o
    #.h?$                     @   s,  d dl Z d dlmZ d dlmZ d dlmZ d dlmZ d dlm	Z	 d dl
mZ d dlmZ d	Zd
ZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd dZdd  ZG d!d" d"e	ZG d#d$ d$ZdS )%    N)import_modulesettings)ImproperlyConfigured)ConnectionDoesNotExist)BaseConnectionHandler)cached_property)import_stringdefault_django_versionc                   @      e Zd ZdS )ErrorN__name__
__module____qualname__ r   r   N/var/www/supernova/superenvnew/lib/python3.10/site-packages/django/db/utils.pyr          r   c                   @   r   )InterfaceErrorNr   r   r   r   r   r      r   r   c                   @   r   )DatabaseErrorNr   r   r   r   r   r      r   r   c                   @   r   )	DataErrorNr   r   r   r   r   r      r   r   c                   @   r   )OperationalErrorNr   r   r   r   r   r   !   r   r   c                   @   r   )IntegrityErrorNr   r   r   r   r   r   %   r   r   c                   @   r   )InternalErrorNr   r   r   r   r   r   )   r   r   c                   @   r   )ProgrammingErrorNr   r   r   r   r   r   -   r   r   c                   @   r   )NotSupportedErrorNr   r   r   r   r   r   1   r   r   c                   @   s0   e Zd ZdZdd Zdd Zdd Zdd	 Zd
S )DatabaseErrorWrapperz~
    Context manager and decorator that reraises backend-specific database
    exceptions using Django's common wrappers.
    c                 C   
   || _ dS )zx
        wrapper is a database wrapper.

        It must have a Database attribute defining PEP-249 exceptions.
        N)wrapper)selfr   r   r   r   __init__;   s   
zDatabaseErrorWrapper.__init__c                 C   s   d S Nr   r    r   r   r   	__enter__C   s   zDatabaseErrorWrapper.__enter__c              	   C   sp   |d u rd S t ttttttttf	D ]$}t	| j
j|j}t||r5||j }|t tfvr/d| j
_|||qd S NT)r   r   r   r   r   r   r   r   r   getattrr   Databaser   
issubclassargserrors_occurredwith_traceback)r    exc_type	exc_value	tracebackdj_exc_typedb_exc_typedj_exc_valuer   r   r   __exit__F   s(   

zDatabaseErrorWrapper.__exit__c                    s    fdd}|S )Nc                     s6     | i |W  d    S 1 sw   Y  d S r"   r   )r)   kwargsfuncr    r   r   inner`   s   $z,DatabaseErrorWrapper.__call__.<locals>.innerr   )r    r5   r6   r   r4   r   __call__]   s   zDatabaseErrorWrapper.__call__N)r   r   r   __doc__r!   r$   r2   r7   r   r   r   r   r   5   s    r   c              
   C   s   | dkrd} zt d|  W S  tyG } z.ddl}dd t|jjjD }| dd |D vrBtt	t
|}td	| d
|f | d}~ww )z
    Return a database backend's "base" module given a fully qualified database
    backend name, or raise an error if it doesn't exist.
    z&django.db.backends.postgresql_psycopg2zdjango.db.backends.postgresqlz%s.baser   Nc                 S   s"   g | ]\}}}|r|d vr|qS )>   basedummyr   ).0_nameispkgr   r   r   
<listcomp>w   s    z load_backend.<locals>.<listcomp>c                 S   s   g | ]}d | qS )zdjango.db.backends.%sr   )r;   br   r   r   r?   |   s    z%r isn't an available database backend or couldn't be imported. Check the above exception. 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 Zd ZdZdZ fddZedd Zdd Z  Z	S )	ConnectionHandler	DATABASESTc                    s  t  |}|i krddi|t< nt|vrtdt d|t i kr)d|t d< | D ]\}|dd |dd |dd |d d	ksK|d sOd|d< |d
d |dd |di  |dd  dD ]}||d qi|di }g d}|D ]
\}}||| q~q-|S )NENGINEzdjango.db.backends.dummyzYou must define a 'z' database.ATOMIC_REQUESTSF
AUTOCOMMITTzdjango.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   zConnectionHandler.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 Zd ZdddZedd Zdd ZedZed	Zd
d Z	dd Z
dd ZdddZdS )ConnectionRouterNc                 C   r   )zT
        If routers is not specified, default to settings.DATABASE_ROUTERS.
        N)_routers)r    routersr   r   r   r!      s   
zConnectionRouter.__init__c                 C   sJ   | j d u r	tj| _ g }| j D ]}t|trt| }n|}|| q|S r"   )r}   r   DATABASE_ROUTERS
isinstancestrr	   append)r    r~   rrouterr   r   r   r~      s   


zConnectionRouter.routersc                    s    fdd}|S )Nc              	      st   d }| j D ]!}zt| }W n	 ty   Y qw ||fi |}|r&|  S q|d}|d ur8|jjr8|jjS tS )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	 ty   Y qw |||fi |}|d ur%|  S q|jj|jjkS 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	 ty   Y qw |||fi |}|d ur%|  S qdS r%   )r~   allow_migrater   )r    rE   	app_labelr   r   r   r   r   r   r   r      s   

zConnectionRouter.allow_migratec                 C   s   | j ||jj|jj|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} fdd|D S )z8Return app models allowed to be migrated on provided db.)include_auto_createdc                    s   g | ]
}  |r|qS 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#;