/*
 *    Copyright (c) 2018-2025, lengleng All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * Neither the name of the pig4cloud.com developer nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * Author: lengleng (wangiegie@gmail.com)
 */

package com.pig4cloud.pigx.common.gray.feign;

import cn.hutool.core.util.StrUtil;
import com.pig4cloud.pigx.common.core.constant.CommonConstants;
import com.pig4cloud.pigx.common.core.util.WebUtils;
import com.pig4cloud.pigx.common.gray.support.NonWebVersionContextHolder;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import lombok.extern.slf4j.Slf4j;

/**
 * @author lengleng
 * @date 2020/1/12
 * <p>
 * feign 请求VERSION 传递
 */
@Slf4j
public class GrayFeignRequestInterceptor implements RequestInterceptor {

	/**
	 * Called for every request. Add data using methods on the supplied
	 * {@link RequestTemplate}.
	 * @param template
	 */
	@Override
	public void apply(RequestTemplate template) {
		String reqVersion = WebUtils.getRequest() != null ? WebUtils.getRequest().getHeader(CommonConstants.VERSION)
				: NonWebVersionContextHolder.getVersion();

		if (StrUtil.isNotBlank(reqVersion)) {
			log.debug("feign gray add header version :{}", reqVersion);
			template.header(CommonConstants.VERSION, reqVersion);
		}
	}

}
