Hi,
I am currently looking at ways of extending the generated code, in order to
add some helpers for some messages which map to standard types in our
codebase (think UUID, IPv6 — akin to the extended features awarded to the
well-known types).
My goal is to be able to go from:
message User {
example.wellknown.UUID id = 1;
}
To (for Python):
user.id.to_uuid()
UUID("4fc93ada-dded-4737-9a5c-e3811c37f99d")
user.id.from_uuid(UUID("002ce13b-31bc-4332-80f9-51f83a49eb65"))
I thought it would be possible to provide, for my own types, the same kind
of extended features as the "well-known types" enjoy.
However, I couldn't find how to do that in the documentation; and a look
at the Python implementation showed that these extensions are hardcoded in
the codebase (see
https://github.com/protocolbuffers/protobuf/blob/master/python/google/protobuf/internal/python_message.py#L151-L152).
Have I missed some part of the documentation? What is the common pattern
for such extensions?
Thanks,
--
Raphaël Barrois
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