/*
 * 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, 2003, 2004,
 *
 * Arjuna Technologies Limited,
 * Newcastle upon Tyne,
 * Tyne and Wear,
 * UK.
 *
 * $Id: RegistrarImple.java,v 1.7.4.1 2005/11/22 10:36:14 kconner Exp $
 */

package com.arjuna.mwlabs.wst.ba;

import java.util.HashMap;
import java.util.concurrent.ConcurrentHashMap;

import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.mw.wsas.activity.ActivityHierarchy;
import com.arjuna.mw.wsas.exceptions.SystemException;
import com.arjuna.mw.wscf.exceptions.ProtocolNotRegisteredException;
import com.arjuna.mw.wscf.model.sagas.CoordinatorManagerFactory;
import com.arjuna.mw.wscf.model.sagas.api.CoordinatorManager;
import com.arjuna.mw.wstx.logging.wstxLogger;
import com.arjuna.mwlabs.wst.ba.participants.BusinessAgreementWithCoordinatorCompletionImple;
import com.arjuna.mwlabs.wst.ba.participants.BusinessAgreementWithParticipantCompletionImple;
import com.arjuna.webservices.SoapRegistry;
import com.arjuna.webservices.wsaddr.AttributedURIType;
import com.arjuna.webservices.wsaddr.EndpointReferenceType;
import com.arjuna.webservices.wsarj.InstanceIdentifier;
import com.arjuna.webservices.wsarjtx.ArjunaTXConstants;
import com.arjuna.webservices.wsba.BusinessActivityConstants;
import com.arjuna.wsc.AlreadyRegisteredException;
import com.arjuna.wsc.InvalidProtocolException;
import com.arjuna.wsc.InvalidStateException;
import com.arjuna.wsc.NoActivityException;
import com.arjuna.wsc.Registrar;
import com.arjuna.wsc.RegistrarMapper;
import com.arjuna.wst.messaging.engines.CoordinatorCompletionCoordinatorEngine;
import com.arjuna.wst.messaging.engines.ParticipantCompletionCoordinatorEngine;
import com.arjuna.wst.stub.BusinessAgreementWithCoordinatorCompletionStub;
import com.arjuna.wst.stub.BusinessAgreementWithParticipantCompletionStub;

public class RegistrarImple implements Registrar
{

	public RegistrarImple () throws ProtocolNotRegisteredException,
			SystemException
	{
		_coordManager = CoordinatorManagerFactory.coordinatorManager();

		// register with mapper using tx id as protocol identifier.
		final RegistrarMapper mapper = RegistrarMapper.getFactory();

		mapper.addRegistrar(
			BusinessActivityConstants.WSBA_SUB_PROTOCOL_PARTICIPANT_COMPLETION, this);
		mapper.addRegistrar(
			BusinessActivityConstants.WSBA_SUB_PROTOCOL_COORDINATOR_COMPLETION, this);
		mapper.addRegistrar(ArjunaTXConstants.WSARJTX_PROTOCOL_TERMINATION, this);
	}

	/**
	 * 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 protocolIdentifier
	 *            the protocol identifier
	 */

	public void install (String protocolIdentifier)
	{
	}

	/**
	 * Registers the interest of participant in a particular protocol.
	 * 
	 * @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.wst.ba.RegistrarImple_1
	 *          [com.arjuna.mwlabs.wst.ba.RegistrarImple_1] - Invalid type URI: <
	 *          {0} , {1} >
	 */

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

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

		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();
		}

		// TODO check for AlreadyRegisteredException

		if (BusinessActivityConstants.WSBA_SUB_PROTOCOL_PARTICIPANT_COMPLETION
				.equals(protocolIdentifier))
		{
			// enlist participant that wraps the requester URI.
			final String id = new Uid().stringForm();

			try
			{
                final ParticipantCompletionCoordinatorEngine engine = new ParticipantCompletionCoordinatorEngine(id, participantProtocolService) ;
				BusinessAgreementWithParticipantCompletionImple participant = new BusinessAgreementWithParticipantCompletionImple(
						new BusinessAgreementWithParticipantCompletionStub(engine), id);
                engine.setCoordinator(participant.participantManager()) ;

				_coordManager.enlistParticipant(participant);

				_coordManager.suspend();

				return getParticipantManager(
						BusinessActivityConstants.SERVICE_PARTICIPANT_COMPLETION_COORDINATOR,
						id);
			}
			catch (Exception ex)
			{
				throw new InvalidStateException();
			}
		}
		else
			if (BusinessActivityConstants.WSBA_SUB_PROTOCOL_COORDINATOR_COMPLETION
					.equals(protocolIdentifier))
			{
				final String id = new Uid().stringForm();
				try
				{
                    final CoordinatorCompletionCoordinatorEngine engine = new CoordinatorCompletionCoordinatorEngine(id, participantProtocolService) ;
					BusinessAgreementWithCoordinatorCompletionImple participant = new BusinessAgreementWithCoordinatorCompletionImple(
							new BusinessAgreementWithCoordinatorCompletionStub(engine), id);
                    engine.setCoordinator(participant.participantManager()) ;

					_coordManager.enlistParticipant(participant);

					_coordManager.suspend();

					return getParticipantManager(
							BusinessActivityConstants.SERVICE_COORDINATOR_COMPLETION_COORDINATOR,
							id);
				}
				catch (Exception ex)
				{
					throw new InvalidStateException();
				}
			}
			else
				if (ArjunaTXConstants.WSARJTX_PROTOCOL_TERMINATION.equals(protocolIdentifier))
				{
					try
					{
						return getParticipantManager(
								ArjunaTXConstants.SERVICE_TERMINATION_COORDINATOR,
								instanceIdentifier.getInstanceIdentifier());
					}
					catch (Exception ex)
					{
						throw new InvalidStateException();
					}
				}
				else
				{
					wstxLogger.arjLoggerI18N
							.warn(
									"com.arjuna.mwlabs.wst.ba.RegistrarImple_1",
									new Object[] { BusinessActivityConstants.WSBA_PROTOCOL_ATOMIC_OUTCOME, 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 protocolIdentifier
	 *            the protocol identifier
	 */

	public void uninstall (String protocolIdentifier)
	{
	}

	public final void associate () throws Exception
	{
		// TODO colocation won't do suspend

		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 EndpointReferenceType getParticipantManager (final String service,
			final String id)
	{
		final SoapRegistry soapRegistry = SoapRegistry.getRegistry();
		final String participantManagerParticipantURI = soapRegistry
				.getServiceURI(service);
		final EndpointReferenceType participantManagerParticipant = new EndpointReferenceType(
				new AttributedURIType(participantManagerParticipantURI));
		InstanceIdentifier.setEndpointInstanceIdentifier(
				participantManagerParticipant, id);
		return participantManagerParticipant;
	}

	private CoordinatorManager _coordManager = null;

	private ConcurrentHashMap _hierarchies = new ConcurrentHashMap();
}
