/*
 * Copyright (c) 2020 pig4cloud Authors. All Rights Reserved.
 *
 * 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
 *
 *     http://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.pig4cloud.pig.common.sentinel.parser;

import com.alibaba.csp.sentinel.adapter.spring.webmvc.callback.RequestOriginParser;

import javax.servlet.http.HttpServletRequest;

/**
 * sentinel 请求头解析判断
 *
 * @author lengleng
 * @date 2020-06-11
 */
public class PigHeaderRequestOriginParser implements RequestOriginParser {

	/**
	 * 请求头获取allow
	 */
	private static final String ALLOW = "Allow";

	/**
	 * Parse the origin from given HTTP request.
	 * @param request HTTP request
	 * @return parsed origin
	 */
	@Override
	public String parseOrigin(HttpServletRequest request) {
		return request.getHeader(ALLOW);
	}

}
