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To use one of the built-in backends, use 'django.db.backends.XXX', where XXX is one of: %sz, ) r � ImportError�django.db.backends�pkgutil� iter_modules�db�backends�__path__�map�repr�sortedr �join)� backend_name�e_user�django�builtin_backends� backend_reprsr r r � load_backendg s* � ��� ��rQ c s8 e Zd ZdZdZ� fdd�Zedd� �Zdd� Z� Z S ) �ConnectionHandler� DATABASESTc s t � �|�}|i krddi|t< nt|vr tdt� d���|t i kr)d|t d< |�� D ]\}|�dd� |�dd� |�dd� |d d ksK|d sOd|d< |�d d � |�d d� |�d i � |�dd � dD ]}|�|d� qi|�di �}g d�}|D ] \}}|�||� q~q-|S )N�ENGINEzdjango.db.backends.dummyzYou must define a 'z ' database.�ATOMIC_REQUESTSF� AUTOCOMMITTzdjango.db.backends.� CONN_MAX_AGEr �CONN_HEALTH_CHECKS�OPTIONS� TIME_ZONE)�NAME�USER�PASSWORD�HOST�PORT� �TEST))�CHARSETN)� COLLATIONN)�MIGRATET)�MIRRORN)r[ N)�super�configure_settings�DEFAULT_DB_ALIASr �values� setdefault)r � databases�conn�setting� test_settings�default_test_settings�key�value�� __class__r r rg � s6 � �z$ConnectionHandler.configure_settingsc C s | j S r" r r# r r r rk � s zConnectionHandler.databasesc C s" | j | }t|d �}|�||�S )NrT )r rQ �DatabaseWrapper)r �aliasrE �backendr r r �create_connection� s z#ConnectionHandler.create_connection) r r r � settings_name�thread_criticalrg �propertyrk rw � __classcell__r r rr r rR � s % rR c @ s\ e Zd Zddd�Zedd� �Zdd� Zed�Zed �Zd d � Z d d � Z dd� Z ddd�Z dS )�ConnectionRouterNc C r )zT If routers is not specified, default to settings.DATABASE_ROUTERS. N)�_routers)r �routersr r r r! � s zConnectionRouter.__init__c C sJ | j d u r tj| _ g }| j D ]}t|t�rt|�� }n|}|�|� q|S r" )r} r �DATABASE_ROUTERS� isinstance�strr �append)r r~ �r�routerr r r r~ � s zConnectionRouter.routersc s � fdd�}|S )Nc st d }| j D ]!}zt|� �}W n ty Y qw ||fi |��}|r&| S q|�d�}|d ur8|jjr8|jjS tS )N�instance)r~ r& �AttributeError�get�_staterE rh )r �model�hints� chosen_dbr� �methodr� ��actionr r � _route_db� s �� z0ConnectionRouter._router_func.<locals>._route_dbr )r� r� r r� r � _router_func� s z ConnectionRouter._router_func� db_for_read� db_for_writec K s\ | j D ]"}z|j}W n ty Y qw |||fi |��}|d ur%| S q|jj|jjkS r" )r~ �allow_relationr� r� rE )r �obj1�obj2r� r� r� �allowr r r r� � s ��z ConnectionRouter.allow_relationc K sP | j D ]"}z|j}W n ty Y qw |||fi |��}|d ur%| S qdS r% )r~ � allow_migrater� )r rE � app_labelr� r� r� r� r r r r� � s ��z ConnectionRouter.allow_migratec C s | j ||jj|jj|d�S )N)� model_namer� )r� �_metar� r� )r rE r� r r r �allow_migrate_model s �z$ConnectionRouter.allow_migrate_modelFc s |j |d�}� �fdd�|D �S )z8Return app models allowed to be migrated on provided db.)�include_auto_createdc s g | ] }�� � |�r|�qS r )r� )r; r� �rE r r r r? s z:ConnectionRouter.get_migratable_models.<locals>.<listcomp>)� get_models)r � app_configrE r� �modelsr r� r �get_migratable_models s z&ConnectionRouter.get_migratable_modelsr" )F) r r r r! r r~ r� r� r� r� r� r� r� r r r r r| � s r| ) rC � importlibr � django.confr �django.core.exceptionsr �django.utils.connectionr r �django.utils.functionalr �django.utils.module_loadingr rh �DJANGO_VERSION_PICKLE_KEY� Exceptionr r r r r r r r r r rQ rR r| r r r r �<module> s. 2#;
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