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.druid.wall;
  
  import java.util.Date;
  import java.util.concurrent.atomic.AtomicLongFieldUpdater;
  
  public class WallDenyStat {
      private volatile long denyCount;
  
      private volatile long lastDenyTimeMillis;
  
      private volatile long resetCount;
  
      static final AtomicLongFieldUpdater<WallDenyStat> denyCountUpdater = AtomicLongFieldUpdater.newUpdater(WallDenyStat.class,
              "denyCount");
  
      static final AtomicLongFieldUpdater<WallDenyStat> resetCountUpdater = AtomicLongFieldUpdater.newUpdater(WallDenyStat.class,
              "resetCount");
  
      public long incrementAndGetDenyCount() {
          lastDenyTimeMillis = System.currentTimeMillis();
          return denyCountUpdater.incrementAndGet(this);
      }
  
      public long getDenyCount() {
          return denyCount;
      }
  
      public Date getLastDenyTime() {
          if (lastDenyTimeMillis <= 0) {
              return null;
          }
          return new Date(lastDenyTimeMillis);
      }
  
      public void reset() {
          lastDenyTimeMillis = 0;
          denyCount = 0;
          resetCountUpdater.incrementAndGet(this);
      }
  
      public long getResetCount() {
          return this.resetCount;
      }
  
  }
  