nightwatch/dist/runner/concurrency/worker-process.js

Easy to use Node.js based end-to-end testing solution for web applications using the W3C WebDriver API.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const path = require('path');
const Piscina = require('piscina');
const { isWorkerThread } = Piscina;
const EventEmitter = require('events');
const WorkerTask = require('./worker-task');
const WORKER_FILE = path.resolve(__dirname, 'task.js');
class WorkerPool extends EventEmitter {
    static get isWorkerThread() {
        return isWorkerThread;
    }
    get tasks() {
        return this.__tasks;
    }
    set tasks(tasks) {
        this.__tasks = tasks;
    }
    constructor(args, settings, maxWorkerCount) {
        super();
        this.settings = settings;
        this.piscina = new Piscina({
            filename: WORKER_FILE,
            maxThreads: maxWorkerCount,
            argv: args,
            env: {
                ...process.env,
                __NIGHTWATCH_PARALLEL_MODE: '1'
            }
        });
        this.__tasks = [];
        this.index = 0;
    }
    /**
     * adds a task to running worker queue
     */
    addTask({ label, argv, colors } = {}) {
        const workerTask = new WorkerTask({ piscina: this.piscina, index: this.index, label, argv, settings: this.settings });
        workerTask.on('message', (data) => {
            this.emit('message', data);
        });
        this.index++;
        this.__tasks.push(workerTask.runWorkerTask(colors));
    }
}
module.exports = WorkerPool;