Jonathan Le jonathanhle

Simplified Python OOP Basics

Class: A blueprint for creating objects (specific instances) with certain properties and methods. It's like a template for building objects.
```
class Car:
    pass
```
Object: An instance of a class. It's like building a car using the Car blueprint.

Security Tools for AWS

I often get asked which tools are good to use for securing your AWS infrastructure so I figured I'd write a short listof some useful Security Tools for the AWS Cloud Infrastructure.

This list is not intended be something completely exhaustive, more so provide a good launching pad for someone as they dig into AWS and want to make it secure from the start.

Open Source

This section focuses on tools and services provided by the community and released as open-source.

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

	# Tutorial https://www.daimto.com/how-to-get-a-google-access-token-with-curl/
	# YouTube video https://youtu.be/hBC_tVJIx5w
	# Client id from Google Developer console
	# Client Secret from Google Developer console
	# Scope this is a space seprated list of the scopes of access you are requesting.

	# Authorization link. Place this in a browser and copy the code that is returned after you accept the scopes.
	https://accounts.google.com/o/oauth2/auth?client_id=[Application Client Id]&redirect_uri=http://127.0.0.1&scope=[Scopes]&response_type=code

	# Exchange Authorization code for an access token and a refresh token.

	# sh -c "$(curl -fsSL https://gist.githubusercontent.com/gjgd/5a08da85a98bf147294f331461e44d1f/raw/a63bf0f4169a8ab651adfa0a56e676e6bc465876/setup-github-action-runner.sh)"

	# Update instance
	sudo apt update -y
	sudo apt upgrade -y

	# Install latest version of git
	sudo add-apt-repository ppa:git-core/ppa -y
	sudo apt-get update
	sudo apt-get install git -y

	import asyncio
	from typing import Coroutine, List, Sequence


	def _limit_concurrency(
	coroutines: Sequence[Coroutine], concurrency: int
	) -> List[Coroutine]:
	"""Decorate coroutines to limit concurrency.

	Enforces a limit on the number of coroutines that can run concurrently in higher

	From https://andyhunt.me/til/2021/03/04/you-can-fully-validate-a-complex-input-object-in-terraform/

	You can fully validate a complex input object in Terraform
	Posted: Thursday 04 March 2021 @ 12:12:55

	Terraform allows you to define your inputs as arbitrarily complex objects and lists of objects. For example, consider the following:

	variable "instances" {
	type = list(object({
	name = string

	variable "aws_lb_listener_arn" {
	description = "ARN of the ALB listener to include rules into"
	type = "string"
	}

	variable "okta_auth_server_base_url" {
	description = "Base URL of Okta's authorization server"
	type = "string"
	}

	# install https://pypa.github.io/pipx/

	pipx install git+https://github.com/jonathanhle/aws-sso-config-generator#subdirectory=src

	generate-aws-sso-config --start-url https://SSO_SITE.awsapps.com/start --output json --region us-east-1 --sso-region us-east-1

	eval $(aws-sso-creds --profile SecurityProd-Administrator export)