/**
* The call() method that broadcast intents before the measurement starts and after the
* measurement finishes.
*/
@Override
public MeasurementResult call() throws MeasurementError {
MeasurementResult result = null;
sendStringMsg("Running:\n" + realTask.toString());
try {
PhoneUtils.getPhoneUtils().acquireWakeLock();
setCurrentTask(realTask);
broadcastMeasurementStart();
result = realTask.call();
} finally {
setCurrentTask(null);
broadcastMeasurementEnd(result);
PhoneUtils.getPhoneUtils().releaseWakeLock();
sendStringMsg("Done running:\n" + realTask.toString());
persistState();
}
return result;
}
@Override
public void run() {
Logger.i("checking Speedometer service for new tasks");
lastCheckinTime = Calendar.getInstance();
try {
persistState();
uploadResults();
getTasksFromServer();
// Also reset checkin if we get a success
resetCheckin();
// Schedule the new tasks
handleMeasurement();
} catch (Exception e) {
/*
* Executor stops all subsequent execution of a periodic task if a raised
* exception is uncaught. We catch all undeclared exceptions here
*/
Logger.e("Unexpected exceptions caught", e);
if (checkinRetryCnt > Config.MAX_CHECKIN_RETRY_COUNT) {
/* If we have retried more than MAX_CHECKIN_RETRY_COUNT times upon a checkin failure,
* we will stop retrying and wait until the next checkin period*/
resetCheckin();
} else if (checkinRetryIntervalSec < checkinIntervalSec) {
Logger.i("Retrying checkin in " + checkinRetryIntervalSec + " seconds");
/* Use checkinRetryIntentSender so that the periodic checkin schedule will
* remain intact
*/
checkinRetryIntentSender =
PendingIntent.getBroadcast(
MeasurementScheduler.this,
0,
new UpdateIntent("", UpdateIntent.CHECKIN_RETRY_ACTION),
PendingIntent.FLAG_CANCEL_CURRENT);
alarmManager.set(
AlarmManager.RTC_WAKEUP,
System.currentTimeMillis() + checkinRetryIntervalSec * 1000,
checkinRetryIntentSender);
checkinRetryCnt++;
checkinRetryIntervalSec =
Math.min(Config.MAX_CHECKIN_RETRY_INTERVAL_SEC, checkinRetryIntervalSec * 2);
}
} finally {
PhoneUtils.getPhoneUtils().releaseWakeLock();
updateStatus();
}
}
/** Perform a checkin operation. */
public void handleCheckin(boolean force) {
if (!userConsented()) {
Logger.i("Skipping checkin - User has not consented");
return;
}
if (!force && isPauseRequested()) {
sendStringMsg("Skipping checkin - app is paused");
return;
}
if (!force && !powerManager.canScheduleExperiment()) {
sendStringMsg("Skipping checkin - below battery threshold");
return;
}
/* The CPU can go back to sleep immediately after onReceive() returns. Acquire
* the wake lock for the new thread here and release the lock when the thread finishes
*/
PhoneUtils.getPhoneUtils().acquireWakeLock();
new Thread(checkinTask).start();
}
// Service objects are by nature singletons enforced by Android
@Override
public void onCreate() {
Logger.d("Service onCreate called");
PhoneUtils.setGlobalContext(this.getApplicationContext());
phoneUtils = PhoneUtils.getPhoneUtils();
phoneUtils.registerSignalStrengthListener();
this.checkin = new Checkin(this);
this.checkinRetryIntervalSec = Config.MIN_CHECKIN_RETRY_INTERVAL_SEC;
this.checkinRetryCnt = 0;
this.checkinTask = new CheckinTask();
this.pauseRequested = true;
this.stopRequested = false;
this.measurementExecutor = Executors.newSingleThreadExecutor();
this.taskQueue =
new PriorityBlockingQueue<MeasurementTask>(
Config.MAX_TASK_QUEUE_SIZE, new TaskComparator());
this.pendingTasks = new ConcurrentHashMap<MeasurementTask, Future<MeasurementResult>>();
this.notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
this.alarmManager = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
this.powerManager = new BatteryCapPowerManager(Config.DEFAULT_BATTERY_THRESH_PRECENT, this);
restoreState();
// Register activity specific BroadcastReceiver here
IntentFilter filter = new IntentFilter();
filter.addAction(UpdateIntent.PREFERENCE_ACTION);
filter.addAction(UpdateIntent.MSG_ACTION);
filter.addAction(UpdateIntent.CHECKIN_ACTION);
filter.addAction(UpdateIntent.CHECKIN_RETRY_ACTION);
filter.addAction(UpdateIntent.MEASUREMENT_ACTION);
filter.addAction(UpdateIntent.MEASUREMENT_PROGRESS_UPDATE_ACTION);
broadcastReceiver =
new BroadcastReceiver() {
// Handles various broadcast intents.
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(UpdateIntent.PREFERENCE_ACTION)) {
updateFromPreference();
} else if (intent.getAction().equals(UpdateIntent.CHECKIN_ACTION)
|| intent.getAction().equals(UpdateIntent.CHECKIN_RETRY_ACTION)) {
Logger.d("Checkin intent received");
handleCheckin(false);
} else if (intent.getAction().equals(UpdateIntent.MEASUREMENT_ACTION)) {
Logger.d("MeasurementIntent intent received");
handleMeasurement();
} else if (intent.getAction().equals(UpdateIntent.MEASUREMENT_PROGRESS_UPDATE_ACTION)) {
Logger.d("MeasurementIntent update intent received");
if (intent.getIntExtra(UpdateIntent.PROGRESS_PAYLOAD, Config.INVALID_PROGRESS)
== Config.MEASUREMENT_END_PROGRESS) {
if (intent.getStringExtra(UpdateIntent.ERROR_STRING_PAYLOAD) != null) {
failedMeasurementCnt++;
} else {
completedMeasurementCnt++;
}
updateResultsConsole(intent);
}
} else if (intent.getAction().equals(UpdateIntent.MSG_ACTION)) {
String msg = intent.getExtras().getString(UpdateIntent.STRING_PAYLOAD);
Date now = Calendar.getInstance().getTime();
insertStringToConsole(systemConsole, now + "\n\n" + msg);
}
}
};
this.registerReceiver(broadcastReceiver, filter);
// TODO(mdw): Make this a user-selectable option
// startSpeedomterInForeGround();
}