content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * 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.android.server.notification;
  
  
  /**
   * {@hide}
   */
  public class AlertRateLimiter {
      static final long ALLOWED_ALERT_INTERVAL = 1000;
      private long mLastNotificationMillis = 0;
  
     boolean shouldRateLimitAlert(long now) {
          final long millisSinceLast = now - mLastNotificationMillis;
          if (millisSinceLast < 0 || millisSinceLast < ALLOWED_ALERT_INTERVAL) {
              return true;
          }
          mLastNotificationMillis = now;
          return false;
      }
  }
  