AaronFiore/electrum
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lnrouter+lnworker: use liquidity hints

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Adds liquidity hints for the sending capabilities of routing channels in the
graph. The channel blacklist is incorporated into liquidity hints.
Liquidity hints are updated when a payment fails with a temporary
channel failure or when it succeeds. Liquidity hints are used to give a
penalty in the _edge_cost heuristics used by the pathfinding algorithm.
The base penalty in (_edge_cost) is removed because it is now part of the
liquidity penalty. We don't return early from get_distances, as we want
to explore all channels.
This commit is contained in:
bitromortac
2021-03-09 08:47:30 +01:00
parent 209449bec4
commit 4df67a4f78
7 changed files with 418 additions and 60 deletions
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13
electrum/lnutil.py
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@@ -1354,16 +1354,3 @@ class OnionFailureCodeMetaFlag(IntFlag):
UPDATE = 0x1000
class ChannelBlackList:
def __init__(self):
self.blacklist = dict() # short_chan_id -> timestamp
def add(self, short_channel_id: ShortChannelID):
now = int(time.time())
self.blacklist[short_channel_id] = now
def get_current_list(self) -> Set[ShortChannelID]:
BLACKLIST_DURATION = 3600
now = int(time.time())
return set(k for k, t in self.blacklist.items() if now - t < BLACKLIST_DURATION)