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Do not estimate balance for local channels #2988

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Jan 29, 2025
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Do not estimate balance for local channels #2988

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6 changes: 4 additions & 2 deletions eclair-core/src/main/scala/fr/acinq/eclair/router/BalanceEstimate.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -333,15 +333,17 @@ case class GraphWithBalanceEstimates(graph: DirectedGraph, private val balances:
}

def routeCouldRelay(route: Route)(implicit log: LoggingAdapter): GraphWithBalanceEstimates = {
val (balances1, _) = route.hops.foldRight((balances, route.amount)) {
// We drop the first hop which is a local channel, we already have perfect balance information for local channels.
val (balances1, _) = route.hops.drop(1).foldRight((balances, route.amount)) {
case (hop, (balances, amount)) =>
(balances.channelCouldSend(hop, amount), amount + hop.fee(amount))
}
GraphWithBalanceEstimates(graph, balances1)
}

def routeDidRelay(route: Route)(implicit log: LoggingAdapter): GraphWithBalanceEstimates = {
val (balances1, _) = route.hops.foldRight((balances, route.amount)) {
// We drop the first hop which is a local channel, we already have perfect balance information for local channels.
val (balances1, _) = route.hops.drop(1).foldRight((balances, route.amount)) {
case (hop, (balances, amount)) =>
(balances.channelDidSend(hop, amount), amount + hop.fee(amount))
}
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