Ensure uniqueness of stream configs in port-proxy

import socket

import subprocess

import tempfile

import uuid

from urllib import parse

from typing import Iterable, Set, TextIO, Union

	Manage an Nginx stream configuration

	"""

	uuid = uuid.uuid1(clock_seq=0)

	def __init__(self, name, **values):

		self.name = name

		self.path = None

		"""

		Add the stream config

		"""

		self.path = pathlib.Path(nginx_base).joinpath(f'streams/{self.name}.conf')

		uid = self.uuid

		while self.path is None or self.path.exists():

			uid = uuid.uuid5(uid, self.name)

			self.path = pathlib.Path(nginx_base).joinpath(f'streams/{uid}.conf')

		template = engine.get_template('stream.conf')

		with self.path.open('w') as conf:

			conf.writelines(template.stream(**self.vals))

		for port in ports:

			logger.debug("generating for %s and %s", addr, port['name'])

			yield uid, StreamConfig(

				name=f"{name}.{port['name']}",

				name=f"{name}.{port['name']} on {addr}",

				protocol=port['protocol'],

				external_port=(addr, port['port']),

				# TODO: Awaiting #20