org.kuali.kra.web.filter

Class PerformanceLoggingFilter

java.lang.Object

org.kuali.kra.web.filter.PerformanceLoggingFilter

All Implemented Interfaces:

javax.servlet.Filter

public class PerformanceLoggingFilter
extends Object
implements javax.servlet.Filter

Part of KRA's FilterChain that handles timing a HttpServletRequest and reporting on the state of resource consumption. The following information gets logged from this Filter at the INFO log level.

• Request execution time
• Initial resource consumption
• Initial available resources
• Final resource consumption
• Final available resources

Constructor Summary

Constructors

Constructor and Description
PerformanceLoggingFilter()

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy()
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain) Does the actual logging.
void	init(javax.servlet.FilterConfig config)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PerformanceLoggingFilter

public PerformanceLoggingFilter()

Method Detail

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter

See Also:

Filter.destroy()

init

public void init(javax.servlet.FilterConfig config)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Filter

Throws:

javax.servlet.ServletException

See Also:

Filter.init(FilterConfig)

doFilter

public void doFilter(javax.servlet.ServletRequest request,
            javax.servlet.ServletResponse response,
            javax.servlet.FilterChain chain)
              throws IOException,
                     javax.servlet.ServletException

Does the actual logging. The log4j.properties file already covers user and date/time logging for us, so the only thing that gets logged in INFO here is the intended action.

Memory used for a request is calculated with Runtime.freeMemory() and Runtime.totalMemory()

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException

See Also:

Filter.doFilter(ServletRequest,ServletResponse,FilterChain), Runtime.totalMemory(), Runtime.freeMemory()