com.netflix.spectator.api.patterns

Class IntervalCounter

java.lang.Object

com.netflix.spectator.api.patterns.IntervalCounter

All Implemented Interfaces:

Counter, Meter

public final class IntervalCounter
extends java.lang.Object
implements Counter

A counter that also keeps track of the time since last update.

Method Summary

Modifier and Type	Method and Description
long	count() The cumulative count since this counter was created.
static IntervalCounter	get(Registry registry, Id id) Create a new instance.
boolean	hasExpired() Indicates whether the meter is expired.
Id	id() Identifier used to lookup this meter in the registry.
void	increment() Update the counter by one.
void	increment(long amount) Update the counter by amount.
java.lang.Iterable<Measurement>	measure() Get the set of measurements for this meter.
double	secondsSinceLastUpdate() Return the number of seconds since the last time the counter was incremented.

Methods inherited from class java.lang.Object

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

Method Detail

get

public static IntervalCounter get(Registry registry,
                                  Id id)

Create a new instance.

Parameters:

registry - Registry to use.

id - Identifier for the metric being registered.

Returns:

Counter instance.

increment

public void increment()

Description copied from interface: Counter

Update the counter by one.

Specified by:

increment in interface Counter

increment

public void increment(long amount)

Description copied from interface: Counter

Update the counter by amount.

Specified by:

increment in interface Counter

Parameters:

amount - Amount to add to the counter.

count

public long count()

Description copied from interface: Counter

The cumulative count since this counter was created.

Specified by:

count in interface Counter

id

public Id id()

Description copied from interface: Meter

Identifier used to lookup this meter in the registry.

Specified by:

id in interface Meter

secondsSinceLastUpdate

public double secondsSinceLastUpdate()

Return the number of seconds since the last time the counter was incremented.

measure

public java.lang.Iterable<Measurement> measure()

Description copied from interface: Meter

Get the set of measurements for this meter.

Specified by:

measure in interface Meter

hasExpired

public boolean hasExpired()

Description copied from interface: Meter

Indicates whether the meter is expired. For example, a counter might expire if there is no activity within a given time frame.

Specified by:

hasExpired in interface Meter