cmd+loopd: move loopd to new folder loopd

This commit is contained in:
Johan T. Halseth 2020-01-03 14:01:31 +01:00
parent 1ea58ad3d6
commit 644b5b16f7
No known key found for this signature in database
GPG key ID: 15BAADA29DA20D26
8 changed files with 7 additions and 10 deletions

View file

@ -1,66 +0,0 @@
package main
import (
"path/filepath"
"github.com/btcsuite/btcutil"
)
var (
loopDirBase = btcutil.AppDataDir("loop", false)
defaultLogLevel = "info"
defaultLogDirname = "logs"
defaultLogFilename = "loopd.log"
defaultLogDir = filepath.Join(loopDirBase, defaultLogDirname)
defaultMaxLogFiles = 3
defaultMaxLogFileSize = 10
)
type lndConfig struct {
Host string `long:"host" description:"lnd instance rpc address"`
MacaroonDir string `long:"macaroondir" description:"Path to the directory containing all the required lnd macaroons"`
TLSPath string `long:"tlspath" description:"Path to lnd tls certificate"`
}
type viewParameters struct{}
type config struct {
ShowVersion bool `short:"V" long:"version" description:"Display version information and exit"`
Insecure bool `long:"insecure" description:"disable tls"`
Network string `long:"network" description:"network to run on" choice:"regtest" choice:"testnet" choice:"mainnet" choice:"simnet"`
SwapServer string `long:"swapserver" description:"swap server address host:port"`
TLSPathSwapSrv string `long:"tlspathswapserver" description:"Path to swap server tls certificate. Only needed if the swap server uses a self-signed certificate."`
RPCListen string `long:"rpclisten" description:"Address to listen on for gRPC clients"`
RESTListen string `long:"restlisten" description:"Address to listen on for REST clients"`
LogDir string `long:"logdir" description:"Directory to log output."`
MaxLogFiles int `long:"maxlogfiles" description:"Maximum logfiles to keep (0 for no rotation)"`
MaxLogFileSize int `long:"maxlogfilesize" description:"Maximum logfile size in MB"`
DebugLevel string `short:"d" long:"debuglevel" description:"Logging level for all subsystems {trace, debug, info, warn, error, critical} -- You may also specify <subsystem>=<level>,<subsystem2>=<level>,... to set the log level for individual subsystems -- Use show to list available subsystems"`
Lnd *lndConfig `group:"lnd" namespace:"lnd"`
View viewParameters `command:"view" alias:"v" description:"View all swaps in the database. This command can only be executed when loopd is not running."`
}
const (
mainnetServer = "swap.lightning.today:11009"
testnetServer = "test.swap.lightning.today:11009"
)
var defaultConfig = config{
Network: "mainnet",
RPCListen: "localhost:11010",
RESTListen: "localhost:8081",
Insecure: false,
LogDir: defaultLogDir,
MaxLogFiles: defaultMaxLogFiles,
MaxLogFileSize: defaultMaxLogFileSize,
DebugLevel: defaultLogLevel,
Lnd: &lndConfig{
Host: "localhost:10009",
},
}

View file

@ -1,194 +0,0 @@
package main
import (
"context"
"errors"
"fmt"
"net"
"net/http"
"os"
"os/signal"
"runtime/pprof"
"sync"
"time"
proxy "github.com/grpc-ecosystem/grpc-gateway/runtime"
"github.com/lightninglabs/loop"
"github.com/lightninglabs/loop/looprpc"
"google.golang.org/grpc"
)
// daemon runs loopd in daemon mode. It will listen for grpc connections,
// execute commands and pass back swap status information.
func daemon(config *config) error {
lnd, err := getLnd(config.Network, config.Lnd)
if err != nil {
return err
}
defer lnd.Close()
// If no swap server is specified, use the default addresses for mainnet
// and testnet.
if config.SwapServer == "" {
switch config.Network {
case "mainnet":
config.SwapServer = mainnetServer
case "testnet":
config.SwapServer = testnetServer
default:
return errors.New("no swap server address specified")
}
}
log.Infof("Swap server address: %v", config.SwapServer)
// Create an instance of the loop client library.
swapClient, cleanup, err := getClient(
config.Network, config.SwapServer, config.Insecure,
config.TLSPathSwapSrv, &lnd.LndServices,
)
if err != nil {
return err
}
defer cleanup()
// Retrieve all currently existing swaps from the database.
swapsList, err := swapClient.FetchSwaps()
if err != nil {
return err
}
for _, s := range swapsList {
swaps[s.SwapHash] = *s
}
// Instantiate the loopd gRPC server.
server := swapClientServer{
impl: swapClient,
lnd: &lnd.LndServices,
}
serverOpts := []grpc.ServerOption{}
grpcServer := grpc.NewServer(serverOpts...)
looprpc.RegisterSwapClientServer(grpcServer, &server)
// Next, start the gRPC server listening for HTTP/2 connections.
log.Infof("Starting gRPC listener")
grpcListener, err := net.Listen("tcp", config.RPCListen)
if err != nil {
return fmt.Errorf("RPC server unable to listen on %s",
config.RPCListen)
}
defer grpcListener.Close()
// We'll also create and start an accompanying proxy to serve clients
// through REST.
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
mux := proxy.NewServeMux()
proxyOpts := []grpc.DialOption{grpc.WithInsecure()}
err = looprpc.RegisterSwapClientHandlerFromEndpoint(
ctx, mux, config.RPCListen, proxyOpts,
)
if err != nil {
return err
}
log.Infof("Starting REST proxy listener")
restListener, err := net.Listen("tcp", config.RESTListen)
if err != nil {
return fmt.Errorf("REST proxy unable to listen on %s",
config.RESTListen)
}
defer restListener.Close()
proxy := &http.Server{Handler: mux}
go proxy.Serve(restListener)
statusChan := make(chan loop.SwapInfo)
mainCtx, cancel := context.WithCancel(context.Background())
var wg sync.WaitGroup
// Start the swap client itself.
wg.Add(1)
go func() {
defer wg.Done()
log.Infof("Starting swap client")
err := swapClient.Run(mainCtx, statusChan)
if err != nil {
log.Error(err)
}
log.Infof("Swap client stopped")
log.Infof("Stopping gRPC server")
grpcServer.Stop()
cancel()
}()
// Start a goroutine that broadcasts swap updates to clients.
wg.Add(1)
go func() {
defer wg.Done()
log.Infof("Waiting for updates")
for {
select {
case swap := <-statusChan:
swapsLock.Lock()
swaps[swap.SwapHash] = swap
for _, subscriber := range subscribers {
select {
case subscriber <- swap:
case <-mainCtx.Done():
return
}
}
swapsLock.Unlock()
case <-mainCtx.Done():
return
}
}
}()
// Start the grpc server.
wg.Add(1)
go func() {
defer wg.Done()
log.Infof("RPC server listening on %s", grpcListener.Addr())
log.Infof("REST proxy listening on %s", restListener.Addr())
err = grpcServer.Serve(grpcListener)
if err != nil {
log.Error(err)
}
}()
interruptChannel := make(chan os.Signal, 1)
signal.Notify(interruptChannel, os.Interrupt)
// Run until the users terminates loopd or an error occurred.
select {
case <-interruptChannel:
log.Infof("Received SIGINT (Ctrl+C).")
// TODO: Remove debug code.
// Debug code to dump goroutines on hanging exit.
go func() {
time.Sleep(5 * time.Second)
pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
}()
cancel()
case <-mainCtx.Done():
}
wg.Wait()
return nil
}

View file

@ -1,42 +0,0 @@
package main
import (
"github.com/btcsuite/btclog"
"github.com/lightninglabs/loop"
"github.com/lightninglabs/loop/lndclient"
"github.com/lightninglabs/loop/loopdb"
"github.com/lightninglabs/loop/lsat"
"github.com/lightningnetwork/lnd/build"
)
var (
logWriter = build.NewRotatingLogWriter()
log = build.NewSubLogger("LOOPD", logWriter.GenSubLogger)
)
func init() {
setSubLogger("LOOPD", log, nil)
addSubLogger("LOOP", loop.UseLogger)
addSubLogger("LNDC", lndclient.UseLogger)
addSubLogger("STORE", loopdb.UseLogger)
addSubLogger(lsat.Subsystem, lsat.UseLogger)
}
// addSubLogger is a helper method to conveniently create and register the
// logger of a sub system.
func addSubLogger(subsystem string, useLogger func(btclog.Logger)) {
logger := build.NewSubLogger(subsystem, logWriter.GenSubLogger)
setSubLogger(subsystem, logger, useLogger)
}
// setSubLogger is a helper method to conveniently register the logger of a sub
// system.
func setSubLogger(subsystem string, logger btclog.Logger,
useLogger func(btclog.Logger)) {
logWriter.RegisterSubLogger(subsystem, logger)
if useLogger != nil {
useLogger(logger)
}
}

View file

@ -1,119 +0,0 @@
package main
import (
"fmt"
"os"
"path/filepath"
"strings"
"sync"
"github.com/jessevdk/go-flags"
"github.com/lightninglabs/loop"
"github.com/lightningnetwork/lnd/build"
"github.com/lightningnetwork/lnd/lntypes"
)
const (
defaultConfTarget = int32(6)
)
var (
defaultConfigFilename = "loopd.conf"
swaps = make(map[lntypes.Hash]loop.SwapInfo)
subscribers = make(map[int]chan<- interface{})
nextSubscriberID int
swapsLock sync.Mutex
)
func main() {
err := start()
if err != nil {
fmt.Println(err)
}
}
func start() error {
config := defaultConfig
// Parse command line flags.
parser := flags.NewParser(&config, flags.Default)
parser.SubcommandsOptional = true
_, err := parser.Parse()
if e, ok := err.(*flags.Error); ok && e.Type == flags.ErrHelp {
return nil
}
if err != nil {
return err
}
// Parse ini file.
loopDir := filepath.Join(loopDirBase, config.Network)
if err := os.MkdirAll(loopDir, os.ModePerm); err != nil {
return err
}
configFile := filepath.Join(loopDir, defaultConfigFilename)
if err := flags.IniParse(configFile, &config); err != nil {
// If it's a parsing related error, then we'll return
// immediately, otherwise we can proceed as possibly the config
// file doesn't exist which is OK.
if _, ok := err.(*flags.IniError); ok {
return err
}
}
// Parse command line flags again to restore flags overwritten by ini
// parse.
_, err = parser.Parse()
if err != nil {
return err
}
// Show the version and exit if the version flag was specified.
appName := filepath.Base(os.Args[0])
appName = strings.TrimSuffix(appName, filepath.Ext(appName))
if config.ShowVersion {
fmt.Println(appName, "version", loop.Version())
os.Exit(0)
}
// Special show command to list supported subsystems and exit.
if config.DebugLevel == "show" {
fmt.Printf("Supported subsystems: %v\n",
logWriter.SupportedSubsystems())
os.Exit(0)
}
// Append the network type to the log directory so it is
// "namespaced" per network in the same fashion as the data directory.
config.LogDir = filepath.Join(config.LogDir, config.Network)
// Initialize logging at the default logging level.
err = logWriter.InitLogRotator(
filepath.Join(config.LogDir, defaultLogFilename),
config.MaxLogFileSize, config.MaxLogFiles,
)
if err != nil {
return err
}
err = build.ParseAndSetDebugLevels(config.DebugLevel, logWriter)
if err != nil {
return err
}
// Print the version before executing either primary directive.
log.Infof("Version: %v", loop.Version())
// Execute command.
if parser.Active == nil {
return daemon(&config)
}
if parser.Active.Name == "view" {
return view(&config)
}
return fmt.Errorf("unimplemented command %v", parser.Active.Name)
}

View file

@ -1,395 +0,0 @@
package main
import (
"context"
"errors"
"fmt"
"sort"
"time"
"github.com/lightningnetwork/lnd/queue"
"github.com/lightninglabs/loop"
"github.com/lightninglabs/loop/lndclient"
"github.com/lightninglabs/loop/loopdb"
"github.com/lightninglabs/loop/swap"
"github.com/btcsuite/btcutil"
"github.com/lightninglabs/loop/looprpc"
)
const (
completedSwapsCount = 5
// minConfTarget is the minimum confirmation target we'll allow clients
// to specify. This is driven by the minimum confirmation target allowed
// by the backing fee estimator.
minConfTarget = 2
)
// swapClientServer implements the grpc service exposed by loopd.
type swapClientServer struct {
impl *loop.Client
lnd *lndclient.LndServices
}
// LoopOut initiates an loop out swap with the given parameters. The call
// returns after the swap has been set up with the swap server. From that point
// onwards, progress can be tracked via the LoopOutStatus stream that is
// returned from Monitor().
func (s *swapClientServer) LoopOut(ctx context.Context,
in *looprpc.LoopOutRequest) (
*looprpc.SwapResponse, error) {
log.Infof("Loop out request received")
sweepConfTarget, err := validateConfTarget(
in.SweepConfTarget, loop.DefaultSweepConfTarget,
)
if err != nil {
return nil, err
}
var sweepAddr btcutil.Address
if in.Dest == "" {
// Generate sweep address if none specified.
var err error
sweepAddr, err = s.lnd.WalletKit.NextAddr(context.Background())
if err != nil {
return nil, fmt.Errorf("NextAddr error: %v", err)
}
} else {
var err error
sweepAddr, err = btcutil.DecodeAddress(
in.Dest, s.lnd.ChainParams,
)
if err != nil {
return nil, fmt.Errorf("decode address: %v", err)
}
}
req := &loop.OutRequest{
Amount: btcutil.Amount(in.Amt),
DestAddr: sweepAddr,
MaxMinerFee: btcutil.Amount(in.MaxMinerFee),
MaxPrepayAmount: btcutil.Amount(in.MaxPrepayAmt),
MaxPrepayRoutingFee: btcutil.Amount(in.MaxPrepayRoutingFee),
MaxSwapRoutingFee: btcutil.Amount(in.MaxSwapRoutingFee),
MaxSwapFee: btcutil.Amount(in.MaxSwapFee),
SweepConfTarget: sweepConfTarget,
SwapPublicationDeadline: time.Unix(
int64(in.SwapPublicationDeadline), 0,
),
}
if in.LoopOutChannel != 0 {
req.LoopOutChannel = &in.LoopOutChannel
}
hash, htlc, err := s.impl.LoopOut(ctx, req)
if err != nil {
log.Errorf("LoopOut: %v", err)
return nil, err
}
return &looprpc.SwapResponse{
Id: hash.String(),
HtlcAddress: htlc.String(),
}, nil
}
func (s *swapClientServer) marshallSwap(loopSwap *loop.SwapInfo) (
*looprpc.SwapStatus, error) {
var state looprpc.SwapState
switch loopSwap.State {
case loopdb.StateInitiated:
state = looprpc.SwapState_INITIATED
case loopdb.StatePreimageRevealed:
state = looprpc.SwapState_PREIMAGE_REVEALED
case loopdb.StateHtlcPublished:
state = looprpc.SwapState_HTLC_PUBLISHED
case loopdb.StateInvoiceSettled:
state = looprpc.SwapState_INVOICE_SETTLED
case loopdb.StateSuccess:
state = looprpc.SwapState_SUCCESS
default:
// Return less granular status over rpc.
state = looprpc.SwapState_FAILED
}
var swapType looprpc.SwapType
switch loopSwap.SwapType {
case swap.TypeIn:
swapType = looprpc.SwapType_LOOP_IN
case swap.TypeOut:
swapType = looprpc.SwapType_LOOP_OUT
default:
return nil, errors.New("unknown swap type")
}
return &looprpc.SwapStatus{
Amt: int64(loopSwap.AmountRequested),
Id: loopSwap.SwapHash.String(),
State: state,
InitiationTime: loopSwap.InitiationTime.UnixNano(),
LastUpdateTime: loopSwap.LastUpdate.UnixNano(),
HtlcAddress: loopSwap.HtlcAddress.EncodeAddress(),
Type: swapType,
CostServer: int64(loopSwap.Cost.Server),
CostOnchain: int64(loopSwap.Cost.Onchain),
CostOffchain: int64(loopSwap.Cost.Offchain),
}, nil
}
// Monitor will return a stream of swap updates for currently active swaps.
func (s *swapClientServer) Monitor(in *looprpc.MonitorRequest,
server looprpc.SwapClient_MonitorServer) error {
log.Infof("Monitor request received")
send := func(info loop.SwapInfo) error {
rpcSwap, err := s.marshallSwap(&info)
if err != nil {
return err
}
return server.Send(rpcSwap)
}
// Start a notification queue for this subscriber.
queue := queue.NewConcurrentQueue(20)
queue.Start()
// Add this subscriber to the global subscriber list. Also create a
// snapshot of all pending and completed swaps within the lock, to
// prevent subscribers from receiving duplicate updates.
swapsLock.Lock()
id := nextSubscriberID
nextSubscriberID++
subscribers[id] = queue.ChanIn()
var pendingSwaps, completedSwaps []loop.SwapInfo
for _, swap := range swaps {
if swap.State.Type() == loopdb.StateTypePending {
pendingSwaps = append(pendingSwaps, swap)
} else {
completedSwaps = append(completedSwaps, swap)
}
}
swapsLock.Unlock()
defer func() {
queue.Stop()
swapsLock.Lock()
delete(subscribers, id)
swapsLock.Unlock()
}()
// Sort completed swaps new to old.
sort.Slice(completedSwaps, func(i, j int) bool {
return completedSwaps[i].LastUpdate.After(
completedSwaps[j].LastUpdate,
)
})
// Discard all but top x latest.
if len(completedSwaps) > completedSwapsCount {
completedSwaps = completedSwaps[:completedSwapsCount]
}
// Concatenate both sets.
filteredSwaps := append(pendingSwaps, completedSwaps...)
// Sort again, but this time old to new.
sort.Slice(filteredSwaps, func(i, j int) bool {
return filteredSwaps[i].LastUpdate.Before(
filteredSwaps[j].LastUpdate,
)
})
// Return swaps to caller.
for _, swap := range filteredSwaps {
if err := send(swap); err != nil {
return err
}
}
// As long as the client is connected, keep passing through swap
// updates.
for {
select {
case queueItem, ok := <-queue.ChanOut():
if !ok {
return nil
}
swap := queueItem.(loop.SwapInfo)
if err := send(swap); err != nil {
return err
}
case <-server.Context().Done():
return nil
}
}
}
// LoopOutTerms returns the terms that the server enforces for loop out swaps.
func (s *swapClientServer) LoopOutTerms(ctx context.Context,
req *looprpc.TermsRequest) (*looprpc.TermsResponse, error) {
log.Infof("Loop out terms request received")
terms, err := s.impl.LoopOutTerms(ctx)
if err != nil {
log.Errorf("Terms request: %v", err)
return nil, err
}
return &looprpc.TermsResponse{
MinSwapAmount: int64(terms.MinSwapAmount),
MaxSwapAmount: int64(terms.MaxSwapAmount),
}, nil
}
// LoopOutQuote returns a quote for a loop out swap with the provided
// parameters.
func (s *swapClientServer) LoopOutQuote(ctx context.Context,
req *looprpc.QuoteRequest) (*looprpc.QuoteResponse, error) {
confTarget, err := validateConfTarget(
req.ConfTarget, loop.DefaultSweepConfTarget,
)
if err != nil {
return nil, err
}
quote, err := s.impl.LoopOutQuote(ctx, &loop.LoopOutQuoteRequest{
Amount: btcutil.Amount(req.Amt),
SweepConfTarget: confTarget,
})
if err != nil {
return nil, err
}
return &looprpc.QuoteResponse{
MinerFee: int64(quote.MinerFee),
PrepayAmt: int64(quote.PrepayAmount),
SwapFee: int64(quote.SwapFee),
SwapPaymentDest: quote.SwapPaymentDest[:],
CltvDelta: quote.CltvDelta,
}, nil
}
// GetTerms returns the terms that the server enforces for swaps.
func (s *swapClientServer) GetLoopInTerms(ctx context.Context, req *looprpc.TermsRequest) (
*looprpc.TermsResponse, error) {
log.Infof("Loop in terms request received")
terms, err := s.impl.LoopInTerms(ctx)
if err != nil {
log.Errorf("Terms request: %v", err)
return nil, err
}
return &looprpc.TermsResponse{
MinSwapAmount: int64(terms.MinSwapAmount),
MaxSwapAmount: int64(terms.MaxSwapAmount),
}, nil
}
// GetQuote returns a quote for a swap with the provided parameters.
func (s *swapClientServer) GetLoopInQuote(ctx context.Context,
req *looprpc.QuoteRequest) (*looprpc.QuoteResponse, error) {
log.Infof("Loop in quote request received")
quote, err := s.impl.LoopInQuote(ctx, &loop.LoopInQuoteRequest{
Amount: btcutil.Amount(req.Amt),
HtlcConfTarget: defaultConfTarget,
ExternalHtlc: req.ExternalHtlc,
})
if err != nil {
return nil, err
}
return &looprpc.QuoteResponse{
MinerFee: int64(quote.MinerFee),
SwapFee: int64(quote.SwapFee),
}, nil
}
func (s *swapClientServer) LoopIn(ctx context.Context,
in *looprpc.LoopInRequest) (
*looprpc.SwapResponse, error) {
log.Infof("Loop in request received")
req := &loop.LoopInRequest{
Amount: btcutil.Amount(in.Amt),
MaxMinerFee: btcutil.Amount(in.MaxMinerFee),
MaxSwapFee: btcutil.Amount(in.MaxSwapFee),
HtlcConfTarget: defaultConfTarget,
ExternalHtlc: in.ExternalHtlc,
}
if in.LoopInChannel != 0 {
req.LoopInChannel = &in.LoopInChannel
}
hash, htlc, err := s.impl.LoopIn(ctx, req)
if err != nil {
log.Errorf("Loop in: %v", err)
return nil, err
}
return &looprpc.SwapResponse{
Id: hash.String(),
HtlcAddress: htlc.String(),
}, nil
}
// GetLsatTokens returns all tokens that are contained in the LSAT token store.
func (s *swapClientServer) GetLsatTokens(ctx context.Context,
_ *looprpc.TokensRequest) (*looprpc.TokensResponse, error) {
log.Infof("Get LSAT tokens request received")
tokens, err := s.impl.LsatStore.AllTokens()
if err != nil {
return nil, err
}
rpcTokens := make([]*looprpc.LsatToken, len(tokens))
idx := 0
for key, token := range tokens {
macBytes, err := token.BaseMacaroon().MarshalBinary()
if err != nil {
return nil, err
}
rpcTokens[idx] = &looprpc.LsatToken{
BaseMacaroon: macBytes,
PaymentHash: token.PaymentHash[:],
PaymentPreimage: token.Preimage[:],
AmountPaidMsat: int64(token.AmountPaid),
RoutingFeePaidMsat: int64(token.RoutingFeePaid),
TimeCreated: token.TimeCreated.Unix(),
Expired: !token.IsValid(),
StorageName: key,
}
idx++
}
return &looprpc.TokensResponse{Tokens: rpcTokens}, nil
}
// validateConfTarget ensures the given confirmation target is valid. If one
// isn't specified (0 value), then the default target is used.
func validateConfTarget(target, defaultTarget int32) (int32, error) {
switch {
// Ensure the target respects our minimum threshold.
case target < minConfTarget:
return 0, fmt.Errorf("a confirmation target of at least %v "+
"must be provided", minConfTarget)
default:
return target, nil
}
}

View file

@ -1,44 +0,0 @@
package main
import (
"os"
"path/filepath"
"github.com/lightninglabs/loop"
"github.com/lightninglabs/loop/lndclient"
)
// getLnd returns an instance of the lnd services proxy.
func getLnd(network string, cfg *lndConfig) (*lndclient.GrpcLndServices, error) {
return lndclient.NewLndServices(
cfg.Host, "client", network, cfg.MacaroonDir, cfg.TLSPath,
)
}
// getClient returns an instance of the swap client.
func getClient(network, swapServer string, insecure bool, tlsPathServer string,
lnd *lndclient.LndServices) (*loop.Client, func(), error) {
storeDir, err := getStoreDir(network)
if err != nil {
return nil, nil, err
}
swapClient, cleanUp, err := loop.NewClient(
storeDir, swapServer, insecure, tlsPathServer, lnd,
)
if err != nil {
return nil, nil, err
}
return swapClient, cleanUp, nil
}
func getStoreDir(network string) (string, error) {
dir := filepath.Join(loopDirBase, network)
if err := os.MkdirAll(dir, os.ModePerm); err != nil {
return "", err
}
return dir, nil
}

View file

@ -1,137 +0,0 @@
package main
import (
"fmt"
"strconv"
"github.com/btcsuite/btcd/chaincfg"
"github.com/lightninglabs/loop"
"github.com/lightninglabs/loop/loopdb"
"github.com/lightninglabs/loop/swap"
)
// view prints all swaps currently in the database.
func view(config *config) error {
chainParams, err := swap.ChainParamsFromNetwork(config.Network)
if err != nil {
return err
}
lnd, err := getLnd(config.Network, config.Lnd)
if err != nil {
return err
}
defer lnd.Close()
swapClient, cleanup, err := getClient(
config.Network, config.SwapServer, config.Insecure,
config.TLSPathSwapSrv, &lnd.LndServices,
)
if err != nil {
return err
}
defer cleanup()
if err := viewOut(swapClient, chainParams); err != nil {
return err
}
if err := viewIn(swapClient, chainParams); err != nil {
return err
}
return nil
}
func viewOut(swapClient *loop.Client, chainParams *chaincfg.Params) error {
swaps, err := swapClient.Store.FetchLoopOutSwaps()
if err != nil {
return err
}
for _, s := range swaps {
htlc, err := swap.NewHtlc(
s.Contract.CltvExpiry,
s.Contract.SenderKey,
s.Contract.ReceiverKey,
s.Hash, swap.HtlcP2WSH, chainParams,
)
if err != nil {
return err
}
fmt.Printf("OUT %v\n", s.Hash)
fmt.Printf(" Created: %v (height %v)\n",
s.Contract.InitiationTime, s.Contract.InitiationHeight,
)
fmt.Printf(" Preimage: %v\n", s.Contract.Preimage)
fmt.Printf(" Htlc address: %v\n", htlc.Address)
unchargeChannel := "any"
if s.Contract.UnchargeChannel != nil {
unchargeChannel = strconv.FormatUint(
*s.Contract.UnchargeChannel, 10,
)
}
fmt.Printf(" Uncharge channel: %v\n", unchargeChannel)
fmt.Printf(" Dest: %v\n", s.Contract.DestAddr)
fmt.Printf(" Amt: %v, Expiry: %v\n",
s.Contract.AmountRequested, s.Contract.CltvExpiry,
)
for i, e := range s.Events {
fmt.Printf(" Update %v, Time %v, State: %v",
i, e.Time, e.State,
)
if e.State.Type() != loopdb.StateTypePending {
fmt.Printf(", Cost: server=%v, onchain=%v, "+
"offchain=%v",
e.Cost.Server,
e.Cost.Onchain,
e.Cost.Offchain,
)
}
fmt.Println()
}
fmt.Println()
}
return nil
}
func viewIn(swapClient *loop.Client, chainParams *chaincfg.Params) error {
swaps, err := swapClient.Store.FetchLoopInSwaps()
if err != nil {
return err
}
for _, s := range swaps {
htlc, err := swap.NewHtlc(
s.Contract.CltvExpiry,
s.Contract.SenderKey,
s.Contract.ReceiverKey,
s.Hash, swap.HtlcNP2WSH, chainParams,
)
if err != nil {
return err
}
fmt.Printf("IN %v\n", s.Hash)
fmt.Printf(" Created: %v (height %v)\n",
s.Contract.InitiationTime, s.Contract.InitiationHeight,
)
fmt.Printf(" Preimage: %v\n", s.Contract.Preimage)
fmt.Printf(" Htlc address: %v\n", htlc.Address)
fmt.Printf(" Amt: %v, Expiry: %v\n",
s.Contract.AmountRequested, s.Contract.CltvExpiry,
)
for i, e := range s.Events {
fmt.Printf(" Update %v, Time %v, State: %v\n",
i, e.Time, e.State,
)
}
fmt.Println()
}
return nil
}