Call here.com from AWS lambda -- Part 1 urllib instead of requests --

lambda.py

# AWS doesn't allow use of request library we'd normally use, so sub out urllib
# Here, we alredy have a bearer token.  That gets replaced daily, want to schedule it into parameter store
# We'll also write the data to s3 instead of returning it

import urllib.request as UR
import json

url = "https://traffic.ls.hereapi.com/traffic/6.2/flow.xml?bbox=38.93036,-77.17164;38.93154,-77.16965"

auth_info = {"access_token":"btJhbGciOiJSXlKaGJHY2lPaUprYVMamAMiAnk5TElUOXpRHAyUjRQRjZMdjGLUQREX1dnTk4wbG. . . .1GUvAlJAXe_qbJoJydw","token_type":"bearer","expires_in":86399}
# to make the bearer token see https://gist.github.com/readytheory/002944329327675bb2a32fbb7cae9bd7

headers = {'Authorization': 'Bearer ' + auth_info["access_token"]}

req = UR.Request(url=url, data=None, headers=headers)

flow_result = UR.urlopen(req)

if flow_result.status != 200:
     raise RuntimeError("Status code for headers != 200")

print(flow_result.status)
return json.dumps(flow_result.read().decode(encoding='UTF-8'))