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contractcourt: make empty htlcSets for closed channels

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This prevents a panic where an insert is attempted on a nil map via
updateActiveHTLCs. This panic would occur if the channel arbitrator
was in a buggy state, possibly introduced by power loss or via
SIGKILL.
This commit is contained in:
eugene
2022-05-27 16:18:02 -04:00
parent 08e4e66574
commit 160d63b88e
1 changed files with 6 additions and 4 deletions
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10
contractcourt/chain_arbitrator.go
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@@ -601,11 +601,13 @@ func (c *ChainArbitrator) Start() error {
return c.ResolveContract(chanPoint) return c.ResolveContract(chanPoint)
} }
// We can also leave off the set of HTLC's here as since the // We create an empty map of HTLC's here since it's possible
// channel is already in the process of being full resolved, no // that the channel is in StateDefault and updateActiveHTLCs is
// new HTLC's will be added. // called. We want to avoid writing to an empty map. Since the
// channel is already in the process of being resolved, no new
// HTLCs will be added.
c.activeChannels[chanPoint] = NewChannelArbitrator( c.activeChannels[chanPoint] = NewChannelArbitrator(
arbCfg, nil, chanLog, arbCfg, make(map[HtlcSetKey]htlcSet), chanLog,
) )
} }