poolifier - npm Package Compare versions

Comparing version 2.6.19 to 2.6.20

./lib/index.js

@@ -1,1 +0,1 @@
-"use strict";var e=require("node:events"),t=require("node:cluster"),s=require("node:crypto"),r=require("node:perf_hooks"),i=require("node:fs"),o=require("node:os"),n=require("node:worker_threads"),a=require("node:async_hooks");function h(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var u=h(o);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class c extends e.EventEmitter{}const d=Object.freeze({full:"full",ready:"ready",busy:"busy",error:"error",taskError:"taskError"}),l="default",m=Object.freeze((()=>{})),g={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},p={aggregate:!1,average:!1,median:!1},w=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},y=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},f=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),T=(e,t,s,r)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=Math.min(s,e.minimum??1/0),e.maximum=Math.max(s,e.maximum??-1/0),t.average&&0!==r&&(e.average=e.aggregate/r),t.median&&null!=s&&(e.history.push(s),e.median=w(e.history)))},W=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),x=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"}),N=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class S{pool;opts;nextWorkerNodeKey=0;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:p,waitTime:p,elu:p};constructor(e,t=g){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}setOptions(e){this.opts=e??g,this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime?.median??0:this.pool.workerNodes[e].usage.runTime?.average??0}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime?.median??0:this.pool.workerNodes[e].usage.waitTime?.average??0}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active?.median??0:this.pool.workerNodes[e].usage.elu.active?.average??0}computeDefaultWorkerWeight(){let e=0;for(const t of o.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/o.cpus().length)}}class E extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){return this.fairShareNextWorkerNodeKey()}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}fairShareNextWorkerNodeKey(){let e=1/0;for(const[t]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[t]&&this.computeWorkerVirtualTaskEndTimestamp(t);const s=this.workersVirtualTaskEndTimestamp[t];this.isWorkerNodeReady(t)&&s<e&&(e=s,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===N.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class v extends S{strategyPolicy={useDynamicWorker:!0};roundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.nextWorkerNodeKey=0,this.roundId=0,!0}update(){return!0}choose(){let e,t;for(let s=this.roundId;s<this.roundWeights.length;s++)for(let r=this.nextWorkerNodeKey;r<this.pool.workerNodes.length;r++){const i=this.opts.weights?.[r]??this.defaultWorkerWeight;if(this.isWorkerNodeReady(r)&&i>=this.roundWeights[s]){e=s,t=r;break}}this.roundId=e??0,this.nextWorkerNodeKey=t??0;const s=this.nextWorkerNodeKey;return this.nextWorkerNodeKey===this.pool.workerNodes.length-1?(this.nextWorkerNodeKey=0,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1):this.nextWorkerNodeKey=this.nextWorkerNodeKey+1,s}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+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 R extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:p};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastBusyNextWorkerNodeKey()}remove(){return!0}leastBusyNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=(s.usage.runTime?.aggregate??0)+(s.usage.waitTime?.aggregate??0);if(this.isWorkerNodeReady(t)&&0===r){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&r<e&&(e=r,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class C extends S{constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastUsedNextWorkerNodeKey()}remove(){return!0}leastUsedNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage.tasks,i=r.executed+r.executing+r.queued;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class b extends S{taskStatisticsRequirements={runTime:p,waitTime:p,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastEluNextWorkerNodeKey()}remove(){return!0}leastEluNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage,i=r.elu?.active?.aggregate??0;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class I extends S{strategyPolicy={useDynamicWorker:!0};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeKey=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.roundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.nextWorkerNodeKey}}class O extends S{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:p};defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.nextWorkerNodeKey=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.weightedRoundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.workerVirtualTaskRunTime;return e<(this.opts.weights?.[this.nextWorkerNodeKey]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=e+this.getWorkerTaskRunTime(this.nextWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.workerVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class z{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=x.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[x.ROUND_ROBIN,new(I.bind(this))(e,s)],[x.LEAST_USED,new(C.bind(this))(e,s)],[x.LEAST_BUSY,new(R.bind(this))(e,s)],[x.LEAST_ELU,new(b.bind(this))(e,s)],[x.FAIR_SHARE,new(E.bind(this))(e,s)],[x.WEIGHTED_ROUND_ROBIN,new(O.bind(this))(e,s)],[x.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(v.bind(this))(e,s)]])}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 M 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,...s){let r;return arguments.length>=3&&void 0!==t?(r=super.splice(e,t),this.push(...s)):r=2===arguments.length?super.splice(e,t):super.splice(e),r}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 q{items;offset;size;maxSize;constructor(){this.clear()}enqueue(e){return this.items.push(e),++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.offset];return 2*++this.offset>=this.items.length&&(this.items=this.items.slice(this.offset),this.offset=0),--this.size,e}peek(){if(!(this.size<=0))return this.items[this.offset]}clear(){this.items=[],this.offset=0,this.size=0,this.maxSize=0}[Symbol.iterator](){const e=this.items;let t=this.offset;return{next:()=>{if(t>=e.length)return{value:void 0,done:!0};const s=e[t];return++t,{value:s,done:!1}}}}}const K=Object.freeze({cluster:"cluster",thread:"thread"});class A{worker;info;usage;tasksUsage;tasksQueue;constructor(e,t){this.worker=e,this.info=this.initWorkerInfo(e,t),this.usage=this.initWorkerUsage(),this.tasksUsage=new Map,this.tasksQueue=new q}tasksQueueSize(){return this.tasksQueue.size}tasksQueueMaxSize(){return this.tasksQueue.maxSize}enqueueTask(e){return this.tasksQueue.enqueue(e)}dequeueTask(){return this.tasksQueue.dequeue()}clearTasksQueue(){this.tasksQueue.clear()}resetUsage(){this.usage=this.initWorkerUsage(),this.tasksUsage.clear()}closeChannel(){null!=this.info.messageChannel&&(this.info.messageChannel?.port1.unref(),this.info.messageChannel?.port2.unref(),this.info.messageChannel?.port1.close(),this.info.messageChannel?.port2.close(),delete this.info.messageChannel)}getTaskWorkerUsage(e){return this.tasksUsage.has(e)||this.tasksUsage.set(e,this.initTaskWorkerUsage(e)),this.tasksUsage.get(e)}initWorkerInfo(e,t){return{id:this.getWorkerId(e,t),type:t,dynamic:!1,ready:!1,...t===K.thread&&{messageChannel:new n.MessageChannel}}}initWorkerUsage(){const e=()=>this.tasksQueueSize(),t=()=>this.tasksQueueMaxSize();return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}initTaskWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)s.name===e&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class P{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;starting;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!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 c),this.workerChoiceStrategyContext=new z(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.startTimestamp=r.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!i.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}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===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!f(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??x.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??g,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(x).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!f(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(N).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!f(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e.concurrency))throw new TypeError("Invalid worker tasks concurrency: must be an integer");if(null!=e?.concurrency&&e.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorker()}get info(){return{version:"2.6.19",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:y(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0),maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0),failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.runTime?.median??0))))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.waitTime?.median??0))))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(r.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}getWorkerById(e){return this.workerNodes.find((t=>t.info.id===e))?.worker}checkMessageWorkerId(e){if(null!=e.workerId&&null==this.getWorkerById(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}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)e.resetUsage(),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.usage.tasks.executing))}async execute(e,t){const i=r.performance.now(),o=this.chooseWorkerNode(),n={name:t??l,data:e??{},timestamp:i,workerId:this.getWorkerInfo(o).id,id:s.randomUUID()},a=new Promise(((e,t)=>{this.promiseResponseMap.set(n.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].usage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,n):this.executeTask(o,n),this.checkAndEmitEvents(),a}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t);const s=new Promise((t=>{e.worker.on("exit",(()=>{t()}))}));await this.destroyWorker(e.worker),await s})))}setupHook(){}beforeTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.name);++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const s=this.getWorkerNodeKey(e),r=this.workerNodes[s].usage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t);const i=this.workerNodes[s].getTaskWorkerUsage(t.taskPerformance?.name??l);this.updateTaskStatisticsWorkerUsage(i,t),this.updateRunTimeWorkerUsage(i,t),this.updateEluWorkerUsage(i,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){T(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0,e.tasks.executed)}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);T(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,i,e.tasks.executed)}updateEluWorkerUsage(e,t){const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;T(e.elu.active,s,t.taskPerformance?.elu?.active??0,e.tasks.executed),T(e.elu.idle,s,t.taskPerformance?.elu?.idle??0,e.tasks.executed),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}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===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKey(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorker():this.createAndSetupWorker()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??m),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.addWorkerNode(e),this.afterWorkerSetup(e),e}createAndSetupDynamicWorker(){const e=this.createAndSetupWorker();this.registerWorkerMessageListener(e,(t=>{const s=this.getWorkerNodeKey(e);var r;r=W.HARD,(t.kill===r||null!=t.kill&&(!1===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing||!0===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing&&0===this.tasksQueueSize(s)))&&this.destroyWorker(e)}));const t=this.getWorkerInfoByWorker(e);return t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),this.sendToWorker(e,{checkActive:!0,workerId:t.id}),e}afterWorkerSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.setWorkerStatistics(e)}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0;for(const[r,i]of this.workerNodes.entries()){const o=this.getWorkerInfo(r);if(r!==e&&o.ready&&0===i.usage.tasks.queued){t=r;break}r!==e&&o.ready&&i.usage.tasks.queued<s&&(s=i.usage.tasks.queued,t=r)}this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.id&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){this.getWorkerInfoByWorker(this.getWorkerById(e.workerId)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const s=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&this.executeTask(s,this.dequeueTask(s)),this.workerChoiceStrategyContext.update(s)}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter.emit(d.busy,this.info),this.type===k.dynamic&&this.full&&this.emitter.emit(d.full,this.info))}getWorkerInfo(e){return this.workerNodes[e].info}getWorkerInfoByWorker(e){const t=this.getWorkerNodeKey(e);if(-1===t)throw new Error("Worker not found");return this.workerNodes[t].info}addWorkerNode(e){const t=new A(e,this.worker);return this.starting&&(t.info.ready=!0),this.workerNodes.push(t)}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].enqueueTask(t)}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}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},workerId:this.getWorkerInfoByWorker(e).id})}}class Q extends P{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.id}),e.on("disconnect",(()=>{e.kill()})),e.disconnect()}sendToWorker(e,t){e.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:e.id})}registerWorkerMessageListener(e,t){e.on("message",t)}createWorker(){return t.fork(this.opts.env)}get type(){return k.fixed}get worker(){return K.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class U extends P{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return n.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.threadId}),this.workerNodes[this.getWorkerNodeKey(e)].closeChannel(),await e.terminate()}sendToWorker(e,t){this.getWorkerInfoByWorker(e).messageChannel.port1.postMessage(t)}sendStartupMessageToWorker(e){const t=this.getWorkerInfoByWorker(e).messageChannel.port2;e.postMessage({ready:!1,workerId:e.threadId,port:t},[t])}registerWorkerMessageListener(e,t){this.getWorkerInfoByWorker(e).messageChannel.port1.on("message",t)}createWorker(){return new n.Worker(this.filePath,{env:n.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return K.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const D=6e4,F=W.SOFT;class B extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:F,maxInactiveTime:D}){super(e),this.isMain=t,this.mainWorker=s,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||this.getMainWorker()?.on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??F,this.opts.maxInactiveTime=e.maxInactiveTime??D,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(l,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!f(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){if("string"!=typeof s)throw new TypeError("A taskFunctions parameter object key is not a string");if("function"!=typeof r)throw new TypeError("A taskFunctions parameter object value is not a function");const e=r.bind(this);t&&(this.taskFunctions.set(l,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");return this.taskFunctions.has(e)}addTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(l)&&this.taskFunctions.set(l,s),this.taskFunctions.set(e,s),!0}catch{return!1}}removeTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(l))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return Array.from(this.taskFunctions.keys())}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(l,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){e.workerId===this.id&&(null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?!this.isMain&&e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.id&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e))}handleKillMessage(e){!this.isMain&&this.stopCheckActive(),this.emitDestroy()}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??D)/2),this.activeInterval.unref()}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??D)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}handleError(e){return e instanceof Error?e.message:e}run(e){if(this.isMain)throw new Error("Cannot run a task in the main worker");const t=this.getTaskFunction(e.name);(e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name)(t)?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}runSync(e,t){try{let s=this.beginTaskPerformance(t.name);const r=e(t.data);s=this.endTaskPerformance(s),this.sendToMainWorker({data:r,taskPerformance:s,workerId:this.id,id:t.id})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,id:t.id})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){let s=this.beginTaskPerformance(t.name);e(t.data).then((e=>(s=this.endTaskPerformance(s),this.sendToMainWorker({data:e,taskPerformance:s,workerId:this.id,id:t.id}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,id:t.id})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}getTaskFunction(e){e=e??l;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(e){return this.checkStatistics(),{name:e??l,timestamp:r.performance.now(),...this.statistics.elu&&{elu:r.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:r.performance.now()-e.timestamp},...this.statistics.elu&&{elu:r.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}exports.ClusterWorker=class extends B{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,t.worker,e,s)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||(this.getMainWorker()?.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends Q{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends U{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=Q,exports.FixedThreadPool=U,exports.KillBehaviors=W,exports.Measurements=N,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends B{port;constructor(e,t={}){super("worker-thread-pool:poolifier",n.isMainThread,n.parentPort,e,t)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||null==e.port||(this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return n.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=x,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=u.availableParallelism()}catch{const t=u.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};
+"use strict";var e=require("node:events"),t=require("node:cluster"),s=require("node:crypto"),r=require("node:perf_hooks"),i=require("node:fs"),o=require("node:os"),n=require("node:worker_threads"),a=require("node:async_hooks");function h(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var u=h(o);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class c extends e.EventEmitter{}const d=Object.freeze({full:"full",ready:"ready",busy:"busy",error:"error",taskError:"taskError"}),l="default",m=Object.freeze((()=>{})),g={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},p={aggregate:!1,average:!1,median:!1},w=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},y=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},f=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),T=(e,t,s,r)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=Math.min(s,e.minimum??1/0),e.maximum=Math.max(s,e.maximum??-1/0),t.average&&0!==r&&(e.average=e.aggregate/r),t.median&&null!=s&&(e.history.push(s),e.median=w(e.history)))},W=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),N=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"}),x=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class S{pool;opts;nextWorkerNodeKey=0;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:p,waitTime:p,elu:p};constructor(e,t=g){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}setOptions(e){this.opts=e??g,this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime?.median??0:this.pool.workerNodes[e].usage.runTime?.average??0}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime?.median??0:this.pool.workerNodes[e].usage.waitTime?.average??0}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active?.median??0:this.pool.workerNodes[e].usage.elu.active?.average??0}computeDefaultWorkerWeight(){let e=0;for(const t of o.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/o.cpus().length)}}class E extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){return this.fairShareNextWorkerNodeKey()}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}fairShareNextWorkerNodeKey(){let e=1/0;for(const[t]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[t]&&this.computeWorkerVirtualTaskEndTimestamp(t);const s=this.workersVirtualTaskEndTimestamp[t];this.isWorkerNodeReady(t)&&s<e&&(e=s,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===x.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class C extends S{strategyPolicy={useDynamicWorker:!0};roundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.nextWorkerNodeKey=0,this.roundId=0,!0}update(){return!0}choose(){let e,t;for(let s=this.roundId;s<this.roundWeights.length;s++)for(let r=this.nextWorkerNodeKey;r<this.pool.workerNodes.length;r++){const i=this.opts.weights?.[r]??this.defaultWorkerWeight;if(this.isWorkerNodeReady(r)&&i>=this.roundWeights[s]){e=s,t=r;break}}this.roundId=e??0,this.nextWorkerNodeKey=t??0;const s=this.nextWorkerNodeKey;return this.nextWorkerNodeKey===this.pool.workerNodes.length-1?(this.nextWorkerNodeKey=0,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1):this.nextWorkerNodeKey=this.nextWorkerNodeKey+1,s}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+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 b extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:p};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastBusyNextWorkerNodeKey()}remove(){return!0}leastBusyNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=(s.usage.runTime?.aggregate??0)+(s.usage.waitTime?.aggregate??0);if(this.isWorkerNodeReady(t)&&0===r){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&r<e&&(e=r,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class v extends S{constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastUsedNextWorkerNodeKey()}remove(){return!0}leastUsedNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage.tasks,i=r.executed+r.executing+r.queued;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class R extends S{taskStatisticsRequirements={runTime:p,waitTime:p,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastEluNextWorkerNodeKey()}remove(){return!0}leastEluNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage,i=r.elu?.active?.aggregate??0;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class I extends S{strategyPolicy={useDynamicWorker:!0};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeKey=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.roundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.nextWorkerNodeKey}}class O extends S{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:p};defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.nextWorkerNodeKey=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.weightedRoundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.workerVirtualTaskRunTime;return e<(this.opts.weights?.[this.nextWorkerNodeKey]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=e+this.getWorkerTaskRunTime(this.nextWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.workerVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class z{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=N.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[N.ROUND_ROBIN,new(I.bind(this))(e,s)],[N.LEAST_USED,new(v.bind(this))(e,s)],[N.LEAST_BUSY,new(b.bind(this))(e,s)],[N.LEAST_ELU,new(R.bind(this))(e,s)],[N.FAIR_SHARE,new(E.bind(this))(e,s)],[N.WEIGHTED_ROUND_ROBIN,new(O.bind(this))(e,s)],[N.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(C.bind(this))(e,s)]])}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 TypeError("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 M 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,...s){let r;return arguments.length>=3&&void 0!==t?(r=super.splice(e,t),this.push(...s)):r=2===arguments.length?super.splice(e,t):super.splice(e),r}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 q{items;offset;size;maxSize;constructor(){this.clear()}enqueue(e){return this.items.push(e),++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.offset];return 2*++this.offset>=this.items.length&&(this.items=this.items.slice(this.offset),this.offset=0),--this.size,e}peek(){if(!(this.size<=0))return this.items[this.offset]}clear(){this.items=[],this.offset=0,this.size=0,this.maxSize=0}[Symbol.iterator](){const e=this.items;let t=this.offset;return{next:()=>{if(t>=e.length)return{value:void 0,done:!0};const s=e[t];return++t,{value:s,done:!1}}}}}const K=Object.freeze({cluster:"cluster",thread:"thread"});class Q{worker;info;usage;tasksUsage;tasksQueue;constructor(e,t){this.worker=e,this.info=this.initWorkerInfo(e,t),this.usage=this.initWorkerUsage(),this.tasksUsage=new Map,this.tasksQueue=new q}tasksQueueSize(){return this.tasksQueue.size}tasksQueueMaxSize(){return this.tasksQueue.maxSize}enqueueTask(e){return this.tasksQueue.enqueue(e)}dequeueTask(){return this.tasksQueue.dequeue()}clearTasksQueue(){this.tasksQueue.clear()}resetUsage(){this.usage=this.initWorkerUsage(),this.tasksUsage.clear()}closeChannel(){null!=this.info.messageChannel&&(this.info.messageChannel?.port1.unref(),this.info.messageChannel?.port2.unref(),this.info.messageChannel?.port1.close(),this.info.messageChannel?.port2.close(),delete this.info.messageChannel)}getTaskWorkerUsage(e){return this.tasksUsage.has(e)||this.tasksUsage.set(e,this.initTaskWorkerUsage(e)),this.tasksUsage.get(e)}initWorkerInfo(e,t){return{id:this.getWorkerId(e,t),type:t,dynamic:!1,ready:!1,...t===K.thread&&{messageChannel:new n.MessageChannel}}}initWorkerUsage(){const e=()=>this.tasksQueueSize(),t=()=>this.tasksQueueMaxSize();return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}initTaskWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)s.name===e&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class A{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;starting;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!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.dequeueTask=this.dequeueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new z(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.startTimestamp=r.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!i.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}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===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new Error("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!f(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??N.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??g,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(N).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!f(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!f(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e.concurrency))throw new TypeError("Invalid worker tasks concurrency: must be an integer");if(null!=e?.concurrency&&e.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.20",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:y(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0),maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0),failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.runTime?.median??0))))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.waitTime?.median??0))))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(r.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}checkMessageWorkerId(e){if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===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,t]of this.workerNodes.entries())t.resetUsage(),this.sendWorkerStatisticsMessageToWorker(e)}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=>e.info.ready&&0===e.usage.tasks.executing))}async execute(e,t){return await new Promise(((i,o)=>{const n=r.performance.now(),a=this.chooseWorkerNode(),h={name:t??l,data:e??{},timestamp:n,workerId:this.getWorkerInfo(a).id,id:s.randomUUID()};this.promiseResponseMap.set(h.id,{resolve:i,reject:o,workerNodeKey:a}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.workerNodes[a].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency?this.executeTask(a,h):this.enqueueTask(a,h),this.checkAndEmitEvents()}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)})))}setupHook(){}beforeTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.name);++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.taskPerformance?.name??l);this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){T(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0,e.tasks.executed)}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);T(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,i,e.tasks.executed)}updateEluWorkerUsage(e,t){const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;T(e.elu.active,s,t.taskPerformance?.elu?.active??0,e.tasks.executed),T(e.elu.idle,s,t.taskPerformance?.elu?.idle??0,e.tasks.executed),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??m),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;var r;r=W.HARD,(e.kill===r||null!=e.kill&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch(m)}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendWorkerStatisticsMessageToWorker(e)}sendWorkerStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0,r=!1;for(const[i,o]of this.workerNodes.entries()){const n=this.getWorkerInfo(i);if(i!==e&&n.ready&&0===o.usage.tasks.queued){this.workerNodes[i].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&(r=!0),t=i;break}i!==e&&n.ready&&o.usage.tasks.queued<s&&(s=o.usage.tasks.queued,t=i)}r?this.executeTask(t,this.dequeueTask(e)):this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.id&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data);const s=t.workerNodeKey;this.afterTaskExecutionHook(s,e),this.promiseResponseMap.delete(e.id),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&this.workerNodes[s].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(s,this.dequeueTask(s)),this.workerChoiceStrategyContext.update(s)}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter.emit(d.busy,this.info),this.type===k.dynamic&&this.full&&this.emitter.emit(d.full,this.info))}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new Q(e,this.worker);this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker node not found");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t)}enqueueTask(e,t){return this.workerNodes[e].enqueueTask(t)}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class P extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e].worker,s=new Promise((e=>{t.on("exit",(()=>{e()}))}));t.on("disconnect",(()=>{t.kill()})),this.sendToWorker(e,{kill:!0,workerId:t.id}),t.disconnect(),await s}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].worker.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return t.fork(this.opts.env)}get type(){return k.fixed}get worker(){return K.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class U extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return n.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));this.sendToWorker(e,{kill:!0,workerId:s.threadId}),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t){this.getWorkerInfo(e).messageChannel.port1.postMessage(t)}sendStartupMessageToWorker(e){const t=this.workerNodes[e].worker,s=this.getWorkerInfo(e).messageChannel.port2;t.postMessage({ready:!1,workerId:t.threadId,port:s},[s])}registerWorkerMessageListener(e,t){this.getWorkerInfo(e).messageChannel.port1.on("message",t)}createWorker(){return new n.Worker(this.filePath,{env:n.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return K.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const D=6e4,F=W.SOFT;class _ extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:F,maxInactiveTime:D}){super(e),this.isMain=t,this.mainWorker=s,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||this.getMainWorker()?.on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??F,this.opts.maxInactiveTime=e.maxInactiveTime??D,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(l,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!f(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){if("string"!=typeof s)throw new TypeError("A taskFunctions parameter object key is not a string");if("function"!=typeof r)throw new TypeError("A taskFunctions parameter object value is not a function");const e=r.bind(this);t&&(this.taskFunctions.set(l,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");return this.taskFunctions.has(e)}addTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(l)&&this.taskFunctions.set(l,s),this.taskFunctions.set(e,s),!0}catch{return!1}}removeTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(l))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return Array.from(this.taskFunctions.keys())}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(l,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){e.workerId===this.id&&(null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?!this.isMain&&e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.id&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e))}handleKillMessage(e){!this.isMain&&this.stopCheckActive(),this.emitDestroy()}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??D)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??D)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}handleError(e){return e instanceof Error?e.message:e}run(e){if(this.isMain)throw new Error("Cannot run a task in the main worker");const t=this.getTaskFunction(e.name);(e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name)(t)?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}runSync(e,t){try{let s=this.beginTaskPerformance(t.name);const r=e(t.data);s=this.endTaskPerformance(s),this.sendToMainWorker({data:r,taskPerformance:s,workerId:this.id,id:t.id})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,id:t.id})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){let s=this.beginTaskPerformance(t.name);e(t.data).then((e=>(s=this.endTaskPerformance(s),this.sendToMainWorker({data:e,taskPerformance:s,workerId:this.id,id:t.id}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,id:t.id})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}getTaskFunction(e){e=e??l;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(e){return this.checkStatistics(),{name:e??l,timestamp:r.performance.now(),...this.statistics.elu&&{elu:r.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:r.performance.now()-e.timestamp},...this.statistics.elu&&{elu:r.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}exports.ClusterWorker=class extends _{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,t.worker,e,s)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||(this.getMainWorker()?.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends P{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends U{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=P,exports.FixedThreadPool=U,exports.KillBehaviors=W,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends _{port;constructor(e,t={}){super("worker-thread-pool:poolifier",n.isMainThread,n.parentPort,e,t)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||null==e.port||(this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return n.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=N,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=u.availableParallelism()}catch{const t=u.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};

lib/index.js

@@ -1,1 +0,1 @@
-"use strict";var e=require("node:events"),t=require("node:cluster"),s=require("node:crypto"),r=require("node:perf_hooks"),i=require("node:fs"),o=require("node:os"),n=require("node:worker_threads"),a=require("node:async_hooks");function h(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var u=h(o);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class c extends e.EventEmitter{}const d=Object.freeze({full:"full",ready:"ready",busy:"busy",error:"error",taskError:"taskError"}),l="default",m=Object.freeze((()=>{})),g={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},p={aggregate:!1,average:!1,median:!1},w=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},y=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},f=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),T=(e,t,s,r)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=Math.min(s,e.minimum??1/0),e.maximum=Math.max(s,e.maximum??-1/0),t.average&&0!==r&&(e.average=e.aggregate/r),t.median&&null!=s&&(e.history.push(s),e.median=w(e.history)))},W=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),x=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"}),N=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class S{pool;opts;nextWorkerNodeKey=0;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:p,waitTime:p,elu:p};constructor(e,t=g){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}setOptions(e){this.opts=e??g,this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime?.median??0:this.pool.workerNodes[e].usage.runTime?.average??0}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime?.median??0:this.pool.workerNodes[e].usage.waitTime?.average??0}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active?.median??0:this.pool.workerNodes[e].usage.elu.active?.average??0}computeDefaultWorkerWeight(){let e=0;for(const t of o.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/o.cpus().length)}}class E extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){return this.fairShareNextWorkerNodeKey()}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}fairShareNextWorkerNodeKey(){let e=1/0;for(const[t]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[t]&&this.computeWorkerVirtualTaskEndTimestamp(t);const s=this.workersVirtualTaskEndTimestamp[t];this.isWorkerNodeReady(t)&&s<e&&(e=s,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===N.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class v extends S{strategyPolicy={useDynamicWorker:!0};roundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.nextWorkerNodeKey=0,this.roundId=0,!0}update(){return!0}choose(){let e,t;for(let s=this.roundId;s<this.roundWeights.length;s++)for(let r=this.nextWorkerNodeKey;r<this.pool.workerNodes.length;r++){const i=this.opts.weights?.[r]??this.defaultWorkerWeight;if(this.isWorkerNodeReady(r)&&i>=this.roundWeights[s]){e=s,t=r;break}}this.roundId=e??0,this.nextWorkerNodeKey=t??0;const s=this.nextWorkerNodeKey;return this.nextWorkerNodeKey===this.pool.workerNodes.length-1?(this.nextWorkerNodeKey=0,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1):this.nextWorkerNodeKey=this.nextWorkerNodeKey+1,s}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+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 R extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:p};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastBusyNextWorkerNodeKey()}remove(){return!0}leastBusyNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=(s.usage.runTime?.aggregate??0)+(s.usage.waitTime?.aggregate??0);if(this.isWorkerNodeReady(t)&&0===r){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&r<e&&(e=r,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class C extends S{constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastUsedNextWorkerNodeKey()}remove(){return!0}leastUsedNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage.tasks,i=r.executed+r.executing+r.queued;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class b extends S{taskStatisticsRequirements={runTime:p,waitTime:p,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastEluNextWorkerNodeKey()}remove(){return!0}leastEluNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage,i=r.elu?.active?.aggregate??0;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class I extends S{strategyPolicy={useDynamicWorker:!0};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeKey=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.roundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.nextWorkerNodeKey}}class O extends S{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:p};defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.nextWorkerNodeKey=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.weightedRoundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.workerVirtualTaskRunTime;return e<(this.opts.weights?.[this.nextWorkerNodeKey]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=e+this.getWorkerTaskRunTime(this.nextWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.workerVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class z{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=x.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[x.ROUND_ROBIN,new(I.bind(this))(e,s)],[x.LEAST_USED,new(C.bind(this))(e,s)],[x.LEAST_BUSY,new(R.bind(this))(e,s)],[x.LEAST_ELU,new(b.bind(this))(e,s)],[x.FAIR_SHARE,new(E.bind(this))(e,s)],[x.WEIGHTED_ROUND_ROBIN,new(O.bind(this))(e,s)],[x.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(v.bind(this))(e,s)]])}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 M 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,...s){let r;return arguments.length>=3&&void 0!==t?(r=super.splice(e,t),this.push(...s)):r=2===arguments.length?super.splice(e,t):super.splice(e),r}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 q{items;offset;size;maxSize;constructor(){this.clear()}enqueue(e){return this.items.push(e),++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.offset];return 2*++this.offset>=this.items.length&&(this.items=this.items.slice(this.offset),this.offset=0),--this.size,e}peek(){if(!(this.size<=0))return this.items[this.offset]}clear(){this.items=[],this.offset=0,this.size=0,this.maxSize=0}[Symbol.iterator](){const e=this.items;let t=this.offset;return{next:()=>{if(t>=e.length)return{value:void 0,done:!0};const s=e[t];return++t,{value:s,done:!1}}}}}const K=Object.freeze({cluster:"cluster",thread:"thread"});class A{worker;info;usage;tasksUsage;tasksQueue;constructor(e,t){this.worker=e,this.info=this.initWorkerInfo(e,t),this.usage=this.initWorkerUsage(),this.tasksUsage=new Map,this.tasksQueue=new q}tasksQueueSize(){return this.tasksQueue.size}tasksQueueMaxSize(){return this.tasksQueue.maxSize}enqueueTask(e){return this.tasksQueue.enqueue(e)}dequeueTask(){return this.tasksQueue.dequeue()}clearTasksQueue(){this.tasksQueue.clear()}resetUsage(){this.usage=this.initWorkerUsage(),this.tasksUsage.clear()}closeChannel(){null!=this.info.messageChannel&&(this.info.messageChannel?.port1.unref(),this.info.messageChannel?.port2.unref(),this.info.messageChannel?.port1.close(),this.info.messageChannel?.port2.close(),delete this.info.messageChannel)}getTaskWorkerUsage(e){return this.tasksUsage.has(e)||this.tasksUsage.set(e,this.initTaskWorkerUsage(e)),this.tasksUsage.get(e)}initWorkerInfo(e,t){return{id:this.getWorkerId(e,t),type:t,dynamic:!1,ready:!1,...t===K.thread&&{messageChannel:new n.MessageChannel}}}initWorkerUsage(){const e=()=>this.tasksQueueSize(),t=()=>this.tasksQueueMaxSize();return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}initTaskWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)s.name===e&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class P{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;starting;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!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 c),this.workerChoiceStrategyContext=new z(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.startTimestamp=r.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!i.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}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===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!f(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??x.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??g,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(x).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!f(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(N).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!f(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e.concurrency))throw new TypeError("Invalid worker tasks concurrency: must be an integer");if(null!=e?.concurrency&&e.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorker()}get info(){return{version:"2.6.19",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:y(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0),maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0),failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.runTime?.median??0))))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.waitTime?.median??0))))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(r.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}getWorkerById(e){return this.workerNodes.find((t=>t.info.id===e))?.worker}checkMessageWorkerId(e){if(null!=e.workerId&&null==this.getWorkerById(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}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)e.resetUsage(),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.usage.tasks.executing))}async execute(e,t){const i=r.performance.now(),o=this.chooseWorkerNode(),n={name:t??l,data:e??{},timestamp:i,workerId:this.getWorkerInfo(o).id,id:s.randomUUID()},a=new Promise(((e,t)=>{this.promiseResponseMap.set(n.id,{resolve:e,reject:t,worker:this.workerNodes[o].worker})}));return!0===this.opts.enableTasksQueue&&(this.busy||this.workerNodes[o].usage.tasks.executing>=this.opts.tasksQueueOptions.concurrency)?this.enqueueTask(o,n):this.executeTask(o,n),this.checkAndEmitEvents(),a}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{this.flushTasksQueue(t);const s=new Promise((t=>{e.worker.on("exit",(()=>{t()}))}));await this.destroyWorker(e.worker),await s})))}setupHook(){}beforeTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.name);++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const s=this.getWorkerNodeKey(e),r=this.workerNodes[s].usage;this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t);const i=this.workerNodes[s].getTaskWorkerUsage(t.taskPerformance?.name??l);this.updateTaskStatisticsWorkerUsage(i,t),this.updateRunTimeWorkerUsage(i,t),this.updateEluWorkerUsage(i,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){T(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0,e.tasks.executed)}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);T(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,i,e.tasks.executed)}updateEluWorkerUsage(e,t){const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;T(e.elu.active,s,t.taskPerformance?.elu?.active??0,e.tasks.executed),T(e.elu.idle,s,t.taskPerformance?.elu?.idle??0,e.tasks.executed),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}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===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKey(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorker():this.createAndSetupWorker()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??m),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)})),this.addWorkerNode(e),this.afterWorkerSetup(e),e}createAndSetupDynamicWorker(){const e=this.createAndSetupWorker();this.registerWorkerMessageListener(e,(t=>{const s=this.getWorkerNodeKey(e);var r;r=W.HARD,(t.kill===r||null!=t.kill&&(!1===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing||!0===this.opts.enableTasksQueue&&0===this.workerNodes[s].usage.tasks.executing&&0===this.tasksQueueSize(s)))&&this.destroyWorker(e)}));const t=this.getWorkerInfoByWorker(e);return t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),this.sendToWorker(e,{checkActive:!0,workerId:t.id}),e}afterWorkerSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.setWorkerStatistics(e)}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0;for(const[r,i]of this.workerNodes.entries()){const o=this.getWorkerInfo(r);if(r!==e&&o.ready&&0===i.usage.tasks.queued){t=r;break}r!==e&&o.ready&&i.usage.tasks.queued<s&&(s=i.usage.tasks.queued,t=r)}this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.id&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){this.getWorkerInfoByWorker(this.getWorkerById(e.workerId)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data),this.afterTaskExecutionHook(t.worker,e),this.promiseResponseMap.delete(e.id);const s=this.getWorkerNodeKey(t.worker);!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&this.executeTask(s,this.dequeueTask(s)),this.workerChoiceStrategyContext.update(s)}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter.emit(d.busy,this.info),this.type===k.dynamic&&this.full&&this.emitter.emit(d.full,this.info))}getWorkerInfo(e){return this.workerNodes[e].info}getWorkerInfoByWorker(e){const t=this.getWorkerNodeKey(e);if(-1===t)throw new Error("Worker not found");return this.workerNodes[t].info}addWorkerNode(e){const t=new A(e,this.worker);return this.starting&&(t.info.ready=!0),this.workerNodes.push(t)}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].enqueueTask(t)}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}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},workerId:this.getWorkerInfoByWorker(e).id})}}class Q extends P{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.id}),e.on("disconnect",(()=>{e.kill()})),e.disconnect()}sendToWorker(e,t){e.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:e.id})}registerWorkerMessageListener(e,t){e.on("message",t)}createWorker(){return t.fork(this.opts.env)}get type(){return k.fixed}get worker(){return K.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class U extends P{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return n.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:!0,workerId:e.threadId}),this.workerNodes[this.getWorkerNodeKey(e)].closeChannel(),await e.terminate()}sendToWorker(e,t){this.getWorkerInfoByWorker(e).messageChannel.port1.postMessage(t)}sendStartupMessageToWorker(e){const t=this.getWorkerInfoByWorker(e).messageChannel.port2;e.postMessage({ready:!1,workerId:e.threadId,port:t},[t])}registerWorkerMessageListener(e,t){this.getWorkerInfoByWorker(e).messageChannel.port1.on("message",t)}createWorker(){return new n.Worker(this.filePath,{env:n.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return K.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const D=6e4,F=W.SOFT;class B extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:F,maxInactiveTime:D}){super(e),this.isMain=t,this.mainWorker=s,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||this.getMainWorker()?.on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??F,this.opts.maxInactiveTime=e.maxInactiveTime??D,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(l,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!f(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){if("string"!=typeof s)throw new TypeError("A taskFunctions parameter object key is not a string");if("function"!=typeof r)throw new TypeError("A taskFunctions parameter object value is not a function");const e=r.bind(this);t&&(this.taskFunctions.set(l,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");return this.taskFunctions.has(e)}addTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(l)&&this.taskFunctions.set(l,s),this.taskFunctions.set(e,s),!0}catch{return!1}}removeTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(l))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return Array.from(this.taskFunctions.keys())}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(l,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){e.workerId===this.id&&(null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?!this.isMain&&e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.id&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e))}handleKillMessage(e){!this.isMain&&this.stopCheckActive(),this.emitDestroy()}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??D)/2),this.activeInterval.unref()}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??D)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}handleError(e){return e instanceof Error?e.message:e}run(e){if(this.isMain)throw new Error("Cannot run a task in the main worker");const t=this.getTaskFunction(e.name);(e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name)(t)?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}runSync(e,t){try{let s=this.beginTaskPerformance(t.name);const r=e(t.data);s=this.endTaskPerformance(s),this.sendToMainWorker({data:r,taskPerformance:s,workerId:this.id,id:t.id})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,id:t.id})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){let s=this.beginTaskPerformance(t.name);e(t.data).then((e=>(s=this.endTaskPerformance(s),this.sendToMainWorker({data:e,taskPerformance:s,workerId:this.id,id:t.id}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,id:t.id})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}getTaskFunction(e){e=e??l;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(e){return this.checkStatistics(),{name:e??l,timestamp:r.performance.now(),...this.statistics.elu&&{elu:r.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:r.performance.now()-e.timestamp},...this.statistics.elu&&{elu:r.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}exports.ClusterWorker=class extends B{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,t.worker,e,s)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||(this.getMainWorker()?.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends Q{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends U{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=Q,exports.FixedThreadPool=U,exports.KillBehaviors=W,exports.Measurements=N,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends B{port;constructor(e,t={}){super("worker-thread-pool:poolifier",n.isMainThread,n.parentPort,e,t)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||null==e.port||(this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return n.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=x,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=u.availableParallelism()}catch{const t=u.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};
+"use strict";var e=require("node:events"),t=require("node:cluster"),s=require("node:crypto"),r=require("node:perf_hooks"),i=require("node:fs"),o=require("node:os"),n=require("node:worker_threads"),a=require("node:async_hooks");function h(e){var t=Object.create(null);return e&&Object.keys(e).forEach((function(s){if("default"!==s){var r=Object.getOwnPropertyDescriptor(e,s);Object.defineProperty(t,s,r.get?r:{enumerable:!0,get:function(){return e[s]}})}})),t.default=e,Object.freeze(t)}var u=h(o);const k=Object.freeze({fixed:"fixed",dynamic:"dynamic"});class c extends e.EventEmitter{}const d=Object.freeze({full:"full",ready:"ready",busy:"busy",error:"error",taskError:"taskError"}),l="default",m=Object.freeze((()=>{})),g={runTime:{median:!1},waitTime:{median:!1},elu:{median:!1}},p={aggregate:!1,average:!1,median:!1},w=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},y=(e,t=2)=>{const s=Math.pow(10,t);return Math.round(e*s*(1+Number.EPSILON))/s},f=e=>"object"==typeof e&&null!==e&&e?.constructor===Object&&"[object Object]"===Object.prototype.toString.call(e),T=(e,t,s,r)=>{t.aggregate&&(e.aggregate=(e.aggregate??0)+s,e.minimum=Math.min(s,e.minimum??1/0),e.maximum=Math.max(s,e.maximum??-1/0),t.average&&0!==r&&(e.average=e.aggregate/r),t.median&&null!=s&&(e.history.push(s),e.median=w(e.history)))},W=Object.freeze({SOFT:"SOFT",HARD:"HARD"}),N=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"}),x=Object.freeze({runTime:"runTime",waitTime:"waitTime",elu:"elu"});class S{pool;opts;nextWorkerNodeKey=0;strategyPolicy={useDynamicWorker:!1};taskStatisticsRequirements={runTime:p,waitTime:p,elu:p};constructor(e,t=g){this.pool=e,this.opts=t,this.choose=this.choose.bind(this)}setTaskStatisticsRequirements(e){this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.runTime,e.runTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.waitTime,e.waitTime?.median),this.toggleMedianMeasurementStatisticsRequirements(this.taskStatisticsRequirements.elu,e.elu?.median)}toggleMedianMeasurementStatisticsRequirements(e,t){e.average&&t&&(e.average=!1,e.median=t),e.median&&!t&&(e.average=!0,e.median=t)}setOptions(e){this.opts=e??g,this.setTaskStatisticsRequirements(this.opts)}isWorkerNodeReady(e){return this.pool.workerNodes[e].info.ready}getWorkerTaskRunTime(e){return this.taskStatisticsRequirements.runTime.median?this.pool.workerNodes[e].usage.runTime?.median??0:this.pool.workerNodes[e].usage.runTime?.average??0}getWorkerTaskWaitTime(e){return this.taskStatisticsRequirements.waitTime.median?this.pool.workerNodes[e].usage.waitTime?.median??0:this.pool.workerNodes[e].usage.waitTime?.average??0}getWorkerTaskElu(e){return this.taskStatisticsRequirements.elu.median?this.pool.workerNodes[e].usage.elu.active?.median??0:this.pool.workerNodes[e].usage.elu.active?.average??0}computeDefaultWorkerWeight(){let e=0;for(const t of o.cpus()){const s=t.speed.toString().length-1;e+=1/(t.speed/Math.pow(10,s))*Math.pow(10,s)}return Math.round(e/o.cpus().length)}}class E extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:{aggregate:!0,average:!0,median:!1}};workersVirtualTaskEndTimestamp=[];constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.workersVirtualTaskEndTimestamp=[],!0}update(e){return this.computeWorkerVirtualTaskEndTimestamp(e),!0}choose(){return this.fairShareNextWorkerNodeKey()}remove(e){return this.workersVirtualTaskEndTimestamp.splice(e,1),!0}fairShareNextWorkerNodeKey(){let e=1/0;for(const[t]of this.pool.workerNodes.entries()){null==this.workersVirtualTaskEndTimestamp[t]&&this.computeWorkerVirtualTaskEndTimestamp(t);const s=this.workersVirtualTaskEndTimestamp[t];this.isWorkerNodeReady(t)&&s<e&&(e=s,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}computeWorkerVirtualTaskEndTimestamp(e){this.workersVirtualTaskEndTimestamp[e]=this.getWorkerVirtualTaskEndTimestamp(e,this.getWorkerVirtualTaskStartTimestamp(e))}getWorkerVirtualTaskEndTimestamp(e,t){return t+(this.opts.measurement===x.elu?this.getWorkerTaskElu(e):this.getWorkerTaskRunTime(e))}getWorkerVirtualTaskStartTimestamp(e){return Math.max(performance.now(),this.workersVirtualTaskEndTimestamp[e]??-1/0)}}class C extends S{strategyPolicy={useDynamicWorker:!0};roundId=0;roundWeights;defaultWorkerWeight;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight(),this.roundWeights=this.getRoundWeights()}reset(){return this.nextWorkerNodeKey=0,this.roundId=0,!0}update(){return!0}choose(){let e,t;for(let s=this.roundId;s<this.roundWeights.length;s++)for(let r=this.nextWorkerNodeKey;r<this.pool.workerNodes.length;r++){const i=this.opts.weights?.[r]??this.defaultWorkerWeight;if(this.isWorkerNodeReady(r)&&i>=this.roundWeights[s]){e=s,t=r;break}}this.roundId=e??0,this.nextWorkerNodeKey=t??0;const s=this.nextWorkerNodeKey;return this.nextWorkerNodeKey===this.pool.workerNodes.length-1?(this.nextWorkerNodeKey=0,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+1):this.nextWorkerNodeKey=this.nextWorkerNodeKey+1,s}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1,this.roundId=this.roundId===this.roundWeights.length-1?0:this.roundId+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 b extends S{taskStatisticsRequirements={runTime:{aggregate:!0,average:!1,median:!1},waitTime:{aggregate:!0,average:!1,median:!1},elu:p};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastBusyNextWorkerNodeKey()}remove(){return!0}leastBusyNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=(s.usage.runTime?.aggregate??0)+(s.usage.waitTime?.aggregate??0);if(this.isWorkerNodeReady(t)&&0===r){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&r<e&&(e=r,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class v extends S{constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastUsedNextWorkerNodeKey()}remove(){return!0}leastUsedNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage.tasks,i=r.executed+r.executing+r.queued;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class R extends S{taskStatisticsRequirements={runTime:p,waitTime:p,elu:{aggregate:!0,average:!1,median:!1}};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return!0}update(){return!0}choose(){return this.leastEluNextWorkerNodeKey()}remove(){return!0}leastEluNextWorkerNodeKey(){let e=1/0;for(const[t,s]of this.pool.workerNodes.entries()){const r=s.usage,i=r.elu?.active?.aggregate??0;if(this.isWorkerNodeReady(t)&&0===i){this.nextWorkerNodeKey=t;break}this.isWorkerNodeReady(t)&&i<e&&(e=i,this.nextWorkerNodeKey=t)}return this.nextWorkerNodeKey}}class I extends S{strategyPolicy={useDynamicWorker:!0};constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts)}reset(){return this.nextWorkerNodeKey=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.roundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1)),!0}roundRobinNextWorkerNodeKey(){return this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.nextWorkerNodeKey}}class O extends S{strategyPolicy={useDynamicWorker:!0};taskStatisticsRequirements={runTime:{aggregate:!0,average:!0,median:!1},waitTime:p,elu:p};defaultWorkerWeight;workerVirtualTaskRunTime=0;constructor(e,t=g){super(e,t),this.setTaskStatisticsRequirements(this.opts),this.defaultWorkerWeight=this.computeDefaultWorkerWeight()}reset(){return this.nextWorkerNodeKey=0,this.workerVirtualTaskRunTime=0,!0}update(){return!0}choose(){const e=this.nextWorkerNodeKey;do{this.weightedRoundRobinNextWorkerNodeKey()}while(!this.isWorkerNodeReady(this.nextWorkerNodeKey));return e}remove(e){return this.nextWorkerNodeKey===e&&(0===this.pool.workerNodes.length?this.nextWorkerNodeKey=0:this.nextWorkerNodeKey>this.pool.workerNodes.length-1&&(this.nextWorkerNodeKey=this.pool.workerNodes.length-1),this.workerVirtualTaskRunTime=0),!0}weightedRoundRobinNextWorkerNodeKey(){const e=this.workerVirtualTaskRunTime;return e<(this.opts.weights?.[this.nextWorkerNodeKey]??this.defaultWorkerWeight)?this.workerVirtualTaskRunTime=e+this.getWorkerTaskRunTime(this.nextWorkerNodeKey):(this.nextWorkerNodeKey=this.nextWorkerNodeKey===this.pool.workerNodes.length-1?0:this.nextWorkerNodeKey+1,this.workerVirtualTaskRunTime=0),this.nextWorkerNodeKey}}class z{workerChoiceStrategy;workerChoiceStrategies;constructor(e,t=N.ROUND_ROBIN,s=g){this.workerChoiceStrategy=t,this.execute=this.execute.bind(this),this.workerChoiceStrategies=new Map([[N.ROUND_ROBIN,new(I.bind(this))(e,s)],[N.LEAST_USED,new(v.bind(this))(e,s)],[N.LEAST_BUSY,new(b.bind(this))(e,s)],[N.LEAST_ELU,new(R.bind(this))(e,s)],[N.FAIR_SHARE,new(E.bind(this))(e,s)],[N.WEIGHTED_ROUND_ROBIN,new(O.bind(this))(e,s)],[N.INTERLEAVED_WEIGHTED_ROUND_ROBIN,new(C.bind(this))(e,s)]])}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 TypeError("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 M 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,...s){let r;return arguments.length>=3&&void 0!==t?(r=super.splice(e,t),this.push(...s)):r=2===arguments.length?super.splice(e,t):super.splice(e),r}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 q{items;offset;size;maxSize;constructor(){this.clear()}enqueue(e){return this.items.push(e),++this.size,this.size>this.maxSize&&(this.maxSize=this.size),this.size}dequeue(){if(this.size<=0)return;const e=this.items[this.offset];return 2*++this.offset>=this.items.length&&(this.items=this.items.slice(this.offset),this.offset=0),--this.size,e}peek(){if(!(this.size<=0))return this.items[this.offset]}clear(){this.items=[],this.offset=0,this.size=0,this.maxSize=0}[Symbol.iterator](){const e=this.items;let t=this.offset;return{next:()=>{if(t>=e.length)return{value:void 0,done:!0};const s=e[t];return++t,{value:s,done:!1}}}}}const K=Object.freeze({cluster:"cluster",thread:"thread"});class Q{worker;info;usage;tasksUsage;tasksQueue;constructor(e,t){this.worker=e,this.info=this.initWorkerInfo(e,t),this.usage=this.initWorkerUsage(),this.tasksUsage=new Map,this.tasksQueue=new q}tasksQueueSize(){return this.tasksQueue.size}tasksQueueMaxSize(){return this.tasksQueue.maxSize}enqueueTask(e){return this.tasksQueue.enqueue(e)}dequeueTask(){return this.tasksQueue.dequeue()}clearTasksQueue(){this.tasksQueue.clear()}resetUsage(){this.usage=this.initWorkerUsage(),this.tasksUsage.clear()}closeChannel(){null!=this.info.messageChannel&&(this.info.messageChannel?.port1.unref(),this.info.messageChannel?.port2.unref(),this.info.messageChannel?.port1.close(),this.info.messageChannel?.port2.close(),delete this.info.messageChannel)}getTaskWorkerUsage(e){return this.tasksUsage.has(e)||this.tasksUsage.set(e,this.initTaskWorkerUsage(e)),this.tasksUsage.get(e)}initWorkerInfo(e,t){return{id:this.getWorkerId(e,t),type:t,dynamic:!1,ready:!1,...t===K.thread&&{messageChannel:new n.MessageChannel}}}initWorkerUsage(){const e=()=>this.tasksQueueSize(),t=()=>this.tasksQueueMaxSize();return{tasks:{executed:0,executing:0,get queued(){return e()},get maxQueued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}initTaskWorkerUsage(e){const t=()=>{let t=0;for(const s of this.tasksQueue)s.name===e&&++t;return t};return{tasks:{executed:0,executing:0,get queued(){return t()},failed:0},runTime:{history:new M},waitTime:{history:new M},elu:{idle:{history:new M},active:{history:new M}}}}getWorkerId(e,t){return t===K.thread?e.threadId:t===K.cluster?e.id:void 0}}class A{numberOfWorkers;filePath;opts;workerNodes=[];emitter;promiseResponseMap=new Map;workerChoiceStrategyContext;starting;startTimestamp;constructor(e,t,s){if(this.numberOfWorkers=e,this.filePath=t,this.opts=s,!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.dequeueTask=this.dequeueTask.bind(this),this.checkAndEmitEvents=this.checkAndEmitEvents.bind(this),!0===this.opts.enableEvents&&(this.emitter=new c),this.workerChoiceStrategyContext=new z(this,this.opts.workerChoiceStrategy,this.opts.workerChoiceStrategyOptions),this.setupHook(),this.starting=!0,this.startPool(),this.starting=!1,this.startTimestamp=r.performance.now()}checkFilePath(e){if(null==e||"string"!=typeof e||"string"==typeof e&&0===e.trim().length)throw new Error("Please specify a file with a worker implementation");if(!i.existsSync(e))throw new Error(`Cannot find the worker file '${e}'`)}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===k.fixed&&0===e)throw new RangeError("Cannot instantiate a fixed pool with zero worker")}checkDynamicPoolSize(e,t){if(this.type===k.dynamic){if(null==t)throw new Error("Cannot instantiate a dynamic pool without specifying the maximum pool size");if(!Number.isSafeInteger(t))throw new TypeError("Cannot instantiate a dynamic pool with a non safe integer maximum pool size");if(e>t)throw new RangeError("Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size");if(0===t)throw new RangeError("Cannot instantiate a dynamic pool with a pool size equal to zero");if(e===t)throw new RangeError("Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead")}}checkPoolOptions(e){if(!f(e))throw new TypeError("Invalid pool options: must be a plain object");this.opts.workerChoiceStrategy=e.workerChoiceStrategy??N.ROUND_ROBIN,this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy),this.opts.workerChoiceStrategyOptions=e.workerChoiceStrategyOptions??g,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(N).includes(e))throw new Error(`Invalid worker choice strategy '${e}'`)}checkValidWorkerChoiceStrategyOptions(e){if(!f(e))throw new TypeError("Invalid worker choice strategy options: must be a plain object");if(null!=e.weights&&Object.keys(e.weights).length!==this.maxSize)throw new Error("Invalid worker choice strategy options: must have a weight for each worker node");if(null!=e.measurement&&!Object.values(x).includes(e.measurement))throw new Error(`Invalid worker choice strategy options: invalid measurement '${e.measurement}'`)}checkValidTasksQueueOptions(e){if(null!=e&&!f(e))throw new TypeError("Invalid tasks queue options: must be a plain object");if(null!=e?.concurrency&&!Number.isSafeInteger(e.concurrency))throw new TypeError("Invalid worker tasks concurrency: must be an integer");if(null!=e?.concurrency&&e.concurrency<=0)throw new Error(`Invalid worker tasks concurrency '${e.concurrency}'`)}startPool(){for(;this.workerNodes.reduce(((e,t)=>t.info.dynamic?e:e+1),0)<this.numberOfWorkers;)this.createAndSetupWorkerNode()}get info(){return{version:"2.6.20",type:this.type,worker:this.worker,ready:this.ready,strategy:this.opts.workerChoiceStrategy,minSize:this.minSize,maxSize:this.maxSize,...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{utilization:y(this.utilization)},workerNodes:this.workerNodes.length,idleWorkerNodes:this.workerNodes.reduce(((e,t)=>0===t.usage.tasks.executing?e+1:e),0),busyWorkerNodes:this.workerNodes.reduce(((e,t)=>t.usage.tasks.executing>0?e+1:e),0),executedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executed),0),executingTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.executing),0),queuedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.queued),0),maxQueuedTasks:this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.maxQueued??0)),0),failedTasks:this.workerNodes.reduce(((e,t)=>e+t.usage.tasks.failed),0),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate&&{runTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.runTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.runTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.runTime?.median??0))))}}},...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.aggregate&&{waitTime:{minimum:y(Math.min(...this.workerNodes.map((e=>e.usage.waitTime?.minimum??1/0)))),maximum:y(Math.max(...this.workerNodes.map((e=>e.usage.waitTime?.maximum??-1/0)))),average:y(this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0)/this.workerNodes.reduce(((e,t)=>e+(t.usage.tasks?.executed??0)),0)),...this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime.median&&{median:y(w(this.workerNodes.map((e=>e.usage.waitTime?.median??0))))}}}}}get ready(){return this.workerNodes.reduce(((e,t)=>!t.info.dynamic&&t.info.ready?e+1:e),0)>=this.minSize}get utilization(){const e=(r.performance.now()-this.startTimestamp)*this.maxSize;return(this.workerNodes.reduce(((e,t)=>e+(t.usage.runTime?.aggregate??0)),0)+this.workerNodes.reduce(((e,t)=>e+(t.usage.waitTime?.aggregate??0)),0))/e}checkMessageWorkerId(e){if(null!=e.workerId&&-1===this.getWorkerNodeKeyByWorkerId(e.workerId))throw new Error(`Worker message received from unknown worker '${e.workerId}'`)}getWorkerNodeKeyByWorker(e){return this.workerNodes.findIndex((t=>t.worker===e))}getWorkerNodeKeyByWorkerId(e){return this.workerNodes.findIndex((t=>t.info.id===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,t]of this.workerNodes.entries())t.resetUsage(),this.sendWorkerStatisticsMessageToWorker(e)}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=>e.info.ready&&0===e.usage.tasks.executing))}async execute(e,t){return await new Promise(((i,o)=>{const n=r.performance.now(),a=this.chooseWorkerNode(),h={name:t??l,data:e??{},timestamp:n,workerId:this.getWorkerInfo(a).id,id:s.randomUUID()};this.promiseResponseMap.set(h.id,{resolve:i,reject:o,workerNodeKey:a}),!1===this.opts.enableTasksQueue||!0===this.opts.enableTasksQueue&&this.workerNodes[a].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency?this.executeTask(a,h):this.enqueueTask(a,h),this.checkAndEmitEvents()}))}async destroy(){await Promise.all(this.workerNodes.map((async(e,t)=>{await this.destroyWorkerNode(t)})))}setupHook(){}beforeTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;++s.tasks.executing,this.updateWaitTimeWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.name);++r.tasks.executing,this.updateWaitTimeWorkerUsage(r,t)}afterTaskExecutionHook(e,t){const s=this.workerNodes[e].usage;this.updateTaskStatisticsWorkerUsage(s,t),this.updateRunTimeWorkerUsage(s,t),this.updateEluWorkerUsage(s,t);const r=this.workerNodes[e].getTaskWorkerUsage(t.taskPerformance?.name??l);this.updateTaskStatisticsWorkerUsage(r,t),this.updateRunTimeWorkerUsage(r,t),this.updateEluWorkerUsage(r,t)}updateTaskStatisticsWorkerUsage(e,t){const s=e.tasks;--s.executing,null==t.taskError?++s.executed:++s.failed}updateRunTimeWorkerUsage(e,t){T(e.runTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,t.taskPerformance?.runTime??0,e.tasks.executed)}updateWaitTimeWorkerUsage(e,t){const s=r.performance.now(),i=s-(t.timestamp??s);T(e.waitTime,this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,i,e.tasks.executed)}updateEluWorkerUsage(e,t){const s=this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu;T(e.elu.active,s,t.taskPerformance?.elu?.active??0,e.tasks.executed),T(e.elu.idle,s,t.taskPerformance?.elu?.idle??0,e.tasks.executed),s.aggregate&&null!=t.taskPerformance?.elu&&(null!=e.elu.utilization?e.elu.utilization=(e.elu.utilization+t.taskPerformance.elu.utilization)/2:e.elu.utilization=t.taskPerformance.elu.utilization)}chooseWorkerNode(){if(this.shallCreateDynamicWorker()){const e=this.createAndSetupDynamicWorkerNode();if(this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker)return e}return this.workerChoiceStrategyContext.execute()}shallCreateDynamicWorker(){return this.type===k.dynamic&&!this.full&&this.internalBusy()}createAndSetupWorkerNode(){const e=this.createWorker();e.on("message",this.opts.messageHandler??m),e.on("error",this.opts.errorHandler??m),e.on("error",(t=>{const s=this.getWorkerNodeKeyByWorker(e),r=this.getWorkerInfo(s);r.ready=!1,this.workerNodes[s].closeChannel(),this.emitter?.emit(d.error,t),!0!==this.opts.restartWorkerOnError||this.starting||(r.dynamic?this.createAndSetupDynamicWorkerNode():this.createAndSetupWorkerNode()),!0===this.opts.enableTasksQueue&&this.redistributeQueuedTasks(s)})),e.on("online",this.opts.onlineHandler??m),e.on("exit",this.opts.exitHandler??m),e.once("exit",(()=>{this.removeWorkerNode(e)}));const t=this.addWorkerNode(e);return this.afterWorkerNodeSetup(t),t}createAndSetupDynamicWorkerNode(){const e=this.createAndSetupWorkerNode();this.registerWorkerMessageListener(e,(e=>{const t=this.getWorkerNodeKeyByWorkerId(e.workerId),s=this.workerNodes[t].usage;var r;r=W.HARD,(e.kill===r||null!=e.kill&&(!1===this.opts.enableTasksQueue&&0===s.tasks.executing||!0===this.opts.enableTasksQueue&&0===s.tasks.executing&&0===this.tasksQueueSize(t)))&&this.destroyWorkerNode(t).catch(m)}));const t=this.getWorkerInfo(e);return this.sendToWorker(e,{checkActive:!0,workerId:t.id}),t.dynamic=!0,this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker&&(t.ready=!0),e}afterWorkerNodeSetup(e){this.registerWorkerMessageListener(e,this.workerListener()),this.sendStartupMessageToWorker(e),this.sendWorkerStatisticsMessageToWorker(e)}sendWorkerStatisticsMessageToWorker(e){this.sendToWorker(e,{statistics:{runTime:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime.aggregate,elu:this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu.aggregate},workerId:this.getWorkerInfo(e).id})}redistributeQueuedTasks(e){for(;this.tasksQueueSize(e)>0;){let t=e,s=1/0,r=!1;for(const[i,o]of this.workerNodes.entries()){const n=this.getWorkerInfo(i);if(i!==e&&n.ready&&0===o.usage.tasks.queued){this.workerNodes[i].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&(r=!0),t=i;break}i!==e&&n.ready&&o.usage.tasks.queued<s&&(s=o.usage.tasks.queued,t=i)}r?this.executeTask(t,this.dequeueTask(e)):this.enqueueTask(t,this.dequeueTask(e))}}workerListener(){return e=>{this.checkMessageWorkerId(e),null!=e.ready?this.handleWorkerReadyResponse(e):null!=e.id&&this.handleTaskExecutionResponse(e)}}handleWorkerReadyResponse(e){this.getWorkerInfo(this.getWorkerNodeKeyByWorkerId(e.workerId)).ready=e.ready,null!=this.emitter&&this.ready&&this.emitter.emit(d.ready,this.info)}handleTaskExecutionResponse(e){const t=this.promiseResponseMap.get(e.id);if(null!=t){null!=e.taskError?(this.emitter?.emit(d.taskError,e.taskError),t.reject(e.taskError.message)):t.resolve(e.data);const s=t.workerNodeKey;this.afterTaskExecutionHook(s,e),this.promiseResponseMap.delete(e.id),!0===this.opts.enableTasksQueue&&this.tasksQueueSize(s)>0&&this.workerNodes[s].usage.tasks.executing<this.opts.tasksQueueOptions?.concurrency&&this.executeTask(s,this.dequeueTask(s)),this.workerChoiceStrategyContext.update(s)}}checkAndEmitEvents(){null!=this.emitter&&(this.busy&&this.emitter.emit(d.busy,this.info),this.type===k.dynamic&&this.full&&this.emitter.emit(d.full,this.info))}getWorkerInfo(e){return this.workerNodes[e].info}addWorkerNode(e){const t=new Q(e,this.worker);this.starting&&(t.info.ready=!0),this.workerNodes.push(t);const s=this.getWorkerNodeKeyByWorker(e);if(-1===s)throw new Error("Worker node not found");return s}removeWorkerNode(e){const t=this.getWorkerNodeKeyByWorker(e);-1!==t&&(this.workerNodes.splice(t,1),this.workerChoiceStrategyContext.remove(t))}executeTask(e,t){this.beforeTaskExecutionHook(e,t),this.sendToWorker(e,t)}enqueueTask(e,t){return this.workerNodes[e].enqueueTask(t)}dequeueTask(e){return this.workerNodes[e].dequeueTask()}tasksQueueSize(e){return this.workerNodes[e].tasksQueueSize()}flushTasksQueue(e){for(;this.tasksQueueSize(e)>0;)this.executeTask(e,this.dequeueTask(e));this.workerNodes[e].clearTasksQueue()}flushTasksQueues(){for(const[e]of this.workerNodes.entries())this.flushTasksQueue(e)}}class P extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}setupHook(){t.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return t.isPrimary}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e].worker,s=new Promise((e=>{t.on("exit",(()=>{e()}))}));t.on("disconnect",(()=>{t.kill()})),this.sendToWorker(e,{kill:!0,workerId:t.id}),t.disconnect(),await s}sendToWorker(e,t){this.workerNodes[e].worker.send(t)}sendStartupMessageToWorker(e){this.sendToWorker(e,{ready:!1,workerId:this.workerNodes[e].worker.id})}registerWorkerMessageListener(e,t){this.workerNodes[e].worker.on("message",t)}createWorker(){return t.fork(this.opts.env)}get type(){return k.fixed}get worker(){return K.cluster}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}class U extends A{opts;constructor(e,t,s={}){super(e,t,s),this.opts=s}isMain(){return n.isMainThread}async destroyWorkerNode(e){this.flushTasksQueue(e);const t=this.workerNodes[e],s=t.worker,r=new Promise((e=>{s.on("exit",(()=>{e()}))}));this.sendToWorker(e,{kill:!0,workerId:s.threadId}),t.closeChannel(),await s.terminate(),await r}sendToWorker(e,t){this.getWorkerInfo(e).messageChannel.port1.postMessage(t)}sendStartupMessageToWorker(e){const t=this.workerNodes[e].worker,s=this.getWorkerInfo(e).messageChannel.port2;t.postMessage({ready:!1,workerId:t.threadId,port:s},[s])}registerWorkerMessageListener(e,t){this.getWorkerInfo(e).messageChannel.port1.on("message",t)}createWorker(){return new n.Worker(this.filePath,{env:n.SHARE_ENV,...this.opts.workerOptions})}get type(){return k.fixed}get worker(){return K.thread}get minSize(){return this.numberOfWorkers}get maxSize(){return this.numberOfWorkers}get busy(){return this.internalBusy()}}const D=6e4,F=W.SOFT;class _ extends a.AsyncResource{isMain;mainWorker;opts;taskFunctions;lastTaskTimestamp;statistics;activeInterval;constructor(e,t,s,r,i={killBehavior:F,maxInactiveTime:D}){super(e),this.isMain=t,this.mainWorker=s,this.opts=i,this.checkWorkerOptions(this.opts),this.checkTaskFunctions(r),this.isMain||this.getMainWorker()?.on("message",this.handleReadyMessage.bind(this))}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??F,this.opts.maxInactiveTime=e.maxInactiveTime??D,delete this.opts.async}checkTaskFunctions(e){if(null==e)throw new Error("taskFunctions parameter is mandatory");if(this.taskFunctions=new Map,"function"==typeof e){const t=e.bind(this);this.taskFunctions.set(l,t),this.taskFunctions.set("string"==typeof e.name&&e.name.trim().length>0?e.name:"fn1",t)}else{if(!f(e))throw new TypeError("taskFunctions parameter is not a function or a plain object");{let t=!0;for(const[s,r]of Object.entries(e)){if("string"!=typeof s)throw new TypeError("A taskFunctions parameter object key is not a string");if("function"!=typeof r)throw new TypeError("A taskFunctions parameter object value is not a function");const e=r.bind(this);t&&(this.taskFunctions.set(l,e),t=!1),this.taskFunctions.set(s,e)}if(t)throw new Error("taskFunctions parameter object is empty")}}}hasTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");return this.taskFunctions.has(e)}addTaskFunction(e,t){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot add a task function with the default reserved name");if("function"!=typeof t)throw new TypeError("fn parameter is not a function");try{const s=t.bind(this);return this.taskFunctions.get(e)===this.taskFunctions.get(l)&&this.taskFunctions.set(l,s),this.taskFunctions.set(e,s),!0}catch{return!1}}removeTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot remove the task function with the default reserved name");if(this.taskFunctions.get(e)===this.taskFunctions.get(l))throw new Error("Cannot remove the task function used as the default task function");return this.taskFunctions.delete(e)}listTaskFunctions(){return Array.from(this.taskFunctions.keys())}setDefaultTaskFunction(e){if("string"!=typeof e)throw new TypeError("name parameter is not a string");if(e===l)throw new Error("Cannot set the default task function reserved name as the default task function");if(!this.taskFunctions.has(e))throw new Error("Cannot set the default task function to a non-existing task function");try{return this.taskFunctions.set(l,this.taskFunctions.get(e)),!0}catch{return!1}}messageListener(e){e.workerId===this.id&&(null!=e.statistics?this.statistics=e.statistics:null!=e.checkActive?!this.isMain&&e.checkActive?this.startCheckActive():this.stopCheckActive():null!=e.id&&null!=e.data?this.run(e):!0===e.kill&&this.handleKillMessage(e))}handleKillMessage(e){!this.isMain&&this.stopCheckActive(),this.emitDestroy()}startCheckActive(){this.lastTaskTimestamp=r.performance.now(),this.activeInterval=setInterval(this.checkActive.bind(this),(this.opts.maxInactiveTime??D)/2)}stopCheckActive(){null!=this.activeInterval&&(clearInterval(this.activeInterval),delete this.activeInterval)}checkActive(){r.performance.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??D)&&this.sendToMainWorker({kill:this.opts.killBehavior,workerId:this.id})}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker not set");return this.mainWorker}handleError(e){return e instanceof Error?e.message:e}run(e){if(this.isMain)throw new Error("Cannot run a task in the main worker");const t=this.getTaskFunction(e.name);(e=>"function"==typeof e&&"AsyncFunction"===e.constructor.name)(t)?this.runInAsyncScope(this.runAsync.bind(this),this,t,e):this.runInAsyncScope(this.runSync.bind(this),this,t,e)}runSync(e,t){try{let s=this.beginTaskPerformance(t.name);const r=e(t.data);s=this.endTaskPerformance(s),this.sendToMainWorker({data:r,taskPerformance:s,workerId:this.id,id:t.id})}catch(e){const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,id:t.id})}finally{this.updateLastTaskTimestamp()}}runAsync(e,t){let s=this.beginTaskPerformance(t.name);e(t.data).then((e=>(s=this.endTaskPerformance(s),this.sendToMainWorker({data:e,taskPerformance:s,workerId:this.id,id:t.id}),null))).catch((e=>{const s=this.handleError(e);this.sendToMainWorker({taskError:{name:t.name??l,message:s,data:t.data},workerId:this.id,id:t.id})})).finally((()=>{this.updateLastTaskTimestamp()})).catch(m)}getTaskFunction(e){e=e??l;const t=this.taskFunctions.get(e);if(null==t)throw new Error(`Task function '${e}' not found`);return t}beginTaskPerformance(e){return this.checkStatistics(),{name:e??l,timestamp:r.performance.now(),...this.statistics.elu&&{elu:r.performance.eventLoopUtilization()}}}endTaskPerformance(e){return this.checkStatistics(),{...e,...this.statistics.runTime&&{runTime:r.performance.now()-e.timestamp},...this.statistics.elu&&{elu:r.performance.eventLoopUtilization(e.elu)}}}checkStatistics(){if(null==this.statistics)throw new Error("Performance statistics computation requirements not set")}updateLastTaskTimestamp(){this.isMain||null==this.activeInterval||(this.lastTaskTimestamp=r.performance.now())}}exports.ClusterWorker=class extends _{constructor(e,s={}){super("worker-cluster-pool:poolifier",t.isPrimary,t.worker,e,s)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||(this.getMainWorker()?.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}get id(){return this.getMainWorker().id}sendToMainWorker(e){this.getMainWorker().send(e)}},exports.DynamicClusterPool=class extends P{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.DynamicThreadPool=class extends U{max;constructor(e,t,s,r={}){super(e,s,r),this.max=t,this.checkDynamicPoolSize(this.numberOfWorkers,this.max)}get type(){return k.dynamic}get maxSize(){return this.max}get busy(){return this.full&&this.internalBusy()}},exports.FixedClusterPool=P,exports.FixedThreadPool=U,exports.KillBehaviors=W,exports.Measurements=x,exports.PoolEvents=d,exports.PoolTypes=k,exports.ThreadWorker=class extends _{port;constructor(e,t={}){super("worker-thread-pool:poolifier",n.isMainThread,n.parentPort,e,t)}handleReadyMessage(e){this.isMain||e.workerId!==this.id||null==e.ready||null==e.port||(this.port=e.port,this.port.on("message",this.messageListener.bind(this)),this.sendToMainWorker({ready:!0,workerId:this.id}))}handleKillMessage(e){super.handleKillMessage(e),this.port?.unref(),this.port?.close()}get id(){return n.threadId}sendToMainWorker(e){this.port.postMessage(e)}handleError(e){return e}},exports.WorkerChoiceStrategies=N,exports.WorkerTypes=K,exports.availableParallelism=()=>{let e=1;try{e=u.availableParallelism()}catch{const t=u.cpus();Array.isArray(t)&&t.length>0&&(e=t.length)}return e};

lib/pools/abstract-pool.d.ts

@@ -22,3 +22,3 @@ import type { MessageValue, PromiseResponseWrapper, Task } from '../utility-types';
     /**
-     * The execution response promise map.
+     * The task execution response promise map.
      *
@@ -30,3 +30,3 @@ * - `key`: The message id of each submitted task.
      */
-    protected promiseResponseMap: Map<string, PromiseResponseWrapper<Worker, Response>>;
+    protected promiseResponseMap: Map<string, PromiseResponseWrapper<Response>>;
     /**
@@ -62,5 +62,8 @@ * Worker choice strategy context referencing a worker choice algorithm implementation.
     get info(): PoolInfo;
+    /**
+     * The pool readiness boolean status.
+     */
     private get ready();
     /**
-     * Gets the approximate pool utilization.
+     * The approximate pool utilization.
      *
@@ -71,3 +74,3 @@ * @returns The pool utilization.
     /**
-     * Pool type.
+     * The pool type.
      *
@@ -78,21 +81,14 @@ * If it is `'dynamic'`, it provides the `max` property.
     /**
-     * Gets the worker type.
+     * The worker type.
      */
     protected abstract get worker(): WorkerType;
     /**
-     * Pool minimum size.
+     * The pool minimum size.
      */
     protected abstract get minSize(): number;
     /**
-     * Pool maximum size.
+     * The pool maximum size.
      */
     protected abstract get maxSize(): number;
     /**
-     * Get the worker given its id.
-     *
-     * @param workerId - The worker id.
-     * @returns The worker if found in the pool worker nodes, `undefined` otherwise.
-     */
-    private getWorkerById;
-    /**
      * Checks if the worker id sent in the received message from a worker is valid.
@@ -110,3 +106,10 @@ *
      */
-    protected getWorkerNodeKey(worker: Worker): number;
+    private getWorkerNodeKeyByWorker;
+    /**
+     * Gets the worker node key given its worker id.
+     *
+     * @param workerId - The worker id.
+     * @returns The worker node key if the worker id is found in the pool worker nodes, `-1` otherwise.
+     */
+    private getWorkerNodeKeyByWorkerId;
     /** @inheritDoc */
@@ -144,7 +147,7 @@ setWorkerChoiceStrategy(workerChoiceStrategy: WorkerChoiceStrategy, workerChoiceStrategyOptions?: WorkerChoiceStrategyOptions): void;
     /**
-     * Terminates the given worker.
+     * Terminates the worker node given its worker node key.
      *
-     * @param worker - A worker within `workerNodes`.
+     * @param workerNodeKey - The worker node key.
      */
-    protected abstract destroyWorker(worker: Worker): void | Promise<void>;
+    protected abstract destroyWorkerNode(workerNodeKey: number): Promise<void>;
     /**
@@ -173,6 +176,6 @@ * Setup hook to execute code before worker nodes are created in the abstract constructor.
      *
-     * @param worker - The worker.
+     * @param workerNodeKey - The worker node key.
      * @param message - The received message.
      */
-    protected afterTaskExecutionHook(worker: Worker, message: MessageValue<Response>): void;
+    protected afterTaskExecutionHook(workerNodeKey: number, message: MessageValue<Response>): void;
     private updateTaskStatisticsWorkerUsage;
@@ -187,3 +190,3 @@ private updateRunTimeWorkerUsage;
      *
-     * @returns The worker node key
+     * @returns The chosen worker node key
      */
@@ -198,8 +201,8 @@ private chooseWorkerNode;
     /**
-     * Sends a message to the given worker.
+     * Sends a message to worker given its worker node key.
      *
-     * @param worker - The worker which should receive the message.
+     * @param workerNodeKey - The worker node key.
      * @param message - The message.
      */
-    protected abstract sendToWorker(worker: Worker, message: MessageValue<Data>): void;
+    protected abstract sendToWorker(workerNodeKey: number, message: MessageValue<Data>): void;
     /**
@@ -212,36 +215,42 @@ * Creates a new worker.
     /**
-     * Creates a new worker and sets it up completely in the pool worker nodes.
+     * Creates a new, completely set up worker node.
      *
-     * @returns New, completely set up worker.
+     * @returns New, completely set up worker node key.
      */
-    protected createAndSetupWorker(): Worker;
+    protected createAndSetupWorkerNode(): number;
     /**
-     * Creates a new dynamic worker and sets it up completely in the pool worker nodes.
+     * Creates a new, completely set up dynamic worker node.
      *
-     * @returns New, completely set up dynamic worker.
+     * @returns New, completely set up dynamic worker node key.
      */
-    protected createAndSetupDynamicWorker(): Worker;
+    protected createAndSetupDynamicWorkerNode(): number;
     /**
-     * Registers a listener callback on the given worker.
+     * Registers a listener callback on the worker given its worker node key.
      *
-     * @param worker - The worker which should register a listener.
+     * @param workerNodeKey - The worker node key.
      * @param listener - The message listener callback.
      */
-    protected abstract registerWorkerMessageListener<Message extends Data | Response>(worker: Worker, listener: (message: MessageValue<Message>) => void): void;
+    protected abstract registerWorkerMessageListener<Message extends Data | Response>(workerNodeKey: number, listener: (message: MessageValue<Message>) => void): void;
     /**
-     * Function that can be hooked up when a worker has been newly created and moved to the pool worker nodes.
+     * Method hooked up after a worker node has been newly created.
      * Can be overridden.
      *
-     * @param worker - The newly created worker.
+     * @param workerNodeKey - The newly created worker node key.
      */
-    protected afterWorkerSetup(worker: Worker): void;
+    protected afterWorkerNodeSetup(workerNodeKey: number): void;
     /**
-     * Sends the startup message to the given worker.
+     * Sends the startup message to worker given its worker node key.
      *
-     * @param worker - The worker which should receive the startup message.
+     * @param workerNodeKey - The worker node key.
      */
-    protected abstract sendStartupMessageToWorker(worker: Worker): void;
+    protected abstract sendStartupMessageToWorker(workerNodeKey: number): void;
+    /**
+     * Sends the worker statistics message to worker given its worker node key.
+     *
+     * @param workerNodeKey - The worker node key.
+     */
+    private sendWorkerStatisticsMessageToWorker;
     private redistributeQueuedTasks;
     /**
-     * This function is the listener registered for each worker message.
+     * This method is the listener registered for each worker message.
      *
@@ -255,3 +264,3 @@ * @returns The listener function to execute when a message is received from a worker.
     /**
-     * Gets the worker information from the given worker node key.
+     * Gets the worker information given its worker node key.
      *
@@ -261,16 +270,9 @@ * @param workerNodeKey - The worker node key.
      */
-    private getWorkerInfo;
+    protected getWorkerInfo(workerNodeKey: number): WorkerInfo;
     /**
-     * Gets the worker information from the given worker.
-     *
-     * @param worker - The worker.
-     * @returns The worker information.
-     * @throws {@link https://nodejs.org/api/errors.html#class-error} If the worker is not found.
-     */
-    protected getWorkerInfoByWorker(worker: Worker): WorkerInfo;
-    /**
      * Adds the given worker in the pool worker nodes.
      *
      * @param worker - The worker.
-     * @returns The worker nodes length.
+     * @returns The added worker node key.
+     * @throws {@link https://nodejs.org/api/errors.html#class-error} If the added worker node is not found.
      */
@@ -285,5 +287,5 @@ private addWorkerNode;
     /**
-     * Executes the given task on the given worker.
+     * Executes the given task on the worker given its worker node key.
      *
-     * @param worker - The worker.
+     * @param workerNodeKey - The worker node key.
      * @param task - The task to execute.
@@ -295,5 +297,4 @@ */
     private tasksQueueSize;
-    private flushTasksQueue;
+    protected flushTasksQueue(workerNodeKey: number): void;
     private flushTasksQueues;
-    private setWorkerStatistics;
 }

lib/pools/cluster/fixed.d.ts

@@ -47,9 +47,9 @@ /// <reference types="node" />
     /** @inheritDoc */
-    protected destroyWorker(worker: Worker): void;
+    protected destroyWorkerNode(workerNodeKey: number): Promise<void>;
     /** @inheritDoc */
-    protected sendToWorker(worker: Worker, message: MessageValue<Data>): void;
+    protected sendToWorker(workerNodeKey: number, message: MessageValue<Data>): void;
     /** @inheritDoc */
-    protected sendStartupMessageToWorker(worker: Worker): void;
+    protected sendStartupMessageToWorker(workerNodeKey: number): void;
     /** @inheritDoc */
-    protected registerWorkerMessageListener<Message extends Data | Response>(worker: Worker, listener: (message: MessageValue<Message>) => void): void;
+    protected registerWorkerMessageListener<Message extends Data | Response>(workerNodeKey: number, listener: (message: MessageValue<Message>) => void): void;
     /** @inheritDoc */
@@ -56,0 +56,0 @@ protected createWorker(): Worker;

lib/pools/pool.d.ts

@@ -52,3 +52,3 @@ /// <reference types="node" />
     readonly maxSize: number;
-    /** Pool utilization ratio. */
+    /** Pool utilization. */
     readonly utilization?: number;
@@ -180,3 +180,3 @@ /** Pool total worker nodes. */
     /**
-     * Terminates every current worker in this pool.
+     * Terminates all workers in this pool.
      */
@@ -183,0 +183,0 @@ readonly destroy: () => Promise<void>;

lib/pools/selection-strategies/worker-choice-strategy-context.d.ts

@@ -56,3 +56,3 @@ import type { IPool } from '../pool';
      *
-     * @param workerNodeKey - The key of the worker node.
+     * @param workerNodeKey - The worker node key.
      * @returns `true` if the removal is successful, `false` otherwise.
@@ -59,0 +59,0 @@ */

lib/pools/thread/fixed.d.ts

@@ -39,9 +39,9 @@ /// <reference types="node" />
     /** @inheritDoc */
-    protected destroyWorker(worker: Worker): Promise<void>;
+    protected destroyWorkerNode(workerNodeKey: number): Promise<void>;
     /** @inheritDoc */
-    protected sendToWorker(worker: Worker, message: MessageValue<Data>): void;
+    protected sendToWorker(workerNodeKey: number, message: MessageValue<Data>): void;
     /** @inheritDoc */
-    protected sendStartupMessageToWorker(worker: Worker): void;
+    protected sendStartupMessageToWorker(workerNodeKey: number): void;
     /** @inheritDoc */
-    protected registerWorkerMessageListener<Message extends Data | Response>(worker: Worker, listener: (message: MessageValue<Message>) => void): void;
+    protected registerWorkerMessageListener<Message extends Data | Response>(workerNodeKey: number, listener: (message: MessageValue<Message>) => void): void;
     /** @inheritDoc */
@@ -48,0 +48,0 @@ protected createWorker(): Worker;

lib/pools/version.d.ts

@@ -1,1 +0,1 @@
-export declare const version = "2.6.19";
+export declare const version = "2.6.20";

lib/utility-types.d.ts

@@ -6,3 +6,2 @@ /// <reference types="node" />
 import type { KillBehavior } from './worker/worker-options';
-import type { IWorker } from './pools/worker';
 /**
@@ -125,9 +124,8 @@ * Task error.
 /**
- * An object holding the execution response promise resolve/reject callbacks.
+ * An object holding the task execution response promise resolve/reject callbacks.
  *
- * @typeParam Worker - Type of worker.
  * @typeParam Response - Type of execution response. This can only be structured-cloneable data.
  * @internal
  */
-export interface PromiseResponseWrapper<Worker extends IWorker, Response = unknown> {
+export interface PromiseResponseWrapper<Response = unknown> {
     /**
@@ -142,5 +140,5 @@ * Resolve callback to fulfill the promise.
     /**
-     * The worker handling the execution.
+     * The worker node key executing the task.
      */
-    readonly worker: Worker;
+    readonly workerNodeKey: number;
 }

lib/worker/abstract-worker.d.ts

@@ -142,3 +142,3 @@ /// <reference types="node" />
     /**
-     * Sends a message to the main worker.
+     * Sends a message to main worker.
      *
@@ -145,0 +145,0 @@ * @param message - The response message.

lib/worker/thread-worker.d.ts

@@ -23,3 +23,3 @@ /// <reference types="node" />
     /**
-     * Message port used to communicate with the main thread.
+     * Message port used to communicate with the main worker.
      */
@@ -26,0 +26,0 @@ private port;

package.json

 {
   "name": "poolifier",
-  "version": "2.6.19",
+  "version": "2.6.20",
   "description": "A fast, easy to use Node.js Worker Thread Pool and Cluster Pool implementation",
@@ -28,3 +28,3 @@ "license": "MIT",
   "volta": {
-    "node": "20.4.0",
+    "node": "20.5.0",
     "pnpm": "8.6.9"
@@ -31,0 +31,0 @@ },

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Total package byte prevSize

216251

increased by1.02%

Lines of code

2597

increased by0.31%

Published versions last year

71

increased by1.43%

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