50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
import pickle
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import os
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import threading
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from bmconfigparser import BMConfigParser
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import state
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knownNodesLock = threading.Lock()
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knownNodes = {}
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knownNodesTrimAmount = 2000
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# forget a node after rating is this low
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knownNodesForgetRating = -0.5
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def saveKnownNodes(dirName = None):
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if dirName is None:
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dirName = state.appdata
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with knownNodesLock:
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with open(os.path.join(dirName, 'knownnodes.dat'), 'wb') as output:
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pickle.dump(knownNodes, output)
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def increaseRating(peer):
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increaseAmount = 0.1
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maxRating = 1
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with knownNodesLock:
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for stream in knownNodes.keys():
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try:
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knownNodes[stream][peer]["rating"] = min(knownNodes[stream][peer]["rating"] + increaseAmount, maxRating)
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except KeyError:
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pass
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def decreaseRating(peer):
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decreaseAmount = 0.1
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minRating = -1
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with knownNodesLock:
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for stream in knownNodes.keys():
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try:
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knownNodes[stream][peer]["rating"] = max(knownNodes[stream][peer]["rating"] - decreaseAmount, minRating)
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except KeyError:
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pass
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def trimKnownNodes(recAddrStream = 1):
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if len(knownNodes[recAddrStream]) < int(BMConfigParser().get("knownnodes", "maxnodes")):
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return
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with knownNodesLock:
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oldestList = sorted(knownNodes[recAddrStream], key=lambda x: x['lastseen'])[:knownNodesTrimAmount]
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for oldest in oldestList:
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del knownNodes[recAddrStream][oldest]
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