/***************************************************************************
* Copyright 2006-2016 by Christian Ihle *
* contact@kouchat.net *
* *
* This file is part of KouChat. *
* *
* KouChat is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 3 of *
* the License, or (at your option) any later version. *
* *
* KouChat is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with KouChat. *
* If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
package net.usikkert.kouchat.util;
import java.util.ArrayList;
import java.util.Collection;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This class will register itself as the default uncaught
* exception handler, and log any uncaught exceptions.
*
* <p>If any listeners are registered, they will be notified
* when the logging is done.</p>
*
* @author Christian Ihle
*/
public class UncaughtExceptionLogger implements Thread.UncaughtExceptionHandler {
/** The logger. */
private static final Logger LOG = Logger.getLogger(UncaughtExceptionLogger.class.getName());
/** The listeners being notified of uncaught exceptions. */
private final Collection<UncaughtExceptionListener> listeners;
/**
* Default constructor. Registers this class as the
* default uncaught exception handler.
*/
public UncaughtExceptionLogger() {
Thread.setDefaultUncaughtExceptionHandler(this);
listeners = new ArrayList<UncaughtExceptionListener>();
}
/**
* Logs the exception with information about which thread
* the exception happened in, and notifies listeners.
*
* @param thread The thread that got the exception.
* @param throwable The exception the thread got.
*/
@Override
public void uncaughtException(final Thread thread, final Throwable throwable) {
LOG.log(Level.SEVERE, "UncaughtException in thread: " + thread.getName() +
" (id " + thread.getId() + ", priority " + thread.getPriority() + ")", throwable);
for (final UncaughtExceptionListener listener : listeners) {
listener.uncaughtException(thread, throwable);
}
}
/**
* Registers a new uncaught exceptions listener.
*
* @param listener The listener to register.
*/
public void registerUncaughtExceptionListener(final UncaughtExceptionListener listener) {
listeners.add(listener);
}
}