Split the select+update query for txn_id counter
The update part wasn't executed actually for SQLite, so it is moved to
a separate statement.
Fixes
@@ -32,14 +32,18 @@ INSERT OR IGNORE INTO appservice_counters (name, last_id) VALUES('txn_id', 1);
`
const selectTxnIDSQL = `
- SELECT last_id FROM appservice_counters WHERE name='txn_id';
- UPDATE appservice_counters SET last_id=last_id+1 WHERE name='txn_id';
+ SELECT last_id FROM appservice_counters WHERE name='txn_id'
+`
+
+const updateTxnIDSQL = `
+ UPDATE appservice_counters SET last_id=last_id+1 WHERE name='txn_id'
`
type txnStatements struct {
db *sql.DB
writer sqlutil.Writer
selectTxnIDStmt *sql.Stmt
+ updateTxnIDStmt *sql.Stmt
}
func (s *txnStatements) prepare(db *sql.DB, writer sqlutil.Writer) (err error) {
@@ -54,6 +58,10 @@ func (s *txnStatements) prepare(db *sql.DB, writer sqlutil.Writer) (err error) {
return
}
+ if s.updateTxnIDStmt, err = db.Prepare(updateTxnIDSQL); err != nil {
+ return
+ }
+
return
}
@@ -63,6 +71,11 @@ func (s *txnStatements) selectTxnID(
) (txnID int, err error) {
err = s.writer.Do(s.db, nil, func(txn *sql.Tx) error {
err := s.selectTxnIDStmt.QueryRowContext(ctx).Scan(&txnID)
+ if err != nil {
+ return err
+ }
+
+ _, err = s.updateTxnIDStmt.ExecContext(ctx)
return err
})
return
