private static Echo[] spawnAndTest() {

    System.err.println("\nCreate Test-->");

    Echo[] echo = new Echo[protocol.length];

    for (int i = 0; i < protocol.length; i++) {

      JavaVM serverVM =
          new JavaVM("EchoImpl", "-Djava.security.policy=" + TestParams.defaultPolicy, protocol[i]);

      System.err.println("\nusing protocol: " + (protocol[i] == "" ? "none" : protocol[i]));

      try {
        /* spawn VM for EchoServer */
        serverVM.start();

        /* lookup server */
        int tries = 12; // need enough tries for slow machine.
        echo[i] = null;
        do {
          try {
            echo[i] = (Echo) Naming.lookup("//:" + REGISTRY_PORT + "/EchoServer");
            break;
          } catch (NotBoundException e) {
            try {
              Thread.sleep(2000);
            } catch (Exception ignore) {
            }
            continue;
          }
        } while (--tries > 0);

        if (echo[i] == null) TestLibrary.bomb("server not bound in 12 tries", null);

        /* invoke remote method and print result*/
        System.err.println("Bound to " + echo[i]);
        byte[] data = ("Greetings, citizen " + System.getProperty("user.name") + "!").getBytes();
        byte[] result = echo[i].echoNot(data);
        for (int j = 0; j < result.length; j++) result[j] = (byte) ~result[j];
        System.err.println("Result: " + new String(result));
        echo[i].shutdown();

      } catch (Exception e) {
        TestLibrary.bomb("test failed", e);

      } finally {
        serverVM.destroy();
        try {
          Naming.unbind("//:" + REGISTRY_PORT + "/EchoServer");
        } catch (Exception e) {
          TestLibrary.bomb("unbinding EchoServer", e);
        }
      }
    }
    return echo;
  }
  private static void reactivateAndTest(Echo[] echo) {

    System.err.println("\nReactivate Test-->");

    for (int i = 0; i < echo.length; i++) {
      try {
        System.err.println("\nusing protocol: " + (protocol[i] == "" ? "none" : protocol[i]));
        byte[] data = ("Greetings, citizen " + System.getProperty("user.name") + "!").getBytes();
        byte[] result = echo[i].echoNot(data);
        for (int j = 0; j < result.length; j++) result[j] = (byte) ~result[j];
        System.err.println("Result: " + new String(result));
        echo[i].shutdown();
      } catch (Exception e) {
        TestLibrary.bomb("activating EchoServer for protocol " + protocol[i], e);
      }
    }
  }
Example #3
0
  /**
   * Contact a belief network context, get the helper list, and search the list to see if there's a
   * helper which matches the type sequence specified. If there's more than one helper which
   * matches, find the ``best fit.''
   *
   * <p>The class and count scores of the best-fitting helper class are written into
   * <tt>max_class_score[0]</tt> and <tt>max_count_score[0]</tt>, respectively.
   */
  public static Class find_helper_class0(
      Vector seq, String helper_type, int[] max_class_score, int[] max_count_score)
      throws ClassNotFoundException {
    long t0 = System.currentTimeMillis();
    if (bnc != null) // make sure the reference is still alive
    try {
        bnc.get_name();
      } catch (RemoteException e) {
        bnc = null;
      }

    if (bnc == null) // need to locate a context
    {
      String cb = System.getProperty("java.rmi.server.codebase", "http://localhost");
      long tt0 = System.currentTimeMillis();
      try {
        bnc = BeliefNetworkContext.locate_context(new URL(cb).getHost());
      } catch (Exception e) {
        throw new ClassNotFoundException("nested: " + e);
      }
    }

    String[] helperlist;
    try {
      helperlist = bnc.get_helper_names(helper_type);
    } catch (RemoteException e) {
      throw new ClassNotFoundException("bnc.get_helper_names failed");
    }

    int[] class_score1 = new int[1], count_score1 = new int[1];
    max_class_score[0] = -1;
    max_count_score[0] = -1;
    Class cmax_score = null;

    for (int i = 0; i < helperlist.length; i++) {
      try {
        Class c = RMIClassLoader.loadClass(helperlist[i]);
        SeqTriple[] sm = (SeqTriple[]) invoke_description(c);
        if (sm == null) continue; // apparently not a helper class
        if (MatchClassPattern.matches(sm, seq, class_score1, count_score1)) {
          if (class_score1[0] > max_class_score[0]
              || (class_score1[0] == max_class_score[0] && count_score1[0] > max_count_score[0])) {
            cmax_score = c;
            max_class_score[0] = class_score1[0];
            max_count_score[0] = count_score1[0];
          }
        }
      } catch (Exception e2) {
        System.err.println("PiHelperLoader: attempt to load " + helperlist[i] + " failed; " + e2);
      }
    }

    if (cmax_score == null) {
      System.err.println("find_helper_class0: failed; helper list:");
      for (int i = 0; i < helperlist.length; i++) System.err.println("\t" + helperlist[i]);

      String s = "";
      for (Enumeration e = seq.elements(); e.hasMoreElements(); ) {
        try {
          Class c = (Class) e.nextElement();
          s += c.getName() + ",";
        } catch (NoSuchElementException ee) {
          s += "???" + ",";
        }
      }

      throw new ClassNotFoundException("no " + helper_type + " helper for sequence [" + s + "]");
    }

    // FOR NOW IGNORE THE POSSIBILITY OF TWO OR MORE MATCHES !!!
    return cmax_score;
  }
Example #4
0
public class NotActivatableServerImpl extends UnicastRemoteObject
    implements NotActivatableInterface {

  private static final String PROG_NAME = "NotActivatableServerImpl";
  private static final String SERVER_OBJECT = "NotActivatableServer";
  private static final String CLASS_NAME = "activation.NotActivatableServerImpl";

  private static final String POLICY_FILE = "policy_file";

  private static final String USER_DIR = System.getProperty("user.dir").replace('\\', '/');

  private static final String CODE_LOCATION = "file:" + USER_DIR + "/";

  private static final MarshalledObject DATA = null;
  private static ActivationDesc ACTIVATION_DESC = null;

  public NotActivatableServerImpl() throws RemoteException {}

  public void ping() throws RemoteException {}

  public void exit() throws RemoteException {
    System.exit(0);
  }

  private static void setup() {

    try {

      NotActivatableInterface rsi; // Remote server interface

      System.setSecurityManager(new RMISecurityManager());

      rsi = (NotActivatableInterface) Activatable.register(ACTIVATION_DESC);
      System.out.println("Got stub for " + SERVER_OBJECT + " implementation");

      Naming.rebind(SERVER_OBJECT, rsi);
      System.out.println("Exported " + SERVER_OBJECT + " implementation");

    } catch (Exception e) {
      System.err.println("Exception: " + e);
      e.printStackTrace();
    }
  }

  public static void main(String[] args) {

    try {
      Properties props = new Properties();
      props.setProperty("java.security.policy", POLICY_FILE);

      ActivationGroupDesc agd = new ActivationGroupDesc(props, null);

      ActivationGroupID agid = ActivationGroup.getSystem().registerGroup(agd);

      ACTIVATION_DESC = new ActivationDesc(agid, CLASS_NAME, CODE_LOCATION, DATA, false);
    } catch (Exception e) {
      System.err.println("Exception: " + e);
      e.printStackTrace();
    }

    setup();
  }
}