U
    h                     @  s  d 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 ddlmZ ddlmZ ddlmZ ddlmZ e	r*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! G dd deZ"G dd de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'e'Z(d(S ))a  
.. dialect:: mysql+asyncmy
    :name: asyncmy
    :dbapi: asyncmy
    :connectstring: mysql+asyncmy://user:password@host:port/dbname[?key=value&key=value...]
    :url: https://github.com/long2ice/asyncmy

Using a special asyncio mediation layer, the asyncmy dialect is usable
as the backend for the :ref:`SQLAlchemy asyncio <asyncio_toplevel>`
extension package.

This dialect should normally be used only with the
:func:`_asyncio.create_async_engine` engine creation function::

    from sqlalchemy.ext.asyncio import create_async_engine

    engine = create_async_engine(
        "mysql+asyncmy://user:pass@hostname/dbname?charset=utf8mb4"
    )

    )annotations)
ModuleType)Any)NoReturn)Optional)TYPE_CHECKING)Union   )MySQLDialect_pymysql   )pool)util)AsyncAdapt_dbapi_connection)AsyncAdapt_dbapi_cursor)AsyncAdapt_dbapi_module)AsyncAdapt_dbapi_ss_cursor)await_fallback)
await_only)AsyncIODBAPIConnection)AsyncIODBAPICursor)ConnectArgsType)DBAPIConnection)DBAPICursor)DBAPIModule)PoolProxiedConnection)URLc                   @  s   e Zd ZdZdS )AsyncAdapt_asyncmy_cursor N)__name__
__module____qualname__	__slots__r   r   r   E/tmp/pip-unpacked-wheel-y9ln43lq/sqlalchemy/dialects/mysql/asyncmy.pyr   ;   s   r   c                   @  s    e Zd ZdZdddddZdS )AsyncAdapt_asyncmy_ss_cursorr   r   r   
connectionreturnc                 C  s   | | jjjjjS N)cursorZ_adapt_connectiondbapiasyncmyZcursorsZSSCursorselfr%   r   r   r"   _make_new_cursorD   s    z-AsyncAdapt_asyncmy_ss_cursor._make_new_cursorN)r   r   r    r!   r-   r   r   r   r"   r#   ?   s   r#   c                   @  s   e Zd ZdZeZeZdddddZddd	d
dZ	ddddZ
ddddZdddddZddddZddddZddddZdS )AsyncAdapt_asyncmy_connectionr   	Exceptionr   )errorr&   c                 C  s   t |tr| jd|d S )Nz7network operation failed due to asyncmy attribute error)
isinstanceAttributeErrorr)   InternalErrorr,   r0   r   r   r"   _handle_exceptionR   s
    
z/AsyncAdapt_asyncmy_connection._handle_exceptionboolNone)	reconnectr&   c                 C  s   |rt | |  S r'   )AssertionErrorawait__do_ping)r,   r8   r   r   r"   pingZ   s    z"AsyncAdapt_asyncmy_connection.pingr&   c              
     sh   z6| j 4 I d H  | jdI d H  W 5 Q I d H R X W n, tk
rb } z| | W 5 d }~X Y nX d S )NF)Z_execute_mutex_connectionr<   r/   r5   r4   r   r   r"   r;   ^   s
    &z&AsyncAdapt_asyncmy_connection._do_pingzOptional[str]c                 C  s
   | j  S r'   )r>   character_set_namer,   r   r   r"   r?   e   s    z0AsyncAdapt_asyncmy_connection.character_set_namer   )valuer&   c                 C  s   |  | j| d S r'   )r:   r>   
autocommit)r,   rA   r   r   r"   rB   h   s    z(AsyncAdapt_asyncmy_connection.autocommitc                 C  s
   | j  S r'   )r>   get_autocommitr@   r   r   r"   rC   k   s    z,AsyncAdapt_asyncmy_connection.get_autocommitc                 C  s   | j   d S r'   )r>   closer@   r   r   r"   	terminaten   s    z'AsyncAdapt_asyncmy_connection.terminatec                 C  s   |  | j  d S r'   )r:   r>   Zensure_closedr@   r   r   r"   rD   r   s    z#AsyncAdapt_asyncmy_connection.closeN)r   r   r    r!   r   Z_cursor_clsr#   Z_ss_cursor_clsr5   r<   r;   r?   rB   rC   rE   rD   r   r   r   r"   r.   L   s   r.   c                   @  s   e Zd ZdZeeZdS )%AsyncAdaptFallback_asyncmy_connectionr   N)r   r   r    r!   staticmethodr   r:   r   r   r   r"   rF   v   s   rF   c                   @  st   e Zd ZddddZddddZed	Zed
ZedZ	edZ
edZeeZddddddZdS )AsyncAdapt_asyncmy_dbapir   )r*   c                 C  s   || _ d| _|   d S )Nformat)r*   Z
paramstyle_init_dbapi_attributes)r,   r*   r   r   r"   __init__}   s    z!AsyncAdapt_asyncmy_dbapi.__init__r7   r=   c                 C  s$   dD ]}t | |t| jj| qd S )N)WarningErrorInterfaceErrorZ	DataErrorZDatabaseErrorZOperationalErrorrN   ZIntegrityErrorZProgrammingErrorr3   ZNotSupportedError)setattrgetattrr*   errors)r,   namer   r   r"   rJ      s    z/AsyncAdapt_asyncmy_dbapi._init_dbapi_attributesSTRINGNUMBERBINARYDATETIME	TIMESTAMPr   r.   )argkwr&   c                 O  sR   | dd}| d| jj}t|r:t| t|||S t| t|||S d S )Nasync_fallbackFZasync_creator_fn)	popr*   connectr   asboolrF   r   r.   r   )r,   rX   rY   rZ   Z
creator_fnr   r   r"   r\      s    
z AsyncAdapt_asyncmy_dbapi.connectN)r   r   r    rK   rJ   r   symbolrS   rT   rU   rV   rW   rG   bytesBinaryr\   r   r   r   r"   rH   |   s   




rH   c                      s   e Zd ZdZdZdZeZdZdZ	e
ddddZe
ddd	d
dZdddddZddd	 fddZddddd fddZddddZdddd d!Z  ZS )"MySQLDialect_asyncmyr*   Tr   r=   c                 C  s   t tdS )Nr*   )rH   
__import__)clsr   r   r"   import_dbapi   s    z!MySQLDialect_asyncmy.import_dbapir   type)urlr&   c                 C  s(   |j dd}t|rtjS tjS d S )NrZ   F)querygetr   r]   r   ZFallbackAsyncAdaptedQueuePoolZAsyncAdaptedQueuePool)rc   rf   rZ   r   r   r"   get_pool_class   s    
z#MySQLDialect_asyncmy.get_pool_classr   r7   )dbapi_connectionr&   c                 C  s   |   d S r'   )rE   )r,   rj   r   r   r"   do_terminate   s    z!MySQLDialect_asyncmy.do_terminater   c                   s   t  j|tddddS )Nuserdb)usernameZdatabase)Z_translate_args)supercreate_connect_argsdict)r,   rf   	__class__r   r"   rp      s     
z(MySQLDialect_asyncmy.create_connect_argszDBAPIModule.Errorz7Optional[Union[PoolProxiedConnection, DBAPIConnection]]zOptional[DBAPICursor]r6   )er%   r(   r&   c                   s4   t  |||rdS t| }d|kp.d|kS d S )NTznot connectedznetwork operation failed)ro   is_disconnectstrlower)r,   rt   r%   r(   Zstr_err   r   r"   ru      s
    z"MySQLDialect_asyncmy.is_disconnectintc                 C  s   ddl m} |jS )Nr   )CLIENT)Zasyncmy.constantsry   Z
FOUND_ROWS)r,   ry   r   r   r"   _found_rows_client_flag   s    z,MySQLDialect_asyncmy._found_rows_client_flagr   r$   c                 C  s   |j S r'   )r>   r+   r   r   r"   get_driver_connection   s    z*MySQLDialect_asyncmy.get_driver_connection)r   r   r    ZdriverZsupports_statement_cacheZsupports_server_side_cursorsr#   Z	_sscursorZis_asyncZhas_terminateclassmethodrd   ri   rk   rp   ru   rz   r{   __classcell__r   r   rr   r"   ra      s   ra   N))__doc__
__future__r   typesr   typingr   r   r   r   r   Zpymysqlr
    r   r   Zconnectors.asyncior   r   r   r   Zutil.concurrencyr   r   r   r   Zengine.interfacesr   r   r   r   r   Z
engine.urlr   r   r#   r.   rF   rH   ra   dialectr   r   r   r"   <module>   sF   
 *-8