content: /*
   * Copyright 2024-2025 the original author or authors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.cloud.ai.tracing;
  
  import com.alibaba.cloud.ai.common.R;
  import io.micrometer.tracing.Tracer;
  import java.util.Objects;
  import org.springframework.core.MethodParameter;
  import org.springframework.http.MediaType;
  import org.springframework.http.server.ServerHttpRequest;
  import org.springframework.http.server.ServerHttpResponse;
  import org.springframework.web.bind.annotation.ControllerAdvice;
  import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;
  
  @ControllerAdvice
  public class GlobalResponseBodyAdvice implements ResponseBodyAdvice<Object> {
  
  	private final Tracer tracer;
  
  	public GlobalResponseBodyAdvice(Tracer tracer) {
  		this.tracer = tracer;
  	}
  
  	@Override
  	public boolean supports(MethodParameter returnType, Class converterType) {
  		return returnType.getParameterType().equals(R.class);
  	}
  
  	@Override
  	public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType,
  			Class selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
  		if (tracer.currentSpan() != null) {
  			String traceId = Objects.requireNonNull(tracer.currentSpan()).context().traceId();
  			R newBody = (R) body;
  			newBody.setRequestId(traceId);
  			return body;
  		}
  		else {
  			return body;
  		}
  	}
  
  }
  