[1374] | 1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
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| 2 | // |
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| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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| 4 | // you may not use this file except in compliance with the License. |
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| 5 | // You may obtain a copy of the License at |
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| 6 | // |
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| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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| 8 | // |
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| 9 | // Unless required by applicable law or agreed to in writing, software |
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| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 12 | // See the License for the specific language governing permissions and |
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| 13 | // limitations under the License. |
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| 14 | |
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| 15 | package de.ugoe.cs.autoquest.httpmonitor; |
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| 16 | |
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| 17 | import javax.servlet.Servlet; |
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| 18 | |
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| 19 | import org.eclipse.jetty.server.Server; |
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| 20 | import org.eclipse.jetty.servlet.ServletContextHandler; |
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| 21 | import org.eclipse.jetty.servlet.ServletHolder; |
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| 22 | |
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| 23 | import de.ugoe.cs.util.console.Console; |
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| 24 | |
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| 25 | /** |
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| 26 | * <p> |
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| 27 | * this is the web server, that is used either for the monitor or the proxy. It is initialized with |
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| 28 | * a port and the servlet to be deployed. It implements the {@link HttpMonitorComponent} to be |
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| 29 | * simply initialized, started, and stopped. |
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| 30 | * </p> |
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| 31 | * |
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| 32 | * @author Patrick Harms |
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| 33 | */ |
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| 34 | public class HttpMonitorServer implements HttpMonitorComponent { |
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[1381] | 35 | |
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[1374] | 36 | /** |
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| 37 | * the port to listen on |
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| 38 | */ |
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| 39 | private int port; |
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| 40 | |
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| 41 | /** |
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| 42 | * the jetty web server used for receiving messages |
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| 43 | */ |
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| 44 | private Server server; |
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| 45 | |
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| 46 | /** |
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| 47 | * the message listener to forward the messages to |
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| 48 | */ |
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| 49 | private Servlet servlet; |
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| 50 | |
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| 51 | /** |
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| 52 | * <p> |
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| 53 | * initializes the server with the port to listen on and the servlet to be deployed. |
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| 54 | * </p> |
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| 55 | * |
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| 56 | * @param port the port to listen on |
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| 57 | * @param servlet teh servlet to be deployed |
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| 58 | */ |
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| 59 | public HttpMonitorServer(int port, Servlet servlet) { |
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| 60 | this.port = port; |
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| 61 | this.servlet = servlet; |
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| 62 | } |
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| 63 | |
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| 64 | /* (non-Javadoc) |
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| 65 | * @see de.ugoe.cs.autoquest.htmlmonitor.HttpMonitorComponent#init() |
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| 66 | */ |
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| 67 | @Override |
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| 68 | public synchronized void init() { |
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| 69 | if (server != null) { |
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| 70 | throw new IllegalStateException("already initialized. First call stop()"); |
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| 71 | } |
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| 72 | |
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| 73 | server = new Server(port); |
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| 74 | |
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| 75 | /* |
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| 76 | // the following code can be used to support SSL directly |
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| 77 | server = new Server(); |
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| 78 | |
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| 79 | SslSocketConnector connector = new SslSocketConnector(); |
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| 80 | connector.setPort(port); |
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| 81 | connector.setKeystore("data/keystore"); |
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| 82 | connector.setPassword("123456"); |
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| 83 | connector.setKeyPassword("123456"); |
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| 84 | connector.setTruststore("data/keystore"); |
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| 85 | connector.setTrustPassword("123456"); |
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| 86 | server.addConnector(connector);*/ |
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| 87 | |
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| 88 | ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS); |
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| 89 | context.setContextPath("/"); |
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| 90 | server.setHandler(context); |
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| 91 | |
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| 92 | context.addServlet(new ServletHolder(servlet), "/*"); |
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| 93 | } |
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| 94 | |
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| 95 | /* (non-Javadoc) |
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| 96 | * @see de.ugoe.cs.autoquest.htmlmonitor.HttpMonitorComponent#start() |
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| 97 | */ |
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| 98 | @Override |
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| 99 | public synchronized void start() throws HttpMonitorException { |
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| 100 | if (server == null) { |
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| 101 | throw new IllegalStateException("server not initialized yet. First call init()"); |
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| 102 | } |
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| 103 | |
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| 104 | try { |
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| 105 | server.start(); |
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| 106 | } |
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| 107 | catch (Exception e) { |
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| 108 | throw new HttpMonitorException("could not start server", e); |
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| 109 | } |
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| 110 | } |
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| 111 | |
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| 112 | |
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| 113 | /* (non-Javadoc) |
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| 114 | * @see de.ugoe.cs.autoquest.htmlmonitor.HttpMonitorComponent#stop() |
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| 115 | */ |
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| 116 | @Override |
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| 117 | public synchronized void stop() { |
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| 118 | try { |
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| 119 | if (server != null) { |
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| 120 | server.stop(); |
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| 121 | } |
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| 122 | } |
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| 123 | catch (Exception e) { |
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| 124 | Console.printerrln("could not stop server: " + e.getMessage()); |
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| 125 | Console.logException(e); |
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| 126 | } |
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| 127 | } |
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| 128 | |
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| 129 | } |
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