ó ˆ>m^c@sdZddlmZdZyddlmZWn!ek rSddlmZnXddlZddl Z ddl Z yddl j Z Wnek rªddlZ nXyddlZWnek rÚddlZnXddlZddlZejddkrefZn eefZd„ZeƒZd e jfd „ƒYZd dd „ƒYZd „Zedkr{eƒndS(s PickleShare - a small 'shelve' like datastore with concurrency support Like shelve, a PickleShareDB object acts like a normal dictionary. Unlike shelve, many processes can access the database simultaneously. Changing a value in database is immediately visible to other processes accessing the same database. Concurrency is possible because the values are stored in separate files. Hence the "database" is a directory where *all* files are governed by PickleShare. Example usage:: from pickleshare import * db = PickleShareDB('~/testpickleshare') db.clear() print "Should be empty:",db.items() db['hello'] = 15 db['aku ankka'] = [1,2,313] db['paths/are/ok/key'] = [1,(5,46)] print db.keys() del db['aku ankka'] This module is certainly not ZODB, but can be used for low-load (non-mission-critical) situations where tiny code size trumps the advanced features of a "real" object database. Installation guide: pip install pickleshare Author: Ville Vainio License: MIT open source license. iÿÿÿÿ(tprint_functions0.7.5(tPathNiicCsdtt|ƒdƒdS(Ns%02xiiþÿÿÿ(tabsthash(tkey((s*lib/python2.7/site-packages/pickleshare.pyt gethashfile@st PickleShareDBcBsªeZdZd„Zd„Zd„Zd„Zeed„Z d„Z d„Z d„Z d „Z dd „Zd „Zd „Zd „Zdd„Zd„Zd„ZRS(s7 The main 'connection' object for PickleShare database cCs¯t|tƒst|ƒ}ntjjtjj|ƒƒ}t|ƒ|_|jj ƒs¢y|jj dt ƒWq¢t k rž}|j t jkrŸ‚qŸq¢Xni|_dS(s: Return a db object that will manage the specied directorytparentsN(t isinstancet string_typeststrtostpathtabspatht expanduserRtroottis_dirtmkdirtTruetOSErrorterrnotEEXISTtcache(tselfRte((s*lib/python2.7/site-packages/pickleshare.pyt__init__Gs cCs×|j|}y|jƒtj}Wntk rCt|ƒ‚nX||jkry||j|dkry|j|dSy1|jdƒ}tj|j ƒƒ}WdQXWnt|ƒ‚nX||f|j|<|S(s db['key'] reading iitrbN( RtstattST_MTIMERtKeyErrorRtopentpickletloadstread(RRtfiltmtimetftobj((s*lib/python2.7/site-packages/pickleshare.pyt __getitem__Ys  &c Cs¼|j|}|j}|r<|jƒ r<|jdtƒn|jdƒ}tj||ddƒWdQXy ||jƒj f|j | Get all data contained in hashed category 'hashroot' as dict s/*iÿÿÿÿttxxtCorrupts!deleted - hset is not threadsafe!(tkeystsorttlentendswithR0Rtprinttuncache(RR1thfilestlasttallR$((s*lib/python2.7/site-packages/pickleshare.pyR7œs    cCs—|j|dƒ}i}x,|D]$}|j||ƒ|j|ƒq W|||dR0RCRtnametunlink(RR1RDRFR$tp((s*lib/python2.7/site-packages/pickleshare.pyt hcompress³s   cCsF|j|}|jj|dƒy|jƒWntk rAnXdS(s del db["key"] N(RRtpoptNoneRHR(RRR"((s*lib/python2.7/site-packages/pickleshare.pyt __delitem__Ês   cCs"t|j|jƒƒjddƒS(s% Make a key suitable for user's eyes s\t/(R t relative_toRtreplace(RRI((s*lib/python2.7/site-packages/pickleshare.pyt _normalizedÕscCs_|dkr!|jjdƒ}n|jj|ƒ}g|D]!}|jƒr:|j|ƒ^q:S(s, All keys in DB, or all keys matching a globt*N(RLRtrglobtglobtis_fileRQ(RtglobpattfilesRI((s*lib/python2.7/site-packages/pickleshare.pyR>Ùs cCst|jƒƒS(N(titerR>(R((s*lib/python2.7/site-packages/pickleshare.pyt__iter__âscCst|jƒƒS(N(R@R>(R((s*lib/python2.7/site-packages/pickleshare.pyt__len__åscGs:|si|_nx!|D]}|jj|dƒqWdS(sË Removes all, or specified items from cache Use this after reading a large amount of large objects to free up memory, when you won't be needing the objects for a while. N(RRKRL(Rtitemstit((s*lib/python2.7/site-packages/pickleshare.pyRCès  i<cCs¹dgddgddg}d}d}x‡y||}|SWntk rSnX||krot|ƒ‚ntj||ƒ|||7}|t|ƒdkr.|d7}q.q.WdS(s Wait (poll) for a key to get a value Will wait for `maxwaittime` seconds before raising a KeyError. The call exits normally if the `key` field in db gets a value within the timeout period. Use this for synchronizing different processes or for ensuring that an unfortunately timed "db['key'] = newvalue" operation in another process (which causes all 'get' operation to cause a KeyError for the duration of pickling) won't screw up your program logic. gš™™™™™É?igà?iiiN(RttimetsleepR@(RRt maxwaittimetwtimesttriestwaitedtval((s*lib/python2.7/site-packages/pickleshare.pytwaitgetõs   cCs t||ƒS(s, Get a convenient link for accessing items (tPickleShareLink(Rtfolder((s*lib/python2.7/site-packages/pickleshare.pytgetlinkscCs d|jS(NsPickleShareDB('%s')(R(R((s*lib/python2.7/site-packages/pickleshare.pyt__repr__sN(t__name__t __module__t__doc__RR&R.R5R6RR:R7RJRMRQRLR>RYRZRCRdRgRh(((s*lib/python2.7/site-packages/pickleshare.pyREs"          RecBs2eZdZd„Zd„Zd„Zd„ZRS(sÜ A shortdand for accessing nested PickleShare data conveniently. Created through PickleShareDB.getlink(), example:: lnk = db.getlink('myobjects/test') lnk.foo = 2 lnk.bar = lnk.foo + 5 cCs|jjtƒƒdS(N(t__dict__R0tlocals(Rtdbtkeydir((s*lib/python2.7/site-packages/pickleshare.pyR(scCs|jd|jdd|S(NRnRoRN(Rl(RR((s*lib/python2.7/site-packages/pickleshare.pyt __getattr__+scCs||j|jd|t;(RlR>tjoinRtbasename(RRnR>tk((s*lib/python2.7/site-packages/pickleshare.pyRh/s   (RiRjRkRRpRqRh(((s*lib/python2.7/site-packages/pickleshare.pyRes     c Cs‚ddl}|jdƒ}t}ddl}t|jƒdkrPt|ƒdS|jd}|jd}|dkrº|sˆdg}n||dƒ}ddl}|j|jƒƒnÄ|dkr%|j j ƒ}||dƒ}t |ƒ} |j ƒx€|jƒD]\} } | || dump.txt pickleshare load /path/to/db < dump.txt pickleshare test /path/to/db iiR*t.itloadttestwaitt250ttest(ttextwraptdedentRtsysR@targvRBtpprintR[tstdinR!tevaltclearRdRztstress( R{tusagetDBR}tcmdtargsRnRtconttdataRutv((s*lib/python2.7/site-packages/pickleshare.pytmain6s<               t__main__((Rkt __future__Rt __version__tpathlibRt ImportErrortpathlib2R RR]tcollections.abctabctcollections_abct collectionstcPickleRRR}t version_infoR R tunicodeRtobjectR6tMutableMappingRReR‹Ri(((s*lib/python2.7/site-packages/pickleshare.pyt"s6 $        Ù '