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Arguments:
id (str): See :attr:`id`.
backend (Backend): See :attr:`backend`.
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|| _ dS )z%Enable/disable task result retrieval.N)r6 )r7 �valuer r r r; m s Fc C s | j j| |d� | j�||�S )Nr, )r2 �add_pending_resultr4 �then�r7 �callbackZon_errorr- r r r r> r s zAsyncResult.thenc C s | j �| � |S r �r2 �remove_pending_result�r7 �resultr r r r3 v s zAsyncResult._on_fulfilledc C s | j }| j|o|�� fd fS r )r+ r1 �as_tuple)r7 r+ r r r rE z s zAsyncResult.as_tuplec C s0 g }| j }|�| j� |dur,|�|�� � |S )z Return as a list of task IDs.N)r+ �appendr1 �extend�as_list)r7 �resultsr+ r r r rH ~ s zAsyncResult.as_listc C s( d| _ | jr| j�� | j�| j� dS )z/Forget the result of this task and its parents.N)r5 r+ �forgetr2 r1 r: r r r rJ � s
zAsyncResult.forgetc C s | j jj| j|||||d� dS )a� Send revoke signal to all workers.
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task, *must* ignore it.
Arguments:
terminate (bool): Also terminate the process currently working
on the task (if any).
signal (str): Name of signal to send to process if terminate.
Default is TERM.
wait (bool): Wait for replies from workers.
The ``timeout`` argument specifies the seconds to wait.
Disabled by default.
timeout (float): Time in seconds to wait for replies when
``wait`` is enabled.
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connection� terminate�signal�reply�timeoutN)r0 �control�revoker1 �r7 rL rM rN �waitrP r r r rR � s �zAsyncResult.revokec C s | j jj||||||d� dS )a7 Send revoke signal to all workers only for tasks with matching headers values.
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task, *must* ignore it.
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Arguments:
headers (dict[str, Union(str, list)]): Headers to match when revoking tasks.
terminate (bool): Also terminate the process currently working
on the task (if any).
signal (str): Name of signal to send to process if terminate.
Default is TERM.
wait (bool): Wait for replies from workers.
The ``timeout`` argument specifies the seconds to wait.
Disabled by default.
timeout (float): Time in seconds to wait for replies when
``wait`` is enabled.
rK N)r0 rQ �revoke_by_stamped_headers)r7 �headersrL rM rN rT rP r r r rU � s �z%AsyncResult.revoke_by_stamped_headersT� �?c
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| � | j j | ||| ||||d�S )a� Wait until task is ready, and return its result.
Warning:
Waiting for tasks within a task may lead to deadlocks.
Please read :ref:`task-synchronous-subtasks`.
Warning:
Backends use resources to store and transmit results. To ensure
that resources are released, you must eventually call
:meth:`~@AsyncResult.get` or :meth:`~@AsyncResult.forget` on
EVERY :class:`~@AsyncResult` instance returned after calling
a task.
Arguments:
timeout (float): How long to wait, in seconds, before the
operation times out. This is the setting for the publisher
(celery client) and is different from `timeout` parameter of
`@app.task`, which is the setting for the worker. The task
isn't terminated even if timeout occurs.
propagate (bool): Re-raise exception if the task failed.
interval (float): Time to wait (in seconds) before retrying to
retrieve the result. Note that this does not have any effect
when using the RPC/redis result store backends, as they don't
use polling.
no_ack (bool): Enable amqp no ack (automatically acknowledge
message). If this is :const:`False` then the message will
**not be acked**.
follow_parents (bool): Re-raise any exception raised by
parent tasks.
disable_sync_subtasks (bool): Disable tasks to wait for sub tasks
this is the default configuration. CAUTION do not enable this
unless you must.
Raises:
celery.exceptions.TimeoutError: if `timeout` isn't
:const:`None` and the result does not arrive within
`timeout` seconds.
Exception: If the remote call raised an exception then that
exception will be re-raised in the caller process.
NTr, )r@ )rP �interval� on_interval�no_ack� propagater@ �
on_message) r; r r r+ �_maybe_reraise_parent_errorr> r5 � maybe_throwrD r2 r= Zwait_for_pending)
r7 rP r[ rX rZ Zfollow_parentsr@ r\ rY �disable_sync_subtasks�EXCEPTION_STATES�PROPAGATE_STATESZ _on_intervalr r r �get� s0 -
�zAsyncResult.getc C s" t t| �� ��D ] }|�� qd S r )�reversed�list�_parentsr^ �r7 �noder r r r] s z'AsyncResult._maybe_reraise_parent_errorc c s | j }|r|V |j }qd S r �r+ rf r r r re
s zAsyncResult._parentsc k s0 | j |d�D ] \}}||jf i |��fV q dS )a� Collect results as they return.
Iterator, like :meth:`get` will wait for the task to complete,
but will also follow :class:`AsyncResult` and :class:`ResultSet`
returned by the task, yielding ``(result, value)`` tuples for each
result in the tree.
An example would be having the following tasks:
.. code-block:: python
from celery import group
from proj.celery import app
@app.task(trail=True)
def A(how_many):
return group(B.s(i) for i in range(how_many))()
@app.task(trail=True)
def B(i):
return pow2.delay(i)
@app.task(trail=True)
def pow2(i):
return i ** 2
.. code-block:: pycon
>>> from celery.result import ResultBase
>>> from proj.tasks import A
>>> result = A.delay(10)
>>> [v for v in result.collect()
... if not isinstance(v, (ResultBase, tuple))]
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
Note:
The ``Task.trail`` option must be enabled
so that the list of children is stored in ``result.children``.
This is the default but enabled explicitly for illustration.
Yields:
Tuple[AsyncResult, Any]: tuples containing the result instance
of the child task, and the return value of that task.
�� intermediateN��iterdepsrb )r7 rj �kwargs�_�Rr r r �collect s .zAsyncResult.collectc C s" d }| � � D ]\}}|�� }q |S r rk )r7 r< rn ro r r r �get_leafA s
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zAsyncResult.iterdepsc C s | j | jjv S )z�Return :const:`True` if the task has executed.
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)�stater2 � READY_STATESr: r r r ry U s zAsyncResult.readyc C s | j tjkS )z7Return :const:`True` if the task executed successfully.)r| r �SUCCESSr: r r r �
successful] s zAsyncResult.successfulc C s | j tjkS )z(Return :const:`True` if the task failed.)r| r �FAILUREr: r r r �faileda s zAsyncResult.failedc O s | j j|i |�� d S r )r4 �throw�r7 �argsrm r r r r� e s zAsyncResult.throwc C sn | j d u r| �� n| j }|d |d |�d� }}}|tjv rV|rV| �|| �|�� |d urj|| j|� |S )N�statusrD � traceback)r5 �_get_task_metarb r ra r� �_to_remote_tracebackr1 )r7 r[ r@ �cacher| r< �tbr r r r^ h s �
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t | j�S �z`str(self) -> self.id`.��strr1 r: r r r �__str__� s zAsyncResult.__str__c C s
t | j�S �z `hash(self) -> hash(self.id)`.��hashr1 r: r r r �__hash__� s zAsyncResult.__hash__c C s dt | �j� d| j� d�S )N�<�: �>)r/ r' r1 r: r r r �__repr__� s zAsyncResult.__repr__c C s. t |t�r|j| jkS t |t�r*|| jkS tS r )�
isinstancer r1 r� �NotImplemented�r7 �otherr r r �__eq__� s
zAsyncResult.__eq__c C s | � | j| jd | j| j�S r )� __class__r1 r2 r0 r+ r: r r r �__copy__� s �zAsyncResult.__copy__c C s | j | �� fS r �r� �__reduce_args__r: r r r �
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zAsyncResult.__del__c C s | � � S r )r� r: r r r r� � s zAsyncResult.graphc C s | j jS r )r2 �supports_native_joinr: r r r r� � s z AsyncResult.supports_native_joinc C s | � � �d�S )Nrz �r� rb r: r r r rz � s zAsyncResult.childrenc C s: |r6|d }|t jv r6| �| j�|��}| �| � |S |S )Nr� )r r} �
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_iter_meta� s zAsyncResult._iter_metac s. |� d�}|r$� fdd�|D �|d< |� _|S )Nrz c s g | ]}t |� j��qS r )r r0 rr r: r r �
<listcomp>� s z*AsyncResult._set_cache.<locals>.<listcomp>)rb r5 )r7 r� rz r r: r r� � s
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zAsyncResult._set_cachec C s | � � d S )z�Task return value.
Note:
When the task has been executed, this contains the return value.
If the task raised an exception, this will be the exception
instance.
rD �r� r: r r r rD � s zAsyncResult.resultc C s | � � �d�S )z#Get the traceback of a failed task.r� r� r: r r r r� � s zAsyncResult.tracebackc C s | � � d S )a� The tasks current state.
Possible values includes:
*PENDING*
The task is waiting for execution.
*STARTED*
The task has been started.
*RETRY*
The task is to be retried, possibly because of failure.
*FAILURE*
The task raised an exception, or has exceeded the retry limit.
The :attr:`result` attribute then contains the
exception raised by the task.
*SUCCESS*
The task executed successfully. The :attr:`result` attribute
then contains the tasks return value.
r� r� r: r r r r| � s zAsyncResult.statec C s | j S )z Compat. alias to :attr:`id`.�r1 r: r r r �task_id� s zAsyncResult.task_idc C s
|| _ d S r r� )r7 r1 r r r r� � s c C s | � � �d�S )N�namer� r: r r r r� s zAsyncResult.namec C s | � � �d�S )Nr� r� r: r r r r� s zAsyncResult.argsc C s | � � �d�S )Nrm r� r: r r r rm s zAsyncResult.kwargsc C s | � � �d�S )N�workerr� r: r r r r� s zAsyncResult.workerc C s* | � � �d�}|r&t|tj�s&t|�S |S )zUTC date and time.� date_done)r� rb r� �datetimer )r7 r� r r r r� s zAsyncResult.date_donec C s | � � �d�S )N�retriesr� r: r r r r� s zAsyncResult.retriesc C s | � � �d�S )N�queuer� r: r r r r� s zAsyncResult.queue)NNNN)NF)NFNFN)NFNFN)F)F)TN)FN)Br' r( r) r* r0 r r1 r2 r8 �propertyr; �setterr> r3 rE rH rJ rR rU r r` ra rb rT r] re rp rq rl ry r r� r� r^ �
maybe_reraiser� r� r� r� r� r� r� r� r� r� r r� r� rz r� r� r� r� rD �infor� r| r� r� r� r� rm r� r� r� r� r r r r r D s� �
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dd� ZdDdd�ZeZdd� Zdd� Zd d � Zd d � ZdEd!d"�Zd#d$� Zd%d&� ZdFd(d)�ZdGd*d+�ZdHd,d-�ZdId.d/�ZdJd0d1�Z d2d3� Z d4d5� Z d6d7� Z d8d9� Z d:d;� Z!e"d<d=� �Z#e"d>d?� �Z$e$j%d@d?� �Z$e"dAdB� �Z&dS )Kr zpA collection of results.
Arguments:
results (Sequence[AsyncResult]): List of result instances.
Nc K sL || _ || _tt| �fd�| _|p(t|�| _| jrH| j�t| jdd�� d S )N)r� Tr, ) �_apprI r r r4 r �_on_fullr> � _on_ready)r7 rI r0 Z
ready_barrierrm r r r r8 1 s zResultSet.__init__c C s, || j vr(| j �|� | jr(| j�|� dS )zvAdd :class:`AsyncResult` as a new member of the set.
Does nothing if the result is already a member.
N)rI rF r� �addrC r r r r� 9 s
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ResultSet.addc C s | j jr| �� d S r )r2 �is_asyncr4 r: r r r r� C s zResultSet._on_readyc C sF t |t�r| j�|�}z| j�|� W n ty@ t|��Y n0 dS )z~Remove result from the set; it must be a member.
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N)r� r� r0 r rI �remover. �KeyErrorrC r r r r� G s
zResultSet.removec C s& z| � |� W n ty Y n0 dS )zbRemove result from the set if it is a member.
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N)r� r� rC r r r �discardT s zResultSet.discardc s � j �� fdd�|D �� dS )z Extend from iterable of results.c 3 s | ]}|� j vr|V qd S r �rI �rs �rr: r r rv ` rw z#ResultSet.update.<locals>.<genexpr>N)rI rG )r7 rI r r: r �update^ s zResultSet.updatec C s g | j dd�< dS )z!Remove all results from this set.Nr� r: r r r �clearb s zResultSet.clearc C s t dd� | jD ��S )z�Return true if all tasks successful.
Returns:
bool: true if all of the tasks finished
successfully (i.e. didn't raise an exception).
c s s | ]}|� � V qd S r )r �rs rD r r r rv m rw z'ResultSet.successful.<locals>.<genexpr>��allrI r: r r r r f s zResultSet.successfulc C s t dd� | jD ��S )z�Return true if any of the tasks failed.
Returns:
bool: true if one of the tasks failed.
(i.e., raised an exception)
c s s | ]}|� � V qd S r )r� r� r r r rv v rw z#ResultSet.failed.<locals>.<genexpr>��anyrI r: r r r r� o s zResultSet.failedTc C s | j D ]}|j||d� qd S )N)r@ r[ )rI r^ )r7 r@ r[ rD r r r r^ x s
zResultSet.maybe_throwc C s t dd� | jD ��S )z�Return true if any of the tasks are incomplete.
Returns:
bool: true if one of the tasks are still
waiting for execution.
c s s | ]}|� � V qd S r �ry r� r r r rv � rw z$ResultSet.waiting.<locals>.<genexpr>r� r: r r r �waiting} s zResultSet.waitingc C s t dd� | jD ��S )z�Did all of the tasks complete? (either by success of failure).
Returns:
bool: true if all of the tasks have been executed.
c s s | ]}|� � V qd S r r� r� r r r rv � rw z"ResultSet.ready.<locals>.<genexpr>r� r: r r r ry � s zResultSet.readyc C s t dd� | jD ��S )a Task completion count.
Note that `complete` means `successful` in this context. In other words, the
return value of this method is the number of ``successful`` tasks.
Returns:
int: the number of complete (i.e. successful) tasks.
c s s | ]}t |�� �V qd S r )�intr r� r r r rv � rw z,ResultSet.completed_count.<locals>.<genexpr>)�sumrI r: r r r �completed_count� s zResultSet.completed_countc C s | j D ] }|�� qdS )z?Forget about (and possible remove the result of) all the tasks.N)rI rJ rC r r r rJ � s
zResultSet.forgetFc C s* | j jjdd� | jD �|||||d� dS )a[ Send revoke signal to all workers for all tasks in the set.
Arguments:
terminate (bool): Also terminate the process currently working
on the task (if any).
signal (str): Name of signal to send to process if terminate.
Default is TERM.
wait (bool): Wait for replies from worker.
The ``timeout`` argument specifies the number of seconds
to wait. Disabled by default.
timeout (float): Time in seconds to wait for replies when
the ``wait`` argument is enabled.
c S s g | ]
}|j �qS r r� r� r r r r� � rw z$ResultSet.revoke.<locals>.<listcomp>)rL rP rM rN rO N)r0 rQ rR rI rS r r r rR � s �zResultSet.revokec C s
t | j�S r )r� rI r: r r r �__iter__� s zResultSet.__iter__c C s
| j | S )z`res[i] -> res.results[i]`.r� )r7 �indexr r r � __getitem__� s zResultSet.__getitem__rW c
C s& | j r | jn| j||||||||d�S )z�See :meth:`join`.
This is here for API compatibility with :class:`AsyncResult`,
in addition it uses :meth:`join_native` if available for the
current result backend.
)rP r[ rX r@ rZ r\ r_ rY )r� � join_native�join) r7 rP r[ rX r@ rZ r\ r_ rY r r r rb � s �z
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� q0| S )a� Gather the results of all tasks as a list in order.
Note:
This can be an expensive operation for result store
backends that must resort to polling (e.g., database).
You should consider using :meth:`join_native` if your backend
supports it.
Warning:
Waiting for tasks within a task may lead to deadlocks.
Please see :ref:`task-synchronous-subtasks`.
Arguments:
timeout (float): The number of seconds to wait for results
before the operation times out.
propagate (bool): If any of the tasks raises an exception,
the exception will be re-raised when this flag is set.
interval (float): Time to wait (in seconds) before retrying to
retrieve a result from the set. Note that this does not have
any effect when using the amqp result store backend,
as it does not use polling.
callback (Callable): Optional callback to be called for every
result received. Must have signature ``(task_id, value)``
No results will be returned by this function if a callback
is specified. The order of results is also arbitrary when a
callback is used. To get access to the result object for
a particular id you'll have to generate an index first:
``index = {r.id: r for r in gres.results.values()}``
Or you can create new result objects on the fly:
``result = app.AsyncResult(task_id)`` (both will
take advantage of the backend cache anyway).
no_ack (bool): Automatic message acknowledgment (Note that if this
is set to :const:`False` then the messages
*will not be acknowledged*).
disable_sync_subtasks (bool): Disable tasks to wait for sub tasks
this is the default configuration. CAUTION do not enable this
unless you must.
Raises:
celery.exceptions.TimeoutError: if ``timeout`` isn't
:const:`None` and the operation takes longer than ``timeout``
seconds.
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.. versionadded:: 2.2
Note that this does not support collecting the results
for different task types using different backends.
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.. versionadded:: 2.2
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