为spring-kafka创建的所有MessageListenerContainers设置RecordInterceptor,可以通过以下步骤实现:
以下是一个示例代码:
import org.apache.kafka.clients.consumer.ConsumerInterceptor;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.OffsetAndMetadata;
import org.apache.kafka.common.TopicPartition;
import org.springframework.kafka.config.KafkaListenerEndpointRegistry;
import org.springframework.kafka.listener.MessageListenerContainer;
import org.springframework.kafka.listener.RecordInterceptor;
import org.springframework.stereotype.Component;
import java.util.Map;
@Component
public class CustomKafkaListenerConfigurer implements KafkaListenerConfigurer {
private final KafkaListenerEndpointRegistry endpointRegistry;
public CustomKafkaListenerConfigurer(KafkaListenerEndpointRegistry endpointRegistry) {
this.endpointRegistry = endpointRegistry;
}
@Override
public void configureKafkaListeners(KafkaListenerEndpointRegistrar registrar) {
Map<String, MessageListenerContainer> containers = endpointRegistry.getListenerContainers();
for (MessageListenerContainer container : containers.values()) {
container.setRecordInterceptor(new CustomRecordInterceptor());
}
}
private static class CustomRecordInterceptor<K, V> implements RecordInterceptor<K, V> {
@Override
public ConsumerRecords<K, V> onConsume(ConsumerRecords<K, V> records) {
// 在消息被消费之前的处理逻辑
// 可以对消息进行修改或者添加额外的处理逻辑
return records;
}
@Override
public void onCommit(Map<TopicPartition, OffsetAndMetadata> offsets) {
// 在消息被提交之前的处理逻辑
// 可以添加额外的提交逻辑
}
}
}
请注意,上述示例代码中的CustomKafkaListenerConfigurer类需要通过构造函数注入KafkaListenerEndpointRegistry对象,以获取所有的MessageListenerContainers。另外,CustomRecordInterceptor类是一个静态内部类,用于实现RecordInterceptor接口。
这样,为spring-kafka创建的所有MessageListenerContainers就设置了自定义的RecordInterceptor。你可以根据实际需求在CustomRecordInterceptor类中实现相应的逻辑。
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