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trio.cpython-310.pyc
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This doesn't run any separate tasks: sending and receiving are done in the task that calls those methods. It's suitable for implementing servers: several worker tasks can receive requests and send replies. For a typical client pattern, see :class:`DBusRouter`. Implements trio's channel interface for Message objects. Fc C sD || _ || _t� | _tdd�| _d | _t�� | _ t�� | _ d | _ d S )Nr )�start) �socket� enable_fdsr �parserr �outgoing_serial� unique_namer! �Lock� send_lock� recv_lock�_leftover_to_send)�selfr+ r, r& r& r' �__init__I s zDBusConnection.__init__N��serial�messagec � s� �| j 4 I dH �/ |du rt| j�}| jrt�d�nd}|j||d�}| �||�I dH W d �I dH dS 1 I dH s=w Y dS )z.Serialise and send a :class:`~.Message` objectN�i)�fds)r1 �nextr. r, �array� serialise� _send_data)r4 r8 r7 r: �datar& r& r' �sendS s � .�zDBusConnection.sendr? c � s� �| j jr t�d��t� �Y | jr| �| j�I d H t|��0}|r5| j �|gtj j tj j |fg�I d H }n | j � |�I d H }| �||�I d H W d � n1 sQw Y W d � d S W d � d S 1 siw Y d S )Nz!can't send data after sending EOF) r+ �did_shutdown_SHUT_WRr! r" r( r3 �_send_remainder� memoryview�sendmsg� SOL_SOCKET� SCM_RIGHTSr@ )r4 r? r: �sentr& r& r' r> ^ s" � � ��"�zDBusConnection._send_datar c � s� �z5|t |�k r1||d � �}| j�|�I d H }W d � n1 s"w Y ||7 }|t |�k sd | _W d S tjyF ||d � | _� w �N)�lenr+ r@ r3 r! � Cancelled)r4 r? � already_sent� remainingrG r& r& r' rB q s � � � �z DBusConnection._send_remainder�returnc � s� �| j 4 I dH �/ | j�� }|dur |W d �I dH S | �� I dH \}}|s/t�d��| j�||� q 1 I dH s=w Y dS )z5Return the next available message from the connectionNTz Socket closed at the other end)r2 r- �get_next_message� _read_datar! � EndOfChannel�add_data)r4 �msg�br: r& r& r' �receive s � � ��zDBusConnection.receivec � s� �| j rC| j�� }t� � | j�|t� �I d H \}}}}W d � n1 s&w Y |ttjdd�@ r<| � � t d��|t � |�fS t� � | j� d�I d H }W d � |g fS 1 s]w Y |g fS )N� MSG_CTRUNCr z&Unable to receive all file descriptorsi )r, r- � bytes_desiredr( r+ �recvmsgr �getattrr! �_close� RuntimeErrorr � from_ancdata�recv)r4 �nbytesr? �ancdata�flags�_r& r& r' rO � s$ � � � ��zDBusConnection._read_datac C s | j �� d | _d S rH )r+ �closer3 �r4 r& r& r' rY � s zDBusConnection._closec � s �| � � dS )zClose the D-Bus connectionN)rY rb r& r& r' �aclose� s � zDBusConnection.aclosec C s� �t �� 4 I dH �-}t| �}|�|�I dH z |V W |�� I dH n|�� I dH w W d �I dH dS 1 I dH s<w Y dS )aY Temporarily wrap this connection as a :class:`DBusRouter` To be used like:: async with conn.router() as req: reply = await req.send_and_get_reply(msg) While the router is running, you shouldn't use :meth:`receive`. Once the router is closed, you can use the plain connection again. N)r! � open_nursery� DBusRouterr* rc )r4 �nursery�routerr& r& r' rg � s � ".�zDBusConnection.router)F)r )�__name__� __module__� __qualname__�__doc__r5 r r@ �bytesr> rC rB rT rO rY rc r rg r& r& r& r' r) ? s r) �SESSIONF�r, rM c � s� �t | �}t�|�I dH }t|d�}|D ]}|�|�I dH |�|�� I dH � q|�t�I dH t|j |d�}|� � 4 I dH � }|� t � � �I dH }|jd |_W d �I dH |S 1 I dH sbw Y |S )zHOpen a plain D-Bus connection :return: :class:`DBusConnection` Nrn r )r r! �open_unix_socketr �send_all�feed� receive_somer r) r+ rg �send_and_get_replyr �Hello�bodyr/ ) �busr, �bus_addr�sock�authr�req_data�connrg �replyr& r& r' r � s � ��r c sF e Zd Zdef� fdd� Zedd� �Zdd� Zdd � Zd d � Z � Z S ) �TrioFilterHandle�filtersc s t � �|||� || _d S rH )�superr5 � send_channel)r4 r~ �rule�send_chn�recv_chn�� __class__r& r' r5 � s zTrioFilterHandle.__init__c C s | j S rH ��queuerb r& r& r' �receive_channel� s z TrioFilterHandle.receive_channelc � s �| � � | j�� I d H d S rH )ra r� rc rb r& r& r' rc � s �zTrioFilterHandle.aclosec � s �| j S rH r� rb r& r& r' � __aenter__� s �zTrioFilterHandle.__aenter__c � s �| � � I d H d S rH )rc )r4 �exc_type�exc_val�exc_tbr& r& r' � __aexit__� s �zTrioFilterHandle.__aexit__) rh ri rj r r5 �propertyr� rc r� r� � __classcell__r& r& r� r' r} � s r} c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) �Futurez4A very simple Future for trio based on `trio.Event`.c C s d | _ t�� | _d S rH )�_outcomer! �Event�_eventrb r& r& r' r5 � s zFuture.__init__c C � t |�| _| j�� d S rH )r r� r� �set)r4 �resultr& r& r' � set_result� � zFuture.set_resultc C r� rH )r r� r� r� )r4 r% r& r& r' � set_exception� r� zFuture.set_exceptionc � s �| j �� I d H | j�� S rH )r� �waitr� �unwraprb r& r& r' �get� s � z Future.getN)rh ri rj rk r5 r� r� r� r& r& r& r' r� � s r� c @ s� e Zd ZdZdZdZdefdd�Zedd� �Z dd�d d �Z d e fd d �Z ddd�de ej fdd�Zdejfdd�Zdd� Zde fdd�Zejfdd �ZdS ) re z�A client D-Bus connection which can wait for replies. This runs a separate receiver task and dispatches received messages. Nr{ c C s || _ t� | _t� | _d S rH )�_connr �_repliesr �_filters)r4 r{ r& r& r' r5 s zDBusRouter.__init__c C s | j jS rH )r� r/ rb r& r& r' r/ s zDBusRouter.unique_namer6 c � s �| j j||d�I dH dS )z/Send a message, don't wait for a reply r6 N)r� r@ )r4 r8 r7 r& r& r' r@ s �zDBusRouter.sendrM c � s~ �t |� | jdu rtd��t| jj�}| j�|t� ��}| j ||d�I dH |� � I dH W d � S 1 s8w Y dS )z�Send a method call message and wait for the reply Returns the reply message (method return or error message type). NzThis DBusRouter has stoppedr6 ) r �_rcv_cancel_scoper r; r� r. r� �catchr� r@ r� )r4 r8 r7 � reply_futr& r& r' rs s � $�z DBusRouter.send_and_get_replyr )�channel�bufsizer� c C s, |du r t �|�\}}nd}t| j|||�S )a Create a filter for incoming messages Usage:: async with router.filter(rule) as receive_channel: matching_msg = await receive_channel.receive() # OR: send_chan, recv_chan = trio.open_memory_channel(1) async with router.filter(rule, channel=send_chan): matching_msg = await recv_chan.receive() If the channel fills up, The sending end of the channel is closed when leaving the ``async with`` block, whether or not it was passed in. :param jeepney.MatchRule rule: Catch messages matching this rule :param trio.MemorySendChannel channel: Send matching messages here :param int bufsize: If no channel is passed in, create one with this size N)r! �open_memory_channelr} r� )r4 r� r� r� � recv_channelr& r& r' �filter# s zDBusRouter.filterrf c � s, �| j d ur td��|�| j�I d H | _ d S )Nz+DBusRouter receiver task is already running)r� rZ r* � _receiver)r4 rf r& r& r' r* @ s � zDBusRouter.startc � s0 �| j dur| j �� d| _ t�d�I dH dS )z Stop the sender & receiver tasksNr )r� �cancelr! �sleeprb r& r& r' rc E s � zDBusRouter.acloserR c C sJ | j �|�rdS | j�|�D ]}z|j�|� W q tjy" Y qw dS )zHandle one received messageN)r� �dispatchr� �matchesr� � send_nowaitr! � WouldBlock)r4 rR r� r& r& r' � _dispatchR s ��zDBusRouter._dispatchc � s� �t �� �K}d| _|�|� z | j�� I dH }| �|� qd| _| j�� t � d�� }| j j � � D ] }d|_ |j�� I dH q2W d � w 1 sJw Y w 1 sSw Y dS )z'Receiver loop - runs in a separate taskTNF� )r! � CancelScope� is_running�startedr� rT r� r� �drop_all� move_on_afterr� r~ �values�shieldr� rc )r4 � task_status�cscoperR � cleanup_scoper� r& r& r' r� ] s$ � � � ��zDBusRouter._receiver)rh ri rj rk � _nursery_mgrr� r) r5 r� r/ r@ r rs r r! �MemorySendChannelr� �Nurseryr* rc r� �TASK_STATUS_IGNOREDr� r& r& r& r' re � s re c s( e Zd ZdZ� fdd�Zdd� Z� ZS )r a� A trio proxy for calling D-Bus methods You can call methods on the proxy object, such as ``await bus_proxy.Hello()`` to make a method call over D-Bus and wait for a reply. It will either return a tuple of returned data, or raise :exc:`.DBusErrorResponse`. The methods available are defined by the message generator you wrap. :param msggen: A message generator object. :param ~trio.DBusRouter router: Router to send and receive messages. c s( t � �|� t|t�std��|| _d S )Nz)Proxy can only be used with DBusRequester)r r5 � isinstancere � TypeError�_router)r4 �msggenrg r� r& r' r5 ~ s zProxy.__init__c s � �fdd�}|S )Nc � s< �� | i |��}|j jtju sJ ��j�|�I d H }t|�S rH )�header� message_typer � method_callr� rs r )�args�kwargsrR r| ��make_msgr4 r& r' �inner� s �z!Proxy._method_call.<locals>.innerr& )r4 r� r� r& r� r' � _method_call� s zProxy._method_call)rh ri rj rk r5 r� r� r& r& r� r' r s s r c C s� �t | |d�I dH }|4 I dH �- |�� 4 I dH �}|V W d �I dH n 1 I dH s-w Y W d �I dH dS 1 I dH sCw Y dS )a� Open a D-Bus 'router' to send and receive messages. Use as an async context manager:: async with open_dbus_router() as req: ... :param str bus: 'SESSION' or 'SYSTEM' or a supported address. :return: :class:`DBusRouter` This is a shortcut for:: conn = await open_dbus_connection() async with conn: async with conn.router() as req: ... rn N)r rg )rv r, r{ �rtrr& r& r' r � s �*�.�r )rm )5r< � contextlibr r � itertoolsr �logging�typingr r � ImportError�async_generator�outcomer r r! �trio.abcr � jeepney.authr r � jeepney.busr � jeepney.fdsr r �jeepney.low_levelr r r �jeepney.wrappersr r �jeepney.bus_messagesr �commonr r r r r � getLoggerrh �log�__all__r( r) r r} r� re r r r& r& r& r' �<module> sB � ~u