/*
* Copyright 2004,2005 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.axis2.transport.tcp;

import org.apache.axiom.om.impl.builder.StAXBuilder;
import org.apache.axiom.om.util.StAXUtils;
import org.apache.axiom.soap.SOAPEnvelope;
import org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.description.TransportInDescription;
import org.apache.axis2.description.TransportOutDescription;
import org.apache.axis2.engine.AxisConfiguration;
import org.apache.axis2.engine.AxisEngine;
import org.apache.axis2.i18n.Messages;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.net.Socket;

/**
 * This Class is the work hoarse of the TCP request, this process the incomming SOAP Message.
 */
public class TCPWorker implements Runnable {
    private static final Log log = LogFactory.getLog(TCPWorker.class);
    private ConfigurationContext configurationContext;
    private Socket socket;

    public TCPWorker(ConfigurationContext configurationContext, Socket socket) {
        this.configurationContext = configurationContext;
        this.socket = socket;
    }

    public void run() {
        MessageContext msgContext = null;

        try {
            AxisEngine engine = new AxisEngine(configurationContext);
            AxisConfiguration axisConf = configurationContext.getAxisConfiguration();
            TransportOutDescription transportOut =
                    axisConf.getTransportOut(new QName(Constants.TRANSPORT_TCP));
            TransportInDescription transportIn =
                    axisConf.getTransportIn(new QName(Constants.TRANSPORT_TCP));

            if ((transportOut != null) && (transportIn != null)) {

                // create the Message Context and fill in the values
                msgContext = new MessageContext();
                msgContext.setIncomingTransportName(Constants.TRANSPORT_TCP);
                msgContext.setConfigurationContext(configurationContext);
                msgContext.setTransportIn(transportIn);
                msgContext.setTransportOut(transportOut);
                msgContext.setServerSide(true);

                OutputStream out = socket.getOutputStream();

                msgContext.setProperty(MessageContext.TRANSPORT_OUT, out);

                // create the SOAP Envelope
                Reader in = new InputStreamReader(socket.getInputStream());
                XMLStreamReader xmlreader = StAXUtils.createXMLStreamReader(in);
                StAXBuilder builder = new StAXSOAPModelBuilder(xmlreader, null);
                SOAPEnvelope envelope = (SOAPEnvelope) builder.getDocumentElement();

                msgContext.setEnvelope(envelope);

                if (envelope.getBody().hasFault()) {
                    engine.receiveFault(msgContext);
                } else {
                    engine.receive(msgContext);
                }
            } else {
                throw new AxisFault(Messages.getMessage("unknownTransport",
                        Constants.TRANSPORT_TCP));
            }
        } catch (Throwable e) {
            try {
                AxisEngine engine = new AxisEngine(configurationContext);

                if (msgContext != null) {
                    msgContext.setProperty(MessageContext.TRANSPORT_OUT, socket.getOutputStream());

                    MessageContext faultContext = engine.createFaultMessageContext(msgContext, e);

                    engine.sendFault(faultContext);
                }
            } catch (Exception e1) {
                log.error(e);
            }
        } finally {
            if (socket != null) {
                try {
                    this.socket.close();
                } catch (IOException e1) {
                }
            }
        }
    }
}