close the db before backup for windows shares and better error handling (#10810)

api/datastore/backup.go

@@ -1,9 +1,11 @@
 package datastore
 
 import (
+	"fmt"
 	"os"
 	"path"
 
+	portainer "github.com/portainer/portainer/api"
 	"github.com/rs/zerolog/log"
 )
 
@@ -14,10 +16,22 @@ func (store *Store) Backup() (string, error) {
 
 	backupFilename := store.backupFilename()
 	log.Info().Str("from", store.connection.GetDatabaseFilePath()).Str("to", backupFilename).Msgf("Backing up database")
-	err := store.fileService.Copy(store.connection.GetDatabaseFilePath(), backupFilename, true)
+
+	// Close the store before backing up
+	err := store.Close()
 	if err != nil {
-		log.Warn().Err(err).Msg("failed to create backup file")
-		return "", err
+		return "", fmt.Errorf("failed to close store before backup: %w", err)
+	}
+
+	err = store.fileService.Copy(store.connection.GetDatabaseFilePath(), backupFilename, true)
+	if err != nil {
+		return "", fmt.Errorf("failed to create backup file: %w", err)
+	}
+
+	// reopen the store
+	_, err = store.Open()
+	if err != nil {
+		return "", fmt.Errorf("failed to reopen store after backup: %w", err)
 	}
 
 	return backupFilename, nil
@@ -29,31 +43,25 @@ func (store *Store) Restore() error {
 }
 
 func (store *Store) RestoreFromFile(backupFilename string) error {
-	if exists, _ := store.fileService.FileExists(backupFilename); !exists {
-		log.Error().Str("backupFilename", backupFilename).Msg("backup file does not exist")
-		return os.ErrNotExist
-	}
-
 	if err := store.fileService.Copy(backupFilename, store.connection.GetDatabaseFilePath(), true); err != nil {
-		log.Error().Err(err).Msg("error while restoring backup.")
-		return err
+		return fmt.Errorf("unable to restore backup file %q. err: %w", backupFilename, err)
 	}
 
 	log.Info().Str("from", store.connection.GetDatabaseFilePath()).Str("to", backupFilename).Msgf("database restored")
 
-	// determine the db version
-	store.Open()
-	version, err := store.VersionService.Version()
-
-	edition := "CE"
-	if version.Edition == 2 {
-		edition = "EE"
+	_, err := store.Open()
+	if err != nil {
+		return fmt.Errorf("unable to determine version of restored portainer backup file: %w", err)
 	}
 
-	if err == nil {
-		log.Info().Str("version", version.SchemaVersion).Msgf("Restored database version: Portainer %s %s", edition, version.SchemaVersion)
+	// determine the db version
+	version, err := store.VersionService.Version()
+	if err != nil {
+		return fmt.Errorf("unable to determine restored database version. err: %w", err)
 	}
 
+	editionLabel := portainer.SoftwareEdition(version.Edition).GetEditionLabel()
+	log.Info().Str("version", version.SchemaVersion).Msgf("Restored database version: Portainer %s %s ", editionLabel, version.SchemaVersion)
 	return nil
 }
 
@@ -61,8 +69,7 @@ func (store *Store) createBackupPath() error {
 	backupDir := path.Join(store.connection.GetStorePath(), "backups")
 	if exists, _ := store.fileService.FileExists(backupDir); !exists {
 		if err := os.MkdirAll(backupDir, 0700); err != nil {
-			log.Error().Err(err).Msg("error while creating backup folder")
-			return err
+			return fmt.Errorf("unable to create backup folder: %w", err)
 		}
 	}
 	return nil