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Adding PMI (PerformanceMonitorInterceptor) to your application in 3 easy steps

· Performance Zone

Evolve your approach to Application Performance Monitoring by adopting five best practices that are outlined and explored in this e-book, brought to you in partnership with BMC.

Yesterday I found out that Spring cares about showing how fast it is, but not only that, it does make it easy for you, and without further ado let's get to business.

1. Declare the interceptor (PerformanceMonitorInterceptor) and its pointcut (declaring a pointcut) within the aspect configuration:

Save the below configuration into a config file (aop-config.xml).

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:context="http://www.springframework.org/schema/context"
  xmlns:aop="http://www.springframework.org/schema/aop"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/aop 
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/context 
       http://www.springframework.org/schema/context/spring-context.xsd">
        
 <aop:aspectj-autoproxy />
 
 <bean id="performanceMonitor" class="org.springframework.aop.interceptor.PerformanceMonitorInterceptor">
  <property name="useDynamicLogger" value="true"/>
 </bean>
 
 <aop:config>
  <aop:pointcut id="allServiceMethods" expression="execution(* com.mypackage.service..*.*(..))" />
  <aop:advisor pointcut-ref="allServiceMethods" advice-ref="performanceMonitor" order="2" />
 </aop:config>
 
</beans>

2. Include the aop-config.xml file in the spring general configuration file: 

<import resource="classpath:spring-config/aop-config.xml" />

3. And enable logging for:

log4j.logger.org.springframework.aop.interceptor.PerformanceMonitorInterceptor=TRACE

The logging has to be to TRACE in order for you to see the following:

Line 22734: 178062 ["http-bio-8079"-exec-2] TRACE org.springframework.aop.interceptor.PerformanceMonitorInterceptor  - StopWatch ' com.mypackage.service.ApplicationParametersService.getApplicationParam': running time (millis) = 12

Line 23155: 178551 ["http-bio-8079"-exec-2] TRACE org.springframework.aop.interceptor.PerformanceMonitorInterceptor  - StopWatch 'com.mypackage.service.common.PaginatedTableService.getData': running time (millis) = 467

Learn tips and best practices for optimizing your capacity management strategy with the Market Guide for Capacity Management, brought to you in partnership with BMC.

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