mirror of
https://github.com/avatao-content/baseimage-tutorial-framework
synced 2024-11-06 03:11:20 +00:00
46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
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# Copyright (C) 2018 Avatao.com Innovative Learning Kft.
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# All Rights Reserved. See LICENSE file for details.
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from tfw.crypto import KeyManager, verify_message
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from tfw.config.logs import logging
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LOG = logging.getLogger(__name__)
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class FSMAware:
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"""
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Base class for stuff that has to be aware of the framework FSM.
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This is done by processing 'fsm_update' messages.
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"""
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def __init__(self):
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self.fsm_state = None
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self.fsm_in_accepted_state = False
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self.fsm_last_update = None
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self._auth_key = KeyManager().auth_key
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def update_fsm_data(self, message):
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if message['key'] == 'fsm_update' and verify_message(self._auth_key, message):
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self._handle_fsm_update(message)
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return True
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return False
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def _handle_fsm_update(self, message):
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try:
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new_state = message['data']['current_state']
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if self.fsm_state != new_state:
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self.handle_fsm_step(**(message['data']))
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self.fsm_state = new_state
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self.fsm_in_accepted_state = message['data']['in_accepted_state']
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self.fsm_last_update = message['data']
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except KeyError:
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LOG.error('Invalid fsm_update message received!')
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def handle_fsm_step(self, **kwargs):
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"""
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Called in case the TFW FSM has stepped.
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:param kwargs: fsm_update 'data' field
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"""
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pass
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