def lambda_handler(event, context):
""" Route the incoming request based on type (LaunchRequest, IntentRequest,
etc.) The JSON body of the request is provided in the event parameter.
"""
logging.basicConfig(level=getattr(config, 'log_level', 'INFO'),
stream=sys.stderr)
# This `if` prevents other Skills from using this Lambda
if event['session']['application']['applicationId'] != config.APP_ID:
raise ValueError("Invalid Application ID")
try:
if event['request']['type'] == "IntentRequest":
return handle.intent(event['request'], event['session'])
elif event['request']['type'] == "LaunchRequest":
return reply.build(
"", # TODO: Write this
is_end=False)
elif event['request']['type'] == "SessionEndedRequest":
return reply.build("Goodbye!", is_end=True)
else:
# I don't think there's any other kinds of requests.
return reply.build(
"", # TODO: Write this
is_end=False)
except ReadTimeout:
log.exception('Timeout accessing Rainforest cloud.')
return reply.build("I couldn't access the Rainforest Cloud.",
is_end=True)
except Exception as err: # NOQA
log.exception('Unhandled exception for event\n%s\n' % str(event))
return reply.build("Sorry, something went wrong.",
persist=event['session'].get('attributes', {}),
is_end=True)
def check_price(intent, session):
price = _poller().get_price()['Price']
card_text = "$%.2f per kilowatt-hour" % (price / 100)
return reply.build("It's %s %s." % (str(price)[:-2], str(price)[-2:]),
card_title="Your Electicity Price",
card_text='\n'.join(card_text),
is_end=True)
def check_demand(intent, session):
demand = _poller().get_instantaneous_demand()['Demand']
utterance = "Current demand is "
if demand < 1:
utterance += "%d Watts." % (demand * 1000)
else:
utterance += "%d kilowatts." % demand
return reply.build(utterance, is_end=True)
def intent(req, session):
"""Identify and handle IntentRequest objects
Parameters
----------
req : dict
JSON following the Alexa "IntentRequest" schema
session : dict
JSON following the Alexa "Session" schema
Returns
-------
dict
JSON following the Alexa reply schema
"""
intent = req['intent']
if session.setdefault('attributes', {}) is None:
# Ensure that there's always a dictionary under "attributes".
session['attributes'] = {}
# Dispatch each Intent to the correct handler.
if intent['name'] == 'CheckDemandIntent':
return check_demand(intent, session)
elif intent['name'] == 'CheckPriceIntent':
return check_price(intent, session)
elif intent['name'] == 'CheckSummationIntent':
return check_consumption(intent, session)
elif intent['name'] in ['AMAZON.StopIntent', 'AMAZON.CancelIntent']:
return reply.build("Okay, exiting.", is_end=True)
elif intent['name'] == 'AMAZON.HelpIntent':
return reply.build(
"This sentence is helpful.", # TODO
is_end=False)
else:
return reply.build("I didn't understand that. Try again?",
persist=session['attributes'],
is_end=False)
def check_consumption(intent, session):
return reply.build("This code not yet written.", is_end=True)