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lnwallet/btcwallet: implement CreateSimpleTx

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This commit is contained in:
Johan T. Halseth 2019-03-05 14:22:30 +01:00
parent b4a1024ac7
commit 6fb664dbe1
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1 changed files with 31 additions and 0 deletions
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31
lnwallet/btcwallet/btcwallet.go
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@ -17,6 +17,8 @@ import (
"github.com/btcsuite/btcwallet/chain"
"github.com/btcsuite/btcwallet/waddrmgr"
base "github.com/btcsuite/btcwallet/wallet"
"github.com/btcsuite/btcwallet/wallet/txauthor"
"github.com/btcsuite/btcwallet/wallet/txrules"
"github.com/btcsuite/btcwallet/walletdb"
"github.com/lightningnetwork/lnd/keychain"
"github.com/lightningnetwork/lnd/lnwallet"
@ -300,6 +302,35 @@ func (b *BtcWallet) SendOutputs(outputs []*wire.TxOut,
return b.wallet.SendOutputs(outputs, defaultAccount, 1, feeSatPerKB)
}
// CreateSimpleTx creates a Bitcoin transaction paying to the specified
// outputs. The transaction is not broadcasted to the network, but a new change
// address might be created in the wallet database. In the case the wallet has
// insufficient funds, or the outputs are non-standard, an error should be
// returned. This method also takes the target fee expressed in sat/kw that
// should be used when crafting the transaction.
//
// NOTE: The dryRun argument can be set true to create a tx that doesn't alter
// the database. A tx created with this set to true SHOULD NOT be broadcasted.
//
// This is a part of the WalletController interface.
func (b *BtcWallet) CreateSimpleTx(outputs []*wire.TxOut,
feeRate lnwallet.SatPerKWeight, dryRun bool) (*txauthor.AuthoredTx, error) {
// The fee rate is passed in using units of sat/kw, so we'll convert
// this to sat/KB as the CreateSimpleTx method requires this unit.
feeSatPerKB := btcutil.Amount(feeRate.FeePerKVByte())
// Sanity check outputs.
for _, output := range outputs {
err := txrules.CheckOutput(output, feeSatPerKB)
if err != nil {
return nil, err
}
}
return b.wallet.CreateSimpleTx(defaultAccount, outputs, 1, feeSatPerKB, dryRun)
}
// LockOutpoint marks an outpoint as locked meaning it will no longer be deemed
// as eligible for coin selection. Locking outputs are utilized in order to
// avoid race conditions when selecting inputs for usage when funding a