Use exceptions as return values?

[thusser]

We're currently using exceptions of some kind of return value, indicating what went wrong.

At the moment, all excpetions in RPC methods of a module are thrown in the module, while also send to the caller. The module itself logs all exceptions, which should not be necessary.

[thusser]

Maybe a module can define a list of exceptions that are NOT logged locally?

[thusser]

Example:

The AutoFocusSeries module currently raises almost random exceptions. We could introduce a new FocusError and derive something like FocusOutOfBoundsError.

Then the module can declare in its constructor that these exceptions may be raised, but will not be logged in that module as exception, only as warning. Maybe like this:

self._disable_exception_logging(FocusError)
self._disable_exception_logging(FocusOutOfBoundsError)

Or maybe even use the inheritance tree to also disable all derived exceptions.