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

"FreePastry" Peer-to-Peer Application Development Substrate 

Copyright 2002, Rice University. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.

- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.

- 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
or implied including, but not limited to, representations or
warranties of non-infringement, merchantability or fitness for a
particular purpose. In no event shall RICE or contributors be liable
for any direct, indirect, incidental, special, exemplary, or
consequential damages (including, but not limited to, procurement of
substitute goods or services; loss of use, data, or profits; or
business interruption) however caused and on any theory of liability,
whether in contract, strict liability, or tort (including negligence
or otherwise) arising in any way out of the use of this software, even
if advised of the possibility of such damage.

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

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

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

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

public class SinglePingTest {
  private DirectPastryNodeFactory factory;

  private NetworkSimulator simulator;

  private TestRecord testRecord;

  private Vector pastryNodes;

  private Vector pingClients;

  private Environment environment;

  /**
   * Constructor for SinglePingTest.
   *
   * @param tr DESCRIBE THE PARAMETER
   * @param env DESCRIBE THE PARAMETER
   */
  public SinglePingTest(TestRecord tr, Environment env) {
    environment = env;
    simulator = new EuclideanNetwork(env);
    //SphereNetwork();
    factory = new DirectPastryNodeFactory(new RandomNodeIdFactory(environment), simulator, env);
    simulator.setTestRecord(tr);
    testRecord = tr;

    pastryNodes = new Vector();
    pingClients = new Vector();
  }

  /**
   * Gets the Bootstrap attribute of the SinglePingTest object
   *
   * @return The Bootstrap value
   */
  private NodeHandle getBootstrap() {
    NodeHandle bootstrap = null;
    try {
      PastryNode lastnode = (PastryNode) pastryNodes.lastElement();
      bootstrap = lastnode.getLocalHandle();
    } catch (NoSuchElementException e) {
    }
    return bootstrap;
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @return DESCRIBE THE RETURN VALUE
   */
  public PastryNode makePastryNode() {
    PastryNode pn = factory.newNode(getBootstrap());
    pastryNodes.addElement(pn);

    Ping pc = new Ping(pn);
    pingClients.addElement(pc);

    long start = System.currentTimeMillis();
    synchronized (pn) {
      while (!pn.isReady()) {
        try {
          pn.wait(300);
//          if (!pn.isReady()){
//            System.out.println("Still waiting for "+pn+ " to be ready.");
//          }
        } catch (InterruptedException ie) {
        }
      }
    }
    long now = System.currentTimeMillis();
    if (now - start > 2000) {
      System.out.println("Took " + (now - start) + " to create node " + pn);
    }

    return pn;
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @param k DESCRIBE THE PARAMETER
   */
  public void sendPings(int k) {
    int n = pingClients.size();

    for (int i = 0; i < k; i++) {
      int from = environment.getRandomSource().nextInt(n);
      int to = environment.getRandomSource().nextInt(n);

      Ping pc = (Ping) pingClients.get(from);
      PastryNode pn = (PastryNode) pastryNodes.get(to);

      pc.sendPing(pn.getNodeId());
      while (simulate()) {
        ;
      }
    }
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @return DESCRIBE THE RETURN VALUE
   */
  public boolean simulate() {
    return false;
//    return simulator.simulate();
  }

  /**
   * DESCRIBE THE METHOD
   */
  public void checkRoutingTable() {
    int i;
    Date prev = new Date();

    for (i = 0; i < testRecord.getNodeNumber(); i++) {
      PastryNode pn = makePastryNode();
      while (simulate()) {
        ;
      }
      System.out.println(pn.getLeafSet());

      if (i != 0 && i % 1000 == 0) {
        System.out.println(i + " nodes constructed");
      }
    }
    System.out.println(i + " nodes constructed");

    Date curr = new Date();
    long msec = curr.getTime() - prev.getTime();
    System.out.println("time used " + (msec / 60000) + ":"
      + ((msec % 60000) / 1000) + ":" + ((msec % 60000) % 1000));

    //	simulator.checkRoutingTable();
  }

  /**
   * A unit test for JUnit
   */
  public void test() {
    int i;
    Date prev = new Date();

    System.out.println("-------------------------");
    for (i = 0; i < testRecord.getNodeNumber(); i++) {
      PastryNode pn = makePastryNode();
      while (simulate()) {
        ;
      }
//      System.out.println(pn.getLeafSet());

      if (i != 0 && i % 500 == 0) {
        System.out.println(i + " nodes constructed");
      }
    }
    System.out.println(i + " nodes constructed");

    Date curr = new Date();
    long msec = curr.getTime() - prev.getTime();
    System.out.println("time used " + (msec / 60000) + ":"
      + ((msec % 60000) / 1000) + ":" + ((msec % 60000) % 1000));
    prev = curr;

    sendPings(testRecord.getTestNumber());
    System.out.println(testRecord.getTestNumber() + " lookups done");

    curr = new Date();
    msec = curr.getTime() - prev.getTime();
    System.out.println("time used " + (msec / 60000) + ":"
      + ((msec % 60000) / 1000) + ":" + ((msec % 60000) % 1000));

    testRecord.doneTest();
  }
}

