我可以在運行時向 spring-kafka 中的生產者和消費者提供配置詳細信息嗎？

Question

我們正在使用 spring 引導將我們的項目遷移到微服務。 我有一個要求，我應該能夠使用用戶在運行時提供的配置詳細信息（例如引導服務器和鍵值 serdes）來運行生產者和消費者。

I was able to do this using java Apache Kafka API in the earlier project but I don't see any way to do this using spring-kafka API as it allows to define the producer or consumer related configuration only via Spring java configuration class or application 。特性。

Answer 1

您可以在運行時為消費者和生產者覆蓋您想要的任何屬性。

使用ConcurrentKafkaListenerContainerFactory創建監聽器容器：

@Autowired
ConcurrentKafkaListenerContainerFactory<String, String> factory;

...

    ConcurrentMessageListenerContainer<String, String> container = factory.createContainer("someTopic");
    container.getContainerProperties()
            .getKafkaConsumerProperties()
            .setProperty(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "...");
    ...
    container.getContainerProperties().setMessageListener(someListener);
    container.start();

在生產者端，使用這個構造函數：

/**
 * Create an instance using the supplied producer factory and properties, with
 * autoFlush false. If the configOverrides is not null or empty, a new
 * {@link DefaultKafkaProducerFactory} will be created with merged producer properties
 * with the overrides being applied after the supplied factory's properties.
 * @param producerFactory the producer factory.
 * @param configOverrides producer configuration properties to override.
 * @since 2.5
 */
public KafkaTemplate(ProducerFactory<K, V> producerFactory, @Nullable Map<String, Object> configOverrides) {
    this(producerFactory, false, configOverrides);
}