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types.go
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types.go
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package schema
import (
"encoding/json"
"fmt"
"strings"
)
type Status byte
const (
Undefined Status = iota
Null
Present
)
type InfinityModifier int8
type ValueType int
type deprecatedTypes []ValueType
const (
Infinity InfinityModifier = 1
None InfinityModifier = 0
NegativeInfinity InfinityModifier = -Infinity
)
var deprecatedTypesValues = deprecatedTypes{
TypeTimeIntervalDeprecated,
}
func (v deprecatedTypes) isDeprecated(t ValueType) bool {
for _, dt := range v {
if dt == t {
return true
}
}
return false
}
const (
TypeInvalid ValueType = iota
TypeBool
TypeInt
TypeFloat
TypeUUID
TypeString
TypeByteArray
TypeStringArray
TypeIntArray
TypeTimestamp
TypeJSON
TypeUUIDArray
TypeInet
TypeInetArray
TypeCIDR
TypeCIDRArray
TypeMacAddr
TypeMacAddrArray
TypeTimeIntervalDeprecated
TypeEnd
)
func (r *ValueType) UnmarshalJSON(data []byte) (err error) {
var valueType int
if err := json.Unmarshal(data, &valueType); err != nil {
return err
}
if ValueType(valueType) <= TypeInvalid || ValueType(valueType) >= TypeEnd {
*r = TypeInvalid
} else {
*r = ValueType(valueType)
}
return nil
}
// This is needed only for backward compatibility.
// can be removed in sdk v2
func valueTypeFromOverTheWireString(s string) ValueType {
switch s {
case "Bool":
return TypeBool
case "Int8":
return TypeInt
case "Float8":
return TypeFloat
case "UUID":
return TypeUUID
case "Text":
return TypeString
case "JSON":
return TypeJSON
case "Int8Array":
return TypeIntArray
case "TextArray":
return TypeStringArray
case "Timestamptz":
return TypeTimestamp
case "Bytea":
return TypeByteArray
case "UUIDArray":
return TypeUUIDArray
case "InetArray":
return TypeInetArray
case "Inet":
return TypeInet
case "MacaddrArray":
return TypeMacAddrArray
case "Macaddr":
return TypeMacAddr
case "CIDRArray":
return TypeCIDRArray
case "CIDR":
return TypeCIDR
default:
return TypeInvalid
}
}
// this is for backward compatibility
// can be removed in sdk v2
func (r ValueType) overTheWireString() string {
switch r {
case TypeBool:
return "Bool"
case TypeInt:
return "Int8"
case TypeFloat:
return "Float8"
case TypeUUID:
return "UUID"
case TypeString:
return "Text"
case TypeJSON:
return "JSON"
case TypeIntArray:
return "Int8Array"
case TypeStringArray:
return "TextArray"
case TypeTimestamp:
return "Timestamptz"
case TypeByteArray:
return "Bytea"
case TypeUUIDArray:
return "UUIDArray"
case TypeInetArray:
return "InetArray"
case TypeInet:
return "Inet"
case TypeMacAddrArray:
return "MacaddrArray"
case TypeMacAddr:
return "Macaddr"
case TypeCIDRArray:
return "CIDRArray"
case TypeCIDR:
return "CIDR"
case TypeInvalid:
return "TypeInvalid"
default:
return fmt.Sprintf("Unknown(%d)", r)
}
}
func (r ValueType) String() string {
switch r {
case TypeBool:
return "TypeBool"
case TypeInt:
return "TypeInt"
case TypeFloat:
return "TypeFloat"
case TypeUUID:
return "TypeUUID"
case TypeString:
return "TypeString"
case TypeJSON:
return "TypeJSON"
case TypeIntArray:
return "TypeIntArray"
case TypeStringArray:
return "TypeStringArray"
case TypeTimestamp:
return "TypeTimestamp"
case TypeByteArray:
return "TypeByteArray"
case TypeUUIDArray:
return "TypeUUIDArray"
case TypeInetArray:
return "TypeInetArray"
case TypeInet:
return "TypeInet"
case TypeMacAddrArray:
return "TypeMacAddrArray"
case TypeMacAddr:
return "TypeMacAddr"
case TypeCIDRArray:
return "TypeCIDRArray"
case TypeCIDR:
return "TypeCIDR"
case TypeInvalid:
return "TypeInvalid"
default:
return fmt.Sprintf("Unknown(%d)", r)
}
}
type CQType interface {
Set(v any) error
Get() any
String() string
Equal(CQType) bool
Type() ValueType
Size() int
GetStatus() Status
}
type CQTypes []CQType
// Size returns total number of bytes occupied by all values
// this useful to understand how much data is being transferred, rather than just number
// of resources.
func (c CQTypes) Size() int {
var size int
for _, v := range c {
size += v.Size()
}
return size
}
func (c CQTypes) MarshalJSON() ([]byte, error) {
res := make([]map[string]any, len(c))
for i, v := range c {
res[i] = map[string]any{
"type": v.Type().overTheWireString(),
"value": v,
}
}
return json.Marshal(res)
}
func (c *CQTypes) UnmarshalJSON(b []byte) error {
var res []map[string]json.RawMessage
if err := json.Unmarshal(b, &res); err != nil {
return err
}
cqTypes := make(CQTypes, 0, len(res))
for i := range res {
var s string
if err := json.Unmarshal(res[i]["type"], &s); err != nil {
return fmt.Errorf("failed to unmarshal CQType type: %w", err)
}
t := valueTypeFromOverTheWireString(s)
if t <= TypeInvalid || t >= TypeEnd {
// this means we dont support it yet on the destination side so we skip this CQType
continue
}
v := NewCqTypeFromValueType(t)
if err := json.Unmarshal(res[i]["value"], v); err != nil {
return fmt.Errorf("failed to unmarshal CQType value: %w", err)
}
cqTypes = append(cqTypes, v)
}
*c = cqTypes
return nil
}
func (c CQTypes) Len() int {
return len(c)
}
func (c CQTypes) Diff(other CQTypes) string {
var diff strings.Builder
if other == nil {
return "other is nil"
}
if len(c) != len(other) {
return fmt.Sprintf("length mismatch: %d != %d", len(c), len(other))
}
for i := range c {
if c[i] == nil && other[i] == nil {
continue
}
if c[i] == nil && other[i] != nil {
diff.WriteString(fmt.Sprintf("value at %d is nil while other is %v\n", i, other[i]))
}
if c[i] != nil && other[i] == nil {
diff.WriteString(fmt.Sprintf("value at %d is nil while src is %v\n", i, other[i]))
}
if !c[i].Equal(other[i]) {
c[i].Type()
diff.WriteString(fmt.Sprintf("value at %d is(%s) %v while other is(%s) %v\n", i, c[i], c[i].Type(), other[i], other[i].Type()))
}
}
return diff.String()
}
func (c CQTypes) Equal(other CQTypes) bool {
if other == nil {
return false
}
if len(c) != len(other) {
return false
}
for i := range c {
if c[i] == nil && other[i] == nil {
continue
}
if c[i] == nil || other[i] == nil {
return false
}
if !c[i].Equal(other[i]) {
return false
}
}
return true
}
func (c CQTypes) String() string {
var sb strings.Builder
sb.WriteString("[")
for i, v := range c {
if i > 0 {
sb.WriteString(", ")
}
if v == nil {
sb.WriteString("nil")
} else {
sb.WriteString(v.String())
}
}
sb.WriteString("]")
return sb.String()
}
func NewCqTypeFromValueType(typ ValueType) CQType {
switch typ {
case TypeBool:
return &Bool{}
case TypeByteArray:
return &Bytea{}
case TypeCIDRArray:
return &CIDRArray{}
case TypeCIDR:
return &CIDR{}
case TypeFloat:
return &Float8{}
case TypeInetArray:
return &InetArray{}
case TypeInet:
return &Inet{}
case TypeIntArray:
return &Int8Array{}
case TypeInt:
return &Int8{}
case TypeJSON:
return &JSON{}
case TypeMacAddrArray:
return &MacaddrArray{}
case TypeMacAddr:
return &Macaddr{}
case TypeStringArray:
return &TextArray{}
case TypeString:
return &Text{}
case TypeTimestamp:
return &Timestamptz{}
case TypeUUIDArray:
return &UUIDArray{}
case TypeUUID:
return &UUID{}
default:
panic("unknown type " + typ.String())
}
}