dump-py-state.py
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	#!/usr/bin/env python3

	# -------------------------------------------------------------
	# rOPS — compile a #!py .sls file and dump result in YAML
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
	# Project: Nasqueron
	# Created: 2018-10-17
	# Description: Read the web_content_sls pillar entry
	# and regenerate the webserver-content include.
	# License: BSD-2-Clause
	# -------------------------------------------------------------


	import os
	import subprocess
	import sys
	import yaml


	# -------------------------------------------------------------
	# Pillar helper
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def get_pillar_files(pillar_directory):
	pillar_files = []

	for dir_path, dir_names, file_names in os.walk(pillar_directory):
	files = [
	os.path.join(dir_path, file_name)
	for file_name in file_names
	if file_name.endswith(".sls")
	]

	pillar_files.extend(files)

	return pillar_files


	def load_pillar(pillar_directory):
	pillar = {}

	for pillar_file in get_pillar_files(pillar_directory):
	data = yaml.safe_load(open(pillar_file, "r"))
	pillar.update(data)

	return pillar


	# -------------------------------------------------------------
	# Grains helper
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def system(args):
	result = subprocess.run(args, stdout=subprocess.PIPE)
	return result.stdout.decode("utf-8").strip()


	# -------------------------------------------------------------
	# Source code helper
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def run_shim():
	return "\n\nif __name__ == '__main__':\n\tprint(yaml.dump(run(), default_flow_style=False))"


	def assemble_source_code(filename):
	with open(filename, "r") as fd:
	source_code = fd.read()

	return source_code + run_shim()


	# -------------------------------------------------------------
	# Run task
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	if __name__ == "__main__":
	argc = len(sys.argv)

	if argc < 2:
	print("Usage: dump-py-state.py <sls file>", file=sys.stderr)
	exit(1)

	sls_file = sys.argv[1]

	try:
	source_code_to_dump = assemble_source_code(sls_file)
	except OSError as ex:
	print(ex, file=sys.stderr)
	exit(ex.errno)

	__pillar__ = load_pillar("pillar")
	__grains__ = {"os": system(["uname", "-o"])}

	exec(source_code_to_dump)

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