaskTimestamp=s.performance.now())}}runAsync(e,t){let r=this.beginTaskPerformance();e(t.data).then((e=>(r=this.endTaskPerformance(r),this.sendToMainWorker({data:e,taskPerformance:r,id:t.id}),null))).catch((e=>{const r=this.handleError(e);this.sendToMainWorker({taskError:{message:r,data:t.data},id:t.id})})).finally((()=>{!this.isMain&&(this.lastTaskTimestamp=s.performance.now())})).catch(c)}getTaskFunction(e){e=e??q;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(){return{timestamp:s.performance.now(),...this.statistics.elu&&{elu:s.performance.eventLoopUtilization()}}}endTaskPerformance(e){return{...e,...this.statistics.runTime&&{runTime:s.performance.now()-e.timestamp},...this.statistics.elu&&{elu:s.performance.eventLoopUtilization(e.elu)}}}}exports.ClusterWorker=class extends P{constructor(e,r={}){super("worker-cluster-pool:poolifier",t.isPrimary,e,t.worker,r)}sendToMainWorker(e){this.getMainWorker().send(e)}handleError(e){return e instanceof Error?e.message:e}},exports.DynamicClusterPool=class extends C{max;constructor(e,t,r,s={}){super(e,r,s),this.max=t}get type(){return n.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends O{max;constructor(e,t,r,s={}){super(e,r,s),this.max=t}get type(){return n.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=C,exports.FixedThreadPool=O,exports.KillBehaviors=m,exports.Measurements=f,exports.PoolEvents=k,exports.PoolTypes=n,exports.ThreadWorker=class extends P{constructor(e,t={}){super("worker-thread-pool:poolifier",o.isMainThread,e,o.parentPort,t)}sendToMainWorker(e){this.getMainWorker().postMessage(e)}},exports.WorkerChoiceStrategies=T,exports.WorkerTypes=h;

27

lib/pools/abstract-pool.d.ts

@@ -96,2 +96,7 @@ import type { MessageValue, PromiseResponseWrapper } from '../utility-types';

protected abstract get busy(): boolean;
/**
* Whether worker nodes are executing at least one task.
*
* @returns Worker nodes busyness boolean status.
*/
protected internalBusy(): boolean;

@@ -103,3 +108,3 @@ /** @inheritDoc */

/**
* Shutdowns the given worker.
* Terminates the given worker.
*

@@ -143,8 +148,14 @@ * @param worker - A worker within `workerNodes`.

*
* The default worker choice strategy uses a round robin algorithm to distribute the load.
* The default worker choice strategy uses a round robin algorithm to distribute the tasks.
*
* @returns The worker node key
*/
protected chooseWorkerNode(): number;
private chooseWorkerNode;
/**
* Conditions for dynamic worker creation.
*
* @returns Whether to create a dynamic worker or not.
*/
private shallCreateDynamicWorker;
/**
* Sends a message to the given worker.

@@ -164,3 +175,5 @@ *

/**
* Returns a newly created worker.
* Creates a new worker.
*
* @returns Newly created worker.
*/

@@ -183,2 +196,8 @@ protected abstract createWorker(): Worker;

/**
* Creates a new dynamic worker and sets it up completely in the pool worker nodes.
*
* @returns New, completely set up dynamic worker.
*/
protected createAndSetupDynamicWorker(): Worker;
/**
* This function is the listener registered for each worker message.

@@ -185,0 +204,0 @@ *

2

lib/pools/pool.d.ts

@@ -168,3 +168,3 @@ /// <reference types="node" />

/**
* Shutdowns every current worker in this pool.
* Terminate every current worker in this pool.
*/

@@ -171,0 +171,0 @@ destroy: () => Promise<void>;

4

lib/pools/selection-strategies/abstract-worker-choice-strategy.d.ts
import type { IPool } from '../pool';
import type { IWorker } from '../worker';
import type { IWorkerChoiceStrategy, TaskStatisticsRequirements, WorkerChoiceStrategyOptions } from './selection-strategies-types';
import type { IWorkerChoiceStrategy, StrategyPolicy, TaskStatisticsRequirements, WorkerChoiceStrategyOptions } from './selection-strategies-types';
/**

@@ -19,2 +19,4 @@ * Worker choice strategy abstract base class.

/** @inheritDoc */
readonly strategyPolicy: StrategyPolicy;
/** @inheritDoc */
readonly taskStatisticsRequirements: TaskStatisticsRequirements;

@@ -21,0 +23,0 @@ /**

4

lib/pools/selection-strategies/interleaved-weighted-round-robin-worker-choice-strategy.d.ts
import type { IWorker } from '../worker';
import type { IPool } from '../pool';
import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy';
import type { IWorkerChoiceStrategy, WorkerChoiceStrategyOptions } from './selection-strategies-types';
import type { IWorkerChoiceStrategy, StrategyPolicy, WorkerChoiceStrategyOptions } from './selection-strategies-types';
/**

@@ -13,2 +13,4 @@ * Selects the next worker with an interleaved weighted round robin scheduling algorithm.

export declare class InterleavedWeightedRoundRobinWorkerChoiceStrategy<Worker extends IWorker, Data = unknown, Response = unknown> extends AbstractWorkerChoiceStrategy<Worker, Data, Response> implements IWorkerChoiceStrategy {
/** @inheritDoc */
readonly strategyPolicy: StrategyPolicy;
/**

@@ -15,0 +17,0 @@ * Worker node id where the current task will be submitted.

4

lib/pools/selection-strategies/round-robin-worker-choice-strategy.d.ts
import type { IPool } from '../pool';
import type { IWorker } from '../worker';
import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy';
import type { IWorkerChoiceStrategy, WorkerChoiceStrategyOptions } from './selection-strategies-types';
import type { IWorkerChoiceStrategy, StrategyPolicy, WorkerChoiceStrategyOptions } from './selection-strategies-types';
/**

@@ -13,2 +13,4 @@ * Selects the next worker in a round robin fashion.

export declare class RoundRobinWorkerChoiceStrategy<Worker extends IWorker, Data = unknown, Response = unknown> extends AbstractWorkerChoiceStrategy<Worker, Data, Response> implements IWorkerChoiceStrategy {
/** @inheritDoc */
readonly strategyPolicy: StrategyPolicy;
/**

@@ -15,0 +17,0 @@ * Id of the next worker node.

15

lib/pools/selection-strategies/selection-strategies-types.d.ts

@@ -136,2 +136,13 @@ /**

/**
* Strategy policy.
*
* @internal
*/
export interface StrategyPolicy {
/**
* Expect direct usage of dynamic worker.
*/
useDynamicWorker: boolean;
}
/**
* Worker choice strategy interface.

@@ -141,2 +152,6 @@ */

/**
* Strategy policy.
*/
readonly strategyPolicy: StrategyPolicy;
/**
* Tasks statistics requirements.

@@ -143,0 +158,0 @@ */

4

lib/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.d.ts
import type { IWorker } from '../worker';
import type { IPool } from '../pool';
import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy';
import type { IWorkerChoiceStrategy, TaskStatisticsRequirements, WorkerChoiceStrategyOptions } from './selection-strategies-types';
import type { IWorkerChoiceStrategy, StrategyPolicy, TaskStatisticsRequirements, WorkerChoiceStrategyOptions } from './selection-strategies-types';
/**

@@ -15,2 +15,4 @@ * Selects the next worker with a weighted round robin scheduling algorithm.

/** @inheritDoc */
readonly strategyPolicy: StrategyPolicy;
/** @inheritDoc */
readonly taskStatisticsRequirements: TaskStatisticsRequirements;

@@ -17,0 +19,0 @@ /**

8

lib/pools/selection-strategies/worker-choice-strategy-context.d.ts
import type { IPool } from '../pool';
import type { IWorker } from '../worker';
import type { TaskStatisticsRequirements, WorkerChoiceStrategy, WorkerChoiceStrategyOptions } from './selection-strategies-types';
import type { StrategyPolicy, TaskStatisticsRequirements, WorkerChoiceStrategy, WorkerChoiceStrategyOptions } from './selection-strategies-types';
/**

@@ -23,2 +23,8 @@ * The worker choice strategy context.

/**
* Gets the strategy policy in the context.
*
* @returns The strategy policy.
*/
getStrategyPolicy(): StrategyPolicy;
/**
* Gets the worker choice strategy task statistics requirements in the context.

@@ -25,0 +31,0 @@ *

6

package.json
{
"name": "poolifier",
"version": "2.6.1",
"version": "2.6.2",
"description": "A fast, easy to use Node.js Worker Thread Pool and Cluster Pool implementation",

@@ -87,3 +87,3 @@ "license": "MIT",

"@rollup/plugin-typescript": "^11.1.1",
"@types/node": "^20.2.6",
"@types/node": "^20.3.0",
"@typescript-eslint/eslint-plugin": "^5.59.9",

@@ -112,3 +112,3 @@ "@typescript-eslint/parser": "^5.59.9",

"release-it": "^15.11.0",
"rollup": "^3.24.1",
"rollup": "^3.25.0",
"rollup-plugin-analyzer": "^4.0.0",

@@ -115,0 +115,0 @@ "rollup-plugin-command": "^1.1.3",

2

README.md

@@ -290,3 +290,3 @@ <div align="center">

Choose your task here [2.5.x](https://github.com/orgs/poolifier/projects/1), propose an idea, a fix, an improvement.
Choose your task here [2.6.x](https://github.com/orgs/poolifier/projects/1), propose an idea, a fix, an improvement.

@@ -293,0 +293,0 @@ See [CONTRIBUTING](CONTRIBUTING.md) guidelines.

lib/index.mjs

Sorry, the diff of this file is not supported yet

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