org.apache.slider.server.appmaster.management

Class MeterAndCounter

java.lang.Object

org.apache.slider.server.appmaster.management.MeterAndCounter

public class MeterAndCounter
extends Object

A combined meter and counter that can be used to measure load. Hash and equality are derived from the name

Field Summary

Fields

Modifier and Type	Field and Description
static String	COUNTER suffix for counters: ".counter"
static String	METER suffix for meters: ".meter"

Constructor Summary

Constructors

Constructor and Description
MeterAndCounter(com.codahale.metrics.MetricRegistry metrics, Class clazz, String name) Construct an instance
MeterAndCounter(com.codahale.metrics.MetricRegistry metrics, String name) Construct an instance

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
long	getCount() Get the count.
int	hashCode()
void	inc()
void	mark() Increment the counter, mark the meter

Methods inherited from class java.lang.Object

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

Field Detail

COUNTER

public static final String COUNTER

suffix for counters: ".counter"

See Also:

Constant Field Values

METER

public static final String METER

suffix for meters: ".meter"

See Also:

Constant Field Values

Constructor Detail

MeterAndCounter

public MeterAndCounter(com.codahale.metrics.MetricRegistry metrics,
               String name)

Construct an instance

Parameters:

metrics - metrics to bond to

name - name before suffixes are appended

MeterAndCounter

public MeterAndCounter(com.codahale.metrics.MetricRegistry metrics,
               Class clazz,
               String name)

Construct an instance

Parameters:

metrics - metrics to bond to

clazz - class to use to derive name

name - name before suffixes are appended

Method Detail

mark

public void mark()

Increment the counter, mark the meter

inc

public void inc()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getCount

public long getCount()

Get the count.

Returns:

the current count