def do_start(self, data_stream_name):
print('Called do_start()')
''' TODO: use a feature stream or SQS queue
# Create a feature stream, and wait for it to become active
self.kin.create_stream(self.feature_stream_name, 1)
while True:
status = self.kin.describe_stream(self.feature_stream_name)
if status['StreamDescription']['StreamStatus'] == 'ACTIVE':
print('Stream is ACTIVE: ' + self.feature_stream_name)
break
time.sleep(1.0)
'''
# Create and dispatch an AudioProc, which will listen to the data stream
# and produce features on the feature queue
print('Create AudioProc(' + data_stream_name + ')')
self.audio_proc = AudioProc(data_stream_name, self.feature_queue_name, constants.RATE,
constants.SAMPLES_PER_RECORD, constants.CHUNK,
constants.STEP, 'TRIM_HORIZON')
self.audio_proc.start()
# Create and dispatch a DBN operational module, which will determine whether
# the dog is barking, based on the feature stream
self.dbn_op = dbn_op.DbnOp(constants.REGION, self.feature_queue_name, self.hub_queue_name)
self.dbn_op.start()
# Create and dispatch a RL operational module, which will determine which
# sounds at what volume to play. Based on whether the dog stops barking, and
# the unpleasantness of the sounds, it will learn which sounds work best.
# the RL module reads dog status messages from the event_queue and writes
# play sound commands to the hub_queue
self.rl_op = rl_op.RlOp(self.event_queue_name, self.hub_queue_name)
self.rl_op.start()
class RemoteHub:
def __init__(self):
self.kin = boto.kinesis.connect_to_region(constants.REGION)
self.conn = boto.sqs.connect_to_region(constants.REGION)
self.audio_proc = None
self.dbn_op = None
self.rl_op = None
self.hub_queue_name = constants.HUB_QUEUE_UP
self.hub_queue_down_name = constants.HUB_QUEUE_DOWN
self.event_queue_name = constants.EVENT_QUEUE
dcs_queues = self.conn.get_all_queues(prefix='dcs')
if constants.VERBOSE:
print(dcs_queues)
queue_names = [q.name for q in dcs_queues]
if self.hub_queue_name not in queue_names:
# setup_dcs.setup_dcs()
print('Hub up queue is not set up')
exit(-1)
if self.hub_queue_down_name not in queue_names:
# setup_dcs.setup_dcs()
print('Hub down queue is not set up')
exit(-1)
if self.event_queue_name not in queue_names:
# setup_dcs.setup_dcs()
print('Event queue is not set up')
exit(-1)
self.hub_queue = self.conn.get_queue(self.hub_queue_name)
self.hub_queue.set_message_class(mess.MHMessage)
self.hub_queue_down = self.conn.get_queue(self.hub_queue_down_name)
self.hub_queue_down.set_message_class(mess.MHMessage)
self.event_queue = self.conn.get_queue(self.event_queue_name)
self.event_queue.set_message_class(mess.MHMessage)
p = re.compile('\.')
self.feature_queue_name = 'dcs_' + 'feature_queue'.join(p.split(str(time.time())))
self.feature_queue = self.conn.create_queue(self.feature_queue_name)
# Wait for feature queue to be ready
while True:
if self.conn.lookup(self.feature_queue_name):
break;
time.sleep(1.0)
self.dog_affected_prob = 0.0
def run(self):
while True:
m = self.hub_queue.read(visibility_timeout=None,
wait_time_seconds=1)
if m is None:
continue
self.hub_queue.delete_message(m)
# m = mess.MHMessage(raw_mess.get_body())
# if constants.VERBOSE:
print('hub_remote: received SQS message: ' + str(m.get_body()))
command = m[constants.ATTR_COMMAND]
if command == constants.START_OPERATING:
self.do_start(m[constants.ATTR_STREAM_NAME])
elif command == constants.STOP_OPERATING:
self.do_stop()
elif command == constants.ATTR_DOG_STATE:
self.report_barking_state(m)
elif command == constants.PLAY_SOUND:
print('hub_remote: outputting sound: ' + str(m.get_body()))
self.output_sound(m[constants.ATTR_SOUND_FILE],
m[constants.ATTR_VOLUME_LEVEL])
def do_start(self, data_stream_name):
print('Called do_start()')
''' TODO: use a feature stream or SQS queue
# Create a feature stream, and wait for it to become active
self.kin.create_stream(self.feature_stream_name, 1)
while True:
status = self.kin.describe_stream(self.feature_stream_name)
if status['StreamDescription']['StreamStatus'] == 'ACTIVE':
print('Stream is ACTIVE: ' + self.feature_stream_name)
break
time.sleep(1.0)
'''
# Create and dispatch an AudioProc, which will listen to the data stream
# and produce features on the feature queue
print('Create AudioProc(' + data_stream_name + ')')
self.audio_proc = AudioProc(data_stream_name, self.feature_queue_name, constants.RATE,
constants.SAMPLES_PER_RECORD, constants.CHUNK,
constants.STEP, 'TRIM_HORIZON')
self.audio_proc.start()
# Create and dispatch a DBN operational module, which will determine whether
# the dog is barking, based on the feature stream
self.dbn_op = dbn_op.DbnOp(constants.REGION, self.feature_queue_name, self.hub_queue_name)
self.dbn_op.start()
# Create and dispatch a RL operational module, which will determine which
# sounds at what volume to play. Based on whether the dog stops barking, and
# the unpleasantness of the sounds, it will learn which sounds work best.
# the RL module reads dog status messages from the event_queue and writes
# play sound commands to the hub_queue
self.rl_op = rl_op.RlOp(self.event_queue_name, self.hub_queue_name)
self.rl_op.start()
# Delete expensive resources before exiting.
# Give other components a chance to save state.
# Stop in reverse order of starting.
def do_stop(self):
print('Called do_stop()')
self.dbn_op.stop()
self.audio_proc.stop()
#self.kin.delete_stream(self.feature_stream_name, 1)
# Tell the reinforcement learning module the current barking state
def report_barking_state(self, state_mess):
# Simulate effect on dog
if self.dog_affected_prob > 0:
if state_mess[constants.ATTR_DOG_STATE] == constants.DOG_STATE_BARKING:
p = np.random.rand()
if p < self.dog_affected_prob:
state_mess[constants.ATTR_DOG_STATE] = constants.DOG_STATE_QUIET
self.dog_affected_prob *= constants.DOG_MEMORY_DECAY
m = mess.MHMessage(self.event_queue, state_mess)
self.event_queue.write(m)
# Tell the local hub to play a sound at a volume
def output_sound(self, sound_file, volume_level):
m = mess.MHMessage(self.hub_queue_down)
m[constants.ATTR_COMMAND] = constants.PLAY_SOUND
m[constants.ATTR_SOUND_FILE] = sound_file
m[constants.ATTR_VOLUME_LEVEL] = str(volume_level)
self.hub_queue_down.write(m)
# Simulate effect on dog - less likely to bark after playing a sound
self.dog_affected_prob = constants.EFFECTS[sound_file] * int(volume_level) * constants.VOLUME_EFFECT
