Package org.apache.hadoop.hbase.metrics.impl

Class MetricRegistriesImpl

java.lang.Object

org.apache.hadoop.hbase.metrics.MetricRegistries

org.apache.hadoop.hbase.metrics.impl.MetricRegistriesImpl

@Private
public class MetricRegistriesImpl
extends MetricRegistries

Implementation of MetricRegistries that does ref-counting.

Field Summary

Fields

Modifier and Type	Field	Description
private final MetricRegistryFactory	factory
private final RefCountingMap<MetricRegistryInfo,MetricRegistry>	registries

Constructor Summary

Constructors

Constructor	Description
MetricRegistriesImpl()
MetricRegistriesImpl(MetricRegistryFactory factory)

Method Summary

Modifier and Type	Method	Description
void	clear()	Removes all the MetricRegisties.
MetricRegistry	create(MetricRegistryInfo info)	Create or return MetricRegistry with the given info.
Optional<MetricRegistry>	get(MetricRegistryInfo info)	Returns the MetricRegistry if found.
Collection<MetricRegistry>	getMetricRegistries()	Returns MetricRegistry's created.
Set<MetricRegistryInfo>	getMetricRegistryInfos()	Returns MetricRegistryInfo's for the MetricRegistry's created.
boolean	remove(MetricRegistryInfo key)	Decrements the ref count of the MetricRegistry, and removes if ref count == 0.

Methods inherited from class org.apache.hadoop.hbase.metrics.MetricRegistries

global

Methods inherited from class java.lang.Object

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

Field Details

factory

private final MetricRegistryFactory factory

registries

private final RefCountingMap<MetricRegistryInfo,MetricRegistry> registries

Constructor Details

MetricRegistriesImpl

public MetricRegistriesImpl()

MetricRegistriesImpl

public MetricRegistriesImpl(MetricRegistryFactory factory)

Method Details

create

public MetricRegistry create(MetricRegistryInfo info)

Description copied from class: MetricRegistries

Create or return MetricRegistry with the given info. MetricRegistry will only be created if current reference count is 0. Otherwise ref counted is incremented, and an existing instance will be returned.

Specified by:

create in class MetricRegistries

Parameters:

info - the info object for the MetricRegistrytry.

Returns:

created or existing MetricRegistry.

remove

public boolean remove(MetricRegistryInfo key)

Description copied from class: MetricRegistries

Decrements the ref count of the MetricRegistry, and removes if ref count == 0.

Specified by:

remove in class MetricRegistries

Parameters:

key - the info object for the MetricRegistrytry.

Returns:

true if metric registry is removed.

get

public Optional<MetricRegistry> get(MetricRegistryInfo info)

Description copied from class: MetricRegistries

Returns the MetricRegistry if found.

Specified by:

get in class MetricRegistries

Parameters:

info - the info for the registry.

Returns:

a MetricRegistry optional.

getMetricRegistries

public Collection<MetricRegistry> getMetricRegistries()

Description copied from class: MetricRegistries

Returns MetricRegistry's created.

Specified by:

getMetricRegistries in class MetricRegistries

Returns:

MetricRegistry's created.

clear

public void clear()

Description copied from class: MetricRegistries

Removes all the MetricRegisties.

Specified by:

clear in class MetricRegistries

getMetricRegistryInfos

public Set<MetricRegistryInfo> getMetricRegistryInfos()

Description copied from class: MetricRegistries

Returns MetricRegistryInfo's for the MetricRegistry's created.

Specified by:

getMetricRegistryInfos in class MetricRegistries

Returns:

MetricRegistryInfo's for the MetricRegistry's created.