001/* 002 * jPOS Project [http://jpos.org] 003 * Copyright (C) 2000-2023 jPOS Software SRL 004 * 005 * This program is free software: you can redistribute it and/or modify 006 * it under the terms of the GNU Affero General Public License as 007 * published by the Free Software Foundation, either version 3 of the 008 * License, or (at your option) any later version. 009 * 010 * This program is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 013 * GNU Affero General Public License for more details. 014 * 015 * You should have received a copy of the GNU Affero General Public License 016 * along with this program. If not, see <http://www.gnu.org/licenses/>. 017 */ 018 019package org.jpos.util; 020 021/** 022 * A specific log listener that filters all LogEvents that doesn't 023 * contain any exception. 024 * @author Alejandro Revilla 025 * @version $Revision$ $Date$ 026 */ 027public class ExceptionLogFilter implements LogListener { 028 public ExceptionLogFilter () { 029 super(); 030 } 031 public synchronized LogEvent log (LogEvent evt) { 032 synchronized (evt.getPayLoad()) { 033 for (Object o : evt.getPayLoad()) { 034 if (o instanceof Throwable) 035 return evt; 036 } 037 } 038 return null; 039 } 040} 041