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lncli: unify payinvoice and sendpayment code

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This commit prepares lncli for moving over to routerrpc payment calls.
This commit is contained in:
Joost Jager 2019-04-18 15:27:54 +02:00
parent 2644759924
commit 220c2becb1
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GPG Key ID: A61B9D4C393C59C7
1 changed files with 81 additions and 117 deletions
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194
cmd/lncli/commands.go
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@ -2031,6 +2031,38 @@ var cltvLimitFlag = cli.UintFlag{
"this payment",
}
// paymentFlags returns common flags for sendpayment and payinvoice.
func paymentFlags() []cli.Flag {
return []cli.Flag{
cli.StringFlag{
Name: "pay_req",
Usage: "a zpay32 encoded payment request to fulfill",
},
cli.Int64Flag{
Name: "fee_limit",
Usage: "maximum fee allowed in satoshis when " +
"sending the payment",
},
cli.Int64Flag{
Name: "fee_limit_percent",
Usage: "percentage of the payment's amount used as " +
"the maximum fee allowed when sending the " +
"payment",
},
cltvLimitFlag,
cli.Uint64Flag{
Name: "outgoing_chan_id",
Usage: "short channel id of the outgoing channel to " +
"use for the first hop of the payment",
Value: 0,
},
cli.BoolFlag{
Name: "force, f",
Usage: "will skip payment request confirmation",
},
}
}
var sendPaymentCommand = cli.Command{
Name: "sendpayment",
Category: "Payments",
@ -2057,7 +2089,7 @@ var sendPaymentCommand = cli.Command{
destination.
`,
ArgsUsage: "dest amt payment_hash final_cltv_delta | --pay_req=[payment request]",
Flags: []cli.Flag{
Flags: append(paymentFlags(),
cli.StringFlag{
Name: "dest, d",
Usage: "the compressed identity pubkey of the " +
@ -2067,17 +2099,6 @@ var sendPaymentCommand = cli.Command{
Name: "amt, a",
Usage: "number of satoshis to send",
},
cli.Int64Flag{
Name: "fee_limit",
Usage: "maximum fee allowed in satoshis when sending" +
"the payment",
},
cli.Int64Flag{
Name: "fee_limit_percent",
Usage: "percentage of the payment's amount used as the" +
"maximum fee allowed when sending the payment",
},
cltvLimitFlag,
cli.StringFlag{
Name: "payment_hash, r",
Usage: "the hash to use within the payment's HTLC",
@ -2086,25 +2107,11 @@ var sendPaymentCommand = cli.Command{
Name: "debug_send",
Usage: "use the debug rHash when sending the HTLC",
},
cli.StringFlag{
Name: "pay_req",
Usage: "a zpay32 encoded payment request to fulfill",
},
cli.Int64Flag{
Name: "final_cltv_delta",
Usage: "the number of blocks the last hop has to reveal the preimage",
},
cli.Uint64Flag{
Name: "outgoing_chan_id",
Usage: "short channel id of the outgoing channel to " +
"use for the first hop of the payment",
Value: 0,
},
cli.BoolFlag{
Name: "force, f",
Usage: "will skip payment request confirmation",
},
},
),
Action: sendPayment,
}
@ -2134,26 +2141,7 @@ func retrieveFeeLimit(ctx *cli.Context) (*lnrpc.FeeLimit, error) {
return nil, nil
}
func confirmPayReq(ctx *cli.Context, client lnrpc.LightningClient, payReq string) error {
ctxb := context.Background()
req := &lnrpc.PayReqString{PayReq: payReq}
resp, err := client.DecodePayReq(ctxb, req)
if err != nil {
return err
}
// If the amount was not included in the invoice, then we let
// the payee specify the amount of satoshis they wish to send.
amt := resp.GetNumSatoshis()
if amt == 0 {
amt = ctx.Int64("amt")
if amt == 0 {
return fmt.Errorf("amount must be specified when " +
"paying a zero amount invoice")
}
}
func confirmPayReq(resp *lnrpc.PayReq, amt int64) error {
fmt.Printf("Description: %v\n", resp.GetDescription())
fmt.Printf("Amount (in satoshis): %v\n", amt)
fmt.Printf("Destination: %v\n", resp.GetDestination())
@ -2167,45 +2155,27 @@ func confirmPayReq(ctx *cli.Context, client lnrpc.LightningClient, payReq string
}
func sendPayment(ctx *cli.Context) error {
client, cleanUp := getClient(ctx)
defer cleanUp()
// Show command help if no arguments provided
if ctx.NArg() == 0 && ctx.NumFlags() == 0 {
cli.ShowCommandHelp(ctx, "sendpayment")
return nil
}
// First, we'll retrieve the fee limit value passed since it can apply
// to both ways of sending payments (with the payment request or
// providing the details manually).
feeLimit, err := retrieveFeeLimit(ctx)
if err != nil {
return err
}
// If a payment request was provided, we can exit early since all of the
// details of the payment are encoded within the request.
if ctx.IsSet("pay_req") {
if !ctx.Bool("force") {
err = confirmPayReq(ctx, client, ctx.String("pay_req"))
if err != nil {
return err
}
}
req := &lnrpc.SendRequest{
PaymentRequest: ctx.String("pay_req"),
Amt: ctx.Int64("amt"),
FeeLimit: feeLimit,
OutgoingChanId: ctx.Uint64("outgoing_chan_id"),
CltvLimit: uint32(ctx.Int(cltvLimitFlag.Name)),
}
return sendPaymentRequest(client, req)
return sendPaymentRequest(ctx, req)
}
var (
destNode []byte
amount int64
err error
)
args := ctx.Args()
@ -2241,7 +2211,6 @@ func sendPayment(ctx *cli.Context) error {
req := &lnrpc.SendRequest{
Dest: destNode,
Amt: amount,
FeeLimit: feeLimit,
}
if ctx.Bool("debug_send") && (ctx.IsSet("payment_hash") || args.Present()) {
@ -2280,10 +2249,47 @@ func sendPayment(ctx *cli.Context) error {
}
}
return sendPaymentRequest(client, req)
return sendPaymentRequest(ctx, req)
}
func sendPaymentRequest(ctx *cli.Context, req *lnrpc.SendRequest) error {
client, cleanUp := getClient(ctx)
defer cleanUp()
// First, we'll retrieve the fee limit value passed since it can apply
// to both ways of sending payments (with the payment request or
// providing the details manually).
feeLimit, err := retrieveFeeLimit(ctx)
if err != nil {
return err
}
req.FeeLimit = feeLimit
req.OutgoingChanId = ctx.Uint64("outgoing_chan_id")
req.CltvLimit = uint32(ctx.Int(cltvLimitFlag.Name))
amt := req.Amt
if req.PaymentRequest != "" {
req := &lnrpc.PayReqString{PayReq: req.PaymentRequest}
resp, err := client.DecodePayReq(context.Background(), req)
if err != nil {
return err
}
invoiceAmt := resp.GetNumSatoshis()
if invoiceAmt != 0 {
amt = invoiceAmt
}
if !ctx.Bool("force") {
err := confirmPayReq(resp, amt)
if err != nil {
return err
}
}
}
func sendPaymentRequest(client lnrpc.LightningClient, req *lnrpc.SendRequest) error {
paymentStream, err := client.SendPayment(context.Background())
if err != nil {
return err
@ -2325,45 +2331,18 @@ var payInvoiceCommand = cli.Command{
Category: "Payments",
Usage: "Pay an invoice over lightning.",
ArgsUsage: "pay_req",
Flags: []cli.Flag{
cli.StringFlag{
Name: "pay_req",
Usage: "a zpay32 encoded payment request to fulfill",
},
Flags: append(paymentFlags(),
cli.Int64Flag{
Name: "amt",
Usage: "(optional) number of satoshis to fulfill the " +
"invoice",
},
cli.Int64Flag{
Name: "fee_limit",
Usage: "maximum fee allowed in satoshis when sending " +
"the payment",
},
cli.Int64Flag{
Name: "fee_limit_percent",
Usage: "percentage of the payment's amount used as the" +
"maximum fee allowed when sending the payment",
},
cltvLimitFlag,
cli.Uint64Flag{
Name: "outgoing_chan_id",
Usage: "short channel id of the outgoing channel to " +
"use for the first hop of the payment",
Value: 0,
},
cli.BoolFlag{
Name: "force, f",
Usage: "will skip payment request confirmation",
},
},
),
Action: actionDecorator(payInvoice),
}
func payInvoice(ctx *cli.Context) error {
args := ctx.Args()
client, cleanUp := getClient(ctx)
defer cleanUp()
var payReq string
switch {
@ -2375,27 +2354,12 @@ func payInvoice(ctx *cli.Context) error {
return fmt.Errorf("pay_req argument missing")
}
feeLimit, err := retrieveFeeLimit(ctx)
if err != nil {
return err
}
if !ctx.Bool("force") {
err = confirmPayReq(ctx, client, payReq)
if err != nil {
return err
}
}
req := &lnrpc.SendRequest{
PaymentRequest: payReq,
Amt: ctx.Int64("amt"),
FeeLimit: feeLimit,
OutgoingChanId: ctx.Uint64("outgoing_chan_id"),
CltvLimit: uint32(ctx.Int(cltvLimitFlag.Name)),
}
return sendPaymentRequest(client, req)
return sendPaymentRequest(ctx, req)
}
var sendToRouteCommand = cli.Command{