| /* |
| * Copyright 2013-present Facebook, Inc. |
| * |
| * 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. |
| */ |
| |
| package com.facebook.buck.httpserver; |
| |
| import org.eclipse.jetty.server.Handler; |
| import org.eclipse.jetty.server.Server; |
| import org.eclipse.jetty.server.handler.ContextHandlerCollection; |
| import org.eclipse.jetty.servlet.ServletContextHandler; |
| import org.eclipse.jetty.servlet.ServletHolder; |
| |
| /** |
| * A WebSocket server that reports events of buck. |
| */ |
| public class WebServer { |
| |
| private final int port; |
| private final Server server; |
| private final StreamingWebSocketServlet streamingWebSocketServlet; |
| |
| public WebServer(int port) { |
| this.port = port; |
| this.server = new Server(port); |
| this.streamingWebSocketServlet = new StreamingWebSocketServlet(); |
| } |
| |
| public int getPort() { |
| return port; |
| } |
| |
| public WebServerBuckEventListener createListener() { |
| return new WebServerBuckEventListener(this); |
| } |
| |
| public StreamingWebSocketServlet getStreamingWebSocketServlet() { |
| return streamingWebSocketServlet; |
| } |
| |
| public synchronized void start() throws WebServerException { |
| if (server.isStarted()) { |
| return; |
| } |
| |
| // Create a handler that acts as a WebSocket server. |
| ServletContextHandler servletContextHandler = new ServletContextHandler( |
| /* parent */ server, |
| /* contextPath */ "/comet", |
| /* sessions */ true, |
| /* security */ false); |
| servletContextHandler.addServlet(new ServletHolder(streamingWebSocketServlet), "/echo"); |
| |
| // Package up all of the handlers into a ContextHandlerCollection to serve as the handler for |
| // the server. |
| ContextHandlerCollection contexts = new ContextHandlerCollection(); |
| Handler[] handlers = new Handler[] {servletContextHandler}; |
| contexts.setHandlers(handlers); |
| server.setHandler(contexts); |
| try { |
| server.start(); |
| } catch (Exception e) { |
| throw new WebServerException("Can not start Websocket server.", e); |
| } |
| } |
| |
| public synchronized void stop() throws WebServerException { |
| if (!server.isRunning()) { |
| return; |
| } |
| try { |
| server.stop(); |
| } catch (Exception e) { |
| throw new WebServerException("Can not stop Websocket server.", e); |
| } |
| } |
| |
| @SuppressWarnings("serial") |
| public class WebServerException extends Exception { |
| |
| public WebServerException(String message, Exception clause) { |
| super(message, clause); |
| } |
| } |
| } |