forked from palantir/conjure-go-runtime
-
Notifications
You must be signed in to change notification settings - Fork 0
/
binary.go
81 lines (69 loc) · 2.17 KB
/
binary.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
// Copyright (c) 2019 Palantir Technologies. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package codecs
import (
"bytes"
"io"
werror "github.com/palantir/witchcraft-go-error"
)
const (
contentTypeBinary = "application/octet-stream"
)
// Binary codec encodes and decodes binary requests and responses.
// Decode/Unmarshal accepts an io.Writer and copies content to the writer.
// Encode/Marshal accepts an io.Reader and copies content from the reader.
var Binary Codec = codecBinary{}
type codecBinary struct{}
func (codecBinary) Accept() string {
return contentTypeBinary
}
func (codecBinary) Decode(r io.Reader, v interface{}) error {
w, ok := v.(io.Writer)
if !ok {
return werror.Error("failed to decode binary data into type which does not implement io.Writer")
}
if closer, ok := r.(io.ReadCloser); ok {
defer func() { _ = closer.Close() }()
}
if _, err := io.Copy(w, r); err != nil {
return werror.Convert(err)
}
return nil
}
func (c codecBinary) Unmarshal(data []byte, v interface{}) error {
return c.Decode(bytes.NewReader(data), v)
}
func (codecBinary) ContentType() string {
return contentTypeBinary
}
func (codecBinary) Encode(w io.Writer, v interface{}) error {
r, ok := v.(io.Reader)
if !ok {
return werror.Error("failed to encode binary data from type which does not implement io.Reader")
}
if closer, ok := r.(io.ReadCloser); ok {
defer func() { _ = closer.Close() }()
}
if _, err := io.Copy(w, r); err != nil {
return werror.Convert(err)
}
return nil
}
func (c codecBinary) Marshal(v interface{}) ([]byte, error) {
var buf bytes.Buffer
if err := c.Encode(&buf, v); err != nil {
return nil, err
}
return buf.Bytes(), nil
}