Context on one-shot structs

[Jean de Klerk]

Hi all,

I'm looking into how contexts are used, and wondering: does anybody know of an idiomatic use of context on a struct for the sake of a one-shot?

(a one-shot being some struct that gets used once, like an RPC or http request)

For example, http.Request has a context on its struct. But, I think the context exists there for backwards compatibility reasons.

I'm looking for a struct that has context on it specifically because the context is scoped to the lifetime of the request.

Thanks!

Jean

[Jean de Klerk]

Er, lifetime of the struct *

[Ross Light]

The Go CDK stores a Context in a struct while performing I/O: https://pkg.go.dev/gocloud.dev/blob#Bucket.NewWriter

It could be argued that this is done for compatibility with the io.Reader and io.Writer interfaces. However, I think this pattern, used sparingly, is suitable for API interactions where multiple method calls are required for a single conceptual task.

-Ross