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plugin.cpython-310.pyc
o �b ! � @ s< d Z ddlZddlZddlZddlZddlmZmZmZm Z ddl m Z m Z ddl mZ ddlmZ ddlmZ ddlmZ G d d � d e �ZG d d � d �ZG d d� d�Zdd� ZzejZW n eyk d dd�ZY nw dd� Z dej fdd�Z e de d�Z d dee deej dee fd d �Z e Z!d d � Z"d d gZ#dS )!zL Plugin system for Twisted. @author: Jp Calderone @author: Glyph Lefkowitz � N)�Iterable�Optional�Type�TypeVar)� Interface� providedBy)�log)�getAdapterFactory)� getModule)�namedAnyc @ s e Zd ZdZdS )�IPluginz� Interface that must be implemented by all plugins. Only objects which implement this interface will be considered for return by C{getPlugins}. To be useful, plugins should also implement some other application-specific interface. N)�__name__� __module__� __qualname__�__doc__� r r �0/usr/lib/python3/dist-packages/twisted/plugin.pyr s r c @ s8 e Zd Zdd� Zdefdd�Zdd� Zd d d �ZeZdS ) � CachedPluginc C s* || _ || _|| _|| _| j j�| � d S �N)�dropin�name� description�provided�plugins�append)�selfr r r r r r r �__init__' s zCachedPlugin.__init__�returnc C s& d� | j| jjd�dd� | jD ���S )Nz(<CachedPlugin {!r}/{!r} (provides {!r})>z, c S s g | ]}|j �qS r )r )�.0�ir r r � <listcomp>2 s z)CachedPlugin.__repr__.<locals>.<listcomp>)�formatr r � moduleName�joinr �r r r r �__repr__. s �zCachedPlugin.__repr__c C s t | jjd | j �S )N�.)r r r" r r$ r r r �load5 s zCachedPlugin.loadNc C sH | j D ] }|�|�r| �� S t||d �d ur!|| �� |� S q|S r )r � isOrExtendsr' r )r � interface�registry�default�providedInterfacer r r � __conform__8 s �zCachedPlugin.__conform__)NN) r r r r �strr% r' r- � getComponentr r r r r & s r c @ s e Zd ZdZdd� ZdS )� CachedDropina� A collection of L{CachedPlugin} instances from a particular module in a plugin package. @type moduleName: C{str} @ivar moduleName: The fully qualified name of the plugin module this represents. @type description: C{str} or L{None} @ivar description: A brief explanation of this collection of plugins (probably the plugin module's docstring). @type plugins: C{list} @ivar plugins: The L{CachedPlugin} instances which were loaded from this dropin. c C s || _ || _g | _d S r )r" r r )r r" r r r r r V s zCachedDropin.__init__N)r r r r r r r r r r0 D s r0 c C sP t | j| j�}| j�� D ]\}}t|d �}|d ur%t|||jtt|��� q |S r ) r0 r r �__dict__�itemsr r �listr )�providerr �k�v�pluginr r r �_generateCacheEntry\ s �r8 c C s i }| D ]}|||< q|S r r )�keys�value�dr5 r r r �fromkeysj s r< c C s� i }t | j�}i }|�� D ]}|j�� }||vr g ||< || }|�|� q |�� D ]�\}}|�d�}z |�� } |� d�� } t � | �} W d � n1 sMw Y W n t y` i } d} Y nw d} i } |D ]7}|j �d�d }d| |< || vs�|j�� | kr�d} z|� � }W n t y� t�� Y qgw t|�}|| |< qgt| �� �D ] }|| vr�| |= d} q�| r�z |�t �| �� W n* ty� } ztjd |j|jd � W Y d}~nd}~w t y� t�dd � Y nw |�| � q*|S ) a; Compute all the possible loadable plugins, while loading as few as possible and hitting the filesystem as little as possible. @param module: a Python module object. This represents a package to search for plugins. @return: a dictionary mapping module names to L{CachedDropin} instances. z dropin.cache�rNr Fr& ���Tz@Unable to write to plugin cache %(path)s: error number %(errno)d)r! �path�errnoz)Unexpected error while writing cache file)r r � iterModules�filePath�parentr r2 �child�getModificationTime�open�pickler' � BaseExceptionr �splitr �errr8 r3 r9 � setContent�dumps�OSError�msgr? r@ �update)�module�allCachesCombined�mod�buckets�plugmod�fpp�bucket�pseudoPackagePath� dropinPath� lastCached�f�dropinDotCache� needsWrite� existingKeys� pluginModule� pluginKeyr4 �entry�er r r �getCacheq sr �� � ����� � rb r c C s dd l m} | S )Nr )�twisted.pluginsr ��packager r r �_pluginsPackage� s rf � _TInterface)�boundr) re c c sr � |du rt � }t|�}|�� D ]&\}}|jD ] }z| |d�}W n ty- t�� Y qw |dur5|V qqdS )ac Retrieve all plugins implementing the given interface beneath the given module. @param interface: An interface class. Only plugins which implement this interface will be returned. @param package: A package beneath which plugins are installed. For most uses, the default value is correct. @return: An iterator of plugins. N)rf rb r2 r rH r rJ )r) re � allDropins�keyr r7 �adaptedr r r � getPlugins� s � ����rl c s | � d�� � fdd�tjD �S )a� Return a list of additional directories which should be searched for modules to be included as part of the named plugin package. @type name: C{str} @param name: The fully-qualified Python name of a plugin package, eg C{'twisted.plugins'}. @rtype: C{list} of C{str} @return: The absolute paths to other directories which may contain plugin modules for the named plugin package. r& c sJ g | ]!}t j�t jj|g� d g �R � �st j�t jj|g� �R � ��qS )z __init__.py)�osr? �existsr# �abspath)r �xrd r r r � s ��z&pluginPackagePaths.<locals>.<listcomp>)rI �sysr? )r r rd r �pluginPackagePaths� s �rr r )$r rm rG rq �types�typingr r r r �zope.interfacer r �twisted.pythonr �twisted.python.componentsr �twisted.python.modulesr �twisted.python.reflectr r r r0 r8 �dictr< �AttributeErrorrb � ModuleTyperf rg rl � getPlugInsrr �__all__r r r r �<module> sD � L ��� �