com.codahale.metrics.servlet

Class AbstractInstrumentedFilter

java.lang.Object

com.codahale.metrics.servlet.AbstractInstrumentedFilter

All Implemented Interfaces:

javax.servlet.Filter

Direct Known Subclasses:

InstrumentedFilter

public abstract class AbstractInstrumentedFilter
extends Object
implements javax.servlet.Filter

Filter implementation which captures request information and a breakdown of the response codes being returned.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractInstrumentedFilter(String registryAttribute, Map<Integer,String> meterNamesByStatusCode, String otherMetricName) Creates a new instance of the filter.

Method Summary

Modifier and Type	Method and Description
void	destroy()
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)
void	init(javax.servlet.FilterConfig filterConfig)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractInstrumentedFilter

protected AbstractInstrumentedFilter(String registryAttribute,
                                     Map<Integer,String> meterNamesByStatusCode,
                                     String otherMetricName)

Creates a new instance of the filter.

Parameters:

registryAttribute - the attribute used to look up the metrics registry in the servlet context

meterNamesByStatusCode - A map, keyed by status code, of meter names that we are interested in.

otherMetricName - The name used for the catch-all meter.

Method Detail

init

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

Specified by:

init in interface javax.servlet.Filter

Throws:

javax.servlet.ServletException

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter

doFilter

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

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException