Class InstrumentedAppender

java.lang.Object

org.apache.log4j.AppenderSkeleton

com.codahale.metrics.log4j.InstrumentedAppender

All Implemented Interfaces:

org.apache.log4j.Appender, org.apache.log4j.spi.OptionHandler

public class InstrumentedAppender
extends org.apache.log4j.AppenderSkeleton

A Log4J Appender which has seven meters, one for each logging level and one for the total number of statements being logged. The meter names are the logging level names appended to the name of the appender.

Field Summary

Fields

Modifier and Type	Field	Description
private Meter	all
private Meter	debug
private Meter	error
private Meter	fatal
private Meter	info
private final MetricRegistry	registry
private Meter	trace
private Meter	warn

Fields inherited from class org.apache.log4j.AppenderSkeleton

closed, errorHandler, headFilter, layout, name, tailFilter, threshold

Constructor Summary

Constructors

Constructor	Description
InstrumentedAppender(MetricRegistry registry)	Create a new instrumented appender using the given registry.
InstrumentedAppender(String registryName)	Create a new instrumented appender using the given registry name.

Method Summary

Modifier and Type	Method	Description
void	activateOptions()
protected void	append(org.apache.log4j.spi.LoggingEvent event)
void	close()
boolean	requiresLayout()

Methods inherited from class org.apache.log4j.AppenderSkeleton

addFilter, clearFilters, doAppend, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isAsSevereAsThreshold, setErrorHandler, setLayout, setName, setThreshold

Methods inherited from class Object

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

Field Details

registry

private final MetricRegistry registry

all

private Meter all

trace

private Meter trace

debug

private Meter debug

info

private Meter info

warn

private Meter warn

error

private Meter error

fatal

private Meter fatal

Constructor Details

InstrumentedAppender

public InstrumentedAppender(String registryName)

Create a new instrumented appender using the given registry name.

Parameters:

registryName - the name of the registry in SharedMetricRegistries

InstrumentedAppender

public InstrumentedAppender(MetricRegistry registry)

Create a new instrumented appender using the given registry.

Parameters:

registry - the metric registry

Method Details

activateOptions

public void activateOptions()

Specified by:

activateOptions in interface org.apache.log4j.spi.OptionHandler

Overrides:

activateOptions in class org.apache.log4j.AppenderSkeleton

append

protected void append(org.apache.log4j.spi.LoggingEvent event)

Specified by:

append in class org.apache.log4j.AppenderSkeleton

close

public void close()

requiresLayout

public boolean requiresLayout()