Processors: ability to know the run hosts about nornir HOT 2 OPEN

The progress bar from nornir_rich has the option to pass the number of hosts implemented. Maybe the code helps you.

https://github.com/InfrastructureAsCode-ch/nornir_rich/blob/b1661687005a15059acbbc6d0665a25550f17a45/nornir_rich/progress_bar.py#L22

from nornir.

The problem is that data resides in completely different parts of the stack. An easier solution would be to pass that information explicitly to your processor.

class ProgressProcessor(Processor):
    def __init__(self, on_good, on_failed, raise_on_error):
       ...

Alternatively we could move this:

https://github.com/nornir-automation/nornir/blob/v3.4.1/nornir/core/__init__.py#L116

to here:

https://github.com/nornir-automation/nornir/blob/v3.4.1/nornir/core/__init__.py#L138

and pass run_on to task_started but that would be a breaking change so we need to think carefully about it.

from nornir.