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channeldb+routing: add in-memory graph

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Adds an in-memory channel graph cache for faster pathfinding.

Original PoC by: Joost Jager
Co-Authored by: Oliver Gugger
This commit is contained in:
Joost Jager
2021-09-21 19:18:20 +02:00
committed by Oliver Gugger
parent d6fa912188
commit 369c09be61
11 changed files with 652 additions and 133 deletions
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12
routing/router.go
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@@ -1756,12 +1756,6 @@ func (r *ChannelRouter) FindRoute(source, target route.Vertex,
if err != nil {
return nil, err
}
defer func() {
err := routingTx.close()
if err != nil {
log.Errorf("Error closing db tx: %v", err)
}
}()
path, err := findPath(
&graphParams{
@@ -2763,12 +2757,6 @@ func (r *ChannelRouter) BuildRoute(amt *lnwire.MilliSatoshi,
if err != nil {
return nil, err
}
defer func() {
err := routingTx.close()
if err != nil {
log.Errorf("Error closing db tx: %v", err)
}
}()
// Traverse hops backwards to accumulate fees in the running amounts.
source := r.selfNode.PubKeyBytes