content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.vertx.kafka.v3_6;
  
  import static net.bytebuddy.matcher.ElementMatchers.isPrivate;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
  
  import io.opentelemetry.javaagent.bootstrap.kafka.KafkaClientsConsumerProcessTracing;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.vertx.core.Handler;
  import io.vertx.kafka.client.consumer.impl.KafkaReadStreamImpl;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  import org.apache.kafka.clients.consumer.ConsumerRecord;
  import org.apache.kafka.clients.consumer.ConsumerRecords;
  
  public class KafkaReadStreamImplInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("io.vertx.kafka.client.consumer.impl.KafkaReadStreamImpl");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("handler")
              .and(takesArguments(1))
              .and(takesArgument(0, named("io.vertx.core.Handler"))),
          this.getClass().getName() + "$HandlerAdvice");
      transformer.applyAdviceToMethod(
          named("batchHandler")
              .and(takesArguments(1))
              .and(takesArgument(0, named("io.vertx.core.Handler"))),
          this.getClass().getName() + "$BatchHandlerAdvice");
      transformer.applyAdviceToMethod(
          named("run").and(isPrivate()), this.getClass().getName() + "$RunAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class HandlerAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static <K, V> void onEnter(
          @Advice.This KafkaReadStreamImpl<K, V> readStream,
          @Advice.Argument(value = 0, readOnly = false) Handler<ConsumerRecord<K, V>> handler) {
  
        handler = new InstrumentedSingleRecordHandler<>(handler);
      }
    }
  
    @SuppressWarnings("unused")
    public static class BatchHandlerAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static <K, V> void onEnter(
          @Advice.This KafkaReadStreamImpl<K, V> readStream,
          @Advice.Argument(value = 0, readOnly = false) Handler<ConsumerRecords<K, V>> handler) {
  
        handler = new InstrumentedBatchRecordsHandler<>(handler);
      }
    }
  
    // this advice suppresses the CONSUMER spans created by the kafka-clients instrumentation
    @SuppressWarnings("unused")
    public static class RunAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static boolean onEnter() {
        return KafkaClientsConsumerProcessTracing.setEnabled(false);
      }
  
      @Advice.OnMethodExit(suppress = Throwable.class)
      public static void onExit(@Advice.Enter boolean previousValue) {
        KafkaClientsConsumerProcessTracing.setEnabled(previousValue);
      }
    }
  }
  