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 @Override 052 public void error(final String msg) { 053 final long current = System.currentTimeMillis(); 054 if (lastException + EXCEPTION_INTERVAL < current || exceptionCount++ < MAX_EXCEPTIONS) { 055 LOGGER.error(msg); 056 } 057 lastException = current; 058 } 059 060 /** 061 * Handle an error with a message and an exception. 062 * @param msg The message. 063 * @param t The Throwable. 064 */ 065 @Override 066 public void error(final String msg, final Throwable t) { 067 final long current = System.currentTimeMillis(); 068 if (lastException + EXCEPTION_INTERVAL < current || exceptionCount++ < MAX_EXCEPTIONS) { 069 LOGGER.error(msg, t); 070 } 071 lastException = current; 072 if (!appender.isExceptionSuppressed() && t != null && !(t instanceof AppenderRuntimeException)) { 073 throw new AppenderRuntimeException(msg, t); 074 } 075 } 076 077 /** 078 * Handle an error with a message, and exception and a logging event. 079 * @param msg The message. 080 * @param event The LogEvent. 081 * @param t The Throwable. 082 */ 083 @Override 084 public void error(final String msg, final LogEvent event, final Throwable t) { 085 final long current = System.currentTimeMillis(); 086 if (lastException + EXCEPTION_INTERVAL < current || exceptionCount++ < MAX_EXCEPTIONS) { 087 LOGGER.error(msg, t); 088 } 089 lastException = current; 090 if (!appender.isExceptionSuppressed() && t != null && !(t instanceof AppenderRuntimeException)) { 091 throw new AppenderRuntimeException(msg, t); 092 } 093 } 094 }