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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.jdk.core.util.xml;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.net.InetAddress;
import java.net.MalformedURLException;
import java.net.Socket;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.CodeSource;
import java.security.ProtectionDomain;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.osee.framework.jdk.core.util.network.PortUtil;
/**
* @author Roberto E. Escobar
*/
public class XmlTransformAsProcess {
private Socket clientSocket;
private InputStream inputFromNetwork;
private OutputStream outputFromNetwork;
private Process process;
private XmlTransformAsProcess() {
process = null;
clientSocket = null;
inputFromNetwork = null;
outputFromNetwork = null;
}
private URL getClassLocation(final Class<XmlTransformServer> classToFind) {
URL result = null;
if (classToFind == null) {
throw new IllegalArgumentException("Class is null");
}
final String classAsResource = classToFind.getName().replace('.', '/').concat(".class");
final ProtectionDomain pd = classToFind.getProtectionDomain();
if (pd != null) {
final CodeSource cs = pd.getCodeSource();
if (cs != null) {
result = cs.getLocation();
}
if (result != null) {
// Convert a code source location into a full class file location
if (result.getProtocol().equals("file")) {
try {
if (result.toExternalForm().endsWith(".jar") || result.toExternalForm().endsWith(".zip")) {
result = new URL("jar:".concat(result.toExternalForm()).concat("!/").concat(classAsResource));
} else if (new File(result.getFile()).isDirectory()) {
result = new URL(result, classAsResource);
}
} catch (MalformedURLException ignore) {
// do nothing
}
}
}
}
if (result == null) {
// Try to find class definition as a resource
final ClassLoader classLoader = classToFind.getClassLoader();
result =
classLoader != null ? classLoader.getResource(classAsResource) : ClassLoader.getSystemResource(classAsResource);
}
return result;
}
private void connectToServer(InetAddress address, int port) throws Exception {
try {
for (int i = 0; i < 10; i++) {
try {
clientSocket = new Socket(address, port);
break;
} catch (Throwable th) {
Thread.sleep(1000);
}
}
System.out.println("Connected");
inputFromNetwork = new BufferedInputStream(clientSocket.getInputStream());
outputFromNetwork = new BufferedOutputStream(clientSocket.getOutputStream());
} catch (Exception ex) {
throw new Exception("Unable to Connect to Transform Server. ", ex);
}
}
private void launchServer(int port) throws Exception {
List<String> commands = new ArrayList<String>();
try {
URL url = getClassLocation(XmlTransformServer.class);
String path = new File(url.toURI()).getAbsolutePath();
int indexOf = path.indexOf("bin");
path = path.substring(0, indexOf + 4);
File classFileLocation = new File(path);
String className = XmlTransformServer.class.getName();
commands.add("java");
commands.add("-Xmx1024M");
commands.add(className);
commands.add(Integer.toString(port));
ProcessBuilder builder = new ProcessBuilder();
builder.directory(classFileLocation);
builder.command(commands);
process = builder.start();
Thread.sleep(800);
} catch (URISyntaxException ex) {
throw new Exception("Unable to find XmlTransformServer class in File System. ", ex);
} catch (Exception ex) {
throw new Exception("Unable to launch TransformServer. ", ex);
}
}
public void processXml(InputStream xmlSource, InputStream xsltSource, Writer result) {
try {
XmlTransformServer.sendStream(clientSocket, xmlSource, outputFromNetwork);
Thread.sleep(2000);
System.gc();
System.out.println("Sent Xml");
XmlTransformServer.sendStream(clientSocket, xsltSource, outputFromNetwork);
System.gc();
Thread.sleep(2000);
System.out.println("Sent Xslt");
XmlTransformServer.receiveStream(clientSocket, inputFromNetwork, result);
System.gc();
} catch (Exception ex) {
ex.printStackTrace();
}
}
private void clearResources() throws Exception {
if (inputFromNetwork != null) {
inputFromNetwork.close();
}
if (outputFromNetwork != null) {
outputFromNetwork.close();
}
if (clientSocket != null) {
clientSocket.close();
}
if (process != null) {
process.destroy();
}
}
public static void getHtmlFromXml(InputStream xmlSource, InputStream xsltSource, Writer results) throws Exception {
XmlTransformAsProcess xmlTransformProcess = new XmlTransformAsProcess();
try {
InetAddress address = InetAddress.getLocalHost();
int port = PortUtil.getInstance().getValidPort();
System.out.println("Transform Server at port: " + port);
System.gc();
xmlTransformProcess.launchServer(port);
xmlTransformProcess.connectToServer(address, port);
xmlTransformProcess.processXml(xmlSource, xsltSource, results);
} finally {
xmlTransformProcess.clearResources();
System.gc();
}
}
public static void main(String[] args) throws Exception {
InputStream xmlInput = new FileInputStream(args[0]);
InputStream xsltInput = new FileInputStream(args[1]);
getHtmlFromXml(xmlInput, xsltInput, new PrintWriter(System.out));
}
}
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