Source Code Cross Referenced for OILClientILService.java in  » EJB-Server-JBoss-4.2.1 » messaging » org » jboss » mq » il » oil » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server JBoss 4.2.1 » messaging » org.jboss.mq.il.oil 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * JBoss, Home of Professional Open Source.
003:         * Copyright 2006, Red Hat Middleware LLC, and individual contributors
004:         * as indicated by the @author tags. See the copyright.txt file in the
005:         * distribution for a full listing of individual contributors.
006:         *
007:         * This is free software; you can redistribute it and/or modify it
008:         * under the terms of the GNU Lesser General Public License as
009:         * published by the Free Software Foundation; either version 2.1 of
010:         * the License, or (at your option) any later version.
011:         *
012:         * This software is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015:         * Lesser General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU Lesser General Public
018:         * License along with this software; if not, write to the Free
019:         * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
021:         */
022:        package org.jboss.mq.il.oil;
023:
024:        import java.io.BufferedInputStream;
025:        import java.io.BufferedOutputStream;
026:        import java.io.IOException;
027:        import java.io.ObjectInputStream;
028:        import java.io.ObjectOutputStream;
029:        import java.net.ServerSocket;
030:        import java.net.Socket;
031:        import java.rmi.RemoteException;
032:
033:        import org.jboss.mq.Connection;
034:        import org.jboss.mq.ReceiveRequest;
035:        import org.jboss.mq.SpyDestination;
036:
037:        /**
038:         * The RMI implementation of the ConnectionReceiver object
039:         *
040:         * @author    Norbert Lataille (Norbert.Lataille@m4x.org)
041:         * @author    Hiram Chirino (Cojonudo14@hotmail.com)
042:         * @version   $Revision: 57198 $
043:         * @created   August 16, 2001
044:         */
045:        public final class OILClientILService implements  java.lang.Runnable,
046:                org.jboss.mq.il.ClientILService {
047:            private final static org.jboss.logging.Logger cat = org.jboss.logging.Logger
048:                    .getLogger(OILClientILService.class);
049:
050:            //the client IL
051:            private OILClientIL clientIL;
052:
053:            //The thread that is doing the Socket reading work
054:            private Thread worker;
055:
056:            // the connected client
057:            private Socket socket = null;
058:
059:            //A link on my connection
060:            private Connection connection;
061:
062:            //Should this service be running ?
063:            private boolean running;
064:
065:            //The server socket we listen for a connection on
066:            private ServerSocket serverSocket;
067:
068:            /**
069:             * Number of OIL Worker threads started.
070:             */
071:            private static int threadNumber = 0;
072:
073:            /**
074:             * If the TcpNoDelay option should be used on the socket.
075:             */
076:            private boolean enableTcpNoDelay = false;
077:
078:            /**
079:             * getClientIL method comment.
080:             *
081:             * @return                         The ClientIL value
082:             * @exception java.lang.Exception  Description of Exception
083:             */
084:            public org.jboss.mq.il.ClientIL getClientIL()
085:                    throws java.lang.Exception {
086:                return clientIL;
087:            }
088:
089:            /**
090:             * init method comment.
091:             *
092:             * @param connection               Description of Parameter
093:             * @param props                    Description of Parameter
094:             * @exception java.lang.Exception  Description of Exception
095:             */
096:            public void init(org.jboss.mq.Connection connection,
097:                    java.util.Properties props) throws java.lang.Exception {
098:                this .connection = connection;
099:                serverSocket = new ServerSocket(0);
100:
101:                String t = props
102:                        .getProperty(OILServerILFactory.OIL_TCPNODELAY_KEY);
103:                if (t != null)
104:                    enableTcpNoDelay = t.equals("yes");
105:
106:                clientIL = new OILClientIL(java.net.InetAddress.getLocalHost(),
107:                        serverSocket.getLocalPort(), enableTcpNoDelay);
108:
109:            }
110:
111:            /**
112:             * Main processing method for the OILClientILService object
113:             */
114:            public void run() {
115:                int code = 0;
116:                ObjectOutputStream out = null;
117:                ObjectInputStream in = null;
118:                socket = null;
119:                int serverPort = serverSocket.getLocalPort();
120:
121:                try {
122:                    if (cat.isDebugEnabled())
123:                        cat
124:                                .debug("Waiting for the server to connect to me on port "
125:                                        + serverSocket.getLocalPort());
126:
127:                    // We may close() before we get a connection so we need to
128:                    // periodicaly check to see if we were !running.
129:                    //
130:                    serverSocket.setSoTimeout(1000);
131:                    while (running && socket == null) {
132:                        try {
133:                            socket = serverSocket.accept();
134:                        } catch (java.io.InterruptedIOException e) {
135:                            // do nothing, running flag will be checked
136:                            continue;
137:                        } catch (IOException e) {
138:                            if (running)
139:                                connection
140:                                        .asynchFailure(
141:                                                "Error accepting connection from server in OILClientILService.",
142:                                                e);
143:                            return; // finally block will clean up!
144:                        }
145:                    }
146:
147:                    if (running) {
148:                        socket.setTcpNoDelay(enableTcpNoDelay);
149:                        socket.setSoTimeout(0);
150:                        out = new ObjectOutputStream(new BufferedOutputStream(
151:                                socket.getOutputStream()));
152:                        out.flush();
153:                        in = new ObjectInputStream(new BufferedInputStream(
154:                                socket.getInputStream()));
155:                    } else {
156:                        // not running so exit
157:                        // let the finally block do the clean up
158:                        //
159:                        return;
160:                    }
161:                } catch (IOException e) {
162:                    connection.asynchFailure(
163:                            "Could not initialize the OILClientIL Service.", e);
164:                    return;
165:                } finally {
166:                    try {
167:                        serverSocket.close();
168:                        serverSocket = null;
169:                    } catch (IOException e) {
170:                        if (cat.isDebugEnabled())
171:                            cat
172:                                    .debug(
173:                                            "run: an error occured closing the server socket",
174:                                            e);
175:                    }
176:                }
177:
178:                // now process request from the client.
179:                //
180:                while (running) {
181:                    try {
182:                        code = in.readByte();
183:                    } catch (java.io.InterruptedIOException e) {
184:                        continue;
185:                    } catch (IOException e) {
186:                        // Server has gone, bye, bye
187:                        break;
188:                    }
189:
190:                    try {
191:
192:                        switch (code) {
193:                        case OILConstants.RECEIVE:
194:                            int numReceives = in.readInt();
195:                            org.jboss.mq.ReceiveRequest[] messages = new org.jboss.mq.ReceiveRequest[numReceives];
196:                            for (int i = 0; i < numReceives; ++i) {
197:                                messages[i] = new ReceiveRequest();
198:                                messages[i].readExternal(in);
199:                            }
200:                            connection.asynchDeliver(messages);
201:                            break;
202:
203:                        case OILConstants.DELETE_TEMPORARY_DESTINATION:
204:                            connection
205:                                    .asynchDeleteTemporaryDestination((SpyDestination) in
206:                                            .readObject());
207:                            break;
208:
209:                        case OILConstants.CLOSE:
210:                            connection.asynchClose();
211:                            break;
212:
213:                        case OILConstants.PONG:
214:                            connection.asynchPong(in.readLong());
215:                            break;
216:
217:                        default:
218:                            throw new RemoteException("Bad method code !");
219:                        }
220:
221:                        //Everthing was OK
222:                        //
223:                        try {
224:                            out.writeByte(OILConstants.SUCCESS);
225:                            out.flush();
226:                        } catch (IOException e) {
227:                            connection
228:                                    .asynchFailure("Connection failure(1)", e);
229:                            break; // exit the loop
230:                        }
231:                    } catch (Exception e) {
232:                        if (!running) {
233:                            // if not running then don't bother to log an error
234:                            //
235:                            break;
236:                        }
237:
238:                        try {
239:                            cat.error("Exception handling server request", e);
240:                            out.writeByte(OILConstants.EXCEPTION);
241:                            out.writeObject(e);
242:                            out.reset();
243:                            out.flush();
244:                        } catch (IOException e2) {
245:                            connection.asynchFailure("Connection failure(2)",
246:                                    e2);
247:                            break;
248:                        }
249:                    }
250:                } // end while
251:
252:                // exited loop, so clean up the conection
253:                //
254:                try {
255:                    cat.debug("Closing receiver connections on port: "
256:                            + serverPort);
257:                    out.close();
258:                    in.close();
259:                    socket.close();
260:                    socket = null;
261:                } catch (IOException e) {
262:                    connection.asynchFailure("Connection failure", e);
263:                }
264:
265:                // ensure the flag is set correctly
266:                //
267:                running = false;
268:            }
269:
270:            /**
271:             * start method comment.
272:             *
273:             * @exception java.lang.Exception  Description of Exception
274:             */
275:            public void start() throws java.lang.Exception {
276:
277:                running = true;
278:                worker = new Thread(Connection.getThreadGroup(), this ,
279:                        "OILClientILService-" + threadNumber++);
280:                worker.setDaemon(true);
281:                worker.start();
282:
283:            }
284:
285:            /**
286:             * @exception java.lang.Exception  Description of Exception
287:             */
288:            public void stop() throws java.lang.Exception {
289:                cat.trace("Stop called on OILClientService");
290:                running = false;
291:                worker.interrupt();
292:            }
293:        }
294:        // vim:expandtab:tabstop=3:shiftwidth=3
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