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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.cxf.ws.rm;

import java.util.Collection;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageUtils;
import org.apache.cxf.ws.addressing.AddressingPropertiesImpl;
import org.apache.cxf.ws.addressing.ContextUtils;
import org.apache.cxf.ws.addressing.MAPAggregator;

/**
 * 
 */
public class RMInInterceptor extends AbstractRMInterceptor {
    
    private static final Logger LOG = LogUtils.getL7dLogger(RMInInterceptor.class);
  
    public RMInInterceptor() {
 
        addBefore(MAPAggregator.class.getName());
    }
   
    @Override
    public void handleFault(Message message) {
        message.put(MAPAggregator.class.getName(), true);
        if (MessageUtils.isTrue(message.get(RMMessageConstants.DELIVERING_ROBUST_ONEWAY))) {
            // revert the delivering entry from the destination sequence
            Destination destination = getManager().getDestination(message);
            destination.releaseDeliveringStatus(message);
        }
    }

    protected void handle(Message message) throws SequenceFault, RMException {
        LOG.entering(getClass().getName(), "handleMessage");
        
        RMProperties rmps = RMContextUtils.retrieveRMProperties(message, false);
        
        // message addressing properties may be null, e.g. in case of a runtime fault 
        // on the server side
        final AddressingPropertiesImpl maps = RMContextUtils.retrieveMAPs(message, false, false);
        if (null == maps) {
            return;
        }

        String action = null;
        if (null != maps.getAction()) {
            action = maps.getAction().getValue();
        }

        if (LOG.isLoggable(Level.FINE)) {
            LOG.fine("Action: " + action);
        }
        
        Object originalRequestor = message.get(RMMessageConstants.ORIGINAL_REQUESTOR_ROLE);
        if (null != originalRequestor) {
            LOG.fine("Restoring original requestor role to: " + originalRequestor);
            message.put(Message.REQUESTOR_ROLE, originalRequestor);
        }
        
        // Destination destination = getManager().getDestination(message);
        // RMEndpoint rme = getManager().getReliableEndpoint(message);
        // Servant servant = new Servant(rme);
        
        boolean isServer = RMContextUtils.isServerSide(message);
        LOG.fine("isServerSide: " + isServer);
        boolean isApplicationMessage = !RMContextUtils.isRMProtocolMessage(action);       
        LOG.fine("isApplicationMessage: " + isApplicationMessage);
        
        // for application AND out of band messages
        
        RMEndpoint rme = getManager().getReliableEndpoint(message);
        Destination destination = getManager().getDestination(message);
        
        if (isApplicationMessage) {                        
            if (null != rmps) {
                processAcknowledgments(rme.getSource(), rmps);
                processAcknowledgmentRequests(destination, message);
                processSequence(destination, message);
                processDeliveryAssurance(rmps);
            }
            if (ContextUtils.retrieveDeferredUncorrelatedMessageAbort(message)) {
                LOG.info("deferred uncorrelated message abort");
                message.getInterceptorChain().abort();
            } else {
                rme.receivedApplicationMessage();
            }
        } else {
            rme.receivedControlMessage();
            if (RMConstants.getSequenceAckAction().equals(action)) {
                processAcknowledgments(rme.getSource(), rmps);
            } else if (RMConstants.getLastMessageAction().equals(action)) {
                processSequence(destination, message);
            } else if (RMConstants.getCreateSequenceAction().equals(action) && !isServer) {
                LOG.fine("Processing inbound CreateSequence on client side.");
                Servant servant = rme.getServant();
                CreateSequenceResponseType csr = servant.createSequence(message);
                Proxy proxy = rme.getProxy();
                proxy.createSequenceResponse(csr);
                return;
            }
        }
        
        assertReliability(message);
    }
    
    void processAcknowledgments(Source source, RMProperties rmps) throws SequenceFault, RMException {
        
        Collection acks = rmps.getAcks();
        if (null != acks) {
            for (SequenceAcknowledgement ack : acks) {
                Identifier id = ack.getIdentifier();
                SourceSequence ss = source.getSequence(id);                
                if (null != ss) {
                    ss.setAcknowledged(ack);
                } else {
                    throw (new SequenceFaultFactory()).createUnknownSequenceFault(id);
                }
            }
        }
    }

    void processAcknowledgmentRequests(Destination destination, Message message) 
        throws SequenceFault, RMException {
        destination.ackRequested(message); 
    }
    
    void processSequence(Destination destination, Message message) 
        throws SequenceFault, RMException {
        final boolean robust =
            MessageUtils.isTrue(message.getContextualProperty(Message.ROBUST_ONEWAY));
        if (robust) {
            // set this property to change the acknlowledging behavior
            message.put(RMMessageConstants.DELIVERING_ROBUST_ONEWAY, Boolean.TRUE);
        } 
        destination.acknowledge(message);
    }
    
    void processDeliveryAssurance(RMProperties rmps) {
        
    }
}