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- from __future__ import absolute_import, unicode_literals
-
- import weakref
-
- from django.core.signals import (
- got_request_exception, request_finished, request_started,
- )
- from django.db.backends.signals import connection_created
- from django.db.models.signals import (
- class_prepared, post_delete, post_init, post_migrate, post_save,
- pre_delete, pre_init, pre_save,
- )
- from django.utils.module_loading import import_string
- from django.utils.translation import ugettext_lazy as _, ungettext
-
- from debug_toolbar.panels import Panel
-
-
- class SignalsPanel(Panel):
- template = 'debug_toolbar/panels/signals.html'
-
- SIGNALS = {
- 'request_started': request_started,
- 'request_finished': request_finished,
- 'got_request_exception': got_request_exception,
- 'connection_created': connection_created,
- 'class_prepared': class_prepared,
- 'pre_init': pre_init,
- 'post_init': post_init,
- 'pre_save': pre_save,
- 'post_save': post_save,
- 'pre_delete': pre_delete,
- 'post_delete': post_delete,
- 'post_migrate': post_migrate,
- }
-
- def nav_subtitle(self):
- signals = self.get_stats()['signals']
- num_receivers = sum(len(s[2]) for s in signals)
- num_signals = len(signals)
- # here we have to handle a double count translation, hence the
- # hard coding of one signal
- if num_signals == 1:
- return ungettext("%(num_receivers)d receiver of 1 signal",
- "%(num_receivers)d receivers of 1 signal",
- num_receivers) % {'num_receivers': num_receivers}
- return ungettext("%(num_receivers)d receiver of %(num_signals)d signals",
- "%(num_receivers)d receivers of %(num_signals)d signals",
- num_receivers) % {'num_receivers': num_receivers,
- 'num_signals': num_signals}
-
- title = _("Signals")
-
- @property
- def signals(self):
- signals = self.SIGNALS.copy()
- for signal in self.toolbar.config['EXTRA_SIGNALS']:
- signal_name = signal.rsplit('.', 1)[-1]
- signals[signal_name] = import_string(signal)
- return signals
-
- def generate_stats(self, request, response):
- signals = []
- for name, signal in sorted(self.signals.items(), key=lambda x: x[0]):
- receivers = []
- for receiver in signal.receivers:
- receiver = receiver[1]
- if isinstance(receiver, weakref.ReferenceType):
- receiver = receiver()
- if receiver is None:
- continue
-
- receiver = getattr(receiver, '__wraps__', receiver)
- receiver_name = getattr(receiver, '__name__', str(receiver))
- if getattr(receiver, '__self__', None) is not None:
- receiver_class_name = getattr(receiver.__self__, '__class__', type).__name__
- text = "%s.%s" % (receiver_class_name, receiver_name)
- elif getattr(receiver, 'im_class', None) is not None: # Python 2 only
- receiver_class_name = receiver.im_class.__name__
- text = "%s.%s" % (receiver_class_name, receiver_name)
- else:
- text = "%s" % receiver_name
- receivers.append(text)
- signals.append((name, signal, receivers))
-
- self.record_stats({'signals': signals})
|
