/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.tools.ant.taskdefs;
import org.apache.tools.ant.AntClassLoader;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.Commandline;
import org.apache.tools.ant.types.CommandlineJava;
import org.apache.tools.ant.types.Path;
import org.apache.tools.ant.util.TimeoutObserver;
import org.apache.tools.ant.util.Watchdog;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.io.PrintStream;
/**
*
* @author thomas.haas@softwired-inc.com
* @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
* @since Ant 1.2
*/
public class ExecuteJava implements Runnable, TimeoutObserver {
private Commandline javaCommand = null;
private Path classpath = null;
private CommandlineJava.SysProperties sysProperties = null;
private Method main = null;
private Long timeout = null;
private Throwable caught = null;
private boolean timedOut = false;
private Thread thread = null;
public void setJavaCommand(Commandline javaCommand) {
this.javaCommand = javaCommand;
}
/**
* Set the classpath to be used when running the Java class
*
* @param p an Ant Path object containing the classpath.
*/
public void setClasspath(Path p) {
classpath = p;
}
public void setSystemProperties(CommandlineJava.SysProperties s) {
sysProperties = s;
}
/**
* All output (System.out as well as System.err) will be written
* to this Stream.
*
* @deprecated manage output at the task level
*/
public void setOutput(PrintStream out) {
}
/**
* @since 1.19, Ant 1.5
*/
public void setTimeout(Long timeout) {
this.timeout = timeout;
}
public void execute(Project project) throws BuildException{
final String classname = javaCommand.getExecutable();
AntClassLoader loader = null;
try {
if (sysProperties != null) {
sysProperties.setSystem();
}
final Class[] param = { Class.forName("[Ljava.lang.String;") };
Class target = null;
if (classpath == null) {
target = Class.forName(classname);
} else {
loader = new AntClassLoader(project.getCoreLoader(), project,
classpath, false);
loader.setIsolated(true);
loader.setThreadContextLoader();
target = loader.forceLoadClass(classname);
AntClassLoader.initializeClass(target);
}
main = target.getMethod("main", param);
if (main == null) {
throw new BuildException("Could not find main() method in "
+ classname);
}
if (timeout == null) {
run();
} else {
thread = new Thread(this, "ExecuteJava");
Task currentThreadTask
= project.getThreadTask(Thread.currentThread());
project.registerThreadTask(thread, currentThreadTask);
// if we run into a timout, the run-away thread shall not
// make the VM run forever - if no timeout occurs, Ant's
// main thread will still be there to let the new thread
// finish
thread.setDaemon(true);
Watchdog w = new Watchdog(timeout.longValue());
w.addTimeoutObserver(this);
synchronized (this) {
thread.start();
w.start();
try {
wait();
} catch (InterruptedException e) {}
if (timedOut) {
project.log("Timeout: sub-process interrupted",
Project.MSG_WARN);
} else {
thread = null;
w.stop();
}
}
}
if (caught != null) {
throw caught;
}
} catch (ClassNotFoundException e) {
throw new BuildException("Could not find " + classname + "."
+ " Make sure you have it in your"
+ " classpath");
} catch (SecurityException e) {
throw e;
} catch (Throwable e) {
throw new BuildException(e);
} finally {
if (loader != null) {
loader.resetThreadContextLoader();
loader.cleanup();
}
if (sysProperties != null) {
sysProperties.restoreSystem();
}
}
}
/**
* @since 1.19, Ant 1.5
*/
public void run() {
final Object[] argument = { javaCommand.getArguments() };
try {
main.invoke(null, argument);
} catch (InvocationTargetException e) {
Throwable t = e.getTargetException();
if (!(t instanceof InterruptedException)) {
caught = t;
} /* else { swallow, probably due to timeout } */
} catch (Throwable t) {
caught = t;
} finally {
synchronized (this) {
notifyAll();
}
}
}
/**
* @since 1.19, Ant 1.5
*/
public synchronized void timeoutOccured(Watchdog w) {
if (thread != null) {
timedOut = true;
thread.interrupt();
}
notifyAll();
}
/**
* @since 1.19, Ant 1.5
*/
public boolean killedProcess() {
return timedOut;
}
}