org.apache.sling.commons.metrics

Interface MetricsService

public interface MetricsService

The MetricsService enables creation of various types of Metric.

Field Summary

Fields

Modifier and Type	Field and Description
static MetricsService	NOOP Dummy variant of MetricsService which does not collect any metric

Method Summary

Modifier and Type	Method and Description
<A> A	adaptTo(java.lang.Class<A> type) Adapts the service to the specified type.
Counter	counter(java.lang.String name) Creates a new Counter and registers it under the given name.
Histogram	histogram(java.lang.String name) Creates a new Histogram and registers it under the given name.
Meter	meter(java.lang.String name) Creates a new Meter and registers it under the given name.
Timer	timer(java.lang.String name) Creates a new Timer and registers it under the given name.

Field Detail

NOOP

static final MetricsService NOOP

Dummy variant of MetricsService which does not collect any metric

Method Detail

timer

Timer timer(java.lang.String name)

Creates a new Timer and registers it under the given name. If a timer with same name exists then same instance is returned

Parameters:

name - the name of the metric

Returns:

a new Timer

histogram

Histogram histogram(java.lang.String name)

Creates a new Histogram and registers it under the given name. If a histogram with same name exists then same instance is returned.

Parameters:

name - the name of the metric

Returns:

a new Histogram

counter

Counter counter(java.lang.String name)

Creates a new Counter and registers it under the given name. If a counter with same name exists then same instance is returned

Parameters:

name - the name of the metric

Returns:

a new Counter

meter

Meter meter(java.lang.String name)

Creates a new Meter and registers it under the given name. If a meter with same name exists then same instance is returned

Parameters:

name - the name of the metric

Returns:

a new Meter

adaptTo

<A> A adaptTo(java.lang.Class<A> type)

Adapts the service to the specified type. This can be used to get instance to underlying MetricRegistry

Type Parameters:

A - The type to which this metric is to be adapted.

Parameters:

type - Class object for the type to which this metric is to be adapted.

Returns:

The object, of the specified type, to which this metric has been adapted or null if this metric cannot be adapted to the specified type.