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97 lines
1.7 KiB
Go
97 lines
1.7 KiB
Go
package loop
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import (
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"context"
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"time"
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"github.com/lightninglabs/loop/lndclient"
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"github.com/lightninglabs/loop/utils"
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"github.com/lightningnetwork/lnd/lntypes"
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)
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type swapKit struct {
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htlc *utils.Htlc
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hash lntypes.Hash
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height int32
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log *utils.SwapLog
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lastUpdateTime time.Time
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cost SwapCost
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state SwapState
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executeConfig
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swapConfig
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contract *SwapContract
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swapType SwapType
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}
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func newSwapKit(hash lntypes.Hash, swapType SwapType, cfg *swapConfig,
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contract *SwapContract) (*swapKit, error) {
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// Compose expected on-chain swap script
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htlc, err := utils.NewHtlc(
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contract.CltvExpiry, contract.SenderKey,
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contract.ReceiverKey, hash,
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)
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if err != nil {
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return nil, err
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}
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// Log htlc address for debugging.
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htlcAddress, err := htlc.Address(cfg.lnd.ChainParams)
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if err != nil {
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return nil, err
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}
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log := &utils.SwapLog{
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Hash: hash,
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Logger: logger,
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}
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log.Infof("Htlc address: %v", htlcAddress)
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return &swapKit{
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swapConfig: *cfg,
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hash: hash,
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log: log,
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htlc: htlc,
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state: StateInitiated,
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contract: contract,
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swapType: swapType,
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}, nil
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}
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// sendUpdate reports an update to the swap state.
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func (s *swapKit) sendUpdate(ctx context.Context) error {
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info := &SwapInfo{
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SwapContract: *s.contract,
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SwapHash: s.hash,
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SwapType: s.swapType,
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LastUpdate: s.lastUpdateTime,
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State: s.state,
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}
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s.log.Infof("state %v", info.State)
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select {
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case s.statusChan <- *info:
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case <-ctx.Done():
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return ctx.Err()
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}
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return nil
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}
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type genericSwap interface {
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execute(mainCtx context.Context, cfg *executeConfig,
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height int32) error
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}
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type swapConfig struct {
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lnd *lndclient.LndServices
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store swapClientStore
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server swapServerClient
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}
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