/*
 * 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 android.os;

/**
  * Binder interface to communicate with the Java-based statistics service helper.
  * {@hide}
  */
interface IStatsCompanionService {
    /**
     * Tell statscompanion that stastd is up and running.
     */
    oneway void statsdReady();

    /**
      * Register a repeating alarm for pulling to fire at the given timestamp and every
      * intervalMs thereafter (in ms since epoch).
      * If polling alarm had already been registered, it will be replaced by new one.
      * Uses AlarmManager.setRepeating API, so if the timestamp is in past, alarm fires immediately,
      * and alarm is inexact.
      */
    oneway void setPullingAlarm(long nextPullTimeMs);

    /** Cancel any repeating pulling alarm. */
    oneway void cancelPullingAlarm();

    /**
      * Register an alarm when we want to trigger subscribers at the given
      * timestamp (in ms since epoch).
      * If an alarm had already been registered, it will be replaced by new one.
      */
    oneway void setAlarmForSubscriberTriggering(long timestampMs);

    /** Cancel any alarm for the purpose of subscriber triggering. */
    oneway void cancelAlarmForSubscriberTriggering();

    /**
     * Ask StatsCompanionService if the given permission is allowed for a particular process
     * and user ID. statsd is incapable of doing this check itself because checkCallingPermission
     * is not currently supported by libbinder_ndk.
     */
    boolean checkPermission(String permission, int pid, int uid);
}