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# -*- coding: utf-8 -*-
import sys
import importlib
import traceback
from django.apps import apps
from django_extensions.management.email_notifications import EmailNotificationCommand
from django_extensions.management.utils import signalcommand
class Command(EmailNotificationCommand):
help = 'Runs a script in django context.'
def add_arguments(self, parser):
super(Command, self).add_arguments(parser)
parser.add_argument('script', nargs='+')
parser.add_argument(
'--fixtures', action='store_true', dest='infixtures', default=False,
help='Only look in app.fixtures subdir',
)
parser.add_argument(
'--noscripts', action='store_true', dest='noscripts', default=False,
help='Look in app.scripts subdir',
)
parser.add_argument(
'-s', '--silent', action='store_true', dest='silent', default=False,
help='Run silently, do not show errors and tracebacks',
)
parser.add_argument(
'--no-traceback', action='store_true', dest='no_traceback', default=False,
help='Do not show tracebacks',
)
parser.add_argument(
'--script-args', nargs='*', type=str,
help='Space-separated argument list to be passed to the scripts. Note that the '
'same arguments will be passed to all named scripts.',
)
@signalcommand
def handle(self, *args, **options):
NOTICE = self.style.SQL_TABLE
NOTICE2 = self.style.SQL_FIELD
ERROR = self.style.ERROR
ERROR2 = self.style.NOTICE
subdirs = []
scripts = options['script']
if not options.get('noscripts'):
subdirs.append('scripts')
if options.get('infixtures'):
subdirs.append('fixtures')
verbosity = int(options.get('verbosity', 1))
show_traceback = options.get('traceback', True)
if show_traceback is None:
# XXX: traceback is set to None from Django ?
show_traceback = True
no_traceback = options.get('no_traceback', False)
if no_traceback:
show_traceback = False
silent = options.get('silent', False)
if silent:
verbosity = 0
email_notifications = options.get('email_notifications', False)
if len(subdirs) < 1:
print(NOTICE("No subdirs to run left."))
return
if len(scripts) < 1:
print(ERROR("Script name required."))
return
def run_script(mod, *script_args):
try:
mod.run(*script_args)
if email_notifications:
self.send_email_notification(notification_id=mod.__name__)
except Exception:
if silent:
return
if verbosity > 0:
print(ERROR("Exception while running run() in '%s'" % mod.__name__))
if email_notifications:
self.send_email_notification(
notification_id=mod.__name__, include_traceback=True)
if show_traceback:
raise
def my_import(mod):
if verbosity > 1:
print(NOTICE("Check for %s" % mod))
# check if module exists before importing
try:
importlib.import_module(mod)
t = __import__(mod, [], [], [" "])
except (ImportError, AttributeError) as e:
if str(e).startswith('No module named'):
try:
exc_type, exc_value, exc_traceback = sys.exc_info()
try:
if exc_traceback.tb_next.tb_next is None:
return False
except AttributeError:
pass
finally:
exc_traceback = None
if verbosity > 1:
if verbosity > 2:
traceback.print_exc()
print(ERROR("Cannot import module '%s': %s." % (mod, e)))
return False
if hasattr(t, "run"):
if verbosity > 1:
print(NOTICE2("Found script '%s' ..." % mod))
return t
else:
if verbosity > 1:
print(ERROR2("Find script '%s' but no run() function found." % mod))
def find_modules_for_script(script):
""" find script module which contains 'run' attribute """
modules = []
# first look in apps
for app in apps.get_app_configs():
for subdir in subdirs:
mod = my_import("%s.%s.%s" % (app.name, subdir, script))
if mod:
modules.append(mod)
# try app.DIR.script import
sa = script.split(".")
for subdir in subdirs:
nn = ".".join(sa[:-1] + [subdir, sa[-1]])
mod = my_import(nn)
if mod:
modules.append(mod)
# try direct import
if script.find(".") != -1:
mod = my_import(script)
if mod:
modules.append(mod)
return modules
if options.get('script_args'):
script_args = options['script_args']
else:
script_args = []
for script in scripts:
modules = find_modules_for_script(script)
if not modules:
if verbosity > 0 and not silent:
print(ERROR("No (valid) module for script '%s' found" % script))
if verbosity < 2:
print(ERROR("Try running with a higher verbosity level like: -v2 or -v3"))
for mod in modules:
if verbosity > 1:
print(NOTICE2("Running script '%s' ..." % mod.__name__))
run_script(mod, *script_args)
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