co.cask.cdap.metrics.collect

Class KafkaMetricsCollectionService

java.lang.Object

com.google.common.util.concurrent.AbstractScheduledService

co.cask.cdap.metrics.collect.AggregatedMetricsCollectionService

co.cask.cdap.metrics.collect.KafkaMetricsCollectionService

All Implemented Interfaces:

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

public class KafkaMetricsCollectionService
extends AggregatedMetricsCollectionService

A AggregatedMetricsCollectionService that publish MetricValues to kafka. The partition is determined by the metric context.

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
KafkaMetricsCollectionService(KafkaClient kafkaClient, String topicPrefix, DatumWriter<MetricValues> recordWriter)
KafkaMetricsCollectionService(KafkaClient kafkaClient, String topicPrefix, KafkaPublisher.Ack ack, DatumWriter<MetricValues> recordWriter)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	publish(Iterator<MetricValues> metrics) Publishes the given collection of MetricValues.
protected void	startUp()

Methods inherited from class co.cask.cdap.metrics.collect.AggregatedMetricsCollectionService

executor, getContext, runOneIteration, scheduler, shutDown

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

addListener, 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

KafkaMetricsCollectionService

@Inject
public KafkaMetricsCollectionService(KafkaClient kafkaClient,
                                    String topicPrefix,
                                    DatumWriter<MetricValues> recordWriter)

KafkaMetricsCollectionService

public KafkaMetricsCollectionService(KafkaClient kafkaClient,
                             String topicPrefix,
                             KafkaPublisher.Ack ack,
                             DatumWriter<MetricValues> recordWriter)

Method Detail

startUp

protected void startUp()
                throws Exception

Overrides:

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

Throws:

Exception

publish

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

Description copied from class: AggregatedMetricsCollectionService

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.

Specified by:

publish in class AggregatedMetricsCollectionService

Parameters:

metrics - collection of MetricValues to publish.

Throws:

Exception - if there is error raised during publish.