web_server_local.py

#!/usr/bin/env python3

"""Utility to start local webserver for specified build name."""

import argparse
import os
from functools import partial
from http.server import SimpleHTTPRequestHandler, test

import settings

parser = argparse.ArgumentParser(description=__doc__)

parser.add_argument('build', type=str, nargs='?',
                    help='Specify build name')
parser.add_argument('--port', default=8000, type=int,
                    help='Specify alternate port [default: %(default)s]')
args = parser.parse_args()

try:
    settings.load(args.build)
except ValueError as err:
    parser.error(err)

directory = os.fspath(settings.build_target_dir)
if not os.path.isdir(directory):
    parser.error(f'Directory not found: {directory}')

handler_class = partial(SimpleHTTPRequestHandler, directory=directory)  # Python 3.7+
print(f'Update channel: {settings.build_name}')
test(HandlerClass=handler_class, port=args.port, bind='localhost')