blob: fa6a44bfff7a54576a747160a3d9cb7e4efec7fa [file] [log] [blame]
/**
* @license
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {appContext} from './app-context.js';
import {FlagsService} from './flags.js';
import {GrReporting} from './gr-reporting/gr-reporting.js';
import {EventEmitter} from './gr-event-interface/gr-event-interface.js';
const initializedServices = new Map();
function getService(serviceName, serviceInit) {
if (!initializedServices.has(serviceName)) {
initializedServices.set(serviceName, serviceInit());
}
return initializedServices.get(serviceName);
}
/**
* The AppContext lazy initializator for all services
*/
export function initAppContext() {
const registeredServices = {};
function addService(serviceName, serviceCreator) {
if (registeredServices[serviceName]) {
throw new Error(`Service ${serviceName} already registered.`);
}
registeredServices[serviceName] = {
get() {
return getService(serviceName, serviceCreator);
},
};
}
addService('flagsService', () => new FlagsService());
addService('reportingService',
() => new GrReporting(appContext.flagsService));
addService('eventEmitter', () => new EventEmitter());
Object.defineProperties(appContext, registeredServices);
}