Package org.apache.pulsar.functions.instance.stats

Class FunctionCollectorRegistryImpl

java.lang.Object

io.prometheus.client.CollectorRegistry

org.apache.pulsar.functions.instance.stats.FunctionCollectorRegistry

org.apache.pulsar.functions.instance.stats.FunctionCollectorRegistryImpl

public class FunctionCollectorRegistryImpl
extends FunctionCollectorRegistry

Field Summary

Fields inherited from class io.prometheus.client.CollectorRegistry

defaultRegistry

Constructor Summary

Constructors

Constructor	Description
FunctionCollectorRegistryImpl()

Method Summary

Modifier and Type	Method	Description
io.prometheus.client.Collector	registerIfNotExist(String metricName, io.prometheus.client.Collector collector)	Register a metric if it does not yet exist.

Methods inherited from class org.apache.pulsar.functions.instance.stats.FunctionCollectorRegistry

getDefaultImplementation

Methods inherited from class io.prometheus.client.CollectorRegistry

clear, filteredMetricFamilySamples, getSampleValue, getSampleValue, metricFamilySamples, register, unregister

Methods inherited from class java.lang.Object

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

Constructor Details

FunctionCollectorRegistryImpl

public FunctionCollectorRegistryImpl()

Method Details

registerIfNotExist

public io.prometheus.client.Collector registerIfNotExist(String metricName,
 io.prometheus.client.Collector collector)

Description copied from class: FunctionCollectorRegistry

Register a metric if it does not yet exist. If it does exist, then return the existing metric. Currently, only needed by the LocalRunner when running in threaded and exposing metrics via a http server. This method helps resolve the conflict in which multiple instances within the LocalRunner process try to register the same metric.

Specified by:

registerIfNotExist in class FunctionCollectorRegistry

Parameters:

metricName - the name of the metric

collector - the metric object e.g. Count, Gauge, etc.

Returns:

If the metric with the name `metricName` already exists, return the existing metric object. If not, return null