B !nj.U@sddlmZddlZddlZddlZddlZddlmZmZddl m Z ddl m Z ddl mZddlmZed ZGd d d ZGd d d eZd d gZdS)) annotationsN)ABCabstractmethod)Lock) TracebackType)Any)TimeoutZfilelockc@sBeZdZdZdddddZdddd Zd d d dd ddZdS)AcquireReturnProxyzDA context aware object that will release the lock file when exiting. BaseFileLockNone)lockreturncCs ||_dS)N)r )selfr r>/opt/alt/python37/lib/python3.7/site-packages/filelock/_api.py__init__szAcquireReturnProxy.__init__)rcCs|jS)N)r )rrrr __enter__szAcquireReturnProxy.__enter__ztype[BaseException] | NonezBaseException | NonezTracebackType | None)exc_type exc_value tracebackrcCs|jdS)N)r release)rrrrrrr__exit__szAcquireReturnProxy.__exit__N)__name__ __module__ __qualname____doc__rrrrrrrr sr c@seZdZdZd/ddddddZed d d d Zedd d dZejdddddZe dd ddZ e dd ddZ edd ddZ d0ddddddddd Z d1ddd"d#d$Zdd d%d&Zd'd(d)dd*d+d,Zdd d-d.ZdS)2r z+Abstract base class for a file lock object.zstr | os.PathLike[Any]floatr ) lock_filetimeoutrcCs*t||_d|_||_t|_d|_dS)a Create a new lock object. :param lock_file: path to the file :param timeout: default timeout when acquiring the lock. It will be used as fallback value in the acquire method, if no timeout value (``None``) is given. If you want to disable the timeout, set it to a negative value. A timeout of 0 means, that there is exactly one attempt to acquire the file lock. Nr)osfspath _lock_file _lock_file_fdr r _thread_lock _lock_counter)rrr rrrr)s zBaseFileLock.__init__str)rcCs|jS)z:return: path to the lock file)r#)rrrrrCszBaseFileLock.lock_filecCs|jS)zU :return: the default timeout value .. versionadded:: 2.0.0 )_timeout)rrrrr HszBaseFileLock.timeoutz float | str)valuercCst||_dS)zX Change the default timeout value. :param value: the new value N)rr()rr)rrrr QscCstdS)zbIf the file lock could be acquired, self._lock_file_fd holds the file descriptor of the lock file.N)NotImplementedError)rrrr_acquireZszBaseFileLock._acquirecCstdS)z6Releases the lock and sets self._lock_file_fd to None.N)r*)rrrr_release_szBaseFileLock._releaseboolcCs |jdk S)z :return: A boolean indicating if the lock file is holding the lock currently. .. versionchanged:: 2.0.0 This was previously a method and is now a property. N)r$)rrrr is_lockedds zBaseFileLock.is_lockedN皙?)poll_intervallz float | Noner )r poll_intervalr0rc CsT|dkr|j}|dk r.d}tj|tdd|}|j|jd7_WdQRXt|}|j}t}yx|j"|j st d||| WdQRX|j rt d||Pqhd|krt|krnnt d ||t |jqhd }t ||||t|qhWWn<tk rH|jtd|jd|_WdQRXYnXt|d S) az Try to acquire the file lock. :param timeout: maximum wait time for acquiring the lock, ``None`` means use the default :attr:`~timeout` is and if ``timeout < 0``, there is no timeout and this method will block until the lock could be acquired :param poll_interval: interval of trying to acquire the lock file :param poll_intervall: deprecated, kept for backwards compatibility, use ``poll_interval`` instead :raises Timeout: if fails to acquire lock within the timeout period :return: a context object that will unlock the file when the context is exited .. code-block:: python # You can use this method in the context manager (recommended) with lock.acquire(): pass # Or use an equivalent try-finally construct: lock.acquire() try: pass finally: lock.release() .. versionchanged:: 2.0.0 This method returns now a *proxy* object instead of *self*, so that it can be used in a with statement without side effects. Nz+use poll_interval instead of poll_intervall) stacklevelrz#Attempting to acquire lock %s on %szLock %s acquired on %srz"Timeout on acquiring lock %s on %sz2Lock %s not acquired on %s, waiting %s seconds ...)r )r warningswarnDeprecationWarningr%r&idr#timer._LOGGERdebugr+r sleep BaseExceptionmaxr )rr r1r0msglock_id lock_filenameZ start_timerrracquireps>%  zBaseFileLock.acquireF)forcerc Csr|jb|jrd|jd8_|jdks*|rdt||j}}td|||d|_td||WdQRXdS)a* Releases the file lock. Please note, that the lock is only completely released, if the lock counter is 0. Also note, that the lock file itself is not automatically deleted. :param force: If true, the lock counter is ignored and the lock is released in every case/ rrz#Attempting to release lock %s on %szLock %s released on %sN)r%r.r&r7r#r9r:r,)rrBr?r@rrrrszBaseFileLock.releasecCs ||S)zE Acquire the lock. :return: the lock object )rA)rrrrrszBaseFileLock.__enter__ztype[BaseException] | NonezBaseException | NonezTracebackType | None)rrrrcCs |dS)z Release the lock. :param exc_type: the exception type if raised :param exc_value: the exception value if raised :param traceback: the exception traceback if raised N)r)rrrrrrrrs zBaseFileLock.__exit__cCs|jdddS)z'Called when the lock object is deleted.T)rBN)r)rrrr__del__szBaseFileLock.__del__)r)Nr/)F)rrrrrpropertyrr setterrr+r,r.rArrrrCrrrrr &s  F r ) __future__rloggingr!r8r4abcrr threadingrtypesrtypingr_errorr getLoggerr9r r __all__rrrrs      H