mirror of
https://github.com/aljazceru/ark.git
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12d666bfdf
* move OOR transaction creation client-side * robust redeem tx checks * optimize GetVtxos db call * rename CompleteAsyncPayment --> SubmitRedeemTx * fix permissions.go
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
package common
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import (
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"fmt"
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"github.com/btcsuite/btcd/btcutil"
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"github.com/btcsuite/btcd/txscript"
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"github.com/btcsuite/btcwallet/waddrmgr"
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"github.com/lightningnetwork/lnd/input"
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"github.com/lightningnetwork/lnd/lntypes"
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"github.com/lightningnetwork/lnd/lnwallet/chainfee"
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)
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var TreeTxSize = (&input.TxWeightEstimator{}).
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AddTaprootKeySpendInput(txscript.SigHashDefault). // parent
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AddP2TROutput(). // left child
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AddP2TROutput(). // right child
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VSize()
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// liquid node size is 2x the bitcoin node size (avoid min-relay-fee issues with the low fee rate on liquid)
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var CovenantTreeTxSize = TreeTxSize * 2
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var ConnectorTxSize = (&input.TxWeightEstimator{}).
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AddTaprootKeySpendInput(txscript.SigHashDefault).
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AddP2TROutput().
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AddP2TROutput().
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VSize()
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func ComputeForfeitTxFee(
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feeRate chainfee.SatPerKVByte,
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tapscript *waddrmgr.Tapscript,
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witnessSize int,
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aspScriptClass txscript.ScriptClass,
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) (uint64, error) {
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txWeightEstimator := &input.TxWeightEstimator{}
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txWeightEstimator.AddP2PKHInput() // connector input
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txWeightEstimator.AddTapscriptInput(
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lntypes.WeightUnit(witnessSize),
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tapscript,
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)
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switch aspScriptClass {
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case txscript.PubKeyHashTy:
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txWeightEstimator.AddP2PKHOutput()
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case txscript.ScriptHashTy:
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txWeightEstimator.AddP2SHOutput()
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case txscript.WitnessV0PubKeyHashTy:
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txWeightEstimator.AddP2WKHOutput()
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case txscript.WitnessV0ScriptHashTy:
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txWeightEstimator.AddP2WSHOutput()
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case txscript.WitnessV1TaprootTy:
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txWeightEstimator.AddP2TROutput()
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default:
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return 0, fmt.Errorf("unknown asp script class: %v", aspScriptClass)
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}
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return uint64(feeRate.FeeForVSize(lntypes.VByte(txWeightEstimator.VSize())).ToUnit(btcutil.AmountSatoshi)), nil
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}
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func ComputeRedeemTxFee(
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feeRate chainfee.SatPerKVByte,
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vtxos []VtxoInput,
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numOutputs int,
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) (int64, error) {
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if len(vtxos) <= 0 {
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return 0, fmt.Errorf("missing vtxos")
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}
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redeemTxWeightEstimator := &input.TxWeightEstimator{}
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// Estimate inputs
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for _, vtxo := range vtxos {
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if vtxo.Tapscript == nil {
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txid := vtxo.Outpoint.Hash.String()
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return 0, fmt.Errorf("missing tapscript for vtxo %s", txid)
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}
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redeemTxWeightEstimator.AddTapscriptInput(lntypes.WeightUnit(vtxo.WitnessSize), vtxo.Tapscript)
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}
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// Estimate outputs
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for i := 0; i < numOutputs; i++ {
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redeemTxWeightEstimator.AddP2TROutput()
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}
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return int64(feeRate.FeeForVSize(lntypes.VByte(redeemTxWeightEstimator.VSize())).ToUnit(btcutil.AmountSatoshi)), nil
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}
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