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a ��Jhb � @ s� U d Z ddlmZ ddlZddlZddlZddlZddlmZ ddl m Z m Z m Z m Z mZmZmZmZ ddlmZ zddlZddlZW n ey� dZY n0 dZzd d lmZ W n ey� dZY n0 d d lm Z d d l m Z m Z d d l m!Z!m"Z"m#Z#m$Z$m%Z% d dl&m'Z' e �r d dl(m)Z) e�*� Z+dZ,dZ-e�.d�Z/dZ0edu �rLe ne efZ1de2d< i Z3de2d< ddd�dd �Z4dd d�d d �Z5ddd d �d!d"�Z6dd#d�d$d%�Z7G d&d� d�Z8G d'd(� d(�Z9dS ))z5Implementing pooling of connections to MySQL servers.� )� annotationsN)� TracebackType)� TYPE_CHECKING�Any�Dict�NoReturn�Optional�Tuple�Type�Union)�uuid4FT� )�CMySQLConnection)�MySQLConnection)� CNX_POOL_ARGS�DEFAULT_CONFIGURATION)�Error�InterfaceError�NotSupportedError� PoolError�ProgrammingError)�read_option_files)�MySQLConnectionAbstract� �@ z[^a-zA-Z0-9._:\-*$#]z0MySQL Connector/Python C Extension not availablez Union[type, Tuple[type, ...]]�MYSQL_CNX_CLASSz Dict[str, MySQLConnectionPool]�_CONNECTION_POOLSr �PooledMySQLConnection��kwargs�returnc K s� d| v r| d n t f i | ��}| �d�du r<tdu r<tt��t�` |tvr^tf i | ��t|< n4tt| t�r�t| j }d| v r�| d |kr�t d��W d � n1 s�0 Y zt| � � W S t y� t d|� d��d�Y n0 dS ) z!Return a pooled MySQL connection.� pool_name�use_pureFN� pool_sizez)Size can not be changed for active pools.z%Failed getting connection from pool '�')�generate_pool_name�getr � ImportError� ERROR_NO_CEXT�CONNECTION_POOL_LOCKr �MySQLConnectionPool� isinstancer# r �get_connection�AttributeErrorr )r r! Z check_size� r. �L/home/agenciai/.local/lib/python3.9/site-packages/mysql/connector/pooling.py�_get_pooled_connectionP s& � & ��r0 z5Union[PooledMySQLConnection, MySQLConnectionAbstract]c K s. | � � }z |d }W n ty0 td�d�Y n0 |d= tg d��}d}|D ]�}t|�� �| }|r�t|�dkrtdnd}d �|�}td |� d |� ���t|d �r�|d7 }|�d d �|d < |d dk s�|d d kr�t d|d � ���t |d t �sLt d|d � ���qLd| k �r t|�k �r,n nt d��i } g } t |dd� dd�D ]D}|d | v�rv|g| |d < | �|d � n| |d �|� �qF| D ]�} | | } tt| ��D ]t} t| �d }t�d|�}| �|�}|� � }|�|� |�d d� ztf i |��W S t�y Y n0 �q��q�t d��dS )a� Return a MySQL connection and try to failover if needed. An InterfaceError is raise when no MySQL is available. ValueError is raised when the failover server configuration contains an illegal connection argument. Supported arguments are user, password, host, port, unix_socket and database. ValueError is also raised when the failover argument was not provided. Returns MySQLConnection instance. �failoverz failover argument not providedN) �user�password�host�port� unix_socket�databaser! r# �priorityr r �s� z, z Unsupported connection argument z in failover: r8 �d z9Priority value should be in the range of 0 to 100, got : zDPriority value should be an integer in the range of 0 to 100, got : z\You must either assign no priority to any of the routers or give a priority for every routerc S s | d S )Nr8 r. ��xr. r. r/ �<lambda>� � z*_get_failover_connection.<locals>.<lambda>T)�key�reversez,Unable to connect to any of the target hosts)�copy�KeyError� ValueError�set�keys�len�join�hasattrr& r r+ �intr �sorted�append�range�random�randint�pop�update�connectr )r �configr1 Zsupport_cnx_argsZpriority_count�server�diff�arg�lstZserver_directoryZserver_priority_listr8 Z failover_list�_�last�index� new_configr. r. r/ �_get_failover_connectionm st � � ���� � r\ )�argsr r c s d� v r� � d�nd}t|t�s(td��|�rts:td��d� v rJtd��d� v rZtd��d � v rjtd ��d � vr~td � d < ztj�� d d �}W n, tj j y� td � d � d��d�Y n0 g }|D ](}|� |j j dd�|j|j|jd�� q�|jdd� d� dd� |D �� d < d� v �r6� d � d< � � d� d� v �r\tf i � ��}tf i |��S d � v �rttf i � ��S z,t� fdd�tD ���r�tf i � ��W S W n t�y� Y n0 � �d d�}d � v �r� d = |�s�tdu �r�tt ��t�r|�st| i � ��S t | i � ��S ) a� Creates or gets a MySQL connection object. In its simpliest form, `connect()` will open a connection to a MySQL server and return a `MySQLConnectionAbstract` subclass object such as `MySQLConnection` or `CMySQLConnection`. When any connection pooling arguments are given, for example `pool_name` or `pool_size`, a pool is created or a previously one is used to return a `PooledMySQLConnection`. Args: *args: N/A. **kwargs: For a complete list of possible arguments, see [1]. If no arguments are given, it uses the already configured or default values. Returns: A `MySQLConnectionAbstract` subclass instance (such as `MySQLConnection` or `CMySQLConnection`) or a `PooledMySQLConnection` instance. Examples: A connection with the MySQL server can be established using either the `mysql.connector.connect()` method or a `MySQLConnectionAbstract` subclass: ``` >>> from mysql.connector import MySQLConnection, HAVE_CEXT >>> >>> cnx1 = mysql.connector.connect(user='joe', database='test') >>> cnx2 = MySQLConnection(user='joe', database='test') >>> >>> cnx3 = None >>> if HAVE_CEXT: >>> from mysql.connector import CMySQLConnection >>> cnx3 = CMySQLConnection(user='joe', database='test') ``` References: [1]: https://dev.mysql.com/doc/connector-python/en/connector-python-connectargs.html �dns_srvFz(The value of 'dns-srv' must be a booleanztMySQL host configuration requested DNS SRV. This requires the Python dnspython module. Please refer to documentationr6 z<Using Unix domain sockets with DNS SRV lookup is not allowedr5 z;Specifying a port number with DNS SRV lookup is not allowedr1 zASpecifying multiple hostnames with DNS SRV look up is not allowedr4 ZSRVz Unable to locate any hosts for 'r$ NT)Zomit_final_dot)r4 r5 r8 �weightc S s | d | d fS )Nr8 r_ r. r< r. r. r/ r> r? zconnect.<locals>.<lambda>)r@ c S s g | ]}|d |d d��qS )r4 r5 )r4 r5 r. )�.0�srvr. r. r/ � <listcomp>! s zconnect.<locals>.<listcomp>Zread_default_fileZ option_filesc 3 s | ]}|� v V qd S �Nr. )r` r@ �r r. r/ � <genexpr>4 r? zconnect.<locals>.<genexpr>r" ) rP r+ �boolr �HAVE_DNSPYTHONr �dns�resolver�query� exceptionZ DNSExceptionrL �targetZto_textr5 r8 r_ �sortr rR r\ �anyr r0 � NameErrorr& r r' r( r )r] r r^ Z srv_recordsr1 ra r[ r" r. rd r/ rR � s� ) ���� �� �� � rR �strc K sN g }dD ].}z|� t| | �� W q ty4 Y q0 q|sDtd��d�|�S )z�Generate a pool name This function takes keyword arguments, usually the connection arguments for MySQLConnection, and tries to generate a name for a pool. Raises PoolError when no name can be generated. Returns a string. )r4 r5 r2 r7 z.Failed generating pool name; specify pool_namerX )rL rp rC r rH )r �partsr@ r. r. r/ r% F s r% c @ s� e Zd ZdZdddd�dd�Zd d�d d �Zd d d dd�dd�Zddd�dd�Zdd�dd�Ze ddd�dd��Z e dd�d d ��Z d S ) r a� Class holding a MySQL Connection in a pool PooledMySQLConnection is used by MySQLConnectionPool to return an instance holding a MySQL connection. It works like a MySQLConnection except for methods like close() and config(). The close()-method will add the connection back to the pool rather than disconnecting from the MySQL server. Configuring the connection have to be done through the MySQLConnectionPool method set_config(). Using config() on pooled connection will raise a PoolError. Attributes: pool_name (str): Returns the name of the connection pool to which the connection belongs. r* r �None)�pool�cnxr c C s4 t |t�std��t |t�s$td��|| _|| _dS )z�Constructor. Args: pool: A `MySQLConnectionPool` instance. cnx: A `MySQLConnectionAbstract` subclass instance. z$pool should be a MySQLConnectionPoolz cnx should be a MySQLConnectionN)r+ r* r- r � _cnx_pool�_cnx)�selfrs rt r. r. r/ �__init__q s z PooledMySQLConnection.__init__�r c C s | S rc r. �rw r. r. r/ � __enter__ s z PooledMySQLConnection.__enter__zType[BaseException]� BaseExceptionr )�exc_type� exc_value� tracebackr c C s | � � d S rc )�close)rw r} r~ r r. r. r/ �__exit__� s z PooledMySQLConnection.__exit__r )�attrr c C s t | j|�S )z0Calls attributes of the MySQLConnection instance)�getattrrv )rw r� r. r. r/ � __getattr__� s z!PooledMySQLConnection.__getattr__c C sF z,| j }| jjr|�� W | j�|� d| _ n| j�|� d| _ 0 dS )a� Do not close, but adds connection back to pool. For a pooled connection, close() does not actually close it but returns it to the pool and makes it available for subsequent connection requests. If the pool configuration parameters are changed, a returned connection is closed and reopened with the new configuration before being returned from the pool again in response to a connection request. N)rv ru � reset_session�add_connection�rw rt r. r. r/ r� � s � zPooledMySQLConnection.closer r c K s t d��dS )z�Configuration is done through the pool. For pooled connections, the `config()` method raises a `PoolError` exception. Configuration for pooled connections should be done using the pool object. zKConfiguration for pooled connections should be done through the pool itselfN)r rd r. r. r/ rS � s �z PooledMySQLConnection.configrp c C s | j jS )zHReturns the name of the connection pool to which the connection belongs.)ru r! rz r. r. r/ r! � s z PooledMySQLConnection.pool_nameN) �__name__� __module__� __qualname__�__doc__rx r{ r� r� r� � staticmethodrS �propertyr! r. r. r. r/ r ^ s c @ s� e Zd ZdZd*ddddd d �d d �Zed d�dd��Zedd�dd��Zedd�dd��Zdd d�dd�Z dd d�dd�Z d d d�d d �Z d d d �d d!�Z d+d"d d �d#d$�Z d%d�d&d'�Zdd�d(d)�ZdS ),r* z*Class defining a pool of MySQL connections� NTrJ z Optional[str]rf r rr )r# r! �pool_reset_sessionr r c K s� d| _ d| _|| _| �|� | �|p0tf i |��� i | _t�| j �| _ t � | _ |r�| j f i |�� d}|| j k r�| � � |d7 }qhdS )a� Constructor. Initialize a MySQL connection pool with a maximum number of connections set to `pool_size`. The rest of the keywords arguments, kwargs, are configuration arguments for MySQLConnection instances. Args: pool_name: The pool name. If this argument is not given, Connector/Python automatically generates the name, composed from whichever of the host, port, user, and database connection arguments are given in kwargs, in that order. pool_size: The pool size. If this argument is not given, the default is 5. pool_reset_session: Whether to reset session variables when the connection is returned to the pool. **kwargs: Optional additional connection arguments, as described in [1]. Examples: ``` >>> dbconfig = { >>> "database": "test", >>> "user": "joe", >>> } >>> cnxpool = mysql.connector.pooling.MySQLConnectionPool(pool_name = "mypool", >>> pool_size = 3, >>> **dbconfig) ``` References: [1]: https://dev.mysql.com/doc/connector-python/en/connector-python-connectargs.html Nr r )� _pool_size� _pool_name�_reset_session�_set_pool_size�_set_pool_namer% � _cnx_config�queue�Queue� _cnx_queuer �_config_version� set_configr� )rw r# r! r� r �cntr. r. r/ rx � s & � z MySQLConnectionPool.__init__rp ry c C s | j S )z(Returns the name of the connection pool.)r� rz r. r. r/ r! � s z MySQLConnectionPool.pool_namec C s | j S )z2Returns number of connections managed by the pool.)r� rz r. r. r/ r# � s z MySQLConnectionPool.pool_sizec C s | j S )z!Returns whether to reset session.)r� rz r. r. r/ r� � s z!MySQLConnectionPool.reset_sessionr c K s� |sdS t �n z(t� }|jf i |�� || _t� | _W n4 tyj } z td|� ��|�W Y d}~n d}~0 0 W d � n1 s�0 Y dS )a� Set the connection configuration for `MySQLConnectionAbstract` subclass instances. This method sets the configuration used for creating `MySQLConnectionAbstract` subclass instances such as `MySQLConnection`. See [1] for valid connection arguments. Args: **kwargs: Connection arguments - for a complete list of possible arguments, see [1]. Raises: PoolError: When a connection argument is not valid, missing or not supported by `MySQLConnectionAbstract`. References: [1]: https://dev.mysql.com/doc/connector-python/en/connector-python-connectargs.html Nz$Connection configuration not valid: )r) rR rS r� r r� r- r )rw r Ztest_cnx�errr. r. r/ r� � s z MySQLConnectionPool.set_config)r# r c C s( |dks|t kr tdt � ���|| _dS )a Set the size of the pool This method sets the size of the pool but it will not resize the pool. Raises an AttributeError when the pool_size is not valid. Invalid size is 0, negative or higher than pooling.CNX_POOL_MAXSIZE. r z8Pool size should be higher than 0 and lower or equal to N)�CNX_POOL_MAXSIZEr- r� )rw r# r. r. r/ r� s ��z"MySQLConnectionPool._set_pool_size)r! r c C s@ t �|�rtd|� d���t|�tkr6td|� d���|| _dS )a Set the name of the pool. This method checks the validity and sets the name of the pool. Raises an AttributeError when pool_name contains illegal characters ([^a-zA-Z0-9._\-*$#]) or is longer than pooling.CNX_POOL_MAXNAMESIZE. z Pool name 'z ' contains illegal charactersz ' is too longN)�CNX_POOL_NAMEREGEX�searchr- rG �CNX_POOL_MAXNAMESIZEr� )rw r! r. r. r/ r� ) s z"MySQLConnectionPool._set_pool_namer )rt r c C s\ t |t�std��z| jj|dd� W n0 tjyV } ztd�|�W Y d}~n d}~0 0 dS )z�Put connection back in the queue This method is putting a connection back in the queue. It will not acquire a lock as the methods using _queue_connection() will have it set. Raises `PoolError` on errors. �;Connection instance not subclass of MySQLConnectionAbstractF��block�'Failed adding connection; queue is fullN)r+ r r r� �putr� �Full�rw rt r� r. r. r/ �_queue_connection7 s �z%MySQLConnectionPool._queue_connectionz!Optional[MySQLConnectionAbstract]c C s� t �� | jstd��| j�� r&td��|s~tf i | j��}z&| jr^| jd r^|jdk r^td��W n t yr Y n0 | j |_ nt |t �s�td��| �|� W d � n1 s�0 Y dS )a� Adds a connection to the pool. This method instantiates a `MySQLConnection` using the configuration passed when initializing the `MySQLConnectionPool` instance or using the `set_config()` method. If cnx is a `MySQLConnection` instance, it will be added to the queue. Args: cnx: The `MySQLConnectionAbstract` subclass object to be added to the pool. If this argument is missing (aka `None`), the pool creates a new connection and adds it. Raises: PoolError: When no configuration is set, when no more connection can be added (maximum reached) or when the connection can not be instantiated. z&Connection configuration not availabler� �compress)r� � � z^Pool reset session is not supported with compression for MySQL server version 5.7.2 or earlierr� N)r) r� r r� �fullrR r� Zserver_versionr rC r� �pool_config_versionr+ r r� r� r. r. r/ r� J s2 ���� �z"MySQLConnectionPool.add_connectionr c C s� t �� z| jjdd�}W n0 tjyH } ztd�|�W Y d}~n d}~0 0 |�� r^| j|jkr�|j f i | j �� z |� � W n t y� | � |� � Y n0 | j|_t| |�W d � S 1 s�0 Y dS )a� Gets a connection from the pool. This method returns an PooledMySQLConnection instance which has a reference to the pool that created it, and the next available MySQL connection. When the MySQL connection is not connect, a reconnect is attempted. Returns: A `PooledMySQLConnection` instance. Raises: PoolError: On errors. Fr� z)Failed getting connection; pool exhaustedN)r) r� r& r� �Emptyr Z is_connectedr� r� rS r� Z reconnectr r� r r� r. r. r/ r, } s" � � z"MySQLConnectionPool.get_connectionc C s� t �� d}| j}|�� r�z |jdd�}|�� |d7 }W q tjy^ | Y W d � S typ � Y q ty� Y q0 q|W d � S 1 s�0 Y dS )z�Close all connections This method closes all connections. It returns the number of connections it closed. Used mostly for tests. Returns int. r Fr� r N) r) r� �qsizer& Z disconnectr� r� r r )rw r� Zcnxqrt r. r. r/ �_remove_connections� s z'MySQLConnectionPool._remove_connections)r� NT)N)r� r� r� r� rx r� r! r# r� r� r� r� r� r� r, r� r. r. r. r/ r* � s$ �8 3$r* ):r� � __future__r r� rN �re� threading�typesr �typingr r r r r r r r �uuidr Z dns.exceptionrh Z dns.resolverr' rg Zconnection_cextr � connectionr � constantsr r �errorsr r r r r Z optionfilesr Z abstractsr �RLockr) r� r� �compiler� r( r �__annotations__r r0 r\ rR r% r r* r. r. r. r/ �<module> sL ( � ]|T
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