95 lines
2.1 KiB
Go
95 lines
2.1 KiB
Go
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// +build routerrpc
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package main
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import (
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"context"
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"errors"
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"fmt"
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"strings"
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"github.com/lightningnetwork/lnd"
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"github.com/lightningnetwork/lnd/lnrpc/routerrpc"
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"github.com/lightningnetwork/lnd/routing/route"
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"github.com/urfave/cli"
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)
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var buildRouteCommand = cli.Command{
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Name: "buildroute",
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Category: "Payments",
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Usage: "Build a route from a list of hop pubkeys.",
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Action: actionDecorator(buildRoute),
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Flags: []cli.Flag{
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cli.Int64Flag{
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Name: "amt",
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Usage: "the amount to send expressed in satoshis. If" +
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"not set, the minimum routable amount is used",
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},
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cli.Int64Flag{
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Name: "final_cltv_delta",
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Usage: "number of blocks the last hop has to reveal " +
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"the preimage",
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Value: lnd.DefaultBitcoinTimeLockDelta,
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},
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cli.StringFlag{
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Name: "hops",
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Usage: "comma separated hex pubkeys",
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},
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cli.Uint64Flag{
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Name: "outgoing_chan_id",
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Usage: "short channel id of the outgoing channel to " +
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"use for the first hop of the payment",
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Value: 0,
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},
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},
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}
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func buildRoute(ctx *cli.Context) error {
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conn := getClientConn(ctx, false)
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defer conn.Close()
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client := routerrpc.NewRouterClient(conn)
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if !ctx.IsSet("hops") {
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return errors.New("hops required")
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}
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// Build list of hop addresses for the rpc.
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hops := strings.Split(ctx.String("hops"), ",")
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rpcHops := make([][]byte, 0, len(hops))
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for _, k := range hops {
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pubkey, err := route.NewVertexFromStr(k)
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if err != nil {
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return fmt.Errorf("error parsing %v: %v", k, err)
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}
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rpcHops = append(rpcHops, pubkey[:])
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}
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var amtMsat int64
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hasAmt := ctx.IsSet("amt")
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if hasAmt {
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amtMsat = ctx.Int64("amt") * 1000
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if amtMsat == 0 {
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return fmt.Errorf("non-zero amount required")
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}
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}
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// Call BuildRoute rpc.
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req := &routerrpc.BuildRouteRequest{
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AmtMsat: amtMsat,
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FinalCltvDelta: int32(ctx.Int64("final_cltv_delta")),
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HopPubkeys: rpcHops,
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OutgoingChanId: ctx.Uint64("outgoing_chan_id"),
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}
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rpcCtx := context.Background()
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route, err := client.BuildRoute(rpcCtx, req)
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if err != nil {
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return err
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}
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printJSON(route)
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return nil
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}
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