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.camel.processor; 018 019 import org.apache.camel.Exchange; 020 import org.apache.camel.Processor; 021 import org.apache.commons.logging.Log; 022 import org.apache.commons.logging.LogFactory; 023 024 /** 025 * A {@link Processor} which just logs to a {@link Log} object which can be used 026 * as an exception handler instead of using a dead letter queue. 027 * 028 * @version $Revision: 35332 $ 029 */ 030 public class Logger implements Processor { 031 private Log log; 032 private LoggingLevel level; 033 034 public Logger() { 035 this(LogFactory.getLog(Logger.class)); 036 } 037 038 public Logger(Log log) { 039 this(log, LoggingLevel.INFO); 040 } 041 042 public Logger(Log log, LoggingLevel level) { 043 this.log = log; 044 this.level = level; 045 } 046 047 public Logger(String logName) { 048 this(LogFactory.getLog(logName)); 049 } 050 051 public Logger(String logName, LoggingLevel level) { 052 this(LogFactory.getLog(logName), level); 053 } 054 055 @Override 056 public String toString() { 057 return "Logger[" + log + "]"; 058 } 059 060 public void process(Exchange exchange) { 061 switch (level) { 062 case DEBUG: 063 if (log.isDebugEnabled()) { 064 log.debug(logMessage(exchange)); 065 } 066 break; 067 case ERROR: 068 if (log.isErrorEnabled()) { 069 log.error(logMessage(exchange)); 070 } 071 break; 072 case FATAL: 073 if (log.isFatalEnabled()) { 074 log.fatal(logMessage(exchange)); 075 } 076 break; 077 case INFO: 078 if (log.isInfoEnabled()) { 079 log.info(logMessage(exchange)); 080 } 081 break; 082 case TRACE: 083 if (log.isTraceEnabled()) { 084 log.trace(logMessage(exchange)); 085 } 086 break; 087 case WARN: 088 if (log.isWarnEnabled()) { 089 log.warn(logMessage(exchange)); 090 } 091 break; 092 default: 093 log.error("Unknown level: " + level + " when trying to log exchange: " + logMessage(exchange)); 094 } 095 } 096 097 public void log(String message) { 098 switch (level) { 099 case DEBUG: 100 if (log.isDebugEnabled()) { 101 log.debug(message); 102 } 103 break; 104 case ERROR: 105 if (log.isErrorEnabled()) { 106 log.error(message); 107 } 108 break; 109 case FATAL: 110 if (log.isFatalEnabled()) { 111 log.fatal(message); 112 } 113 break; 114 case INFO: 115 if (log.isInfoEnabled()) { 116 log.debug(message); 117 } 118 break; 119 case TRACE: 120 if (log.isTraceEnabled()) { 121 log.trace(message); 122 } 123 break; 124 case WARN: 125 if (log.isWarnEnabled()) { 126 log.warn(message); 127 } 128 break; 129 default: 130 log.error("Unknown level: " + level + " when trying to log exchange: " + message); 131 } 132 } 133 134 public void log(String message, Throwable exception) { 135 switch (level) { 136 case DEBUG: 137 if (log.isDebugEnabled()) { 138 log.debug(message, exception); 139 } 140 break; 141 case ERROR: 142 if (log.isErrorEnabled()) { 143 log.error(message, exception); 144 } 145 break; 146 case FATAL: 147 if (log.isFatalEnabled()) { 148 log.fatal(message, exception); 149 } 150 break; 151 case INFO: 152 if (log.isInfoEnabled()) { 153 log.debug(message, exception); 154 } 155 break; 156 case TRACE: 157 if (log.isTraceEnabled()) { 158 log.trace(message, exception); 159 } 160 break; 161 case WARN: 162 if (log.isWarnEnabled()) { 163 log.warn(message, exception); 164 } 165 break; 166 default: 167 log.error("Unknown level: " + level + " when trying to log exchange: " + message, exception); 168 } 169 } 170 171 protected Object logMessage(Exchange exchange) { 172 return exchange; 173 } 174 175 public Log getLog() { 176 return log; 177 } 178 179 public void setLog(Log log) { 180 this.log = log; 181 } 182 183 public LoggingLevel getLevel() { 184 return level; 185 } 186 187 public void setLevel(LoggingLevel level) { 188 this.level = level; 189 } 190 }