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htlcswitch: in removeLink properly remove items from the interfaceIndex

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In this commit, we fix a bug in the way we handle removing items from
the interfaceIndex. Before this commit, we would delete all items items
with the target public key that of the peer that owns the link being
removed. However, this is incorrect as the peer may have other links
sill active.

In this commit, we fix this by first only deleting the link from the
peer's index, and then checking to see if the index is empty after this
deletion. Only if so do we delete the index for the peer all together.
This commit is contained in:
Olaoluwa Osuntokun 2018-06-11 23:06:08 -07:00
parent 03810603ee
commit 3db06cf7d5
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GPG Key ID: 964EA263DD637C21
1 changed files with 11 additions and 2 deletions
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13
htlcswitch/switch.go
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@ -1840,9 +1840,18 @@ func (s *Switch) removeLink(chanID lnwire.ChannelID) error {
delete(s.linkIndex, link.ChanID())
delete(s.forwardingIndex, link.ShortChanID())
// Remove the channel from channel index.
// If the link has been added to the peer index, then we'll move to
// delete the entry within the index.
peerPub := link.Peer().PubKey()
delete(s.interfaceIndex, peerPub)
if peerIndex, ok := s.interfaceIndex[peerPub]; ok {
delete(peerIndex, link.ChanID())
// If after deletion, there are no longer any links, then we'll
// remove the interface map all together.
if len(peerIndex) == 0 {
delete(s.interfaceIndex, peerPub)
}
}
link.Stop()