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https://github.com/tahoe-lafs/tahoe-lafs.git
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44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
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import os.path, stat, weakref, time
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from twisted.application import service, internet
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from allmydata.util import fileutil
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HOUR = 60*60
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class CacheDirectoryManager(service.MultiService):
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def __init__(self, basedir, pollinterval=1*HOUR, old=1*HOUR):
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service.MultiService.__init__(self)
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self.basedir = basedir
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fileutil.make_dirs(basedir)
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self.old = old
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self.files = weakref.WeakValueDictionary()
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t = internet.TimerService(pollinterval, self.check)
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t.setServiceParent(self)
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def get_file(self, key):
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assert isinstance(key, str) # used as filename
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absfn = os.path.join(self.basedir, key)
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if os.path.exists(absfn):
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os.utime(absfn, None)
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cf = CacheFile(absfn)
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self.files[key] = cf
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return cf
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def check(self):
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now = time.time()
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for fn in os.listdir(self.basedir):
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if fn in self.files:
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continue
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absfn = os.path.join(self.basedir, fn)
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mtime = os.stat(absfn)[stat.ST_MTIME]
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if now - mtime > self.old:
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os.remove(absfn)
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class CacheFile:
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def __init__(self, absfn):
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self.filename = absfn
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def get_filename(self):
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return self.filename
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