| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.activemq.transport.http; |
| |
| import java.net.URI; |
| |
| import javax.servlet.ServletException; |
| |
| import org.apache.activemq.broker.BrokerService; |
| import org.apache.activemq.transport.TransportAcceptListener; |
| |
| /** |
| * This servlet embeds an ActiveMQ broker inside a servlet engine which is ideal |
| * for deploying ActiveMQ inside a WAR and using this servlet as a HTTP tunnel. |
| * |
| * |
| */ |
| public class HttpEmbeddedTunnelServlet extends HttpTunnelServlet { |
| private static final long serialVersionUID = -3705734740251302361L; |
| |
| protected BrokerService broker; |
| protected HttpTransportServer transportConnector; |
| |
| public synchronized void init() throws ServletException { |
| // lets initialize the ActiveMQ broker |
| try { |
| if (broker == null) { |
| broker = createBroker(); |
| |
| // Add the servlet connector |
| String url = getConnectorURL(); |
| HttpTransportFactory factory = new HttpTransportFactory(); |
| transportConnector = (HttpTransportServer) factory.doBind(new URI(url)); |
| broker.addConnector(transportConnector); |
| |
| String brokerURL = getServletContext().getInitParameter("org.apache.activemq.brokerURL"); |
| if (brokerURL != null) { |
| log("Listening for internal communication on: " + brokerURL); |
| } |
| } |
| broker.start(); |
| } catch (Exception e) { |
| throw new ServletException("Failed to start embedded broker: " + e, e); |
| } |
| // now lets register the listener |
| TransportAcceptListener listener = transportConnector.getAcceptListener(); |
| getServletContext().setAttribute("transportChannelListener", listener); |
| super.init(); |
| } |
| |
| /** |
| * Factory method to create a new broker |
| * |
| * @throws Exception |
| */ |
| protected BrokerService createBroker() throws Exception { |
| BrokerService answer = new BrokerService(); |
| return answer; |
| } |
| |
| protected String getConnectorURL() { |
| return "http://localhost/" + getServletContext().getServletContextName(); |
| } |
| } |