prysm-pulse/validator/db/restore.go
2021-01-04 16:46:22 +00:00

46 lines
1.2 KiB
Go

package db
import (
"os"
"path"
"strings"
"github.com/pkg/errors"
"github.com/prysmaticlabs/prysm/shared/cmd"
"github.com/prysmaticlabs/prysm/shared/fileutil"
"github.com/prysmaticlabs/prysm/shared/promptutil"
"github.com/prysmaticlabs/prysm/validator/db/kv"
"github.com/sirupsen/logrus"
"github.com/urfave/cli/v2"
)
const dbExistsYesNoPrompt = "A database file already exists in the target directory. " +
"Are you sure that you want to overwrite it? [y/n]"
func restore(cliCtx *cli.Context) error {
sourceFile := cliCtx.String(cmd.RestoreSourceFileFlag.Name)
targetDir := cliCtx.String(cmd.RestoreTargetDirFlag.Name)
if fileutil.FileExists(path.Join(targetDir, kv.ProtectionDbFileName)) {
resp, err := promptutil.ValidatePrompt(
os.Stdin, dbExistsYesNoPrompt, promptutil.ValidateYesOrNo,
)
if err != nil {
return errors.Wrap(err, "could not validate choice")
}
if strings.EqualFold(resp, "n") {
logrus.Info("Restore aborted")
return nil
}
}
if err := fileutil.MkdirAll(targetDir); err != nil {
return err
}
if err := fileutil.CopyFile(sourceFile, path.Join(targetDir, kv.ProtectionDbFileName)); err != nil {
return err
}
logrus.Info("Restore completed successfully")
return nil
}