func migrateTagMetadata(db *bolt.DB, data database.DataAccess) error {
migrated, err := isMigrated(db, "metadata")
if err != nil {
return err
}
if !migrated {
slog.Info("Migrating metadata to new database format")
type Metavalue struct {
Time time.Time
Value interface{}
}
metadata := make(map[metadata.Metakey]*Metavalue)
if err := decode(db, "metadata", &metadata); err == nil {
for k, v := range metadata {
err = data.Metadata().PutTagMetadata(k.TagSet(), k.Name, fmt.Sprint(v.Value), v.Time)
if err != nil {
return err
}
}
err = deleteKey(db, "metadata")
if err != nil {
return err
}
}
err = setMigrated(db, "metadata")
if err != nil {
return err
}
}
return nil
}
func migrateMetricMetadata(db *bolt.DB, data database.DataAccess) error {
migrated, err := isMigrated(db, "metadata-metric")
if err != nil {
return err
}
if !migrated {
slog.Info("Migrating metric metadata to new database format")
type MetadataMetric struct {
Unit string `json:",omitempty"`
Type string `json:",omitempty"`
Description string
}
mms := map[string]*MetadataMetric{}
if err := decode(db, "metadata-metric", &mms); err == nil {
for name, mm := range mms {
if mm.Description != "" {
err = data.Metadata().PutMetricMetadata(name, "desc", mm.Description)
if err != nil {
return err
}
}
if mm.Unit != "" {
err = data.Metadata().PutMetricMetadata(name, "unit", mm.Unit)
if err != nil {
return err
}
}
if mm.Type != "" {
err = data.Metadata().PutMetricMetadata(name, "rate", mm.Type)
if err != nil {
return err
}
}
}
err = setMigrated(db, "metadata-metric")
if err != nil {
return err
}
}
}
return nil
}