Hi guys, I have some libraries that use ThreadLoca...

# coroutines

[Andrea Giuliano]

Hi guys, I have some libraries that use ThreadLocal in my application and I’m using the .asContextElement() extension function to make them coroutine-ready. All works well but i find my code having something like this

launch(object1.asContextElement() + object2.asContextElement()) {}

I was thinking to encapsulate those element into a container such that I can do something like this

launch(myContext) {}

where mycontext contains the elements from object1 and object2.

I was thinking to do this by implementing the CoroutineContext interface but I then I need to implement all its functions, while what I really want is just the default + behavior. Is there any nice way to achieve this?

[elizarov]

val myContext = object1.asContextElement() + object2.asContextElement()

[Andrea Giuliano]

yes, thanks Roman, but I wanted to use dependency injection and box the 2 elements into a single “context”

[elizarov]

Cannot you inject a value? What DI framework do you use?

[Andrea Giuliano]

Spring

[elizarov]

Anyway, if you cannot, you can do

object MyContext: CoroutineContext by (object1.asContextElement() + object2.asContextElement())

[Andrea Giuliano]

can’t inject the value directly since the singleton I’m in it’s going to have different values for different requests

[Andrea Giuliano]

object MyContext: CoroutineContext by (object1.asContextElement() + object2.asContextElement())

this is amazing, will try this one. let me see if I can make it working with DI

[Andrea Giuliano]

thanks a lot! I knew there was a more elegant way!