1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.networkstack.metrics; 18 19 import android.annotation.NonNull; 20 import android.annotation.Nullable; 21 import android.net.captiveportal.CaptivePortalProbeResult; 22 import android.util.Log; 23 24 import com.android.internal.util.HexDump; 25 import com.android.server.connectivity.nano.DataStallEventProto; 26 27 /** 28 * Collection of utilities for data stall metrics. 29 * 30 * To see if the logs are properly sent to statsd, execute following command. 31 * 32 * $ adb shell cmd stats print-logs 33 * $ adb logcat | grep statsd OR $ adb logcat -b stats 34 * 35 * @hide 36 */ 37 public class DataStallStatsUtils { 38 private static final String TAG = DataStallStatsUtils.class.getSimpleName(); 39 private static final boolean DBG = false; 40 probeResultToEnum(@ullable final CaptivePortalProbeResult result)41 private static int probeResultToEnum(@Nullable final CaptivePortalProbeResult result) { 42 if (result == null) return DataStallEventProto.INVALID; 43 44 if (result.isSuccessful()) { 45 return DataStallEventProto.VALID; 46 } else if (result.isPortal()) { 47 return DataStallEventProto.PORTAL; 48 } else if (result.isPartialConnectivity()) { 49 return DataStallEventProto.PARTIAL; 50 } else { 51 return DataStallEventProto.INVALID; 52 } 53 } 54 55 /** 56 * Write the metric to {@link StatsLog}. 57 */ write(@onNull final DataStallDetectionStats stats, @NonNull final CaptivePortalProbeResult result)58 public static void write(@NonNull final DataStallDetectionStats stats, 59 @NonNull final CaptivePortalProbeResult result) { 60 int validationResult = probeResultToEnum(result); 61 if (DBG) { 62 Log.d(TAG, "write: " + stats + " with result: " + validationResult 63 + ", dns: " + HexDump.toHexString(stats.mDns)); 64 } 65 NetworkStackStatsLog.write(NetworkStackStatsLog.DATA_STALL_EVENT, 66 stats.mEvaluationType, 67 validationResult, 68 stats.mNetworkType, 69 stats.mWifiInfo, 70 stats.mCellularInfo, 71 stats.mDns); 72 } 73 } 74