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serializer.go
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serializer.go
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package message
import (
"sync"
"github.com/aura-studio/nano/cluster/clusterpb"
"github.com/aura-studio/nano/env"
"github.com/aura-studio/nano/serialize"
"github.com/aura-studio/nano/serialize/json"
"github.com/aura-studio/nano/serialize/protobuf"
"github.com/aura-studio/nano/serialize/rawstring"
)
const (
Unknown uint32 = iota
JSON
Protobuf
RawString
)
var (
jsonSerializer = json.NewSerializer()
protobufSerializer = protobuf.NewSerializer()
rawStringSerializer = rawstring.NewSerializer()
)
var (
// Serializers is a map from route to serializer
Serializers = make(map[string]serialize.Serializer)
rw sync.RWMutex
)
func GetSerializerType(s serialize.Serializer) uint32 {
switch s.(type) {
case *json.Serializer:
return JSON
case *protobuf.Serializer:
return Protobuf
case *rawstring.Serializer:
return RawString
default:
return Unknown
}
}
func GetSerializer(typ uint32) serialize.Serializer {
switch typ {
case JSON:
return jsonSerializer
case Protobuf:
return protobufSerializer
case RawString:
return rawStringSerializer
default:
return env.Serializer
}
}
// DuplicateSerializers returns serializers for compressed route.
func DuplicateSerializers() map[string]serialize.Serializer {
rw.RLock()
defer rw.RUnlock()
return Serializers
}
// WriteSerializerItem is to set serializer item when server registers.
func WriteSerializerItem(route string, typ uint32) map[string]serialize.Serializer {
rw.Lock()
defer rw.Unlock()
Serializers[route] = GetSerializer(typ)
return Serializers
}
// WriteSerializers is to set serializers when new serializer dictionary is found.
func WriteSerializers(items []*clusterpb.DictionaryItem) map[string]serialize.Serializer {
rw.Lock()
defer rw.Unlock()
for _, item := range items {
Serializers[item.Route] = GetSerializer(item.Serializer)
}
return Serializers
}
func Serialize(v interface{}) ([]byte, error) {
if data, ok := v.([]byte); ok {
return data, nil
}
data, err := env.Serializer.Marshal(v)
if err != nil {
return nil, err
}
return data, nil
}
func RouteSerialize(serializers map[string]serialize.Serializer, route string, v interface{}) ([]byte, error) {
if data, ok := v.([]byte); ok {
return data, nil
}
serializer, ok := serializers[route]
if !ok {
serializer = env.Serializer
}
data, err := serializer.Marshal(v)
if err != nil {
return nil, err
}
return data, nil
}