org.apache.flink.runtime.metrics

Class MetricRegistryImpl

java.lang.Object

org.apache.flink.runtime.metrics.MetricRegistryImpl

All Implemented Interfaces:

MetricRegistry

public class MetricRegistryImpl
extends Object
implements MetricRegistry

A MetricRegistry keeps track of all registered Metrics. It serves as the connection between MetricGroups and MetricReporters.

Constructor Summary

Constructors

Constructor and Description
MetricRegistryImpl(MetricRegistryConfiguration config) Creates a new MetricRegistry and starts the configured reporter.

Method Summary

Modifier and Type	Method and Description
char	getDelimiter() Returns the global delimiter.
char	getDelimiter(int reporterIndex) Returns the configured delimiter for the reporter with the given index.
String	getMetricQueryServicePath() Returns the address under which the MetricQueryService is reachable.
int	getNumberReporters() Returns the number of registered reporters.
akka.actor.ActorRef	getQueryService()
List<org.apache.flink.metrics.reporter.MetricReporter>	getReporters()
ScopeFormats	getScopeFormats() Returns the scope formats.
boolean	isShutdown() Returns whether this registry has been shutdown.
void	register(org.apache.flink.metrics.Metric metric, String metricName, AbstractMetricGroup group) Registers a new Metric with this registry.
CompletableFuture<Void>	shutdown() Shuts down this registry and the associated MetricReporter.
void	startQueryService(akka.actor.ActorSystem actorSystem, ResourceID resourceID) Initializes the MetricQueryService.
void	unregister(org.apache.flink.metrics.Metric metric, String metricName, AbstractMetricGroup group) Un-registers the given Metric with this registry.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetricRegistryImpl

public MetricRegistryImpl(MetricRegistryConfiguration config)

Creates a new MetricRegistry and starts the configured reporter.

Method Detail

startQueryService

public void startQueryService(akka.actor.ActorSystem actorSystem,
                              ResourceID resourceID)

Initializes the MetricQueryService.

Parameters:

actorSystem - ActorSystem to create the MetricQueryService on

resourceID - resource ID used to disambiguate the actor name

getMetricQueryServicePath

@Nullable
public String getMetricQueryServicePath()

Returns the address under which the MetricQueryService is reachable.

Specified by:

getMetricQueryServicePath in interface MetricRegistry

Returns:

address of the metric query service

getDelimiter

public char getDelimiter()

Description copied from interface: MetricRegistry

Returns the global delimiter.

Specified by:

getDelimiter in interface MetricRegistry

Returns:

global delimiter

getDelimiter

public char getDelimiter(int reporterIndex)

Description copied from interface: MetricRegistry

Returns the configured delimiter for the reporter with the given index.

Specified by:

getDelimiter in interface MetricRegistry

Parameters:

reporterIndex - index of the reporter whose delimiter should be used

Returns:

configured reporter delimiter, or global delimiter if index is invalid

getNumberReporters

public int getNumberReporters()

Description copied from interface: MetricRegistry

Returns the number of registered reporters.

Specified by:

getNumberReporters in interface MetricRegistry

getReporters

@VisibleForTesting
public List<org.apache.flink.metrics.reporter.MetricReporter> getReporters()

isShutdown

public boolean isShutdown()

Returns whether this registry has been shutdown.

Returns:

true, if this registry was shutdown, otherwise false

shutdown

public CompletableFuture<Void> shutdown()

Shuts down this registry and the associated MetricReporter.

NOTE: This operation is asynchronous and returns a future which is completed once the shutdown operation has been completed.

Returns:

Future which is completed once the MetricRegistryImpl is shut down.

getScopeFormats

public ScopeFormats getScopeFormats()

Description copied from interface: MetricRegistry

Returns the scope formats.

Specified by:

getScopeFormats in interface MetricRegistry

Returns:

scope formats

register

public void register(org.apache.flink.metrics.Metric metric,
                     String metricName,
                     AbstractMetricGroup group)

Description copied from interface: MetricRegistry

Registers a new Metric with this registry.

Specified by:

register in interface MetricRegistry

Parameters:

metric - the metric that was added

metricName - the name of the metric

group - the group that contains the metric

unregister

public void unregister(org.apache.flink.metrics.Metric metric,
                       String metricName,
                       AbstractMetricGroup group)

Description copied from interface: MetricRegistry

Un-registers the given Metric with this registry.

Specified by:

unregister in interface MetricRegistry

Parameters:

metric - the metric that should be removed

metricName - the name of the metric

group - the group that contains the metric

getQueryService

@VisibleForTesting
 @Nullable
public akka.actor.ActorRef getQueryService()