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a t�h#5 � @ s� d Z ddlZddlZddlZddlZddlmZ ddlmZ ddlm Z ddl m Z m Z ddl mZ ddlmZ dd lmZ d Zee�Zd d � Zd d� Zdd� Zed�Ze� ZdZ G dd� d�Z dS )z'Implementation of the Observer pattern.� N)� WeakMethod)�retry_over_time)�CDeprecationWarning)� PromiseProxy�Proxy)�fun_accepts_kwargs)� get_logger)�humanize_seconds)�Signalc C s@ t | t�r| �� } t | ttf�r$| S t| d�r8t| j�S t| �S )N�__func__)� isinstancer �_get_current_object�bytes�str�hasattr�idr )�target� r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/celery/utils/dispatch/signal.py�_make_id s r c C s: z| j | j t| jfW S ty4 tj| f Y S 0 dS )a Get weakref constructor appropriate for `obj`. `obj` may be a bound method. Bound method objects must be special-cased because they're usually garbage collected immediately, even if the instance they're bound to persists. Returns: a (weakref constructor, main object) tuple. `weakref constructor` is either :class:`weakref.ref` or :class:`weakref.WeakMethod`. `main object` is the instance that `obj` is bound to if it is a bound method; otherwise `main object` is simply `obj. N)r �__self__r �AttributeError�weakref�ref)�objr r r �_boundmethod_safe_weakref s r c C s$ |r|t |�fS t | �t |�fS d S �N)r )�receiver�sender� dispatch_uidr r r �_make_lookup_key6 s r zDCould not process signal receiver %(receiver)s. Retrying %(when)s...c @ s� e Zd ZdZdZd dd�Zdd� Zdd � Zd d � Zd d d �Z d dd�Z dd� Z e Z dd� Z dd� Zd dd�Zdd� Zdd� ZdS ) r a Create new signal. Keyword Arguments: providing_args (List): A list of the arguments this signal can pass along in a :meth:`send` call. use_caching (bool): Enable receiver cache. name (str): Name of signal, used for debugging purposes. NFc C sN g | _ t|d ur|ng �| _t�� | _|| _|| _|r>t� � ni | _ d| _ d S )NF) � receivers�set�providing_args� threading�Lock�lock� use_caching�namer �WeakKeyDictionary�sender_receivers_cache�_dead_receivers)�selfr# r' r( r r r �__init__T s � �zSignal.__init__c C s | j ||�� ||d�S )N)r �weakr )�connectr )r, �funr r. r r r r �_connect_proxye s �zSignal._connect_proxyc sJ d� fdd� }|r<t |d �r<||dd� i |��|d �S ||i |��S ) a� Connect receiver to sender for signal. Arguments: receiver (Callable): A function or an instance method which is to receive signals. Receivers must be hashable objects. if weak is :const:`True`, then receiver must be weak-referenceable. Receivers must be able to accept keyword arguments. If receivers have a `dispatch_uid` attribute, the receiver will not be added if another receiver already exists with that `dispatch_uid`. sender (Any): The sender to which the receiver should respond. Must either be a Python object, or :const:`None` to receive events from any sender. weak (bool): Whether to use weak references to the receiver. By default, the module will attempt to use weak references to the receiver objects. If this parameter is false, then strong references will be used. dispatch_uid (Hashable): An identifier used to uniquely identify a particular instance of a receiver. This will usually be a string, though it may be anything hashable. retry (bool): If the signal receiver raises an exception (e.g. ConnectionError), the receiver will be retried until it runs successfully. A strong ref to the receiver will be stored and the `weak` option will be ignored. NTFc s � ����fdd�}|S )Nc sR � �d�}dd� }�r6d|d< � s.t | �|d< || �} ��| �|d |d � | S )N)r r. c s � fdd�}|S )Nc s � fdd�}t � t| ||�S )Nc s, t |�}t� t|dd�d� }t�|� |S )N�in� )r �when)�next�RECEIVER_RETRY_ERRORr �logger�error)�excZ intervals�retries�interval�err_msg�� retry_funr r �on_error� s �� z�Signal.connect.<locals>._handle_options.<locals>._connect_signal.<locals>._retry_receiver.<locals>._try_receiver_over_time.<locals>.on_error)r � Exception)�args�kwargsr? r= r r �_try_receiver_over_time� s �zzSignal.connect.<locals>._handle_options.<locals>._connect_signal.<locals>._retry_receiver.<locals>._try_receiver_over_timer )r> rC r r= r �_retry_receiver� s zYSignal.connect.<locals>._handle_options.<locals>._connect_signal.<locals>._retry_receiverFr. r )r �_connect_signal)r0 �optionsrD )r �retryr, r r. r r rE � s � �z@Signal.connect.<locals>._handle_options.<locals>._connect_signalr )r r. r rG rE �r, )r rG r r. r �_handle_options� s "z'Signal.connect.<locals>._handle_optionsr � )NTNF)�callable)r, rA rB rI r rH r r/ k s " �' zSignal.connectc C s� t |�sJ d��t|�s td��t|t�rB|�| j||||� |S t|||�}|rtt|�\}}||�}t � || j � | j �N | � � | jD ]\}} ||kr� q�q�| j�||f� | j�� W d � n1 s�0 Y |S )Nz!Signal receivers must be callablez.Signal receiver must accept keyword arguments.)rK r � ValueErrorr r Z__then__r1 r r r �finalize�_remove_receiverr& �_clear_dead_receiversr! �appendr* �clear) r, r r r. r � lookup_keyr Zreceiver_object�r_key�_r r r rE � s. � � (zSignal._connect_signalc C s� |durt jdtdd� t|||�}d}| j�\ | �� tt| j��D ]*}| j| \}} ||krFd}| j|= qrqF| j � � W d � n1 s�0 Y |S )a8 Disconnect receiver from sender for signal. If weak references are used, disconnect needn't be called. The receiver will be removed from dispatch automatically. Arguments: receiver (Callable): The registered receiver to disconnect. May be none if `dispatch_uid` is specified. sender (Any): The registered sender to disconnect. weak (bool): The weakref state to disconnect. dispatch_uid (Hashable): The unique identifier of the receiver to disconnect. Nz+Passing `weak` to disconnect has no effect.� )� stacklevelFT) �warnings�warnr r r& rO �range�lenr! r* rQ ) r, r r r. r rR Z disconnected�indexrS rT r r r � disconnect� s" � (zSignal.disconnectc C s t | �|��S r )�bool�_live_receivers)r, r r r r � has_listeners� s zSignal.has_listenersc K s� g }| j r| j�|�tu r |S | �|�D ]�}z|f | |d�|��}W nX ty� } z@t|d�slt�� d |_ t � d||� |� ||f� W Y d}~q(d}~0 0 |� ||f� q(|S )uA Send signal from sender to all connected receivers. If any receiver raises an error, the exception is returned as the corresponding response. (This is different from the "send" in Django signals. In Celery "send" and "send_robust" do the same thing.) Arguments: sender (Any): The sender of the signal. Either a specific object or :const:`None`. **named (Any): Named arguments which will be passed to receivers. Returns: List: of tuple pairs: `[(receiver, response), … ]`. )�signalr � __traceback__rU z Signal handler %r raised: %rN) r! r* �get� NO_RECEIVERSr^ r@ r �sys�exc_infora r7 � exceptionrP )r, r �named� responsesr �responser9 r r r �send� s" � �$z Signal.sendc C sP | j rLd| _ g }| jD ].}t|d tj�r:|d � d u r:q|�|� q|| _d S )NFrJ )r+ r! r r � ReferenceTyperP )r, Z new_receivers�rr r r rO s z Signal._clear_dead_receiversc C s� d}| j r(| js(| j�|�}|tu r(g S |du r�| j�r | �� t|�}g }| jD ]&\\}}}|t ksn||krR|� |� qR| j r�|s�t| j|< n || j|< W d � n1 s�0 Y g }|D ]4}t |t j �r�|� }|dur�|� |� q�|� |� q�|S )z�Filter sequence of receivers to get resolved, live receivers. This checks for weak references and resolves them, then returning only live receivers. N)r' r+ r* rb rc r& rO r r! �NONE_IDrP r r rk )r, r r! Z senderkeyZ receiverkeyZ r_senderkeyr Znon_weak_receiversr r r r^ + s2 ( zSignal._live_receiversc C s d| _ dS )z'Remove dead receivers from connections.TN)r+ )r, r r r r rN R s zSignal._remove_receiverc C s" dt | �j� d| j� d| j�d�S )z``repr(signal)``.�<z: z providing_args=�>)�type�__name__r( r# rH r r r �__repr__\ s zSignal.__repr__c C s t | �S )z``str(signal)``.)�reprrH r r r �__str__` s zSignal.__str__)NFN)NNNN)N)N)rq � __module__� __qualname__�__doc__r! r- r1 r/ rE r\ r_ rj Z send_robustrO r^ rN rr rt r r r r r F s" M � % ' r ) rw rd r$ rW r r Zkombu.utils.functionalr Zcelery.exceptionsr Z celery.localr r Zcelery.utils.functionalr Zcelery.utils.logr Zcelery.utils.timer �__all__rq r7 r r r rm �objectrc r6 r r r r r �<module> s(
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