debugFlags doesn't seem to work

[chirastefan]

I want to see logs for every DB transaction. I added the debugFlags option with all the possible options, and I cannot see any logs in the console, nor the simulator from Console App from macOS.

Build info

• objectbox: ^4.3.0
• objectbox_flutter_libs: any
• Flutter/Dart version: Flutter (Channel stable, 3.32.8, on macOS 15.6 24G84 darwin-arm64, locale en-US)
• Deployment OS or device: iOS simulator 18.5 iPhone 16

Steps to reproduce

final itemIdToUpdate='someid';
final entityToUpdate=SomeEntity();
    return await storeRepo.store.runInTransactionAsync<Item, SetItemParams>(TxMode.write, (store, params) {
      final builder = store.box<ItemModel>().query()..link(ItemModel.user, UserModel_.id.equals(user.id));
      final query = builder.build();

      try {
        final items = query.find();
        final foundItem = items.where((p) => p.id == itemIdToUpdate).firstOrNull;

        final model = params.itemMapper.toModel(entity: entityToUpdate, user: user);
        final id = store.box<ItemModel>().put(model);
        final savedItem = store.box<ItemModel>().get(id)!;

        return params.itemMapper.toEntity(model: savedItem);
      } finally {
        query.close();
      }
    }, SetItemParams(itemMapper: mapper, userMapper: userRepo.mapper));

Expected behavior

The code above does not update the entry in the DB and does not throw any error.

Actual behavior

I want to check the logs. Admin logs are useless, and also, Admin does not work in parallel with the app; it constantly throws

[ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: StorageException: failed to create transaction: Could not begin read transaction (22) (OBX_ERROR code 10199)
#0      ObjectBoxNativeError.throwMapped (package:objectbox/src/native/bindings/helpers.dart:99:11)
#1      throwLatestNativeError (package:objectbox/src/native/bindings/helpers.dart:54:48)
#2      checkObxPtr (package:objectbox/src/native/bindings/helpers.dart:31:5)
#3      new Transaction (package:objectbox/src/native/transaction.dart:33:5)
#4      Store._runInTransaction (package:objectbox/src/native/store.dart:782:32)
#5      Store.runInTransaction (package:objectbox/src/native/store.dart:640:12)
#6      Store.runInTransactionAsync.<anonymous closure> (package:objectbox/src/native/store.dart:663:21)
#7      _RunAsyncIsolateConfig.runCallback (package:objectbox/src/native/store.dart:971:51)
#8      Store._callFunctionWithStoreInIsolate (package:objectbox/src/native/store.dart:675:44)
#9      _delayEntrypointInvocation.<<…>

Code

    final store = Store(
      getObjectBoxModel(),
      directory: path.join(docsDir.path, _dbFolder),
      maxDBSizeInKB: 4 * 1024 * 1024, // 4GB
      macosApplicationGroup: 'obx_db.demo',
      debugFlags: DebugFlags.logQueries, // tested all possible values
    );

Logs, stack traces

system.log from the simulator instance

Aug 20 00:50:39 192 syslogd[58289]: --- syslogd restarted ---
Aug 20 00:50:39 192 syslogd[58289]: Configuration Notice:
	ASL Module "com.apple.contacts.ContactsAutocomplete" claims selected messages.
	Those messages may not appear in standard system log files or in the ASL database.

[greenrobot-team]

Thanks for reporting! We will try to verify this.

Edit: quickly verified this works using an Android emulator and the relations example in this repo:

    final store = Store(
      getObjectBoxModel(),
      directory: p.join((await getApplicationDocumentsDirectory()).path,
          "obx-demo-relations"),
        macosApplicationGroup: "objectbox.demo",
      debugFlags: DebugFlags.logQueries | DebugFlags.logQueryParameters
    );

I/Box     ( 4414): Creating query #1 for Task with 1 condition(s)
I/Box     ( 4414): Finding using query #1 (sorted)

So maybe just iOS simulator is affected.

[chirastefan]

Yes, it works for the Android emulator, but for iOS it doesn't.

[chirastefan]

So this is a bug for iOS

[shubham0204]

Regarding,

I added the debugFlags option with all the possible options, and I cannot see any logs in the console, nor the simulator from Console App from macOS.

On running the ios project from Xcode, the logs are visible in the IDE console for an iPhone Simulator:

When executing the Flutter project from IntelliJ IDEA (assuming Android Studio to behave similarly as both use the same Flutter plugin) on the iPhone Simulator, the logs are not visible in the IDE console:

[chirastefan]

Yes, that's the only place where the logs appear. But I'm developing in the IDE, not XCode. I also checked the DevTools Logging tab, and I started the app from the terminal, but there is no logging.

[greenrobot-team]

@chirastefan Can you please clarify what tools you are using (Visual Studio Code, Android Studio)? I suspect that this is an issue with the tool or flutter run not forwarding system log output.

I assume you are running the app in debug mode with a debugger attached?

Can you try to use flutter run with the --verbose flag?

[chirastefan]

I'm using IntelliJ Ultimate, but I don't think that is the issue, because(as mentioned previously) I also tried starting the app from the terminal(with and without --verbose) and it doesn't log anything related to obx for ios simulator. For the Android emulator, it works, starting from Intellij.