DicomConsumer.java

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
 *
 * The Initial Developer of the Original Code is
 * Agfa Healthcare.
 * Portions created by the Initial Developer are Copyright (C) 2013
 * the Initial Developer. All Rights Reserved.
 *
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 * See @authors listed below
 *
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package org.dcm4che3.camel;

import java.io.IOException;

import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.impl.DefaultConsumer;
import org.apache.camel.util.AsyncProcessorHelper;
import org.dcm4che3.data.Tag;
import org.dcm4che3.data.Attributes;
import org.dcm4che3.net.Association;
import org.dcm4che3.net.Dimse;
import org.dcm4che3.net.DimseRQHandler;
import org.dcm4che3.net.PDVInputStream;
import org.dcm4che3.net.Status;
import org.dcm4che3.net.pdu.PresentationContext;
import org.dcm4che3.net.service.DicomServiceException;

/**
 * @author Gunter Zeilinger <gunterze@gmail.com>
 *
 */
public class DicomConsumer extends DefaultConsumer implements DimseRQHandler{

    public DicomConsumer(DicomEndpoint endpoint, Processor processor) {
        super(endpoint, processor);
    }

    @Override
    public DicomEndpoint getEndpoint() {
        return (DicomEndpoint) super.getEndpoint();
    }

    public String[] getSopClasses() {
        return getEndpoint().getSopClasses();
    }

    @Override
    protected void doStart() throws Exception {
        super.doStart();
        getEndpoint().getComponent().registerDicomConsumer(this);
    }

    @Override
    protected void doStop() throws Exception {
        getEndpoint().getComponent().unregisterDicomConsumer(this);
        super.doStop();
    }

    @Override
    public void onClose(Association as) {
        // TODO Auto-generated method stub
        
    }

    @Override
    public void onDimseRQ(Association as, PresentationContext pc, Dimse dimse,
            Attributes cmd, PDVInputStream data) throws IOException {
        final int msgid = cmd.getInt(Tag.MessageID, 0);
        Exchange exchange = getEndpoint().createExchange(dimse, cmd, data);
        AsyncCallback callback = new EndpointDimseRQHandlerAsyncCallback(
                as, pc, dimse, msgid, exchange);
        AsyncProcessorHelper.process(getAsyncProcessor(), exchange, callback);
    }

    private final class EndpointDimseRQHandlerAsyncCallback
        implements AsyncCallback {
    
        private final Association as;
        private final PresentationContext pc;
        private final Dimse dimse;
        private final int msgId;
        private final Exchange exchange;
    
        public EndpointDimseRQHandlerAsyncCallback(Association as,
                PresentationContext pc, Dimse dimse, int msgId,
                Exchange exchange) {
            this.as = as;
            this.pc = pc;
            this.dimse = dimse;
            this.msgId = msgId;
            this.exchange = exchange;
        }
    
        @Override
        public void done(boolean doneSync) {
            Attributes cmd;
            Attributes data;
            if (exchange.getException() != null) {
                DicomServiceException dse;
                Exception ex = exchange.getException();
                if (ex instanceof DicomServiceException) {
                    dse = (DicomServiceException) ex;
                } else {
                    dse = new DicomServiceException(Status.ProcessingFailure, ex);
                }
                cmd = dse.mkRSP(dimse.commandFieldOfRSP(), msgId);
                data = dse.getDataset();
            } else {
                DicomMessage out = exchange.getOut(DicomMessage.class);
                cmd = out.getCommand();
                data = out.getBody(Attributes.class);
            }
            as.tryWriteDimseRSP(pc, cmd, data);
        }
    
    }
}