001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.component.http;
018
019 import java.util.HashMap;
020
021 import org.mortbay.jetty.Connector;
022 import org.mortbay.jetty.Server;
023 import org.mortbay.jetty.nio.SelectChannelConnector;
024 import org.mortbay.jetty.security.SslSocketConnector;
025 import org.mortbay.jetty.servlet.Context;
026 import org.mortbay.jetty.servlet.ServletHolder;
027
028 /**
029 * An HttpComponent which starts an embedded Jetty for to handle consuming from
030 * http endpoints.
031 *
032 * @version $Revision: 525142 $
033 */
034 public class JettyHttpComponent extends HttpComponent {
035
036 Server server;
037
038 class ConnectorRef {
039 Connector connector;
040 int refCount;
041
042 public ConnectorRef(Connector connector) {
043 this.connector = connector;
044 increment();
045 }
046
047 public int increment() {
048 return ++refCount;
049 }
050
051 public int decrement() {
052 return --refCount;
053 }
054 }
055
056 final HashMap<String, ConnectorRef> connectors = new HashMap<String, ConnectorRef>();
057
058 @Override
059 protected void doStart() throws Exception {
060 server = createServer();
061 super.doStart();
062 }
063
064 private Server createServer() throws Exception {
065 setCamelServlet(new CamelServlet());
066
067 Server server = new Server();
068 Context context = new Context(Context.NO_SECURITY | Context.NO_SESSIONS);
069
070 context.setContextPath("/");
071 ServletHolder holder = new ServletHolder();
072 holder.setServlet(getCamelServlet());
073 context.addServlet(holder, "/*");
074 server.setHandler(context);
075
076 server.start();
077 return server;
078 }
079
080 @Override
081 protected void doStop() throws Exception {
082 for (ConnectorRef connectorRef : connectors.values()) {
083 connectorRef.connector.stop();
084 }
085 connectors.clear();
086
087 server.stop();
088 super.doStop();
089 }
090
091 @Override
092 public void connect(HttpConsumer consumer) throws Exception {
093
094 // Make sure that there is a connector for the requested endpoint.
095 HttpEndpoint endpoint = (HttpEndpoint)consumer.getEndpoint();
096 String connectorKey = endpoint.getProtocol() + ":" + endpoint.getPort();
097
098 synchronized (connectors) {
099 ConnectorRef connectorRef = connectors.get(connectorKey);
100 if (connectorRef == null) {
101 Connector connector;
102 if ("https".equals(endpoint.getProtocol())) {
103 connector = new SslSocketConnector();
104 } else {
105 connector = new SelectChannelConnector();
106 }
107 connector.setPort(endpoint.getPort());
108 server.addConnector(connector);
109 connector.start();
110 connectorRef = new ConnectorRef(connector);
111 } else {
112 // ref track the connector
113 connectorRef.increment();
114 }
115 }
116
117 super.connect(consumer);
118 }
119
120 @Override
121 public void disconnect(HttpConsumer consumer) throws Exception {
122 super.disconnect(consumer);
123
124 // If the connector is not needed anymore.. then stop it.
125 HttpEndpoint endpoint = (HttpEndpoint)consumer.getEndpoint();
126 String connectorKey = endpoint.getProtocol() + ":" + endpoint.getPort();
127
128 synchronized (connectors) {
129 ConnectorRef connectorRef = connectors.get(connectorKey);
130 if (connectorRef != null) {
131 if (connectorRef.decrement() == 0) {
132 server.removeConnector(connectorRef.connector);
133 connectorRef.connector.stop();
134 connectors.remove(connectorKey);
135 }
136 }
137 }
138 }
139 }