KafkaEventObserver (Quarkus - Micrometer - Runtime 2.8.2.Final API)

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 Summary

Fields
Modifier and Type	Field	Description
`(package private) Map<Object,io.micrometer.core.instrument.binder.kafka.KafkaClientMetrics>`	`clientMetrics`
`(package private) io.micrometer.core.instrument.MeterRegistry`	`registry`

Constructor Summary

Constructors
Constructor Description

KafkaEventObserver()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`consumerCreated(org.apache.kafka.clients.consumer.Consumer<?,?> consumer)`	Manage bind/close of KafkaClientMetrics for the specified Consumer.
`(package private) void`	`onStop(ShutdownEvent event)`
`void`	`producerCreated(org.apache.kafka.clients.producer.Producer<?,?> producer)`	Manage bind/close of KafkaClientMetrics for the specified Producer.
`(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
```
  - clientMetrics
```
Map<Object,io.micrometer.core.instrument.binder.kafka.KafkaClientMetrics> clientMetrics
```
- Constructor Detail
  - KafkaEventObserver
```
public KafkaEventObserver()
```
- Method Detail
  - 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)
```