Adrian Roos | 401caae | 2016-03-04 13:35:21 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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.systemui.classifier; |
| 18 | |
| 19 | import android.app.ActivityThread; |
| 20 | import android.app.Application; |
| 21 | import android.os.Build; |
| 22 | import android.os.SystemProperties; |
| 23 | import android.util.Log; |
| 24 | |
| 25 | import java.io.File; |
| 26 | import java.io.FileNotFoundException; |
| 27 | import java.io.FileOutputStream; |
| 28 | import java.io.IOException; |
| 29 | import java.io.PrintWriter; |
| 30 | import java.text.SimpleDateFormat; |
| 31 | import java.util.ArrayDeque; |
| 32 | import java.util.Date; |
| 33 | import java.util.Locale; |
| 34 | |
| 35 | /** |
| 36 | * Keeps track of interesting falsing data. |
| 37 | * |
| 38 | * By default the log only gets collected on userdebug builds. To turn it on on user: |
| 39 | * adb shell setprop debug.falsing_log true |
| 40 | * |
| 41 | * The log gets dumped as part of the SystemUI services. To dump on demand: |
| 42 | * adb shell dumpsys activity service com.android.systemui SystemBars | grep -A 999 FALSING | less |
| 43 | * |
| 44 | * To dump into logcat: |
| 45 | * adb shell setprop debug.falsing_logcat true |
| 46 | * |
| 47 | * To adjust the log buffer size: |
| 48 | * adb shell setprop debug.falsing_log_size 200 |
| 49 | */ |
| 50 | public class FalsingLog { |
| 51 | public static final boolean ENABLED = SystemProperties.getBoolean("debug.falsing_log", |
| 52 | Build.IS_DEBUGGABLE); |
| 53 | private static final boolean LOGCAT = SystemProperties.getBoolean("debug.falsing_logcat", |
| 54 | false); |
| 55 | |
| 56 | public static final boolean VERBOSE = false; |
| 57 | |
| 58 | private static final int MAX_SIZE = SystemProperties.getInt("debug.falsing_log_size", 100); |
| 59 | |
| 60 | private static final String TAG = "FalsingLog"; |
| 61 | |
| 62 | private final ArrayDeque<String> mLog = new ArrayDeque<>(MAX_SIZE); |
| 63 | private final SimpleDateFormat mFormat = new SimpleDateFormat("MM-dd HH:mm:ss", Locale.US); |
| 64 | |
| 65 | private static FalsingLog sInstance; |
| 66 | |
| 67 | private FalsingLog() { |
| 68 | } |
| 69 | |
| 70 | public static void v(String tag, String s) { |
| 71 | if (!VERBOSE) { |
| 72 | return; |
| 73 | } |
| 74 | if (LOGCAT) { |
| 75 | Log.v(TAG, tag + "\t" + s); |
| 76 | } |
| 77 | log("V", tag, s); |
| 78 | } |
| 79 | |
| 80 | public static void i(String tag, String s) { |
| 81 | if (LOGCAT) { |
| 82 | Log.i(TAG, tag + "\t" + s); |
| 83 | } |
| 84 | log("I", tag, s); |
| 85 | } |
| 86 | |
| 87 | public static void w(String tag, String s) { |
| 88 | if (LOGCAT) { |
| 89 | Log.w(TAG, tag + "\t" + s); |
| 90 | } |
| 91 | log("W", tag, s); |
| 92 | } |
| 93 | |
| 94 | public static void e(String tag, String s) { |
| 95 | if (LOGCAT) { |
| 96 | Log.e(TAG, tag + "\t" + s); |
| 97 | } |
| 98 | log("E", tag, s); |
| 99 | } |
| 100 | |
| 101 | public static synchronized void log(String level, String tag, String s) { |
| 102 | if (!ENABLED) { |
| 103 | return; |
| 104 | } |
| 105 | if (sInstance == null) { |
| 106 | sInstance = new FalsingLog(); |
| 107 | } |
| 108 | |
| 109 | if (sInstance.mLog.size() >= MAX_SIZE) { |
| 110 | sInstance.mLog.removeFirst(); |
| 111 | } |
| 112 | String entry = new StringBuilder().append(sInstance.mFormat.format(new Date())) |
| 113 | .append(" ").append(level).append(" ") |
| 114 | .append(tag).append(" ").append(s).toString(); |
| 115 | sInstance.mLog.add(entry); |
| 116 | } |
| 117 | |
| 118 | public static synchronized void dump(PrintWriter pw) { |
| 119 | pw.println("FALSING LOG:"); |
| 120 | if (!ENABLED) { |
| 121 | pw.println("Disabled, to enable: setprop debug.falsing_log 1"); |
| 122 | pw.println(); |
| 123 | return; |
| 124 | } |
| 125 | if (sInstance == null || sInstance.mLog.isEmpty()) { |
| 126 | pw.println("<empty>"); |
| 127 | pw.println(); |
| 128 | return; |
| 129 | } |
| 130 | for (String s : sInstance.mLog) { |
| 131 | pw.println(s); |
| 132 | } |
| 133 | pw.println(); |
| 134 | } |
| 135 | |
| 136 | public static synchronized void wtf(String tag, String s) { |
| 137 | if (!ENABLED) { |
| 138 | return; |
| 139 | } |
| 140 | e(tag, s); |
| 141 | |
| 142 | Application application = ActivityThread.currentApplication(); |
| 143 | String fileMessage = ""; |
| 144 | if (Build.IS_DEBUGGABLE && application != null) { |
| 145 | File f = new File(application.getDataDir(), "falsing-" |
| 146 | + new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date()) + ".txt"); |
| 147 | PrintWriter pw = null; |
| 148 | try { |
| 149 | pw = new PrintWriter(f); |
| 150 | dump(pw); |
| 151 | pw.close(); |
| 152 | fileMessage = "Log written to " + f.getAbsolutePath(); |
| 153 | } catch (IOException e) { |
| 154 | Log.e(TAG, "Unable to write falsing log", e); |
| 155 | } finally { |
| 156 | if (pw != null) { |
| 157 | pw.close(); |
| 158 | } |
| 159 | } |
| 160 | } else { |
| 161 | Log.e(TAG, "Unable to write log, build must be debuggable."); |
| 162 | } |
| 163 | |
| 164 | Log.wtf(TAG, tag + " " + s + "; " + fileMessage); |
| 165 | } |
| 166 | } |