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htlcswitch: after each new state update, notify callers to set of new HTLC's

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Olaoluwa Osuntokun 2018-01-16 20:15:08 -08:00
parent 1418d672f9
commit 2d133acaeb
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1 changed files with 14 additions and 0 deletions
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14
htlcswitch/link.go
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@ -225,6 +225,10 @@ type channelLink struct {
// be forwarded and/or accepted. // be forwarded and/or accepted.
linkControl chan interface{} linkControl chan interface{}
// htlcUpdates is a channel that we'll use to update outside
// sub-systems with the latest set of active HTLC's on our channel.
htlcUpdates chan []channeldb.HTLC
// logCommitTimer is a timer which is sent upon if we go an interval // logCommitTimer is a timer which is sent upon if we go an interval
// without receiving/sending a commitment update. It's role is to // without receiving/sending a commitment update. It's role is to
// ensure both chains converge to identical state in a timely manner. // ensure both chains converge to identical state in a timely manner.
@ -251,6 +255,7 @@ func NewChannelLink(cfg ChannelLinkConfig, channel *lnwallet.LightningChannel,
logCommitTimer: time.NewTimer(300 * time.Millisecond), logCommitTimer: time.NewTimer(300 * time.Millisecond),
overflowQueue: newPacketQueue(lnwallet.MaxHTLCNumber / 2), overflowQueue: newPacketQueue(lnwallet.MaxHTLCNumber / 2),
bestHeight: currentHeight, bestHeight: currentHeight,
htlcUpdates: make(chan []channeldb.HTLC),
quit: make(chan struct{}), quit: make(chan struct{}),
} }
@ -956,6 +961,15 @@ func (l *channelLink) handleUpstreamMsg(msg lnwire.Message) {
} }
l.cfg.Peer.SendMessage(nextRevocation) l.cfg.Peer.SendMessage(nextRevocation)
// Since we just revoked our commitment, we may have a new set
// of HTLC's on our commitment, so we'll send them over our
// HTLC update channel so any callers can be notified.
select {
case l.htlcUpdates <- currentHtlcs:
case <-l.quit:
return
}
// As we've just received a commitment signature, we'll // As we've just received a commitment signature, we'll
// re-start the log commit timer to wake up the main processing // re-start the log commit timer to wake up the main processing
// loop to check if we need to send a commitment signature as // loop to check if we need to send a commitment signature as