;ò ÎÑAHc@sÔdZdklZdkZdkZdkZdkZdk Z dk Z dk Z dk l Zd„ZeƒZde ifd„ƒYZdfd„ƒYZd „Zd „Zd „Zed jo 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: easy_install pickleshare Author: Ville Vainio License: MIT open source license. (spathN(sSetcCs dtt|ƒdƒdSdS(Ns%02xiiþÿÿÿ(sabsshashskey(skey((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys gethashfile-ss PickleShareDBcBs˜tZdZd„Zd„Zd„Zd„Zeed„Z d„Z d„Z d„Z d „Z ed „Zd „Zd d „Zd„Zd„ZRS(s7 The main 'connection' object for PickleShare database cCsJt|ƒiƒiƒ|_|iiƒ o|iiƒnh|_dS(s: Return a db object that will manage the specied directoryN(sPathsroots expandusersabspathsselfsisdirsmakedirsscache(sselfsroot((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys__init__4s cCsË|i|}y|iƒti}Wntj ot|ƒ‚nX||i jo||i |djo|i |dSnyt i |i ƒƒ}Wnt|ƒ‚nX||f|i |<|SdS(s db['key'] reading iiN(sselfsrootskeysfilsstatsST_MTIMEsmtimesOSErrorsKeyErrorscachespicklesloadsopensobj(sselfskeysobjsmtimesfil((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys __getitem__=s (cCs¡|i|}|i}|o |iƒ o|iƒnti||i dƒƒ}y||i f|i | Get all data contained in hashed category 'hashroot' as dict s/*iÿÿÿÿssxxsCorrupts!deleted - hset is not threadsafe!N( sselfskeysshashrootshfilesssortslenslastsendswithsallsfsupdatesKeyErrorsuncache(sselfshashrootsallslastsfshfiles((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pyshdict|s    cCsœ|i|dƒ}h}x,|D]$}|i||ƒ|i|ƒq W|||dgi}ti|i|ƒD]}|t |ƒƒq>~}gi}|D]*}|i ƒo||i |ƒƒqkqk~SdS(s, All keys in DB, or all keys matching a globN( sglobpatsNonesselfsroots walkfilessfilessappends_[1]sglobspsPathsisfiles _normalized(sselfsglobpatsfiless_[1]sp((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pyskeys¹s  =cGs=| o h|_nx!|D]}|ii|tƒqWdS(sÜ 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(sitemssselfscachesitspopsNone(sselfsitemssit((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pysuncacheÂs  i<cCsÇdgddgddg}d}d}x•noy||}|SWntj onX||jot|ƒ‚nti ||ƒ|||7}|t |ƒdjo|d7}q.q5WdS(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. f0.20000000000000001if0.5iiiN( swtimesstriesswaitedsselfskeysvalsKeyErrors maxwaittimestimessleepslen(sselfskeys maxwaittimesvalswtimesstriesswaited((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pyswaitgetÏs"   cCst||ƒSdS(s, Get a convenient link for accessing items N(sPickleShareLinksselfsfolder(sselfsfolder((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pysgetlinkïscCsd|iSdS(NsPickleShareDB('%s')(sselfsroot(sself((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys__repr__ós(s__name__s __module__s__doc__s__init__s __getitem__s __setitem__shsets _sentinelsTrueshgetshdicts hcompresss __delitem__s _normalizedsNoneskeyssuncacheswaitgetsgetlinks__repr__(((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys PickleShareDB2s       sPickleShareLinkcBs2tZdZd„Zd„Zd„Zd„ZRS(sà 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|iitƒƒdS(N(sselfs__dict__supdateslocals(sselfsdbskeydir((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys__init__scCs"|id|idd|SdS(Nsdbskeydirs/(sselfs__dict__skey(sselfskey((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys __getattr__scCs||i|id|s;( sselfs__dict__sdbskeyssjoinsappends_[1]sksPathsbasename(sselfskeyssdbs_[1]sk((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys__repr__ s (s__name__s __module__s__doc__s__init__s __getattr__s __setattr__s__repr__(((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pysPickleShareLinkøs    cCstdƒ}|iƒdG|iƒGHd|dq>n|ddjo|idƒn|i t|ƒgƒ||dt i ƒfg|t|ƒ<|i d ||i d |dƒd ƒq>W|G|iiƒ|d djo|iƒq+q+WdS( Ns ~/fsdbtestièiiiÈi!f0.02sproc %dshashii (s PickleShareDBsdbstimessyssrangesisjsstrssleepsgetsossgetpidshsetshgetsstdoutsflushsuncache(sisdbsjssysstime((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pysstress(s$   <* c Csdk}|idƒ} t}dk}t|iƒdjo | GHdSn|id}|id}|djoE| o dg}n||dƒ} dk }|i | i ƒƒnÆ|djo`|i iƒ}||dƒ} t|ƒ} | iƒx€| i ƒD]\}}|| | dump.txt pickleshare load /path/to/db < dump.txt pickleshare test /path/to/db iisdumps.isloadstestwaits250stest(stextwrapsdedentsusages PickleShareDBsDBssysslensargvscmdsargssdbspprintsitemssstdinsreadscontsevalsdatasclearsksvswaitgetstestsstress( sargsscontsDBskscmdstextwrapssysspprintsvsusagesdbsdata((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pysmain=s<               s__main__(s__doc__sIPython.external.pathspathsPathsossstatstimescPicklespicklesUserDictswarningssglobssetssSetssets gethashfilesobjects _sentinels DictMixins PickleShareDBsPickleShareLinkstestsstresssmains__name__(sstatssets gethashfileswarningssossglobstimes PickleShareDBsstresss _sentinelsPickleShareLinksUserDictstestsPathsmainspickle((sN/nyx/web/d/b/dbachman/work/src/ipython-0.8.4/IPython/Extensions/pickleshare.pys?"s         Æ   '