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lnwallet: Remove rHashMap. 

rHashMap in LightningChannel is no longer needed since HTLCs are now
identified by ID/index instead of payment hash.
This commit is contained in:
Jim Posen 2017-10-24 00:52:28 -07:00 committed by Olaoluwa Osuntokun
parent 317b44e220
commit e66f3a37a3
1 changed files with 0 additions and 33 deletions
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33
lnwallet/channel.go
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@ -1167,13 +1167,6 @@ type LightningChannel struct {
// initiated.
pendingAckFeeUpdate *btcutil.Amount
// rHashMap is a map with PaymentHashes pointing to their respective
// PaymentDescriptors. We insert *PaymentDescriptors whenever we
// receive HTLCs. When a state transition happens (settling or
// canceling the HTLC), rHashMap will provide an efficient
// way to lookup the original PaymentDescriptor.
rHashMap map[PaymentHash][]*PaymentDescriptor
// FundingWitnessScript is the witness script for the 2-of-2 multi-sig
// that opened the channel.
FundingWitnessScript []byte
@ -1276,7 +1269,6 @@ func NewLightningChannel(signer Signer, events chainntnfs.ChainNotifier,
remoteChanCfg: &state.RemoteChanCfg,
localUpdateLog: localUpdateLog,
remoteUpdateLog: remoteUpdateLog,
rHashMap: make(map[PaymentHash][]*PaymentDescriptor),
Capacity: state.Capacity,
FundingWitnessScript: multiSigScript,
ForceCloseSignal: make(chan struct{}),
@ -1617,8 +1609,6 @@ func (lc *LightningChannel) restoreStateLogs(
for i := range localCommitment.incomingHTLCs {
htlc := localCommitment.incomingHTLCs[i]
lc.remoteUpdateLog.restoreHtlc(&htlc)
lc.rHashMap[htlc.RHash] = append(lc.rHashMap[htlc.RHash], &htlc)
}
for i := range localCommitment.outgoingHTLCs {
htlc := localCommitment.outgoingHTLCs[i]
@ -3915,8 +3905,6 @@ func (lc *LightningChannel) ReceiveHTLC(htlc *lnwire.UpdateAddHTLC) (uint64, err
lc.remoteUpdateLog.appendHtlc(pd)
lc.rHashMap[pd.RHash] = append(lc.rHashMap[pd.RHash], pd)
return pd.HtlcIndex, nil
}
@ -3952,13 +3940,6 @@ func (lc *LightningChannel) SettleHTLC(preimage [32]byte, htlcIndex uint64,
lc.localUpdateLog.appendUpdate(pd)
paymentHash := htlc.RHash
lc.rHashMap[paymentHash][0] = nil
lc.rHashMap[paymentHash] = lc.rHashMap[paymentHash][1:]
if len(lc.rHashMap[paymentHash]) == 0 {
delete(lc.rHashMap, paymentHash)
}
return nil
}
@ -4019,13 +4000,6 @@ func (lc *LightningChannel) FailHTLC(htlcIndex uint64, reason []byte) error {
lc.localUpdateLog.appendUpdate(pd)
rHash := htlc.RHash
lc.rHashMap[rHash][0] = nil
lc.rHashMap[rHash] = lc.rHashMap[rHash][1:]
if len(lc.rHashMap[rHash]) == 0 {
delete(lc.rHashMap, rHash)
}
return nil
}
@ -4057,13 +4031,6 @@ func (lc *LightningChannel) MalformedFailHTLC(htlcIndex uint64,
lc.localUpdateLog.appendUpdate(pd)
rHash := htlc.RHash
lc.rHashMap[rHash][0] = nil
lc.rHashMap[rHash] = lc.rHashMap[rHash][1:]
if len(lc.rHashMap[rHash]) == 0 {
delete(lc.rHashMap, rHash)
}
return nil
}