127 lines
3.0 KiB
Go
127 lines
3.0 KiB
Go
package wallet
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import (
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"sync"
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"github.com/btcsuite/btcd/btcec"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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)
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// ChannelReservation...
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type ChannelReservation struct {
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FundingType FundingType
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FundingAmount btcutil.Amount
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ReserveAmount btcutil.Amount
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MinFeePerKb btcutil.Amount
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sync.RWMutex // All fields below owned by the lnwallet.
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theirInputs []*wire.TxIn
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ourInputs []*wire.TxIn
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theirChange []*wire.TxOut
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ourChange []*wire.TxOut
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ourKey *btcec.PrivateKey
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theirKey *btcec.PublicKey
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// In order of sorted inputs. Sorting is done in accordance
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// to BIP-69: https://github.com/bitcoin/bips/blob/master/bip-0069.mediawiki.
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theirSigs [][]byte
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ourSigs [][]byte
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normalizedTxID wire.ShaHash
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fundingTx *wire.MsgTx
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// TODO(roasbef): time locks, who pays fee etc.
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// TODO(roasbeef): record Bob's ln-ID?
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completedFundingTx *btcutil.Tx
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reservationID uint64
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wallet *LightningWallet
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}
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// newChannelReservation...
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func newChannelReservation(t FundingType, fundingAmt btcutil.Amount,
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minFeeRate btcutil.Amount, wallet *LightningWallet, id uint64) *ChannelReservation {
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return &ChannelReservation{
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FundingType: t,
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FundingAmount: fundingAmt,
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MinFeePerKb: minFeeRate,
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wallet: wallet,
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reservationID: id,
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}
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}
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// OurFunds...
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func (r *ChannelReservation) OurFunds() ([]*wire.TxIn, []*wire.TxOut, *btcec.PublicKey) {
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r.RLock()
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defer r.RUnlock()
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return r.ourInputs, r.ourChange, r.ourKey.PubKey()
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}
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// AddCounterPartyFunds...
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func (r *ChannelReservation) AddFunds(theirInputs []*wire.TxIn, theirChangeOutputs []*wire.TxOut, multiSigKey *btcec.PublicKey) error {
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errChan := make(chan error, 1)
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r.wallet.msgChan <- &addCounterPartyFundsMsg{
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pendingFundingID: r.reservationID,
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theirInputs: theirInputs,
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theirChangeOutputs: theirChangeOutputs,
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theirKey: multiSigKey,
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err: errChan,
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}
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return <-errChan
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}
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// OurSigs...
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func (r *ChannelReservation) OurSigs() [][]byte {
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r.RLock()
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defer r.RUnlock()
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return r.ourSigs
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}
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// TheirFunds...
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// TODO(roasbeef): return error if accessors not yet populated?
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func (r *ChannelReservation) TheirFunds() ([]*wire.TxIn, []*wire.TxOut, *btcec.PublicKey) {
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r.RLock()
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defer r.RUnlock()
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return r.theirInputs, r.theirChange, r.theirKey
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}
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// CompleteFundingReservation...
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func (r *ChannelReservation) CompleteReservation(theirSigs [][]byte) error {
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errChan := make(chan error, 1)
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r.wallet.msgChan <- &addCounterPartySigsMsg{
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pendingFundingID: r.reservationID,
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theirSigs: theirSigs,
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err: errChan,
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}
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return <-errChan
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}
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// FinalFundingTransaction...
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func (r *ChannelReservation) FinalFundingTx() *btcutil.Tx {
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r.RLock()
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defer r.RUnlock()
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return r.completedFundingTx
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}
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// RequestFundingReserveCancellation...
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// TODO(roasbeef): also return mutated state?
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func (r *ChannelReservation) Cancel() {
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doneChan := make(chan struct{}, 1)
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r.wallet.msgChan <- &fundingReserveCancelMsg{
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pendingFundingID: r.reservationID,
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done: doneChan,
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}
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<-doneChan
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}
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