org.springframework.boot.actuate.metrics.reader

Interface MetricReader

All Known Subinterfaces:

MetricRepository

All Known Implementing Classes:

CompositeMetricReader, InMemoryMetricRepository, MetricRegistryMetricReader, RedisMetricRepository

public interface MetricReader

A simple reader interface used to interrogate Metrics.

Author:

Dave Syer

Method Summary

Methods

Modifier and Type	Method and Description
long	count() The number of metrics known to this reader.
Iterable<Metric<?>>	findAll() Find all the metrics known to this reader.
Metric<?>	findOne(String metricName) Find an instance of the metric with the given name (usually the latest recorded value).

Method Detail

findOne

Metric<?> findOne(String metricName)

Find an instance of the metric with the given name (usually the latest recorded value).

Parameters:

metricName - the name of the metric to find

Returns:

a metric value or null if there are none with that name

findAll

Iterable<Metric<?>> findAll()

Find all the metrics known to this reader.

Returns:

all instances of metrics known to this reader

count

long count()

The number of metrics known to this reader.

Returns:

the number of metrics