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Source code: gnu/classpath/tools/rmi/REGISTRY.java


1   /* REGISTY.java -- RMI registry starter.
2      Copyright (C) 2006 Free Software Foundation, Inc.
3   
4   This file is part of GNU Classpath.
5   
6   GNU Classpath is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10  
11  GNU Classpath is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  General Public License for more details.
15  
16  You should have received a copy of the GNU General Public License
17  along with GNU Classpath; see the file COPYING.  If not, write to the
18  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19  02110-1301 USA.
20  
21  Linking this library statically or dynamically with other modules is
22  making a combined work based on this library.  Thus, the terms and
23  conditions of the GNU General Public License cover the whole
24  combination.
25  
26  As a special exception, the copyright holders of this library give you
27  permission to link this library with independent modules to produce an
28  executable, regardless of the license terms of these independent
29  modules, and to copy and distribute the resulting executable under
30  terms of your choice, provided that you also meet, for each linked
31  independent module, the terms and conditions of the license of that
32  module.  An independent module is a module which is not derived from
33  or based on this library.  If you modify this library, you may extend
34  this exception to your version of the library, but you are not
35  obligated to do so.  If you do not wish to do so, delete this
36  exception statement from your version. */
37  
38  
39  package gnu.classpath.tools.rmi;
40  
41  import gnu.classpath.tools.HelpPrinter;
42  import gnu.classpath.tools.rmi.registry.RegistryImpl;
43  import gnu.java.rmi.server.UnicastServerRef;
44  
45  import java.io.File;
46  import java.rmi.NotBoundException;
47  import java.rmi.RemoteException;
48  import java.rmi.registry.LocateRegistry;
49  import java.rmi.registry.Registry;
50  import java.rmi.server.ObjID;
51  import java.rmi.server.RMIServerSocketFactory;
52  import java.util.Hashtable;
53  import java.util.Map;
54  
55  /**
56   * The optionally persistent RMI registry implementation.
57   * 
58   * @author Audrius Meskauskas (audriusa@bioinformatics.org)
59   */
60  public class REGISTRY
61  {
62    /**
63     * The stop command.
64     */
65    public static String STOP = "gnu.classpath.tools.rmi.registry.command.STOP";
66    
67    /**
68     * If true, the registry prints registration events to console.
69     */
70    public static boolean verbose = false;
71    
72    /**
73     * The RMI registry implementation entry point.
74     */
75    public static void main(String[] args)
76    {
77      String HelpPath = "rmi/REGISTRY.txt";
78      HelpPrinter.checkHelpKey(args, HelpPath);
79      
80      // Parse parameters:
81      String folder = ".";
82      boolean cold = false;
83      boolean trans = false;
84      boolean stop = false;
85  
86      int port = Registry.REGISTRY_PORT;
87      RMIServerSocketFactory ssf = null;
88  
89      for (int i = 0; i < args.length; i++)
90        {
91          String a = args[i];
92          if (a.equals("-restart"))
93            cold = true;
94          else if (a.equals("-transient"))
95            trans = true;
96          else if (a.equals("-verbose"))
97            verbose = true;
98          else if (a.equals("-stop"))          
99            stop = true;
100         else if (i < args.length - 1)
101           {
102             // The additional key parameter is possible.
103             if (a.equals("-port"))
104               port = Integer.parseInt(args[++i]);
105             else if (a.equals("-folder"))
106               folder = args[++i];
107           }
108       }
109 
110     if (!stop)
111       {
112         Map table;
113         if (trans)
114           table = new Hashtable();
115         else
116           {
117             // Start the system.
118             File dataFolder = new File(folder);
119             if (!dataFolder.exists())
120               dataFolder.mkdirs();
121             table = PersistentHashTable.createInstance(
122               new File(dataFolder, "rmiregistry.data"), cold);
123           }
124 
125         RegistryImpl system = new RegistryImpl(table);
126 
127         // We must export with the specific activation id that is only
128         // possible when going into the gnu.java.rmi
129         try
130           {
131             UnicastServerRef sref = new UnicastServerRef(
132               new ObjID(ObjID.REGISTRY_ID), port, ssf);
133 
134             sref.exportObject(system);
135             System.out.println("The RMI naming service is listening at " + port);
136           }
137         catch (Exception ex)
138           {
139             System.out.println("Failed to start RMI naming service at " + port);
140           }
141       }
142     else
143       {
144         // Stop the naming service.
145         try
146           {
147             Registry r = LocateRegistry.getRegistry(port);
148             // Search for this specific line will command to stop the registry.
149             
150             // Our service returns null, but any other service will thrown
151             // NotBoundException.
152             r.unbind(STOP);
153           }
154         catch (RemoteException e)
155           {
156             System.out.println("Failed to stop RMI naming service at " + port);
157           }
158         catch (NotBoundException e)
159         {
160             System.out.println("The naming service at port "+port+" is not a "+
161                                REGISTRY.class.getName());
162         }
163       }
164   }
165 }