content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.instrumentation.kafkaclients.common.v0_11.internal;
  
  import io.opentelemetry.api.common.AttributeKey;
  import io.opentelemetry.api.common.AttributesBuilder;
  import io.opentelemetry.context.Context;
  import io.opentelemetry.instrumentation.api.instrumenter.AttributesExtractor;
  import javax.annotation.Nullable;
  
  enum KafkaReceiveAttributesExtractor implements AttributesExtractor<KafkaReceiveRequest, Void> {
    INSTANCE;
  
    // copied from MessagingIncubatingAttributes
    private static final AttributeKey<String> MESSAGING_KAFKA_CONSUMER_GROUP =
        AttributeKey.stringKey("messaging.kafka.consumer.group");
  
    @Override
    public void onStart(
        AttributesBuilder attributes, Context parentContext, KafkaReceiveRequest request) {
  
      String consumerGroup = request.getConsumerGroup();
      if (consumerGroup != null) {
        attributes.put(MESSAGING_KAFKA_CONSUMER_GROUP, consumerGroup);
      }
    }
  
    @Override
    public void onEnd(
        AttributesBuilder attributes,
        Context context,
        KafkaReceiveRequest request,
        @Nullable Void unused,
        @Nullable Throwable error) {}
  }
  