directpastryregrtest.java

pastry的java实现的2.0b版

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

"FreePastry" Peer-to-Peer Application Development Substrate 

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********************************************************************************/
package rice.pastry.testing;

import rice.environment.Environment;
import rice.pastry.*;
import rice.pastry.direct.*;
import rice.pastry.standard.*;

import java.io.IOException;
import java.util.*;

/**
 * PastryRegrTest a regression test suite for pastry.
 *
 * @version $Id: DirectPastryRegrTest.java 3274 2006-05-15 16:17:47Z jeffh $
 * @author andrew ladd
 * @author peter druschel
 * @author sitaram iyer
 */

public class DirectPastryRegrTest extends PastryRegrTest {
  private NetworkSimulator simulator;

  /**
   * constructor
   *
   * @exception IOException DESCRIBE THE EXCEPTION
   */
  private DirectPastryRegrTest() throws IOException {
    super(Environment.directEnvironment());
    simulator = new SphereNetwork(environment);
    factory = new DirectPastryNodeFactory(new RandomNodeIdFactory(environment),
      simulator,
      environment);
  }

  /**
   * Get pastryNodes.last() to bootstrap with, or return null.
   *
   * @param firstNode DESCRIBE THE PARAMETER
   * @return The Bootstrap value
   */
  protected NodeHandle getBootstrap(boolean firstNode) {
    NodeHandle bootstrap = null;
    try {
      PastryNode lastnode = (PastryNode) pastryNodes.lastElement();
      bootstrap = lastnode.getLocalHandle();
    } catch (NoSuchElementException e) {
    }
    return bootstrap;
  }

  /**
   * get authoritative information about liveness of node.
   *
   * @param nh DESCRIBE THE PARAMETER
   * @return The ReallyAlive value
   */
  protected boolean isReallyAlive(NodeHandle nh) {
    return simulator.isAlive((DirectNodeHandle) nh);
  }

  /**
   * wire protocol specific handling of the application object e.g., RMI may
   * launch a new thread
   *
   * @param pn pastry node
   * @param app newly created application
   */
  protected void registerapp(PastryNode pn, RegrTestApp app) {
  }

  /**
   * send one simulated message
   *
   * @return DESCRIBE THE RETURN VALUE
   */
  protected boolean simulate() {
    try {
      Thread.sleep(300);
    } catch (InterruptedException ie) {
    }
    return false;
//    boolean res = simulator.simulate();
//    if (res)
//      msgCount++;
//    return res;
  }

  // do nothing in the simulated world
  /**
   * DESCRIBE THE METHOD
   *
   * @param ms DESCRIBE THE PARAMETER
   */
  public void pause(int ms) {
  }

  /**
   * murder the node. comprehensively.
   *
   * @param pn DESCRIBE THE PARAMETER
   */
  protected void killNode(PastryNode pn) {
    pn.destroy();
//    NetworkSimulator enet = (NetworkSimulator) simulator;
//    enet.setAlive(pn.getNodeId(), false);
  }

  /**
   * main. just create the object and call PastryNode's main.
   *
   * @param args DESCRIBE THE PARAMETER
   * @exception IOException DESCRIBE THE EXCEPTION
   */
  public static void main(String args[]) throws IOException {
    DirectPastryRegrTest pt = new DirectPastryRegrTest();
    mainfunc(pt, args, 500
    /*
     *  n
     */
      , 100
    /*
     *  d
     */
      , 10
    /*
     *  k
     */
      , 100
    /*
     *  m
     */
      , 1
    /*
     *  conc
     */
      );
  }
}