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.system;
  
  import com.alibaba.csp.sentinel.Constants;
  import com.alibaba.csp.sentinel.context.Context;
  import com.alibaba.csp.sentinel.node.DefaultNode;
  import com.alibaba.csp.sentinel.slotchain.AbstractLinkedProcessorSlot;
  import com.alibaba.csp.sentinel.slotchain.ProcessorSlot;
  import com.alibaba.csp.sentinel.slotchain.ResourceWrapper;
  import com.alibaba.csp.sentinel.spi.Spi;
  
  /**
   * A {@link ProcessorSlot} that dedicates to {@link SystemRule} checking.
   *
   * @author jialiang.linjl
   * @author leyou
   */
  @Spi(order = Constants.ORDER_SYSTEM_SLOT)
  public class SystemSlot extends AbstractLinkedProcessorSlot<DefaultNode> {
  
      @Override
      public void entry(Context context, ResourceWrapper resourceWrapper, DefaultNode node, int count,
                        boolean prioritized, Object... args) throws Throwable {
          SystemRuleManager.checkSystem(resourceWrapper, count);
          fireEntry(context, resourceWrapper, node, count, prioritized, args);
      }
  
      @Override
      public void exit(Context context, ResourceWrapper resourceWrapper, int count, Object... args) {
          fireExit(context, resourceWrapper, count, args);
      }
  
  }
  