async def handle_reminder(
self,
reminder_event: ReminderScheduled,
sender_id: Text,
output_channel: OutputChannel,
nlg: NaturalLanguageGenerator,
) -> None:
"""Handle a reminder that is triggered asynchronously."""
tracker = self._get_tracker(sender_id)
if not tracker:
logger.warning(
f"Failed to retrieve or create tracker for sender '{sender_id}'."
)
return None
if (reminder_event.kill_on_user_message
and self._has_message_after_reminder(tracker, reminder_event)
or not self._is_reminder_still_valid(tracker, reminder_event)):
logger.debug("Canceled reminder because it is outdated. "
"(event: {} id: {})".format(
reminder_event.action_name, reminder_event.name))
else:
# necessary for proper featurization, otherwise the previous
# unrelated message would influence featurization
tracker.update(UserUttered.empty())
action = self._get_action(reminder_event.action_name)
should_continue = await self._run_action(action, tracker,
output_channel, nlg)
if should_continue:
user_msg = UserMessage(None, output_channel, sender_id)
await self._predict_and_execute_next_action(user_msg, tracker)
# save tracker state to continue conversation from this state
self._save_tracker(tracker)
def _get_slots_sub_state(
tracker: "DialogueStateTracker",
) -> Dict[Text, Union[Text, Tuple[float]]]:
"""Set all set slots with the featurization of the stored value
Args:
tracker: dialog state tracker containing the dialog so far
Returns:
a dictionary mapping slot names to their featurization
"""
# proceed with values only if the user of a bot have done something
# at the previous step i.e., when the state is not empty.
if tracker.latest_message == UserUttered.empty(
) or not tracker.latest_action:
return {}
slots = {}
for slot_name, slot in tracker.slots.items():
if slot is not None and slot.as_feature():
if slot.value == SHOULD_NOT_BE_SET:
slots[slot_name] = SHOULD_NOT_BE_SET
elif any(slot.as_feature()):
# only add slot if some of the features are not zero
slots[slot_name] = tuple(slot.as_feature())
return slots
def _reset(self) -> None:
"""Reset tracker to initial state - doesn't delete events though!."""
self._reset_slots()
self._paused = False
self.latest_action_name = None
self.latest_message = UserUttered.empty()
self.latest_bot_utterance = BotUttered.empty()
self.followup_action = ACTION_LISTEN_NAME
self.active_form = {}