Change id type from uint32 to int64 in LockPostgreSQL (#74)

limiters_test.go

@@ -145,13 +145,13 @@ func (s *LimitersTestSuite) lockers(generateKeys bool) map[string]l.DistLocker {
 	return lockers
 }
 
-func hash(s string) uint32 {
+func hash(s string) int64 {
 	h := fnv.New32a()
 	_, err := h.Write([]byte(s))
 	if err != nil {
 		panic(err)
 	}
-	return h.Sum32()
+	return int64(h.Sum32())
 }
 
 // distLockers returns distributed lockers only.

locks.go

@@ -193,12 +193,12 @@ func (l *LockMemcached) Unlock(ctx context.Context) error {
 // LockPostgreSQL is an implementation of the DistLocker interface using PostgreSQL's advisory lock.
 type LockPostgreSQL struct {
 	db *sql.DB
-	id uint32
+	id int64
 	tx *sql.Tx
 }
 
 // NewLockPostgreSQL creates a new LockPostgreSQL.
-func NewLockPostgreSQL(db *sql.DB, id uint32) *LockPostgreSQL {
+func NewLockPostgreSQL(db *sql.DB, id int64) *LockPostgreSQL {
 	return &LockPostgreSQL{db, id, nil}
 }