| /* |
| * 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; |
| } |
| } |