qape/lib/master/index.js

Monkey testing library

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

/** @module master */

/**
 * Initializes all QApe workers and handles their communication.
 * @memberof master
 * @param {cluster} cluster
 * @param {Object} config
 */
var _default = (cluster, config) => {
  let exitCode = 0;
  let liveWorkers = 0;
  let reporter;
  let scriptwriter;
  initReporter();
  initScriptwriter();

  for (let i = 0; i < config.parallelInstances; i++) {
    liveWorkers++;
    initTester();
  }

  function initReporter() {
    reporter = cluster.fork({
      worker_type: 'reporter'
    }).on('exit', (code, signal) => {
      console.error(`Reporter died! [code:${code}, signal: ${signal}]`);
      initReporter();
    });
  }

  function initScriptwriter() {
    scriptwriter = cluster.fork({
      worker_type: 'scriptwriter'
    }).on('message', msg => {
      if (msg.reciever === 'tester') {
        cluster.workers[msg.workerId].send(msg.eventData);
      }
    }).on('exit', (code, signal) => {
      console.error(`Scriptwriter died! [code: ${code}, signal: ${signal}]`);
      initScriptwriter();
    });
  }

  function initTester() {
    let worker = cluster.fork();

    let timeoutHandler = () => worker.kill('SIGKILL');

    let timeout = setTimeout(timeoutHandler, config.testerTimeout);
    worker.on('message', msg => {
      clearTimeout(timeout);
      timeout = setTimeout(timeoutHandler, config.testerTimeout);
      let fullMsg = Object.assign({}, msg, {
        workerId: worker.id
      });

      if (msg.reciever === 'reporter') {
        reporter.send(fullMsg);
      }

      if (msg.reciever === 'scriptwriter') {
        scriptwriter.send(fullMsg);
      }
    }).on('exit', (code, signal) => {
      clearTimeout(timeout);
      console.log(`Tester ${worker.id} exited. [code: ${code}, signal: ${signal}]`); // eslint-disable-line no-console

      if (code > exitCode) {
        exitCode = code;
      }

      if (signal === 'SIGKILL') {
        initTester();
      } else {
        liveWorkers--;

        if (liveWorkers <= 0) {
          reporter.send({
            eventName: 'process:exit',
            eventData: {
              exitCode
            }
          });
          process.exit(exitCode);
        }
      }
    });
  }
};

exports.default = _default;