/*
|
* Copyright (C) 2016 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.systemui.classifier;
|
|
import android.app.ActivityThread;
|
import android.app.Application;
|
import android.os.Build;
|
import android.os.SystemProperties;
|
import android.util.Log;
|
|
import java.io.File;
|
import java.io.IOException;
|
import java.io.PrintWriter;
|
import java.text.SimpleDateFormat;
|
import java.util.ArrayDeque;
|
import java.util.Date;
|
import java.util.Locale;
|
|
/**
|
* Keeps track of interesting falsing data.
|
*
|
* By default the log only gets collected on userdebug builds. To turn it on on user:
|
* adb shell setprop debug.falsing_log true
|
*
|
* The log gets dumped as part of the SystemUI services. To dump on demand:
|
* adb shell dumpsys activity service com.android.systemui SystemBars | grep -A 999 FALSING | less
|
*
|
* To dump into logcat:
|
* adb shell setprop debug.falsing_logcat true
|
*
|
* To adjust the log buffer size:
|
* adb shell setprop debug.falsing_log_size 200
|
*/
|
public class FalsingLog {
|
public static final boolean ENABLED = SystemProperties.getBoolean("debug.falsing_log",
|
Build.IS_DEBUGGABLE);
|
private static final boolean LOGCAT = SystemProperties.getBoolean("debug.falsing_logcat",
|
false);
|
|
public static final boolean VERBOSE = false;
|
|
private static final int MAX_SIZE = SystemProperties.getInt("debug.falsing_log_size", 100);
|
|
private static final String TAG = "FalsingLog";
|
|
private final ArrayDeque<String> mLog = new ArrayDeque<>(MAX_SIZE);
|
private final SimpleDateFormat mFormat = new SimpleDateFormat("MM-dd HH:mm:ss", Locale.US);
|
|
private static FalsingLog sInstance;
|
|
private FalsingLog() {
|
}
|
|
public static void v(String tag, String s) {
|
if (!VERBOSE) {
|
return;
|
}
|
if (LOGCAT) {
|
Log.v(TAG, tag + "\t" + s);
|
}
|
log("V", tag, s);
|
}
|
|
public static void i(String tag, String s) {
|
if (LOGCAT) {
|
Log.i(TAG, tag + "\t" + s);
|
}
|
log("I", tag, s);
|
}
|
|
public static void wLogcat(String tag, String s) {
|
Log.w(TAG, tag + "\t" + s);
|
log("W", tag, s);
|
}
|
|
public static void w(String tag, String s) {
|
if (LOGCAT) {
|
Log.w(TAG, tag + "\t" + s);
|
}
|
log("W", tag, s);
|
}
|
|
public static void e(String tag, String s) {
|
if (LOGCAT) {
|
Log.e(TAG, tag + "\t" + s);
|
}
|
log("E", tag, s);
|
}
|
|
public static synchronized void log(String level, String tag, String s) {
|
if (!ENABLED) {
|
return;
|
}
|
if (sInstance == null) {
|
sInstance = new FalsingLog();
|
}
|
|
if (sInstance.mLog.size() >= MAX_SIZE) {
|
sInstance.mLog.removeFirst();
|
}
|
String entry = new StringBuilder().append(sInstance.mFormat.format(new Date()))
|
.append(" ").append(level).append(" ")
|
.append(tag).append(" ").append(s).toString();
|
sInstance.mLog.add(entry);
|
}
|
|
public static synchronized void dump(PrintWriter pw) {
|
pw.println("FALSING LOG:");
|
if (!ENABLED) {
|
pw.println("Disabled, to enable: setprop debug.falsing_log 1");
|
pw.println();
|
return;
|
}
|
if (sInstance == null || sInstance.mLog.isEmpty()) {
|
pw.println("<empty>");
|
pw.println();
|
return;
|
}
|
for (String s : sInstance.mLog) {
|
pw.println(s);
|
}
|
pw.println();
|
}
|
|
public static synchronized void wtf(String tag, String s, Throwable here) {
|
if (!ENABLED) {
|
return;
|
}
|
e(tag, s);
|
|
Application application = ActivityThread.currentApplication();
|
String fileMessage = "";
|
if (Build.IS_DEBUGGABLE && application != null) {
|
File f = new File(application.getDataDir(), "falsing-"
|
+ new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date()) + ".txt");
|
PrintWriter pw = null;
|
try {
|
pw = new PrintWriter(f);
|
dump(pw);
|
pw.close();
|
fileMessage = "Log written to " + f.getAbsolutePath();
|
} catch (IOException e) {
|
Log.e(TAG, "Unable to write falsing log", e);
|
} finally {
|
if (pw != null) {
|
pw.close();
|
}
|
}
|
} else {
|
Log.e(TAG, "Unable to write log, build must be debuggable.");
|
}
|
|
Log.wtf(TAG, tag + " " + s + "; " + fileMessage, here);
|
}
|
}
|
