io.quarkus.micrometer.runtime.binder.kafka

Class KafkaStreamsEventObserver

java.lang.Object

io.quarkus.micrometer.runtime.binder.kafka.KafkaStreamsEventObserver

@ApplicationScoped
public class KafkaStreamsEventObserver
extends Object

Observer to create and register KafkaStreamsMetrics. Must be separated from KafkaEventObserver, because they use different dependencies and if only "kafka-client" is used, the classes from "kafka-streams" aren't loaded.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) io.micrometer.core.instrument.binder.kafka.KafkaStreamsMetrics	kafkaStreamsMetrics
(package private) io.micrometer.core.instrument.MeterRegistry	registry

Constructor Summary

Constructors

Constructor and Description
KafkaStreamsEventObserver()

Method Summary

Modifier and Type	Method and Description
void	kafkaStreamsCreated(org.apache.kafka.streams.KafkaStreams kafkaStreams) Manage bind/close of KafkaStreamsMetrics for the specified KafkaStreams client.
(package private) void	onStop(ShutdownEvent event)
(package private) void	tryToClose(AutoCloseable c)

Methods inherited from class java.lang.Object

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

Field Detail

registry

final io.micrometer.core.instrument.MeterRegistry registry

kafkaStreamsMetrics

io.micrometer.core.instrument.binder.kafka.KafkaStreamsMetrics kafkaStreamsMetrics

Constructor Detail

KafkaStreamsEventObserver

public KafkaStreamsEventObserver()

Method Detail

kafkaStreamsCreated

public void kafkaStreamsCreated(@Observes
                                org.apache.kafka.streams.KafkaStreams kafkaStreams)

Manage bind/close of KafkaStreamsMetrics for the specified KafkaStreams client. If the kafkaStreams has not been seen before, it will be bound to the Micrometer registry and instrumented using a Kafka MeterBinder. If the kafkaStreams has been seen before, the MeterBinder will be closed.

Parameters:

kafkaStreams - Observed KafkaStreams instance

onStop

void onStop(@Observes
            ShutdownEvent event)

tryToClose

void tryToClose(AutoCloseable c)