001 /** 002 * 003 * Licensed to the Apache Software Foundation (ASF) under one or more 004 * contributor license agreements. See the NOTICE file distributed with 005 * this work for additional information regarding copyright ownership. 006 * The ASF licenses this file to You under the Apache License, Version 2.0 007 * (the "License"); you may not use this file except in compliance with 008 * the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 package org.apache.camel.processor; 019 020 import org.apache.camel.Exchange; 021 import org.apache.camel.Processor; 022 import org.apache.camel.impl.ServiceSupport; 023 import org.apache.camel.util.ServiceHelper; 024 import org.apache.commons.logging.Log; 025 import org.apache.commons.logging.LogFactory; 026 027 /** 028 * An {@link ErrorHandler} which uses commons-logging to dump the error 029 * 030 * @version $Revision: 534145 $ 031 */ 032 public class LoggingErrorHandler extends ServiceSupport implements ErrorHandler { 033 private Processor output; 034 private Log log; 035 private LoggingLevel level; 036 037 public LoggingErrorHandler(Processor output) { 038 this(output, LogFactory.getLog(LoggingErrorHandler.class), LoggingLevel.INFO); 039 } 040 041 public LoggingErrorHandler(Processor output, Log log, LoggingLevel level) { 042 this.output = output; 043 this.log = log; 044 this.level = level; 045 } 046 047 @Override 048 public String toString() { 049 return "LoggingErrorHandler[" + output + "]"; 050 } 051 052 public void process(Exchange exchange) throws Exception { 053 try { 054 output.process(exchange); 055 } 056 catch (RuntimeException e) { 057 logError(exchange, e); 058 } 059 } 060 061 // Properties 062 //------------------------------------------------------------------------- 063 064 /** 065 * Returns the output processor 066 */ 067 public Processor getOutput() { 068 return output; 069 } 070 071 public LoggingLevel getLevel() { 072 return level; 073 } 074 075 public void setLevel(LoggingLevel level) { 076 this.level = level; 077 } 078 079 public Log getLog() { 080 return log; 081 } 082 083 public void setLog(Log log) { 084 this.log = log; 085 } 086 087 // Implementation methods 088 //------------------------------------------------------------------------- 089 protected void logError(Exchange exchange, RuntimeException e) { 090 switch (level) { 091 case DEBUG: 092 if (log.isDebugEnabled()) { 093 log.debug(logMessage(exchange, e), e); 094 } 095 break; 096 case ERROR: 097 if (log.isErrorEnabled()) { 098 log.error(logMessage(exchange, e), e); 099 } 100 break; 101 case FATAL: 102 if (log.isFatalEnabled()) { 103 log.fatal(logMessage(exchange, e), e); 104 } 105 break; 106 case INFO: 107 if (log.isInfoEnabled()) { 108 log.debug(logMessage(exchange, e), e); 109 } 110 break; 111 case TRACE: 112 if (log.isTraceEnabled()) { 113 log.trace(logMessage(exchange, e), e); 114 } 115 break; 116 case WARN: 117 if (log.isWarnEnabled()) { 118 log.warn(logMessage(exchange, e), e); 119 } 120 break; 121 default: 122 log.error("Unknown level: " + level + " when trying to log exchange: " + logMessage(exchange, e), e); 123 } 124 } 125 126 protected Object logMessage(Exchange exchange, RuntimeException e) { 127 return e + " while processing exchange: " + exchange; 128 } 129 130 protected void doStart() throws Exception { 131 ServiceHelper.startServices(output); 132 } 133 134 protected void doStop() throws Exception { 135 ServiceHelper.stopServices(output); 136 } 137 }