// updateSchemaVersion increments the schema version by 1 and sets SchemaDiff.
func updateSchemaVersion(t *meta.Meta, job *model.Job) (int64, error) {
schemaVersion, err := t.GenSchemaVersion()
if err != nil {
return 0, errors.Trace(err)
}
diff := &model.SchemaDiff{
Version: schemaVersion,
Type: job.Type,
SchemaID: job.SchemaID,
}
if job.Type == model.ActionTruncateTable {
// Truncate table has two table ID, should be handled differently.
err = job.DecodeArgs(&diff.TableID)
if err != nil {
return 0, errors.Trace(err)
}
diff.OldTableID = job.TableID
} else {
diff.TableID = job.TableID
}
err = t.SetSchemaDiff(schemaVersion, diff)
return schemaVersion, errors.Trace(err)
}