distpasttest.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 in binary form must reproduce the above copyright
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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
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********************************************************************************/
/*
 *  Created on Jun 24, 2005
 *
 *  TODO To change the template for this generated file go to
 *  Window - Preferences - Java - Code Style - Code Templates
 */
package rice.p2p.past.testing;

import java.io.Serializable;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.Iterator;

import rice.Continuation;
import rice.environment.Environment;
import rice.p2p.commonapi.Id;
import rice.p2p.commonapi.IdFactory;
import rice.p2p.commonapi.NodeHandle;
import rice.p2p.past.ContentHashPastContent;
import rice.p2p.past.Past;
import rice.p2p.past.PastContent;
import rice.p2p.past.PastContentHandle;
import rice.p2p.past.PastException;
import rice.p2p.past.PastImpl;
import rice.pastry.NodeIdFactory;
import rice.pastry.PastryNode;
import rice.pastry.PastryNodeFactory;
import rice.pastry.commonapi.PastryIdFactory;
import rice.pastry.leafset.LeafSet;
import rice.pastry.socket.SocketPastryNodeFactory;
import rice.pastry.standard.RandomNodeIdFactory;
import rice.persistence.LRUCache;
import rice.persistence.MemoryStorage;
import rice.persistence.PersistentStorage;
import rice.persistence.Storage;
import rice.persistence.StorageManagerImpl;

/**
 * @version $Id: pretty.settings 2305 2005-03-11 20:22:33Z jeffh $
 * @author jstewart TODO To change the template for this generated type comment
 *      go to Window - Preferences - Java - Code Style - Code Templates
 */
public class DistPastTest {

  /**
   * Constructor for DistPastTest.
   *
   * @param bindport DESCRIBE THE PARAMETER
   * @param bootaddress DESCRIBE THE PARAMETER
   * @param env DESCRIBE THE PARAMETER
   * @param numNodes DESCRIBE THE PARAMETER
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  public DistPastTest(int bindport, InetSocketAddress bootaddress, Environment env, int numNodes) throws Exception {

    // Generate the NodeIds Randomly
    NodeIdFactory nidFactory = new RandomNodeIdFactory(env);
    Past p = null;
    Storage stor = null;

    // used for generating PastContent object Ids.
    // this implements the "hash function" for our DHT
    PastryIdFactory idf = new rice.pastry.commonapi.PastryIdFactory(env);

    // construct the PastryNodeFactory, this is how we use rice.pastry.socket
    PastryNodeFactory factory = new SocketPastryNodeFactory(nidFactory, bindport, env);

    // loop to construct the nodes/apps
    for (int curNode = 0; curNode < numNodes; curNode++) {
      // This will return null if we there is no node at that location
      NodeHandle bootHandle = ((SocketPastryNodeFactory) factory).getNodeHandle(bootaddress);

      // construct a node, passing the null boothandle on the first loop will cause the node to start its own ring
      PastryNode node = factory.newNode((rice.pastry.NodeHandle) bootHandle);

      // the node may require sending several messages to fully boot into the ring
      while (!node.isReady()) {
        // delay so we don't busy-wait
        Thread.sleep(100);
      }

      System.out.println("Finished creating new node " + node);

      stor = new PersistentStorage(idf, ".", 4 * 1024 * 1024, node.getEnvironment());
      p = new PastImpl(node, new StorageManagerImpl(idf, stor, new LRUCache(new MemoryStorage(idf), 512 * 1024, node.getEnvironment())), 3, "");
    }
    Thread.sleep(5000);

    String s = "test" + env.getRandomSource().nextInt();
    PastContent dptc = new DistPastTestContent(env, idf, s);
    System.out.println("Inserting " + dptc);
    p.insert(dptc,
      new Continuation() {
        public void receiveResult(Object result) {
          Boolean[] results = ((Boolean[]) result);
          for (int ctr = 0; ctr < results.length; ctr++) {
            System.out.println("got " + results[ctr].booleanValue());
          }

//          System.out.println("got: "+result);
//          System.out.println(result.getClass().getName());
        }

        public void receiveException(Exception result) {
          result.printStackTrace();
        }
      });

    Thread.sleep(5000);

    p.lookup(dptc.getId(),
      new Continuation() {
        public void receiveResult(Object result) {
          System.out.println("Got a " + result);
        }

        public void receiveException(Exception result) {
          result.printStackTrace();
        }
      });
  }

  /**
   * Usage: java [-cp FreePastry-<version>.jar]
   * rice.tutorial.lesson4.DistTutorial localbindport bootIP bootPort numNodes
   * example java rice.tutorial.DistTutorial 9001 pokey.cs.almamater.edu 9001 10
   *
   * @param args The command line arguments
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  public static void main(String[] args) throws Exception {
    // Loads pastry settings
    Environment env = new Environment();

    try {
      // the port to use locally
      int bindport = Integer.parseInt(args[0]);

      // build the bootaddress from the command line args
      InetAddress bootaddr = InetAddress.getByName(args[1]);
      int bootport = Integer.parseInt(args[2]);
      InetSocketAddress bootaddress = new InetSocketAddress(bootaddr, bootport);

      // the port to use locally
      int numNodes = Integer.parseInt(args[3]);

      // launch our node!
      DistPastTest dt = new DistPastTest(bindport, bootaddress, env, numNodes);
    } catch (Exception e) {
      // remind user how to use
      System.out.println("Usage:");
      System.out.println("java [-cp FreePastry-<version>.jar] rice.tutorial.lesson4.DistTutorial localbindport bootIP bootPort numNodes");
      System.out.println("example java rice.tutorial.DistTutorial 9001 pokey.cs.almamater.edu 9001 10");
      throw e;
    }
  }
}