org.apache.dubbo.metrics

Class NOPMetricManager

java.lang.Object

org.apache.dubbo.metrics.NOPMetricManager

All Implemented Interfaces:

IMetricManager

public class NOPMetricManager
extends Object
implements IMetricManager

The empty implementation for IMetricManager

Constructor Summary

Constructors

Constructor and Description
NOPMetricManager()

Method Summary

Modifier and Type	Method and Description
BucketCounter	getBucketCounter(String group, MetricName name) Create a BucketCounter metric in given group, and name.
Compass	getCompass(String group, MetricName name) Create a Compass metric in give group, name, and type if not exist, an instance will be created.
Map<MetricName,Compass>	getCompasses(String group, MetricFilter filter) Get all the compasses by the specific group and filter
Counter	getCounter(String group, MetricName name) Create a Counter metric in given group, and name.
Map<MetricName,Counter>	getCounters(String group, MetricFilter filter) Get all the counters by the specific group and filter
MetricRegistry	getMetricRegistryByGroup(String group) Get metric registry by group name, if not found, null will be returned
Map<MetricName,Metric>	getMetrics(String group) A map of metric names to metrics.
List<String>	listMetricGroups() Get a list of group in current MetricManager
Map<String,Set<MetricName>>	listMetricNamesByGroup() list all metric names by group
void	register(String group, MetricName name, Metric metric) Register a customized metric to specified group.

Methods inherited from class java.lang.Object

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

Constructor Detail

NOPMetricManager

public NOPMetricManager()

Method Detail

getCounter

public Counter getCounter(String group,
                          MetricName name)

Description copied from interface: IMetricManager

Create a Counter metric in given group, and name. if not exist, an instance will be created.

Specified by:

getCounter in interface IMetricManager

Parameters:

group - the group of MetricRegistry

name - the name of the metric

Returns:

an instance of counter

getBucketCounter

public BucketCounter getBucketCounter(String group,
                                      MetricName name)

Description copied from interface: IMetricManager

Create a BucketCounter metric in given group, and name. if not exist, an instance will be created.

Specified by:

getBucketCounter in interface IMetricManager

Parameters:

group - the group of MetricRegistry

name - the name of the metric

Returns:

an instance of BucketCounter

getCompass

public Compass getCompass(String group,
                          MetricName name)

Description copied from interface: IMetricManager

Create a Compass metric in give group, name, and type if not exist, an instance will be created.

Specified by:

getCompass in interface IMetricManager

Parameters:

group - the group of MetricRegistry

name - the name of the metric

Returns:

an instance of Compass

listMetricGroups

public List<String> listMetricGroups()

Description copied from interface: IMetricManager

Get a list of group in current MetricManager

Specified by:

listMetricGroups in interface IMetricManager

Returns:

a list of group name

listMetricNamesByGroup

public Map<String,Set<MetricName>> listMetricNamesByGroup()

Description copied from interface: IMetricManager

list all metric names by group

Specified by:

listMetricNamesByGroup in interface IMetricManager

Returns:

a map of metric name set, keyed by group name

getMetricRegistryByGroup

public MetricRegistry getMetricRegistryByGroup(String group)

Description copied from interface: IMetricManager

Get metric registry by group name, if not found, null will be returned

Specified by:

getMetricRegistryByGroup in interface IMetricManager

Parameters:

group - the group name to query

Returns:

the MetricRegistry that is correspondent to the group

getCounters

public Map<MetricName,Counter> getCounters(String group,
                                           MetricFilter filter)

Description copied from interface: IMetricManager

Get all the counters by the specific group and filter

Specified by:

getCounters in interface IMetricManager

Parameters:

group - the given group

filter - the given filter

Returns:

the MetricName to Counter map

getCompasses

public Map<MetricName,Compass> getCompasses(String group,
                                            MetricFilter filter)

Description copied from interface: IMetricManager

Get all the compasses by the specific group and filter

Specified by:

getCompasses in interface IMetricManager

Parameters:

group - the given group

filter - the given filter

Returns:

the MetricName to Compass map

register

public void register(String group,
                     MetricName name,
                     Metric metric)

Description copied from interface: IMetricManager

Register a customized metric to specified group.

Specified by:

register in interface IMetricManager

metric - the metric to register

getMetrics

public Map<MetricName,Metric> getMetrics(String group)

Description copied from interface: IMetricManager

A map of metric names to metrics.

Specified by:

getMetrics in interface IMetricManager

Returns:

all the metrics