/********************************************************************************
 * Copyright (C) 2020 Ericsson and others.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the Eclipse
 * Public License v. 2.0 are satisfied: GNU General Public License, version 2
 * with the GNU Classpath Exception which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 ********************************************************************************/ import { injectable , postConstruct } from 'inversify' ; /**
 * **Important: This component is not bound on Electron.**
 *
 * Component handling the different hosts the Theia backend should be reachable at.
 *
 * Hosts should be set through the `THEIA_HOSTS` environment variable as a comma-separated list of hosts.
 *
 * If you do not set this variable, we'll consider that we don't know where the application is hosted at.
 */ @ injectable ( ) export class BackendApplicationHosts { protected readonly _hosts = new Set < string > ( ) ; /**
     * Set of domains that the application is supposed to be reachable at.
     * If the set is empty it means that we don't know where we are hosted.
     * You can check for this with `.hasKnownHosts()`.
     */ get hosts ( ) : ReadonlySet < string > { return this . _hosts ; } @ postConstruct ( ) protected postConstruct ( ) { const theiaHostsEnv = process . env [ 'THEIA_HOSTS' ] ; if ( theiaHostsEnv ) { theiaHostsEnv . split ( ',' ) . forEach ( host => { const trimmed = host . trim ( ) ; if ( trimmed . length > 0 ) { this . _hosts . add ( trimmed ) ; } } ) ; } } /**
     * Do we know where we are hosted?
     */ hasKnownHosts ( ) { return this . _hosts . size > 0 ; } }