lnwallet: export HTLC generating methods

lnwallet/channel.go

@@ -3022,7 +3022,7 @@ func genRemoteHtlcSigJobs(keyRing *CommitmentKeyRing,
 			Hash:  txHash,
 			Index: uint32(htlc.remoteOutputIndex),
 		}
-		sigJob.Tx, err = createHtlcTimeoutTx(
+		sigJob.Tx, err = CreateHtlcTimeoutTx(
 			chanType, op, outputAmt, htlc.Timeout,
 			uint32(remoteChanCfg.CsvDelay),
 			keyRing.RevocationKey, keyRing.ToLocalKey,
@@ -3075,7 +3075,7 @@ func genRemoteHtlcSigJobs(keyRing *CommitmentKeyRing,
 			Hash:  txHash,
 			Index: uint32(htlc.remoteOutputIndex),
 		}
-		sigJob.Tx, err = createHtlcSuccessTx(
+		sigJob.Tx, err = CreateHtlcSuccessTx(
 			chanType, op, outputAmt, uint32(remoteChanCfg.CsvDelay),
 			keyRing.RevocationKey, keyRing.ToLocalKey,
 		)
@@ -4119,7 +4119,7 @@ func genHtlcSigValidationJobs(localCommitmentView *commitment,
 				htlcFee := HtlcSuccessFee(chanType, feePerKw)
 				outputAmt := htlc.Amount.ToSatoshis() - htlcFee
 
-				successTx, err := createHtlcSuccessTx(
+				successTx, err := CreateHtlcSuccessTx(
 					chanType, op, outputAmt,
 					uint32(localChanCfg.CsvDelay),
 					keyRing.RevocationKey, keyRing.ToLocalKey,
@@ -4173,7 +4173,7 @@ func genHtlcSigValidationJobs(localCommitmentView *commitment,
 				htlcFee := HtlcTimeoutFee(chanType, feePerKw)
 				outputAmt := htlc.Amount.ToSatoshis() - htlcFee
 
-				timeoutTx, err := createHtlcTimeoutTx(
+				timeoutTx, err := CreateHtlcTimeoutTx(
 					chanType, op, outputAmt, htlc.Timeout,
 					uint32(localChanCfg.CsvDelay),
 					keyRing.RevocationKey, keyRing.ToLocalKey,
@@ -5689,7 +5689,7 @@ func newOutgoingHtlcResolution(signer input.Signer,
 
 	// With the fee calculated, re-construct the second level timeout
 	// transaction.
-	timeoutTx, err := createHtlcTimeoutTx(
+	timeoutTx, err := CreateHtlcTimeoutTx(
 		chanType, op, secondLevelOutputAmt, htlc.RefundTimeout,
 		csvDelay, keyRing.RevocationKey, keyRing.ToLocalKey,
 	)
@@ -5827,7 +5827,7 @@ func newIncomingHtlcResolution(signer input.Signer,
 	// taking into account the fee rate used.
 	htlcFee := HtlcSuccessFee(chanType, feePerKw)
 	secondLevelOutputAmt := htlc.Amt.ToSatoshis() - htlcFee
-	successTx, err := createHtlcSuccessTx(
+	successTx, err := CreateHtlcSuccessTx(
 		chanType, op, secondLevelOutputAmt, csvDelay,
 		keyRing.RevocationKey, keyRing.ToLocalKey,
 	)

lnwallet/transactions.go

@@ -35,7 +35,7 @@ var (
 	TimelockShift = uint32(1 << 29)
 )
 
-// createHtlcSuccessTx creates a transaction that spends the output on the
+// CreateHtlcSuccessTx creates a transaction that spends the output on the
 // commitment transaction of the peer that receives an HTLC. This transaction
 // essentially acts as an off-chain covenant as it's only permitted to spend
 // the designated HTLC output, and also that spend can _only_ be used as a
@@ -45,7 +45,7 @@ var (
 // In order to spend the HTLC output, the witness for the passed transaction
 // should be:
 //   * <0> <sender sig> <recvr sig> <preimage>
-func createHtlcSuccessTx(chanType channeldb.ChannelType,
+func CreateHtlcSuccessTx(chanType channeldb.ChannelType,
 	htlcOutput wire.OutPoint, htlcAmt btcutil.Amount, csvDelay uint32,
 	revocationKey, delayKey *btcec.PublicKey) (*wire.MsgTx, error) {
 
@@ -85,7 +85,7 @@ func createHtlcSuccessTx(chanType channeldb.ChannelType,
 	return successTx, nil
 }
 
-// createHtlcTimeoutTx creates a transaction that spends the HTLC output on the
+// CreateHtlcTimeoutTx creates a transaction that spends the HTLC output on the
 // commitment transaction of the peer that created an HTLC (the sender). This
 // transaction essentially acts as an off-chain covenant as it spends a 2-of-2
 // multi-sig output. This output requires a signature from both the sender and
@@ -101,7 +101,7 @@ func createHtlcSuccessTx(chanType channeldb.ChannelType,
 // NOTE: The passed amount for the HTLC should take into account the required
 // fee rate at the time the HTLC was created. The fee should be able to
 // entirely pay for this (tiny: 1-in 1-out) transaction.
-func createHtlcTimeoutTx(chanType channeldb.ChannelType,
+func CreateHtlcTimeoutTx(chanType channeldb.ChannelType,
 	htlcOutput wire.OutPoint, htlcAmt btcutil.Amount,
 	cltvExpiry, csvDelay uint32,
 	revocationKey, delayKey *btcec.PublicKey) (*wire.MsgTx, error) {