maybe like this?

suspend fun someAction() = coroutineScope {
   ...
}

I wrote a blog post about CoroutineScope and how to handle lifecycles with them. Towards the end I write about how to handle communication of objects that have different lifecycles. https://medium.com/swlh/how-can-we-use-coroutinescopes-in-kotlin-2210695f0e89?source=your_stories_page---------------------------

I see so

repoScope.async {}.await()

inside a suspend function I've never seen this, is this idiomatic? (that its inside a suspend fun is what gets me)

Yup. As soon as the requestor/client goes away, the entire request is cancelled, since no one would be interested in it anymore. But in a few cases, even if the requestor/client goes away, the object handling the request may still be interested in it (e.g still caching a network-response even after the screen is closed by the user). There may be other use-cases.

yeam im just wondering why this api is not cleaner

I don’t know if it is idiomatic or not. But in

repoScope.async { doSomething() }.await()

, the

doSomething

will not be cancelled even if the caller of

repoScope.async

has ended (the

await()

call, which will run in _caller_’s scope, will be cancelled asap). You can hide the

reposScope

inside the Repo-class and make it somewhat invisible to the caller/client

well not common for backends, for clients this is super common

Often, Repos (often ‘singletons’) don’t really have their ‘own’ lifecycle, and you could just use

GlobalScope

. Their lifecycle only ends when the app/process ends, not before that. But if you have a, for example a User-Cache (that would behave like the cache with its own lifecyle that I described earlier), this user-cache’s lifecycle could end when the user logs out, zapping the cache and cancelling any related network-requests that are still queued/outstanding.

but I worry that if you remove the suspend modifier, then you lose a lot of power, like being able to handle some obscure android lifecycle where you need to block etc. (or a fcm push for example)