Initial QSfera import

Server/vendor/go-micro.dev/v4/codec/proto/marshaler.go

@@ -0,0 +1,47 @@
+package proto
+
+import (
+	"bytes"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/oxtoacart/bpool"
+	"go-micro.dev/v4/codec"
+)
+
+// create buffer pool with 16 instances each preallocated with 256 bytes.
+var bufferPool = bpool.NewSizedBufferPool(16, 256)
+
+type Marshaler struct{}
+
+func (Marshaler) Marshal(v interface{}) ([]byte, error) {
+	pb, ok := v.(proto.Message)
+	if !ok {
+		return nil, codec.ErrInvalidMessage
+	}
+
+	// looks not good, but allows to reuse underlining bytes
+	buf := bufferPool.Get()
+	pbuf := proto.NewBuffer(buf.Bytes())
+	defer func() {
+		bufferPool.Put(bytes.NewBuffer(pbuf.Bytes()))
+	}()
+
+	if err := pbuf.Marshal(pb); err != nil {
+		return nil, err
+	}
+
+	return pbuf.Bytes(), nil
+}
+
+func (Marshaler) Unmarshal(data []byte, v interface{}) error {
+	pb, ok := v.(proto.Message)
+	if !ok {
+		return codec.ErrInvalidMessage
+	}
+
+	return proto.Unmarshal(data, pb)
+}
+
+func (Marshaler) String() string {
+	return "proto"
+}