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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.axis2.transport.local;

import org.apache.axis2.AxisFault;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.description.TransportOutDescription;
import org.apache.axis2.handlers.AbstractHandler;
import org.apache.axis2.transport.TransportSender;
import org.apache.axis2.transport.TransportUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.ByteArrayOutputStream;
import java.io.OutputStream;

/**
 * LocalResponder
 */
public class LocalResponder extends AbstractHandler implements TransportSender {
    protected static final Log log = LogFactory.getLog(LocalResponder.class);
    
    
    //  fixed for Executing LocalTransport in MulthThread. 
    private OutputStream out;

    public LocalResponder(OutputStream response) {
        this.out = response;        
    }

    public void init(ConfigurationContext confContext, TransportOutDescription transportOut)
            throws AxisFault {
    }

    public void stop() {
    }

    public void cleanup(MessageContext msgContext) throws AxisFault {
    }

    /**
     * Method invoke
     *
     * @param msgContext the active MessageContext
     * @throws AxisFault
     */
    public InvocationResponse invoke(MessageContext msgContext) throws AxisFault {

        // Check for the REST behaviour, if you desire rest beahaviour
        // put a  at the axis2.xml
        msgContext.setDoingMTOM(TransportUtils.doWriteMTOM(msgContext));
        msgContext.setDoingSwA(TransportUtils.doWriteSwA(msgContext));

        EndpointReference epr = null;

        if (msgContext.getTo() != null && !msgContext.getTo().hasAnonymousAddress()) {
            epr = msgContext.getTo();
        }

        try {
            if (log.isDebugEnabled()) {
                log.debug("Response - " + msgContext.getEnvelope().toString());
            }

            if (epr != null) {
                if (!epr.hasNoneAddress()) {
                    TransportUtils.writeMessage(msgContext, out);
                }
            } else {
                out = (OutputStream) msgContext.getProperty(MessageContext.TRANSPORT_OUT);

                if (out != null) {
                    TransportUtils.writeMessage(msgContext, out);
                } else {
                    throw new AxisFault(
                            "Both the TO and Property MessageContext.TRANSPORT_OUT is Null, No where to send");
                }
            }
        } catch (AxisFault axisFault) {
            // At this point all we can do is log this error, since it happened while
            // we were sending the response!
            log.error("Error sending response", axisFault);
        }

        TransportUtils.setResponseWritten(msgContext, true);
        
        return InvocationResponse.CONTINUE;
    }
}