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routing: pass link bandwidth to traffic shaper's bandwidth query

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This commit updates the traffic shaper's bandwidth query method to
accept the link bandwidth as a parameter. This allows an external
traffic shaper to optionally return the link bandwidth as the payment
bandwidth.
This commit is contained in:
ffranr 2024-06-20 22:28:58 +01:00
parent 393d6829ca
commit 29a12c28c9
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GPG key ID: B1F8848557AA29D2
1 changed files with 9 additions and 4 deletions
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13
routing/bandwidth.go
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@ -43,8 +43,8 @@ type TlvTrafficShaper interface {
// of 0 means there is no bandwidth available. To find out if a channel
// is a custom channel that should be handled by the traffic shaper, the
// HandleTraffic method should be called first.
PaymentBandwidth(htlcBlob,
commitmentBlob fn.Option[tlv.Blob]) (lnwire.MilliSatoshi, error)
PaymentBandwidth(htlcBlob, commitmentBlob fn.Option[tlv.Blob],
linkBandwidth lnwire.MilliSatoshi) (lnwire.MilliSatoshi, error)
}
// AuxHtlcModifier is an interface that allows the sender to modify the outgoing
@ -131,6 +131,11 @@ func (b *bandwidthManager) getBandwidth(cid lnwire.ShortChannelID,
}
var (
// We will pass the link bandwidth to the external traffic
// shaper. This is the current best estimate for the available
// bandwidth for the link.
linkBandwidth = link.Bandwidth()
auxBandwidth lnwire.MilliSatoshi
auxBandwidthDetermined bool
)
@ -154,7 +159,7 @@ func (b *bandwidthManager) getBandwidth(cid lnwire.ShortChannelID,
// Ask for a specific bandwidth to be used for the channel.
commitmentBlob := link.CommitmentCustomBlob()
auxBandwidth, err = ts.PaymentBandwidth(
htlcBlob, commitmentBlob,
htlcBlob, commitmentBlob, linkBandwidth,
)
if err != nil {
return fmt.Errorf("failed to get bandwidth from "+
@ -192,7 +197,7 @@ func (b *bandwidthManager) getBandwidth(cid lnwire.ShortChannelID,
// Otherwise, we'll return the current best estimate for the
// available bandwidth for the link.
return link.Bandwidth()
return linkBandwidth
}
// availableChanBandwidth returns the total available bandwidth for a channel