consistency serial was added

Author: OleksiienkoMykyta

frame.go

@@ -192,6 +192,8 @@ const (
 
 type Consistency uint16
 
+type SerialConsistency = Consistency
+
 const (
 	Any         Consistency = 0x00
 	One         Consistency = 0x01
@@ -202,6 +204,8 @@ const (
 	LocalQuorum Consistency = 0x06
 	EachQuorum  Consistency = 0x07
 	LocalOne    Consistency = 0x0A
+	Serial      Consistency = 0x08
+	LocalSerial Consistency = 0x09
 )
 
 func (c Consistency) String() string {
@@ -224,6 +228,10 @@ func (c Consistency) String() string {
 		return "EACH_QUORUM"
 	case LocalOne:
 		return "LOCAL_ONE"
+	case Serial:
+		return "SERIAL"
+	case LocalSerial:
+		return "LOCAL_SERIAL"
 	default:
 		return fmt.Sprintf("UNKNOWN_CONS_0x%x", uint16(c))
 	}
@@ -253,13 +261,21 @@ func (c *Consistency) UnmarshalText(text []byte) error {
 		*c = EachQuorum
 	case "LOCAL_ONE":
 		*c = LocalOne
+	case "SERIAL":
+		*c = Serial
+	case "LOCAL_SERIAL":
+		*c = LocalSerial
 	default:
 		return fmt.Errorf("invalid consistency %q", string(text))
 	}
 
 	return nil
 }
 
+func (c Consistency) IsSerial() bool {
+	return c == Serial || c == LocalSerial
+
+}
 func ParseConsistency(s string) Consistency {
 	var c Consistency
 	if err := c.UnmarshalText([]byte(strings.ToUpper(s))); err != nil {
@@ -286,41 +302,6 @@ func MustParseConsistency(s string) (Consistency, error) {
 	return c, nil
 }
 
-type SerialConsistency uint16
-
-const (
-	Serial      SerialConsistency = 0x08
-	LocalSerial SerialConsistency = 0x09
-)
-
-func (s SerialConsistency) String() string {
-	switch s {
-	case Serial:
-		return "SERIAL"
-	case LocalSerial:
-		return "LOCAL_SERIAL"
-	default:
-		return fmt.Sprintf("UNKNOWN_SERIAL_CONS_0x%x", uint16(s))
-	}
-}
-
-func (s SerialConsistency) MarshalText() (text []byte, err error) {
-	return []byte(s.String()), nil
-}
-
-func (s *SerialConsistency) UnmarshalText(text []byte) error {
-	switch string(text) {
-	case "SERIAL":
-		*s = Serial
-	case "LOCAL_SERIAL":
-		*s = LocalSerial
-	default:
-		return fmt.Errorf("invalid consistency %q", string(text))
-	}
-
-	return nil
-}
-
 const (
 	apacheCassandraTypePrefix = "org.apache.cassandra.db.marshal."
 )

session.go

@@ -144,6 +144,10 @@ func NewSession(cfg ClusterConfig) (*Session, error) {
 		return nil, errors.New("Can't use both Authenticator and AuthProvider in cluster config.")
 	}
 
+	if cfg.Consistency.IsSerial() {
+		return nil, fmt.Errorf("the default consistency level is not allowed to be SERIAL or LOCAL_SERIAL. Recived value: %v", cfg.Consistency)
+	}
+
 	// TODO: we should take a context in here at some point
 	ctx, cancel := context.WithCancel(context.TODO())
 
@@ -1265,6 +1269,9 @@ func (q *Query) Bind(v ...interface{}) *Query {
 // SERIAL. This option will be ignored for anything else that a
 // conditional update/insert.
 func (q *Query) SerialConsistency(cons SerialConsistency) *Query {
+	if !cons.IsSerial() {
+		panic("Serial consistency can only be SERIAL or LOCAL_SERIAL got " + cons.String())
+	}
 	q.serialCons = cons
 	return q
 }
@@ -1915,6 +1922,9 @@ func (b *Batch) Size() int {
 //
 // Only available for protocol 3 and above
 func (b *Batch) SerialConsistency(cons SerialConsistency) *Batch {
+	if !cons.IsSerial() {
+		panic("Serial consistency can only be SERIAL or LOCAL_SERIAL got " + cons.String())
+	}
 	b.serialCons = cons
 	return b
 }