content: /*
   * Copyright 1999-2018 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
   *
   *      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.alibaba.csp.sentinel.adapter.gateway.zuul.filters;
  
  import com.alibaba.csp.sentinel.adapter.gateway.zuul.constants.ZuulConstant;
  
  import com.netflix.zuul.ZuulFilter;
  import com.netflix.zuul.exception.ZuulException;
  
  import static com.alibaba.csp.sentinel.adapter.gateway.zuul.constants.ZuulConstant.SEND_RESPONSE_FILTER_ORDER;
  
  /**
   * This filter will mark complete and exit {@link com.alibaba.csp.sentinel.Entry}.
   *
   * @author tiger
   * @author Eric Zhao
   */
  public class SentinelZuulPostFilter extends ZuulFilter {
  
      private final int order;
  
      public SentinelZuulPostFilter() {
          this(SEND_RESPONSE_FILTER_ORDER);
      }
  
      public SentinelZuulPostFilter(int order) {
          this.order = order;
      }
  
      @Override
      public String filterType() {
          return ZuulConstant.POST_TYPE;
      }
  
      @Override
      public int filterOrder() {
          return order;
      }
  
      @Override
      public boolean shouldFilter() {
          return true;
      }
  
      @Override
      public Object run() throws ZuulException {
          // Exit the entries in order.
          // The entries can be retrieved from the request context.
          SentinelEntryUtils.tryExitFromCurrentContext();
          return null;
      }
  }
  