PAS State Machine check
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== Introduction
MOC/SOC asked to provide a state machine diagram of each SWA instruments, with IORs sequences (AIAFxxxx) as transitions.
They want to check if the weekly STP operation plannings are correct or not.
=== python library
Searching for a python library to handle with "State machine" we could find a package called *python-statemachine*
https://python-statemachine.readthedocs.io/en/latest/[]
This library is able to:
* provide a syntax to describe the behaviour of SWA instruments as a state machine, using states and transitions
* draw and display the corresponding diagram
* simulate the state machine when it receives actions (transitions)
* check and validate if the transition sequences are OK
[CAUTION]
====
I have currently some problem to generate .png, but I can generate .svg diagram
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== PAS state machine
Here is a first try to describe PAS state machine
* link:documents/state_machine/state_machine.py[]
=== Initial state
* image:documents/state_machine/PAS.ini.svg[]
=== After 2 steps
* image:documents/state_machine/PAS.after.svg[]
=== After last step
The software generates an exception:
statemachine.exceptions.TransitionNotAllowed: Can't AIAF006 when in Configured.
