content: /*
   * Copyright 2013-2023 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.seata.rest;
  
  import java.io.IOException;
  
  import io.seata.core.context.RootContext;
  
  import org.springframework.http.HttpRequest;
  import org.springframework.http.client.ClientHttpRequestExecution;
  import org.springframework.http.client.ClientHttpRequestInterceptor;
  import org.springframework.http.client.ClientHttpResponse;
  import org.springframework.http.client.support.HttpRequestWrapper;
  import org.springframework.util.StringUtils;
  
  /**
   * @author xiaojing
   */
  public class SeataRestTemplateInterceptor implements ClientHttpRequestInterceptor {
  
  	@Override
  	public ClientHttpResponse intercept(HttpRequest httpRequest, byte[] bytes,
  			ClientHttpRequestExecution clientHttpRequestExecution) throws IOException {
  		HttpRequestWrapper requestWrapper = new HttpRequestWrapper(httpRequest);
  
  		String xid = RootContext.getXID();
  
  		if (StringUtils.hasLength(xid)) {
  			requestWrapper.getHeaders().add(RootContext.KEY_XID, xid);
  		}
  		return clientHttpRequestExecution.execute(requestWrapper, bytes);
  	}
  
  }
  