1 /*
   2  * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  */
  26 import java.rmi.*;
  27 import java.rmi.activation.*;
  28 import java.rmi.server.*;
  29 import java.security.CodeSource;
  30 import java.net.URL;
  31 
  32 public class EchoImpl
  33     extends Activatable
  34     implements Echo, Runnable
  35 {
  36     private static final byte[] pattern = { (byte) 'A' };
  37 
  38     /**
  39      * Initialization constructor.
  40      */
  41     public EchoImpl(String protocol)
  42         throws ActivationException, RemoteException
  43     {
  44         super(null, makeMarshalledObject(protocol), false, 0,
  45               new MultiSocketFactory.ClientFactory(protocol, pattern),
  46               new MultiSocketFactory.ServerFactory(protocol, pattern));
  47     }
  48 
  49     /**
  50      * Activation constructor.
  51      */
  52     public EchoImpl(ActivationID id, MarshalledObject obj)
  53         throws RemoteException
  54     {
  55         super(id, 0,
  56               new MultiSocketFactory.ClientFactory(getProtocol(obj), pattern),
  57               new MultiSocketFactory.ServerFactory(getProtocol(obj), pattern));
  58     }
  59 
  60     private static MarshalledObject makeMarshalledObject(String protocol) {
  61         MarshalledObject obj = null;
  62         try {
  63             obj = new MarshalledObject(protocol);
  64         } catch (Exception willNotHappen) {
  65         }
  66 
  67         return obj;
  68     }
  69 
  70     private static String getProtocol(MarshalledObject obj) {
  71         String protocol = "";
  72         try {
  73             protocol = (String) obj.get();
  74         } catch (Exception willNotHappen) {
  75         }
  76 
  77         return protocol;
  78     }
  79 
  80     public byte[] echoNot(byte[] data) {
  81         byte[] result = new byte[data.length];
  82         for (int i = 0; i < data.length; i++)
  83             result[i] = (byte) ~data[i];
  84         return result;
  85     }
  86 
  87     /**
  88      * Spawns a thread to deactivate the object.
  89      */
  90     public void shutdown() throws Exception
  91     {
  92         (new Thread(this,"Echo.shutdown")).start();
  93     }
  94 
  95     /**
  96      * Thread to deactivate object. First attempts to make object
  97      * inactive (via the inactive method).  If that fails (the
  98      * object may still have pending/executing calls), then
  99      * unexport the object forcibly.
 100      */
 101     public void run()
 102     {
 103         ActivationLibrary.deactivate(this, getID());
 104     }
 105 
 106     public static void main(String[] args) {
 107         /*
 108          * The following line is required with the JDK 1.2 VM so that the
 109          * VM can exit gracefully when this test completes.  Otherwise, the
 110          * conservative garbage collector will find a handle to the server
 111          * object on the native stack and not clear the weak reference to
 112          * it in the RMI runtime's object table.
 113          */
 114         Object dummy = new Object();
 115 
 116         System.setSecurityManager(new RMISecurityManager());
 117 
 118         try {
 119             String protocol = "";
 120             if (args.length >= 1)
 121                 protocol = args[0];
 122 
 123             System.out.println("EchoServer: creating remote object");
 124             ActivationGroupDesc groupDesc =
 125                 new ActivationGroupDesc(null, null);
 126             ActivationSystem system = ActivationGroup.getSystem();
 127             ActivationGroupID groupID = system.registerGroup(groupDesc);
 128             ActivationGroup.createGroup(groupID, groupDesc, 0);
 129 
 130             EchoImpl impl = new EchoImpl(protocol);
 131             int registryPort = Integer.parseInt(System.getProperty("rmi.registry.port"));
 132             System.out.println("EchoServer: binding in registry on port:" + registryPort);
 133             Naming.rebind("//:" + registryPort +
 134                           "/EchoServer", impl);
 135             System.out.println("EchoServer ready.");
 136         } catch (Exception e) {
 137             System.err.println("EXCEPTION OCCURRED:");
 138             e.printStackTrace();
 139         }
 140     }
 141 }