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.management;
018
019 import org.apache.camel.AsyncCallback;
020 import org.apache.camel.Exchange;
021 import org.apache.camel.api.management.PerformanceCounter;
022 import org.apache.camel.management.mbean.ManagedPerformanceCounter;
023 import org.apache.camel.processor.DelegateAsyncProcessor;
024 import org.apache.camel.util.StopWatch;
025 import org.slf4j.Logger;
026 import org.slf4j.LoggerFactory;
027
028 /**
029 * JMX enabled processor that uses the {@link org.apache.camel.management.mbean.ManagedCounter} for instrumenting
030 * processing of exchanges.
031 *
032 * @version
033 */
034 public class InstrumentationProcessor extends DelegateAsyncProcessor {
035
036 private static final Logger LOG = LoggerFactory.getLogger(InstrumentationProcessor.class);
037 private PerformanceCounter counter;
038 private String type;
039
040 public InstrumentationProcessor() {
041 }
042
043 public InstrumentationProcessor(PerformanceCounter counter) {
044 this.counter = counter;
045 }
046
047 @Override
048 public String toString() {
049 return "Instrumentation" + (type != null ? ":" + type : "") + "[" + processor + "]";
050 }
051
052 public void setCounter(Object counter) {
053 ManagedPerformanceCounter mpc = null;
054 if (counter instanceof ManagedPerformanceCounter) {
055 mpc = (ManagedPerformanceCounter) counter;
056 }
057
058 if (this.counter instanceof DelegatePerformanceCounter) {
059 ((DelegatePerformanceCounter) this.counter).setCounter(mpc);
060 } else if (mpc != null) {
061 this.counter = mpc;
062 } else if (counter instanceof PerformanceCounter) {
063 this.counter = (PerformanceCounter) counter;
064 }
065 }
066
067 @Override
068 public boolean process(final Exchange exchange, final AsyncCallback callback) {
069 // only record time if stats is enabled
070 final StopWatch watch = (counter != null && counter.isStatisticsEnabled()) ? new StopWatch() : null;
071
072 return processor.process(exchange, new AsyncCallback() {
073 public void done(boolean doneSync) {
074 try {
075 // record end time
076 if (watch != null) {
077 recordTime(exchange, watch.stop());
078 }
079 } finally {
080 // and let the original callback know we are done as well
081 callback.done(doneSync);
082 }
083 }
084
085 @Override
086 public String toString() {
087 return InstrumentationProcessor.this.toString();
088 }
089 });
090 }
091
092 protected void recordTime(Exchange exchange, long duration) {
093 if (LOG.isTraceEnabled()) {
094 LOG.trace("{}Recording duration: {} millis for exchange: {}", new Object[]{type != null ? type + ": " : "", duration, exchange});
095 }
096
097 if (!exchange.isFailed() && exchange.getException() == null) {
098 counter.completedExchange(exchange, duration);
099 } else {
100 counter.failedExchange(exchange);
101 }
102 }
103
104 public String getType() {
105 return type;
106 }
107
108 public void setType(String type) {
109 this.type = type;
110 }
111 }