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routing: global probability based mission control

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Previously every payment had its own local mission control state which
was in effect only for that payment. In this commit most of the local
state is removed and payments all tap into the global mission control
probability estimator.

Furthermore the decay time of pruned edges and nodes is extended, so
that observations about the network can better benefit future payment
processes.

Last, the probability function is transformed from a binary output to a
gradual curve, allowing for a better trade off between candidate routes.
This commit is contained in:
Joost Jager
2019-03-19 17:09:27 +01:00
parent 3349d517aa
commit 7133f37bb8
12 changed files with 338 additions and 220 deletions
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9
routing/pathfind_test.go
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@@ -75,7 +75,7 @@ var (
// noProbabilitySource is used in testing to return the same probability 1 for
// all edges.
func noProbabilitySource(route.Vertex, EdgeLocator) float64 {
func noProbabilitySource(route.Vertex, EdgeLocator, lnwire.MilliSatoshi) float64 {
return 1
}
@@ -2137,7 +2137,12 @@ func testProbabilityRouting(t *testing.T, p10, p11, p20, minProbability float64,
target := testGraphInstance.aliasMap["target"]
// Configure a probability source with the test parameters.
probabilitySource := func(node route.Vertex, edge EdgeLocator) float64 {
probabilitySource := func(node route.Vertex, edge EdgeLocator,
amt lnwire.MilliSatoshi) float64 {
if amt == 0 {
t.Fatal("expected non-zero amount")
}
switch edge.ChannelID {
case 10: