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# -*- coding: utf-8 -*-
"""
sphinx.web.serve
~~~~~~~~~~~~~~~~
This module optionally wraps the `wsgiref` module so that it reloads code
automatically. Works with any WSGI application but it won't help in non
`wsgiref` environments. Use it only for development.
:copyright: 2007-2008 by Armin Ronacher, Georg Brandl.
:license: BSD.
"""
import os
import sys
import time
import thread
def reloader_loop(extra_files):
"""When this function is run from the main thread, it will force other
threads to exit when any modules currently loaded change.
:param extra_files: a list of additional files it should watch.
"""
mtimes = {}
while True:
for filename in filter(None, [getattr(module, '__file__', None)
for module in sys.modules.values()] +
extra_files):
while not os.path.isfile(filename):
filename = os.path.dirname(filename)
if not filename:
break
if not filename:
continue
if filename[-4:] in ('.pyc', '.pyo'):
filename = filename[:-1]
mtime = os.stat(filename).st_mtime
if filename not in mtimes:
mtimes[filename] = mtime
continue
if mtime > mtimes[filename]:
sys.exit(3)
time.sleep(1)
def restart_with_reloader():
"""Spawn a new Python interpreter with the same arguments as this one,
but running the reloader thread."""
while True:
print '* Restarting with reloader...'
args = [sys.executable] + sys.argv
if sys.platform == 'win32':
args = ['"%s"' % arg for arg in args]
new_environ = os.environ.copy()
new_environ['RUN_MAIN'] = 'true'
exit_code = os.spawnve(os.P_WAIT, sys.executable, args, new_environ)
if exit_code != 3:
return exit_code
def run_with_reloader(main_func, extra_watch):
"""
Run the given function in an independent Python interpreter.
"""
if os.environ.get('RUN_MAIN') == 'true':
thread.start_new_thread(main_func, ())
try:
reloader_loop(extra_watch)
except KeyboardInterrupt:
return
try:
sys.exit(restart_with_reloader())
except KeyboardInterrupt:
pass
def run_simple(hostname, port, make_app, use_reloader=False,
extra_files=None):
"""
Start an application using wsgiref and with an optional reloader.
"""
from wsgiref.simple_server import make_server
def inner():
application = make_app()
print '* Startup complete.'
srv = make_server(hostname, port, application)
try:
srv.serve_forever()
except KeyboardInterrupt:
pass
if os.environ.get('RUN_MAIN') != 'true':
print '* Running on http://%s:%d/' % (hostname, port)
if use_reloader:
run_with_reloader(inner, extra_files or [])
else:
inner()
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