/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.management;
import org.apache.camel.AsyncCallback;
import org.apache.camel.AsyncProcessor;
import org.apache.camel.Exchange;
import org.apache.camel.processor.DelegateProcessor;
import org.apache.camel.util.AsyncProcessorHelper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* JMX enabled processor that uses the {@link Counter} for instrumenting
* processing of exchanges.
*
* @version $Revision: 699782 $
*/
public class InstrumentationProcessor extends DelegateProcessor implements AsyncProcessor {
private static final transient Log LOG = LogFactory.getLog(InstrumentationProcessor.class);
private PerformanceCounter counter;
public InstrumentationProcessor(PerformanceCounter counter) {
this.counter = counter;
}
public InstrumentationProcessor() {
}
public void setCounter(PerformanceCounter counter) {
this.counter = counter;
}
public void process(Exchange exchange) throws Exception {
AsyncProcessorHelper.process(this, exchange);
}
public boolean process(final Exchange exchange, final AsyncCallback callback) {
if (processor == null) {
// no processor so nothing to process, so return
callback.done(true);
return true;
}
final long startTime = System.nanoTime();
if (processor instanceof AsyncProcessor) {
return ((AsyncProcessor)processor).process(exchange, new AsyncCallback() {
public void done(boolean doneSynchronously) {
if (counter != null) {
// convert nanoseconds to milliseconds
recordTime(exchange, (System.nanoTime() - startTime) / 1000000.0);
}
callback.done(doneSynchronously);
}
});
}
try {
processor.process(exchange);
} catch (Throwable e) {
exchange.setException(e);
}
if (counter != null) {
// convert nanoseconds to milliseconds
recordTime(exchange, (System.nanoTime() - startTime) / 1000000.0);
}
callback.done(true);
return true;
}
protected void recordTime(Exchange exchange, double duration) {
if (LOG.isTraceEnabled()) {
LOG.trace("Recording duration: " + duration + " millis for exchange: " + exchange);
}
if (!exchange.isFailed() && exchange.getException() == null) {
counter.completedExchange(duration);
} else {
counter.failedExchange();
}
}
}