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# -*- coding: utf-8 -*-
#
from .base import BaseBackend
from .external.utils import get_backend
from .internal.asset_user import AssetUserBackend
class AssetUserManager(BaseBackend):
"""
资产用户管理器
"""
external_backend = get_backend()
internal_backend = AssetUserBackend
@classmethod
def filter(cls, username=None, asset=None, **kwargs):
external_instance = list(cls.external_backend.filter(username, asset))
internal_instance = list(cls.internal_backend.filter(username, asset))
instances = cls._merge_instances(external_instance, internal_instance)
return instances
@classmethod
def create(cls, **kwargs):
instance = cls.external_backend.create(**kwargs)
return instance
@classmethod
def _merge_instances(cls, external_instances, internal_instances):
external_instances_keyword_list = [
{'username': instance.username, 'asset': instance.asset}
for instance in external_instances
]
instances = [
instance for instance in internal_instances
if instance.keyword not in external_instances_keyword_list
]
external_instances.extend(instances)
return external_instances