Class DefaultProducerWorkerFactory<OutputT,MetricsT>

java.lang.Object

io.aleph0.yap.core.worker.DefaultProducerWorkerFactory<OutputT,MetricsT>

Type Parameters:

OutputT - the type of the output

MetricsT - the type of the metrics

All Implemented Interfaces:

Measureable<MetricsT>, ProducerWorkerFactory<OutputT,MetricsT>

public class DefaultProducerWorkerFactory<OutputT,MetricsT>
extends Object
implements ProducerWorkerFactory<OutputT,MetricsT>

A ProducerWorkerFactory that creates and manages multiple MeasuredProducerWorkers and tracks their metrics.

This factory uses a BinaryOperator to aggregate the metrics of all active workers. If there are no active workers, the metrics will be null. If there is one active worker, the metrics will be the metrics of that worker. If there are multiple active workers, the metrics will be the result of applying the BinaryOperator to the metrics of all active workers.

Constructor Summary

Constructors

Constructor	Description
DefaultProducerWorkerFactory(Supplier<MeasuredProducerWorker<OutputT,MetricsT>> workerSupplier, BinaryOperator<MetricsT> metricsAggregator)

Method Summary

Modifier and Type	Method	Description
MetricsT	checkMetrics()	Non-destructive check of the metrics.
MetricsT	flushMetrics()	Destructive read of the metrics.
MeasuredProducerWorker<OutputT,MetricsT>	newProducerWorker()	Creates a new worker

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultProducerWorkerFactory

public DefaultProducerWorkerFactory(Supplier<MeasuredProducerWorker<OutputT,MetricsT>> workerSupplier,
 BinaryOperator<MetricsT> metricsAggregator)

Method Details

newProducerWorker

public MeasuredProducerWorker<OutputT,MetricsT> newProducerWorker()

Description copied from interface: ProducerWorkerFactory

Creates a new worker

Specified by:

newProducerWorker in interface ProducerWorkerFactory<OutputT,MetricsT>

Returns:

the new worker

checkMetrics

public MetricsT checkMetrics()

Description copied from interface: Measureable

Non-destructive check of the metrics. This should be used to check the state of metrics without clearing them, for example in a TaskController.

Specified by:

checkMetrics in interface Measureable<OutputT>

Returns:

the metrics

flushMetrics

public MetricsT flushMetrics()

Description copied from interface: Measureable

Destructive read of the metrics. This should be used to check and reset the state of metrics, for example by the metrics checking thread.

Specified by:

flushMetrics in interface Measureable<OutputT>

Returns:

the metrics