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129 lines
3.0 KiB
Go
129 lines
3.0 KiB
Go
package main
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import (
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"context"
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"fmt"
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"github.com/lightninglabs/loop"
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"github.com/lightninglabs/loop/looprpc"
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"github.com/urfave/cli"
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)
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var loopOutCommand = cli.Command{
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Name: "out",
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Usage: "perform an off-chain to on-chain swap (looping out)",
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ArgsUsage: "amt [addr]",
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Description: `
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Attempts loop out the target amount into either the backing lnd's
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wallet, or a targeted address.
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The amount is to be specified in satoshis.
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Optionally a BASE58/bech32 encoded bitcoin destination address may be
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specified. If not specified, a new wallet address will be generated.`,
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Flags: []cli.Flag{
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cli.Uint64Flag{
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Name: "channel",
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Usage: "the 8-byte compact channel ID of the channel to loop out",
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},
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cli.StringFlag{
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Name: "addr",
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Usage: "the optional address that the looped out funds " +
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"should be sent to, if let blank the funds " +
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"will go to lnd's wallet",
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},
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cli.Uint64Flag{
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Name: "amt",
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Usage: "the amount in satoshis to loop out",
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},
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cli.Uint64Flag{
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Name: "conf_target",
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Usage: "the number of blocks from the swap " +
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"initiation height that the on-chain HTLC " +
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"should be swept within",
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Value: uint64(loop.DefaultSweepConfTarget),
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},
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},
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Action: loopOut,
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}
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func loopOut(ctx *cli.Context) error {
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args := ctx.Args()
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var amtStr string
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switch {
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case ctx.IsSet("amt"):
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amtStr = ctx.String("amt")
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case ctx.NArg() > 0:
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amtStr = args[0]
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args = args.Tail()
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default:
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// Show command help if no arguments and flags were provided.
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cli.ShowCommandHelp(ctx, "out")
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return nil
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}
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amt, err := parseAmt(amtStr)
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if err != nil {
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return err
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}
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var destAddr string
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switch {
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case ctx.IsSet("addr"):
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destAddr = ctx.String("addr")
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case args.Present():
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destAddr = args.First()
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}
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client, cleanup, err := getClient(ctx)
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if err != nil {
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return err
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}
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defer cleanup()
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sweepConfTarget := int32(ctx.Uint64("conf_target"))
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quoteReq := &looprpc.QuoteRequest{
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Amt: int64(amt),
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ConfTarget: sweepConfTarget,
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}
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quote, err := client.LoopOutQuote(context.Background(), quoteReq)
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if err != nil {
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return err
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}
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limits := getLimits(amt, quote)
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if err := displayLimits(loop.TypeOut, amt, limits, false); err != nil {
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return err
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}
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var unchargeChannel uint64
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if ctx.IsSet("channel") {
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unchargeChannel = ctx.Uint64("channel")
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}
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resp, err := client.LoopOut(context.Background(), &looprpc.LoopOutRequest{
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Amt: int64(amt),
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Dest: destAddr,
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MaxMinerFee: int64(limits.maxMinerFee),
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MaxPrepayAmt: int64(*limits.maxPrepayAmt),
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MaxSwapFee: int64(limits.maxSwapFee),
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MaxPrepayRoutingFee: int64(*limits.maxPrepayRoutingFee),
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MaxSwapRoutingFee: int64(*limits.maxSwapRoutingFee),
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LoopOutChannel: unchargeChannel,
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SweepConfTarget: sweepConfTarget,
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})
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if err != nil {
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return err
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}
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fmt.Printf("Swap initiated\n")
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fmt.Printf("ID: %v\n", resp.Id)
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fmt.Printf("HTLC address: %v\n", resp.HtlcAddress)
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fmt.Println()
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fmt.Printf("Run `loop monitor` to monitor progress.\n")
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return nil
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}
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