/
version0Thriftrw.go
77 lines (66 loc) · 2.31 KB
/
version0Thriftrw.go
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package codec
import (
"bytes"
"go.uber.org/thriftrw/protocol/binary"
)
type (
// ThriftRWEncoder is an implementation using thrift rw for binary encoding / decoding
// NOTE: this encoder only works for thrift struct
ThriftRWEncoder struct {
}
)
var _ BinaryEncoder = (*ThriftRWEncoder)(nil)
// NewThriftRWEncoder generate a new ThriftRWEncoder
func NewThriftRWEncoder() *ThriftRWEncoder {
return &ThriftRWEncoder{}
}
// Encode encode the object
func (t *ThriftRWEncoder) Encode(obj ThriftObject) ([]byte, error) {
if obj == nil {
return nil, MsgPayloadNotThriftEncoded
}
var writer bytes.Buffer
// use the first byte to version the serialization
err := writer.WriteByte(preambleVersion0)
if err != nil {
return nil, err
}
sw := binary.Default.Writer(&writer)
defer sw.Close()
if err := obj.Encode(sw); err != nil {
return nil, err
}
return writer.Bytes(), nil
}
// Decode decode the object
func (t *ThriftRWEncoder) Decode(b []byte, val ThriftObject) error {
if len(b) < 1 {
return MissingBinaryEncodingVersion
}
version := b[0]
if version != preambleVersion0 {
return InvalidBinaryEncodingVersion
}
reader := bytes.NewReader(b[1:])
sr := binary.Default.Reader(reader)
return val.Decode(sr)
}