content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.mybatis.v3_2;
  
  import static io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge.currentContext;
  import static io.opentelemetry.javaagent.instrumentation.mybatis.v3_2.MyBatisSingletons.instrumenter;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  
  import io.opentelemetry.context.Context;
  import io.opentelemetry.context.Scope;
  import io.opentelemetry.instrumentation.api.incubator.semconv.util.ClassAndMethod;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  import org.apache.ibatis.binding.MapperMethod.SqlCommand;
  
  public class MapperMethodInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("org.apache.ibatis.binding.MapperMethod");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("execute"), MapperMethodInstrumentation.class.getName() + "$ExecuteAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class ExecuteAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void getMapperInfo(
          @Advice.FieldValue("command") SqlCommand command,
          @Advice.Local("otelRequest") ClassAndMethod request,
          @Advice.Local("otelContext") Context context,
          @Advice.Local("otelScope") Scope scope) {
        if (command == null) {
          return;
        }
        request = SqlCommandUtil.getClassAndMethod(command);
        if (request == null) {
          return;
        }
        Context parentContext = currentContext();
        if (!instrumenter().shouldStart(parentContext, request)) {
          return;
        }
        context = instrumenter().start(parentContext, request);
        scope = context.makeCurrent();
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
      public static void stopSpan(
          @Advice.Thrown Throwable throwable,
          @Advice.Local("otelRequest") ClassAndMethod request,
          @Advice.Local("otelContext") Context context,
          @Advice.Local("otelScope") Scope scope) {
        if (scope != null) {
          scope.close();
          instrumenter().end(context, request, null, throwable);
        }
      }
    }
  }
  