lightningdevkit
Rebalance route finder
We should build a second get_route-like method that, instead of seeking to send funds from one node to another, seeks to balance the funds in a set of ChannelDetails objects by routing through a NetworkGraph back to the same node.
Go for it! I imagine it will be simplest to refactor the existing get_route into a thin wrapper and a helper which does the work and supports both rebalance and regular route finding (or at least is used to calculate a path from our peer back to us without the to-be-balanced channel being used).
On Sep 9, 2021, at 08:34, Abhik Banerjee @.***> wrote:
Hey, if no one is working on this, may I take a shot at it?
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I was actually thinking about implementing a method for this paper by Rene Pickhardt. But I take it at this time a Just in Time Routing scheme would be favourable? I can follow c-lightning implementation by cdecker.
The thought of giving the user a choice to select the rebalancing option or finding an alternative route sounds good.
If we want a parallel route finder (which we could totally do) we should support both routefinders for rebalance-route-finding. For rebalancing we probably don’t want something like the Pickhardt route-finding since we don’t really care about reliability, we just care about minimizing fees.
Pickhardt route-finding we may not want to do anytime soon anyway - it is likely too restrictive in terms of requiring base fees and may overpay in fees, we should first experiment with fee-based scoring of the form “I’m willing to pay X extra in fees to have an N% more reliable payment” which is rather simple to implement. That is something Jeff is currently working on.
On Sep 12, 2021, at 10:46, Abhik Banerjee @.***> wrote:
I was actually thinking about implementing a method for this paper by Rene Pickhardt. But I take it at this time a Just in Time Routing scheme would be favourable? I can follow c-lightning implementation by cdecker.
The thought of giving the user a choice to select the rebalancing option or finding an alternative route sounds good.
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Hey, sorry but I cannot work on this issue at this time. So if anyone is interested, please feel free to take it up.
Yep, go for it! I think there's somewhat less interest in lightning in rebalancing in general but its definitely still something we should support, for users who want it.
Got tied up in Qala.dev stuff, but planning to continue with this in a few days. No ETA though :)