/*
* The MIT License
*
* Copyright 2015 Jesse Glick.
*
* 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 jenkins.util;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Executor service that logs otherwise uncaught errors.
* TODO is there anything in Guava for this?
*/
class ErrorLoggingScheduledThreadPoolExecutor extends ScheduledThreadPoolExecutor {
private static final Logger LOGGER = Logger.getLogger(ErrorLoggingScheduledThreadPoolExecutor.class.getName());
ErrorLoggingScheduledThreadPoolExecutor(int corePoolSize) {
super(corePoolSize);
}
ErrorLoggingScheduledThreadPoolExecutor(int corePoolSize, ThreadFactory threadFactory) {
super(corePoolSize, threadFactory);
}
ErrorLoggingScheduledThreadPoolExecutor(int corePoolSize, RejectedExecutionHandler handler) {
super(corePoolSize, handler);
}
ErrorLoggingScheduledThreadPoolExecutor(int corePoolSize, ThreadFactory threadFactory, RejectedExecutionHandler handler) {
super(corePoolSize, threadFactory, handler);
}
@Override protected void afterExecute(Runnable r, Throwable t) {
super.afterExecute(r, t);
if (t == null && r instanceof Future<?>) {
Future<?> f = (Future<?>) r;
if (f.isDone()) { // TODO super Javadoc does not suggest this, but without it, we hang in FutureTask.awaitDone!
try {
f.get(/* just to be on the safe side, do not wait */0, TimeUnit.NANOSECONDS);
} catch (TimeoutException x) {
// should not happen, right?
} catch (CancellationException x) {
// probably best to ignore this
} catch (ExecutionException x) {
t = x.getCause();
} catch (InterruptedException x) {
Thread.currentThread().interrupt();
}
}
}
if (t != null) {
LOGGER.log(Level.WARNING, "failure in task not wrapped in SafeTimerTask", t);
}
}
}