content: /*
   * Copyright 1999-2021 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.demo.slot;
  
  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.ResourceWrapper;
  import com.alibaba.csp.sentinel.slots.block.degrade.DegradeSlot;
  import com.alibaba.csp.sentinel.slots.block.flow.FlowSlot;
  import com.alibaba.csp.sentinel.spi.Spi;
  
  /**
   * A demo slot that records current context and entry resource.
   *
   * Note that the value of order attribute in `@Spi` is -1500, the smaller the value, the higher the order,
   * so this slot will be executed after {@link FlowSlot}(order=-2000) and before {@link DegradeSlot}(order=-1000),
   * refer to the constants for slot order definitions in {@link Constants}.
   *
   * @author Eric Zhao
   * @author cdfive
   */
  @Spi(order = -1500)
  public class DemoSlot extends AbstractLinkedProcessorSlot<DefaultNode> {
  
      @Override
      public void entry(Context context, ResourceWrapper resourceWrapper, DefaultNode node, int count, boolean prioritized, Object... args)
              throws Throwable {
          System.out.println("------Entering for entry on DemoSlot------");
          System.out.println("Current context: " + context.getName());
          System.out.println("Current entry resource: " + context.getCurEntry().getResourceWrapper().getName());
  
          fireEntry(context, resourceWrapper, node, count, prioritized, args);
      }
  
      @Override
      public void exit(Context context, ResourceWrapper resourceWrapper, int count, Object... args) {
          System.out.println("------Exiting for entry on DemoSlot------");
          System.out.println("Current context: " + context.getName());
          System.out.println("Current entry resource: " + context.getCurEntry().getResourceWrapper().getName());
  
          fireExit(context, resourceWrapper, count, args);
      }
  }
  