Merge "Add HotwordMetricsLogger for statistics logging." into tm-dev

/*

 * Copyright (C) 2022 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.voiceinteraction;

import com.android.internal.util.FrameworkStatsLog;

/**

 * A utility class for logging hotword statistics event.

 */

public final class HotwordMetricsLogger {

    private HotwordMetricsLogger() {

        // Class only contains static utility functions, and should not be instantiated

    }

    /**

     * Logs information related to create hotword detector.

     */

    public static void writeDetectorCreateEvent(int detectorType, boolean isCreated, int uid) {

        FrameworkStatsLog.write(FrameworkStatsLog.HOTWORD_DETECTOR_CREATE_REQUESTED, detectorType,

                isCreated, uid);

    }

    /**

     * Logs information related to hotword detection service init result.

     */

    public static void writeServiceInitResultEvent(int detectorType, int result) {

        FrameworkStatsLog.write(FrameworkStatsLog.HOTWORD_DETECTION_SERVICE_INIT_RESULT_REPORTED,

                detectorType, result);

    }

    /**

     * Logs information related to hotword detection service restarting.

     */

    public static void writeServiceRestartEvent(int detectorType, int reason) {

        FrameworkStatsLog.write(FrameworkStatsLog.HOTWORD_DETECTION_SERVICE_RESTARTED,

                detectorType, reason);

    }

    /**

     * Logs information related to keyphrase trigger.

     */

    public static void writeKeyphraseTriggerEvent(int detectorType, int result) {

        FrameworkStatsLog.write(FrameworkStatsLog.HOTWORD_DETECTOR_KEYPHRASE_TRIGGERED,

                detectorType, result);

    }

    /**

     * Logs information related to hotword detector events.

     */

    public static void writeDetectorEvent(int detectorType, int event, int uid) {

        FrameworkStatsLog.write(FrameworkStatsLog.HOTWORD_DETECTOR_EVENTS,

                detectorType, event, uid);

    }

}