private static void scheduleLaunchTask(
Context context, GcmNetworkManager scheduler, long minDelayMs) {
// Google Play Services may not be up to date, if the application was not installed through
// the Play Store. In this case, scheduling the task will fail silently.
final long minDelaySecs = minDelayMs / 1000;
OneoffTask oneoff =
new OneoffTask.Builder()
.setService(BackgroundSyncLauncherService.class)
.setTag("BackgroundSync Event")
// We have to set a non-zero execution window here
.setExecutionWindow(minDelaySecs, minDelaySecs + 1)
.setRequiredNetwork(Task.NETWORK_STATE_CONNECTED)
.setPersisted(true)
.setUpdateCurrent(true)
.build();
try {
scheduler.schedule(oneoff);
recordBooleanHistogram("BackgroundSync.LaunchTask.ScheduleSuccess", true);
} catch (IllegalArgumentException e) {
// Log the occurrence so that we can keep track of how often this is happening, and
// disable GCM for the remainder of this session.
setGCMEnabled(false);
recordBooleanHistogram("BackgroundSync.LaunchTask.ScheduleSuccess", false);
}
}
private void cancelTask(String tag) {
mScheduler.cancelTask(tag, TaskSchedulerService.class);
TaskTracker task = mTasks.getTask(tag);
if (task != null) {
task.cancel();
mTasks.updateTask(task);
}
refresh();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
View view = inflater.inflate(R.layout.fragment_network_scheduler, container, false);
view.findViewById(R.id.scheduler_about_apis).setOnClickListener(this);
view.findViewById(R.id.scheduler_add_oneoff).setOnClickListener(this);
view.findViewById(R.id.scheduler_add_periodic).setOnClickListener(this);
mScheduler = GcmNetworkManager.getInstance(getActivity());
mTasks = TaskCollection.getInstance(getActivity());
return view;
}
private static void removeScheduledTasks(GcmNetworkManager scheduler) {
try {
scheduler.cancelAllTasks(BackgroundSyncLauncherService.class);
recordBooleanHistogram("BackgroundSync.LaunchTask.CancelSuccess", true);
} catch (IllegalArgumentException e) {
// This occurs when BackgroundSyncLauncherService is not found in the application
// manifest. This should not happen in code that reaches here, but has been seen in
// the past. See https://crbug.com/548314
// Log the occurrence so that we can keep track of how often this is happening, and
// disable GCM for the remainder of this session.
setGCMEnabled(false);
recordBooleanHistogram("BackgroundSync.LaunchTask.CancelSuccess", false);
}
}
/**
* Reschedule any required background sync tasks, if they have been removed due to an application
* upgrade.
*
* <p>This method checks the saved preferences, and reschedules the sync tasks as appropriate to
* match the preferences. This method is static so that it can be run without actually
* instantiating a BackgroundSyncLauncher.
*/
protected static void rescheduleTasksOnUpgrade(final Context context) {
final GcmNetworkManager scheduler = GcmNetworkManager.getInstance(context);
BackgroundSyncLauncher.ShouldLaunchCallback callback =
new BackgroundSyncLauncher.ShouldLaunchCallback() {
@Override
public void run(Boolean shouldLaunch) {
if (shouldLaunch) {
// It's unclear what time the sync event was supposed to fire, so fire
// without delay and let the browser reschedule if necessary.
scheduleLaunchTask(context, scheduler, 0);
}
}
};
BackgroundSyncLauncher.shouldLaunchBrowserIfStopped(context, callback);
}
private void addPeriodic(
long periodSecs, long flexSecs, int connectivity, boolean charging, boolean persistence) {
if (flexSecs > periodSecs) {
Toast.makeText(getActivity(), getString(R.string.scheduler_error_flex), Toast.LENGTH_SHORT)
.show();
return;
}
String tag = Long.toString(SystemClock.currentThreadTimeMillis());
final TaskTracker taskTracker = TaskTracker.createPeriodic(tag, periodSecs, flexSecs);
PeriodicTask periodic =
new PeriodicTask.Builder()
.setService(TaskSchedulerService.class)
.setPeriod(periodSecs)
.setFlex(flexSecs)
.setTag(tag)
.setRequiredNetwork(connectivity)
.setRequiresCharging(charging)
.setPersisted(persistence)
.build();
mScheduler.schedule(periodic);
mTasks.updateTask(taskTracker);
}
private void addOneOff(long winStartSecs, long winEndSecs, int connectivity, boolean charging) {
if (winStartSecs > winEndSecs) {
Toast.makeText(getActivity(), getString(R.string.scheduler_error_window), Toast.LENGTH_SHORT)
.show();
return;
}
String tag = Long.toString(SystemClock.currentThreadTimeMillis());
final long elapsedNowSeconds = SystemClock.elapsedRealtime() / 1000;
final TaskTracker taskTracker =
TaskTracker.createOneoff(
tag, elapsedNowSeconds + winStartSecs, elapsedNowSeconds + winEndSecs);
OneoffTask oneOff =
new OneoffTask.Builder()
.setService(TaskSchedulerService.class)
.setTag(tag)
.setExecutionWindow(winStartSecs, winEndSecs)
.setRequiredNetwork(connectivity)
// Persistence not yet support for Oneoffs.
.setRequiresCharging(charging)
.build();
mScheduler.schedule(oneOff);
mTasks.updateTask(taskTracker);
}
protected BackgroundSyncLauncher(Context context) {
mScheduler = GcmNetworkManager.getInstance(context);
launchBrowserIfStopped(context, false, 0);
}
