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.interceptor;
018
019 import org.apache.camel.Exchange;
020 import org.apache.camel.Predicate;
021 import org.apache.camel.Processor;
022 import org.apache.camel.model.ProcessorType;
023 import org.apache.camel.processor.DelegateProcessor;
024 import org.apache.camel.processor.Logger;
025 import org.apache.camel.processor.LoggingLevel;
026 import org.apache.commons.logging.Log;
027 import org.apache.commons.logging.LogFactory;
028
029 /**
030 * An interceptor for debugging and tracing routes
031 *
032 * @version $Revision: 669650 $
033 */
034 public class TraceInterceptor extends DelegateProcessor implements ExchangeFormatter {
035 private final ProcessorType node;
036 private Predicate traceFilter;
037 private boolean traceExceptions = true;
038 private Logger logger = new Logger(LogFactory.getLog(TraceInterceptor.class), this);
039 private TraceFormatter formatter;
040
041 public TraceInterceptor(ProcessorType node, Processor target, TraceFormatter formatter) {
042 super(target);
043 this.node = node;
044 this.formatter = formatter;
045 }
046
047 @Override
048 public String toString() {
049 return "TraceInterceptor[" + node + "]";
050 }
051
052 public void process(Exchange exchange) throws Exception {
053 try {
054 if (shouldLogExchange(exchange)) {
055 logExchange(exchange);
056 }
057 super.proceed(exchange);
058 } catch (Exception e) {
059 logException(exchange, e);
060 throw e;
061 } catch (Error e) {
062 logException(exchange, e);
063 throw e;
064 }
065 }
066
067 public Object format(Exchange exchange) {
068 return formatter.format(this, exchange);
069 }
070
071 // Properties
072 //-------------------------------------------------------------------------
073 public ProcessorType getNode() {
074 return node;
075 }
076
077 public Predicate getTraceFilter() {
078 return traceFilter;
079 }
080
081 public void setTraceFilter(Predicate traceFilter) {
082 this.traceFilter = traceFilter;
083 }
084
085 public boolean isTraceExceptions() {
086 return traceExceptions;
087 }
088
089 public void setTraceExceptions(boolean traceExceptions) {
090 this.traceExceptions = traceExceptions;
091 }
092
093 public Logger getLogger() {
094 return logger;
095 }
096
097 public TraceFormatter getFormatter() {
098 return formatter;
099 }
100
101 public void setFormatter(TraceFormatter formatter) {
102 this.formatter = formatter;
103 }
104
105 public LoggingLevel getLevel() {
106 return getLogger().getLevel();
107 }
108
109 public Log getLog() {
110 return getLogger().getLog();
111 }
112
113 public void setLog(Log log) {
114 getLogger().setLog(log);
115 }
116
117 public void setLevel(LoggingLevel level) {
118 getLogger().setLevel(level);
119 }
120
121 // Implementation methods
122 //-------------------------------------------------------------------------
123 protected void logExchange(Exchange exchange) {
124 logger.process(exchange);
125 }
126
127 protected void logException(Exchange exchange, Throwable throwable) {
128 logger.process(exchange, throwable);
129 }
130
131
132 /**
133 * Returns true if the given exchange should be logged in the trace list
134 */
135 protected boolean shouldLogExchange(Exchange exchange) {
136 return traceFilter == null || traceFilter.matches(exchange);
137 }
138
139 }