61 lines
1.1 KiB
Go
61 lines
1.1 KiB
Go
package codec
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import (
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"google.golang.org/grpc/encoding"
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"google.golang.org/protobuf/proto"
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)
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// protoCodec 用于 gateway 解析全部的 grpc 类型的消息
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type protoCodec struct{}
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func (protoCodec) Name() string {
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return "wheat-cache-proto"
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}
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func (protoCodec) Marshal(v interface{}) ([]byte, error) {
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return proto.Marshal(v.(proto.Message))
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}
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func (protoCodec) Unmarshal(data []byte, v interface{}) error {
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return proto.Unmarshal(data, v.(proto.Message))
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}
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type Frame struct {
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payload []byte
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}
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type proxyCodec struct {
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baseCodec encoding.Codec
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}
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func (p *proxyCodec) Name() string {
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return "wheat-cache-proxy"
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}
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func (p *proxyCodec) Marshal(v interface{}) ([]byte, error) {
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out, ok := v.(*Frame)
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if !ok {
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return p.Marshal(v)
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}
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return out.payload, nil
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}
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func (p *proxyCodec) Unmarshal(data []byte, v interface{}) error {
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dst, ok := v.(*Frame)
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if !ok {
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return p.Unmarshal(data, v)
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}
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dst.payload = data
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return nil
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}
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// CodeWithParent 生成基于 proto 的解码器
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func CodeWithParent(parent encoding.Codec) encoding.Codec {
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return &proxyCodec{parent}
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}
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func Codec() encoding.Codec {
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return CodeWithParent(protoCodec{})
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}
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