debugPhysicalChunkSize method

Future<int> debugPhysicalChunkSize(int index)

Physical size of chunk index's OPFS file (0 when it does not exist).

Diagnostic hook for tests: it temporarily releases this instance's handle on the chunk because a sync access handle is exclusive.

Implementation

Future<int> debugPhysicalChunkSize(int index) async {    _checkOpen();
  return _serialize(() async {
    await _closeChunkHandle(index);
    final client = _pool.clientForChunk(index);
    try {
      final opened = await client.open(
        chunkPathFor(path, index),
        create: false,
      );
      try {
        return await client.size(opened.handle);
      } finally {
        await client.closeHandle(opened.handle);
      }
    } on WebFileSystemException catch (error) {
      if (error.isNotFound) return 0;
      rethrow;
    }
  });
}