org.apache.lens.server.api.metrics

Class MethodMetricsFactory

java.lang.Object

org.apache.lens.server.api.metrics.MethodMetricsFactory

public class MethodMetricsFactory
extends Object

Factory for creating MethodMetrics objects on demand.

Constructor Summary

Constructors

Constructor and Description
MethodMetricsFactory(com.codahale.metrics.MetricRegistry metricRegistry)

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Remove all meters/timers/...
static MethodMetricsContext	createMethodGauge(org.apache.hadoop.conf.Configuration conf, boolean appendToStackName, String gaugeSuffix) Get query metric gauge name.
MethodMetrics	get(org.glassfish.jersey.server.model.ResourceMethod method, org.glassfish.jersey.server.ContainerRequest containerRequest) This is a factory method for getting a MethodMetrics instance.
MethodMetrics	get(String name) Returns MethodMetrics object corresponding to the given name.
Map<String,MethodMetrics>	getMethodMetricsMap() factory helper

Methods inherited from class java.lang.Object

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

Constructor Detail

MethodMetricsFactory

public MethodMetricsFactory(@NonNull
                    com.codahale.metrics.MetricRegistry metricRegistry)

Method Detail

get

public MethodMetrics get(@NonNull
                org.glassfish.jersey.server.model.ResourceMethod method,
                @NonNull
                org.glassfish.jersey.server.ContainerRequest containerRequest)

This is a factory method for getting a MethodMetrics instance. First a unique name is determined for the arguments and then function with same name is called with that unique name.

Parameters:

method -

containerRequest -

Returns:

See Also:

get(String), getUniqueName(org.glassfish.jersey.server.model.ResourceMethod, org.glassfish.jersey.server.ContainerRequest)

get

public MethodMetrics get(@NonNull
                String name)

Returns MethodMetrics object corresponding to the given name. If doesn't exist yet, one will be created.

Parameters:

name -

Returns:

clear

public void clear()

Remove all meters/timers/... created when MethodMetrics objects were constructed using this factory.

createMethodGauge

public static MethodMetricsContext createMethodGauge(@NonNull
                                     org.apache.hadoop.conf.Configuration conf,
                                     boolean appendToStackName,
                                     String gaugeSuffix)

Get query metric gauge name.

Parameters:

conf -

appendToStackName -

gaugeSuffix -

Returns:

getMethodMetricsMap

@Generated(value="lombok")
public Map<String,MethodMetrics> getMethodMetricsMap()

factory helper