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assistant.py
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assistant.py
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import json
import sys
from ibm_watson import AssistantV2
from ibm_cloud_sdk_core.authenticators import IAMAuthenticator
sys.path.append('..') # persistent import directory for K9 secrets
from k9secrets import IAMAuthenticatorKey, assistant_service_URL, assistant_id
class State(object):
'''
State parent class to support standard Python functions
'''
def __init__(self):
print('Entering state:', str(self))
def on_event(self, event):
'''
Incoming events processing is delegated to the child State
to define and enable the valid state transitions.
'''
pass
def run(self):
'''
Enable the state to do something - this is usually delegated
to the child States)
'''
print('Run event for ' + str(self) + ' state not implemented')
def __repr__(self):
'''
Leverages the __str__ method to describe the State.
'''
return self.__str__()
def __str__(self):
'''
Returns the name of the State.
'''
return self.__class__.__name__
# Start K9 assistant states
class Observe(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
def run(self):
# Can transition to Hotword via listen
# Listens for MQTT events to change status
# Waits for command to go into announcement mode 'make_announcement'
# Waits for command to go into listen mode 'listen_for_hotword'
# k9.on_event('listen for hotword')
pass
def on_event(self, event):
if event == 'listen_for_hotword':
return Hotword()
if event == 'make_announcement':
return Announce()
return self
class Announce(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
def run(self):
# Pulls announcements from a queue
# Announces them and then returns
k9.on_event('done')
pass
def on_event(self, event):
if event == 'done':
return Observe()
return self
class Hotword(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
# open microphone etc
def run(self):
# Can transition to Hotword via listen
# k9.on_event('heard_name')
pass
def on_event(self, event):
if event == 'heard_name':
# close microphone etc
return Get_Command()
return self
class Get_Command(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
# open the STT capability
def run(self):
# Do speech to text #
# k9.on_event('listen for hotword')
pass
def on_event(self, event):
if event == 'command_received':
closeSTT()
return Understand()
if event == 'timeout':
closeSTT()
return Observe()
if event === 'listen_off':
closeSTT()
return Observe()
return self
def closeSTT(self):
# close STT
class Understand(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
# creates session
def run(self):
# Talks to conversation
# Work out what the action/response should be
# k9.on_event('response_received')
pass
def on_event(self, event):
if event == 'response_received':
return Respond()
return self
class Respond(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
def run(self):
# Make things happen and use TTS
# k9.on_event('listen for hotword')
pass
def on_event(self, event):
if event == 'chess':
return Chess()
if event == 'move':
return Move()
if event == 'response_complete':
return Get_Command()
return self
class Move(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
def run(self):
# Can transition to Hotword via listen
# Listens for MQTT heartbeats
pass
def on_event(self, event):
if event == 'stop_moving':
return Observe()
if event == 'timeout':
return Observe()
return self
class Chess(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
# set up board
# create sub-state
def run(self):
# starts game
# end game
pass
def on_event(self, event):
if event == 'game_done':
return Get_Command()
return self
# End K9 assistant states
class K9_Assistant(object):
'''
An assistant finite state machine that starts in waiting state and
will transition to a new state on when a transition event occurs.
It also supports a run command to enable each state to have its
own specific behaviours
'''
def __init__(self):
''' Initialise the K9 assistant in its Waiting state. '''
# Start with a default state.
self.state = Waiting()
def run(self):
''' State behavior is delegated to the current state'''
self.state.run()
def on_event(self, event):
'''
Incoming events are delegated to the current state, which then
returns the next valid state.
'''
# The next state will be the result of the on_event function.
self.state = self.state.on_event(event)
# States for the sub-state Chess Game
class Setup_Board(State):
'''
Set up the board
'''
def __init__(self):
print('Entering state:', str(self))
# set up board
# create sub-state
def run(self):
# Can transition to Hotword via listen
# Listens for MQTT events to change status
# Waits for command to go into announcement mode 'make_announcement'
# Waits for command to go into listen mode 'listen_for_hotword'
# k9.on_event('listen for hotword')
pass
def on_event(self, event):
if event == 'game_done':
return Get_Command()
return self
class White_Move(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
# set up board
# create sub-state
def run(self):
# Can transition to Hotword via listen
# Listens for MQTT events to change status
# Waits for command to go into announcement mode 'make_announcement'
# Waits for command to go into listen mode 'listen_for_hotword'
# k9.on_event('listen for hotword')
pass
def on_event(self, event):
if event == 'game_done':
return Get_Command()
return self
class Black_Move(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
# set up board
# create sub-state
def run(self):
# Can transition to Hotword via listen
# Listens for MQTT events to change status
# Waits for command to go into announcement mode 'make_announcement'
# Waits for command to go into listen mode 'listen_for_hotword'
# k9.on_event('listen for hotword')
pass
def on_event(self, event):
if event == 'game_done':
return Get_Command()
return self
class Endgame(State):
'''
The child state where the Dalek is scanning for faces, but appears dormant
'''
def __init__(self):
print('Entering state:', str(self))
# set up board
# create sub-state
def run(self):
# Can transition to Hotword via listen
# Listens for MQTT events to change status
# Waits for command to go into announcement mode 'make_announcement'
# Waits for command to go into listen mode 'listen_for_hotword'
# k9.on_event('listen for hotword')
pass
def on_event(self, event):
if event == 'game_done':
return Get_Command()
return self
class ChessGame(object):
'''
An assistant finite state machine that starts in waiting state and
will transition to a new state on when a transition event occurs.
It also supports a run command to enable each state to have its
own specific behaviours
'''
def __init__(self):
''' Initialise the K9 assistant in its Waiting state. '''
# Start with a default state.
self.state = Setup()
def run(self):
''' State behavior is delegated to the current state'''
self.state.run()
def on_event(self, event):
'''
Incoming events are delegated to the current state, which then
returns the next valid state.
'''
# The next state will be the result of the on_event function.
self.state = self.state.on_event(event)
authenticator = IAMAuthenticator(IAMAuthenticatorKey)
assistant = AssistantV2(
version='2020-04-01',
authenticator=authenticator)
assistant.set_service_url(assistant_service_URL)
# Create session
session = assistant.create_session(assistant_id).get_result()
print("Session established")
# Send text message
message = assistant.message(
assistant_id,
session["session_id"],
input={'text': 'What is your purpose?'},
context={
'metadata': {
'deployment': 'myDeployment'
}
}).get_result()
text = message["output"]["generic"][0]["text"]
print(text)
#print(json.dumps(message, indent=2))
assistant.delete_session(assistant_id, session["session_id"]).get_result()