Skip to content

Latest commit

 

History

History
51 lines (40 loc) · 1.73 KB

README.md

File metadata and controls

51 lines (40 loc) · 1.73 KB
Raw

JavaSimon Tomcat Support

Description

Integrates JavaSimon with Tomcat and allows to monitor an application response time without modifying it.

Installation

Download and copy the following jars in Tomcat's lib folder

  • javasimon-core
  • javasimon-tomcat
  • javasimon-javaee for HTTP Valve
  • javasimon-jdbc4 for JDBC Interceptor

Configure everything in Tomcat's conf/server.xml configuration file

Lifecycle listener

This Tomcat lifecycle listener is in charge of initilizing Simon, it can

  • register system callbacks (like the JMX one) and initialize Simon
  • disable Simon monitoring
	<Listener className="org.javasimon.tomcat.SimonListener"
		callbacks="org.javasimon.jmx.JmxRegisterCallback,org.javasimon.utils.SLF4JLoggingCallback"
		enabled="true" />

Valve

This Tomcat valve aims at monitoring HTTP Requests response times. It's very similar to JavaSimon's servlet filter (for that reason javasimon-javaee.jar is required).

	<Valve className="org.javasimon.tomcat.SimonValve"
		prefix="valve"/>

JDBC Interceptor

This Tomcat JDBC Interceptor aims at monitoring SQL Requests response times. It's very similar to JavaSimon's datasource wrapper ((for that reason javasimon-jdbc4.jar is required) and Tomcat's SlowQueryReportJmx interceptor. This feature requires at least Tomcat 7.

	<Resource name="jdbc/MyDataSource" auth="Container" type="javax.sql.DataSource"
		jdbcInterceptors="ConnectionState;StatementFinalizer;SlowQueryReportJmx(threshold=1000);org.javasimon.tomcat.SimonJdbcInterceptor(prefix=jdbc)"
		jmxEnabled="true"
		removeAbandoned="true" removeAbandonedTimeout="60" logAbandoned="true"
	/>