content: /*
   * Copyright 1999-2019 Alibaba Group Holding Ltd.
   *
   * 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.csp.sentinel.adapter.gateway.zuul;
  
  import javax.servlet.http.Cookie;
  
  import com.alibaba.csp.sentinel.adapter.gateway.common.param.RequestItemParser;
  
  import com.netflix.zuul.context.RequestContext;
  
  /**
   * @author Eric Zhao
   * @since 1.6.0
   */
  public class RequestContextItemParser implements RequestItemParser<RequestContext> {
  
      @Override
      public String getPath(RequestContext requestContext) {
          return requestContext.getRequest().getServletPath();
      }
  
      @Override
      public String getRemoteAddress(RequestContext requestContext) {
          return requestContext.getRequest().getRemoteAddr();
      }
  
      @Override
      public String getHeader(RequestContext requestContext, String headerKey) {
          return requestContext.getRequest().getHeader(headerKey);
      }
  
      @Override
      public String getUrlParam(RequestContext requestContext, String paramName) {
          return requestContext.getRequest().getParameter(paramName);
      }
  
      @Override
      public String getCookieValue(RequestContext requestContext, String cookieName) {
          Cookie[] cookies = requestContext.getRequest().getCookies();
          if (cookies == null || cookieName == null) {
              return null;
          }
          for (Cookie cookie : cookies) {
              if (cookie != null && cookieName.equals(cookie.getName())) {
                  return cookie.getValue();
              }
          }
          return null;
      }
  }
  