lnd.xprv/cmd/lncli/commands.go

1010 lines
24 KiB
Go
Raw Normal View History

package main
import (
"bytes"
"encoding/hex"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/BitfuryLightning/tools/prefix_tree"
"github.com/BitfuryLightning/tools/rt"
"github.com/BitfuryLightning/tools/rt/graph"
2016-01-16 21:45:54 +03:00
"github.com/lightningnetwork/lnd/lnrpc"
"github.com/roasbeef/btcd/wire"
"github.com/urfave/cli"
"golang.org/x/net/context"
"github.com/BitfuryLightning/tools/rt/visualizer"
)
// TODO(roasbeef): cli logic for supporting both positional and unix style
// arguments.
func printRespJson(resp interface{}) {
b, err := json.Marshal(resp)
if err != nil {
fatal(err)
}
// TODO(roasbeef): disable 'omitempty' like behavior
var out bytes.Buffer
json.Indent(&out, b, "", "\t")
out.WriteTo(os.Stdout)
}
2015-12-30 23:19:09 +03:00
var ShellCommand = cli.Command{
Name: "shell",
Usage: "enter interactive shell",
Action: func(c *cli.Context) {
println("not implemented yet")
},
2015-12-30 23:19:09 +03:00
}
var NewAddressCommand = cli.Command{
Name: "newaddress",
Usage: "generates a new address. Three address types are supported: p2wkh, np2wkh, p2pkh",
Action: newAddress,
}
func newAddress(ctx *cli.Context) error {
client := getClient(ctx)
stringAddrType := ctx.Args().Get(0)
// Map the string encoded address type, to the concrete typed address
// type enum. An unrecognized address type will result in an error.
var addrType lnrpc.NewAddressRequest_AddressType
switch stringAddrType { // TODO(roasbeef): make them ints on the cli?
case "p2wkh":
addrType = lnrpc.NewAddressRequest_WITNESS_PUBKEY_HASH
case "np2wkh":
addrType = lnrpc.NewAddressRequest_NESTED_PUBKEY_HASH
case "p2pkh":
addrType = lnrpc.NewAddressRequest_PUBKEY_HASH
default:
return fmt.Errorf("invalid address type %v, support address type "+
"are: p2wkh, np2wkh, p2pkh", stringAddrType)
}
ctxb := context.Background()
addr, err := client.NewAddress(ctxb, &lnrpc.NewAddressRequest{
Type: addrType,
})
if err != nil {
return err
}
printRespJson(addr)
return nil
}
var SendCoinsCommand = cli.Command{
Name: "sendcoins",
Description: "send a specified amount of bitcoin to the passed address",
Usage: "sendcoins --addr=<bitcoin addresss> --amt=<num coins in satoshis>",
Flags: []cli.Flag{
cli.StringFlag{
Name: "addr",
Usage: "the bitcoin address to send coins to on-chain",
},
// TODO(roasbeef): switch to BTC on command line? int may not be sufficient
cli.IntFlag{
Name: "amt",
Usage: "the number of bitcoin denominated in satoshis to send",
},
},
Action: sendCoins,
}
func sendCoins(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
req := &lnrpc.SendCoinsRequest{
Addr: ctx.String("addr"),
Amount: int64(ctx.Int("amt")),
}
txid, err := client.SendCoins(ctxb, req)
if err != nil {
return err
}
printRespJson(txid)
return nil
}
var SendManyCommand = cli.Command{
Name: "sendmany",
Description: "create and broadcast a transaction paying the specified " +
"amount(s) to the passed address(es)",
Usage: `sendmany '{"ExampleAddr": NumCoinsInSatoshis, "SecondAddr": NumCoins}'`,
Action: sendMany,
}
func sendMany(ctx *cli.Context) error {
var amountToAddr map[string]int64
jsonMap := ctx.Args().Get(0)
if err := json.Unmarshal([]byte(jsonMap), &amountToAddr); err != nil {
return err
}
ctxb := context.Background()
client := getClient(ctx)
txid, err := client.SendMany(ctxb, &lnrpc.SendManyRequest{amountToAddr})
if err != nil {
return err
}
printRespJson(txid)
return nil
}
var ConnectCommand = cli.Command{
Name: "connect",
Usage: "connect to a remote lnd peer: <lnid>@host",
Action: connectPeer,
}
func connectPeer(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
targetAddress := ctx.Args().Get(0)
splitAddr := strings.Split(targetAddress, "@")
if len(splitAddr) != 2 {
return fmt.Errorf("target address expected in format: lnid@host:port")
}
addr := &lnrpc.LightningAddress{
PubKeyHash: splitAddr[0],
Host: splitAddr[1],
}
req := &lnrpc.ConnectPeerRequest{addr}
lnid, err := client.ConnectPeer(ctxb, req)
if err != nil {
return err
}
printRespJson(lnid)
return nil
}
// TODO(roasbeef): default number of confirmations
var OpenChannelCommand = cli.Command{
Name: "openchannel",
Description: "Attempt to open a new channel to an existing peer, " +
"optionally blocking until the channel is 'open'. Once the " +
"channel is open, a channelPoint (txid:vout) of the funding " +
"output is returned. NOTE: peer_id and lightning_id are " +
"mutually exclusive, only one should be used, not both.",
Usage: "openchannel --peer_id=X --local_amt=N --remote_amt=N --num_confs=N",
Flags: []cli.Flag{
cli.IntFlag{
Name: "peer_id",
Usage: "the relative id of the peer to open a channel with",
},
cli.StringFlag{
Name: "lightning_id",
Usage: "the lightning id of the target peer",
},
cli.IntFlag{
Name: "local_amt",
Usage: "the number of satoshis the wallet should commit to the channel",
},
cli.IntFlag{
Name: "remote_amt",
Usage: "the number of satoshis the remote peer should commit to the channel",
},
cli.IntFlag{
Name: "num_confs",
Usage: "the number of confirmations required before the " +
"channel is considered 'open'",
},
cli.BoolFlag{
Name: "block",
Usage: "block and wait until the channel is fully open",
},
},
Action: openChannel,
}
func openChannel(ctx *cli.Context) error {
// TODO(roasbeef): add deadline to context
ctxb := context.Background()
client := getClient(ctx)
if ctx.Int("peer_id") != 0 && ctx.String("lightning_id") != "" {
return fmt.Errorf("both peer_id and lightning_id cannot be set " +
"at the same time, only one can be specified")
}
req := &lnrpc.OpenChannelRequest{
LocalFundingAmount: int64(ctx.Int("local_amt")),
RemoteFundingAmount: int64(ctx.Int("remote_amt")),
NumConfs: uint32(ctx.Int("num_confs")),
}
if ctx.Int("peer_id") != 0 {
req.TargetPeerId = int32(ctx.Int("peer_id"))
} else {
lnID, err := hex.DecodeString(ctx.String("lightning_id"))
if err != nil {
return fmt.Errorf("unable to decode lightning id: %v", err)
}
req.TargetNode = lnID
}
stream, err := client.OpenChannel(ctxb, req)
if err != nil {
return err
}
if !ctx.Bool("block") {
return nil
}
for {
resp, err := stream.Recv()
if err == io.EOF {
return nil
} else if err != nil {
return err
}
switch update := resp.Update.(type) {
case *lnrpc.OpenStatusUpdate_ChanOpen:
channelPoint := update.ChanOpen.ChannelPoint
txid, err := wire.NewShaHash(channelPoint.FundingTxid)
if err != nil {
return err
}
index := channelPoint.OutputIndex
printRespJson(struct {
ChannelPoint string `json:"channel_point"`
}{
ChannelPoint: fmt.Sprintf("%v:%v", txid, index),
},
)
}
}
return nil
}
// TODO(roasbeef): also allow short relative channel ID.
var CloseChannelCommand = cli.Command{
Name: "closechannel",
Description: "Close an existing channel. The channel can be closed either " +
"cooperatively, or uncooperatively (forced).",
Usage: "closechannel funding_txid output_index time_limit allow_force",
Flags: []cli.Flag{
cli.StringFlag{
Name: "funding_txid",
Usage: "the txid of the channel's funding transaction",
},
cli.IntFlag{
Name: "output_index",
Usage: "the output index for the funding output of the funding " +
"transaction",
},
cli.StringFlag{
Name: "time_limit",
Usage: "a relative deadline afterwhich the attempt should be " +
"abandonded",
},
cli.BoolFlag{
Name: "force",
Usage: "after the time limit has passed, attempt an " +
"uncooperative closure",
},
cli.BoolFlag{
Name: "block",
Usage: "block until the channel is closed",
},
},
Action: closeChannel,
}
func closeChannel(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
txid, err := wire.NewShaHashFromStr(ctx.String("funding_txid"))
if err != nil {
return err
}
// TODO(roasbeef): implement time deadline within server
req := &lnrpc.CloseChannelRequest{
ChannelPoint: &lnrpc.ChannelPoint{
FundingTxid: txid[:],
OutputIndex: uint32(ctx.Int("output_index")),
},
Force: ctx.Bool("force"),
}
stream, err := client.CloseChannel(ctxb, req)
if err != nil {
return err
}
if !ctx.Bool("block") {
return nil
}
for {
resp, err := stream.Recv()
if err == io.EOF {
return nil
} else if err != nil {
return err
}
switch update := resp.Update.(type) {
case *lnrpc.CloseStatusUpdate_ChanClose:
closingHash := update.ChanClose.ClosingTxid
txid, err := wire.NewShaHash(closingHash)
if err != nil {
return err
}
printRespJson(struct {
ClosingTXID string `json:"closing_txid"`
}{
ClosingTXID: txid.String(),
})
}
}
return nil
}
var ListPeersCommand = cli.Command{
Name: "listpeers",
Description: "List all active, currently connected peers.",
Action: listPeers,
}
func listPeers(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
req := &lnrpc.ListPeersRequest{}
resp, err := client.ListPeers(ctxb, req)
if err != nil {
return err
}
printRespJson(resp)
return nil
}
var WalletBalanceCommand = cli.Command{
Name: "walletbalance",
Description: "compute and display the wallet's current balance",
Usage: "walletbalance --witness_only=[true|false]",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "witness_only",
Usage: "if only witness outputs should be considered when " +
"calculating the wallet's balance",
},
},
Action: walletBalance,
}
func walletBalance(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
req := &lnrpc.WalletBalanceRequest{
WitnessOnly: ctx.Bool("witness_only"),
}
resp, err := client.WalletBalance(ctxb, req)
if err != nil {
return err
}
printRespJson(resp)
return nil
}
var ChannelBalanceCommand = cli.Command{
Name: "channelbalance",
Description: "returns the sum of the total available channel balance across all open channels",
Action: channelBalance,
}
func channelBalance(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
req := &lnrpc.ChannelBalanceRequest{}
resp, err := client.ChannelBalance(ctxb, req)
if err != nil {
return err
}
printRespJson(resp)
return nil
}
var GetInfoCommand = cli.Command{
Name: "getinfo",
Description: "returns basic information related to the active daemon",
Action: getInfo,
}
func getInfo(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
req := &lnrpc.GetInfoRequest{}
resp, err := client.GetInfo(ctxb, req)
if err != nil {
return err
}
printRespJson(resp)
return nil
}
var PendingChannelsCommand = cli.Command{
Name: "pendingchannels",
Description: "display information pertaining to pending channels",
Usage: "pendingchannels --status=[all|opening|closing]",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "open, o",
Usage: "display the status of new pending channels",
},
cli.BoolFlag{
Name: "close, c",
Usage: "display the status of channels being closed",
},
cli.BoolFlag{
Name: "all, a",
Usage: "display the status of channels in the " +
"process of being opened or closed",
},
},
Action: pendingChannels,
}
func pendingChannels(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
var channelStatus lnrpc.ChannelStatus
switch {
case ctx.Bool("all"):
channelStatus = lnrpc.ChannelStatus_ALL
case ctx.Bool("open"):
channelStatus = lnrpc.ChannelStatus_OPENING
case ctx.Bool("close"):
channelStatus = lnrpc.ChannelStatus_CLOSING
default:
channelStatus = lnrpc.ChannelStatus_ALL
}
req := &lnrpc.PendingChannelRequest{channelStatus}
resp, err := client.PendingChannels(ctxb, req)
if err != nil {
return err
}
printRespJson(resp)
return nil
}
var SendPaymentCommand = cli.Command{
Name: "sendpayment",
Description: "send a payment over lightning",
Usage: "sendpayment --dest=[node_id] --amt=[in_satoshis]",
Flags: []cli.Flag{
cli.StringFlag{
Name: "dest, d",
Usage: "lightning address of the payment recipient",
},
cli.IntFlag{ // TODO(roasbeef): float64?
Name: "amt, a",
Usage: "number of satoshis to send",
},
cli.StringFlag{
Name: "payment_hash, r",
Usage: "the hash to use within the payment's HTLC",
},
cli.BoolFlag{
Name: "fast, f",
Usage: "skip the HTLC trickle logic, immediately creating a " +
"new commitment",
},
},
Action: sendPaymentCommand,
}
func sendPaymentCommand(ctx *cli.Context) error {
client := getClient(ctx)
destAddr, err := hex.DecodeString(ctx.String("dest"))
if err != nil {
return err
}
rHash, err := hex.DecodeString(ctx.String("payment_hash"))
if err != nil {
return err
}
if len(rHash) != 32 {
return fmt.Errorf("payment hash must be exactly 32 bytes, is "+
"instead %v", len(rHash))
}
req := &lnrpc.SendRequest{
Dest: destAddr,
Amt: int64(ctx.Int("amt")),
PaymentHash: rHash[:],
FastSend: ctx.Bool("fast"),
}
paymentStream, err := client.SendPayment(context.Background())
if err != nil {
return err
}
if err := paymentStream.Send(req); err != nil {
return err
}
resp, err := paymentStream.Recv()
if err != nil {
return err
}
paymentStream.CloseSend()
printRespJson(resp)
return nil
}
var AddInvoiceCommand = cli.Command{
Name: "addinvoice",
Description: "add a new invoice, expressing intent for a future payment",
Usage: "addinvoice --memo=[note] --receipt=[sig+contract hash] --value=[in_satoshis] --preimage=[32_byte_hash]",
Flags: []cli.Flag{
cli.StringFlag{
Name: "memo",
Usage: "an optional memo to attach along with the invoice",
},
cli.StringFlag{
Name: "receipt",
Usage: "an optional cryptographic receipt of payment",
},
cli.StringFlag{
Name: "preimage",
Usage: "the hex-encoded preimage which will allow settling an incoming HTLC payable to this preimage",
},
cli.IntFlag{
Name: "value",
Usage: "the value of this invoice in satoshis",
},
},
Action: addInvoice,
}
func addInvoice(ctx *cli.Context) error {
client := getClient(ctx)
preimage, err := hex.DecodeString(ctx.String("preimage"))
if err != nil {
return fmt.Errorf("unable to parse preimage: %v", err)
}
receipt, err := hex.DecodeString(ctx.String("receipt"))
if err != nil {
return fmt.Errorf("unable to parse receipt: %v", err)
}
invoice := &lnrpc.Invoice{
Memo: ctx.String("memo"),
Receipt: receipt,
RPreimage: preimage,
Value: int64(ctx.Int("value")),
}
resp, err := client.AddInvoice(context.Background(), invoice)
if err != nil {
return err
}
printRespJson(struct {
RHash string `json:"r_hash"`
}{
RHash: hex.EncodeToString(resp.RHash),
})
return nil
}
var LookupInvoiceCommand = cli.Command{
Name: "lookupinvoice",
Description: "lookup an existing invoice by its payment hash",
Usage: "lookupinvoice --rhash=[32_byte_hash]",
Flags: []cli.Flag{
cli.StringFlag{
Name: "rhash",
Usage: "the payment hash of the invoice to query for, the hash " +
"should be a hex-encoded string",
},
},
Action: lookupInvoice,
}
func lookupInvoice(ctx *cli.Context) error {
client := getClient(ctx)
rHash, err := hex.DecodeString(ctx.String("rhash"))
if err != nil {
return err
}
req := &lnrpc.PaymentHash{
RHash: rHash,
}
invoice, err := client.LookupInvoice(context.Background(), req)
if err != nil {
return err
}
printRespJson(invoice)
return nil
}
var ListInvoicesCommand = cli.Command{
Name: "listinvoices",
Usage: "listinvoice --pending_only=[true|false]",
Description: "list all invoices currently stored",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "pending_only",
Usage: "toggles if all invoices should be returned, or only " +
"those that are currently unsettled",
},
},
Action: listInvoices,
}
func listInvoices(ctx *cli.Context) error {
client := getClient(ctx)
pendingOnly := true
if !ctx.Bool("pending_only") {
pendingOnly = false
}
req := &lnrpc.ListInvoiceRequest{
PendingOnly: pendingOnly,
}
invoices, err := client.ListInvoices(context.Background(), req)
if err != nil {
return err
}
printRespJson(invoices)
return nil
}
var ShowRoutingTableCommand = cli.Command{
Name: "showroutingtable",
Description: "shows routing table for a node",
Usage: "showroutingtable text|image",
Subcommands: []cli.Command{
{
Name: "text",
Usage: "[--table|--human]",
Description: "Show routing table in textual format. By default in JSON",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "table",
Usage: "Print channels in routing table in table format.",
},
cli.BoolFlag{
Name: "human",
Usage: "Print channels in routing table in table format. Output lightning_id partially - only a few first symbols which uniquelly identifies it.",
},
},
Action: showRoutingTableAsText,
},
{
Name: "image",
Usage: "[--type <IMAGE_TYPE>] [--dest OUTPUT_FILE] [--open]",
Description: "Create image with graphical representation of routing table",
Flags: []cli.Flag{
cli.StringFlag{
Name: "type",
Usage: "Type of image file. Use one of: http://www.graphviz.org/content/output-formats. Usage of this option supresses textual output",
},
cli.StringFlag{
Name: "dest",
Usage: "Specifies where to save the generated file. If don't specified use os.TempDir Usage of this option supresses textual output",
},
cli.BoolFlag{
Name: "open",
Usage: "Open generated file automatically. Uses command line \"open\" command",
},
},
Action: showRoutingTableAsImage,
},
},
}
func getRoutingTable(ctxb context.Context, client lnrpc.LightningClient) (*rt.RoutingTable, error) {
req := &lnrpc.ShowRoutingTableRequest{}
resp, err := client.ShowRoutingTable(ctxb, req)
if err != nil {
return nil, err
}
r := rt.NewRoutingTable()
for _, channel := range resp.Channels {
r.AddChannel(
graph.NewID(channel.Id1),
graph.NewID(channel.Id2),
graph.NewEdgeID(channel.Outpoint),
&rt.ChannelInfo{channel.Capacity, channel.Weight},
)
}
return r, nil
}
func showRoutingTableAsText(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
r, err := getRoutingTable(ctxb, client)
if err != nil {
return err
}
if ctx.Bool("table") && ctx.Bool("human") {
return fmt.Errorf("--table and --human cannot be used at the same time")
}
if ctx.Bool("table") {
printRTAsTable(r, false)
} else if ctx.Bool("human") {
printRTAsTable(r, true)
} else {
printRTAsJSON(r)
}
return nil
}
func showRoutingTableAsImage(ctx *cli.Context) error {
ctxb := context.Background()
client := getClient(ctx)
r, err := getRoutingTable(ctxb, client)
if err != nil {
return err
}
reqGetInfo := &lnrpc.GetInfoRequest{}
respGetInfo, err := client.GetInfo(ctxb, reqGetInfo)
if err != nil {
return err
}
selfLightningId, err := hex.DecodeString(respGetInfo.LightningId)
if err != nil {
return err
}
imgType := ctx.String("type")
imgDest := ctx.String("dest")
if imgType == "" && imgDest == "" {
return fmt.Errorf("One or both of --type or --dest should be specified")
}
tempFile, err := ioutil.TempFile("", "")
if err != nil {
return err
}
var imageFile *os.File
// if the type is not specified explicitly parse the filename
if imgType == "" {
imgType = filepath.Ext(imgDest)[1:]
}
// if the filename is not specified explicitly use tempfile
if imgDest == "" {
imageFile, err = TempFileWithSuffix("", "rt_", "."+imgType)
if err != nil {
return err
}
} else {
imageFile, err = os.Create(imgDest)
if err != nil {
return err
}
}
if _, ok := visualizer.SupportedFormatsAsMap()[imgType]; !ok {
fmt.Printf("Format: '%v' not recognized. Use one of: %v\n", imgType, visualizer.SupportedFormats())
return nil
}
// generate description graph by dot language
err = writeToTempFile(r, tempFile, selfLightningId)
if err != nil {
return err
}
err = writeToImageFile(tempFile, imageFile)
if err != nil {
return err
}
if ctx.Bool("open") {
if err := visualizer.Open(imageFile); err != nil {
return err
}
}
return nil
}
func writeToTempFile(r *rt.RoutingTable, file *os.File, self []byte) error {
slc := []graph.ID{graph.NewID(string(self))}
viz := visualizer.New(r.G, slc, nil, nil)
viz.ApplyToNode = func(s string) string { return hex.EncodeToString([]byte(s)) }
viz.ApplyToEdge = func(info interface{}) string {
if info, ok := info.(*rt.ChannelInfo); ok {
return fmt.Sprintf(`"%v"`, info.Capacity())
}
return "nil"
}
// need to call method if plan to use shortcut, autocomplete, etc
viz.BuildPrefixTree()
viz.EnableShortcut(true)
dot := viz.Draw()
_, err := file.Write([]byte(dot))
if err != nil {
return err
}
err = file.Sync()
if err != nil {
return err
}
return nil
}
func writeToImageFile(TempFile, ImageFile *os.File) error {
err := visualizer.Run("neato", TempFile, ImageFile)
if err != nil {
return err
}
err = TempFile.Close()
if err != nil {
return err
}
err = os.Remove(TempFile.Name())
if err != nil {
return err
}
err = ImageFile.Close()
if err != nil {
return err
}
return nil
}
// get around a bug in the standard library, add suffix param
func TempFileWithSuffix(dir, prefix, suffix string) (*os.File, error) {
f, err := ioutil.TempFile(dir, prefix)
if err != nil {
return nil, err
}
defer os.Remove(f.Name())
f, err = os.Create(f.Name() + suffix)
return f, err
}
// Prints routing table in human readable table format
func printRTAsTable(r *rt.RoutingTable, humanForm bool) {
// Minimum length of data part to which name can be shortened
var minLen int
var tmpl string
var lightningIdTree, edgeIdTree prefix_tree.PrefixTree
if humanForm {
tmpl = "%-10v %-10v %-10v %-10v %-10v\n"
minLen = 6
} else {
tmpl = "%-64v %-64v %-66v %-10v %-10v\n"
minLen = 100
}
fmt.Printf(tmpl, "ID1", "ID2", "Outpoint", "Capacity", "Weight")
channels := r.AllChannels()
if humanForm {
// Generate prefix tree for shortcuts
lightningIdTree = prefix_tree.NewPrefixTree()
for _, node := range r.Nodes() {
lightningIdTree.Add(hex.EncodeToString([]byte(node.String())))
}
edgeIdTree = prefix_tree.NewPrefixTree()
for _, channel := range channels {
edgeIdTree.Add(channel.EdgeID.String())
}
}
for _, channel := range channels {
var source, target, edgeId string
sourceHex := hex.EncodeToString([]byte(channel.Id1.String()))
targetHex := hex.EncodeToString([]byte(channel.Id2.String()))
edgeIdRaw := channel.EdgeID.String()
if humanForm {
source = getShortcut(lightningIdTree, sourceHex, minLen)
target = getShortcut(lightningIdTree, targetHex, minLen)
edgeId = getShortcut(edgeIdTree, edgeIdRaw, minLen)
} else {
source = sourceHex
target = targetHex
edgeId = edgeIdRaw
}
fmt.Printf(tmpl, source, target, edgeId, channel.Info.Cpt, channel.Info.Wgt)
}
}
func getShortcut(tree prefix_tree.PrefixTree, s string, minLen int) string {
s1, err := tree.Shortcut(s)
if err != nil || s == s1 {
return s
}
if len(s1) < minLen && minLen < len(s) {
s1 = s[:minLen]
}
shortcut := fmt.Sprintf("%v...", s1)
if len(shortcut) >= len(s) {
shortcut = s
}
return shortcut
}
func printRTAsJSON(r *rt.RoutingTable) {
type ChannelDesc struct {
ID1 string `json:"lightning_id1"`
ID2 string `json:"lightning_id2"`
EdgeId string `json:"outpoint"`
Capacity int64 `json:"capacity"`
Weight float64 `json:"weight"`
}
var channels struct {
Channels []ChannelDesc `json:"channels"`
}
channelsRaw := r.AllChannels()
channels.Channels = make([]ChannelDesc, 0, len(channelsRaw))
for _, channelRaw := range channelsRaw {
sourceHex := hex.EncodeToString([]byte(channelRaw.Id1.String()))
targetHex := hex.EncodeToString([]byte(channelRaw.Id2.String()))
channels.Channels = append(channels.Channels,
ChannelDesc{
ID1: sourceHex,
ID2: targetHex,
EdgeId: channelRaw.EdgeID.String(),
Weight: channelRaw.Info.Weight(),
Capacity: channelRaw.Info.Capacity(),
},
)
}
printRespJson(channels)
}