o
    Rc[                     @   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d
lmZ ddlmZ ddlmZ ddlmZ ddlmZ eddd Zeddd Zeddd Zeddd Ze
ddd Z
e	ddd Z	eddd ZdS )    N   )exc)inspect)text)warn_test_suite)	create_db)#drop_all_schema_objects_post_tables)"drop_all_schema_objects_pre_tables)drop_db)log)prepare_for_drop_tables) set_default_schema_on_connection)temp_table_keyword_args
postgresqlc                 C   s   | j j}|jdd V}|s|d }d}	 z|d||f  W n3 tjyT } z#|d7 }|dkr6 d	t|v rJt	
d
||j| td W Y d }~n	d }~w    nqW d    d S 1 sew   Y  d S )N
AUTOCOMMITZisolation_levelzselect current_database()r   TzCREATE DATABASE %s TEMPLATE %s   r   zaccessed by other userszFWaiting to create %s, URI %r, template DB %s is in use sleeping for .5g      ?)optionsZpostgresql_templatedbexecution_optionsbeginexec_driver_sqlZscalarr   ZOperationalErrorstrr   infourltimesleep)cfgengidentZtemplate_dbconnattempterr r"   JD:\Flask\env\Lib\site-packages\sqlalchemy/dialects/postgresql/provision.py_pg_create_db   sB   

"r$   c              	   C   s   |  jdd7}|  |tdt|d |d|  W d    n1 s*w   Y  W d    d S W d    d S 1 sBw   Y  d S )Nr   r   zselect pg_terminate_backend(pid) from pg_stat_activity where usename=current_user and pid != pg_backend_pid() and datname=:dname)dnamezDROP DATABASE %s)connectr   r   executer   dictr   )r   r   r   r   r"   r"   r#   _pg_drop_db5   s   
"r)   c                 C   s
   ddgiS )Nprefixes	TEMPORARYr"   )r   r   r"   r"   r#   #_postgresql_temp_table_keyword_argsD   s   
r,   c                 C   s4   |j }d|_ | }|d|  |  ||_ d S )NTzSET SESSION search_path='%s')Z
autocommitcursorr'   close)r   Zdbapi_connectionZschema_nameZexisting_autocommitr-   r"   r"   r#   ,_postgresql_set_default_schema_on_connectionI   s   
r/   c                 C   sX   |  jdd}|d D ]	}|d|  qW d    d S 1 s%w   Y  d S )Nr   r   z!select gid from pg_prepared_xactszROLLBACK PREPARED '%s')r&   r   r'   Zscalars)r   r   r   xidr"   r"   r#   r	   U   s
   "r	   c              
   C   st   ddl m} t|}| "}|dD ]}|||j|d |d d qW d    d S 1 s3w   Y  d S )Nr   )r   *nameschema)r2   r3   )Zsqlalchemy.dialectsr   r   r   Z	get_enumsr'   ZDropEnumTypeZENUM)r   r   r   Z	inspectorr   enumr"   r"   r#   r   \   s   
"r   c                 C   s:   | d}| }|rtdddd |D   dS dS )z;Ensure there are no locks on the current username/database.zselect pid, state, wait_event_type, query from pg_stat_activity where usename=current_user and datname=current_database() and state='idle in transaction' and pid != pg_backend_pid()zHPostgreSQL may not be able to DROP tables due to idle in transaction: %sz; c                 s   s    | ]}|j d  V  qdS )queryN)_mapping).0rowr"   r"   r#   	<genexpr>{   s    z*prepare_for_drop_tables.<locals>.<genexpr>N)r   allr   join)config
connectionresultrowsr"   r"   r#   r   j   s   r   )r    r   r   r   testingr   Ztesting.provisionr   r   r	   r
   r   r   r   r   Zfor_dbr$   r)   r,   r/   r"   r"   r"   r#   <module>   s6    
#

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
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