38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
import logging
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from tfw.internals.crypto import KeyManager, verify_message
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LOG = logging.getLogger(__name__)
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class FSMAware:
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keys = ['fsm_update']
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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_event_log = []
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self._auth_key = KeyManager().auth_key
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def process_message(self, message):
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if message['key'] == 'fsm_update':
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if verify_message(self._auth_key, message):
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self._handle_fsm_update(message)
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def _handle_fsm_update(self, message):
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try:
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new_state = message['current_state']
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if self.fsm_state != new_state:
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self.handle_fsm_step(message)
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self.fsm_state = new_state
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self.fsm_in_accepted_state = message['in_accepted_state']
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self.fsm_event_log.append(message)
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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, message):
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pass
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