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88 lines
2.5 KiB
Python
88 lines
2.5 KiB
Python
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='sto2.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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host="68.66.241.111"
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# host="0.0.0.0"
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async def run():
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# Create a node and start listening on port 5678
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node = Server() #storage=HalfForgetfulStorage())
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await node.listen(8469)
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# Bootstrap the node by connecting to other known nodes, in this case
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# replace 123.123.123.123 with the IP of another node and optionally
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# give as many ip/port combos as you can for other nodes.
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await node.bootstrap([(host, 8468)])
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# set a value for the key "my-key" on the network
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# await node.set("my-key2", "my awesome value")
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# get the value associated with "my-key" from the network
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result = await node.get("my-key2")
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print(result)
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asyncio.run(run())
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