studio.raptor.sqlparser.wall.WallDenyStat Maven / Gradle / Ivy

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/*
 * Copyright 1999-2017 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 studio.raptor.sqlparser.wall;

import java.util.Date;
import java.util.concurrent.atomic.AtomicLongFieldUpdater;

public class WallDenyStat {

  final static AtomicLongFieldUpdater denyCountUpdater = AtomicLongFieldUpdater
      .newUpdater(WallDenyStat.class,
          "denyCount");
  final static AtomicLongFieldUpdater resetCountUpdater = AtomicLongFieldUpdater
      .newUpdater(WallDenyStat.class,
          "resetCount");
  private volatile long denyCount;
  private volatile long lastDenyTimeMillis;
  private volatile long 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;
  }

}