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cli.go
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cli.go
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package cli
import (
"bufio"
"os"
"path"
"time"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/flags"
"github.com/cosmos/cosmos-sdk/client/keys"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/CoreumFoundation/coreumbridge-xrpl/relayer/logger"
"github.com/CoreumFoundation/coreumbridge-xrpl/relayer/runner"
)
const (
// DefaultHomeDir is default home for the relayer.
DefaultHomeDir = ".coreumbridge-xrpl-relayer"
// FlagHome is home flag.
FlagHome = "home"
// That key name is constant here temporary, we will take it from the relayer config later.
relayerKeyName = "coreumbridge-xrpl-relayer"
)
// InitCmd returns the init cmd.
func InitCmd() *cobra.Command {
cmd := &cobra.Command{
Use: "init",
Short: "Initializes the relayer home with the default config.",
RunE: func(cmd *cobra.Command, args []string) error {
ctx := cmd.Context()
home, err := getRelayerHome(cmd)
if err != nil {
return err
}
log, err := getConsoleLogger()
if err != nil {
return err
}
log.Info(ctx, "Generating default settings", logger.StringField("home", home))
if err = runner.InitConfig(home, runner.DefaultConfig()); err != nil {
return err
}
log.Info(ctx, "Settings are generated successfully")
return nil
},
}
addHomeFlag(cmd)
return cmd
}
// StartCmd returns the start cmd.
func StartCmd() *cobra.Command {
cmd := &cobra.Command{
Use: "start",
Short: "Start relayer.",
RunE: func(cmd *cobra.Command, args []string) error {
ctx := cmd.Context()
// scan helps to wait for any input infinitely and just then call the relayer. That handles
// the relayer restart in the container. Because after the restart the container is detached, relayer
// requests the keyring password and fail inanimately.
log, err := getConsoleLogger()
if err != nil {
return err
}
log.Info(ctx, "Press any key to start the relayer.")
input := bufio.NewScanner(os.Stdin)
input.Scan()
// that code is just for an example and will be replaced later
clientCtx, err := client.GetClientQueryContext(cmd)
if err != nil {
return errors.Wrap(err, "failed to get client context")
}
keyRecord, err := clientCtx.Keyring.Key(relayerKeyName)
if err != nil {
return errors.Wrap(err, "failed to get key from keyring")
}
address, err := keyRecord.GetAddress()
if err != nil {
return errors.Wrap(err, "failed to get address from the key record")
}
for {
select {
case <-ctx.Done():
return nil
case <-time.After(time.Second):
log.Info(ctx, "Address from the keyring extracted.", logger.StringField("address", address.String()))
}
}
},
}
addKeyringFlags(cmd)
return cmd
}
// KeyringCmd returns cosmos keyring cmd inti with the correct keys home.
func KeyringCmd() *cobra.Command {
return keys.Commands(path.Join(DefaultHomeDir, "keys"))
}
func getRelayerHome(cmd *cobra.Command) (string, error) {
home, err := cmd.Flags().GetString(FlagHome)
if err != nil {
return "", errors.WithStack(err)
}
if home == "" || home == DefaultHomeDir {
home, err = getUserHomeDir(DefaultHomeDir)
if err != nil {
return "", err
}
}
return home, nil
}
func getUserHomeDir(subPath ...string) (string, error) {
dirname, err := os.UserHomeDir()
if err != nil {
return "", errors.Wrap(err, "failed to get user home dir")
}
for _, item := range subPath {
dirname = path.Join(dirname, item)
}
return dirname, nil
}
func addHomeFlag(cmd *cobra.Command) {
cmd.PersistentFlags().String(FlagHome, DefaultHomeDir, "Relayer home directory")
}
func addKeyringFlags(cmd *cobra.Command) {
cmd.PersistentFlags().String(flags.FlagKeyringBackend, flags.DefaultKeyringBackend, "Select keyring's backend (os|file|kwallet|pass|test)")
cmd.PersistentFlags().String(flags.FlagKeyringDir, path.Join(DefaultHomeDir, "keys"), "The client Keyring directory; if omitted, the default 'home' directory will be used")
}
// returns the console logger initialised with the default logger config but with set `console` format.
func getConsoleLogger() (*logger.ZapLogger, error) {
cfg := runner.DefaultConfig().LoggingConfig
cfg.Format = "console"
zapLogger, err := logger.NewZapLogger(logger.ZapLoggerConfig(cfg))
if err != nil {
return nil, err
}
return zapLogger, nil
}