/* ***** 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
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*
* 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) 2012
* the Initial Developer. All Rights Reserved.
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* See @authors listed below
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package org.dcm4che3.tool.hl7rcv;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.MalformedURLException;
import java.net.Socket;
import java.net.URL;
import java.util.Date;
import java.util.ResourceBundle;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import javax.xml.transform.Templates;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamSource;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.MissingOptionException;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.dcm4che3.hl7.HL7Charset;
import org.dcm4che3.hl7.HL7ContentHandler;
import org.dcm4che3.hl7.HL7Exception;
import org.dcm4che3.hl7.HL7Message;
import org.dcm4che3.hl7.HL7Parser;
import org.dcm4che3.hl7.HL7Segment;
import org.dcm4che3.io.SAXTransformer;
import org.dcm4che3.net.Connection;
import org.dcm4che3.net.Device;
import org.dcm4che3.net.Connection.Protocol;
import org.dcm4che3.net.hl7.HL7Application;
import org.dcm4che3.net.hl7.HL7DeviceExtension;
import org.dcm4che3.net.hl7.HL7MessageListener;
import org.dcm4che3.tool.common.CLIUtils;
import org.dcm4che3.util.StringUtils;
/**
* @author Gunter Zeilinger <gunterze@gmail.com>
*
*/
public class HL7Rcv {
private static final ResourceBundle rb =
ResourceBundle.getBundle("org.dcm4che3.tool.hl7rcv.messages");
private static SAXTransformerFactory factory =
(SAXTransformerFactory) TransformerFactory.newInstance();
private final Device device = new Device("hl7rcv");
private final HL7DeviceExtension hl7Ext = new HL7DeviceExtension();
private final HL7Application hl7App = new HL7Application("*");
private final Connection conn = new Connection();
private String storageDir;
private String charset;
private Templates tpls;
private String[] xsltParams;
private final HL7MessageListener handler = new HL7MessageListener() {
@Override
public byte[] onMessage(HL7Application hl7App, Connection conn,
Socket s, HL7Segment msh, byte[] msg, int off, int len,
int mshlen) throws HL7Exception {
try {
return HL7Rcv.this.onMessage(msh, msg, off, len);
} catch (Exception e) {
throw new HL7Exception(HL7Exception.AE, e);
}
}
};
public HL7Rcv() throws IOException {
conn.setProtocol(Protocol.HL7);
device.addDeviceExtension(hl7Ext);
device.addConnection(conn);
hl7Ext.addHL7Application(hl7App);
hl7App.setAcceptedMessageTypes("*");
hl7App.addConnection(conn);
hl7App.setHL7MessageListener(handler);
}
public void setStorageDirectory(String storageDir) {
this.storageDir = storageDir;
}
public void setXSLT(URL xslt) throws Exception {
tpls = SAXTransformer.newTemplates(
new StreamSource(xslt.openStream(), xslt.toExternalForm()));
}
public void setXSLTParameters(String[] xsltParams) {
this.xsltParams = xsltParams;
}
public void setCharacterSet(String charset) {
this.charset = charset;
}
private static CommandLine parseComandLine(String[] args)
throws ParseException {
Options opts = new Options();
addOptions(opts);
CLIUtils.addSocketOptions(opts);
CLIUtils.addTLSOptions(opts);
CLIUtils.addCommonOptions(opts);
return CLIUtils.parseComandLine(args, opts, rb, HL7Rcv.class);
}
@SuppressWarnings("static-access")
public static void addOptions(Options opts) {
opts.addOption(null, "ignore", false, rb.getString("ignore"));
opts.addOption(OptionBuilder
.hasArg()
.withArgName("path")
.withDescription(rb.getString("directory"))
.withLongOpt("directory")
.create(null));
opts.addOption(OptionBuilder
.withLongOpt("xsl")
.hasArg()
.withArgName("xsl-file")
.withDescription(rb.getString("xsl"))
.create("x"));
opts.addOption(OptionBuilder
.withLongOpt("xsl-param")
.hasArgs()
.withValueSeparator('=')
.withArgName("name=value")
.withDescription(rb.getString("xsl-param"))
.create(null));
opts.addOption(OptionBuilder
.withLongOpt("charset")
.hasArg()
.withArgName("name")
.withDescription(rb.getString("charset"))
.create(null));
opts.addOption(OptionBuilder
.hasArg()
.withArgName("[ip:]port")
.withDescription(rb.getString("bind-server"))
.withLongOpt("bind")
.create("b"));
opts.addOption(OptionBuilder
.hasArg()
.withArgName("ms")
.withDescription(rb.getString("idle-timeout"))
.withLongOpt("idle-timeout")
.create(null));
}
public static void main(String[] args) {
try {
CommandLine cl = parseComandLine(args);
HL7Rcv main = new HL7Rcv();
configure(main, cl);
ExecutorService executorService = Executors.newCachedThreadPool();
ScheduledExecutorService scheduledExecutorService =
Executors.newSingleThreadScheduledExecutor();
main.device.setScheduledExecutor(scheduledExecutorService);
main.device.setExecutor(executorService);
main.device.bindConnections();
} catch (ParseException e) {
System.err.println("hl7rcv: " + e.getMessage());
System.err.println(rb.getString("try"));
System.exit(2);
} catch (Exception e) {
System.err.println("hl7rcv: " + e.getMessage());
e.printStackTrace();
System.exit(2);
}
}
private static void configure(HL7Rcv main, CommandLine cl)
throws Exception, MalformedURLException, ParseException,
IOException {
if (!cl.hasOption("ignore"))
main.setStorageDirectory(
cl.getOptionValue("directory", "."));
if (cl.hasOption("x")) {
String s = cl.getOptionValue("x");
main.setXSLT(new File(s).toURI().toURL());
main.setXSLTParameters(cl.getOptionValues("xsl-param"));
}
main.setCharacterSet(cl.getOptionValue("charset"));
configureBindServer(main.conn, cl);
CLIUtils.configure(main.conn, cl);
}
private static void configureBindServer(Connection conn, CommandLine cl)
throws ParseException {
if (!cl.hasOption("b"))
throw new MissingOptionException(
CLIUtils.rb.getString("missing-bind-opt"));
String aeAtHostPort = cl.getOptionValue("b");
String[] hostAndPort = StringUtils.split(aeAtHostPort, ':');
int portIndex = hostAndPort.length - 1;
conn.setPort(Integer.parseInt(hostAndPort[portIndex]));
if (portIndex > 0)
conn.setHostname(hostAndPort[0]);
}
private byte[] onMessage(HL7Segment msh, byte[] msg, int off, int len)
throws Exception {
if (storageDir != null)
storeToFile(msg, off, len,
new File(
new File(storageDir, msh.getMessageType()),
msh.getField(9, "_NULL_")));
return (tpls == null)
? HL7Message.makeACK(msh, HL7Exception.AA, null).getBytes(null)
: xslt(msh, msg, off, len);
}
private void storeToFile(byte[] msg, int off, int len, File f)
throws FileNotFoundException, IOException {
Connection.LOG.info("M-WRITE {}", f);
f.getParentFile().mkdirs();
FileOutputStream out = new FileOutputStream(f);
try {
out.write(msg, off, len);
} finally {
out.close();
}
}
private byte[] xslt(HL7Segment msh, byte[] msg, int off, int len)
throws Exception {
String charsetName = HL7Charset.toCharsetName(msh.getField(17, charset));
ByteArrayOutputStream out = new ByteArrayOutputStream();
TransformerHandler th = factory.newTransformerHandler(tpls);
Transformer t = th.getTransformer();
t.setParameter("MessageControlID", HL7Segment.nextMessageControlID());
t.setParameter("DateTimeOfMessage", HL7Segment.timeStamp(new Date()));
if (xsltParams != null)
for (int i = 1; i < xsltParams.length; i++, i++)
t.setParameter(xsltParams[i-1], xsltParams[i]);
th.setResult(new SAXResult(new HL7ContentHandler(
new OutputStreamWriter(out, charsetName))));
new HL7Parser(th).parse(new InputStreamReader(
new ByteArrayInputStream(msg, off, len),
charsetName));
return out.toByteArray();
}
public Device getDevice() {
return device;
}
public Connection getConn() {
return conn;
}
}