Package org.apache.sandesha2.handlers

Source Code of org.apache.sandesha2.handlers.SandeshaInHandler

/*
* Copyright 1999-2004 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.sandesha2.handlers;

import javax.xml.namespace.QName;
import org.apache.axis2.AxisFault;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.context.ServiceContext;
import org.apache.axis2.description.AxisService;
import org.apache.axis2.description.Parameter;
import org.apache.axis2.engine.AxisEngine;
import org.apache.axis2.handlers.AbstractHandler;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.sandesha2.Sandesha2ClientAPI;
import org.apache.sandesha2.Sandesha2Constants;
import org.apache.sandesha2.SandeshaException;
import org.apache.sandesha2.RMMsgContext;
import org.apache.sandesha2.msgprocessors.MsgProcessor;
import org.apache.sandesha2.msgprocessors.MsgProcessorFactory;
import org.apache.sandesha2.util.FaultManager;
import org.apache.sandesha2.util.MsgInitializer;
import org.apache.sandesha2.util.SandeshaUtil;

/**
* This is invoked in the inFlow of an RM endpoint. This is responsible for selecting an suitable
* message processor and letting it process the message.
*
* @author Chamikara Jayalath <chamikaramj@gmail.com>
*/

public class SandeshaInHandler extends AbstractHandler {

  protected Log log = LogFactory.getLog(SandeshaInHandler.class.getName());

  public QName getName() {
    return new QName(Sandesha2Constants.IN_HANDLER_NAME);
  }

  public void invoke(MessageContext msgCtx) throws AxisFault {
 
    ConfigurationContext context = msgCtx.getConfigurationContext();
    if (context == null)
      throw new AxisFault("ConfigurationContext is null");

    String DONE = (String) msgCtx
        .getProperty(Sandesha2Constants.APPLICATION_PROCESSING_DONE);
    if (null != DONE && "true".equals(DONE))
      return;

    FaultManager faultManager = new FaultManager();
    RMMsgContext faultMessageContext = faultManager
        .checkForPossibleFaults(msgCtx);
    if (faultMessageContext != null) {
      AxisEngine engine = new AxisEngine(context);
      engine.send(faultMessageContext.getMessageContext());
      return;
    }

    AxisService axisService = msgCtx.getAxisService();
    if (axisService == null)
      throw new AxisFault("AxisService is null");

    RMMsgContext rmMsgCtx = null;
    try {
      rmMsgCtx = MsgInitializer.initializeMessage(msgCtx);
    } catch (SandeshaException ex) {
      throw new AxisFault("Cant initialize the message");
    }

    ServiceContext serviceContext = msgCtx.getServiceContext();
    Object debug = null;
    if (serviceContext != null) {
      debug = msgCtx.getProperty(Sandesha2ClientAPI.SANDESHA_DEBUG_MODE);
      if (debug != null && "on".equals(debug)) {
        System.out.println("DEBUG: SandeshaInHandler got a '"
            + SandeshaUtil.getMessageTypeString(rmMsgCtx
                .getMessageType()) + "' message.");
      }
    }

    MsgProcessor msgProcessor = MsgProcessorFactory
        .getMessageProcessor(rmMsgCtx.getMessageType());

    if (msgProcessor == null)
      throw new AxisFault("Cant find a suitable message processor");

    try {
      msgProcessor.processMessage(rmMsgCtx);
    } catch (SandeshaException se) {
      se.printStackTrace();
      throw new AxisFault("Error in processing the message");
    }

  }

}
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