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Commit 88a0cb33 authored by Michele Berionne's avatar Michele Berionne Committed by Chi Zhang
Browse files

Add metrics for airplane mode and modem restart 

Bug: 168242864
Test: Manual testing
Merged-In: I9bbdb5603f347d0641ecee94a32ae9e3c0d41357
Change-Id: I2532e58eadd10bbdceae6b04f79c97a5f7dee9bd
parent d3e0df84

src/java/com/android/internal/telephony/RIL.java

+6 −0
Original line number Diff line number Diff line
@@ -117,6 +117,7 @@ import com.android.internal.telephony.cat.ComprehensionTlvTag; 
import com.android.internal.telephony.cdma.CdmaInformationRecords;

import com.android.internal.telephony.cdma.CdmaSmsBroadcastConfigInfo;

import com.android.internal.telephony.gsm.SmsBroadcastConfigInfo;

import com.android.internal.telephony.metrics.ModemRestartStats;

import com.android.internal.telephony.metrics.TelephonyMetrics;

import com.android.internal.telephony.nano.TelephonyProto.SmsSession;

import com.android.internal.telephony.uicc.IccCardApplicationStatus.PersoSubState;
@@ -6441,6 +6442,11 @@ public class RIL extends BaseCommands implements CommandsInterface { 


    void writeMetricsModemRestartEvent(String reason) {

        mMetrics.writeModemRestartEvent(mPhoneId, reason);

        // Write metrics to statsd. Generate metric only when modem reset is detected by the

        // first instance of RIL to avoid duplicated events.

        if (mPhoneId == 0) {

            ModemRestartStats.onModemRestart(reason);

        }

    }



    /**

src/java/com/android/internal/telephony/metrics/AirplaneModeStats.java

0 → 100644
+118 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2020 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.internal.telephony.metrics;



import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;



import static com.android.internal.telephony.TelephonyStatsLog.AIRPLANE_MODE;



import android.content.Context;

import android.database.ContentObserver;

import android.net.Uri;

import android.os.Handler;

import android.os.Looper;

import android.os.SystemClock;

import android.provider.Settings;

import android.telephony.SubscriptionManager;



import com.android.internal.telephony.Phone;

import com.android.internal.telephony.PhoneFactory;

import com.android.internal.telephony.TelephonyStatsLog;

import com.android.telephony.Rlog;



/** Metrics for the usage of airplane mode. */

public class AirplaneModeStats extends ContentObserver {

    private static final String TAG = AirplaneModeStats.class.getSimpleName();



    /** Ignore airplane mode events occurring in the first 30 seconds. */

    private static final long GRACE_PERIOD_MILLIS = 30000L;



    /** An airplane mode toggle is considered short if under 10 seconds. */

    private static final long SHORT_TOGGLE_MILLIS = 10000L;



    private long mLastActivationTime = 0L;



    private final Context mContext;

    private final Uri mAirplaneModeSettingUri;



    public AirplaneModeStats(Context context) {

        super(new Handler(Looper.getMainLooper()));



        mContext = context;

        mAirplaneModeSettingUri = Settings.Global.getUriFor(Settings.Global.AIRPLANE_MODE_ON);



        context.getContentResolver().registerContentObserver(mAirplaneModeSettingUri, false, this);

    }



    @Override

    public void onChange(boolean selfChange, Uri uri) {

        if (uri.equals(mAirplaneModeSettingUri)) {

            onAirplaneModeChanged(isAirplaneModeOn());

        }

    }



    private boolean isAirplaneModeOn() {

        return Settings.Global.getInt(mContext.getContentResolver(),

                Settings.Global.AIRPLANE_MODE_ON, 0) != 0;

    }



    /** Generate metrics when airplane mode is enabled or disabled. */

    private void onAirplaneModeChanged(boolean isAirplaneModeOn) {

        Rlog.d(TAG, "Airplane mode change. Value: " + isAirplaneModeOn);

        long currentTime = SystemClock.elapsedRealtime();

        if (currentTime < GRACE_PERIOD_MILLIS) {

            return;

        }



        boolean isShortToggle = calculateShortToggle(currentTime, isAirplaneModeOn);

        int carrierId = getCarrierId();



        Rlog.d(TAG, "Airplane mode: " + isAirplaneModeOn + ", short=" + isShortToggle

                + ", carrierId=" + carrierId);

        TelephonyStatsLog.write(AIRPLANE_MODE, isAirplaneModeOn, isShortToggle, carrierId);

    }





    /* Keep tracks of time and returns if it was a short toggle. */

    private boolean calculateShortToggle(long currentTime, boolean isAirplaneModeOn) {

        boolean isShortToggle = false;

        if (isAirplaneModeOn) {

            // When airplane mode is enabled, track the time.

            if (mLastActivationTime == 0L) {

                mLastActivationTime = currentTime;

            }

            return false;

        } else {

            // When airplane mode is disabled, reset the time and check if it was a short toggle.

            long duration = currentTime - mLastActivationTime;

            mLastActivationTime = 0L;

            return duration > 0 && duration < SHORT_TOGGLE_MILLIS;

        }

    }



    /**

     * Returns the carrier ID of the active data subscription. If this is not available,

     * it returns the carrier ID of the first phone.

     */

    private int getCarrierId() {

        int dataSubId = SubscriptionManager.getActiveDataSubscriptionId();

        int phoneId = dataSubId != INVALID_SUBSCRIPTION_ID

                ? SubscriptionManager.getPhoneId(dataSubId) : 0;

        Phone phone = PhoneFactory.getPhone(phoneId);

        return phone != null ? phone.getCarrierId() : INVALID_SUBSCRIPTION_ID;

    }

}

src/java/com/android/internal/telephony/metrics/MetricsCollector.java

+3 −0
Original line number Diff line number Diff line
@@ -86,6 +86,7 @@ public class MetricsCollector implements StatsManager.StatsPullAtomCallback { 


    private PersistAtomsStorage mStorage;

    private final StatsManager mStatsManager;

    private final AirplaneModeStats mAirplaneModeStats;

    private static final Random sRandom = new Random();



    public MetricsCollector(Context context) {
@@ -102,6 +103,8 @@ public class MetricsCollector implements StatsManager.StatsPullAtomCallback { 
        } else {

            Rlog.e(TAG, "could not get StatsManager, atoms not registered");

        }



        mAirplaneModeStats = new AirplaneModeStats(context);

    }



    /** Replaces the {@link PersistAtomsStorage} backing the puller. Used during unit tests. */

src/java/com/android/internal/telephony/metrics/ModemRestartStats.java

0 → 100644
+79 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2020 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.internal.telephony.metrics;



import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;



import static com.android.internal.telephony.TelephonyStatsLog.MODEM_RESTART;



import android.os.Build;



import com.android.internal.telephony.Phone;

import com.android.internal.telephony.PhoneFactory;

import com.android.internal.telephony.TelephonyStatsLog;

import com.android.telephony.Rlog;



/** Metrics for the modem restarts. */

public class ModemRestartStats {

    private static final String TAG = ModemRestartStats.class.getSimpleName();



    /* Maximum length of the baseband version. */

    private static final int MAX_BASEBAND_LEN = 100;



    /* Maximum length of the modem restart reason. */

    private static final int MAX_REASON_LEN = 100;



    private ModemRestartStats() { }



    /** Generate metrics when modem restart occurs. */

    public static void onModemRestart(String reason) {

        reason = truncateString(reason, MAX_REASON_LEN);

        String basebandVersion = truncateString(Build.getRadioVersion(), MAX_BASEBAND_LEN);

        int carrierId = getCarrierId();



        Rlog.d(TAG, "Modem restart (carrier=" + carrierId + "): " + reason);

        TelephonyStatsLog.write(MODEM_RESTART, basebandVersion, reason, carrierId);

    }



    private static String truncateString(String string, int maxLen) {

        string = nullToEmpty(string);

        if (string.length() > maxLen) {

            string = string.substring(0, maxLen);

        }

        return string;

    }



    private static String nullToEmpty(String string) {

        return string != null ? string : "";

    }



    /** Returns the carrier ID of the first SIM card for which carrier ID is available. */

    private static int getCarrierId() {

        int carrierId = INVALID_SUBSCRIPTION_ID;

        try {

            for (Phone phone : PhoneFactory.getPhones()) {

                carrierId = phone.getCarrierId();

                if (carrierId != INVALID_SUBSCRIPTION_ID) {

                    break;

                }

            }

        } catch (IllegalStateException e) {

            // Nothing to do here.

        }

        return carrierId;

    }

}