/*******************************************************************************
* Copyright (c) 2007, 2008 IBM Corporation and others.
* 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:
* IBM Corporation - Initial API and implementation
*******************************************************************************/
package org.eclipse.wst.server.preview.adapter.internal.core;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.debug.core.model.LaunchConfigurationDelegate;
import org.eclipse.osgi.service.environment.Constants;
import org.eclipse.wst.server.core.IServer;
import org.eclipse.wst.server.core.ServerCore;
import org.eclipse.wst.server.core.ServerUtil;
import org.osgi.framework.Bundle;
/**
*
*/
public class PreviewLaunchConfigurationDelegate extends LaunchConfigurationDelegate {
private static final String[] REQUIRED_BUNDLE_IDS = new String[] {
"javax.servlet",
"javax.servlet.jsp",
"org.mortbay.jetty.server",
"org.mortbay.jetty.util",
"org.eclipse.wst.server.preview"
};
private static final String[] fgCandidateJavaFiles = {"javaw", "javaw.exe", "java",
"java.exe", "j9w", "j9w.exe", "j9", "j9.exe"};
private static final String[] fgCandidateJavaLocations = {"bin" + File.separatorChar,
"jre" + File.separatorChar + "bin" + File.separatorChar};
private static final String MAIN_CLASS = "org.eclipse.wst.server.preview.internal.PreviewStarter";
public void launch(ILaunchConfiguration configuration, String mode, ILaunch launch, IProgressMonitor monitor) throws CoreException {
IServer server = ServerUtil.getServer(configuration);
if (server == null) {
Trace.trace(Trace.FINEST, "Launch configuration could not find server");
// throw CoreException();
return;
}
if (server.shouldPublish() && ServerCore.isAutoPublishing())
server.publish(IServer.PUBLISH_INCREMENTAL, monitor);
PreviewServerBehaviour previewServer = (PreviewServerBehaviour) server.loadAdapter(PreviewServerBehaviour.class, null);
StringBuffer cp = new StringBuffer();
int size = REQUIRED_BUNDLE_IDS.length;
for (int i = 0; i < size; i++) {
Bundle b = Platform.getBundle(REQUIRED_BUNDLE_IDS[i]);
IPath path = null;
if (b != null)
path = PreviewRuntime.getJarredPluginPath(b);
if (path == null)
throw new CoreException(new Status(IStatus.ERROR, PreviewPlugin.PLUGIN_ID, "Could not find required bundle " + REQUIRED_BUNDLE_IDS[i]));
// run from workbench support
if (i == 4 && path.append("bin").toFile().exists())
path = path.append("bin");
if (i > 0)
cp.append(File.pathSeparator);
cp.append(path.toOSString());
}
List<String> cmds = new ArrayList<String>();
// jre
File java = getJavaExecutable();
if (java == null)
throw new CoreException(new Status(IStatus.ERROR, PreviewPlugin.PLUGIN_ID, "Could not find JRE executable"));
cmds.add(java.getAbsolutePath());
cmds.add("-classpath");
cmds.add(cp.toString());
cmds.add(MAIN_CLASS);
cmds.add(previewServer.getTempDirectory().append("preview.xml").toOSString());
//setDefaultSourceLocator(launch, configuration);
// launch the configuration
previewServer.setupLaunch(launch, mode, monitor);
try {
String[] cmdLine = new String[cmds.size()];
cmds.toArray(cmdLine);
Process p = DebugPlugin.exec(cmdLine, null);
if (p != null) {
IProcess pr = DebugPlugin.newProcess(launch, p, cmdLine[0]);
pr.setAttribute(IProcess.ATTR_CMDLINE, renderCommandLine(cmdLine));
launch.addProcess(pr);
previewServer.addProcessListener(pr);
}
} catch (Exception e) {
Trace.trace(Trace.SEVERE, "Problem creating preview process");
}
}
/**
* Prepares the command line from the specified array of strings.
*
* @param commandLine
* @return the command line string
*/
protected static String renderCommandLine(String[] commandLine) {
if (commandLine.length < 1)
return ""; //$NON-NLS-1$
StringBuffer buf= new StringBuffer();
for (int i= 0; i < commandLine.length; i++) {
buf.append(' ');
char[] characters= commandLine[i].toCharArray();
StringBuffer command= new StringBuffer();
boolean containsSpace= false;
for (int j = 0; j < characters.length; j++) {
char character= characters[j];
if (character == '\"') {
command.append('\\');
} else if (character == ' ') {
containsSpace = true;
}
command.append(character);
}
if (containsSpace) {
buf.append('\"');
buf.append(command.toString());
buf.append('\"');
} else {
buf.append(command.toString());
}
}
return buf.toString();
}
protected static File getJavaExecutable() {
// do not detect on the Mac OS
if (Platform.getOS().equals(Constants.OS_MACOSX))
return null;
// retrieve the 'java.home' system property. If that directory doesn't exist, return null
File javaHome;
try {
javaHome = new File(System.getProperty("java.home")).getCanonicalFile();
} catch (IOException e) {
return null;
}
if (!javaHome.exists())
return null;
// find the 'java' executable file under the java home directory. If it can't be
// found, return null
return findJavaExecutable(javaHome);
}
protected static File findJavaExecutable(File vmInstallLocation) {
// try each candidate in order, the first one found wins. Thus, the order
// of fgCandidateJavaLocations and fgCandidateJavaFiles is significant
for (int i = 0; i < fgCandidateJavaFiles.length; i++) {
for (int j = 0; j < fgCandidateJavaLocations.length; j++) {
File javaFile = new File(vmInstallLocation, fgCandidateJavaLocations[j] + fgCandidateJavaFiles[i]);
if (javaFile.isFile()) {
return javaFile;
}
}
}
return null;
}
}