org.apache.samza.util

Class NoOpMetricsRegistry

java.lang.Object

org.apache.samza.util.NoOpMetricsRegistry

All Implemented Interfaces:

MetricsRegistry

public class NoOpMetricsRegistry
extends java.lang.Object
implements MetricsRegistry

MetricsRegistry implementation for when no actual metrics need to be recorded but a registry is still required.

Constructor Summary

Constructors

Constructor and Description
NoOpMetricsRegistry()

Method Summary

Modifier and Type	Method and Description
Counter	newCounter(java.lang.String group, Counter counter) Register existing Counter with this registry
Counter	newCounter(java.lang.String group, java.lang.String name) Create and register a new Counter
<T> Gauge<T>	newGauge(java.lang.String group, Gauge<T> gauge) Register an existing Gauge
<T> Gauge<T>	newGauge(java.lang.String group, java.lang.String name, T value) Create and register a new Gauge
<T> ListGauge<T>	newListGauge(java.lang.String group, ListGauge<T> listGauge) Register a ListGauge
Timer	newTimer(java.lang.String group, java.lang.String name) Create and Register a new Timer
Timer	newTimer(java.lang.String group, Timer timer) Register existing Timer with this registry

Methods inherited from class java.lang.Object

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

Constructor Detail

NoOpMetricsRegistry

public NoOpMetricsRegistry()

Method Detail

newCounter

public Counter newCounter(java.lang.String group,
                          java.lang.String name)

Description copied from interface: MetricsRegistry

Create and register a new Counter

Specified by:

newCounter in interface MetricsRegistry

Parameters:

group - Group for this Counter

name - Name of to-be-created Counter

Returns:

New Counter instance

newCounter

public Counter newCounter(java.lang.String group,
                          Counter counter)

Description copied from interface: MetricsRegistry

Register existing Counter with this registry

Specified by:

newCounter in interface MetricsRegistry

Parameters:

group - Group for this Counter

counter - Existing Counter to register

Returns:

Counter that was registered

newGauge

public <T> Gauge<T> newGauge(java.lang.String group,
                             java.lang.String name,
                             T value)

Description copied from interface: MetricsRegistry

Create and register a new Gauge

Specified by:

newGauge in interface MetricsRegistry

Type Parameters:

T - Type the Gauge will be wrapping

Parameters:

group - Group for this Gauge

name - Name of to-be-created Gauge

value - Initial value for the Gauge

Returns:

Gauge was created and registered

newGauge

public <T> Gauge<T> newGauge(java.lang.String group,
                             Gauge<T> gauge)

Description copied from interface: MetricsRegistry

Register an existing Gauge

Specified by:

newGauge in interface MetricsRegistry

Type Parameters:

T - Type the Gauge will be wrapping

Parameters:

group - Group for this Gauge

gauge - Initial value for the Gauge

Returns:

Gauge was registered

newListGauge

public <T> ListGauge<T> newListGauge(java.lang.String group,
                                     ListGauge<T> listGauge)

Description copied from interface: MetricsRegistry

Register a ListGauge

Specified by:

newListGauge in interface MetricsRegistry

Type Parameters:

T - Type of the ListGauge

Parameters:

group - Group for this ListGauge

listGauge - the ListGauge to register

Returns:

ListGauge registered

newTimer

public Timer newTimer(java.lang.String group,
                      java.lang.String name)

Description copied from interface: MetricsRegistry

Create and Register a new Timer

Specified by:

newTimer in interface MetricsRegistry

Parameters:

group - Group for this Timer

name - Name of to-be-created Timer

Returns:

New Timer instance

newTimer

public Timer newTimer(java.lang.String group,
                      Timer timer)

Description copied from interface: MetricsRegistry

Register existing Timer with this registry

Specified by:

newTimer in interface MetricsRegistry

Parameters:

group - Group for this Timer

timer - Existing Timer to register

Returns:

Timer that was registered