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Edit: gen.cpython-310.pyc
o �xe�� � @ s� d Z ddlmZmZmZ ddlZddlZddlZddlZddl Z ddl Z ddl Z ddl Z ddl m mZ ddlmZmZmZmZ ddlmZ ddlmZ ddl mZ ddlmZm Z zzdd lm Z W n e ys dd l m Z Y nw W n e y� d ej vr�� dZ Y nw z2zdd l m!Z" W n e y� dd l#m!Z" Y nw zdd l$m%Z% W n e y� dd l#m%Z% Y nw W n e y� d ej vrƂ dd l m"Z" dd� Z%Y nw er�ddl&Z&nddl'Z&G dd� de(�Z)G dd� de(�Z*G dd� de(�Z+G dd� de(�Z,G dd� de(�Z-G dd� de(�Z.d d � Z/d d � Z0dTd!d"�Z1e �2� Z3d#d$� Z4d%d&� Z5G d'd(� d(e(�Z6G d)d*� d*e7�Z8G d+d,� d,e7�Z9G d-d.� d.e9�Z:G d/d0� d0e9�Z;G d1d2� d2e9�Z<d3d4� Z=G d5d6� d6e9�Z>d7d8� Z?dUd:d;�Z@e@ZAG d<d=� d=e9�ZBdUd>d?�ZCd@dA� ZDdVdBdC�ZEdDdE� ZFe� ZGeG�Hd� e� ZIdFeI_ eI�Hd� G dGdH� dHe7�ZJe�KdIdJdKg�ZLdLdM� ZMe jNdNk�r�eOe �PdO�� ne1dPdQ� �ZQdRdS� ZRe du�r�e eR�ZRzddlSZTW n e �y� Y dS w e dS dS )Wa� ``tornado.gen`` is a generator-based interface to make it easier to work in an asynchronous environment. Code using the ``gen`` module is technically asynchronous, but it is written as a single generator instead of a collection of separate functions. For example, the following asynchronous handler: .. testcode:: class AsyncHandler(RequestHandler): @asynchronous def get(self): http_client = AsyncHTTPClient() http_client.fetch("http://example.com", callback=self.on_fetch) def on_fetch(self, response): do_something_with_response(response) self.render("template.html") .. testoutput:: :hide: could be written with ``gen`` as: .. testcode:: class GenAsyncHandler(RequestHandler): @gen.coroutine def get(self): http_client = AsyncHTTPClient() response = yield http_client.fetch("http://example.com") do_something_with_response(response) self.render("template.html") .. testoutput:: :hide: Most asynchronous functions in Tornado return a `.Future`; yielding this object returns its `~.Future.result`. You can also yield a list or dict of ``Futures``, which will be started at the same time and run in parallel; a list or dict of results will be returned when they are all finished: .. testcode:: @gen.coroutine def get(self): http_client = AsyncHTTPClient() response1, response2 = yield [http_client.fetch(url1), http_client.fetch(url2)] response_dict = yield dict(response3=http_client.fetch(url3), response4=http_client.fetch(url4)) response3 = response_dict['response3'] response4 = response_dict['response4'] .. testoutput:: :hide: If the `~functools.singledispatch` library is available (standard in Python 3.4, available via the `singledispatch <https://pypi.python.org/pypi/singledispatch>`_ package on older versions), additional types of objects may be yielded. Tornado includes support for ``asyncio.Future`` and Twisted's ``Deferred`` class when ``tornado.platform.asyncio`` and ``tornado.platform.twisted`` are imported. See the `convert_yielded` function to extend this mechanism. .. versionchanged:: 3.2 Dict support added. .. versionchanged:: 4.1 Support added for yielding ``asyncio`` Futures and Twisted Deferreds via ``singledispatch``. � )�absolute_import�division�print_functionN)�Future�TracebackFuture� is_future� chain_future)�IOLoop)�app_log)� stack_context)�PY3�raise_exc_info)�singledispatchZAPPENGINE_RUNTIME)� Generator)� isawaitable)� GeneratorTypec C � dS �NF� )�xr r �H/opt/saltstack/salt/lib/python3.10/site-packages/salt/ext/tornado/gen.pyr � � r c @ � e Zd ZdS )� KeyReuseErrorN��__name__� __module__� __qualname__r r r r r � � r c @ r )�UnknownKeyErrorNr r r r r r � r r c @ r )�LeakedCallbackErrorNr r r r r r � r r c @ r )� BadYieldErrorNr r r r r r! � r r! c @ r )�ReturnValueIgnoredErrorNr r r r r r" � r r" c @ s e Zd ZdZdS )� TimeoutErrorz%Exception raised by ``with_timeout``.N)r r r �__doc__r r r r r# � s r# c C sB z| j W S ty Y nw z| jd W S ttfy Y d S w )Nr )�value�AttributeError�args� IndexError)�er r r �_value_from_stopiteration� s � �r* c s& t � dd�� t�� �� fdd��}|S )a� Callback-oriented decorator for asynchronous generators. This is an older interface; for new code that does not need to be compatible with versions of Tornado older than 3.0 the `coroutine` decorator is recommended instead. This decorator is similar to `coroutine`, except it does not return a `.Future` and the ``callback`` argument is not treated specially. In most cases, functions decorated with `engine` should take a ``callback`` argument and invoke it with their result when they are finished. One notable exception is the `~tornado.web.RequestHandler` :ref:`HTTP verb methods <verbs>`, which use ``self.finish()`` in place of a callback argument. F��replace_callbackc s* � | i |��}dd� }|� t�|�� d S )Nc S s" | � � d urtd| � � f ��d S )Nz.@gen.engine functions cannot return values: %r)�resultr" ��futurer r r �final_callback� s ���z/engine.<locals>.wrapper.<locals>.final_callback)�add_done_callbackr �wrap)r' �kwargsr/ r0 ��funcr r �wrapper� s zengine.<locals>.wrapper)�_make_coroutine_wrapper� functools�wraps)r5 r6 r r4 r �engine� s r: Tc C s t | dd�S )a> Decorator for asynchronous generators. Any generator that yields objects from this module must be wrapped in either this decorator or `engine`. Coroutines may "return" by raising the special exception `Return(value) <Return>`. In Python 3.3+, it is also possible for the function to simply use the ``return value`` statement (prior to Python 3.3 generators were not allowed to also return values). In all versions of Python a coroutine that simply wishes to exit early may use the ``return`` statement without a value. Functions with this decorator return a `.Future`. Additionally, they may be called with a ``callback`` keyword argument, which will be invoked with the future's result when it resolves. If the coroutine fails, the callback will not be run and an exception will be raised into the surrounding `.StackContext`. The ``callback`` argument is not visible inside the decorated function; it is handled by the decorator itself. From the caller's perspective, ``@gen.coroutine`` is similar to the combination of ``@return_future`` and ``@gen.engine``. .. warning:: When exceptions occur inside a coroutine, the exception information will be stored in the `.Future` object. You must examine the result of the `.Future` object, or the exception may go unnoticed by your code. This means yielding the function if called from another coroutine, using something like `.IOLoop.run_sync` for top-level calls, or passing the `.Future` to `.IOLoop.add_future`. Tr+ )r7 �r5 r, r r r � coroutine� s #r< c s@ � }t td�r t�� �� t�|�� �fdd��}||_d|_|S )z�The inner workings of ``@gen.coroutine`` and ``@gen.engine``. The two decorators differ in their treatment of the ``callback`` argument, so we cannot simply implement ``@engine`` in terms of ``@coroutine``. r< c sd t � }�rd|v r|�d�� t�� �|� fdd�� z �| i |��}W n) ttfy; } z t|�}W Y d }~ntd }~w tyL |� t � � � | Y S w t |t �r�ztjj}t|�}tjj|urlt � }|�t�d�� W n* ttfy� } z |�t|�� W Y d }~n d }~w ty� |� t � � � Y n w t|||�t|< d }z|W d }S d }w |�|� |S )N�callbackc s � | � � �S �N�r- r. �r= r r �<lambda># s z:_make_coroutine_wrapper.<locals>.wrapper.<locals>.<lambda>�Ystack_context inconsistency (probably caused by yield within a "with StackContext" block))r �popr �current� add_future�Return� StopIterationr* � Exception� set_exc_info�sys�exc_info� isinstancer r �_state�contexts�next� set_exception� StackContextInconsistentError� set_result�Runner�_futures_to_runners)r' r3 r/ r- r) �orig_stack_contexts�yieldedr; r@ r r6 sP �� � ���� � z(_make_coroutine_wrapper.<locals>.wrapperT)�hasattr�typesr< r8 r9 � __wrapped__�__tornado_coroutine__)r5 r, �wrappedr6 r r; r r7 s 5r7 c C s t | dd�S )z�Return whether *func* is a coroutine function, i.e. a function wrapped with `~.gen.coroutine`. .. versionadded:: 4.5 rZ F)�getattrr4 r r r �is_coroutine_functionW s r] c s" e Zd ZdZd� fdd� Z� ZS )rF a� Special exception to return a value from a `coroutine`. If this exception is raised, its value argument is used as the result of the coroutine:: @gen.coroutine def fetch_json(url): response = yield AsyncHTTPClient().fetch(url) raise gen.Return(json_decode(response.body)) In Python 3.3, this exception is no longer necessary: the ``return`` statement can be used directly to return a value (previously ``yield`` and ``return`` with a value could not be combined in the same function). By analogy with the return statement, the value argument is optional, but it is never necessary to ``raise gen.Return()``. The ``return`` statement can be used with no arguments instead. Nc s t t| ��� || _|f| _d S r> )�superrF �__init__r% r' )�selfr% �� __class__r r r_ t s zReturn.__init__r> )r r r r$ r_ � __classcell__r r ra r rF ` s rF c @ sH e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dS )� WaitIteratora� Provides an iterator to yield the results of futures as they finish. Yielding a set of futures like this: ``results = yield [future1, future2]`` pauses the coroutine until both ``future1`` and ``future2`` return, and then restarts the coroutine with the results of both futures. If either future is an exception, the expression will raise that exception and all the results will be lost. If you need to get the result of each future as soon as possible, or if you need the result of some futures even if others produce errors, you can use ``WaitIterator``:: wait_iterator = gen.WaitIterator(future1, future2) while not wait_iterator.done(): try: result = yield wait_iterator.next() except Exception as e: print("Error {} from {}".format(e, wait_iterator.current_future)) else: print("Result {} received from {} at {}".format( result, wait_iterator.current_future, wait_iterator.current_index)) Because results are returned as soon as they are available the output from the iterator *will not be in the same order as the input arguments*. If you need to know which future produced the current result, you can use the attributes ``WaitIterator.current_future``, or ``WaitIterator.current_index`` to get the index of the future from the input list. (if keyword arguments were used in the construction of the `WaitIterator`, ``current_index`` will use the corresponding keyword). On Python 3.5, `WaitIterator` implements the async iterator protocol, so it can be used with the ``async for`` statement (note that in this version the entire iteration is aborted if any value raises an exception, while the previous example can continue past individual errors):: async for result in gen.WaitIterator(future1, future2): print("Result {} received from {} at {}".format( result, wait_iterator.current_future, wait_iterator.current_index)) .. versionadded:: 4.1 .. versionchanged:: 4.3 Added ``async for`` support in Python 3.5. c O s� |r|rt d��|r tdd� |�� D ��| _t|�� �}ntdd� t|�D ��| _|}t�� | _ d | _ | _ d | _ |D ]}|� | j� q;d S )Nz)You must provide args or kwargs, not bothc s � � | ] \}}||fV qd S r> r )�.0�k�fr r r � <genexpr>� � � z(WaitIterator.__init__.<locals>.<genexpr>c s re r> r )rf �irh r r r ri � rj )� ValueError�dict�items� _unfinished�list�values� enumerate� collections�deque� _finished� current_index�current_future�_running_futurer1 �_done_callback)r` r' r3 Zfuturesr/ r r r r_ � s � �zWaitIterator.__init__c C s | j s| jrdS d | _| _dS )z2Returns True if this iterator has no more results.FNT)ru ro rv rw �r` r r r �done� s zWaitIterator.donec C s$ t � | _| jr| �| j�� � | jS )z�Returns a `.Future` that will yield the next available result. Note that this `.Future` will not be the same object as any of the inputs. )r rx ru �_return_result�popleftrz r r r rO � s zWaitIterator.nextc C s. | j r| j �� s| �|� d S | j�|� d S r> )rx r{ r| ru �append�r` r{ r r r ry � s zWaitIterator._done_callbackc C s$ t || j� || _| j�|�| _dS )z�Called set the returned future's state that of the future we yielded, and set the current future for the iterator. N)r rx rw ro rC rv r r r r r| � s zWaitIterator._return_resultc C s | �r> r rz r r r � __aiter__� r zWaitIterator.__aiter__c C s | � � r ttd�� �| �� S )N�StopAsyncIteration)r{ r\ �builtinsrO rz r r r � __anext__� s zWaitIterator.__anext__N) r r r r$ r_ r{ rO ry r| r� r� r r r r rd { s 4 rd c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) � YieldPointz�Base class for objects that may be yielded from the generator. .. deprecated:: 4.0 Use `Futures <.Future>` instead. c C � t � �)z�Called by the runner after the generator has yielded. No other methods will be called on this object before ``start``. ��NotImplementedError�r` �runnerr r r �start� � zYieldPoint.startc C r� )z�Called by the runner to determine whether to resume the generator. Returns a boolean; may be called more than once. r� rz r r r �is_ready� r� zYieldPoint.is_readyc C r� )z�Returns the value to use as the result of the yield expression. This method will only be called once, and only after `is_ready` has returned true. r� rz r r r � get_result s zYieldPoint.get_resultN)r r r r$ r� r� r� r r r r r� � s r� c @ �0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) �Callbackaa Returns a callable object that will allow a matching `Wait` to proceed. The key may be any value suitable for use as a dictionary key, and is used to match ``Callbacks`` to their corresponding ``Waits``. The key must be unique among outstanding callbacks within a single run of the generator function, but may be reused across different runs of the same function (so constants generally work fine). The callback may be called with zero or one arguments; if an argument is given it will be returned by `Wait`. .. deprecated:: 4.0 Use `Futures <.Future>` instead. c C � || _ d S r> ��key�r` r� r r r r_ � zCallback.__init__c C s || _ |�| j� d S r> )r� �register_callbackr� r� r r r r� s zCallback.startc C r �NTr rz r r r r� $ r zCallback.is_readyc C � | j �| j�S r> )r� �result_callbackr� rz r r r r� ' � zCallback.get_resultN�r r r r$ r_ r� r� r� r r r r r� s r� c @ r� ) �Waitz�Returns the argument passed to the result of a previous `Callback`. .. deprecated:: 4.0 Use `Futures <.Future>` instead. c C r� r> r� r� r r r r_ 1 r� z Wait.__init__c C r� r> �r� r� r r r r� 4 r� z Wait.startc C r� r> �r� r� r� rz r r r r� 7 r� z Wait.is_readyc C r� r> )r� � pop_resultr� rz r r r r� : r� zWait.get_resultNr� r r r r r� + s r� c @ r� ) �WaitAlla8 Returns the results of multiple previous `Callbacks <Callback>`. The argument is a sequence of `Callback` keys, and the result is a list of results in the same order. `WaitAll` is equivalent to yielding a list of `Wait` objects. .. deprecated:: 4.0 Use `Futures <.Future>` instead. c C r� r> ��keys)r` r� r r r r_ I r� zWaitAll.__init__c C r� r> r� r� r r r r� L r� z WaitAll.startc s t � fdd�� jD ��S )Nc 3 s � | ] }� j �|�V qd S r> )r� r� �rf r� rz r r ri P rj z#WaitAll.is_ready.<locals>.<genexpr>)�allr� rz r rz r r� O s zWaitAll.is_readyc s � fdd�� j D �S )Nc s g | ]}� j �|��qS r )r� r� r� rz r r � <listcomp>S s z&WaitAll.get_result.<locals>.<listcomp>r� rz r rz r r� R s zWaitAll.get_resultNr� r r r r r� > s r� c sd t � � � fdd�}� fdd�}t�|�� | |dt|�i|�� W d � � S 1 s+w Y � S )a� Adapts a callback-based asynchronous function for use in coroutines. Takes a function (and optional additional arguments) and runs it with those arguments plus a ``callback`` keyword argument. The argument passed to the callback is returned as the result of the yield expression. .. versionchanged:: 4.0 ``gen.Task`` is now a function that returns a `.Future`, instead of a subclass of `YieldPoint`. It still behaves the same way when yielded. c s � � � rdS � �| ||f� dS )NFT)r{ rI )�typr% �tbr. r r �handle_exceptiond s z Task.<locals>.handle_exceptionc s � � � rd S � �| � d S r> )r{ rR r? r. r r rR j s zTask.<locals>.set_resultr= N)r r �ExceptionStackContext�_argument_adapter)r5 r' r3 r� rR r r. r �TaskV s ��r� c @ s. e Zd Zd dd�Zdd� Zdd� Zdd � ZdS ) � YieldFutureNc C s || _ |pt�� | _dS )z�Adapts a `.Future` to the `YieldPoint` interface. .. versionchanged:: 4.1 The ``io_loop`` argument is deprecated. N)r/ r rD �io_loop)r` r/ r� r r r r_ t s zYieldFuture.__init__c C sT | j �� s || _t� | _|�| j� | j�| j |�| j�� d S d | _| j j | _ d S r> ) r/ r{ r� �objectr� r� r� rE r� r- � result_fnr� r r r r� } s zYieldFuture.startc C s | j d ur | j �| j�S dS r� r� rz r r r r� � s zYieldFuture.is_readyc C s$ | j d ur| j �| j��� S | �� S r> )r� r� r� r- r� rz r r r r� � s zYieldFuture.get_resultr> )r r r r_ r� r� r� r r r r r� s s r� c C s@ t | t�rtdd� | �� D ��S t | t�r tdd� | D ��S dS )z�Returns True if ``children`` contains any YieldPoints. ``children`` may be a dict or a list, as used by `MultiYieldPoint` and `multi_future`. c s � � | ]}t |t�V qd S r> �rL r� �rf rk r r r ri � � � z'_contains_yieldpoint.<locals>.<genexpr>c s r� r> r� r� r r r ri � r� F)rL rm �anyrq rp )�childrenr r r �_contains_yieldpoint� s r� r c C s t | �r t| |d�S t| |d�S )ah Runs multiple asynchronous operations in parallel. ``children`` may either be a list or a dict whose values are yieldable objects. ``multi()`` returns a new yieldable object that resolves to a parallel structure containing their results. If ``children`` is a list, the result is a list of results in the same order; if it is a dict, the result is a dict with the same keys. That is, ``results = yield multi(list_of_futures)`` is equivalent to:: results = [] for future in list_of_futures: results.append(yield future) If any children raise exceptions, ``multi()`` will raise the first one. All others will be logged, unless they are of types contained in the ``quiet_exceptions`` argument. If any of the inputs are `YieldPoints <YieldPoint>`, the returned yieldable object is a `YieldPoint`. Otherwise, returns a `.Future`. This means that the result of `multi` can be used in a native coroutine if and only if all of its children can be. In a ``yield``-based coroutine, it is not normally necessary to call this function directly, since the coroutine runner will do it automatically when a list or dict is yielded. However, it is necessary in ``await``-based coroutines, or to pass the ``quiet_exceptions`` argument. This function is available under the names ``multi()`` and ``Multi()`` for historical reasons. .. versionchanged:: 4.2 If multiple yieldables fail, any exceptions after the first (which is raised) will be logged. Added the ``quiet_exceptions`` argument to suppress this logging for selected exception types. .. versionchanged:: 4.3 Replaced the class ``Multi`` and the function ``multi_future`` with a unified function ``multi``. Added support for yieldables other than `YieldPoint` and `.Future`. ��quiet_exceptions)r� �MultiYieldPoint� multi_future)r� r� r r r �multi� s . r� c @ s2 e Zd ZdZd dd�Zdd� Zdd� Zd d � Zd S ) r� a� Runs multiple asynchronous operations in parallel. This class is similar to `multi`, but it always creates a stack context even when no children require it. It is not compatible with native coroutines. .. versionchanged:: 4.2 If multiple ``YieldPoints`` fail, any exceptions after the first (which is raised) will be logged. Added the ``quiet_exceptions`` argument to suppress this logging for selected exception types. .. versionchanged:: 4.3 Renamed from ``Multi`` to ``MultiYieldPoint``. The name ``Multi`` remains as an alias for the equivalent `multi` function. .. deprecated:: 4.3 Use `multi` instead. r c C s� d | _ t|t�rt|� � �| _ |�� }g | _|D ]}t|t�s#t|�}t|�r+t |�}| j� |� qt dd� | jD ��s>J �t | j�| _ || _d S )Nc s r� r> r� r� r r r ri � r� z+MultiYieldPoint.__init__.<locals>.<genexpr>)r� rL rm rp rq r� r� �convert_yieldedr r� r~ r� �set�unfinished_childrenr� )r` r� r� rk r r r r_ � s zMultiYieldPoint.__init__c C s | j D ]}|�|� qd S r> )r� r� )r` r� rk r r r r� � s �zMultiYieldPoint.startc C s* t t�dd� | j��}| j�|� | j S )Nc S s | � � S r> )r� )rk r r r rA s z*MultiYieldPoint.is_ready.<locals>.<lambda>)rp � itertools� takewhiler� �difference_update)r` �finishedr r r r� � s � zMultiYieldPoint.is_readyc C s� g }d }| j D ]3}z |�|�� � W q ty: } z |d u r#t�� }n t|| j�s0tj ddd� W Y d }~qd }~ww |d urCt |� | j d urPt t | j |��S t|�S �Nz!Multiple exceptions in yield listT�rK )r� r~ r� rH rJ rK rL r� r �errorr r� rm �ziprp )r` � result_listrK rh r) r r r r� s& ��� zMultiYieldPoint.get_resultN�r r� r r r r r� � s r� c s� t � t�rt� �� ��� �� � nd�ttt� ��� tdd� � D ��s$J �t� ��t � �� s8�� �dur5i ng � � ����fdd�}t� }� D ]}||vrW|� |� |� |� qG�S )a� Wait for multiple asynchronous futures in parallel. This function is similar to `multi`, but does not support `YieldPoints <YieldPoint>`. .. versionadded:: 4.0 .. versionchanged:: 4.2 If multiple ``Futures`` fail, any exceptions after the first (which is raised) will be logged. Added the ``quiet_exceptions`` argument to suppress this logging for selected exception types. .. deprecated:: 4.3 Use `multi` instead. Nc s s � | ]}t |�V qd S r> )r r� r r r ri 0 s � z multi_future.<locals>.<genexpr>c s� �� | � �s\g }� D ]5} z |�| �� � W q ty@ } z ��� r/t|��s.tjddd� n��t � � � W Y d }~q d }~ww ��� s^�d urU�� t t �|��� d S �� |� d S d S d S r� )�remover~ r- rH r{ rL r r� rI rJ rK rR rm r� )rh r� r) �r� r/ r� r� r� r r r= 7 s, ����� z multi_future.<locals>.callback) rL rm rp r� rq �mapr� r� r� r rR �addr1 )r� r� r= Z listeningrh r r� r r� s$ �r� c C s t | �r| S t� }|�| � |S )a Converts ``x`` into a `.Future`. If ``x`` is already a `.Future`, it is simply returned; otherwise it is wrapped in a new `.Future`. This is suitable for use as ``result = yield gen.maybe_future(f())`` when you don't know whether ``f()`` returns a `.Future` or not. .. deprecated:: 4.3 This function only handles ``Futures``, not other yieldable objects. Instead of `maybe_future`, check for the non-future result types you expect (often just ``None``), and ``yield`` anything unknown. )r r rR )r Zfutr r r � maybe_futureS s r� c s� t ���t� �t��� �du rt�� ��fdd�� � ��fdd�}��| |��t�t�r9����fdd�� �S �����fdd�� �S ) a) Wraps a `.Future` (or other yieldable object) in a timeout. Raises `TimeoutError` if the input future does not complete before ``timeout``, which may be specified in any form allowed by `.IOLoop.add_timeout` (i.e. a `datetime.timedelta` or an absolute time relative to `.IOLoop.time`) If the wrapped `.Future` fails after it has timed out, the exception will be logged unless it is of a type contained in ``quiet_exceptions`` (which may be an exception type or a sequence of types). Does not support `YieldPoint` subclasses. .. versionadded:: 4.0 .. versionchanged:: 4.1 Added the ``quiet_exceptions`` argument and the logging of unhandled exceptions. .. versionchanged:: 4.4 Added support for yieldable objects other than `.Future`. Nc s^ z| � � W d S ty. } zt|� �s#tjd| dd� W Y d }~d S W Y d }~d S d }~ww )Nz$Exception in Future %r after timeoutTr� )r- rH rL r r� )r/ r) r� r r �error_callback� s ����z$with_timeout.<locals>.error_callbackc s �� td�� ��� � d S )NZTimeout)rP r# r1 r )r� r/ r- r r �timeout_callback� s z&with_timeout.<locals>.timeout_callbackc � � � ��S r> �Zremove_timeoutr. �r� �timeout_handler r rA � � z with_timeout.<locals>.<lambda>c r� r> r� r. r� r r rA � r� ) r� r r r rD Z add_timeoutrL r1 rE )�timeoutr/ r� r� r� r )r� r/ r� r� r- r� r � with_timeouth s& � ���r� c s" t � � t�� �| � fdd�� � S )a� Return a `.Future` that resolves after the given number of seconds. When used with ``yield`` in a coroutine, this is a non-blocking analogue to `time.sleep` (which should not be used in coroutines because it is blocking):: yield gen.sleep(0.5) Note that calling this function on its own does nothing; you must wait on the `.Future` it returns (usually by yielding it). .. versionadded:: 4.1 c s � � d �S r> )rR r �rh r r rA � r� zsleep.<locals>.<lambda>)r r rD Z call_later)Zdurationr r� r �sleep� s r� ah A special object which may be yielded to allow the IOLoop to run for one iteration. This is not needed in normal use but it can be helpful in long-running coroutines that are likely to yield Futures that are ready instantly. Usage: ``yield gen.moment`` .. versionadded:: 4.0 .. deprecated:: 4.5 ``yield None`` is now equivalent to ``yield gen.moment``. c @ s` e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dd� Z dS )rS z�Internal implementation of `tornado.gen.engine`. Maintains information about pending callbacks and their results. The results of the generator are stored in ``result_future`` (a `.TracebackFuture`) c C sl || _ || _t| _d | _d | _d | _d| _d| _d| _ t � � | _ d | _ | �|�r4d } }}| �� d S d S r )�gen� result_future� _null_futurer/ � yield_point�pending_callbacks�results�runningr� � had_exceptionr rD r� �stack_context_deactivate� handle_yield�run)r` r� r� Z first_yieldedr r r r_ � s �zRunner.__init__c C s@ | j du r t� | _ i | _|| j v rtd|f ��| j �|� dS )z&Adds ``key`` to the list of callbacks.Nzkey %r is already pending)r� r� r� r r� r� r r r r� � s zRunner.register_callbackc C s, | j du s || j vrtd|f ��|| jv S )z2Returns true if a result is available for ``key``.Nzkey %r is not pending)r� r r� r� r r r r� � s zRunner.is_readyc C sh || j |< | jdur0| j�� r2z | j�| j�� � W n | j�t�� � Y d| _| � � dS dS dS )zASets the result for ``key`` and attempts to resume the generator.N) r� r� r� r/ rR r� rI rJ rK r� )r` r� r- r r r rR � s �zRunner.set_resultc C s | j �|� | j�|�S )z2Returns the result for ``key`` and unregisters it.)r� r� r� rC r� r r r r� s zRunner.pop_resultc C s� | j s| jrdS z�d| _ | j}|�� sW d| _ dS d| _zHtjj}d}z|�� }W n ty: d| _ t � � }Y nw d}|durOz | j j |� }W d}n d}w | j �|�}tjj|urd| j � t�d�� W n] ttfy� } z-d| _t| _| jr�| j s�td| j ��| j�t|�� d| _| �� W Y d}~W d| _ dS d}~w ty� d| _t| _| j�t � � � d| _| �� Y W d| _ dS w | �|�s�W d| _ dS d}q d| _ w )zkStarts or resumes the generator, running until it reaches a yield point that is not ready. NTFrB z)finished without waiting for callbacks %r)r� r� r/ r{ r rM rN r- rH r� rJ rK r� �throw�sendrQ rG rF r� r� r r� rR r* �_deactivate_stack_contextrI r� )r` r/ rU rK r% rV r) r r r r� s| 6� � ��� �� � � � ��9z Runner.runc s t ��rt���t�t�rJt� � _� �fdd��� jd u rFt�� j ��}|� _� �fdd�}� j � |� W d � dS 1 s@w Y n!�� n zt ��� _W n t yf t� � _� j�t�� � Y nw � j�� rq� jtu r�� fdd�}� j �� j|� dS dS ) Nc sb z�� � � ��� r� j���� � W d S �� _W d S ty0 t� � _� j�t � � � Y d S w r> ) r� r� r/ rR r� r� rH r rI rJ rK r )r` rV r r �start_yield_point\ s � �z.Runner.handle_yield.<locals>.start_yield_pointc s �� � � � d S r> �r� r )r` r� r r �cbo s z Runner.handle_yield.<locals>.cbFc s d } � � � d S r> r� r� rz r r �inner~ s z"Runner.handle_yield.<locals>.innerT)r� r� rL r� r r/ r� r r� r� r� Z add_callbackr� r! rI rJ rK r{ �momentrE )r` rV Z deactivater� r� r )r` r� rV r r� Q s: � "� � �zRunner.handle_yieldc C s t �tt�| j|���S r> )r r2 r� r8 �partialrR r� r r r r� � s �zRunner.result_callbackc C s6 | j s| jst� | _| j�|||f� | �� dS dS )NTF)r� r� r r/ rI r� )r` r� r% r� r r r r� � s zRunner.handle_exceptionc C s | j d ur| � � d | _ d S d S r> )r� rz r r r r� � s �z Runner._deactivate_stack_contextN)r r r r$ r_ r� r� rR r� r� r� r� r� r� r r r r rS � s C6 rS � Argumentsr' r3 c s � fdd�}|S )a Returns a function that when invoked runs ``callback`` with one arg. If the function returned by this function is called with exactly one argument, that argument is passed to ``callback``. Otherwise the args tuple and kwargs dict are wrapped in an `Arguments` object. c sB |st | �dkr� t| |�� d S | r� | d � d S � d � d S )N� r )�lenr� )r' r3 r@ r r r6 � s z"_argument_adapter.<locals>.wrapperr )r= r6 r r@ r r� � s r� )� r� z� @coroutine def _wrap_awaitable(x): if hasattr(x, '__await__'): x = x.__await__() return (yield from x) c c s� � t | d�r | �� }nt| �}zt|�}W n ty. } z t|�}W Y d }~t|��d }~ww z|V }W nj tyV } zz|j}W n tyL Y |�w |� |�d }~w t y� } z>t � � }z|j }W n tyo |�w z||� }W n ty� } zt|�}W Y d }~W Y d }~t|��d }~ww W Y d }~n/d }~ww z|d u r�t|�}n|� |�}W n ty� } z t|�}W Y d }~t|��d }~ww q0)N� __await__)rW r� �iterrO rG r* � GeneratorExit�closer& � BaseExceptionrJ rK r� r� rF )r Z_iZ_y�_eZ_rZ_s�_mZ_xr r r �_wrap_awaitable� sl � "�� �� � �� ��� � ���r� c C sL | du rt S t| ttf�rt| �S t| �r| S t| �r t| �S td| f ��)a� Convert a yielded object into a `.Future`. The default implementation accepts lists, dictionaries, and Futures. If the `~functools.singledispatch` library is available, this function may be extended to support additional types. For example:: @convert_yielded.register(asyncio.Future) def _(asyncio_future): return tornado.platform.asyncio.to_tornado_future(asyncio_future) .. versionadded:: 4.1 Nzyielded unknown object %r) r� rL rp rm r� r r r� r! )rV r r r r� � s r� )Tr� )Nr )Ur$ Z __future__r r r rs r8 r� �osrJ �textwraprX �weakrefZsalt.ext.tornado�extZtornadoZsalt.ext.tornado.concurrentr r r r Zsalt.ext.tornado.ioloopr Zsalt.ext.tornado.logr r Zsalt.ext.tornado.utilr r r � ImportError�environ�collections.abcr r Zsalt.ext.backports_abc�inspectr r� Z __builtin__rH r r r r! r" r# r* r: r< �WeakKeyDictionaryrT r7 r] rF r� rd r� r� r� r� r� r� r� r� ZMultir� r� r� r� r� r� rR r� rS � namedtupler� r� � version_info�exec�dedentr� r� Z!salt.ext.tornado.platform.asyncio�saltr r r r �<module> s� M �� � � �� � #7H v ! 4 B9 A � J - ��
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