Package com.arjuna.mwlabs.wsc.model.twophase

Source Code of com.arjuna.mwlabs.wsc.model.twophase.RegistrarImple

/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a full listing
* of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA  02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* Copyright (C) 2002,
*
* Arjuna Technologies Limited,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: RegistrarImple.java,v 1.10.4.1 2005/11/22 10:34:16 kconner Exp $
*/

package com.arjuna.mwlabs.wsc.model.twophase;

import com.arjuna.mw.wscf.logging.wscfLogger;

import com.arjuna.ats.arjuna.common.Uid;

import com.arjuna.mw.wsas.activity.*;

import com.arjuna.webservices.wsaddr.AttributedURIType;
import com.arjuna.webservices.wsaddr.EndpointReferenceType;
import com.arjuna.webservices.wsarj.InstanceIdentifier;
import com.arjuna.wsc.Registrar;
import com.arjuna.wsc.AlreadyRegisteredException;
import com.arjuna.wsc.InvalidProtocolException;
import com.arjuna.wsc.InvalidStateException;
import com.arjuna.wsc.NoActivityException;
import com.arjuna.wsc.RegistrarMapper;

import com.arjuna.mwlabs.wsc.model.twophase.participants.*;

import com.arjuna.mw.wscf.model.twophase.CoordinatorManagerFactory;
import com.arjuna.mw.wscf.model.twophase.api.CoordinatorManager;

import java.util.HashMap;

public class RegistrarImple implements Registrar
{

  public RegistrarImple ()
  {
    try
    {
      _coordManager = CoordinatorManagerFactory.coordinatorManager();

      final RegistrarMapper mapper = RegistrarMapper.getFactory() ;

      mapper.addRegistrar(_2PCProtocolId, this);
      mapper.addRegistrar(_synchProtocolId, this);
    }
    catch (Exception ex)
    {
      ex.printStackTrace();
    }

    _coordinatorAddress = new EndpointReferenceType(new AttributedURIType(
        System.getProperty(TWO_PHASE_DEPLOYMENT_URL)));
  }

  /**
   * Called when a registrar is added to a register mapper. This method will
   * be called multiple times if the registrar is added to multiple register
   * mappers or to the same register mapper with different protocol
   * identifiers.
   *
   * @param serviceAddress
   *            the address of the service
   * @param protocolIdentifier
   *            the protocol identifier
   */

  public void install (String protocolIdentifier)
  {
  }

  /**
   * Registers the interest of participant in a particular protocol.
   *
   * @param participantProtocolServiceAddress
   *            the address of the participant protocol service
   * @param protocolIdentifier
   *            the protocol identifier
   *
   * @return the PortReference of the coordinator protocol service
   *
   * @throws AlreadyRegisteredException
   *             if the participant is already registered for this
   *             coordination protocol under this activity identifier
   * @throws InvalidProtocolException
   *             if the coordination protocol is not supported
   * @throws InvalidStateException
   *             if the state of the coordinator no longer allows registration
   *             for this coordination protocol
   * @throws NoActivityException
   *             if the activity does not exist
   *
   * @message com.arjuna.mwlabs.wsc.model.twophase.RegistrarImple_1
   *          [com.arjuna.mwlabs.wsc.model.twophase.RegistrarImple_1] -
   *          Invalid type URI: < {0} , {1} >
   */

  public EndpointReferenceType register (EndpointReferenceType participantProtocolService, String protocolIdentifier, InstanceIdentifier instanceIdentifier)
      throws AlreadyRegisteredException, InvalidProtocolException,
      InvalidStateException, NoActivityException
  {
        if (instanceIdentifier == null)
            throw new NoActivityException();
       
    ActivityHierarchy hier = (ActivityHierarchy) _hierarchies.get(instanceIdentifier);

    if (hier == null)
      throw new NoActivityException();

    if (protocolIdentifier.equals(_2PCProtocolId))
    {
      // enlist participant that wraps the requester URI.

      try
      {
        _coordManager.resume(hier);
      }
      catch (com.arjuna.mw.wsas.exceptions.InvalidActivityException ex)
      {
        throw new NoActivityException();
      }
      catch (com.arjuna.mw.wsas.exceptions.SystemException ex)
      {
        throw new InvalidProtocolException();
      }

      try
      {
        // TODO check for AlreadyRegisteredException

        final String participantId = new Uid().stringForm();
        _coordManager.enlistParticipant(new TwoPhaseParticipant(
            participantProtocolService, participantId));

        _coordManager.suspend();

        return _coordinatorAddress;
      }
      catch (Exception ex)
      {
        throw new InvalidStateException();
      }
    }
    else
    {
      if (protocolIdentifier.equals(_synchProtocolId))
      {
        try
        {
          _coordManager.enlistSynchronization(new TwoPhaseSynchronization(
              participantProtocolService));

          _coordManager.suspend();

          return _coordinatorAddress;
        }
        catch (Exception ex)
        {
          throw new InvalidStateException();
        }
      }
      else
      {
        wscfLogger.arjLoggerI18N.warn("com.arjuna.mwlabs.wsc.model.twophase.RegistrarImple_1", new Object[]
        { _coordinationTypeURI, protocolIdentifier });

        throw new InvalidProtocolException();
      }
    }
  }

  /**
   * Called when a registrar is removed from a register mapper. This method
   * will be called multiple times if the registrar is removed from multiple
   * register mappers or from the same register mapper with different protocol
   * identifiers.
   *
   * @param serviceAddress
   *            the address of the service
   * @param protocolIdentifier
   *            the protocol identifier
   */

  public void uninstall (String protocolIdentifier)
  {
  }

  public final void associate () throws Exception
  {
    String txIdentifier = _coordManager.identifier().toString();
    ActivityHierarchy hier = _coordManager.suspend();

    _hierarchies.put(txIdentifier, hier);
  }

  public final void disassociate (String txIdentifier) throws Exception
  {
    _hierarchies.remove(txIdentifier);
  }

  private CoordinatorManager _coordManager;
  private HashMap _hierarchies = new HashMap();
    private EndpointReferenceType _coordinatorAddress;

  public static final String TWO_PHASE_DEPLOYMENT_URL = "com.arjuna.mwlabs.wsc.model.twophase.deploymentURL";
  public static final String _coordinationTypeURI = "urn:arjuna:tx-two-phase-commit";
  public static final String _2PCProtocolId = "urn:arjuna:tx-two-phase-commit#2pc";
  public static final String _synchProtocolId = "urn:arjuna:tx-two-phase-commit#synch";

}
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