co.cask.tigon.metrics
Class NoOpMetricsCollectionService

java.lang.Object
  com.google.common.util.concurrent.AbstractIdleService
      co.cask.tigon.metrics.NoOpMetricsCollectionService

All Implemented Interfaces:

MetricsCollectionService, com.google.common.util.concurrent.Service

public class NoOpMetricsCollectionService
extends com.google.common.util.concurrent.AbstractIdleService
implements MetricsCollectionService

No-op, to be used in unit-tests

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.common.util.concurrent.Service

com.google.common.util.concurrent.Service.Listener, com.google.common.util.concurrent.Service.State

Constructor Summary

NoOpMetricsCollectionService()

Method Summary

MetricsCollector	getCollector(MetricsScope scope, String context, String runId) Returns the metric collector for the given context.
protected void	shutDown()
protected void	startUp()

Methods inherited from class com.google.common.util.concurrent.AbstractIdleService

addListener, executor, isRunning, start, startAndWait, state, stop, stopAndWait, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.common.util.concurrent.Service

addListener, isRunning, start, startAndWait, state, stop, stopAndWait

Constructor Detail

NoOpMetricsCollectionService

public NoOpMetricsCollectionService()

Method Detail

startUp

protected void startUp()
                throws Exception

Specified by:

startUp in class com.google.common.util.concurrent.AbstractIdleService

Throws:

Exception

shutDown

protected void shutDown()
                 throws Exception

Specified by:

shutDown in class com.google.common.util.concurrent.AbstractIdleService

Throws:

Exception

getCollector

public MetricsCollector getCollector(MetricsScope scope,
                                     String context,
                                     String runId)

Description copied from interface: MetricsCollectionService

Returns the metric collector for the given context.

Specified by:

getCollector in interface MetricsCollectionService

context - Name of the context that generating the metric.

runId - The Id fo the given run that generating the metric.

Returns:

A MetricsCollector for emitting metrics.