ó %_[c@s»dZddlZddlZddlZddlZyddlZWnek r_dZnXyddlZWnek r‰dZnXyddl Z Wnek r³dZ nXye Wne k rÕe Z nXddddddgZ d ZejeƒZde fd „ƒYZdefd „ƒYZdefd „ƒYZdefd „ƒYZdefd„ƒYZdZer†eZn1e r•eZn"eZedk r·ejdƒndS(sD A platform independent file lock that supports the with-statement. iÿÿÿÿNtTimeoutt BaseFileLocktWindowsFileLockt UnixFileLockt SoftFileLocktFileLocks2.0.8cBs eZdZd„Zd„ZRS(sN Raised when the lock could not be acquired in *timeout* seconds. cCs ||_dS(s N(t lock_filetNone(tselfR((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyt__init__Qs cCsdj|jƒ}|S(Ns)The file lock '{}' could not be acquired.(tformatR(Rttemp((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyt__str__Xs (t__name__t __module__t__doc__R R (((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyRKs cBs¡eZdZdd„Zed„ƒZed„ƒZejd„ƒZd„Zd„Z ed„ƒZ dd d „Z e d „Zd „Zd „Zd„ZRS(s3 Implements the base class of a file lock. iÿÿÿÿcCs7||_d|_||_tjƒ|_d|_dS(s iN(t _lock_fileRt _lock_file_fdttimeoutt threadingtLockt _thread_lockt _lock_counter(RRR((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR es     cCs|jS(s, The path to the lock file. (R(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR}scCs|jS(s~ You can set a default timeout for the filelock. 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. .. versionadded:: 2.0.0 (t_timeout(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR„scCst|ƒ|_dS(s N(tfloatRR(Rtvalue((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR”scCs tƒ‚dS(s˜ Platform dependent. If the file lock could be acquired, self._lock_file_fd holds the file descriptor of the lock file. N(tNotImplementedError(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyt_acquirežscCs tƒ‚dS(sH Releases the lock and sets self._lock_file_fd to None. N(R(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyt_release¦scCs |jdk S(sž True, if the object holds the file lock. .. versionchanged:: 2.0.0 This was previously a method and is now a property. N(RR(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyt is_locked¯s gš™™™™™©?c Cs…|dkr|j}n|j|jd7_WdQXyõtjƒ}xâtr*t|ƒ}|j}|j.|js—t j d||ƒ|j ƒnWdQX|jr½t j d||ƒPqI|dkrtjƒ||krt j d||ƒt |jƒ‚qIt j d|||ƒtj|ƒqIWWn3|jtd|jdƒ|_WdQX‚nXdtfd „ƒY}|d |ƒS( sY Acquires the file lock or fails with a :exc:`Timeout` error. .. code-block:: python # You can use this method in the context manager (recommended) with lock.acquire(): pass # Or you use an equal try-finally construct: lock.acquire() try: pass finally: lock.release() :arg float timeout: The maximum time waited for the file lock. If ``timeout <= 0``, there is no timeout and this method will block until the lock could be acquired. If ``timeout`` is None, the default :attr:`~timeout` is used. :arg float poll_intervall: We check once in *poll_intervall* seconds if we can acquire the file lock. :raises Timeout: if the lock could not be acquired in *timeout* seconds. .. 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. iNs#Attempting to acquire lock %s on %ssLock %s acquired on %sis!Timeout on aquiring lock %s on %ss2Lock %s not acquired on %s, waiting %s seconds ...t ReturnProxycBs#eZd„Zd„Zd„ZRS(cSs ||_dS(N(tlockR(RR((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR s cSs|jS(N(R(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyt __enter__scSs|jjƒdS(N(RtreleaseR(Rtexc_typet exc_valuet traceback((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyt__exit__s (R RR R R%(((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyRs  R(RRRRttimetTruetidRRtloggertdebugRtinfoRtsleeptmaxtobject(RRtpoll_intervallt start_timetlock_idt lock_filenameR((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pytacquireºsD$           "   cCs•|j†|jr‹|jd8_|jdks7|r‹t|ƒ}|j}tjd||ƒ|jƒd|_tjd||ƒq‹nWdQXdS(sV Releases the file lock. Please note, that the lock is only completly released, if the lock counter is 0. Also note, that the lock file itself is not automatically deleted. :arg bool force: If true, the lock counter is ignored and the lock is released in every case. iis#Attempting to release lock %s on %ssLock %s released on %sN( RRRR(RR)R*RR+R(RtforceR1R2((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR!s      cCs|jƒ|S(N(R3(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR As cCs|jƒdS(N(R!R(RR"R#R$((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR%Es cCs|jdtƒdS(NR4(R!R'R(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyt__del__IsN(R RRR tpropertyRRtsetterRRRRR3tFalseR!R R%R5(((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR`s    e "  cBs eZdZd„Zd„ZRS(se Uses the :func:`msvcrt.locking` function to hard lock the lock file on windows systems. cCs’tjtjBtjB}ytj|j|ƒ}Wntk rCnKXytj|tj dƒWn$t tfk r„tj |ƒn X||_ dS(Ni(tostO_RDWRtO_CREATtO_TRUNCtopenRtOSErrortmsvcrttlockingtLK_NBLCKtIOErrortcloseRR(Rt open_modetfd((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyRXs  cCsa|j}d|_tj|tjdƒtj|ƒytj|jƒWnt k r\nXdS(Ni( RRR?R@tLK_UNLCKR9RCtremoveRR>(RRE((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyRhs    (R RRRR(((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyRRs cBs eZdZd„Zd„ZRS(sR Uses the :func:`fcntl.flock` to hard lock the lock file on unix systems. cCs~tjtjBtjB}tj|j|ƒ}ytj|tjtj BƒWn$t t fk rptj |ƒn X||_ dS(N(R9R:R;R<R=RtfcntltflocktLOCK_EXtLOCK_NBRBR>RCRR(RRDRE((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR€s cCs6|j}d|_tj|tjƒtj|ƒdS(N(RRRHRItLOCK_UNR9RC(RRE((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyRŒs    (R RRRR(((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR{s cBs eZdZd„Zd„ZRS(s8 Simply watches the existence of the lock file. cCs^tjtjBtjBtjB}ytj|j|ƒ}Wnttfk rPn X||_ dS(N( R9tO_WRONLYR;tO_EXCLR<R=RRBR>RR(RRDRE((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyRs cCsEtj|jƒd|_ytj|jƒWntk r@nXdS(N(R9RCRRRGRR>(R((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR§s  (R RRRR(((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pyR˜s s only soft file lock is available(RtloggingR9RR&twarningst ImportErrorRR?RHt TimeoutErrort NameErrorR>t__all__t __version__t getLoggerR R)RR.RRRRRtwarn(((sBlib/python2.7/site-packages/navigator_updater/external/filelock.pytsJ              ò)!