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PyBitmessage/src/knownnodes.py

46 lines
1.4 KiB

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