Class InstrumentedAppender

java.lang.Object

org.apache.log4j.AppenderSkeleton

io.prometheus.client.log4j.InstrumentedAppender

All Implemented Interfaces:

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

public class InstrumentedAppender
extends org.apache.log4j.AppenderSkeleton

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.log4j.AppenderSkeleton

org.apache.log4j.AppenderSkeleton.NoOpErrorHandler

Field Summary

Fields

Modifier and Type	Field	Description
private static final Counter	COUNTER
static final String	COUNTER_NAME
private static final Counter.Child	DEBUG_LABEL
private static final Counter.Child	ERROR_LABEL
private static final Counter.Child	FATAL_LABEL
private static final Counter.Child	INFO_LABEL
private static final Counter.Child	TRACE_LABEL
private static final Counter.Child	WARN_LABEL

Fields inherited from class org.apache.log4j.AppenderSkeleton

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

Constructor Summary

Constructors

Constructor	Description
InstrumentedAppender()	Create a new instrumented appender using the default registry.

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

COUNTER_NAME

public static final String COUNTER_NAME

See Also:

• Constant Field Values

COUNTER

private static final Counter COUNTER

TRACE_LABEL

private static final Counter.Child TRACE_LABEL

DEBUG_LABEL

private static final Counter.Child DEBUG_LABEL

INFO_LABEL

private static final Counter.Child INFO_LABEL

WARN_LABEL

private static final Counter.Child WARN_LABEL

ERROR_LABEL

private static final Counter.Child ERROR_LABEL

FATAL_LABEL

private static final Counter.Child FATAL_LABEL

Constructor Details

InstrumentedAppender

public InstrumentedAppender()

Create a new instrumented appender using the default 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()