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.slots.block.flow;
  
  import com.alibaba.csp.sentinel.node.Node;
  
  /**
   * A universal interface for traffic shaping controller.
   *
   * @author jialiang.linjl
   */
  public interface TrafficShapingController {
  
      /**
       * Check whether given resource entry can pass with provided count.
       *
       * @param node resource node
       * @param acquireCount count to acquire
       * @param prioritized whether the request is prioritized
       * @return true if the resource entry can pass; false if it should be blocked
       */
      boolean canPass(Node node, int acquireCount, boolean prioritized);
  
      /**
       * Check whether given resource entry can pass with provided count.
       *
       * @param node resource node
       * @param acquireCount count to acquire
       * @return true if the resource entry can pass; false if it should be blocked
       */
      boolean canPass(Node node, int acquireCount);
  }
  