io.opentracing.contrib.metrics.label

Class ConstMetricLabel

java.lang.Object

io.opentracing.contrib.metrics.label.ConstMetricLabel

All Implemented Interfaces:

MetricLabel

public class ConstMetricLabel
extends Object
implements MetricLabel

This implementation returns a constant value for the metric label.

Constructor Summary

Constructors

Constructor and Description
ConstMetricLabel(String name, Object value)

Method Summary

Modifier and Type	Method and Description
Object	defaultValue() This method returns a default value for the specified label, if one is defined, otherwise null.
String	name() This method returns the name of the metric label.
Object	value(io.opentracing.contrib.api.SpanData spanData) This method returns a metric label value.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstMetricLabel

public ConstMetricLabel(String name,
                        Object value)

Method Detail

name

public String name()

Description copied from interface: MetricLabel

This method returns the name of the metric label.

Specified by:

name in interface MetricLabel

Returns:

The name

defaultValue

public Object defaultValue()

Description copied from interface: MetricLabel

This method returns a default value for the specified label, if one is defined, otherwise null.

Specified by:

defaultValue in interface MetricLabel

Returns:

The default value, or null

value

public Object value(io.opentracing.contrib.api.SpanData spanData)

Description copied from interface: MetricLabel

This method returns a metric label value.

Specified by:

value in interface MetricLabel

Parameters:

spanData - The span data from which to derive the label value

Returns:

The value, if null will suppress the metrics for the span being reported