Specifying callbacks for behaviours extending gen_server
Tue Feb 23 16:14:45 CET 2021
I am designing a behaviour that extends gen_server and thus I want all of gen_server's callback specification in addition to some additional ones on top as part of the extension. In the past I have favored using the `-callback` attribute as recommended in the documentation but then I saw someone recommend the following when extending gen_server
> behaviour_info(Type) -> gen_server:behaviour_info(Type).
I tried combining the two approaches but such is not allowed (which makes sense). I believe my options are to append my callbacks to gen_server's list using `behaviour_info` or to copy gen_server's callback specifications from the OTP source. Copy-pasting code just feels wrong... how bad is it to use `behaviour_info` over `-callback`? And am I taking the right approach?
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