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How to use childWorker method in wpt

Best JavaScript code snippet using wpt

agent.ts

Source:agent.ts

1import cluster from "cluster";2import signale from "signale";3export interface IAgentConfig {4    script: string;5    args: string[];6    slient: boolean;7    workerNumber: number;8}9let childWorkers: cluster.Worker[] = [];10const RESTARTDURATION = 60;11export default function start(config: IAgentConfig) {12    const masterConfig = {13        args: config.args,14        exec: config.script,15        slient: config.slient,16    };17    // build default master config18    cluster.setupMaster(masterConfig);19    const workerNumber: number = config.workerNumber;20    for (let i = 0; i < workerNumber; i++) {21        const worker: cluster.Worker =  cluster.fork();22        childWorkers.push(worker);23    }24    process.on("exit", () => killAllWorker());25    childWorkers.forEach((worker: cluster.Worker) => {26        doListenWork(worker);27    });28}29function doListenWork(childWorker: cluster.Worker) {30    childWorker.on("exit", handleWorkerExit);31    childWorker.on("error", handleWorkerError);32    childWorker.on("message", handleMessageFromWork);33}34function handleWorkerExit(exitCode: number, signal: string) {35    const liveWorkers: cluster.Worker[] = [];36    childWorkers.forEach((childWorker: cluster.Worker) => {37        if (!childWorker.isDead()) {38            liveWorkers.push(childWorker);39        }40    });41    childWorkers = liveWorkers;42    // resart43    setTimeout(() => {44        const newWorker = cluster.fork();45        liveWorkers.push(newWorker);46        // register event47        doListenWork(newWorker);48    }, RESTARTDURATION);49}50function handleWorkerError(err: Error) {51    let jsonErr = "";52    try {53        jsonErr = JSON.stringify(err);54    } catch (e) {55        // do nothing56    }57    signale.debug(jsonErr);58}59function handleMessageFromWork(message: object) {60    let msg = "";61    try {62        msg =  JSON.stringify(message);63    } catch (e) {64        //65    }66    signale.debug(msg);67}68/**69 * when node exit, kill all sub worker70 * @param childWorkers71 */72function killAllWorker() {73    for (const worker of childWorkers) {74        worker.kill();75    }...

ChildWorker.js

Source:ChildWorker.js

1const cluster = require('cluster')2const process = require('process')3import WORKER_STATUSES from './statuses'4import TaskQueue from '../TaskQueue'5class ChildWorker {6  // sends an identifyed msg to the Master7  static sendMsg(workerStatus) {8    const msg = { id: [cluster.worker.id], ...workerStatus }9    process.send(msg)10  }11  // worker events12  static toggleIPC(messageBroker, initialize) {13    return new Promise((resolve, reject) => {14      process.removeAllListeners('message')15      process.on('message', (msg) => resolve(messageBroker(msg)))16      initialize(ChildWorker.sendMsg)17    }).catch(e => {18      throw new Error(e)19    })20  }21  // default msg handler, used to start the task issued by the master22  static onMessageFromMaster(task) {23    const taskId = task._id24    TaskQueue.execute(task, ChildWorker.toggleIPC)25    .then(res => ChildWorker.onJobDone(res, taskId))26    .catch(error => ChildWorker.onJobFailed(error, taskId))27  }28  // exit the process when disconected event is issued by the master29  static onDisconnect() {30    process.exit(0)31  }32  // task events33  static onJobDone(result, taskId) {34    process.removeAllListeners('message')35    process.on('message', ChildWorker.onMessageFromMaster)36    const msg = { result, taskId, status: WORKER_STATUSES.IDLE }37    ChildWorker.sendMsg(msg)38  }39  static onJobFailed(error, taskId) {40    process.removeAllListeners('message')41    process.on('message', ChildWorker.onMessageFromMaster)42    const msg = { taskId, status: WORKER_STATUSES.IDLE_ERROR, error: {43      message: error.message,44      stack: error.stack,45      type: error.type,46      arguments: error.arguments47    }}48    ChildWorker.sendMsg(msg)49  }50}...

SdProcessChildWorker.ts

Source:SdProcessChildWorker.ts

1import { NeverEntryError } from "@simplysm/sd-core-common";2export class SdProcessChildWorker {3  public constructor(private readonly _id: number) {4  }5  public send(event: Exclude<string, "done" | "error" | "ready">, body?: any): void {6    if (!process.send) throw new NeverEntryError();7    if (event === "error" && body instanceof Error) {8      process.send({9        event: "error",10        sendId: this._id,11        body: { name: body.name, message: body.message, stack: body.stack }12      });13    }14    else {15      process.send({ event, sendId: this._id, body });16    }17  }18  public static defineWorker(fn: (worker: SdProcessChildWorker, args: any[]) => Promise<any> | any): void {19    process.on("message", async (args: any[]) => {20      const childWorker = new SdProcessChildWorker(args[0]);21      try {22        const result = await fn(childWorker, args.slice(1).map((item) => (item == null ? undefined : item)));23        childWorker.send("done", result);24      }25      catch (err) {26        childWorker.send("error", err);27      }28    });29    if (!process.send) throw new NeverEntryError();30    process.send({ event: "ready" });31  }...

Using AI Code Generation

1var wpt = require('webpagetest');2var childWorker = require('child_process').fork(__dirname + '/child.js');3var wpt = new WebPageTest('www.webpagetest.org');4  if (err) return console.error(err);5  console.log('Test ID: ' + data);6  console.log('Test ID: ' + data);7  childWorker.send(data);8});9var wpt = require('webpagetest');10var wpt = new WebPageTest('www.webpagetest.org');11process.on('message', function(data) {12  wpt.getTestResults(data, function(err, data) {13    if (err) return console.error(err);14    console.log(data);15  });16});17I have a nodejs server which is using the webpagetest npm package to run tests. I am trying to use the child_process.fork() method to run the tests in a child process so that the main process can continue to accept requests. I am able to successfully run the tests in the child process but the main process is not able to get the results. I have tried the following code but it is not working. I am getting an error on the child.js file

Using AI Code Generation

1var wpt = require('webpagetest');2var webPageTest = new wpt('www.webpagetest.org');3    console.log(data);4});5var wpt = require('webpagetest');6var webPageTest = new wpt('www.webpagetest.org');7    console.log(data);8});9var wpt = require('webpagetest');10var webPageTest = new wpt('www.webpagetest.org');11    console.log(data);12});13var wpt = require('webpagetest');14var webPageTest = new wpt('www.webpagetest.org');15    console.log(data);16});17var wpt = require('webpagetest');18var webPageTest = new wpt('www.webpagetest.org');19    console.log(data);20});21var wpt = require('webpagetest');22var webPageTest = new wpt('www.webpagetest.org');23    console.log(data);24});25var wpt = require('webpagetest');26var webPageTest = new wpt('www.webpagetest.org');27    console.log(data);28});29var wpt = require('webpagetest');30var webPageTest = new wpt('www.webpagetest.org');

Using AI Code Generation

1var wptools = require('wptools');2var wp = new wptools();3wp.get('en', 'Albert Einstein', function(err, result){4  if(err){5    console.log(err);6  }else{7    console.log(result);8  }9});10####wptools([options])11Default: `os.cpus().length`  12Default: `os.cpus().length * 5`  13Default: `{}`

Using AI Code Generation

1var wptoolkit = require('wptoolkit');2var childWorker = wptoolkit.childWorker;3childWorker.start(function (data) {4  var result = data;5  childWorker.send(result);6});7#### childWorker.send(data)8#### childWorker.start(callback)9#### childWorker.on(event, callback)10#### childWorker.emit(event, data)11#### childWorker.onExit(callback)12#### childWorker.onDisconnect(callback)13#### childWorker.onMessage(callback)14#### childWorker.onClose(callback)15#### childWorker.onUncaughtException(callback)16#### childWorker.send(data)17#### childWorker.on(event, callback)18#### childWorker.emit(event, data)19#### childWorker.onExit(callback)20#### childWorker.onDisconnect(callback)21#### childWorker.onMessage(callback)22#### childWorker.onClose(callback)23#### childWorker.onUncaughtException(callback)

Using AI Code Generation

1var childWorker = require('wpt').childWorker;2var worker = childWorker.createWorker();3var workerFunction = function(name, callback) {4    var result = 'Hello ' + name;5    callback(null, result);6};7worker.register('workerFunction', workerFunction);8worker.call('workerFunction', 'World', function(err, result) {9    console.log(result);10});11worker.terminate();12var childWorker = require('wpt').childWorker;13var worker = childWorker.createWorker();14var workerFunction = function(name, callback) {15    var result = 'Hello ' + name;16    callback(null, result);17};18worker.register('workerFunction', workerFunction);19worker.call('workerFunction', 'World', function(err, result) {20    console.log(result);21});22worker.terminate();23var childWorker = require('wpt').childWorker;24var worker = childWorker.createWorker();25var workerFunction = function(name, callback) {26    var result = 'Hello ' + name;27    callback(null, result);28};29worker.register('workerFunction', workerFunction);30worker.call('workerFunction', 'World', function(err, result) {31    console.log(result);32});33worker.terminate();34var childWorker = require('wpt').childWorker;35var worker = childWorker.createWorker();36var workerFunction = function(name, callback) {37    var result = 'Hello ' + name;38    callback(null, result);39};40worker.register('workerFunction', workerFunction);41worker.call('workerFunction', 'World', function(err, result) {42    console.log(result);43});44worker.terminate();

Using AI Code Generation

1var wpt = require('./webpagetest.js');2var child = require('child_process');3var fs = require('fs');4var wpt = new WebPageTest('www.webpagetest.org', 'A.1c3f3b9e0e8c3f3b9e0e8c3f3b9e0e8');5var testID = '140418_0C_9X';6var location = 'Dulles:Chrome';7var options = {8};9wpt.getTestResults(testID, function(err, data) {10    if (err) return console.error(err);11    console.log(data.data.runs[1].firstView);12    console.log(data.data.runs[1].firstView.videoFrames);13    console.log(data.data.runs[1].firstView.videoFrames[0]);14    console.log(data.data.runs[1].firstView.videoFrames[0].frame);15    console.log(data.data.runs[1].firstView.videoFrames[0].time);16    console.log(data.data.runs[1].firstView.videoFrames[0].URL);17    console.log(data.data.runs[1].firstView.videoFrames[0].base64Image);18});

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