Package io.quarkus.micrometer.runtime.binder.kafka

Class KafkaEventObserver

java.lang.Object
io.quarkus.micrometer.runtime.binder.kafka.KafkaEventObserver
@ApplicationScoped public class KafkaEventObserver extends Object
Observer to create and register KafkaClientMetrics. This observer uses only classes from "kafka-clients" and none from "kafka-streams". Must be separated from KafkaStreamsEventObserver, because they use different dependencies and if only kafka-client is used, the classes from kafka-streams aren't loaded.

  • Field Details

    • registry

      final io.micrometer.core.instrument.MeterRegistry registry

    • clientMetrics

      Map<Object,io.micrometer.core.instrument.binder.kafka.KafkaClientMetrics> clientMetrics

  • Constructor Details

    • KafkaEventObserver

      public KafkaEventObserver()

  • Method Details

    • consumerCreated

      public void consumerCreated(@Observes org.apache.kafka.clients.consumer.Consumer<?,?> consumer)
      Manage bind/close of KafkaClientMetrics for the specified Consumer. If the consumer has not been seen before, it will be bound to the Micrometer registry and instrumented using a Kafka MeterBinder. If the consumer has been seen before, the MeterBinder will be closed.
      Parameters:
      consumer - Observed Kafka Consumer

    • producerCreated

      public void producerCreated(@Observes org.apache.kafka.clients.producer.Producer<?,?> producer)
      Manage bind/close of KafkaClientMetrics for the specified Producer. If the producer has not been seen before, it will be bound to the Micrometer registry and instrumented using a Kafka MeterBinder. If the producer has been seen before, the MeterBinder will be closed.
      Parameters:
      producer - Observed Kafka Producer

    • onStop

      void onStop(@Observes ShutdownEvent event)

    • tryToClose

      void tryToClose(AutoCloseable c)