public async Task <Unit> Handle(UpdateScenesRequest request, CancellationToken cancellationToken)
{
var(conferenceId, roomId) = request;
await using (await _sceneRepository.LockScene(conferenceId, roomId))
{
var scene = await _sceneRepository.GetScene(conferenceId, roomId);
scene ??= SynchronizedSceneProvider.GetDefaultActiveScene();
var state = await _sceneRepository.GetSceneState(conferenceId, roomId);
state ??= SynchronizedSceneProvider.GetEmptySceneState();
await ApplyScene(conferenceId, roomId, scene, state);
}
await _mediator.Send(
new UpdateSynchronizedObjectRequest(conferenceId, SynchronizedScene.SyncObjId(roomId)));
return(Unit.Value);
}
public async ValueTask Handle(string conferenceId, string roomId, Func <ActiveScene, ActiveScene> patchFunc)
{
await using (await _sceneRepository.LockScene(conferenceId, roomId))
{
var previousScene = await _sceneRepository.GetScene(conferenceId, roomId);
previousScene ??= SynchronizedSceneProvider.GetDefaultActiveScene();
await _sceneRepository.SetScene(conferenceId, roomId, patchFunc(previousScene));
}
// for optimistic concurrency
await _mediator.Send(new ClearCacheRequest());
if (!await IsRoomExisting(conferenceId, roomId))
{
await _sceneRepository.RemoveScene(conferenceId, roomId);
throw SceneError.RoomNotFound.ToException();
}
await _mediator.Send(new UpdateScenesRequest(conferenceId, roomId));
}