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peer: ensure we stop the channel if error happens in loadActiveChannels

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In this commit, we fix a goroutine leak that could occur if while we
were loading an error occurred in any of the steps after we created the
channel object, but before it was actually loaded in to the script. If
an error occurs at any step, we ensure that we’ll stop toe channel.
Otherwise, the sigPool goroutines would still be lingering and never be
stopped.
This commit is contained in:
Olaoluwa Osuntokun 2018-03-19 19:14:50 -07:00
parent 92eebff64e
commit fda3b871c1
No known key found for this signature in database
GPG Key ID: 964EA263DD637C21
1 changed files with 8 additions and 0 deletions
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8
peer.go
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@ -306,6 +306,7 @@ func (p *peer) loadActiveChannels(chans []*channeldb.OpenChannel) error {
p.server.cc.signer, p.server.witnessBeacon, dbChan,
)
if err != nil {
lnChan.Stop()
return err
}
@ -325,6 +326,7 @@ func (p *peer) loadActiveChannels(chans []*channeldb.OpenChannel) error {
if dbChan.IsBorked {
peerLog.Warnf("ChannelPoint(%v) is borked, won't "+
"start.", chanPoint)
lnChan.Stop()
continue
}
@ -333,15 +335,18 @@ func (p *peer) loadActiveChannels(chans []*channeldb.OpenChannel) error {
if _, ok := p.failedChannels[chanID]; ok {
peerLog.Warnf("ChannelPoint(%v) is failed, won't "+
"start.", chanPoint)
lnChan.Stop()
continue
}
blockEpoch, err := p.server.cc.chainNotifier.RegisterBlockEpochNtfn()
if err != nil {
lnChan.Stop()
return err
}
_, currentHeight, err := p.server.cc.chainIO.GetBestBlock()
if err != nil {
lnChan.Stop()
return err
}
@ -351,6 +356,7 @@ func (p *peer) loadActiveChannels(chans []*channeldb.OpenChannel) error {
graph := p.server.chanDB.ChannelGraph()
info, p1, p2, err := graph.FetchChannelEdgesByOutpoint(chanPoint)
if err != nil && err != channeldb.ErrEdgeNotFound {
lnChan.Stop()
return err
}
@ -394,6 +400,7 @@ func (p *peer) loadActiveChannels(chans []*channeldb.OpenChannel) error {
*chanPoint, false,
)
if err != nil {
lnChan.Stop()
return err
}
linkCfg := htlcswitch.ChannelLinkConfig{
@ -430,6 +437,7 @@ func (p *peer) loadActiveChannels(chans []*channeldb.OpenChannel) error {
uint32(currentHeight))
if err := p.server.htlcSwitch.AddLink(link); err != nil {
lnChan.Stop()
return err
}
}