def my_custom_action():
from actions.procs.myactions import MyCustomAction
executor = ActionExecutor()
executor.register_action(MyCustomAction())
domain = default_domain()
req = {
'domain': domain.as_dict(),
'next_action': 'my_custom_action',
'sender_id': 'default',
'tracker': {
'latest_message': {
'entities': [],
'intent': {},
'text': None
},
'active_form': {},
'latest_action_name': None,
'sender_id': 'default',
'paused': False,
'followup_action': 'action_listen',
'latest_event_time': None,
'slots': {
'name': None
},
'events': [],
'latest_input_channel': None
}
}
result = executor.run(req)
dump(result)
class Endpoints:
def __init__(self):
self.config = Config()
self.endpoints = AvailableEndpoints.read_endpoints(
self.config.RASA_CONFIG_ENDPOINTS_FILE)
self.interpreter = NaturalLanguageInterpreter.create(
self.config.RASA_CONFIG_NLU_TRAIN_PACKAGE_NAME, self.endpoints.nlu)
self.agent = load_agent(
self.config.RASA_CONFIG_CORE_DIALOGUE_PACKAGE_NAME,
interpreter=None,
endpoints=self.endpoints)
self.executor = ActionExecutor()
self.executor.register_package(
self.config.RASA_CONFIG_ENDPOINTS_ACTION_PACKAGE_NAME)
self.message_processor = MessageProcessor(
# self.interpreter,
None,
self.agent.policy_ensemble,
self.agent.domain,
self.agent.tracker_store,
self.agent.nlg,
action_endpoint=self.agent.action_endpoint,
message_preprocessor=self.agent.preprocessor)
def execute_actions(self, action_call):
try:
response = self.executor.run(action_call)
except ActionExecutionRejection as e:
result = {"error": str(e), "action_name": e.action_name}
response = jsonify(result)
response.status_code = 400
return response
return jsonify(response)
def event_verbosity_parameter(self, default_verbosity):
event_verbosity_str = request.args.get(
'include_events', default=default_verbosity.name).upper()
try:
return EventVerbosity[event_verbosity_str]
except KeyError:
enum_values = ", ".join([e.name for e in EventVerbosity])
abort(
error(
404, "InvalidParameter",
"Invalid parameter value for 'include_events'. "
"Should be one of {}".format(enum_values), {
"parameter": "include_events",
"in": "query"
}))
def ask_for_action(self, action_name, action_endpoint):
if action_name not in self.agent.domain.action_names:
logger.warning("action not found")
return None
defaults = {a.name(): a for a in action.default_actions()}
if action_name in defaults and action_name not in self.agent.domain.user_actions:
return defaults.get(action_name)
elif action_name.startswith("utter_"):
return UtterAction(action_name)
else:
return RemoteAction(action_name, action_endpoint)
def handle_actions(self, message, action_name):
verbosity = self.event_verbosity_parameter(
EventVerbosity.AFTER_RESTART)
try:
output_channel = CollectingOutputChannel()
dispatcher = Dispatcher(message.sender_id, output_channel,
self.agent.nlg)
tracker = self.message_processor._get_tracker(message.sender_id)
if tracker:
#拿到action实例
action = self.ask_for_action(
action_name, self.message_processor.action_endpoint,
self.ask_for_action)
# action = self._get_action(action_name)
self.message_processor._run_action(action, tracker, dispatcher)
# save tracker state to continue conversation from this state
self.message_processor._save_tracker(tracker)
# retrieve tracker and set to requested state
tracker = self.agent.tracker_store.get_or_create_tracker(
message.sender_id)
state = tracker.current_state(verbosity)
return jsonify({
"tracker": state,
"messages": output_channel.messages
})
except ValueError as e:
return error(400, "ValueError", e)
except Exception as e:
return error(500, "ValueError",
"Server failure. Error: {}".format(e))
class RasaCore:
def __init__(self):
self.config = Config()
self.endpoints = AvailableEndpoints.read_endpoints(
self.config.RASA_CONFIG_ENDPOINTS_FILE)
# self.interpreter = NaturalLanguageInterpreter.create(self.config.RASA_CONFIG_NLU_TRAIN_PACKAGE_NAME, self.endpoints.nlu)
self.agent = load_agent(
self.config.RASA_CONFIG_CORE_DIALOGUE_PACKAGE_NAME,
interpreter=None,
endpoints=self.endpoints)
self.executor = ActionExecutor()
self.executor.register_package(
self.config.RASA_CONFIG_ENDPOINTS_ACTION_PACKAGE_NAME)
self.message_processor = MessageProcessor(
# self.interpreter,
None,
self.agent.policy_ensemble,
self.agent.domain,
self.agent.tracker_store,
self.agent.nlg,
action_endpoint=self.agent.action_endpoint,
message_preprocessor=None)
def handle_message(self, message):
#message: UserMessage(text_message.get("text"),
# output_channel,
# sender_id)
# out = CollectingOutputChannel()
return self.message_processor.handle_message(message)
# self.parse_data = {
# "intent": self.intent,
# "entities": self.entities,
# "text": text,
# }
def resolve_nlu_message(self, message):
if message.parse_data:
parse_data = message.parse_data
else:
parse_data = self.agent._parse_message(message)
return parse_data
def receive_nlu_message(self, message, parse_data):
tracker = self.message_processor._get_tracker(message.sender_id)
if tracker:
tracker.update(
UserUttered(message.text,
parse_data["intent"],
parse_data["entities"],
parse_data,
input_channel=message.input_channel))
# store all entities as slots
for e in self.agent.domain.slots_for_entities(
parse_data["entities"]):
tracker.update(e)
self.predict_and_execute_next_action(message, tracker)
self.message_processor._save_tracker(tracker)
if isinstance(message.output_channel, CollectingOutputChannel):
return message.output_channel.messages
else:
return None
return None
def predict_and_execute_next_action(self, message, tracker):
dispatcher = Dispatcher(message.sender_id, message.output_channel,
self.message_processor.nlg)
# keep taking actions decided by the policy until it chooses to 'listen'
should_predict_another_action = True
num_predicted_actions = 0
self.log_slots(tracker)
# action loop. predicts actions until we hit action listen
while (should_predict_another_action
and self.should_handle_message(tracker)
and num_predicted_actions <
self.message_processor.max_number_of_predictions):
# this actually just calls the policy's method by the same name
probabilities, policy = self.message_processor._get_next_action_probabilities(
tracker)
max_index = int(np.argmax(probabilities))
if self.message_processor.domain.num_actions <= max_index or max_index < 0:
raise Exception("Can not access action at index {}. "
"Domain has {} actions.".format(
max_index,
self.message_processor.domain.num_actions))
action = self.ask_for_action(
self.message_processor.domain.action_names[max_index],
self.message_processor.action_endpoint)
confidence = probabilities[max_index]
# action, policy, confidence = self.agent.predict_next_action(tracker)
should_predict_another_action = self.run_action(
action, tracker, dispatcher, policy, confidence)
num_predicted_actions += 1
if (num_predicted_actions
== self.message_processor.max_number_of_predictions
and should_predict_another_action):
# circuit breaker was tripped
if self.message_processor.on_circuit_break:
# call a registered callback
self.message_processor.on_circuit_break(tracker, dispatcher)
def ask_for_action(self, action_name, action_endpoint):
if action_name not in self.agent.domain.action_names:
logger.warning("action not found")
return None
defaults = {a.name(): a for a in action.default_actions()}
if action_name in defaults and action_name not in self.agent.domain.user_actions:
return defaults.get(action_name)
elif action_name.startswith("utter_"):
return UtterAction(action_name)
else:
return RemoteAction(action_name, action_endpoint, self.executor)
def should_handle_message(self, tracker):
return (not tracker.is_paused()
or tracker.latest_message.intent.get("name")
== self.agent.domain.restart_intent)
def log_slots(self, tracker):
# Log currently set slots
slot_values = "\n".join([
"\t{}: {}".format(s.name, s.value) for s in tracker.slots.values()
])
logger.debug("Current slot values: \n{}".format(slot_values))
def run_action(self,
action,
tracker,
dispatcher,
policy=None,
confidence=None):
# events and return values are used to update
# the tracker state after an action has been taken
try:
events = action.run(dispatcher, tracker,
self.message_processor.domain)
except Exception as e:
logger.error(
"Encountered an exception while running action '{}'. "
"Bot will continue, but the actions events are lost. "
"Make sure to fix the exception in your custom "
"code.".format(action.name()), )
logger.error(e, exc_info=True)
events = []
self.log_action_on_tracker(tracker, action.name(), events, policy,
confidence)
self.message_processor.log_bot_utterances_on_tracker(
tracker, dispatcher)
self.schedule_reminders(events, dispatcher)
return self.message_processor.should_predict_another_action(
action.name(), events)
def schedule_reminders(self, events, dispatcher):
# type: (List[Event], Dispatcher) -> None
"""Uses the scheduler to time a job to trigger the passed reminder.
Reminders with the same `id` property will overwrite one another
(i.e. only one of them will eventually run)."""
if events is not None:
for e in events:
if isinstance(e, ReminderScheduled):
scheduler.add_job(self.message_processor.handle_reminder,
"date",
run_date=e.trigger_date_time,
args=[e, dispatcher],
id=e.name,
replace_existing=True)
def log_action_on_tracker(self, tracker, action_name, events, policy,
policy_confidence):
# Ensures that the code still works even if a lazy programmer missed
# to type `return []` at the end of an action or the run method
# returns `None` for some other reason.
if events is None:
events = []
logger.debug("Action '{}' ended with events '{}'".format(
action_name, ['{}'.format(e) for e in events]))
self.warn_about_new_slots(tracker, action_name, events)
if action_name is not None:
# log the action and its produced events
tracker.update(
ActionExecuted(action_name, policy, policy_confidence))
for e in events:
e.timestamp = time.time()
tracker.update(e)
def warn_about_new_slots(self, tracker, action_name, events):
# these are the events from that action we have seen during training
if action_name not in self.message_processor.policy_ensemble.action_fingerprints:
return
fp = self.message_processor.policy_ensemble.action_fingerprints[
action_name]
slots_seen_during_train = fp.get("slots", set())
for e in events:
if isinstance(e, SlotSet) and e.key not in slots_seen_during_train:
s = tracker.slots.get(e.key)
if s and s.has_features():
logger.warning("Action '{0}' set a slot type '{1}' that "
"it never set during the training. This "
"can throw of the prediction. Make sure to "
"include training examples in your stories "
"for the different types of slots this "
"action can return. Remember: you need to "
"set the slots manually in the stories by "
"adding '- slot{{\"{1}\": {2}}}' "
"after the action."
"".format(action_name, e.key,
json.dumps(e.value)))
def execute_actions(self, action_call):
try:
response = self.executor.run(action_call)
except ActionExecutionRejection as e:
result = {"error": str(e), "action_name": e.action_name}
response = jsonify(result)
response.status_code = 400
return response
return jsonify(response)