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from __future__ import unicode_literals
from optparse import make_option
from datetime import datetime
import errno
import os
import re
import sys
import socket
from django.core.management.base import BaseCommand, CommandError
from django.core.servers.basehttp import run, get_internal_wsgi_application
from django.db import connections, DEFAULT_DB_ALIAS
from django.db.migrations.executor import MigrationExecutor
from django.utils import autoreload
from django.utils.encoding import force_text, get_system_encoding
from django.utils import six
from django.core.exceptions import ImproperlyConfigured
naiveip_re = re.compile(r"""^(?:
(?P<addr>
(?P<ipv4>\d{1,3}(?:\.\d{1,3}){3}) | # IPv4 address
(?P<ipv6>\[[a-fA-F0-9:]+\]) | # IPv6 address
(?P<fqdn>[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*) # FQDN
):)?(?P<port>\d+)$""", re.X)
DEFAULT_PORT = "8000"
class Command(BaseCommand):
option_list = BaseCommand.option_list + (
make_option('--ipv6', '-6', action='store_true', dest='use_ipv6', default=False,
help='Tells Django to use an IPv6 address.'),
make_option('--nothreading', action='store_false', dest='use_threading', default=True,
help='Tells Django to NOT use threading.'),
make_option('--noreload', action='store_false', dest='use_reloader', default=True,
help='Tells Django to NOT use the auto-reloader.'),
)
help = "Starts a lightweight Web server for development."
args = '[optional port number, or ipaddr:port]'
# Validation is called explicitly each time the server is reloaded.
requires_system_checks = False
def get_handler(self, *args, **options):
"""
Returns the default WSGI handler for the runner.
"""
return get_internal_wsgi_application()
def handle(self, addrport='', *args, **options):
from django.conf import settings
if not settings.DEBUG and not settings.ALLOWED_HOSTS:
raise CommandError('You must set settings.ALLOWED_HOSTS if DEBUG is False.')
self.use_ipv6 = options.get('use_ipv6')
if self.use_ipv6 and not socket.has_ipv6:
raise CommandError('Your Python does not support IPv6.')
if args:
raise CommandError('Usage is runserver %s' % self.args)
self._raw_ipv6 = False
if not addrport:
self.addr = ''
self.port = DEFAULT_PORT
else:
m = re.match(naiveip_re, addrport)
if m is None:
raise CommandError('"%s" is not a valid port number '
'or address:port pair.' % addrport)
self.addr, _ipv4, _ipv6, _fqdn, self.port = m.groups()
if not self.port.isdigit():
raise CommandError("%r is not a valid port number." % self.port)
if self.addr:
if _ipv6:
self.addr = self.addr[1:-1]
self.use_ipv6 = True
self._raw_ipv6 = True
elif self.use_ipv6 and not _fqdn:
raise CommandError('"%s" is not a valid IPv6 address.' % self.addr)
if not self.addr:
self.addr = '::1' if self.use_ipv6 else '127.0.0.1'
self._raw_ipv6 = bool(self.use_ipv6)
self.run(*args, **options)
def run(self, *args, **options):
"""
Runs the server, using the autoreloader if needed
"""
use_reloader = options.get('use_reloader')
if use_reloader:
autoreload.main(self.inner_run, args, options)
else:
self.inner_run(*args, **options)
def inner_run(self, *args, **options):
from django.conf import settings
from django.utils import translation
threading = options.get('use_threading')
shutdown_message = options.get('shutdown_message', '')
quit_command = 'CTRL-BREAK' if sys.platform == 'win32' else 'CONTROL-C'
self.stdout.write("Performing system checks...\n\n")
self.validate(display_num_errors=True)
try:
self.check_migrations()
except ImproperlyConfigured:
pass
now = datetime.now().strftime('%B %d, %Y - %X')
if six.PY2:
now = now.decode(get_system_encoding())
self.stdout.write((
"%(started_at)s\n"
"Django version %(version)s, using settings %(settings)r\n"
"Starting development server at http://%(addr)s:%(port)s/\n"
"Quit the server with %(quit_command)s.\n"
) % {
"started_at": now,
"version": self.get_version(),
"settings": settings.SETTINGS_MODULE,
"addr": '[%s]' % self.addr if self._raw_ipv6 else self.addr,
"port": self.port,
"quit_command": quit_command,
})
# django.core.management.base forces the locale to en-us. We should
# set it up correctly for the first request (particularly important
# in the "--noreload" case).
translation.activate(settings.LANGUAGE_CODE)
try:
handler = self.get_handler(*args, **options)
run(self.addr, int(self.port), handler,
ipv6=self.use_ipv6, threading=threading)
except socket.error as e:
# Use helpful error messages instead of ugly tracebacks.
ERRORS = {
errno.EACCES: "You don't have permission to access that port.",
errno.EADDRINUSE: "That port is already in use.",
errno.EADDRNOTAVAIL: "That IP address can't be assigned-to.",
}
try:
error_text = ERRORS[e.errno]
except KeyError:
error_text = force_text(e)
self.stderr.write("Error: %s" % error_text)
# Need to use an OS exit because sys.exit doesn't work in a thread
os._exit(1)
except KeyboardInterrupt:
if shutdown_message:
self.stdout.write(shutdown_message)
sys.exit(0)
def check_migrations(self):
"""
Checks to see if the set of migrations on disk matches the
migrations in the database. Prints a warning if they don't match.
"""
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
plan = executor.migration_plan(executor.loader.graph.leaf_nodes())
if plan:
self.stdout.write(self.style.NOTICE("\nYou have unapplied migrations; your app may not work properly until they are applied."))
self.stdout.write(self.style.NOTICE("Run 'python manage.py migrate' to apply them.\n"))
# Kept for backward compatibility
BaseRunserverCommand = Command
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