co.cask.cdap.metrics.collect

Class AggregatedMetricsCollectionService

java.lang.Object

com.google.common.util.concurrent.AbstractScheduledService

co.cask.cdap.metrics.collect.AggregatedMetricsCollectionService

All Implemented Interfaces:

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

Direct Known Subclasses:

KafkaMetricsCollectionService, LocalMetricsCollectionService

public abstract class AggregatedMetricsCollectionService
extends com.google.common.util.concurrent.AbstractScheduledService
implements MetricsCollectionService

Base class for MetricsCollectionService which collect metrics through a set of cached AggregatedMetricsEmitter.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.common.util.concurrent.AbstractScheduledService

com.google.common.util.concurrent.AbstractScheduledService.CustomScheduler, com.google.common.util.concurrent.AbstractScheduledService.Scheduler

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

Constructors

Constructor and Description
AggregatedMetricsCollectionService()

Method Summary

Methods

Modifier and Type	Method and Description
protected ScheduledExecutorService	executor()
MetricsContext	getContext(Map<String,String> tags)
protected abstract void	publish(Iterator<MetricValues> metrics) Publishes the given collection of MetricValues.
protected void	runOneIteration()
protected com.google.common.util.concurrent.AbstractScheduledService.Scheduler	scheduler()
protected void	shutDown()

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

addListener, isRunning, start, startAndWait, startUp, 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

AggregatedMetricsCollectionService

public AggregatedMetricsCollectionService()

Method Detail

publish

protected abstract void publish(Iterator<MetricValues> metrics)
                         throws Exception

Publishes the given collection of MetricValues. When this method returns, the given Iterator will no longer be valid. This method should process the input iterator and returns quickly. Any long operations should be run in a separated thread. This method is guaranteed not to get concurrent calls.

Parameters:

metrics - collection of MetricValues to publish.

Throws:

Exception - if there is error raised during publish.

runOneIteration

protected final void runOneIteration()
                              throws Exception

Specified by:

runOneIteration in class com.google.common.util.concurrent.AbstractScheduledService

Throws:

Exception

executor

protected ScheduledExecutorService executor()

Overrides:

executor in class com.google.common.util.concurrent.AbstractScheduledService

scheduler

protected com.google.common.util.concurrent.AbstractScheduledService.Scheduler scheduler()

Specified by:

scheduler in class com.google.common.util.concurrent.AbstractScheduledService

getContext

public final MetricsContext getContext(Map<String,String> tags)

Specified by:

getContext in interface MetricsCollectionService

shutDown

protected void shutDown()
                 throws Exception

Overrides:

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

Throws:

Exception