content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.redisson.v3_0;
  
  import static io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge.currentContext;
  import static io.opentelemetry.javaagent.instrumentation.redisson.v3_0.RedissonSingletons.instrumenter;
  import static net.bytebuddy.matcher.ElementMatchers.isMethod;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  
  import io.opentelemetry.context.Context;
  import io.opentelemetry.context.Scope;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.opentelemetry.javaagent.instrumentation.redisson.EndOperationListener;
  import io.opentelemetry.javaagent.instrumentation.redisson.PromiseWrapper;
  import io.opentelemetry.javaagent.instrumentation.redisson.RedissonRequest;
  import java.net.InetSocketAddress;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  import org.redisson.client.RedisConnection;
  
  public class RedisConnectionInstrumentation implements TypeInstrumentation {
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("org.redisson.client.RedisConnection");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          isMethod().and(named("send")), this.getClass().getName() + "$SendAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class SendAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void onEnter(
          @Advice.This RedisConnection connection,
          @Advice.Argument(0) Object arg,
          @Advice.Local("otelRequest") RedissonRequest request,
          @Advice.Local("otelContext") Context context,
          @Advice.Local("otelScope") Scope scope) {
  
        Context parentContext = currentContext();
        InetSocketAddress remoteAddress = (InetSocketAddress) connection.getChannel().remoteAddress();
        request = RedissonRequest.create(remoteAddress, arg);
        PromiseWrapper<?> promise = request.getPromiseWrapper();
        if (promise == null) {
          return;
        }
        if (!instrumenter().shouldStart(parentContext, request)) {
          return;
        }
  
        context = instrumenter().start(parentContext, request);
        scope = context.makeCurrent();
  
        promise.setEndOperationListener(new EndOperationListener<>(instrumenter(), context, request));
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
      public static void stopSpan(
          @Advice.Thrown Throwable throwable,
          @Advice.Local("otelRequest") RedissonRequest request,
          @Advice.Local("otelContext") Context context,
          @Advice.Local("otelScope") Scope scope) {
  
        if (scope == null) {
          return;
        }
        scope.close();
  
        if (throwable != null) {
          instrumenter().end(context, request, null, throwable);
        }
        // span ended in EndOperationListener
      }
    }
  }
  