Support for non-flex (IDL) types seems missing

[AlbertMietus]

The readme says there is support for all kind of dds-types. And the project goal is to have a python-binding of (cyclone) dds. However, all docs, test, an the current code (as far as I understand) only use flexytypes; or key-value.
Everywhere I look, python-types are serialised to json... so basically it is sending strings to other participants. When that is python code, it will work. However, dds is supposed to be language agnostic, isn’t? A python-program on a raspberry-Pi should be able to “talk” with an embedded-C system and java server. Or is my understanding of dds wrong?

So, please clarify. Either by updating the docs on how how to use those types. Or by adding the missing code/examples. Or, making clear it’s not-yet a prober Python-binding

Thanks

[kydos]

Hello Albert,

The previous version of python-cdds supported both IDL generated types as well as "flexy-types". The last rewrite, we did not include the IDL based types as there were a few things we wanted to do differently. Thus the option you have is to use the IDL defined at https://github.com/atolab/python-cdds/blob/master/bit/bit.idl and use this type on your RaspberryPI application. You could even reuse the https://github.com/atolab/python-cdds/blob/master/bit/dds_stubs.h to read/write data.

We'll add-back support for arbitrary generated types later this month or sometimes on the first half of Sept.

[AlbertMietus]

Hi Kydos,

It's now a year later ... Any news?

[Pro]

@kydos @gabrik any update on this?

I'm also interested in having a Python Subscriber for a IDL-based topic published by the Cyclone DDS C side.
Should this work if we manually write a type support description for our IDL and then use it in python?

[kydos]

Dear @AlbertMietus and @Pro, the good news is that we do have a new Python binding fro Cyclone that supports arbitrary IDL types. Additionally as part of this new API there is also a standalone library for creating CDR codecs for IDL types while describing the types in python. Please take a look at: https://github.com/atolab/pycdr/tree/master/examples

The new API which leverages PYCDR and improves usability and functionality will be merged soon. But meanwhile you can use pycdr with the current API.

HTH.

[Pro]

@kydos Nice! Unfortunately thy pycdr repo seems to be private. Would it be possible that you add me so that I can check it out?

Maybe it's also worth mentioning this in the main README of this repo.