rawpastregrtest.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.p2p.past.testing;

import rice.*;

import rice.environment.Environment;
import rice.p2p.commonapi.*;
import rice.p2p.commonapi.rawserialization.*;
import rice.p2p.commonapi.testing.*;
import rice.p2p.past.*;
import rice.p2p.past.messaging.*;
import rice.p2p.past.rawserialization.*;
import rice.p2p.replication.*;

import rice.persistence.*;

import java.io.*;
import java.util.*;
import java.net.*;
import java.io.Serializable;

/**
 * @(#) PastRegrTest.java Provides regression testing for the Past service
 *
 * @version $Id: PastRegrTest.java 3157 2006-03-19 12:16:58Z jeffh $
 * @author Alan Mislove
 */

public class RawPastRegrTest extends CommonAPITest {

  // the storage services in the ring
  /**
   * DESCRIBE THE FIELD
   */
  protected StorageManager storages[];

  // the past impls in the ring
  /**
   * DESCRIBE THE FIELD
   */
  protected PastImpl pasts[];

  /**
   * DESCRIBE THE FIELD
   */
  protected boolean running = true;

  // the instance name to use
  /**
   * DESCRIBE THE FIELD
   */
  public static String INSTANCE = "PastRegrTest";

  // the replication factor in Past
  /**
   * DESCRIBE THE FIELD
   */
  public static int REPLICATION_FACTOR = 3;

  /**
   * Constructor which sets up all local variables
   *
   * @param env DESCRIBE THE PARAMETER
   * @exception IOException DESCRIBE THE EXCEPTION
   */
  public RawPastRegrTest(Environment env) throws IOException {
    super(env);
    pasts = new PastImpl[NUM_NODES];
    storages = new StorageManager[NUM_NODES];

    if (PROTOCOL == PROTOCOL_DIRECT) {
        new Thread() {
          public void run() {
            while (running) {
              try {
                sleep(50);
                simulate();
              } catch (Exception e) {
                System.out.println(e + " blah");
              }
            }
          }
        }.start();
    }
  }

  /**
   * Method which should process the given newly-created node
   *
   * @param node The newly created node
   * @param num The number of this node
   */
  protected void processNode(int num, Node node) {
    try {
      storages[num] = new StorageManagerImpl(FACTORY,
        new PersistentStorage(FACTORY, "root-" + num, ".", 1000000, environment),
        new LRUCache(new MemoryStorage(FACTORY), 100000, environment));
      pasts[num] = new PastImpl(node, storages[num], REPLICATION_FACTOR, INSTANCE);
      pasts[num].setContentDeserializer(
        new PastContentDeserializer() {

          public PastContent deserializePastContent(InputBuffer buf, Endpoint endpoint,
                                                    short contentType) throws IOException {
            switch (contentType) {
              case TestPastContent.TYPE:
                return new TestPastContent(buf, endpoint, this);
              case VersionedTestPastContent.TYPE:
                return new VersionedTestPastContent(buf, endpoint, this);
            }
            throw new IllegalArgumentException("Unknown type:" + contentType);
          }
        });
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
    pasts[num].setContentHandleDeserializer(
      new PastContentHandleDeserializer() {
        public PastContentHandle deserializePastContentHandle(InputBuffer buf, Endpoint endpoint,
                                                              short contentType) throws IOException {
          switch (contentType) {
            case TestPastContentHandle.TYPE:
              return new TestPastContentHandle(buf, endpoint);
          }
          throw new IllegalArgumentException("Unknown type:" + contentType);
        }
      });
  }

  /**
   * Method which should run the test - this is called once all of the nodes
   * have been created and are ready.
   */
  protected void runTest() {
    if (NUM_NODES < 2) {
      System.out.println("The DistPastRegrTest must be run with at least 2 nodes for proper testing.  Use the '-nodes n' to specify the number of nodes.");
      return;
    }

    // Run each test
    testRouteRequest();
  }

  /*
   *  ---------- Test methods and classes ----------
   */
  /**
   * Tests routing a Past request to a particular node.
   */
  protected void testRouteRequest() {
    final PastImpl local = pasts[environment.getRandomSource().nextInt(NUM_NODES)];
    final PastImpl remote = pasts[environment.getRandomSource().nextInt(NUM_NODES)];
    final Id remoteId = remote.getLocalNodeHandle().getId();
    final PastContent file = new TestPastContent(remoteId);

    sectionStart("Simple Route Request");

    // Check file doesn't exist
    stepStart("Initial Lookup");
    local.lookup(remoteId,
      new TestCommand() {
        public void receive(Object result) throws Exception {
          assertTrue("File returned should be null", result == null);
          stepDone();

          // Insert file
          stepStart("File Insertion");
          local.insert(file,
            new TestCommand() {
              public void receive(Object result) throws Exception {
                assertTrue("Insert of file result should not be null", result != null);
                assertTrue("Insert of file should return Boolean[]", result instanceof Boolean[]);
                //     assertTrue("Insert of file should return correct sized Boolean[]", (((Boolean[]) result).length == REPLICATION_FACTOR) ||
                //               ((NUM_NODES < REPLICATION_FACTOR) &&
                //                (((Boolean[]) result).length) == NUM_NODES));

                for (int i = 0; i < ((Boolean[]) result).length; i++) {
                  assertTrue("Insert of file should not return null at replica", ((Boolean[]) result)[i] != null);
                  assertTrue("Insert of file should succeed at replica", ((Boolean[]) result)[i].booleanValue());
                }

                stepDone();

                // run replica maintenance
                runReplicaMaintence();

                // Check file exists
                stepStart("Remote File Lookup");
                local.lookup(remoteId,
                  new TestCommand() {
                    public void receive(Object result) throws Exception {
                      assertTrue("File should not be null", result != null);
                      assertEquals("Lookup of file should be correct",
                        file,
                        result);
                      stepDone();

                      // Lookup file locally
                      stepStart("Local File Lookup");
                      remote.getStorageManager().getObject(remoteId,
                        new TestCommand() {
                          public void receive(Object result) throws Exception {
                            assertTrue("File should be inserted at known node",
                              result != null);
                            assertEquals("Retrieved local file should be the same",
                              file, result);

                            stepDone();
                            sectionDone();

                            testVersionControl();
                          }
                        });
                      simulate();
                    }
                  });
                simulate();
              }
            });
          simulate();
        }
      });
    simulate();
  }

  /**
   * Tests overwriting an exiting object with a new one
   */
  protected void testVersionControl() {
    final PastImpl local = pasts[environment.getRandomSource().nextInt(NUM_NODES)];
    final PastImpl remote = pasts[environment.getRandomSource().nextInt(NUM_NODES)];
    final Id remoteId = remote.getLocalNodeHandle().getId();
    final PastContent oldFile = new VersionedTestPastContent(remoteId, 0);
    final PastContent newFile = new VersionedTestPastContent(remoteId, 1);
    final PastContent newNewFile = new NonOverwritingTestPastContent(remoteId, 2);

    sectionStart("Version Control");

    // Insert file
    stepStart("File Insertion");
    local.insert(oldFile,
      new TestCommand() {
        public void receive(Object result) throws Exception {
          assertTrue("Insert of file result should not be null", result != null);
          assertTrue("Insert of file should return Boolean[]", result instanceof Boolean[]);
          //   assertTrue("Insert of file should return correct sized Boolean[]", (((Boolean[]) result).length == REPLICATION_FACTOR) ||
          //              ((NUM_NODES < REPLICATION_FACTOR) &&
          //               (((Boolean[]) result).length) == NUM_NODES));

          for (int i = 0; i < ((Boolean[]) result).length; i++) {
            assertTrue("Insert of file should not return null at replica", ((Boolean[]) result)[i] != null);
            assertTrue("Insert of file should succeed at replica", ((Boolean[]) result)[i].booleanValue());
          }

          stepDone();

          // run replica maintenance
          runReplicaMaintence();

          // Check file exists
          stepStart("Remote File Lookup");
          local.lookup(remoteId,
            new TestCommand() {
              public void receive(Object result) throws Exception {
                assertTrue("File should not be null", result != null);
                assertEquals("Lookup of file should be correct",
                  oldFile,
                  result);
                stepDone();

                // Insert overwriting file
                stepStart("Overwriting File Insertion");
                local.insert(newFile,
                  new TestCommand() {
                    public void receive(Object result) throws Exception {
                      assertTrue("Insert of file result should not be null", result != null);
                      assertTrue("Insert of file should return Boolean[]", result instanceof Boolean[]);
                      //      assertTrue("Insert of file should return correct sized Boolean[]", (((Boolean[]) result).length == REPLICATION_FACTOR) ||
                      //                 ((NUM_NODES < REPLICATION_FACTOR) &&
                      //                  (((Boolean[]) result).length) == NUM_NODES));

                      for (int i = 0; i < ((Boolean[]) result).length; i++) {
                        assertTrue("Insert of file should not return null at replica", ((Boolean[]) result)[i] != null);
                        assertTrue("Insert of file should succeed at replica", ((Boolean[]) result)[i].booleanValue());
                      }

                      stepDone();

                      // run replica maintenance
                      runReplicaMaintence();

                      // Check correct file exists
                      stepStart("Remote Overwriting File Lookup");
                      local.lookup(remoteId,
                        new TestCommand() {
                          public void receive(Object result) throws Exception {
                            assertTrue("Overwriting file should not be null", result != null);
                            assertEquals("Lookup of overwriting file should be correct version",
                              newFile,
                              result);
                            stepDone();

                            // Insert overwriting file
                            stepStart("Non-overwriting File Insertion");
                            local.insert(newNewFile,
                              new TestCommand() {
                                public void receive(Object result) throws Exception {
                                  assertTrue("Insert of file result should not be null", result != null);
                                  assertTrue("Insert of file should return Boolean[]", result instanceof Boolean[]);
                                  //      assertTrue("Insert of file should return correct sized Boolean[]", (((Boolean[]) result).length == REPLICATION_FACTOR) ||
                                  //                 ((NUM_NODES < REPLICATION_FACTOR) &&
                                  //                   (((Boolean[]) result).length) == NUM_NODES));

                                  for (int i = 0; i < ((Boolean[]) result).length; i++) {
                                    assertTrue("Insert of file should not return null at replica", ((Boolean[]) result)[i] != null);
                                    assertTrue("Insert of file should succeed at replica", ((Boolean[]) result)[i].booleanValue());
                                  }