Created
July 1, 2019 13:27
-
-
Save pwilken/e184418c07f6ab92cad13df5cf3cfff7 to your computer and use it in GitHub Desktop.
Use Twilio API with lambda function over AWS API Gateway.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import base64 | |
| import json | |
| import os | |
| import urllib | |
| from urllib import request, parse | |
| TWILIO_SMS_URL = "https://api.twilio.com/2010-04-01/Accounts/{}/Messages.json" | |
| TWILIO_CALL_URL = "https://api.twilio.com/2010-04-01/Accounts/{}/Calls.json" | |
| TWILIO_ACCOUNT_SID = os.environ.get("TWILIO_ACCOUNT_SID") | |
| TWILIO_AUTH_TOKEN = os.environ.get("TWILIO_AUTH_TOKEN") | |
| def lambda_handler(event, context): | |
| # json body | |
| to_number = event['To'] | |
| from_number = event['From'] | |
| body = event['Body'] | |
| action = event['Action'] | |
| if not TWILIO_ACCOUNT_SID: | |
| return "Unable to access Twilio Account SID." | |
| elif not TWILIO_AUTH_TOKEN: | |
| return "Unable to access Twilio Auth Token." | |
| elif not to_number: | |
| return "The function needs a 'To' number in the format +12023351493" | |
| elif not from_number: | |
| return "The function needs a 'From' number in the format +19732644156" | |
| elif not body: | |
| return "The function needs a 'Body' message to send." | |
| elif not action: | |
| return "The function needs a 'Action' SMS/WhatsApp/Call." | |
| if action == "WHATSAPP": | |
| from_number = "whatsapp:" + from_number | |
| to_number = "whatsapp:" + to_number | |
| # insert Twilio Account SID into the REST API URL | |
| if action == "CALL": | |
| populated_url = TWILIO_CALL_URL.format(TWILIO_ACCOUNT_SID) | |
| post_params = {"To": to_number, "From": from_number, "Url": body} | |
| else: | |
| populated_url = TWILIO_SMS_URL.format(TWILIO_ACCOUNT_SID) | |
| post_params = {"To": to_number, "From": from_number, "Body": body} | |
| # encode the parameters for Python's urllib | |
| data = parse.urlencode(post_params).encode() | |
| req = request.Request(populated_url) | |
| # add authentication header to request based on Account SID + Auth Token | |
| authentication = "{}:{}".format(TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN) | |
| base64string = base64.b64encode(authentication.encode('utf-8')) | |
| req.add_header("Authorization", "Basic %s" % base64string.decode('ascii')) | |
| try: | |
| # perform HTTP POST request | |
| with request.urlopen(req, data) as f: | |
| print("Twilio returned {}".format(str(f.read().decode('utf-8')))) | |
| except Exception as e: | |
| # something went wrong! | |
| return e | |
| return action + " successfully!" |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment