U
    ‰d«  ã                   @   s`   d dl Z d dlZd dlZd dlZd dlZd dlmZ d dlmZ d dl	m
Z
 G dd„ de
ƒZdS )é    N)ÚPath)ÚNotSupportedError)ÚBaseDatabaseCreationc                   @   sT   e Zd Zedd„ ƒZdd„ Zddd„Zdd	„ Zdd
d„Zdd„ Z	dd„ Z
dd„ ZdS )ÚDatabaseCreationc                 C   s   t | tƒ o| dkpd| kS )Nú:memory:zmode=memory)Ú
isinstancer   )Zdatabase_name© r   úG/tmp/pip-unpacked-wheel-7vj2equ7/django/db/backends/sqlite3/creation.pyÚis_in_memory_db   s    ÿz DatabaseCreation.is_in_memory_dbc                 C   s,   | j jd d pd}|dkr(d| j j S |S )NZTESTÚNAMEr   z)file:memorydb_%s?mode=memory&cache=shared)Ú
connectionÚsettings_dictÚalias)ÚselfÚtest_database_namer   r   r	   Ú_get_test_db_name   s    z"DatabaseCreation._get_test_db_nameFc              
   C   sÈ   |   ¡ }|r|S |  |¡sÄ|dkr:|  d|  ||¡f ¡ t |tj¡rÄ|sXtd| ƒ}|sd|dkr°zt |¡ W qÄ t	k
r¬ } z|  d| ¡ t
 d¡ W 5 d }~X Y qÄX n|  d¡ t
 d¡ |S )Né   ú,Destroying old test database for alias %s...zXType 'yes' if you would like to try deleting the test database '%s', or 'no' to cancel: Úyesú/Got an error deleting the old test database: %sé   zTests cancelled.)r   r
   ÚlogÚ_get_database_display_strÚosÚaccessÚF_OKÚinputÚremoveÚ	ExceptionÚsysÚexit)r   Ú	verbosityZautoclobberÚkeepdbr   ZconfirmÚer   r   r	   Ú_create_test_db   s4    
ÿÿÿÿ

z DatabaseCreation._create_test_dbc                 C   s   | j j}|d }|  |¡sDtj |¡\}}|d|› d|› |› i–S t ¡ }|dkrX|S |dkr||d| j j› d|› di–S t	d|›dƒ‚d S )Nr   Ú_ÚforkÚspawnú.sqlite3zCloning with start method z is not supported.)
r   r   r
   r   ÚpathÚsplitextÚmultiprocessingÚget_start_methodr   r   )r   ÚsuffixZorig_settings_dictÚsource_database_nameÚrootÚextÚstart_methodr   r   r	   Úget_test_db_clone_settings6   s     
 þ
ÿz+DatabaseCreation.get_test_db_clone_settingsc              
   C   s(  | j jd }|  |¡d }|  |¡sòt |tj¡r¤|r:d S |dkrZ|  d|  ||¡f ¡ zt 	|¡ W n: t
k
r¢ } z|  d| ¡ t d¡ W 5 d }~X Y nX zt ||¡ W n: t
k
rî } z|  d| ¡ t d¡ W 5 d }~X Y nX n2t ¡ dkr$tj|dd	}| j j  |¡ | ¡  d S )
Nr   r   r   r   r   z*Got an error cloning the test database: %sr'   T©Úuri)r   r   r2   r
   r   r   r   r   r   r   r   r   r    ÚshutilÚcopyr+   r,   Úsqlite3ÚconnectÚbackupÚclose)r   r-   r!   r"   r.   Ztarget_database_namer#   Z	ondisk_dbr   r   r	   Ú_clone_test_dbJ   s<    
 ÿÿÿÿzDatabaseCreation._clone_test_dbc                 C   s   |r|   |¡st |¡ d S )N)r
   r   r   )r   r   r!   r   r   r	   Ú_destroy_test_dbm   s    z!DatabaseCreation._destroy_test_dbc                 C   sB   |   ¡ }| jjd g}|  |¡r0| | jj¡ n
| |¡ t|ƒS )a   
        Return a tuple that uniquely identifies a test database.

        This takes into account the special cases of ":memory:" and "" for
        SQLite since the databases will be distinct despite having the same
        TEST NAME. See https://www.sqlite.org/inmemorydb.html
        r   )r   r   r   r
   Úappendr   Útuple)r   r   Úsigr   r   r	   Útest_db_signaturer   s    

z"DatabaseCreation.test_db_signaturec                 C   sÞ   |   |¡}t ¡ }|dkr4| jj |¡ | j ¡  n¦|dkrÚ| jj}d|› d|› d}| jjj	d|› d|› ddd	}t
j	|dd	}| |¡ | ¡  | jj |¡ || jjd
< | j 	¡  | ¡  tj d¡dkrÚ|  ¡  d S )Nr&   r'   zfile:memorydb_r%   z?mode=memory&cache=sharedzfile:r(   Tr3   r   ZRUNNING_DJANGOS_TEST_SUITEÚtrue)r2   r+   r,   r   r   Úupdater:   r   ZDatabaser8   r7   r9   r   ÚenvironÚgetZ mark_expected_failures_and_skips)r   Z
_worker_idr   r1   r   Zconnection_strZ	source_dbZ	target_dbr   r   r	   Úsetup_worker_connection‚   s,    
ÿ ÿ

z(DatabaseCreation.setup_worker_connectionN)F)F)Ú__name__Ú
__module__Ú__qualname__Ústaticmethodr
   r   r$   r2   r;   r<   r@   rE   r   r   r   r	   r      s   


#r   )r+   r   r5   r7   r   Úpathlibr   Z	django.dbr   Z django.db.backends.base.creationr   r   r   r   r   r	   Ú<module>   s   