Keep existing db when converting geocache

internal/geo/location/convert.go

@@ -11,8 +11,11 @@ import (
 	"github.com/samonzeweb/godb/adapters/sqlite"
 )
 
-//nolint:funlen,cyclop
+// ConvertCache converts files-based cache into the DB-based cache.
-func (c *Cache) ConvertCache() error {
+// If reset is true, the DB cache is created from scratch.
+//
+//nolint:funlen,cyclop,gocognit
+func (c *Cache) ConvertCache(reset bool) error {
 	var (
 		dbfile     = c.config.Geo.LocationCacheDB
 		tableName  = "Location"
@@ -20,20 +23,24 @@ func (c *Cache) ConvertCache() error {
 		known      = map[string]bool{}
 	)
 
+	if reset {
 		err := removeDBIfExists(dbfile)
 		if err != nil {
 			return err
 		}
+	}
 
 	db, err := godb.Open(sqlite.Adapter, dbfile)
 	if err != nil {
 		return err
 	}
 
+	if reset {
 		err = createTable(db, tableName)
 		if err != nil {
 			return err
 		}
+	}
 
 	log.Println("listing cache entries...")
 	files, err := filepath.Glob(filepath.Join(cacheFiles, "*"))

srv.go

@@ -237,7 +237,7 @@ func convertGeoLocationCache(conf *config.Config) error {
 		return err
 	}
 
-	return geoLocCache.ConvertCache()
+	return geoLocCache.ConvertCache(false)
 }
 
 func setLogLevel(logLevel string) error {