pvua: Another wrapper of pyepics and p4p

["Lewis, Laura via Tech-talk" <tech-talk at aps.anl.gov>]

Dear all,

At SLAC we created a small Python library called pvua (PV Unified Access), which wraps pyepics and p4p. It is intended to support transitioning older programs to use pvAccess by providing a close approximation of the pyepics library's functions and classes. It is similar to the solutions listed in prior threads, but the API is designed around supporting applications that expect to be using pyepics (hence, CA), so it is particularly well suited for updating legacy software to use pvAccess without necessitating a larger rework. The library seems to be working fairly well for our use cases, albeit with extremely minor overhead paid by not interfacing with CA/PVA directly.

This software was written for Python environments, which is why we did not use C++ or look for existing C++ solutions.

Hosted at https://github.com/slac-epics/pvua.

Regards,

Laura