content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.instrumentationapi;
  
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import application.io.opentelemetry.api.trace.Span;
  import application.io.opentelemetry.context.Context;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.opentelemetry.javaagent.instrumentation.opentelemetryapi.context.AgentContextStorage;
  import io.opentelemetry.javaagent.instrumentation.opentelemetryapi.trace.Bridging;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  final class HttpRouteStateInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("application.io.opentelemetry.instrumentation.api.internal.HttpRouteState");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("update")
              .and(takesArgument(0, named("application.io.opentelemetry.context.Context")))
              .and(takesArgument(1, int.class))
              .and(takesArgument(2, String.class)),
          this.getClass().getName() + "$UpdateAdvice");
      transformer.applyAdviceToMethod(
          named("updateSpan")
              .and(takesArgument(0, named("application.io.opentelemetry.context.Context")))
              .and(takesArgument(1, named("application.io.opentelemetry.api.trace.Span"))),
          this.getClass().getName() + "$UpdateSpanAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class UpdateAdvice {
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void onEnter(
          @Advice.Argument(0) Context applicationContext,
          @Advice.Argument(1) int updatedBySourceOrder,
          @Advice.Argument(2) String route) {
  
        io.opentelemetry.context.Context agentContext =
            AgentContextStorage.getAgentContext(applicationContext);
  
        io.opentelemetry.instrumentation.api.internal.HttpRouteState agentRouteState =
            io.opentelemetry.instrumentation.api.internal.HttpRouteState.fromContextOrNull(
                agentContext);
        if (agentRouteState == null) {
          return;
        }
  
        agentRouteState.update(agentContext, updatedBySourceOrder, route);
      }
    }
  
    @SuppressWarnings("unused")
    public static class UpdateSpanAdvice {
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void onEnter(
          @Advice.Argument(0) Context applicationContext, @Advice.Argument(1) Span applicationSpan) {
  
        io.opentelemetry.context.Context agentContext =
            AgentContextStorage.getAgentContext(applicationContext);
        io.opentelemetry.instrumentation.api.internal.HttpRouteState.updateSpan(
            agentContext, Bridging.toAgentOrNull(applicationSpan));
      }
    }
  }
  