Package org.apache.dubbo.metrics.collector

Interface MetricsCollector<E extends TimeCounterEvent>

All Superinterfaces:

MetricsLifeListener<E>, MetricsListener<E>

All Known Subinterfaces:

ApplicationMetricsCollector<E>, MethodMetricsCollector<E>, ServiceMetricsCollector<E>

All Known Implementing Classes:

CombMetricsCollector

@SPI
public interface MetricsCollector<E extends TimeCounterEvent>
extends MetricsLifeListener<E>

Metrics Collector. An interface of collector to collect framework internal metrics.

Method Summary

Modifier and Type	Method	Description
boolean	calSamplesChanged()	Check if samples have been changed.
List<MetricSample>	collect()	Collect metrics as MetricSample
default void	initMetrics(MetricsEvent event)
default boolean	isCollectEnabled()

Methods inherited from interface org.apache.dubbo.metrics.listener.MetricsLifeListener

onEventError, onEventFinish

Methods inherited from interface org.apache.dubbo.metrics.listener.MetricsListener

isSupport, onEvent

Method Details

isCollectEnabled

default boolean isCollectEnabled()

collect

List<MetricSample> collect()

Collect metrics as MetricSample

Returns:

List of MetricSample

calSamplesChanged

boolean calSamplesChanged()

Check if samples have been changed. Note that this method will reset the changed flag to false using CAS.

Returns:

true if samples have been changed

initMetrics

default void initMetrics(MetricsEvent event)