glacierpersistentstoragetest.java

pastry的java实现的2.0b版

/*************************************************************************

"FreePastry" Peer-to-Peer Application Development Substrate 

Copyright 2002, Rice University. All rights reserved.

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package rice.persistence.testing;

/*
 *  @(#) PersistentStorageTest.java
 *
 *  @author Ansley Post
 *  @author Alan Mislove
 *
 *  @version $Id: GlacierPersistentStorageTest.java 2324 2005-03-14 23:00:27Z amislove $
 */
import java.io.*;
import java.util.*;
import java.util.zip.*;

import rice.*;
import rice.p2p.commonapi.*;
import rice.p2p.glacier.*;
import rice.p2p.glacier.v2.*;
import rice.p2p.util.*;
import rice.pastry.commonapi.*;
import rice.persistence.*;

/**
 * This class is a class which tests the PersistentStorage class in the
 * rice.persistence package.
 *
 * @version $Id: pretty.settings 2305 2005-03-11 20:22:33Z jeffh $
 * @author jeffh
 */
public class GlacierPersistentStorageTest {

  File root;

  /**
   * Builds a MemoryStorageTest
   *
   * @param root DESCRIBE THE PARAMETER
   * @exception IOException DESCRIBE THE EXCEPTION
   */
  public GlacierPersistentStorageTest(String root) throws IOException {
    this.root = new File("FreePastry-Storage-Root/" + root);
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  public void start() throws Exception {
    process(root);
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @param file DESCRIBE THE PARAMETER
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  protected void process(File file) throws Exception {
    File[] files = file.listFiles();

    for (int i = 0; i < files.length; i++) {
      /*
       *  check each file and recurse into subdirectories
       */
      if (files[i].isFile() && (files[i].getName().length() > 20)) {
        ObjectInputStream objin = new XMLObjectInputStream(new BufferedInputStream(new GZIPInputStream(new FileInputStream(files[i]))));
        objin.readObject();

        Object o = objin.readObject();
        if (o instanceof FragmentAndManifest) {
          FragmentAndManifest fm = (FragmentAndManifest) o;

          int total = fm.fragment.payload.length + 24;

          total += fm.manifest.getObjectHash().length + fm.manifest.getSignature().length;
          total += fm.manifest.getFragmentHashes().length * fm.manifest.getFragmentHashes()[0].length;
          System.out.println(files[i].getName() + "\t" + total + "\t" + files[i].length());
        } else {
          System.out.println("ERROR: Found class " + o.getClass().getName());
        }
        objin.close();

      } else if (files[i].isDirectory()) {
        process(files[i]);
      }
    }
  }

  /**
   * The main program for the GlacierPersistentStorageTest class
   *
   * @param args The command line arguments
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  public static void main(String[] args) throws Exception {
    GlacierPersistentStorageTest test = new GlacierPersistentStorageTest("sys08.cs.rice.edu-10001-glacier-immutable");

    test.start();
  }
}