Class Counter

java.lang.Object

com.codename1.backend.metrics.Instrument

com.codename1.backend.metrics.Counter

public final class Counter
extends Instrument

A count that only goes up -- requests served, jobs run, errors seen. Exported as a cumulative monotonic sum.

Recording is one atomic add: no lock, no allocation.

Field Summary

Fields inherited from class Instrument

COUNTER, GAUGE, HISTOGRAM, UP_DOWN_COUNTER

Method Summary

Modifier and Type	Method	Description
void	add(long amount)	Adds amount.
long	get()
void	increment()	Adds one.
List	points()	The current points, each a map with attributes (a map, possibly empty) and either value or, for a histogram, count, sum, min, max, bounds and buckets.

Methods inherited from class Instrument

getDescription, getKind, getName, getUnit

Methods inherited from class Object

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

Method Details

increment

public void increment()

Adds one.

add

public void add(long amount)

Adds amount. A counter refuses a negative amount, since a cumulative monotonic sum that falls reads as a reset to every backend; an up-down counter takes either sign.

get

public long get()

points

public List points()

Description copied from class: Instrument

The current points, each a map with attributes (a map, possibly empty) and either value or, for a histogram, count, sum, min, max, bounds and buckets.

Specified by:

points in class Instrument