BufferLogInspector


1   /*
2    * Jalisto - JAva LIght STOrage
3    * Copyright (C) 2000-2005 Xcalia http://www.xcalia.com
4    * 
5    * This library is free software; you can redistribute it and/or
6    * modify it under the terms of the GNU Lesser General Public
7    * License as published by the Free Software Foundation; either
8    * version 2.1 of the License, or (at your option) any later version.
9    * 
10   * This library is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   * Lesser General Public License for more details.
14   * 
15   * You should have received a copy of the GNU Lesser General Public
16   * License along with this library; if not, write to the Free Software
17   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
18   * 
19   * Xcalia
20   * 71, rue Desnouettes
21   * 75014 Paris - France
22   * http://www.xcalia.com
23   */
24  package org.objectweb.jalisto.se.storage.raf.log.backup;
25  
26  import org.objectweb.jalisto.se.api.internal.Constants;
27  import org.objectweb.jalisto.se.api.JalistoProperties;
28  import org.objectweb.jalisto.se.impl.JalistoPropertiesImpl;
29  
30  import java.io.PrintWriter  ;
31  import java.io.RandomAccessFile  ;
32  
33  public class BufferLogInspector {
34      public void inspectRecordsFile(PrintWriter   out, RandomAccessFile   raf, long at)
35              throws Exception   {
36  
37          raf.seek(at);
38  
39          while (raf.getFilePointer() < raf.length()) {
40              Object   readObject = LogObject.readFrom(raf);
41              System.out.println(String.valueOf(readObject));
42          }
43      }
44  
45      public static void main(String  [] args) {
46          try {
47              JalistoProperties prop;
48              if (args.length < 1) {
49                  prop = new JalistoPropertiesImpl("");
50              } else {
51                  prop = new JalistoPropertiesImpl(args[0]);
52              }
53  
54              long at = 0;
55              if (args.length > 1) {
56                  at = Long.parseLong(args[1]);
57              }
58  
59              RandomAccessFile   raf = new RandomAccessFile  (prop.getDbFileFullName() + Constants.LOG_POSTFIX, "r");
60              PrintWriter   out = new PrintWriter  (System.out);
61              (new BufferLogInspector()).inspectRecordsFile(out, raf, at);
62              out.flush();
63          } catch (Exception   e) {
64              e.printStackTrace();
65          }
66      }
67  }
68
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