Coverage Report - com.sun.grizzly.filter.UDPWriteFilter
 
Classes in this File Line Coverage Branch Coverage Complexity
UDPWriteFilter
0 %
0/32
0 %
0/6
2,5
 
 1  
 /*
 2  
  * 
 3  
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 4  
  * 
 5  
  * Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.
 6  
  * 
 7  
  * The contents of this file are subject to the terms of either the GNU
 8  
  * General Public License Version 2 only ("GPL") or the Common Development
 9  
  * and Distribution License("CDDL") (collectively, the "License").  You
 10  
  * may not use this file except in compliance with the License. You can obtain
 11  
  * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 12  
  * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 13  
  * language governing permissions and limitations under the License.
 14  
  * 
 15  
  * When distributing the software, include this License Header Notice in each
 16  
  * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 17  
  * Sun designates this particular file as subject to the "Classpath" exception
 18  
  * as provided by Sun in the GPL Version 2 section of the License file that
 19  
  * accompanied this code.  If applicable, add the following below the License
 20  
  * Header, with the fields enclosed by brackets [] replaced by your own
 21  
  * identifying information: "Portions Copyrighted [year]
 22  
  * [name of copyright owner]"
 23  
  * 
 24  
  * Contributor(s):
 25  
  * 
 26  
  * If you wish your version of this file to be governed by only the CDDL or
 27  
  * only the GPL Version 2, indicate your decision by adding "[Contributor]
 28  
  * elects to include this software in this distribution under the [CDDL or GPL
 29  
  * Version 2] license."  If you don't indicate a single choice of license, a
 30  
  * recipient has the option to distribute your version of this file under
 31  
  * either the CDDL, the GPL Version 2 or to extend the choice of license to
 32  
  * its licensees as provided above.  However, if you add GPL Version 2 code
 33  
  * and therefore, elected the GPL Version 2 license, then the option applies
 34  
  * only if the new code is made subject to such option by the copyright
 35  
  * holder.
 36  
  *
 37  
  */
 38  
 
 39  
 package com.sun.grizzly.filter;
 40  
 
 41  
 import com.sun.grizzly.Context;
 42  
 import com.sun.grizzly.Controller;
 43  
 import com.sun.grizzly.ProtocolFilter;
 44  
 import com.sun.grizzly.util.OutputWriter;
 45  
 import com.sun.grizzly.util.WorkerThread;
 46  
 import java.io.IOException;
 47  
 import java.net.SocketAddress;
 48  
 import java.nio.ByteBuffer;
 49  
 import java.nio.channels.DatagramChannel;
 50  
 import java.nio.channels.SelectionKey;
 51  
 import java.util.logging.Level;
 52  
 
 53  
 /**
 54  
  * Simple ProtocolFilter implementation which write the available bytes
 55  
  * and delegate the processing to the next ProtocolFilter in the ProtocolChain.
 56  
  * If no bytes are available for write, no new ProtocolHandler will be a invoked and 
 57  
  * the connection (SelectionKey) will be cancelled. 
 58  
  *
 59  
  * @author Jeanfrancois Arcand
 60  
  */
 61  
 public class UDPWriteFilter implements ProtocolFilter{    
 62  
     
 63  
     public final static String UDP_SOCKETADDRESS = "socketAddress";
 64  
     
 65  0
     public UDPWriteFilter(){
 66  0
     }
 67  
      
 68  
     
 69  
     /**
 70  
      * Write available bytes and delegate the processing of them to the next
 71  
      * ProtocolFilter in the ProtocolChain.
 72  
      * @return <tt>true</tt> if the next ProtocolFilter on the ProtocolChain
 73  
      *                       need to bve invoked.
 74  
      */
 75  
     public boolean execute(Context ctx) throws IOException {
 76  0
         boolean result = true;
 77  0
         SocketAddress socketAddress = null;
 78  0
         DatagramChannel datagramChannel = null;
 79  0
         Exception exception = null;
 80  0
         SelectionKey key = ctx.getSelectionKey();
 81  0
         key.attach(null);
 82  
         
 83  0
         ByteBuffer byteBuffer = 
 84  
                 ((WorkerThread)Thread.currentThread()).getByteBuffer();
 85  
         try {
 86  0
             socketAddress = (SocketAddress)ctx.getAttribute(UDP_SOCKETADDRESS);
 87  
             
 88  0
             if (socketAddress == null){
 89  0
                 throw new IllegalStateException("socketAddress cannot be null");
 90  
             }
 91  
             
 92  0
             datagramChannel = (DatagramChannel)key.channel();
 93  0
             OutputWriter.flushChannel(datagramChannel,socketAddress,byteBuffer);   
 94  0
         } catch (IOException ex) {
 95  0
             exception = ex;
 96  0
             log("UDPWriteFilter.execute",ex);
 97  0
         } catch (RuntimeException ex) {
 98  0
             exception = ex;    
 99  0
             log("UDPWriteFilter.execute",ex);
 100  
         } finally {                               
 101  0
             if (exception != null){
 102  0
                 ctx.setAttribute(Context.THROWABLE,exception);
 103  0
                 result = false;
 104  
             } else {
 105  0
                 ctx.setKeyRegistrationState(
 106  
                         Context.KeyRegistrationState.REGISTER);    
 107  
             } 
 108  0
         }       
 109  0
         return result;
 110  
     }
 111  
     
 112  
     
 113  
     /**
 114  
      * Re-enable the SelectionKey and make sure the ByteBuffer has been cleared.
 115  
      * @return <tt>true</tt> if the previous ProtocolFilter postExecute method
 116  
      *         needs to be invoked.
 117  
      */
 118  
     public boolean postExecute(Context ctx) throws IOException {
 119  0
         ctx.setKeyRegistrationState(Context.KeyRegistrationState.REGISTER);
 120  0
         ((WorkerThread)Thread.currentThread()).getByteBuffer().clear();
 121  0
         return true;
 122  
     }
 123  
     
 124  
     
 125  
     /**
 126  
      * Log a message/exception.
 127  
      * @param msg <code>String</code>
 128  
      * @param t <code>Throwable</code>
 129  
      */
 130  
     protected void log(String msg,Throwable t){
 131  0
         if (Controller.logger().isLoggable(Level.FINE)){
 132  0
             Controller.logger().log(Level.FINE,"Write,execute()",t);
 133  
         }
 134  0
     } 
 135  
 }