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contractcourt/success_resolver: extract HTLC success handling into broadcastSuccessTx

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This commit is contained in:
Johan T. Halseth 2020-12-09 12:24:02 +01:00
parent 9d33b00082
commit 0b84d5f976
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GPG Key ID: 15BAADA29DA20D26
1 changed files with 33 additions and 18 deletions
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51
contractcourt/htlc_success_resolver.go
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@ -108,6 +108,38 @@ func (h *htlcSuccessResolver) Resolve() (ContractResolver, error) {
return h.resolveRemoteCommitOutput()
}
// Otherwise this an output on our own commitment, and we must start by
// broadcasting the second-level success transaction.
secondLevelOutpoint, err := h.broadcastSuccessTx()
if err != nil {
return nil, err
}
// To wrap this up, we'll wait until the second-level transaction has
// been spent, then fully resolve the contract.
log.Infof("%T(%x): waiting for second-level HTLC output to be spent "+
"after csv_delay=%v", h, h.htlc.RHash[:], h.htlcResolution.CsvDelay)
spend, err := waitForSpend(
secondLevelOutpoint,
h.htlcResolution.SweepSignDesc.Output.PkScript,
h.broadcastHeight, h.Notifier, h.quit,
)
if err != nil {
return nil, err
}
h.resolved = true
return nil, h.checkpointClaim(
spend.SpenderTxHash, channeldb.ResolverOutcomeClaimed,
)
}
// broadcastSuccessTx handles an HTLC output on our local commitment by
// broadcasting the second-level success transaction. It returns the ultimate
// outpoint of the second-level tx, that we must wait to be spent for the
// resolver to be fully resolved.
func (h *htlcSuccessResolver) broadcastSuccessTx() (*wire.OutPoint, error) {
log.Infof("%T(%x): broadcasting second-layer transition tx: %v",
h, h.htlc.RHash[:], spew.Sdump(h.htlcResolution.SignedSuccessTx))
@ -146,24 +178,7 @@ func (h *htlcSuccessResolver) Resolve() (ContractResolver, error) {
}
}
// To wrap this up, we'll wait until the second-level transaction has
// been spent, then fully resolve the contract.
log.Infof("%T(%x): waiting for second-level HTLC output to be spent "+
"after csv_delay=%v", h, h.htlc.RHash[:], h.htlcResolution.CsvDelay)
spend, err := waitForSpend(
&h.htlcResolution.ClaimOutpoint,
h.htlcResolution.SweepSignDesc.Output.PkScript,
h.broadcastHeight, h.Notifier, h.quit,
)
if err != nil {
return nil, err
}
h.resolved = true
return nil, h.checkpointClaim(
spend.SpenderTxHash, channeldb.ResolverOutcomeClaimed,
)
return &h.htlcResolution.ClaimOutpoint, nil
}
// resolveRemoteCommitOutput handles sweeping an HTLC output on the remote