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routing: reorganize BuildRoute

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bitromortac 2024-06-25 15:02:41 +02:00
parent 9decf80a68
commit 16f6284d97
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GPG Key ID: 1965063FC13BEBE2
1 changed files with 19 additions and 19 deletions
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38
routing/router.go
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@ -1409,8 +1409,7 @@ func (r *ChannelRouter) BuildRoute(amt *lnwire.MilliSatoshi,
hops []route.Vertex, outgoingChan *uint64,
finalCltvDelta int32, payAddr *[32]byte) (*route.Route, error) {
log.Tracef("BuildRoute called: hopsCount=%v, amt=%v",
len(hops), amt)
log.Tracef("BuildRoute called: hopsCount=%v, amt=%v", len(hops), amt)
var outgoingChans map[uint64]struct{}
if outgoingChan != nil {
@ -1419,6 +1418,17 @@ func (r *ChannelRouter) BuildRoute(amt *lnwire.MilliSatoshi,
}
}
// We'll attempt to obtain a set of bandwidth hints that helps us select
// the best outgoing channel to use in case no outgoing channel is set.
bandwidthHints, err := newBandwidthManager(
r.cfg.RoutingGraph, r.cfg.SelfNode, r.cfg.GetLink,
)
if err != nil {
return nil, err
}
sourceNode := r.cfg.SelfNode
// If no amount is specified, we need to build a route for the minimum
// amount that this route can carry.
useMinAmt := amt == nil
@ -1436,23 +1446,6 @@ func (r *ChannelRouter) BuildRoute(amt *lnwire.MilliSatoshi,
runningAmt = *amt
}
// We'll attempt to obtain a set of bandwidth hints that helps us select
// the best outgoing channel to use in case no outgoing channel is set.
bandwidthHints, err := newBandwidthManager(
r.cfg.RoutingGraph, r.cfg.SelfNode, r.cfg.GetLink,
)
if err != nil {
return nil, err
}
// Fetch the current block height outside the routing transaction, to
// prevent the rpc call blocking the database.
_, height, err := r.cfg.Chain.GetBestBlock()
if err != nil {
return nil, err
}
sourceNode := r.cfg.SelfNode
unifiers, senderAmt, err := getRouteUnifiers(
sourceNode, hops, useMinAmt, runningAmt, outgoingChans,
r.cfg.RoutingGraph, bandwidthHints,
@ -1468,6 +1461,13 @@ func (r *ChannelRouter) BuildRoute(amt *lnwire.MilliSatoshi,
return nil, err
}
// Fetch the current block height outside the routing transaction, to
// prevent the rpc call blocking the database.
_, height, err := r.cfg.Chain.GetBestBlock()
if err != nil {
return nil, err
}
// Build and return the final route.
return newRoute(
sourceNode, pathEdges, uint32(height),