Package org.apache.hadoop.metrics2.lib

Class MutableMetricsFactory

java.lang.Object

org.apache.hadoop.metrics2.lib.MutableMetricsFactory

@Private
@Evolving
public class MutableMetricsFactory
extends Object

Constructor Summary

Constructors

Constructor	Description
MutableMetricsFactory()

Method Summary

Modifier and Type	Method	Description
protected MetricsInfo	getInfo(Class<?> cls, Metrics annotation)
protected MetricsInfo	getInfo(Metric annotation, Field field)
protected MetricsInfo	getInfo(Metric annotation, Method method)
protected MetricsInfo	getInfo(Metric annotation, String defaultName)
protected String	getName(Field field)
protected String	getName(Method method)
protected MutableMetric	newForField(Field field, Metric annotation)	Override to handle custom mutable metrics for fields
protected MutableMetric	newForMethod(Object source, Method method, Metric annotation)	Override to handle custom mutable metrics for methods

Methods inherited from class java.lang.Object

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

Constructor Details

MutableMetricsFactory

public MutableMetricsFactory()

Method Details

newForField

protected MutableMetric newForField(Field field,
 Metric annotation)

Override to handle custom mutable metrics for fields

Parameters:

field - of the metric

annotation - of the field

Returns:

a new metric object or null

newForMethod

protected MutableMetric newForMethod(Object source,
 Method method,
 Metric annotation)

Override to handle custom mutable metrics for methods

Parameters:

source - the metrics source object

method - to return the metric

annotation - of the method

Returns:

a new metric object or null

getInfo

protected MetricsInfo getInfo(Metric annotation,
 Field field)

getName

protected String getName(Field field)

getInfo

protected MetricsInfo getInfo(Metric annotation,
 Method method)

getInfo

protected MetricsInfo getInfo(Class<?> cls,
 Metrics annotation)

getName

protected String getName(Method method)

Parameters:

method - input method.

Returns:

Remove the prefix "get", if any, from the method name. Return the capacitalized method name."

getInfo

protected MetricsInfo getInfo(Metric annotation,
 String defaultName)