content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.spring.webflux.v5_0.server;
  
  import io.opentelemetry.instrumentation.api.incubator.semconv.code.CodeSpanNameExtractor;
  import io.opentelemetry.instrumentation.api.instrumenter.SpanNameExtractor;
  import io.opentelemetry.instrumentation.api.semconv.util.SpanNames;
  import org.springframework.web.method.HandlerMethod;
  
  public class WebfluxSpanNameExtractor implements SpanNameExtractor<Object> {
  
    private final SpanNameExtractor<Object> handlerSpanNameExtractor =
        CodeSpanNameExtractor.create(new HandlerCodeAttributesGetter());
  
    @Override
    public String extract(Object handler) {
      if (handler instanceof HandlerMethod) {
        // Special case for requests mapped with annotations
        HandlerMethod handlerMethod = (HandlerMethod) handler;
        return SpanNames.fromMethod(handlerMethod.getMethod());
      } else {
        return handlerSpanNameExtractor.extract(handler);
      }
    }
  }
  