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consistency.go
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consistency.go
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// Copyright (c) 2017-2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package gocql
import (
"fmt"
"strings"
"github.com/gocql/gocql"
)
// Definition of all Consistency levels
const (
Any Consistency = iota
One
Two
Three
Quorum
All
LocalQuorum
EachQuorum
LocalOne
)
// Definition of all SerialConsistency levels
const (
Serial SerialConsistency = iota
LocalSerial
)
func mustConvertConsistency(c Consistency) gocql.Consistency {
switch c {
case Any:
return gocql.Any
case One:
return gocql.One
case Two:
return gocql.Two
case Three:
return gocql.Three
case Quorum:
return gocql.Quorum
case All:
return gocql.All
case LocalQuorum:
return gocql.LocalQuorum
case EachQuorum:
return gocql.EachQuorum
case LocalOne:
return gocql.LocalOne
default:
panic(fmt.Sprintf("Unknown gocql Consistency level: %v", c))
}
}
func mustConvertSerialConsistency(c SerialConsistency) gocql.SerialConsistency {
switch c {
case Serial:
return gocql.Serial
case LocalSerial:
return gocql.LocalSerial
default:
panic(fmt.Sprintf("Unknown gocql SerialConsistency level: %v", c))
}
}
func (c Consistency) MarshalText() (text []byte, err error) {
return []byte(c.String()), nil
}
func (c *Consistency) UnmarshalText(text []byte) error {
switch string(text) {
case "ANY":
*c = Any
case "ONE":
*c = One
case "TWO":
*c = Two
case "THREE":
*c = Three
case "QUORUM":
*c = Quorum
case "ALL":
*c = All
case "LOCAL_QUORUM":
*c = LocalQuorum
case "EACH_QUORUM":
*c = EachQuorum
case "LOCAL_ONE":
*c = LocalOne
default:
return fmt.Errorf("invalid consistency %q", string(text))
}
return nil
}
func (c Consistency) String() string {
switch c {
case Any:
return "ANY"
case One:
return "ONE"
case Two:
return "TWO"
case Three:
return "THREE"
case Quorum:
return "QUORUM"
case All:
return "ALL"
case LocalQuorum:
return "LOCAL_QUORUM"
case EachQuorum:
return "EACH_QUORUM"
case LocalOne:
return "LOCAL_ONE"
default:
return fmt.Sprintf("invalid consistency: %d", uint16(c))
}
}
func ParseConsistency(s string) (Consistency, error) {
var c Consistency
if err := c.UnmarshalText([]byte(strings.ToUpper(s))); err != nil {
return c, fmt.Errorf("parse consistency: %w", err)
}
return c, nil
}
func ParseSerialConsistency(s string) (SerialConsistency, error) {
var sc SerialConsistency
if err := sc.UnmarshalText([]byte(strings.ToUpper(s))); err != nil {
return sc, fmt.Errorf("parse serial consistency: %w", err)
}
return sc, nil
}
func (s SerialConsistency) String() string {
switch s {
case Serial:
return "SERIAL"
case LocalSerial:
return "LOCAL_SERIAL"
default:
return fmt.Sprintf("invalid serial consistency %d", 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 serial consistency %q", string(text))
}
return nil
}