48 lines
947 B
Go
48 lines
947 B
Go
package proto
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import (
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"bytes"
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"github.com/golang/protobuf/proto"
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"github.com/oxtoacart/bpool"
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"github.com/unistack-org/micro/v3/codec"
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)
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// create buffer pool with 16 instances each preallocated with 256 bytes
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var bufferPool = bpool.NewSizedBufferPool(16, 256)
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type Marshaler struct{}
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func (Marshaler) Marshal(v interface{}) ([]byte, error) {
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pb, ok := v.(proto.Message)
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if !ok {
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return nil, codec.ErrInvalidMessage
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}
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// looks not good, but allows to reuse underlining bytes
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buf := bufferPool.Get()
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pbuf := proto.NewBuffer(buf.Bytes())
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defer func() {
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bufferPool.Put(bytes.NewBuffer(pbuf.Bytes()))
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}()
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if err := pbuf.Marshal(pb); err != nil {
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return nil, err
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}
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return pbuf.Bytes(), nil
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}
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func (Marshaler) Unmarshal(data []byte, v interface{}) error {
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pb, ok := v.(proto.Message)
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if !ok {
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return codec.ErrInvalidMessage
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}
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return proto.Unmarshal(data, pb)
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}
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func (Marshaler) String() string {
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return "proto"
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}
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