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92 lines
2.4 KiB
Python
92 lines
2.4 KiB
Python
import logging
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import asyncio
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from kademlia.network import Server
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from kademlia.storage import *
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import shelve
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from collections import OrderedDict
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import pickle,os
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class HalfForgetfulStorage(ForgetfulStorage):
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def __init__(self, ttl=604800):
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"""
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By default, max age is a week.
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"""
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self.fn='sto.dat'
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if not os.path.exists(self.fn):
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self.data={}
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else:
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with open(self.fn,'rb') as f:
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self.data=pickle.load(f)
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print('loaded:',self.data)
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#self.data = pickle.open('sto.dat','rb') #,writeback=True)
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# self.data = self.store.get('OrderedDict',OrderedDict())
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self.ttl = ttl
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def __setitem__(self, key, value):
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self.data[key] = (time.monotonic(), value)
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self.write()
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def write(self):
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with open(self.fn,'wb') as f:
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pickle.dump(self.data, f, protocol=pickle.HIGHEST_PROTOCOL)
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def get(self, key, default=None):
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# self.cull()
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if key in self.data:
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print('????',self.data[key])
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return self[key]
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return default
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def __getitem__(self, key):
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return self.data[key][1]
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def __repr__(self):
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return repr(self.data)
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def iter_older_than(self, seconds_old):
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min_birthday = time.monotonic() - seconds_old
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zipped = self._triple_iter()
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matches = takewhile(lambda r: min_birthday >= r[1], zipped)
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return list(map(operator.itemgetter(0, 2), matches))
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def _triple_iter(self):
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ikeys = self.data.keys()
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ibirthday = map(operator.itemgetter(0), self.data.values())
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ivalues = map(operator.itemgetter(1), self.data.values())
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return zip(ikeys, ibirthday, ivalues)
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def __iter__(self):
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ikeys = self.data.keys()
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ivalues = map(operator.itemgetter(1), self.data.values())
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return zip(ikeys, ivalues)
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handler = logging.StreamHandler()
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formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
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handler.setFormatter(formatter)
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log = logging.getLogger('kademlia')
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log.addHandler(handler)
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log.setLevel(logging.DEBUG)
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loop = asyncio.get_event_loop()
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loop.set_debug(True)
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shelf = HalfForgetfulStorage()
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server = Server(storage=shelf)
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loop.run_until_complete(server.listen(8468))
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try:
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loop.run_forever()
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except KeyboardInterrupt:
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pass
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finally:
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server.stop()
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loop.close()
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