src/org/apache/kandula/participant/TransactionInHandler.java

/*
 * Copyright 2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *  
 */
package org.apache.kandula.participant;

import java.io.IOException;

import javax.xml.namespace.QName;

import org.apache.axis2.AxisFault;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.handlers.AbstractHandler;
import org.apache.axis2.om.OMElement;
import org.apache.axis2.soap.SOAPHeader;
import org.apache.kandula.Constants;
import org.apache.kandula.context.AbstractContext;
import org.apache.kandula.context.at.ATParticipantContext;
import org.apache.kandula.context.coordination.CoordinationContext;
import org.apache.kandula.context.coordination.SimpleCoordinationContext;
import org.apache.kandula.faults.AbstractKandulaException;
import org.apache.kandula.storage.StorageFactory;
import org.apache.kandula.storage.Store;
import org.apache.kandula.utility.EPRHandlingUtils;
import org.apache.kandula.utility.EndpointReferenceFactory;
import org.apache.kandula.wscoor.RegistrationCoordinatorPortTypeRawXMLStub;

public class TransactionInHandler extends AbstractHandler {
	private ThreadLocal threadInfo = new ThreadLocal();

	public void invoke(MessageContext msgContext) throws AxisFault {
		KandulaResource resource;
		StorageFactory.getInstance().setConfigurationContext(
				msgContext.getServiceContext().getConfigurationContext());
		ATParticipantContext context = new ATParticipantContext();
		SOAPHeader header = msgContext.getEnvelope().getHeader();
		OMElement coordinationElement = header.getFirstChildWithName(new QName(
				Constants.WS_COOR, "CoordinationContext"));
		if (coordinationElement == null) {
			throw new AxisFault(
					"Transaction Handler engaged.. No Coordination Context found");
		}
		CoordinationContext coorContext = new SimpleCoordinationContext(
				coordinationElement);
		context.setCoordinationContext(coorContext);

		// TODO : See whether we can allow the user to set the resource when the
		// business logic receives the message
		String resourceFile = (String) msgContext.getParameter(
				Constants.KANDULA_RESOURCE).getValue();
		String participantRepository = EndpointReferenceFactory.getInstance()
				.getParticipantRepository();
		String participantAxis2Xml = EndpointReferenceFactory.getInstance()
				.getParticipantAxis2Conf();

		try {
			resource = (KandulaResource) Class.forName(resourceFile)
					.newInstance();
		} catch (Exception e) {
			throw new AxisFault(e);
		}
		context.setResource(resource);

		String id = EPRHandlingUtils.getRandomStringOf18Characters();
		Store store = StorageFactory.getInstance().getStore();
		context.setProperty(AbstractContext.REQUESTER_ID, id);
		store.put(id, context);
		ParticipantTransactionManager txManager = new ParticipantTransactionManager();
		try {
			RegistrationCoordinatorPortTypeRawXMLStub stub = new RegistrationCoordinatorPortTypeRawXMLStub(
					participantRepository, participantAxis2Xml, coorContext
							.getRegistrationService());
			EndpointReference participantProtocolService = EndpointReferenceFactory
					.getInstance().get2PCParticipantEndpoint(id);
			stub.registerOperation(resource.getProtocol(),
					participantProtocolService, id);
		} catch (IOException e) {
			throw new AxisFault(e);
		} catch (AbstractKandulaException e) {
			AxisFault e1 = new AxisFault(e);
			e1.setFaultCode(e.getFaultCode());
			throw e1;
		}

	}
}