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94 lines
2.9 KiB
94 lines
2.9 KiB
import inspect |
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from importlib import import_module |
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from django.apps import AppConfig |
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from django.db.models.signals import post_migrate |
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from django.db.models.signals import post_save |
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from django.dispatch import receiver |
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from django.utils.functional import LazyObject |
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from common.decorators import on_transaction_commit |
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from common.utils import get_logger |
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from common.utils.connection import RedisPubSub |
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from notifications.backends import BACKEND |
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from users.models import User |
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from .models import MessageContent, SystemMsgSubscription, UserMsgSubscription |
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from .notifications import SystemMessage |
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logger = get_logger(__name__) |
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class NewSiteMsgSubPub(LazyObject): |
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def _setup(self): |
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self._wrapped = RedisPubSub('notifications.SiteMessageCome') |
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new_site_msg_chan = NewSiteMsgSubPub() |
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@receiver(post_save, sender=MessageContent) |
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@on_transaction_commit |
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def on_site_message_create(sender, instance, created, **kwargs): |
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if not created: |
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return |
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logger.debug('New site msg created, publish it') |
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user_ids = instance.users.all().values_list('id', flat=True) |
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user_ids = [str(i) for i in user_ids] |
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data = { |
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'id': str(instance.id), |
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'subject': instance.subject, |
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'message': instance.message, |
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'users': user_ids |
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} |
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new_site_msg_chan.publish(data) |
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@receiver(post_migrate, dispatch_uid='notifications.signal_handlers.create_system_messages') |
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def create_system_messages(app_config: AppConfig, **kwargs): |
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try: |
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notifications_module = import_module('.notifications', app_config.module.__package__) |
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for name, obj in notifications_module.__dict__.items(): |
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if name.startswith('_'): |
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continue |
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if not inspect.isclass(obj): |
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continue |
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if not issubclass(obj, SystemMessage): |
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continue |
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attrs = obj.__dict__ |
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if 'message_type_label' not in attrs: |
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continue |
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if 'category' not in attrs: |
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continue |
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if 'category_label' not in attrs: |
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continue |
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message_type = obj.get_message_type() |
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sub, created = SystemMsgSubscription.objects.get_or_create(message_type=message_type) |
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if not created: |
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return |
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try: |
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obj.post_insert_to_db(sub) |
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logger.info(f'Create MsgSubscription: package={app_config.module.__package__} type={message_type}') |
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except: |
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pass |
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except ModuleNotFoundError: |
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pass |
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@receiver(post_save, sender=User) |
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def on_user_post_save(sender, instance, created, **kwargs): |
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if not created: |
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return |
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receive_backends = [] |
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# Todo: IDE 识别不了 get_account |
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for backend in BACKEND: |
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if backend.get_account(instance): |
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receive_backends.append(backend) |
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UserMsgSubscription.objects.create(user=instance, receive_backends=receive_backends)
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