Hi, I'm working again on Android's callback hell b...

# coroutines

[louiscad]

Hi, I'm working again on Android's callback hell based Camera2 API, resuming work on an open source library to implement structured concurrency in the bast possible way.

My questions are the following:
1. How to cancel a scope (based on an error callback) with a specific exception?
In my case, in a local coroutineScope { ... }, I have an async block that needs to be cancelled if some error callback comes in, and that exception coming in is the cause of the cancellation, so CoroutineScope.cancel() doesn't suit my needs.
2. Is using CompleteableDeferred<T>(coroutineContext[Job]) safe? My guess is that it will cancel the scope with the proper exception if its completeExceptionnaly(…) function is called, and it will itself be cancelled if the scope is cancelled from another place. Am I right about this? If so, I'm wondering why there's no completableDeferred<T>() extension function for CoroutineScope that would do it without needing to pass coroutineContext[Job].

[darkmoon_uk]

Hi @louiscad, I don't have an answer for you, but having worked with that API before, I just wanted to salute your effort to tame it 🙂