Package org.apache.flink.runtime.rest.handler.legacy.metrics

Class MetricFetcherImpl<T extends RestfulGateway>

java.lang.Object

org.apache.flink.runtime.rest.handler.legacy.metrics.MetricFetcherImpl<T>

Type Parameters:

T - type of the RestfulGateway from which to retrieve the metric query service path.

All Implemented Interfaces:

MetricFetcher

public class MetricFetcherImpl<T extends RestfulGateway>
extends Object
implements MetricFetcher

Implementation of MetricFetcher which fetches metrics from the MetricQueryServiceGateway.

Constructor Summary

Constructors

Constructor	Description
MetricFetcherImpl(GatewayRetriever<T> retriever, MetricQueryServiceRetriever queryServiceRetriever, Executor executor, Duration timeout, long updateInterval)

Method Summary

Modifier and Type	Method	Description
static <T extends RestfulGateway> MetricFetcherImpl<T>	fromConfiguration(org.apache.flink.configuration.Configuration configuration, MetricQueryServiceRetriever metricQueryServiceGatewayRetriever, GatewayRetriever<T> dispatcherGatewayRetriever, ExecutorService executor)
long	getLastUpdateTime()
MetricStore	getMetricStore()	Returns the MetricStore containing all stored metrics.
void	update()	This method can be used to signal this MetricFetcher that the metrics are still in use and should be updated.

Methods inherited from class java.lang.Object

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

Constructor Details

MetricFetcherImpl

public MetricFetcherImpl(GatewayRetriever<T> retriever,
 MetricQueryServiceRetriever queryServiceRetriever,
 Executor executor,
 Duration timeout,
 long updateInterval)

Method Details

getMetricStore

public MetricStore getMetricStore()

Returns the MetricStore containing all stored metrics.

Specified by:

getMetricStore in interface MetricFetcher

Returns:

MetricStore containing all stored metrics;

update

public void update()

This method can be used to signal this MetricFetcher that the metrics are still in use and should be updated.

Specified by:

update in interface MetricFetcher

getLastUpdateTime

public long getLastUpdateTime()

Specified by:

getLastUpdateTime in interface MetricFetcher

Returns:

timestamp of the last update.

fromConfiguration

@Nonnull
public static <T extends RestfulGateway>
MetricFetcherImpl<T> fromConfiguration(org.apache.flink.configuration.Configuration configuration,
 MetricQueryServiceRetriever metricQueryServiceGatewayRetriever,
 GatewayRetriever<T> dispatcherGatewayRetriever,
 ExecutorService executor)