blender-id/bid_main/signals.py

73 lines
2.6 KiB
Python

import logging
from django.contrib.auth.signals import user_logged_in
from django.core.signals import got_request_exception
from django.db.models import F
from django.db.models.signals import m2m_changed, post_delete
from django.dispatch import receiver
from . import models
import bid_main.utils as utils
import bid_main.file_utils
log = logging.getLogger(__name__)
@receiver(got_request_exception)
def log_exception(sender, **kwargs):
log.exception("uncaught exception occurred")
@receiver(user_logged_in)
def update_user_for_login(sender, request, user, **kwargs):
"""Updates user fields upon login.
Only saves specific fields, so that the webhook trigger knows what changed.
"""
log.debug("User %s logged in, storing login information", user.email)
user.login_count = F("login_count") + 1
fields = {"login_count"}
# Only move 'current' to 'last' login IP if the IP address is different.
request_ip = utils.get_client_ip(request)
if request_ip and user.current_login_ip != request_ip:
user.last_login_ip = F("current_login_ip")
user.current_login_ip = request_ip
fields.update({"last_login_ip", "current_login_ip"})
user.save(update_fields=fields)
@receiver(m2m_changed)
def modified_user_role(sender, instance, action, reverse, model, **kwargs):
my_log = log.getChild("modified_user_role")
if not action.startswith("post_"):
my_log.debug("Ignoring m2m %r on %s - %s", action, type(instance), model)
return
if not isinstance(instance, models.User) or not issubclass(model, models.Role):
my_log.debug("Ignoring m2m %r on %s - %s", action, type(instance), model)
return
if not instance.id:
my_log.debug("Ignoring m2m %r on %s (no ID) - %s", action, type(instance), model)
return
# User's roles changed, so we have to update their public_roles_as_string.
new_roles = " ".join(sorted(instance.public_roles()))
if new_roles != instance.public_roles_as_string:
instance.public_roles_as_string = new_roles
my_log.debug(" saving user again for new roles %r", new_roles)
instance.save(update_fields=["public_roles_as_string"])
else:
my_log.debug(" new roles are old roles: %r", new_roles)
@receiver(post_delete, sender=models.User)
def delete_orphaned_avatar_files(sender, instance, **kwargs):
"""Delete avatar files from storage when User record is deleted."""
if not instance.avatar:
log.info('User pk=%d has no avatar, nothing to clean up', instance.pk)
return
bid_main.file_utils.delete_avatar_files(instance.avatar.name)