Kurt Griffiths kgriffs

There are at least three or four different approaches you can take to dealing with state in a Falcon app.

The first one is to have a module that exposes a function or attribute with read-only global state that doesn't change in between requests. This is typically used for app configuration that is loaded at startup. There are many variations on this theme, but here is an example showing one approach:

import os

import aumbry

	import functools

	def non_blocking_sync_to_async(func):
	"""Convert a non-blocking synchronous function to an async coroutine.

	Warning:
	This should only be used to wrap non-blocking synchronous functions.
	If the function may block for an extended period of time (e.g., it
	performs I/O), it should be scheduled to run in an Executor
	instead.

	def str_compare_timesafe(a, b):
	all_chars_match = 0

	for c1, c2 in zip(a, b):
	all_chars_match \|= ord(c1) ^ ord(c2)

	return all_chars_match == 0

	// https://stackoverflow.com/questions/11936816/execute-function-after-complete-page-load

	document.addEventListener("readystatechange", event => {

	if (event.target.readyState === "interactive") { //same as: document.addEventListener("DOMContentLoaded"... // same as jQuery.ready
	alert("All HTML DOM elements are accessible");
	}

	if (event.target.readyState === "complete") {
	alert("Now external resources are loaded too, like css,src etc... ");

	read -p "Push new image? [y/N]: " CONTINUE
	if [[ $CONTINUE =~ ^[Yy]$ ]]; then
	PYENV_VERSION=2.7.16 docker push gcr.io/example-214815/example-app:$CURRENT_VER
	PYENV_VERSION=2.7.16 docker push gcr.io/example-214815/example-app:latest
	fi

	import falcon
	import falcon.testing


	class Resource:

	def on_get(self, req, resp):
	# See also: https://falcon.readthedocs.io/en/stable/api/request_and_response.html#falcon.Request.get_param
	resp.body = req.get_param('a')
	resp.content_type = 'text/plain'

	class ChunkyBacon():

	def __init__(self, baconator):
	self._baconator = baconator

	async def on_get(self, req, resp, bacon_id=None):
	# Use JSON serializer to send it back in one chunk
	resp.media = await self._baconator.get_bacon(bacon_id)
	resp.set_header('X-Powered-By', 'Bacon')

	- name: Install puppeteer/chrome deps
	yum:
	name: "{{ item }}"
	state: latest
	with_items:
	- libX11
	- libXcomposite
	- libXcursor
	- libXdamage
	- libXext

	def _db_to_decimal(db_number):
	if db_number is None:
	return None

	return Decimal(int(db_number)) / 100


	def _decimal_to_db(decimal_number, currency=True):
	if decimal_number is None:
	return None