Hello! How to distinguish if cancellation come from parent or child?

Hello! What's your use case?

I'm sending message to channel and if channel. In case of catching exeption I want to understand if channel was canceled or current job.

Your first sentence isn't clear to me. Why do you want to "understand" if the channel was cancelled, or if the cancellation came from the job of a coroutine?

In case the channel was cancelled i need to create new and make some retry logic. In case of job canceled - just exit.

Looks like you want to use a

Flow

and an operator from the

xxxLatest

family.