Nahuel Ambrosini Ambro17

How to setup AWS lambda function to talk to the internet and VPC

I'm going to walk you through the steps for setting up a AWS Lambda to talk to the internet and a VPC. Let's dive in.

So it might be really unintuitive at first but lambda functions have three states.

No VPC, where it can talk openly to the web, but can't talk to any of your AWS services.
VPC, the default setting where the lambda function can talk to your AWS services but can't talk to the web.
VPC with NAT, The best of both worlds, AWS services and web.

	from __future__ import annotations

	from aiohttp import web
	from strawberry.http import process_result

	import loader
	import graph

	routes = web.RouteTableDef()

	#!/usr/bin/env python3
	# -- coding: utf-8 --
	"""
	List the most recent branches you have been working on, and checkout any of them.

	# Install

	Put this file somewhere in your PATH, and set execution permissions.
	Git will recognize it as the "recent-branches" subcommand.

	{
	"Records": [
	{
	"messageId": "74140753-924c-4084-8a74-768b6a33e982",
	"receiptHandle": "AQEBRb3GKquMc9HvQSh9GDZ++ETxyjxN45wtOB449zvUlUlaBmoxyhXhr5QWyVNoUyvytHvz5GFfeZq/Af4SpBYe6j85T0rYi/TA+690UXJuv3Vc/U9ql5NLHdLSmvqvsQDVXi7TWzcX0ER+",
	"body": "test",
	"attributes": {
	"ApproximateReceiveCount": "1",
	"SentTimestamp": "1531136255184",
	"SenderId": "AROAJ3ZGMT746QFJO6ZL4:sqs-lambda-tutorial-production-start-lambda",

	from datetime import datetime, timedelta
	import functools


	def timed_cache(**timedelta_kwargs):

	def _wrapper(f):
	update_delta = timedelta(**timedelta_kwargs)
	next_update = datetime.utcnow() + update_delta
	# Apply @lru_cache to f with no cache size limit

	# Add the following to your existing VPC CF stack

	# create 2 subnets, lambdas like to be in multiple subnets
	Private1:
	Type: AWS::EC2::Subnet
	Properties:
	VpcId: !Ref VPC
	AvailabilityZone: !Select [ 0, !GetAZs ]
	CidrBlock: !Ref Private1CIDR

	"""
	Mostly the Google quickstart.py code with the "freebusy" service running.

	Also shows how to make datetimes using pytz.

	Follow these instructions to get access credentials:

	https://developers.google.com/google-apps/calendar/quickstart/python

	"""

	"""Flask Blueprint sublcass that overrides `route`.

	Automatically adds rules for endpoints with and without trailing slash.
	"""
	from flask import Blueprint, Flask


	class BaseBlueprint(Blueprint):

	"""The Flask Blueprint subclass."""