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o ;jZ � @ s� d Z ddlmZ ddlZddlZddlZddlmZ ddlm Z m Z m Z m Z m Z mZmZ ddlmZ ddlmZ ddlZddlZddlmZmZ dd lmZ G d d � d �ZdS ) z�A utility class for event-based messaging on a zmq socket using tornado. .. seealso:: - :mod:`zmq.asyncio` - :mod:`zmq.eventloop.future` � )� annotationsN)�Queue)�Any� Awaitable�Callable�Literal�Sequence�cast�overload)�IOLoop)�gen_log)�POLLIN�POLLOUT)�jsonapic @ sF e Zd ZU dZded< ded< ded< ded < d ed < d ed < d ed < dZded< dZded< dZded< ded< d�d�dd�Zdd� Z d d � Z d d � Z d�d"d#�Z e d�d'd(��Ze d�d+d(��Ze d�d.d(��Ze /d�d�d1d(��Z 2d�d�d3d(�Ze d�d5d6��Ze d�d7d6��Ze d�d9d6��Ze /d�d�d;d6��Z 2d�d�d<d6�Zd�d>d?�Zd�dAdB�Zd�dCdD�Z 2 d�d�dKdL�Z M d�d�dQdR�ZeZ d�d�dTdU�Z V d�d�dXdY�ZdZd[� ZejejB dfd�d_d`�Z d�dadb�Z d�d�ddde�Z d�dfdg�Z d�dhdi�Z d�djdk�Z!dldm� Z"dndo� Z#dpdq� Z$drds� Z%dtdu� Z&dvdw� Z'dxdy� Z(dzd{� Z)d|d}� Z*d~d� Z+dS )�� ZMQStreama� A utility class to register callbacks when a zmq socket sends and receives For use with tornado IOLoop. There are three main methods Methods: * **on_recv(callback, copy=True):** register a callback to be run every time the socket has something to receive * **on_send(callback):** register a callback to be run every time you call send * **send_multipart(self, msg, flags=0, copy=False, callback=None):** perform a send that will trigger the callback if callback is passed, on_send is also called. There are also send_multipart(), send_json(), send_pyobj() Three other methods for deactivating the callbacks: * **stop_on_recv():** turn off the recv callback * **stop_on_send():** turn off the send callback which simply call ``on_<evt>(None)``. The entire socket interface, excluding direct recv methods, is also provided, primarily through direct-linking the methods. e.g. >>> stream.bind is stream.socket.bind True .. versionadded:: 25 send/recv callbacks can be coroutines. .. versionchanged:: 25 ZMQStreams only support base zmq.Socket classes (this has always been true, but not enforced). If ZMQStreams are created with e.g. async Socket subclasses, a RuntimeWarning will be shown, and the socket cast back to the default zmq.Socket before connecting events. Previously, using async sockets (or any zmq.Socket subclass) would result in undefined behavior for the arguments passed to callback functions. Now, the callback functions reliably get the return value of the base `zmq.Socket` send/recv_multipart methods (the list of message frames). � zmq.Socket�socketr �io_loopz zmq.Poller�pollerr � _send_queue�Callable | None�_recv_callback�_send_callback�_close_callbackr �int�_stateF�bool�_flushed� _recv_copy�_fdN� IOLoop | Nonec C s� t |tjj�rtjd|j� d�tdd� tj|d�}|| _ |p"t � � | _ t� � | _tt| j j�| _t� | _d | _d | _d | _d| _d| _d| _| �� | j j | _ | j j | _ | j j | _ | j j | _ | j j | _ | j j!| _!| j j"| _"| j j#| _#| j j$| _$d S )Nz�ZMQStream only supports the base zmq.Socket class. Use zmq.Socket(shadow=other_socket) or `ctx.socket(zmq.z�, socket_class=zmq.Socket)` to create a base zmq.Socket object, no matter what other kind of socket your Context creates. � �� stacklevel)ZshadowFr )%� isinstance�zmqZ_futureZ _AsyncSocket�warnings�warnZ _type_name�RuntimeWarningZSocketr r �currentr ZPollerr r r ZFDr r r r r r r r r �_init_io_state�bindZbind_to_random_port�connect� setsockopt� getsockoptZsetsockopt_stringZgetsockopt_stringZsetsockopt_unicodeZgetsockopt_unicode)�selfr r � r0 �K/opt/saltstack/salt/lib/python3.10/site-packages/zmq/eventloop/zmqstream.py�__init__a s< �� zZMQStream.__init__c C � | � d�S )z)Disable callback and automatic receiving.N)�on_recv�r/ r0 r0 r1 � stop_on_recv� � zZMQStream.stop_on_recvc C r3 )z Disable callback on sending.N)�on_sendr5 r0 r0 r1 � stop_on_send� r7 zZMQStream.stop_on_sendc C � t �d� dS �zDEPRECATED, does nothingz(on_err does nothing, and will be removedN�r r' r5 r0 r0 r1 � stop_on_err� � zZMQStream.stop_on_err�callbackr c C r: r; r< �r/ r? r0 r0 r1 �on_err� r> zZMQStream.on_err� Callable[[list[bytes]], Any]�return�Nonec C � d S �Nr0 r@ r0 r0 r1 r4 � � zZMQStream.on_recv�copy� Literal[True]c C rE rF r0 �r/ r? rH r0 r0 r1 r4 � � � Callable[[list[zmq.Frame]], Any]�Literal[False]c C rE rF r0 rJ r0 r0 r1 r4 � rK .�?Callable[[list[zmq.Frame]], Any] | Callable[[list[bytes]], Any]c C rE rF r0 rJ r0 r0 r1 r4 � rK Tc C sP | � � |du st|�sJ �|| _|| _|du r | �tj� dS | �tj� dS )a� Register a callback for when a message is ready to recv. There can be only one callback registered at a time, so each call to `on_recv` replaces previously registered callbacks. on_recv(None) disables recv event polling. Use on_recv_stream(callback) instead, to register a callback that will receive both this ZMQStream and the message, instead of just the message. Parameters ---------- callback : callable callback must take exactly one argument, which will be a list, as returned by socket.recv_multipart() if callback is None, recv callbacks are disabled. copy : bool copy is passed directly to recv, so if copy is False, callback will receive Message objects. If copy is True, then callback will receive bytes/str objects. Returns : None N)� _check_closed�callabler r �_drop_io_stater% r � _add_io_staterJ r0 r0 r1 r4 � s �'Callable[[ZMQStream, list[bytes]], Any]c C rE rF r0 r@ r0 r0 r1 �on_recv_stream� rG zZMQStream.on_recv_streamc C rE rF r0 rJ r0 r0 r1 rT � rK �+Callable[[ZMQStream, list[zmq.Frame]], Any]c C rE rF r0 rJ r0 r0 r1 rT � rK �UCallable[[ZMQStream, list[zmq.Frame]], Any] | Callable[[ZMQStream, list[bytes]], Any]c C rE rF r0 rJ r0 r0 r1 rT � s c s4 � du r �� � dS � �fdd�}�j||d� dS )a Same as on_recv, but callback will get this stream as first argument callback must take exactly two arguments, as it will be called as:: callback(stream, msg) Useful when a single callback should be used with multiple streams. Nc s � �| �S rF r0 )�msg�r? r/ r0 r1 �stream_callback s z1ZMQStream.on_recv_stream.<locals>.stream_callback�rH )r6 r4 )r/ r? rH rY r0 rX r1 rT � s �9Callable[[Sequence[Any], zmq.MessageTracker | None], Any]c C s& | � � |du st|�sJ �|| _dS )a� Register a callback to be called on each send There will be two arguments:: callback(msg, status) * `msg` will be the list of sendable objects that was just sent * `status` will be the return result of socket.send_multipart(msg) - MessageTracker or None. Non-copying sends return a MessageTracker object whose `done` attribute will be True when the send is complete. This allows users to track when an object is safe to write to again. The second argument will always be None if copy=True on the send. Use on_send_stream(callback) to register a callback that will be passed this ZMQStream as the first argument, in addition to the other two. on_send(None) disables recv event polling. Parameters ---------- callback : callable callback must take exactly two arguments, which will be the message being sent (always a list), and the return result of socket.send_multipart(msg) - MessageTracker or None. if callback is None, send callbacks are disabled. N)rO rP r r@ r0 r0 r1 r8 s & zZMQStream.on_send�DCallable[[ZMQStream, Sequence[Any], zmq.MessageTracker | None], Any]c s, � du r �� � dS ��� �fdd�� dS )z�Same as on_send, but callback will get this stream as first argument Callback will be passed three arguments:: callback(stream, msg, status) Useful when a single callback should be used with multiple streams. Nc s � �| |�S rF r0 )rW �statusrX r0 r1 �<lambda>P s z*ZMQStream.on_send_stream.<locals>.<lambda>)r9 r8 r@ r0 rX r1 �on_send_streamA s zZMQStream.on_send_streamc K s | j |gf||||d�|��S )ztSend a message, optionally also register a new callback for sends. See zmq.socket.send for details. )�flagsrH �trackr? )�send_multipart�r/ rW r` rH ra r? �kwargsr0 r0 r1 �sendR s ���zZMQStream.sendrW � Sequence[Any]r` ra rd r c K s` |� t|||d�� | j�||f� |p| j}|dur!| �|� n| �dd� � | �tj� dS )z�Send a multipart message, optionally also register a new callback for sends. See zmq.socket.send_multipart for details. )r` rH ra Nc W rE rF r0 )�argsr0 r0 r1 r^ m s z*ZMQStream.send_multipart.<locals>.<lambda>) �update�dictr �putr r8 rR r% r rc r0 r0 r1 rb Z s zZMQStream.send_multipart�utf-8�u�str�encodingc K s0 t |t�s td��| j|�|�f||d�|��S )zbSend a unicode message with an encoding. See zmq.socket.send_unicode for details. zunicode/str objects only�r` r? )r$ rm � TypeErrorre �encode)r/ rl r` rn r? rd r0 r0 r1 � send_stringp s zZMQStream.send_string�objc K s" t �|�}| j|f||d�|��S )zaSend json-serialized version of an object. See zmq.socket.send_json for details. ro )r �dumpsre )r/ rs r` r? rd rW r0 r0 r1 � send_json� s zZMQStream.send_json����protocolc K s$ t �||�}| j||fd|i|��S )ztSend a Python object as a message using pickle to serialize. See zmq.socket.send_json for details. r? )�picklert re )r/ rs r` rw r? rd rW r0 r0 r1 � send_pyobj� s zZMQStream.send_pyobjc C s d| _ dS )z%callback for unsetting _flushed flag.FN)r r5 r0 r0 r1 � _finish_flush� r7 zZMQStream._finish_flush�flag�limit� int | Nonec s, �� � �j}d�_d}� �fdd�}|� � � sdS �j��j� � �j�d�}|r||r0||k r||d \}}|t@ rH��� |d7 }�jdu rHn4|t@ r^�� � r^�� � |d7 }�jdu r^n |� � � rr�j��j� � �j�d�}ng }|r||r0||k s0|r�d�_|s��j � �j � n|r�d�_��� |S )a� Flush pending messages. This method safely handles all pending incoming and/or outgoing messages, bypassing the inner loop, passing them to the registered callbacks. A limit can be specified, to prevent blocking under high load. flush will return the first time ANY of these conditions are met: * No more events matching the flag are pending. * the total number of events handled reaches the limit. Note that if ``flag|POLLIN != 0``, recv events will be flushed even if no callback is registered, unlike normal IOLoop operation. This allows flush to be used to remove *and ignore* incoming messages. Parameters ---------- flag : int default=POLLIN|POLLOUT 0MQ poll flags. If flag|POLLIN, recv events will be flushed. If flag|POLLOUT, send events will be flushed. Both flags can be set at once, which is the default. limit : None or int, optional The maximum number of messages to send or receive. Both send and recv count against this limit. Returns ------- int : count of events handled (both send and recv) Fr c s � t j@ ��� o � t j@ B S )zgUpdate the poll flag, to prevent registering POLLOUT events if we don't have pending sends.)r% r �sendingr r0 �r{ r/ r0 r1 � update_flag� s z$ZMQStream.flush.<locals>.update_flag� NT)rO r r �registerr �pollr � _handle_recvr r~ � _handle_sendr � add_callbackrz �_rebuild_io_state) r/ r{ r| Zalready_flushed�countr� �events�s�eventr0 r r1 �flush� sJ ! ��zZMQStream.flushc C s || _ dS )z2Call the given callback when the stream is closed.N)r r@ r0 r0 r1 �set_close_callback� r7 z ZMQStream.set_close_callback�lingerc C sx | j dur8| j jr tjd| j� d�dd� | j�| j� n | j�| j � | j �|� d| _ | jr:| � | j� dS dS dS )zClose this stream.NzUnregistering FD z� after closing socket. This could result in unregistering handlers for the wrong socket. Please use stream.close() instead of closing the socket directly.r! r" ) r �closedr& r' r r Zremove_handler�closer � _run_callback)r/ r� r0 r0 r1 r� � s � �zZMQStream.closec C s | j duS )z;Returns True if we are currently receiving from the stream.N)r r5 r0 r0 r1 � receiving r7 zZMQStream.receivingc C s | j �� S )z7Returns True if we are currently sending to the stream.)r �emptyr5 r0 r0 r1 r~ s zZMQStream.sendingc C s& | j d u rdS | j jr| �� dS dS )NTF)r r� r� r5 r0 r0 r1 r� s zZMQStream.closedc O sn z||i |��}t |t�rt�|�}nd}W n ty% tjddd� � w |dur5dd� }|�|� dS dS )zMWrap running callbacks in try/except to allow us to close our socket.N�(Uncaught exception in ZMQStream callbackT��exc_infoc S s2 z| � � W d S ty tjddd� Y d S w )Nr� Tr� )�result� Exceptionr �error)�fr0 r0 r1 � _log_error3 s ��z+ZMQStream._run_callback.<locals>._log_error)r$ r �asyncioZ ensure_futurer� r r� Zadd_done_callback)r/ r? rg rd r� r� r0 r0 r1 r� " s � ��zZMQStream._run_callbackc C s | j s t�d| � dS z| j j}W n; tjy& t�d| � | �� Y dS tjyL } z| �� r:t�d| |� nt�d| |� W Y d}~dS d}~ww z-|tj @ ra| � � ra| � � | j saW dS |tj @ rt| � � rt| �� | j stW dS | �� W dS ty� tjddd� � w ) z�This method is the actual handler for IOLoop, that gets called whenever an event on my socket is posted. It dispatches to _handle_recv, etc.z Got events for closed stream %sNz2Got events for stream %s after terminating contextz6Got events for stream %s attached to closed socket: %sz Error getting events for %s: %sz(Uncaught exception in zmqstream callbackTr� )r r �warningZEVENTSr% ZContextTerminatedr� �ZMQErrorr� r r� r� r r~ r� r� r� )r/ �fdr� Z zmq_events�er0 r0 r1 �_handle_events= s@ ��� �zZMQStream._handle_eventsc C s| | j rdS z | jjtj| jd�}W n tjy- } z|jtjkr!n� W Y d}~dS d}~ww | j r<| j }| � ||� dS dS )zHandle a recv event.NrZ ) r r Zrecv_multipartr% ZNOBLOCKr r� �errno�EAGAINr r� )r/ rW r� r? r0 r0 r1 r� f s ����zZMQStream._handle_recvc C s� | j rdS | �� st�d� dS | j�� \}}z | jj|fi |��}W n tj y> } zt�d|� |}W Y d}~nd}~ww | j rN| j }| � |||� dS dS )zHandle a send event.Nz#Shouldn't have handled a send eventzSEND Error: %s) r r~ r r� r �getr rb r% r� r r� )r/ rW rd r] r� r? r0 r0 r1 r� w s" ���zZMQStream._handle_sendc C s | j std��d S )NzStream is closed)r �OSErrorr5 r0 r0 r1 rO � s �zZMQStream._check_closedc C sJ | j du rdS d}| �� r|tjO }| �� r|tjO }|| _| �|� dS )z8rebuild io state based on self.sending() and receiving()Nr )r r� r% r r~ r r �_update_handler�r/ �stater0 r0 r1 r� � s zZMQStream._rebuild_io_statec C s | j |B | _ | �| j � dS )zAdd io_state to poller.N�r r� r� r0 r0 r1 rR � s zZMQStream._add_io_statec C s | j | @ | _ | �| j � dS )z&Stop poller from watching an io_state.Nr� r� r0 r0 r1 rQ � s zZMQStream._drop_io_statec s6 � j du rdS |� j j@ r� j�� fdd�� dS dS )z!Update IOLoop handler with state.Nc s � � � jd�S )Nr )r� r r0 r5 r0 r1 r^ � s z+ZMQStream._update_handler.<locals>.<lambda>)r r� r r� r� r0 r5 r1 r� � s �zZMQStream._update_handlerc C s | j �| j| j| j j� dS )z#initialize the ioloop event handlerN)r Z add_handlerr r� ZREADr5 r0 r0 r1 r* � s zZMQStream._init_io_staterF )r r r r )r? r )r? rB rC rD )r? rB rH rI rC rD )r? rL rH rM rC rD ).)r? rN rH r )T)r? rN rH r rC rD )r? rS rC rD )r? rS rH rI rC rD )r? rU rH rM rC rD )r? rV rH r )r? r[ )r? r\ )r TFN)rW rf r` r rH r ra r r? r rd r rC rD )r rk N) rl rm r` r rn rm r? r rd r )r N)rs r r` r r? r rd r )r rv N) rs r r` r rw r r? r rd r )r{ r r| r} )r? r )r� r} rC rD )rC r ),�__name__� __module__� __qualname__�__doc__�__annotations__r r r r2 r6 r9 r= rA r r4 rT r8 r_ re rb rr Z send_unicoderu ry rz r% r r r� r� r� r� r~ r� r� r� r� r� rO r� rR rQ r� r* r0 r0 r0 r1 r s� 5 - � �' � � * � � � � V ) r )r� � __future__r r� rx r& �queuer �typingr r r r r r r Ztornado.ioloopr Z tornado.logr r% Z zmq._futurer r Z zmq.utilsr r r0 r0 r0 r1 �<module> s $
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