org.apache.hadoop.metrics2

Class MetricsRecordBuilder

java.lang.Object

org.apache.hadoop.metrics2.MetricsRecordBuilder

Direct Known Subclasses:

MetricsJsonBuilder, MetricStringBuilder

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public abstract class MetricsRecordBuilder
extends Object

The metrics record builder interface

Constructor Summary

Constructors

Constructor and Description
MetricsRecordBuilder()

Method Summary

Modifier and Type	Method and Description
abstract MetricsRecordBuilder	add(AbstractMetric metric) Add a pre-made immutable metric object
abstract MetricsRecordBuilder	add(MetricsTag tag) Add an immutable metrics tag object
abstract MetricsRecordBuilder	addCounter(MetricsInfo info, int value) Add an integer metric
abstract MetricsRecordBuilder	addCounter(MetricsInfo info, long value) Add an long metric
abstract MetricsRecordBuilder	addGauge(MetricsInfo info, double value) Add a double gauge metric
abstract MetricsRecordBuilder	addGauge(MetricsInfo info, float value) Add a float gauge metric
abstract MetricsRecordBuilder	addGauge(MetricsInfo info, int value) Add a integer gauge metric
abstract MetricsRecordBuilder	addGauge(MetricsInfo info, long value) Add a long gauge metric
MetricsCollector	endRecord() Syntactic sugar to add multiple records in a collector in a one liner.
abstract MetricsCollector	parent()
abstract MetricsRecordBuilder	setContext(String value) Set the context tag
abstract MetricsRecordBuilder	tag(MetricsInfo info, String value) Add a metrics value with metrics information

Methods inherited from class java.lang.Object

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

Constructor Detail

MetricsRecordBuilder

public MetricsRecordBuilder()

Method Detail

tag

public abstract MetricsRecordBuilder tag(MetricsInfo info,
                                         String value)

Add a metrics value with metrics information

Parameters:

info - metadata of the tag

value - of the tag

Returns:

self

add

public abstract MetricsRecordBuilder add(MetricsTag tag)

Add an immutable metrics tag object

Parameters:

tag - a pre-made tag object (potentially save an object construction)

Returns:

self

add

public abstract MetricsRecordBuilder add(AbstractMetric metric)

Add a pre-made immutable metric object

Parameters:

metric - the pre-made metric to save an object construction

Returns:

self

setContext

public abstract MetricsRecordBuilder setContext(String value)

Set the context tag

Parameters:

value - of the context

Returns:

self

addCounter

public abstract MetricsRecordBuilder addCounter(MetricsInfo info,
                                                int value)

Add an integer metric

Parameters:

info - metadata of the metric

value - of the metric

Returns:

self

addCounter

public abstract MetricsRecordBuilder addCounter(MetricsInfo info,
                                                long value)

Add an long metric

Parameters:

info - metadata of the metric

value - of the metric

Returns:

self

addGauge

public abstract MetricsRecordBuilder addGauge(MetricsInfo info,
                                              int value)

Add a integer gauge metric

Parameters:

info - metadata of the metric

value - of the metric

Returns:

self

addGauge

public abstract MetricsRecordBuilder addGauge(MetricsInfo info,
                                              long value)

Add a long gauge metric

Parameters:

info - metadata of the metric

value - of the metric

Returns:

self

addGauge

public abstract MetricsRecordBuilder addGauge(MetricsInfo info,
                                              float value)

Add a float gauge metric

Parameters:

info - metadata of the metric

value - of the metric

Returns:

self

addGauge

public abstract MetricsRecordBuilder addGauge(MetricsInfo info,
                                              double value)

Add a double gauge metric

Parameters:

info - metadata of the metric

value - of the metric

Returns:

self

parent

public abstract MetricsCollector parent()

Returns:

the parent metrics collector object

endRecord

public MetricsCollector endRecord()

Syntactic sugar to add multiple records in a collector in a one liner.

Returns:

the parent metrics collector object