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.impl.ServiceSupport; 022 import org.apache.camel.util.ServiceHelper; 023 import org.apache.commons.logging.Log; 024 import org.apache.commons.logging.LogFactory; 025 026 /** 027 * An {@link ErrorHandler} which uses commons-logging to dump the error 028 * 029 * @version $Revision: 35332 $ 030 */ 031 public class LoggingErrorHandler extends ErrorHandlerSupport { 032 private Processor output; 033 private Log log; 034 private LoggingLevel level; 035 036 public LoggingErrorHandler(Processor output) { 037 this(output, LogFactory.getLog(LoggingErrorHandler.class), LoggingLevel.INFO); 038 } 039 040 public LoggingErrorHandler(Processor output, Log log, LoggingLevel level) { 041 this.output = output; 042 this.log = log; 043 this.level = level; 044 } 045 046 @Override 047 public String toString() { 048 return "LoggingErrorHandler[" + output + "]"; 049 } 050 051 public void process(Exchange exchange) throws Exception { 052 try { 053 output.process(exchange); 054 } catch (Throwable e) { 055 if (!customProcessorForException(exchange, e)) { 056 logError(exchange, e); 057 } 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, Throwable 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), 123 e); 124 } 125 } 126 127 protected Object logMessage(Exchange exchange, Throwable e) { 128 return e + " while processing exchange: " + exchange; 129 } 130 131 protected void doStart() throws Exception { 132 ServiceHelper.startServices(output); 133 } 134 135 protected void doStop() throws Exception { 136 ServiceHelper.stopServices(output); 137 } 138 }