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[mob][photos] Add schema migration easier on FaceMLDataDB

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This commit is contained in:
ashilkn 2024-05-27 12:56:20 +05:30
parent baa90c42ad
commit ee8976e92b
1 changed files with 29 additions and 15 deletions
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44
mobile/lib/face/db.dart
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@ -35,6 +35,15 @@ class FaceMLDataDB {
static final FaceMLDataDB instance = FaceMLDataDB._privateConstructor();
static final _migrationScripts = [
createFacesTable,
createFaceClustersTable,
createClusterPersonTable,
createClusterSummaryTable,
createNotPersonFeedbackTable,
fcClusterIDIndex,
];
// only have a single app-wide reference to the database
static Future<SqliteDatabase>? _sqliteAsyncDBFuture;
@ -50,25 +59,30 @@ class FaceMLDataDB {
_logger.info("Opening sqlite_async access: DB path " + databaseDirectory);
final asyncDBConnection =
SqliteDatabase(path: databaseDirectory, maxReaders: 2);
await _onCreate(asyncDBConnection);
await _migrate(asyncDBConnection);
return asyncDBConnection;
}
Future<void> _onCreate(SqliteDatabase asyncDBConnection) async {
try {
final startTime = DateTime.now();
await asyncDBConnection.execute(createFacesTable);
await asyncDBConnection.execute(createFaceClustersTable);
await asyncDBConnection.execute(createClusterPersonTable);
await asyncDBConnection.execute(createClusterSummaryTable);
await asyncDBConnection.execute(createNotPersonFeedbackTable);
await asyncDBConnection.execute(fcClusterIDIndex);
_logger.info(
'FaceMLDataDB tables created in ${DateTime.now().difference(startTime).inMilliseconds}ms',
Future<void> _migrate(
SqliteDatabase database,
) async {
final result = await database.execute('PRAGMA user_version');
final currentVersion = result[0]['user_version'] as int;
final toVersion = _migrationScripts.length;
if (currentVersion < toVersion) {
_logger.info("Migrating database from $currentVersion to $toVersion");
await database.writeTransaction((tx) async {
for (int i = currentVersion + 1; i <= toVersion; i++) {
await tx.execute(_migrationScripts[i - 1]);
}
await tx.execute('PRAGMA user_version = $toVersion');
});
} else if (currentVersion > toVersion) {
throw AssertionError(
"currentVersion($currentVersion) cannot be greater than toVersion($toVersion)",
);
} catch (e, s) {
_logger.severe("Error creating FaceMLDataDB tables", e, s);
rethrow;
}
}