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Fix #4296 + download UI improvement + fixes #4369

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Fix #4296 + download UI improvement + fixes #4369

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0cb7910
Creation of PhotoManagerSafe + lock in LocalSyncService + improved do…
simondubrulle Dec 10, 2024
9658cde
Fixed incoherent message format in download dialog
simondubrulle Dec 10, 2024
e9a8449
Implemented first PR feedbacks: removed PhotoManagerSafe not needded …
simondubrulle Dec 11, 2024
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89 changes: 51 additions & 38 deletions mobile/lib/services/local_sync_service.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ import "package:photos/utils/debouncer.dart";
import "package:photos/utils/photo_manager_util.dart";
import "package:photos/utils/sqlite_util.dart";
import 'package:shared_preferences/shared_preferences.dart';
import 'package:synchronized/synchronized.dart';
import 'package:tuple/tuple.dart';

class LocalSyncService {
Expand All @@ -31,6 +32,7 @@ class LocalSyncService {
late SharedPreferences _prefs;
Completer<void>? _existingSync;
late Debouncer _changeCallbackDebouncer;
final Lock _lock = Lock();

static const kDbUpdationTimeKey = "db_updation_time";
static const kHasCompletedFirstImportKey = "has_completed_firstImport";
Expand Down Expand Up @@ -77,50 +79,57 @@ class LocalSyncService {
}
_existingSync = Completer<void>();
final int ownerID = Configuration.instance.getUserID()!;
final existingLocalFileIDs = await _db.getExistingLocalFileIDs(ownerID);
_logger.info("${existingLocalFileIDs.length} localIDs were discovered");

// We use a lock to prevent synchronisation to occur while it is downloading
// as this introduces wrong entry in FilesDB due to race condition
// This is a fix for https://github.com/ente-io/ente/issues/4296
await _lock.synchronized(() async {
final existingLocalFileIDs = await _db.getExistingLocalFileIDs(ownerID);
_logger.info("${existingLocalFileIDs.length} localIDs were discovered");

final syncStartTime = DateTime.now().microsecondsSinceEpoch;
final lastDBUpdationTime = _prefs.getInt(kDbUpdationTimeKey) ?? 0;
final startTime = DateTime.now().microsecondsSinceEpoch;
if (lastDBUpdationTime != 0) {
await _loadAndStoreDiff(
existingLocalFileIDs,
fromTime: lastDBUpdationTime,
toTime: syncStartTime,
);
} else {
// Load from 0 - 01.01.2010
Bus.instance.fire(SyncStatusUpdate(SyncStatus.startedFirstGalleryImport));
var startTime = 0;
var toYear = 2010;
var toTime = DateTime(toYear).microsecondsSinceEpoch;
while (toTime < syncStartTime) {
final syncStartTime = DateTime.now().microsecondsSinceEpoch;
final lastDBUpdationTime = _prefs.getInt(kDbUpdationTimeKey) ?? 0;
final startTime = DateTime.now().microsecondsSinceEpoch;
if (lastDBUpdationTime != 0) {
await _loadAndStoreDiff(
existingLocalFileIDs,
fromTime: lastDBUpdationTime,
toTime: syncStartTime,
);
} else {
// Load from 0 - 01.01.2010
Bus.instance.fire(SyncStatusUpdate(SyncStatus.startedFirstGalleryImport));
var startTime = 0;
var toYear = 2010;
var toTime = DateTime(toYear).microsecondsSinceEpoch;
while (toTime < syncStartTime) {
await _loadAndStoreDiff(
existingLocalFileIDs,
fromTime: startTime,
toTime: toTime,
);
startTime = toTime;
toYear++;
toTime = DateTime(toYear).microsecondsSinceEpoch;
}
await _loadAndStoreDiff(
existingLocalFileIDs,
fromTime: startTime,
toTime: toTime,
toTime: syncStartTime,
);
startTime = toTime;
toYear++;
toTime = DateTime(toYear).microsecondsSinceEpoch;
}
await _loadAndStoreDiff(
existingLocalFileIDs,
fromTime: startTime,
toTime: syncStartTime,
);
}
if (!hasCompletedFirstImport()) {
await _prefs.setBool(kHasCompletedFirstImportKey, true);
await _refreshDeviceFolderCountAndCover(isFirstSync: true);
_logger.fine("first gallery import finished");
Bus.instance
.fire(SyncStatusUpdate(SyncStatus.completedFirstGalleryImport));
}
final endTime = DateTime.now().microsecondsSinceEpoch;
final duration = Duration(microseconds: endTime - startTime);
_logger.info("Load took " + duration.inMilliseconds.toString() + "ms");
if (!hasCompletedFirstImport()) {
await _prefs.setBool(kHasCompletedFirstImportKey, true);
await _refreshDeviceFolderCountAndCover(isFirstSync: true);
_logger.fine("first gallery import finished");
Bus.instance
.fire(SyncStatusUpdate(SyncStatus.completedFirstGalleryImport));
}
final endTime = DateTime.now().microsecondsSinceEpoch;
final duration = Duration(microseconds: endTime - startTime);
_logger.info("Load took " + duration.inMilliseconds.toString() + "ms");
});

_existingSync?.complete();
_existingSync = null;
}
Expand Down Expand Up @@ -240,6 +249,10 @@ class LocalSyncService {
}
}

Lock getLock() {
return _lock;
}

bool hasGrantedPermissions() {
return _prefs.getBool(kHasGrantedPermissionsKey) ?? false;
}
Expand Down
2 changes: 2 additions & 0 deletions mobile/lib/ui/tools/editor/video_editor_page.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -299,6 +299,8 @@ class _VideoEditorPageState extends State<VideoEditorPage> {
);
} catch (_) {
await dialog.hide();
} finally {
await PhotoManager.startChangeNotify();
}
}
}
12 changes: 10 additions & 2 deletions mobile/lib/ui/viewer/actions/file_selection_actions_widget.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -822,17 +822,25 @@ class _FileSelectionActionsWidgetState
}

Future<void> _download(List<EnteFile> files) async {
final totalFiles = files.length;
int downloadedFiles = 0;

final dialog = createProgressDialog(
context,
S.of(context).downloading,
S.of(context).downloading + " ($downloadedFiles/$totalFiles)",
isDismissible: true,
);
await dialog.show();
try {
final futures = <Future>[];
for (final file in files) {
if (file.localID == null) {
futures.add(downloadToGallery(file));
futures.add(
downloadToGallery(file).then((_) {
downloadedFiles++;
dialog.update(message: S.of(context).downloading + " ($downloadedFiles/$totalFiles)");
}),
);
}
}
await Future.wait(futures);
Expand Down
77 changes: 41 additions & 36 deletions mobile/lib/utils/file_download_util.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -189,45 +189,50 @@ Future<void> downloadToGallery(EnteFile file) async {
final bool downloadLivePhotoOnDroid =
type == FileType.livePhoto && Platform.isAndroid;
AssetEntity? savedAsset;
final File? fileToSave = await getFile(file);
//Disabling notifications for assets changing to insert the file into
//files db before triggering a sync.
await PhotoManager.stopChangeNotify();
if (type == FileType.image) {
savedAsset = await PhotoManager.editor
.saveImageWithPath(fileToSave!.path, title: file.title!);
} else if (type == FileType.video) {
savedAsset =
await PhotoManager.editor.saveVideo(fileToSave!, title: file.title!);
} else if (type == FileType.livePhoto) {
final File? liveVideoFile =
await getFileFromServer(file, liveVideo: true);
if (liveVideoFile == null) {
throw AssertionError("Live video can not be null");
// We use a lock to prevent synchronisation to occur while it is downloading
// as this introduces wrong entry in FilesDB due to race condition
// This is a fix for https://github.com/ente-io/ente/issues/4296
await LocalSyncService.instance.getLock().synchronized(() async {
final File? fileToSave = await getFile(file);
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We can move this outside. This will fetch the file from remote, and decrypt it.

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@simondubrulle simondubrulle Dec 11, 2024 •
edited
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I tried moving it outside, and it is technically working (it is not triggering this specific issue), but it starts all selected downloads at same time with following effects:

  • app gets very laggy
  • likely to have network issues (I have had time outs and network errors because of too many parallel/open requests). Issues which I did not get with the sequential approach.
  • it should be faster but in my opinion less robust when dowloading lots of files/complete collection.

At the moment I kept it inside as it is solving the issue while not introducing other ones but I leave it up to you to decide based on this feedback.

A further improvement might be to move it outside and limit the number of concurrent downloads, but maybe not part of this fix/PR?

//Disabling notifications for assets changing to insert the file into
//files db before triggering a sync.
await PhotoManager.stopChangeNotify();
if (type == FileType.image) {
savedAsset = await PhotoManager.editor
.saveImageWithPath(fileToSave!.path, title: file.title!);
} else if (type == FileType.video) {
savedAsset =
await PhotoManager.editor.saveVideo(fileToSave!, title: file.title!);
} else if (type == FileType.livePhoto) {
final File? liveVideoFile =
await getFileFromServer(file, liveVideo: true);
if (liveVideoFile == null) {
throw AssertionError("Live video can not be null");
}
if (downloadLivePhotoOnDroid) {
await _saveLivePhotoOnDroid(fileToSave!, liveVideoFile, file);
} else {
savedAsset = await PhotoManager.editor.darwin.saveLivePhoto(
imageFile: fileToSave!,
videoFile: liveVideoFile,
title: file.title!,
);
}
}
if (downloadLivePhotoOnDroid) {
await _saveLivePhotoOnDroid(fileToSave!, liveVideoFile, file);
} else {
savedAsset = await PhotoManager.editor.darwin.saveLivePhoto(
imageFile: fileToSave!,
videoFile: liveVideoFile,
title: file.title!,

if (savedAsset != null) {
file.localID = savedAsset!.id;
await FilesDB.instance.insert(file);
Bus.instance.fire(
LocalPhotosUpdatedEvent(
[file],
source: "download",
),
);
} else if (!downloadLivePhotoOnDroid && savedAsset == null) {
_logger.severe('Failed to save assert of type $type');
}
}

if (savedAsset != null) {
file.localID = savedAsset.id;
await FilesDB.instance.insert(file);
Bus.instance.fire(
LocalPhotosUpdatedEvent(
[file],
source: "download",
),
);
} else if (!downloadLivePhotoOnDroid && savedAsset == null) {
_logger.severe('Failed to save assert of type $type');
}
});
} catch (e) {
_logger.severe("Failed to save file", e);
rethrow;
Expand Down
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