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htlcswitch: extract handleDownstreamUpdateAdd in link

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To be able to call just the UpdateAdd logic for synchronously handled
local adds in a later commit.
This commit is contained in:
Joost Jager 2020-05-13 15:29:31 +02:00
parent 55930df70d
commit de2df5606a
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GPG Key ID: A61B9D4C393C59C7
1 changed files with 73 additions and 65 deletions
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28
htlcswitch/link.go
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@ -1254,15 +1254,11 @@ func (l *channelLink) randomFeeUpdateTimeout() time.Duration {
return time.Duration(prand.Int63n(upper-lower) + lower)
}
// handleDownstreamPkt processes an HTLC packet sent from the downstream HTLC
// Switch. Possible messages sent by the switch include requests to forward new
// HTLCs, timeout previously cleared HTLCs, and finally to settle currently
// cleared HTLCs with the upstream peer.
//
// TODO(roasbeef): add sync ntfn to ensure switch always has consistent view?
func (l *channelLink) handleDownstreamPkt(pkt *htlcPacket) {
switch htlc := pkt.htlc.(type) {
case *lnwire.UpdateAddHTLC:
// handleDownstreamUpdateAdd processes an UpdateAddHTLC packet sent from the
// downstream HTLC Switch.
func (l *channelLink) handleDownstreamUpdateAdd(pkt *htlcPacket) {
htlc := pkt.htlc.(*lnwire.UpdateAddHTLC)
// If hodl.AddOutgoing mode is active, we exit early to simulate
// arbitrary delays between the switch adding an ADD to the
// mailbox, and the HTLC being added to the commitment state.
@ -1313,7 +1309,7 @@ func (l *channelLink) handleDownstreamPkt(pkt *htlcPacket) {
l.openedCircuits = append(l.openedCircuits, pkt.inKey())
l.keystoneBatch = append(l.keystoneBatch, pkt.keystone())
l.cfg.Peer.SendMessage(false, htlc)
_ = l.cfg.Peer.SendMessage(false, htlc)
// Send a forward event notification to htlcNotifier.
l.cfg.HtlcNotifier.NotifyForwardingEvent(
@ -1328,6 +1324,18 @@ func (l *channelLink) handleDownstreamPkt(pkt *htlcPacket) {
)
l.tryBatchUpdateCommitTx()
}
// handleDownstreamPkt processes an HTLC packet sent from the downstream HTLC
// Switch. Possible messages sent by the switch include requests to forward new
// HTLCs, timeout previously cleared HTLCs, and finally to settle currently
// cleared HTLCs with the upstream peer.
//
// TODO(roasbeef): add sync ntfn to ensure switch always has consistent view?
func (l *channelLink) handleDownstreamPkt(pkt *htlcPacket) {
switch htlc := pkt.htlc.(type) {
case *lnwire.UpdateAddHTLC:
l.handleDownstreamUpdateAdd(pkt)
case *lnwire.UpdateFulfillHTLC:
// If hodl.SettleOutgoing mode is active, we exit early to