alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Spring Framework example source code file (JamonPerformanceMonitorInterceptor.java)

This example Spring Framework source code file (JamonPerformanceMonitorInterceptor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

abstractmonitoringinterceptor, jamon, jamon, jamonperformancemonitorinterceptor, jamonperformancemonitorinterceptor, log, log, monitor, object, object, string, throwable

The Spring Framework JamonPerformanceMonitorInterceptor.java source code

/*
 * Copyright 2002-2006 the original author or authors.
 *
 * Licensed 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.springframework.aop.interceptor;

import com.jamonapi.Monitor;
import com.jamonapi.MonitorFactory;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.commons.logging.Log;

/**
 * Performance monitor interceptor that uses <b>JAMon library
 * to perform the performance measurement on the intercepted method
 * and output the stats.
 *
 * <p>This code is inspired by Thierry Templier's blog.
 * 
 * @author Dmitriy Kopylenko
 * @author Juergen Hoeller
 * @author Rob Harrop
 * @since 1.1.3
 * @see com.jamonapi.MonitorFactory
 * @see PerformanceMonitorInterceptor
 */
public class JamonPerformanceMonitorInterceptor extends AbstractMonitoringInterceptor {

	private boolean trackAllInvocations = false;


	/**
	 * Create a new JamonPerformanceMonitorInterceptor with a static logger.
	 */
	public JamonPerformanceMonitorInterceptor() {
	}

	/**
	 * Create a new JamonPerformanceMonitorInterceptor with a dynamic or static logger,
	 * according to the given flag.
	 * @param useDynamicLogger whether to use a dynamic logger or a static logger
	 * @see #setUseDynamicLogger
	 */
	public JamonPerformanceMonitorInterceptor(boolean useDynamicLogger) {
		setUseDynamicLogger(useDynamicLogger);
	}

	/**
	 * Create a new JamonPerformanceMonitorInterceptor with a dynamic or static logger,
	 * according to the given flag.
	 * @param useDynamicLogger whether to use a dynamic logger or a static logger
	 * @param trackAllInvocations whether to track all invocations that go through
	 * this interceptor, or just invocations with trace logging enabled
	 * @see #setUseDynamicLogger
	 */
	public JamonPerformanceMonitorInterceptor(boolean useDynamicLogger, boolean trackAllInvocations) {
		setUseDynamicLogger(useDynamicLogger);
		setTrackAllInvocations(trackAllInvocations);
	}


	/**
	 * Set whether to track all invocations that go through this interceptor,
	 * or just invocations with trace logging enabled.
	 * <p>Default is "false": Only invocations with trace logging enabled will
	 * be monitored. Specify "true" to let JAMon track all invocations,
	 * gathering statistics even when trace logging is disabled.
	 */
	public void setTrackAllInvocations(boolean trackAllInvocations) {
		this.trackAllInvocations = trackAllInvocations;
	}


	/**
	 * Always applies the interceptor if the "trackAllInvocations" flag has been set;
	 * else just kicks in if the log is enabled.
	 * @see #setTrackAllInvocations
	 * @see #isLogEnabled
	 */
	protected boolean isInterceptorEnabled(MethodInvocation invocation, Log logger) {
		return (this.trackAllInvocations || isLogEnabled(logger));
	}

	/**
	 * Wraps the invocation with a JAMon Monitor and writes the current
	 * performance statistics to the log (if enabled).
	 * @see com.jamonapi.MonitorFactory#start
	 * @see com.jamonapi.Monitor#stop
	 */
	protected Object invokeUnderTrace(MethodInvocation invocation, Log logger) throws Throwable {
		String name = createInvocationTraceName(invocation);
		Monitor monitor = MonitorFactory.start(name);
		try {
			return invocation.proceed();
		}
		finally {
			monitor.stop();
			if (!this.trackAllInvocations || isLogEnabled(logger)) {
				logger.trace("JAMon performance statistics for method [" + name + "]:\n" + monitor);
			}
		}
	}

}

Other Spring Framework examples (source code examples)

Here is a short list of links related to this Spring Framework JamonPerformanceMonitorInterceptor.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.