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r r r r ? s z BaseTransferMeta.transfer_idc C s t d��dS )z.A dictionary that requesters can store data in� user_contextN)r )r
r r r r D s z BaseTransferMeta.user_contextN)r r r r r r r r r r r r 9 s r c @ sB e Zd Zddd�Zedd� �Zdd� Zdd � Zd
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� Z dS )�TransferFutureNc C s0 || _ |dkrt� | _ || _|dkr,t� | _dS )a� The future associated to a submitted transfer request
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r r r r � s zTransferMeta.call_argsc C s | j S )z The unique id of the transfer)r' )r
r r r r � s zTransferMeta.transfer_idc C s | j S )z)The size of the transfer request if known)r( )r
r r r �size� s zTransferMeta.sizec C s | j S )z.A dictionary that requesters can store data in)r) )r
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* running - Is inprogress. In-progress as of now means that
the SubmissionTask that runs the transfer is being executed. So
there is no guarantee any transfer requests had been made to
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* failed - An exception other than CancelledError was thrown
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process. So if a result is being set for this final task, the transfer
succeeded even if something came a long and canceled the transfer
on the final task.
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r r r �set_status_to_running! s z)TransferCoordinator.set_status_to_runningc C s6 | j �& | j� r"td| j|f ��|| _W d Q R X d S )Nz=Unable to transition from done state %s to non-done state %s.)r8 r � RuntimeErrorrA r- )r
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r r r r H s zTransferCoordinator.donec C s" | j � | jj|� W dQ R X dS )z6Adds a future to be associated with the TransferFutureN)r9 r1 �add)r
rX r r r rS P s z)TransferCoordinator.add_associated_futurec C s" | j � | jj|� W dQ R X dS )z4Removes a future's association to the TransferFutureN)r9 r1 �remove)r
rX r r r rU U s z,TransferCoordinator.remove_associated_futurec O s. | j � | jjt|f|�|�� W dQ R X dS )z7Add a done callback to be invoked when transfer is doneN)r: r3 �appendr )r
�function�args�kwargsr r r rT Z s z%TransferCoordinator.add_done_callbackc O s. | j � | jjt|f|�|�� W dQ R X dS )z$Adds a callback to call upon failureN)r; r2 r[ r )r
r\ r] r^ r r r �add_failure_cleanupa s z'TransferCoordinator.add_failure_cleanupc C s( | j dkr| j� | jj� | j� dS )aM Announce that future is done running and run associated callbacks
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being executed. A size of None or 0 means that the executor will
have no bound in terms of the number of inflight futures.
:params max_num_threads: The maximum number of threads the executor
uses.
:type tag_semaphores: dict
:params tag_semaphores: A dictionary where the key is the name of the
tag and the value is the semaphore to use when limiting the
number of tasks the executor is processing at a time.
:type executor_cls: BaseExecutor
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is used to override which semaphore to use.
:type block: boolean
:param block: True if to wait till it is possible to submit a task.
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