001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017 package org.apache.logging.log4j.core.appender; 018 019 import org.apache.logging.log4j.Logger; 020 import org.apache.logging.log4j.core.Appender; 021 import org.apache.logging.log4j.core.ErrorHandler; 022 import org.apache.logging.log4j.core.LogEvent; 023 import org.apache.logging.log4j.status.StatusLogger; 024 025 /** 026 * 027 */ 028 public class DefaultErrorHandler implements ErrorHandler { 029 030 private static final Logger LOGGER = StatusLogger.getLogger(); 031 032 private static final int MAX_EXCEPTIONS = 3; 033 034 private static final int EXCEPTION_INTERVAL = 300000; 035 036 private int exceptionCount = 0; 037 038 private long lastException; 039 040 private final Appender appender; 041 042 public DefaultErrorHandler(final Appender appender) { 043 this.appender = appender; 044 } 045 046 047 /** 048 * Handle an error with a message. 049 * @param msg The message. 050 */ 051 public void error(final String msg) { 052 final long current = System.currentTimeMillis(); 053 if (lastException + EXCEPTION_INTERVAL < current || exceptionCount++ < MAX_EXCEPTIONS) { 054 LOGGER.error(msg); 055 } 056 lastException = current; 057 } 058 059 /** 060 * Handle an error with a message and an exception. 061 * @param msg The message. 062 * @param t The Throwable. 063 */ 064 public void error(final String msg, final Throwable t) { 065 final long current = System.currentTimeMillis(); 066 if (lastException + EXCEPTION_INTERVAL < current || exceptionCount++ < MAX_EXCEPTIONS) { 067 LOGGER.error(msg, t); 068 } 069 lastException = current; 070 if (!appender.isExceptionSuppressed() && t != null) { 071 throw new AppenderRuntimeException(msg, t); 072 } 073 } 074 075 /** 076 * Handle an error with a message, and exception and a logging event. 077 * @param msg The message. 078 * @param event The LogEvent. 079 * @param t The Throwable. 080 */ 081 public void error(final String msg, final LogEvent event, final Throwable t) { 082 final long current = System.currentTimeMillis(); 083 if (lastException + EXCEPTION_INTERVAL < current || exceptionCount++ < MAX_EXCEPTIONS) { 084 LOGGER.error(msg, t); 085 } 086 lastException = current; 087 if (!appender.isExceptionSuppressed() && t != null) { 088 throw new AppenderRuntimeException(msg, t); 089 } 090 } 091 }