Populate origin field of MessageHeaders

[epwalsh]

This comes from https://docs.celeryproject.org/en/latest/internals/reference/celery.utils.nodenames.html#celery-utils-nodenames

[JavedNissar]

Are there test cases for this issue? @epwalsh

[epwalsh]

@restitutororbis not at the moment, but in the Python implementation it looks like this comes directly from here: https://docs.celeryproject.org/en/latest/internals/reference/celery.utils.nodenames.html#celery.utils.nodenames.anon_nodename

[JavedNissar]

@epwalsh Cool, thanks!

[JavedNissar]

@epwalsh Which files should I take a look at on the Rust side of things?

[epwalsh]

I think it would make sense to handle this within the MessageBuilder struct in the protocol module. I don't think we really need to expose a method to set this, but we should just populate this field within MessageBuilder::new according to how it's done in Python. Let me know if you have any other questions!

[JavedNissar]

@epwalsh Would it be alright to add this to make it easier to get the hostname?
https://docs.rs/hostname/0.3.0/hostname/

[epwalsh]

@restitutororbis sure!