/*
* The MIT License
*
* Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package hudson.triggers;
import org.acegisecurity.context.SecurityContext;
import org.acegisecurity.context.SecurityContextHolder;
import java.util.Timer;
import java.util.TimerTask;
import java.util.logging.Logger;
import java.util.logging.Level;
import hudson.security.ACL;
/**
* {@link Timer} wrapper so that a fatal error in {@link TimerTask}
* won't terminate the timer.
*
* <p>
* {@link Trigger#timer} is a shared timer instance that can be used inside Hudson to
* schedule a recurring work.
*
* @author Kohsuke Kawaguchi
* @since 1.124
* @see Trigger#timer
*/
public abstract class SafeTimerTask extends TimerTask {
public final void run() {
// background activity gets system credential,
// just like executors get it.
SecurityContext oldContext = ACL.impersonate(ACL.SYSTEM);
try {
doRun();
} catch(Throwable t) {
LOGGER.log(Level.SEVERE, "Timer task "+this+" failed",t);
} finally {
SecurityContextHolder.setContext(oldContext);
}
}
protected abstract void doRun() throws Exception;
private static final Logger LOGGER = Logger.getLogger(SafeTimerTask.class.getName());
}