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# -*- coding: utf-8 -*-
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#
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from django.db.models.signals import (
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post_save, m2m_changed, pre_save, pre_delete, post_delete
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)
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from django.dispatch import receiver
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from common.exceptions import M2MReverseNotAllowed
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from common.const.signals import POST_ADD
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from common.utils import get_logger
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from common.decorator import on_transaction_commit
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from assets.models import Asset, SystemUser, Node, AuthBook
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from users.models import User
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from orgs.utils import tmp_to_root_org
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from assets.tasks import (
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push_system_user_to_assets_manual,
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push_system_user_to_assets,
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add_nodes_assets_to_system_users
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)
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logger = get_logger(__file__)
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@receiver(m2m_changed, sender=SystemUser.assets.through)
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@on_transaction_commit
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def on_system_user_assets_change(instance, action, model, pk_set, **kwargs):
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"""
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当系统用户和资产关系发生变化时，应该重新推送系统用户到新添加的资产中
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"""
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logger.debug("System user assets change signal recv: {}".format(instance))
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if not instance:
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logger.debug('No system user found')
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return
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if model == Asset:
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system_user_ids = [instance.id]
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asset_ids = pk_set
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else:
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system_user_ids = pk_set
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asset_ids = [instance.id]
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org_id = instance.org_id
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# 关联创建的 authbook 没有系统用户id
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with tmp_to_root_org():
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authbooks = AuthBook.objects.filter(
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asset_id__in=asset_ids,
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systemuser_id__in=system_user_ids
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)
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if action == POST_ADD:
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authbooks.update(org_id=org_id)
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save_action_mapper = {
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'pre_add': pre_save,
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'post_add': post_save,
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'pre_remove': pre_delete,
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'post_remove': post_delete
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}
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for ab in authbooks:
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ab.org_id = org_id
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save_action = save_action_mapper[action]
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logger.debug('Send AuthBook post save signal: {} -> {}'.format(action, ab.id))
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save_action.send(sender=AuthBook, instance=ab, created=True)
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if action == POST_ADD:
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for system_user_id in system_user_ids:
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push_system_user_to_assets.delay(system_user_id, asset_ids)
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@receiver(m2m_changed, sender=SystemUser.users.through)
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@on_transaction_commit
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def on_system_user_users_change(sender, instance: SystemUser, action, model, pk_set, reverse, **kwargs):
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"""
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当系统用户和用户关系发生变化时，应该重新推送系统用户资产中
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"""
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if action != POST_ADD:
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return
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if reverse:
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raise M2MReverseNotAllowed
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if not instance.username_same_with_user:
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return
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logger.debug("System user users change signal recv: {}".format(instance))
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usernames = model.objects.filter(pk__in=pk_set).values_list('username', flat=True)
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for username in usernames:
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push_system_user_to_assets_manual.delay(instance, username)
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@receiver(m2m_changed, sender=SystemUser.nodes.through)
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@on_transaction_commit
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def on_system_user_nodes_change(sender, instance=None, action=None, model=None, pk_set=None, **kwargs):
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"""
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当系统用户和节点关系发生变化时，应该将节点下资产关联到新的系统用户上
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"""
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if action != POST_ADD:
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return
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logger.info("System user nodes update signal recv: {}".format(instance))
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queryset = model.objects.filter(pk__in=pk_set)
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if model == Node:
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nodes_keys = queryset.values_list('key', flat=True)
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system_users = [instance]
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else:
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nodes_keys = [instance.key]
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system_users = queryset
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add_nodes_assets_to_system_users.delay(nodes_keys, system_users)
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@receiver(m2m_changed, sender=SystemUser.groups.through)
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def on_system_user_groups_change(instance, action, pk_set, reverse, **kwargs):
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"""
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当系统用户和用户组关系发生变化时，应该将组下用户关联到新的系统用户上
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"""
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if action != POST_ADD:
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return
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if reverse:
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raise M2MReverseNotAllowed
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logger.info("System user groups update signal recv: {}".format(instance))
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users = User.objects.filter(groups__id__in=pk_set).distinct()
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instance.users.add(*users)
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@receiver(post_save, sender=SystemUser, dispatch_uid="jms")
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@on_transaction_commit
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def on_system_user_update(instance: SystemUser, created, **kwargs):
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"""
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当系统用户更新时，可能更新了密钥，用户名等，这时要自动推送系统用户到资产上,
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其实应该当 用户名，密码，密钥 sudo等更新时再推送，这里偷个懒,
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这里直接取了 instance.assets 因为nodes和系统用户发生变化时，会自动将nodes下的资产
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关联到上面
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"""
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if instance and not created:
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logger.info("System user update signal recv: {}".format(instance))
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assets = instance.assets.all().valid()
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push_system_user_to_assets.delay(instance.id, [_asset.id for _asset in assets])
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