content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.couchbase.v2_6;
  
  import static net.bytebuddy.matcher.ElementMatchers.isMethod;
  import static net.bytebuddy.matcher.ElementMatchers.isPublic;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import com.couchbase.client.core.message.CouchbaseRequest;
  import io.opentelemetry.context.Context;
  import io.opentelemetry.instrumentation.api.util.VirtualField;
  import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.opentelemetry.javaagent.instrumentation.couchbase.v2_0.CouchbaseRequestInfo;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  public class CouchbaseCoreInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("com.couchbase.client.core.CouchbaseCore");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          isMethod()
              .and(isPublic())
              .and(takesArgument(0, named("com.couchbase.client.core.message.CouchbaseRequest")))
              .and(named("send")),
          CouchbaseCoreInstrumentation.class.getName() + "$CouchbaseCoreAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class CouchbaseCoreAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void addOperationIdToSpan(@Advice.Argument(0) CouchbaseRequest request) {
        VirtualField<CouchbaseRequest, CouchbaseRequestInfo> virtualField =
            VirtualField.find(CouchbaseRequest.class, CouchbaseRequestInfo.class);
        CouchbaseRequestInfo requestInfo = virtualField.get(request);
        if (requestInfo != null) {
          return;
        }
  
        Context currentContext = Java8BytecodeBridge.currentContext();
        requestInfo = CouchbaseRequestInfo.get(currentContext);
        if (requestInfo != null) {
          // The scope from the initial rxJava subscribe is not available to the networking layer
          // To transfer the request info it is added to the context store
          virtualField.set(request, requestInfo);
  
          requestInfo.setOperationId(request.operationId());
        }
      }
    }
  }
  