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.camel.util.ServiceHelper; 022 import org.apache.commons.logging.Log; 023 import org.apache.commons.logging.LogFactory; 024 025 /** 026 * An {@link ErrorHandler} which uses commons-logging to dump the error 027 * 028 * @version $Revision: 659842 $ 029 */ 030 public class LoggingErrorHandler extends ErrorHandlerSupport { 031 private Processor output; 032 private Log log; 033 private LoggingLevel level; 034 035 public LoggingErrorHandler(Processor output) { 036 this(output, LogFactory.getLog(LoggingErrorHandler.class), LoggingLevel.INFO); 037 } 038 039 public LoggingErrorHandler(Processor output, Log log, LoggingLevel level) { 040 this.output = output; 041 this.log = log; 042 this.level = level; 043 } 044 045 @Override 046 public String toString() { 047 return "LoggingErrorHandler[" + output + "]"; 048 } 049 050 public void process(Exchange exchange) throws Exception { 051 try { 052 output.process(exchange); 053 } catch (Throwable e) { 054 if (!customProcessorForException(exchange, e)) { 055 logError(exchange, e); 056 } 057 } 058 } 059 060 // Properties 061 // ------------------------------------------------------------------------- 062 063 /** 064 * Returns the output processor 065 */ 066 public Processor getOutput() { 067 return output; 068 } 069 070 public LoggingLevel getLevel() { 071 return level; 072 } 073 074 public void setLevel(LoggingLevel level) { 075 this.level = level; 076 } 077 078 public Log getLog() { 079 return log; 080 } 081 082 public void setLog(Log log) { 083 this.log = log; 084 } 085 086 // Implementation methods 087 // ------------------------------------------------------------------------- 088 protected void logError(Exchange exchange, Throwable e) { 089 switch (level) { 090 case DEBUG: 091 if (log.isDebugEnabled()) { 092 log.debug(logMessage(exchange, e), e); 093 } 094 break; 095 case ERROR: 096 if (log.isErrorEnabled()) { 097 log.error(logMessage(exchange, e), e); 098 } 099 break; 100 case FATAL: 101 if (log.isFatalEnabled()) { 102 log.fatal(logMessage(exchange, e), e); 103 } 104 break; 105 case INFO: 106 if (log.isInfoEnabled()) { 107 log.debug(logMessage(exchange, e), e); 108 } 109 break; 110 case TRACE: 111 if (log.isTraceEnabled()) { 112 log.trace(logMessage(exchange, e), e); 113 } 114 break; 115 case WARN: 116 if (log.isWarnEnabled()) { 117 log.warn(logMessage(exchange, e), e); 118 } 119 break; 120 default: 121 log.error("Unknown level: " + level + " when trying to log exchange: " + logMessage(exchange, e), 122 e); 123 } 124 } 125 126 protected Object logMessage(Exchange exchange, Throwable 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 }