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