front_end/startup/RuntimeInstantiator.js

/*
 * Copyright (C) 2014 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import * as RootModule from '../root/root.js';

// Legacy runtime namespace definitions
// @ts-ignore
self.Runtime = self.Runtime || {};
// @ts-ignore
Runtime = Runtime || {};
// The following two variables are initialized in `build_release_applications`
// @ts-ignore
Root.allDescriptors = Root.allDescriptors || [];
// @ts-ignore
Root.applicationDescriptor = Root.applicationDescriptor || undefined;

/** @type {Function} */
let appStartedPromiseCallback;
Runtime.appStarted = new Promise(fulfil => {
  appStartedPromiseCallback = fulfil;
});

/**
 * @param {string} appName
 * @return {!Promise.<void>}
 */
export async function startApplication(appName) {
  console.timeStamp('Root.Runtime.startApplication');

  /** @type {!Object<string, RootModule.Runtime.ModuleDescriptor>} */
  const allDescriptorsByName = {};
  for (let i = 0; i < Root.allDescriptors.length; ++i) {
    const d = Root.allDescriptors[i];
    allDescriptorsByName[d['name']] = d;
  }

  const configuration = Root.applicationDescriptor.modules;
  const moduleDescriptors = [];
  const coreModuleNames = [];
  for (let i = 0; i < configuration.length; ++i) {
    const descriptor = configuration[i];
    const name = descriptor['name'];
    moduleDescriptors.push(allDescriptorsByName[name]);
    if (descriptor['type'] === 'autostart') {
      coreModuleNames.push(name);
    }
  }

  for (let i = 0; i < moduleDescriptors.length; ++i) {
    moduleDescriptors[i].name = configuration[i]['name'];
    moduleDescriptors[i].condition = configuration[i]['condition'];
  }
  const runtimeInstance = RootModule.Runtime.Runtime.instance({forceNew: true, moduleDescriptors});
  // @ts-ignore Exposed for legacy layout tests
  self.runtime = runtimeInstance;
  if (coreModuleNames) {
    await runtimeInstance.loadAutoStartModules(coreModuleNames);
  }
  appStartedPromiseCallback();
}

/**
 * @param {string} appName
 * @return {!Promise.<void>}
 */
export async function startWorker(appName) {
  return startApplication(appName).then(sendWorkerReady);

  function sendWorkerReady() {
    self.postMessage('workerReady');
  }
}