poolifier - npm Package Compare versions

Comparing version 2.3.8 to 2.3.9

lib/index.js

@@ -1,1 +0,1 @@
-"use strict";var e=require("cluster"),r=require("events"),t=require("os"),s=require("worker_threads"),o=require("async_hooks");const i=Object.freeze((()=>{})),n={};var a;!function(e){e.FIXED="fixed",e.DYNAMIC="dynamic"}(a||(a={}));const h=Object.freeze({SOFT:"SOFT",HARD:"HARD"});class k extends r{}const c=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LESS_RECENTLY_USED:"LESS_RECENTLY_USED",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN"});class u{pool;isDynamicPool;requiredStatistics={runTime:!1};constructor(e){this.pool=e,this.isDynamicPool=this.pool.type===a.DYNAMIC}}class l extends u{requiredStatistics={runTime:!0};workerLastVirtualTaskTimestamp=new Map;reset(){return this.workerLastVirtualTaskTimestamp.clear(),!0}choose(){let e,r=1/0;for(const t of this.pool.workers){this.computeWorkerLastVirtualTaskTimestamp(t);const s=this.workerLastVirtualTaskTimestamp.get(t)?.end??0;s<r&&(r=s,e=t)}return e}computeWorkerLastVirtualTaskTimestamp(e){const r=Math.max(Date.now(),this.workerLastVirtualTaskTimestamp.get(e)?.end??-1/0);this.workerLastVirtualTaskTimestamp.set(e,{start:r,end:r+(this.pool.getWorkerAverageTasksRunTime(e)??0)})}}class p extends u{reset(){return!0}choose(){let e,r=1/0;for(const t of this.pool.workers){const s=this.pool.getWorkerRunningTasks(t);if(!this.isDynamicPool&&0===s)return t;s<r&&(e=t,r=s)}return e}}class g extends u{nextWorkerIndex=0;reset(){return this.nextWorkerIndex=0,!0}choose(){const e=this.pool.workers[this.nextWorkerIndex];return this.nextWorkerIndex=this.nextWorkerIndex===this.pool.workers.length-1?0:this.nextWorkerIndex+1,e}}class m extends u{requiredStatistics={runTime:!0};currentWorkerIndex=0;defaultWorkerWeight;workersTaskRunTime=new Map;constructor(e){super(e),this.defaultWorkerWeight=this.computeWorkerWeight(),this.initWorkersTaskRunTime()}reset(){return this.currentWorkerIndex=0,this.workersTaskRunTime.clear(),this.initWorkersTaskRunTime(),!0}choose(){const e=this.pool.workers[this.currentWorkerIndex];this.isDynamicPool&&!this.workersTaskRunTime.has(e)&&this.initWorkerTaskRunTime(e);const r=this.workersTaskRunTime.get(e)?.runTime??0,t=this.workersTaskRunTime.get(e)?.weight??this.defaultWorkerWeight;return r<t?this.setWorkerTaskRunTime(e,t,r+(this.getWorkerVirtualTaskRunTime(e)??0)):(this.currentWorkerIndex=this.currentWorkerIndex===this.pool.workers.length-1?0:this.currentWorkerIndex+1,this.setWorkerTaskRunTime(this.pool.workers[this.currentWorkerIndex],t,0)),e}initWorkersTaskRunTime(){for(const e of this.pool.workers)this.initWorkerTaskRunTime(e)}initWorkerTaskRunTime(e){this.setWorkerTaskRunTime(e,this.defaultWorkerWeight,0)}setWorkerTaskRunTime(e,r,t){this.workersTaskRunTime.set(e,{weight:r,runTime:t})}getWorkerVirtualTaskRunTime(e){return this.pool.getWorkerAverageTasksRunTime(e)}computeWorkerWeight(){let e=0;for(const r of t.cpus()){const t=r.speed.toString().length-1;e+=1/(r.speed/Math.pow(10,t))*Math.pow(10,t)}return Math.round(e/t.cpus().length)}}function T(e,r=c.ROUND_ROBIN){switch(r){case c.ROUND_ROBIN:return new g(e);case c.LESS_RECENTLY_USED:return new p(e);case c.FAIR_SHARE:return new l(e);case c.WEIGHTED_ROUND_ROBIN:return new m(e);default:throw new Error(`Worker choice strategy '${r}' not found`)}}class W extends u{createDynamicallyWorkerCallback;workerChoiceStrategy;constructor(e,r,t=c.ROUND_ROBIN){super(e),this.createDynamicallyWorkerCallback=r,this.workerChoiceStrategy=T(this.pool,t),this.requiredStatistics=this.workerChoiceStrategy.requiredStatistics}reset(){return this.workerChoiceStrategy.reset()}choose(){const e=this.pool.findFreeWorker();return!1!==e?e:this.pool.busy?this.workerChoiceStrategy.choose():this.createDynamicallyWorkerCallback()}}class w{pool;createDynamicallyWorkerCallback;workerChoiceStrategy;constructor(e,r,t=c.ROUND_ROBIN){this.pool=e,this.createDynamicallyWorkerCallback=r,this.setWorkerChoiceStrategy(t)}getPoolWorkerChoiceStrategy(e=c.ROUND_ROBIN){return this.pool.type===a.DYNAMIC?new W(this.pool,this.createDynamicallyWorkerCallback,e):T(this.pool,e)}getWorkerChoiceStrategy(){return this.workerChoiceStrategy}setWorkerChoiceStrategy(e){this.workerChoiceStrategy?.reset(),this.workerChoiceStrategy=this.getPoolWorkerChoiceStrategy(e)}execute(){return this.workerChoiceStrategy.choose()}}class d{numberOfWorkers;filePath;opts;workers=[];workersTasksUsage=new Map;emitter;promiseMap=new Map;nextMessageId=0;workerChoiceStrategyContext;constructor(e,r,t){if(this.numberOfWorkers=e,this.filePath=r,this.opts=t,!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.setupHook();for(let e=1;e<=this.numberOfWorkers;e++)this.createAndSetupWorker();!0===this.opts.enableEvents&&(this.emitter=new k),this.workerChoiceStrategyContext=new w(this,(()=>{const e=this.createAndSetupWorker();return this.registerWorkerMessageListener(e,(r=>{var t;t=h.HARD,(r.kill===t||0===this.getWorkerRunningTasks(e))&&this.destroyWorker(e)})),e}),this.opts.workerChoiceStrategy)}checkFilePath(e){if(null==e||0===e.length)throw new Error("Please specify a file with a worker implementation")}checkNumberOfWorkers(e){if(null==e)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(e))throw new TypeError("Cannot instantiate a pool with a non integer number of workers");if(e<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===a.FIXED&&0===e)throw new Error("Cannot instantiate a fixed pool with no worker")}checkPoolOptions(e){this.opts.workerChoiceStrategy=e.workerChoiceStrategy??c.ROUND_ROBIN,this.opts.enableEvents=e.enableEvents??!0}get numberOfRunningTasks(){return this.promiseMap.size}getWorkerIndex(e){return this.workers.indexOf(e)}getWorkerRunningTasks(e){return this.workersTasksUsage.get(e)?.running}getWorkerAverageTasksRunTime(e){return this.workersTasksUsage.get(e)?.avgRunTime}setWorkerChoiceStrategy(e){this.opts.workerChoiceStrategy=e;for(const e of this.workers)this.resetWorkerTasksUsage(e);this.workerChoiceStrategyContext.setWorkerChoiceStrategy(e)}internalGetBusyStatus(){return this.numberOfRunningTasks>=this.numberOfWorkers&&!1===this.findFreeWorker()}findFreeWorker(){for(const e of this.workers)if(0===this.getWorkerRunningTasks(e))return e;return!1}async execute(e){const r=this.chooseWorker(),t=this.internalExecute(r,this.nextMessageId);return this.checkAndEmitBusy(),this.sendToWorker(r,{data:e??n,id:this.nextMessageId}),++this.nextMessageId,t}async destroy(){await Promise.all(this.workers.map((async e=>{await this.destroyWorker(e)})))}setupHook(){}beforePromiseWorkerResponseHook(e){this.increaseWorkerRunningTasks(e)}afterPromiseWorkerResponseHook(e,r){this.decreaseWorkerRunningTasks(r.worker),this.stepWorkerRunTasks(r.worker,1),this.updateWorkerTasksRunTime(r.worker,e.taskRunTime)}removeWorker(e){this.workers.splice(this.getWorkerIndex(e),1),this.removeWorkerTasksUsage(e)}chooseWorker(){return this.workerChoiceStrategyContext.execute()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??i),e.on("error",this.opts.errorHandler??i),e.on("online",this.opts.onlineHandler??i),e.on("exit",this.opts.exitHandler??i),e.once("exit",(()=>{this.removeWorker(e)})),this.workers.push(e),this.initWorkerTasksUsage(e),this.afterWorkerSetup(e),e}workerListener(){return e=>{if(void 0!==e.id){const r=this.promiseMap.get(e.id);void 0!==r&&(null!=e.error?r.reject(e.error):r.resolve(e.data),this.afterPromiseWorkerResponseHook(e,r),this.promiseMap.delete(e.id))}}}async internalExecute(e,r){return this.beforePromiseWorkerResponseHook(e),await new Promise(((t,s)=>{this.promiseMap.set(r,{resolve:t,reject:s,worker:e})}))}checkAndEmitBusy(){!0===this.opts.enableEvents&&this.busy&&this.emitter?.emit("busy")}increaseWorkerRunningTasks(e){this.stepWorkerRunningTasks(e,1)}decreaseWorkerRunningTasks(e){this.stepWorkerRunningTasks(e,-1)}stepWorkerRunningTasks(e,r){if(this.checkWorkerTasksUsage(e)){const t=this.workersTasksUsage.get(e);t.running=t.running+r,this.workersTasksUsage.set(e,t)}}stepWorkerRunTasks(e,r){if(this.checkWorkerTasksUsage(e)){const t=this.workersTasksUsage.get(e);t.run=t.run+r,this.workersTasksUsage.set(e,t)}}updateWorkerTasksRunTime(e,r){if(this.workerChoiceStrategyContext.getWorkerChoiceStrategy().requiredStatistics.runTime&&this.checkWorkerTasksUsage(e)){const t=this.workersTasksUsage.get(e);t.runTime+=r??0,0!==t.run&&(t.avgRunTime=t.runTime/t.run),this.workersTasksUsage.set(e,t)}}checkWorkerTasksUsage(e){const r=this.workersTasksUsage.has(e);if(!r)throw new Error("Worker could not be found in workers tasks usage map");return r}initWorkerTasksUsage(e){this.workersTasksUsage.set(e,{run:0,running:0,runTime:0,avgRunTime:0})}removeWorkerTasksUsage(e){this.workersTasksUsage.delete(e)}resetWorkerTasksUsage(e){this.removeWorkerTasksUsage(e),this.initWorkerTasksUsage(e)}}class y extends d{opts;constructor(e,r,t=n){super(e,r,t),this.opts=t}setupHook(){e.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return e.isPrimary}destroyWorker(e){this.sendToWorker(e,{kill:1}),e.kill()}sendToWorker(e,r){e.send(r)}registerWorkerMessageListener(e,r){e.on("message",r)}createWorker(){return e.fork(this.opts.env)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,super.workerListener())}get type(){return a.FIXED}get busy(){return this.internalGetBusyStatus()}}class f extends d{constructor(e,r,t={}){super(e,r,t)}isMain(){return s.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:1}),await e.terminate()}sendToWorker(e,r){e.postMessage(r)}registerWorkerMessageListener(e,r){e.port2?.on("message",r)}createWorker(){return new s.Worker(this.filePath,{env:s.SHARE_ENV})}afterWorkerSetup(e){const{port1:r,port2:t}=new s.MessageChannel;e.postMessage({parent:r},[r]),e.port1=r,e.port2=t,this.registerWorkerMessageListener(e,super.workerListener())}get type(){return a.FIXED}get busy(){return this.internalGetBusyStatus()}}const R=6e4,x=h.SOFT;class S extends o.AsyncResource{mainWorker;lastTaskTimestamp;aliveInterval;opts;constructor(e,r,t,s,o={killBehavior:x,maxInactiveTime:R}){super(e),this.mainWorker=s,this.opts=o,this.checkFunctionInput(t),this.checkWorkerOptions(this.opts),this.lastTaskTimestamp=Date.now(),r||(this.aliveInterval=setInterval(this.checkAlive.bind(this),(this.opts.maxInactiveTime??R)/2),this.checkAlive.bind(this)()),this.mainWorker?.on("message",(e=>{this.messageListener(e,t)}))}messageListener(e,r){void 0!==e.data&&void 0!==e.id?!0===this.opts.async?this.runInAsyncScope(this.runAsync.bind(this),this,r,e):this.runInAsyncScope(this.run.bind(this),this,r,e):void 0!==e.parent?this.mainWorker=e.parent:void 0!==e.kill&&(null!=this.aliveInterval&&clearInterval(this.aliveInterval),this.emitDestroy())}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??x,this.opts.maxInactiveTime=e.maxInactiveTime??R,this.opts.async=e.async??!1}checkFunctionInput(e){if(null==e)throw new Error("fn parameter is mandatory");if("function"!=typeof e)throw new TypeError("fn parameter is not a function")}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker was not set");return this.mainWorker}checkAlive(){Date.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??R)&&this.sendToMainWorker({kill:this.opts.killBehavior})}handleError(e){return e}run(e,r){try{const t=Date.now(),s=e(r.data),o=Date.now()-t;this.sendToMainWorker({data:s,id:r.id,taskRunTime:o})}catch(e){const t=this.handleError(e);this.sendToMainWorker({error:t,id:r.id})}finally{this.lastTaskTimestamp=Date.now()}}runAsync(e,r){const t=Date.now();e(r.data).then((e=>{const s=Date.now()-t;return this.sendToMainWorker({data:e,id:r.id,taskRunTime:s}),null})).catch((e=>{const t=this.handleError(e);this.sendToMainWorker({error:t,id:r.id})})).finally((()=>{this.lastTaskTimestamp=Date.now()})).catch(i)}}exports.ClusterWorker=class extends S{constructor(r,t=n){super("worker-cluster-pool:poolifier",e.isPrimary,r,e.worker,t)}sendToMainWorker(e){this.getMainWorker().send(e)}handleError(e){return e instanceof Error?e.message:e}},exports.DynamicClusterPool=class extends y{max;constructor(e,r,t,s=n){super(e,t,s),this.max=r}get type(){return a.DYNAMIC}get busy(){return this.workers.length===this.max}},exports.DynamicThreadPool=class extends f{max;constructor(e,r,t,s={}){super(e,t,s),this.max=r}get type(){return a.DYNAMIC}get busy(){return this.workers.length===this.max}},exports.FixedClusterPool=y,exports.FixedThreadPool=f,exports.KillBehaviors=h,exports.ThreadWorker=class extends S{constructor(e,r=n){super("worker-thread-pool:poolifier",s.isMainThread,e,s.parentPort,r)}sendToMainWorker(e){this.getMainWorker().postMessage(e)}},exports.WorkerChoiceStrategies=c;
+"use strict";var e,r=require("cluster"),t=require("events"),s=require("os"),o=require("worker_threads"),i=require("async_hooks");!function(e){e.FIXED="fixed",e.DYNAMIC="dynamic"}(e||(e={}));const n=Object.freeze((()=>{})),a=Object.freeze({SOFT:"SOFT",HARD:"HARD"});class h extends t{}const k=Object.freeze({ROUND_ROBIN:"ROUND_ROBIN",LESS_RECENTLY_USED:"LESS_RECENTLY_USED",FAIR_SHARE:"FAIR_SHARE",WEIGHTED_ROUND_ROBIN:"WEIGHTED_ROUND_ROBIN"});class c{pool;isDynamicPool;requiredStatistics={runTime:!1};constructor(r){this.pool=r,this.isDynamicPool=this.pool.type===e.DYNAMIC}}class u extends c{requiredStatistics={runTime:!0};workerLastVirtualTaskTimestamp=new Map;reset(){return this.workerLastVirtualTaskTimestamp.clear(),!0}choose(){let e,r=1/0;for(const t of this.pool.workers){this.computeWorkerLastVirtualTaskTimestamp(t);const s=this.workerLastVirtualTaskTimestamp.get(t)?.end??0;s<r&&(r=s,e=t)}return e}computeWorkerLastVirtualTaskTimestamp(e){const r=Math.max(Date.now(),this.workerLastVirtualTaskTimestamp.get(e)?.end??-1/0);this.workerLastVirtualTaskTimestamp.set(e,{start:r,end:r+(this.pool.getWorkerAverageTasksRunTime(e)??0)})}}class l extends c{reset(){return!0}choose(){let e,r=1/0;for(const t of this.pool.workers){const s=this.pool.getWorkerRunningTasks(t);if(!this.isDynamicPool&&0===s)return t;s<r&&(e=t,r=s)}return e}}class p extends c{nextWorkerIndex=0;reset(){return this.nextWorkerIndex=0,!0}choose(){const e=this.pool.workers[this.nextWorkerIndex];return this.nextWorkerIndex=this.nextWorkerIndex===this.pool.workers.length-1?0:this.nextWorkerIndex+1,e}}class g extends c{requiredStatistics={runTime:!0};currentWorkerIndex=0;defaultWorkerWeight;workersTaskRunTime=new Map;constructor(e){super(e),this.defaultWorkerWeight=this.computeWorkerWeight(),this.initWorkersTaskRunTime()}reset(){return this.currentWorkerIndex=0,this.workersTaskRunTime.clear(),this.initWorkersTaskRunTime(),!0}choose(){const e=this.pool.workers[this.currentWorkerIndex];this.isDynamicPool&&!this.workersTaskRunTime.has(e)&&this.initWorkerTaskRunTime(e);const r=this.workersTaskRunTime.get(e)?.runTime??0,t=this.workersTaskRunTime.get(e)?.weight??this.defaultWorkerWeight;return r<t?this.setWorkerTaskRunTime(e,t,r+(this.getWorkerVirtualTaskRunTime(e)??0)):(this.currentWorkerIndex=this.currentWorkerIndex===this.pool.workers.length-1?0:this.currentWorkerIndex+1,this.setWorkerTaskRunTime(this.pool.workers[this.currentWorkerIndex],t,0)),e}initWorkersTaskRunTime(){for(const e of this.pool.workers)this.initWorkerTaskRunTime(e)}initWorkerTaskRunTime(e){this.setWorkerTaskRunTime(e,this.defaultWorkerWeight,0)}setWorkerTaskRunTime(e,r,t){this.workersTaskRunTime.set(e,{weight:r,runTime:t})}getWorkerVirtualTaskRunTime(e){return this.pool.getWorkerAverageTasksRunTime(e)}computeWorkerWeight(){let e=0;for(const r of s.cpus()){const t=r.speed.toString().length-1;e+=1/(r.speed/Math.pow(10,t))*Math.pow(10,t)}return Math.round(e/s.cpus().length)}}function m(e,r=k.ROUND_ROBIN){switch(r){case k.ROUND_ROBIN:return new p(e);case k.LESS_RECENTLY_USED:return new l(e);case k.FAIR_SHARE:return new u(e);case k.WEIGHTED_ROUND_ROBIN:return new g(e);default:throw new Error(`Worker choice strategy '${r}' not found`)}}class T extends c{createDynamicallyWorkerCallback;workerChoiceStrategy;constructor(e,r,t=k.ROUND_ROBIN){super(e),this.createDynamicallyWorkerCallback=r,this.workerChoiceStrategy=m(this.pool,t),this.requiredStatistics=this.workerChoiceStrategy.requiredStatistics}reset(){return this.workerChoiceStrategy.reset()}choose(){const e=this.pool.findFreeWorker();return!1!==e?e:this.pool.busy?this.workerChoiceStrategy.choose():this.createDynamicallyWorkerCallback()}}class W{pool;createDynamicallyWorkerCallback;workerChoiceStrategy;constructor(e,r,t=k.ROUND_ROBIN){this.pool=e,this.createDynamicallyWorkerCallback=r,this.setWorkerChoiceStrategy(t)}getPoolWorkerChoiceStrategy(r=k.ROUND_ROBIN){return this.pool.type===e.DYNAMIC?new T(this.pool,this.createDynamicallyWorkerCallback,r):m(this.pool,r)}getWorkerChoiceStrategy(){return this.workerChoiceStrategy}setWorkerChoiceStrategy(e){this.workerChoiceStrategy?.reset(),this.workerChoiceStrategy=this.getPoolWorkerChoiceStrategy(e)}execute(){return this.workerChoiceStrategy.choose()}}class w{numberOfWorkers;filePath;opts;workers=[];workersTasksUsage=new Map;emitter;promiseMap=new Map;nextMessageId=0;workerChoiceStrategyContext;constructor(e,r,t){if(this.numberOfWorkers=e,this.filePath=r,this.opts=t,!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.setupHook();for(let e=1;e<=this.numberOfWorkers;e++)this.createAndSetupWorker();!0===this.opts.enableEvents&&(this.emitter=new h),this.workerChoiceStrategyContext=new W(this,(()=>{const e=this.createAndSetupWorker();return this.registerWorkerMessageListener(e,(r=>{var t;t=a.HARD,(r.kill===t||0===this.getWorkerRunningTasks(e))&&this.destroyWorker(e)})),e}),this.opts.workerChoiceStrategy)}checkFilePath(e){if(null==e||0===e.length)throw new Error("Please specify a file with a worker implementation")}checkNumberOfWorkers(r){if(null==r)throw new Error("Cannot instantiate a pool without specifying the number of workers");if(!Number.isSafeInteger(r))throw new TypeError("Cannot instantiate a pool with a non integer number of workers");if(r<0)throw new RangeError("Cannot instantiate a pool with a negative number of workers");if(this.type===e.FIXED&&0===r)throw new Error("Cannot instantiate a fixed pool with no worker")}checkPoolOptions(e){this.opts.workerChoiceStrategy=e.workerChoiceStrategy??k.ROUND_ROBIN,this.opts.enableEvents=e.enableEvents??!0}get numberOfRunningTasks(){return this.promiseMap.size}getWorkerIndex(e){return this.workers.indexOf(e)}getWorkerRunningTasks(e){return this.workersTasksUsage.get(e)?.running}getWorkerAverageTasksRunTime(e){return this.workersTasksUsage.get(e)?.avgRunTime}setWorkerChoiceStrategy(e){this.opts.workerChoiceStrategy=e;for(const e of this.workers)this.resetWorkerTasksUsage(e);this.workerChoiceStrategyContext.setWorkerChoiceStrategy(e)}internalGetBusyStatus(){return this.numberOfRunningTasks>=this.numberOfWorkers&&!1===this.findFreeWorker()}findFreeWorker(){for(const e of this.workers)if(0===this.getWorkerRunningTasks(e))return e;return!1}async execute(e){const r=this.chooseWorker(),t=this.internalExecute(r,this.nextMessageId);return this.checkAndEmitBusy(),this.sendToWorker(r,{data:e??{},id:this.nextMessageId}),++this.nextMessageId,t}async destroy(){await Promise.all(this.workers.map((async e=>{await this.destroyWorker(e)})))}setupHook(){}beforePromiseWorkerResponseHook(e){this.increaseWorkerRunningTasks(e)}afterPromiseWorkerResponseHook(e,r){this.decreaseWorkerRunningTasks(r.worker),this.stepWorkerRunTasks(r.worker,1),this.updateWorkerTasksRunTime(r.worker,e.taskRunTime)}removeWorker(e){this.workers.splice(this.getWorkerIndex(e),1),this.removeWorkerTasksUsage(e)}chooseWorker(){return this.workerChoiceStrategyContext.execute()}createAndSetupWorker(){const e=this.createWorker();return e.on("message",this.opts.messageHandler??n),e.on("error",this.opts.errorHandler??n),e.on("online",this.opts.onlineHandler??n),e.on("exit",this.opts.exitHandler??n),e.once("exit",(()=>{this.removeWorker(e)})),this.workers.push(e),this.initWorkerTasksUsage(e),this.afterWorkerSetup(e),e}workerListener(){return e=>{if(void 0!==e.id){const r=this.promiseMap.get(e.id);void 0!==r&&(null!=e.error?r.reject(e.error):r.resolve(e.data),this.afterPromiseWorkerResponseHook(e,r),this.promiseMap.delete(e.id))}}}async internalExecute(e,r){return this.beforePromiseWorkerResponseHook(e),await new Promise(((t,s)=>{this.promiseMap.set(r,{resolve:t,reject:s,worker:e})}))}checkAndEmitBusy(){!0===this.opts.enableEvents&&this.busy&&this.emitter?.emit("busy")}increaseWorkerRunningTasks(e){this.stepWorkerRunningTasks(e,1)}decreaseWorkerRunningTasks(e){this.stepWorkerRunningTasks(e,-1)}stepWorkerRunningTasks(e,r){if(this.checkWorkerTasksUsage(e)){const t=this.workersTasksUsage.get(e);t.running=t.running+r,this.workersTasksUsage.set(e,t)}}stepWorkerRunTasks(e,r){if(this.checkWorkerTasksUsage(e)){const t=this.workersTasksUsage.get(e);t.run=t.run+r,this.workersTasksUsage.set(e,t)}}updateWorkerTasksRunTime(e,r){if(this.workerChoiceStrategyContext.getWorkerChoiceStrategy().requiredStatistics.runTime&&this.checkWorkerTasksUsage(e)){const t=this.workersTasksUsage.get(e);t.runTime+=r??0,0!==t.run&&(t.avgRunTime=t.runTime/t.run),this.workersTasksUsage.set(e,t)}}checkWorkerTasksUsage(e){const r=this.workersTasksUsage.has(e);if(!r)throw new Error("Worker could not be found in workers tasks usage map");return r}initWorkerTasksUsage(e){this.workersTasksUsage.set(e,{run:0,running:0,runTime:0,avgRunTime:0})}removeWorkerTasksUsage(e){this.workersTasksUsage.delete(e)}resetWorkerTasksUsage(e){this.removeWorkerTasksUsage(e),this.initWorkerTasksUsage(e)}}class d extends w{opts;constructor(e,r,t={}){super(e,r,t),this.opts=t}setupHook(){r.setupPrimary({...this.opts.settings,exec:this.filePath})}isMain(){return r.isPrimary}destroyWorker(e){this.sendToWorker(e,{kill:1}),e.kill()}sendToWorker(e,r){e.send(r)}registerWorkerMessageListener(e,r){e.on("message",r)}createWorker(){return r.fork(this.opts.env)}afterWorkerSetup(e){this.registerWorkerMessageListener(e,super.workerListener())}get type(){return e.FIXED}get busy(){return this.internalGetBusyStatus()}}class y extends w{constructor(e,r,t={}){super(e,r,t)}isMain(){return o.isMainThread}async destroyWorker(e){this.sendToWorker(e,{kill:1}),await e.terminate()}sendToWorker(e,r){e.postMessage(r)}registerWorkerMessageListener(e,r){e.port2?.on("message",r)}createWorker(){return new o.Worker(this.filePath,{env:o.SHARE_ENV})}afterWorkerSetup(e){const{port1:r,port2:t}=new o.MessageChannel;e.postMessage({parent:r},[r]),e.port1=r,e.port2=t,this.registerWorkerMessageListener(e,super.workerListener())}get type(){return e.FIXED}get busy(){return this.internalGetBusyStatus()}}const f=6e4,R=a.SOFT;class x extends i.AsyncResource{mainWorker;lastTaskTimestamp;aliveInterval;opts;constructor(e,r,t,s,o={killBehavior:R,maxInactiveTime:f}){super(e),this.mainWorker=s,this.opts=o,this.checkFunctionInput(t),this.checkWorkerOptions(this.opts),this.lastTaskTimestamp=Date.now(),r||(this.aliveInterval=setInterval(this.checkAlive.bind(this),(this.opts.maxInactiveTime??f)/2),this.checkAlive.bind(this)()),this.mainWorker?.on("message",(e=>{this.messageListener(e,t)}))}messageListener(e,r){void 0!==e.data&&void 0!==e.id?!0===this.opts.async?this.runInAsyncScope(this.runAsync.bind(this),this,r,e):this.runInAsyncScope(this.run.bind(this),this,r,e):void 0!==e.parent?this.mainWorker=e.parent:void 0!==e.kill&&(null!=this.aliveInterval&&clearInterval(this.aliveInterval),this.emitDestroy())}checkWorkerOptions(e){this.opts.killBehavior=e.killBehavior??R,this.opts.maxInactiveTime=e.maxInactiveTime??f,this.opts.async=e.async??!1}checkFunctionInput(e){if(null==e)throw new Error("fn parameter is mandatory");if("function"!=typeof e)throw new TypeError("fn parameter is not a function")}getMainWorker(){if(null==this.mainWorker)throw new Error("Main worker was not set");return this.mainWorker}checkAlive(){Date.now()-this.lastTaskTimestamp>(this.opts.maxInactiveTime??f)&&this.sendToMainWorker({kill:this.opts.killBehavior})}handleError(e){return e}run(e,r){try{const t=Date.now(),s=e(r.data),o=Date.now()-t;this.sendToMainWorker({data:s,id:r.id,taskRunTime:o})}catch(e){const t=this.handleError(e);this.sendToMainWorker({error:t,id:r.id})}finally{this.lastTaskTimestamp=Date.now()}}runAsync(e,r){const t=Date.now();e(r.data).then((e=>{const s=Date.now()-t;return this.sendToMainWorker({data:e,id:r.id,taskRunTime:s}),null})).catch((e=>{const t=this.handleError(e);this.sendToMainWorker({error:t,id:r.id})})).finally((()=>{this.lastTaskTimestamp=Date.now()})).catch(n)}}exports.ClusterWorker=class extends x{constructor(e,t={}){super("worker-cluster-pool:poolifier",r.isPrimary,e,r.worker,t)}sendToMainWorker(e){this.getMainWorker().send(e)}handleError(e){return e instanceof Error?e.message:e}},exports.DynamicClusterPool=class extends d{max;constructor(e,r,t,s={}){super(e,t,s),this.max=r}get type(){return e.DYNAMIC}get busy(){return this.workers.length===this.max}},exports.DynamicThreadPool=class extends y{max;constructor(e,r,t,s={}){super(e,t,s),this.max=r}get type(){return e.DYNAMIC}get busy(){return this.workers.length===this.max}},exports.FixedClusterPool=d,exports.FixedThreadPool=y,exports.KillBehaviors=a,exports.ThreadWorker=class extends x{constructor(e,r={}){super("worker-thread-pool:poolifier",o.isMainThread,e,o.parentPort,r)}sendToMainWorker(e){this.getMainWorker().postMessage(e)}},exports.WorkerChoiceStrategies=k;

lib/utils.d.ts

@@ -5,5 +5,1 @@ /**
 export declare const EMPTY_FUNCTION: () => void;
-/**
- * An intentional empty object literal.
- */
-export declare const EMPTY_OBJECT_LITERAL: {};

package.json

 {
   "name": "poolifier",
-  "version": "2.3.8",
+  "version": "2.3.9",
   "description": "A fast, easy to use Node.js Worker Thread Pool and Cluster Pool implementation",
   "license": "MIT",
-  "main": "lib/index.js",
+  "exports": [
+    "lib/index.js",
+    "lib/index.mjs"
+  ],
   "scripts": {
@@ -101,3 +104,3 @@ "prepare": "node prepare.js",
     "eslint-config-standard-with-typescript": "^34.0.1",
-    "eslint-define-config": "^1.16.0",
+    "eslint-define-config": "^1.17.0",
     "eslint-import-resolver-typescript": "^3.5.3",
@@ -104,0 +107,0 @@ "eslint-plugin-import": "^2.27.5",

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