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96 lines
3.3 KiB
96 lines
3.3 KiB
# -*- coding: utf-8 -*-
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#
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import json
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from django.dispatch import receiver
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from django.db.models.signals import post_save, pre_save
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from django.conf import LazySettings, empty, global_settings
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from django.db.utils import ProgrammingError, OperationalError
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from django.core.cache import cache
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from jumpserver.utils import current_request
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from common.utils import get_logger, ssh_key_gen
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from common.signals import django_ready
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from .models import Setting
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logger = get_logger(__file__)
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@receiver(post_save, sender=Setting, dispatch_uid="my_unique_identifier")
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def refresh_settings_on_changed(sender, instance=None, **kwargs):
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if instance:
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instance.refresh_setting()
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@receiver(django_ready, dispatch_uid="my_unique_identifier")
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def monkey_patch_settings(sender, **kwargs):
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cache_key_prefix = '_SETTING_'
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custom_need_cache_settings = [
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'AUTHENTICATION_BACKENDS', 'TERMINAL_HOST_KEY',
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]
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custom_no_cache_settings = [
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'BASE_DIR', 'VERSION', 'AUTH_OPENID',
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]
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django_settings = dir(global_settings)
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uncached_settings = [i for i in django_settings if i.isupper()]
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uncached_settings = [i for i in uncached_settings if not i.startswith('EMAIL')]
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uncached_settings = [i for i in uncached_settings if not i.startswith('SESSION_REDIS')]
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uncached_settings = [i for i in uncached_settings if i not in custom_need_cache_settings]
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uncached_settings.extend(custom_no_cache_settings)
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def monkey_patch_getattr(self, name):
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if name not in uncached_settings:
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key = cache_key_prefix + name
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cached = cache.get(key)
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if cached is not None:
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return cached
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if self._wrapped is empty:
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self._setup(name)
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val = getattr(self._wrapped, name)
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return val
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def monkey_patch_setattr(self, name, value):
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key = cache_key_prefix + name
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cache.set(key, value, None)
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if name == '_wrapped':
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self.__dict__.clear()
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else:
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self.__dict__.pop(name, None)
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super(LazySettings, self).__setattr__(name, value)
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def monkey_patch_delattr(self, name):
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super(LazySettings, self).__delattr__(name)
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self.__dict__.pop(name, None)
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key = cache_key_prefix + name
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cache.delete(key)
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try:
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cache.delete_pattern(cache_key_prefix+'*')
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LazySettings.__getattr__ = monkey_patch_getattr
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LazySettings.__setattr__ = monkey_patch_setattr
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LazySettings.__delattr__ = monkey_patch_delattr
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Setting.refresh_all_settings()
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except (ProgrammingError, OperationalError):
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pass
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@receiver(django_ready)
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def auto_generate_terminal_host_key(sender, **kwargs):
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try:
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if Setting.objects.filter(name='TERMINAL_HOST_KEY').exists():
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return
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private_key, public_key = ssh_key_gen()
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value = json.dumps(private_key)
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Setting.objects.create(name='TERMINAL_HOST_KEY', value=value)
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except:
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pass
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@receiver(pre_save, dispatch_uid="my_unique_identifier")
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def on_create_set_created_by(sender, instance=None, **kwargs):
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if getattr(instance, '_ignore_auto_created_by', False) is True:
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return
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if hasattr(instance, 'created_by') and not instance.created_by:
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if current_request and current_request.user.is_authenticated:
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instance.created_by = current_request.user.name
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