def lambda_handler(event, context):
factory = EventFactory(event)
event_instance = factory.get_instance()
slack_payload = event_instance.get_slack_payload()
headers = {'Content-Type': 'application/json'}
data = json.dumps(slack_payload)
data = data.encode('ascii')
request = urllib.request.Request(url=webhook_url,
data=data,
headers=headers)
urllib.request.urlopen(request)
