diff options
Diffstat (limited to 'pkg/database/locks.go')
-rw-r--r-- | pkg/database/locks.go | 61 |
1 files changed, 24 insertions, 37 deletions
diff --git a/pkg/database/locks.go b/pkg/database/locks.go index 6951337..e78fd0c 100644 --- a/pkg/database/locks.go +++ b/pkg/database/locks.go @@ -10,45 +10,32 @@ import ( // true if the function locked the state, otherwise returns false and the lock // parameter is updated to the value of the existing lock func (db *DB) SetLockOrGetExistingLock(path string, lock any) (bool, error) { - tx, err := db.Begin() - if err != nil { - return false, err - } - defer func() { - if err != nil { - _ = tx.Rollback() - } - }() - var lockData []byte - if err = tx.QueryRowContext(db.ctx, `SELECT lock FROM states WHERE path = ?;`, path).Scan(&lockData); err != nil { - if errors.Is(err, sql.ErrNoRows) { - if lockData, err = json.Marshal(lock); err != nil { - return false, err + ret := false + return ret, db.WithTransaction(func(tx *sql.Tx) error { + var lockData []byte + if err := tx.QueryRowContext(db.ctx, `SELECT lock FROM states WHERE path = ?;`, path).Scan(&lockData); err != nil { + if errors.Is(err, sql.ErrNoRows) { + if lockData, err = json.Marshal(lock); err != nil { + return err + } + _, err = tx.ExecContext(db.ctx, `INSERT INTO states(path, lock) VALUES (?, json(?))`, path, lockData) + ret = true + return err + } else { + return err } - _, err = tx.ExecContext(db.ctx, `INSERT INTO states(path, lock) VALUES (?, json(?))`, path, lockData) - if err != nil { - return false, err - } - err = tx.Commit() - return true, err - } else { - return false, err } - } - if lockData != nil { - _ = tx.Rollback() - err = json.Unmarshal(lockData, lock) - return false, err - } - if lockData, err = json.Marshal(lock); err != nil { - return false, err - } - _, err = tx.ExecContext(db.ctx, `UPDATE states SET lock = json(?) WHERE path = ?;`, lockData, path) - if err != nil { - return false, err - } - err = tx.Commit() - return true, err + if lockData != nil { + return json.Unmarshal(lockData, lock) + } + var err error + if lockData, err = json.Marshal(lock); err != nil { + return err + } + _, err = tx.ExecContext(db.ctx, `UPDATE states SET lock = json(?) WHERE path = ?;`, lockData, path) + ret = true + return err + }) } func (db *DB) Unlock(path, lock any) (bool, error) { |