directpastrypingtest.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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- Redistributions of source code must retain the above copyright
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- Redistributions in binary form must reproduce the above copyright
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- Neither  the name  of Rice  University (RICE) nor  the names  of its
contributors may be  used to endorse or promote  products derived from
this software without specific prior written permission.

This software is provided by RICE and the contributors on an "as is"
basis, without any representations or warranties of any kind, express
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********************************************************************************/
package rice.pastry.testing;

import rice.environment.Environment;
import rice.environment.params.simple.SimpleParameters;
import rice.environment.time.simulated.DirectTimeSource;
import rice.pastry.*;
import rice.pastry.direct.*;
import rice.pastry.standard.*;
import rice.pastry.join.*;

import java.util.*;
import java.io.*;
import java.lang.*;

/**
 * DirectPastryPingTest A performance test suite for pastry.
 *
 * @version $Id: DirectPastryPingTest.java 3038 2006-02-07 10:01:01Z jeffh $
 * @author Rongmei Zhang
 */

public class DirectPastryPingTest {

  /**
   * Constructor for DirectPastryPingTest.
   */
  public DirectPastryPingTest() {
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @param in DESCRIBE THE PARAMETER
   * @param environment DESCRIBE THE PARAMETER
   * @return DESCRIBE THE RETURN VALUE
   */
  private static boolean parseInput(String in, Environment environment) {
    StringTokenizer tokened = new StringTokenizer(in);
    if (!tokened.hasMoreTokens()) {
      return false;
    }

    String token = tokened.nextToken();
    int n = -1;
    int k = -1;
    SinglePingTest spt;
    int i;

    if (token.startsWith("q")) {
      //quit
      return true;
    } else if (token.startsWith("s")) {
      //standalone
      Vector trlist = new Vector();

      //	    k = 200000;

      for (i = 0; i < 8; i++) {
        n = k = (i + 1) * 1000;
        PingTestRecord tr = new PingTestRecord(n, k, environment.getParameters().getInt("pastry_rtBaseBitLength"));
        spt = new SinglePingTest(tr, environment);
        spt.test();
        System.out.println(tr.getNodeNumber() + "\t" + tr.getAveHops() + "\t"
          + tr.getAveDistance());
        //		System.out.println( "probability of " + i + " hops: " +
        // tr.getProbability()[i] );
      }
      /*
       *  for( i=0; i <10; i++ ){ trlist.addElement( new PingTestRecord(
       *  (i+1)*10000, k ) ); spt = new SinglePingTest(
       *  (PingTestRecord)(trlist.lastElement()) ); spt.test(); PingTestRecord tr =
       *  (PingTestRecord)trlist.elementAt(i); System.out.println(
       *  tr.getNodeNumber() + "\t" + tr.getAveHops() +"\t"+ tr.getAveDistance() );
       *  System.out.println( "probability of " + i + " hops: " +
       *  tr.getProbability()[i] ); }
       */
    }
    return false;
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @param args DESCRIBE THE PARAMETER
   * @exception IOException DESCRIBE THE EXCEPTION
   */
  public static void main(String args[]) throws IOException {
    boolean quit = false;
    Environment env = Environment.directEnvironment();
    BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
    String command = null;

    System.out.println("Usage: s - run standalone test");
    System.out.println("       q - quit");

    while (!quit) {
      try {
        command = input.readLine();
      } catch (Exception e) {
        System.out.println(e);
      }
      quit = parseInput(command, env);
    }

  }
}