-
Notifications
You must be signed in to change notification settings - Fork 16
/
json.go
100 lines (84 loc) · 2.66 KB
/
json.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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
package httpcodec
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"github.com/RussellLuo/kun/pkg/werror"
"github.com/RussellLuo/kun/pkg/werror/gcode"
)
type Error struct {
Code string `json:"code"`
Message string `json:"message"`
}
type FailureResponse struct {
Error Error `json:"error"`
}
type JSON struct{}
func (j JSON) DecodeRequestParam(name string, values []string, out interface{}) error {
if err := defaultBasicParam.Decode(values, out); err != nil {
if err == ErrUnsupportedType {
panic(fmt.Errorf("DecodeRequestParam not implemented for %q (of type %T)", name, out))
}
return werror.Wrap(gcode.ErrInvalidArgument, err)
}
return nil
}
func (j JSON) DecodeRequestParams(name string, values map[string][]string, out interface{}) error {
if err := defaultStructParams.Decode(values, out); err != nil {
if err == ErrUnsupportedType {
panic(fmt.Errorf("DecodeRequestParams not implemented for %q (of type %T)", name, out))
}
return werror.Wrap(gcode.ErrInvalidArgument, err)
}
return nil
}
func (j JSON) DecodeRequestBody(r *http.Request, out interface{}) error {
if err := json.NewDecoder(r.Body).Decode(out); err != nil {
return werror.Wrap(gcode.ErrInvalidArgument, err)
}
return nil
}
func (j JSON) EncodeSuccessResponse(w http.ResponseWriter, statusCode int, body interface{}) error {
w.Header().Set("Content-Type", "application/json; charset=utf-8")
w.WriteHeader(statusCode)
return json.NewEncoder(w).Encode(body)
}
func (j JSON) EncodeFailureResponse(w http.ResponseWriter, err error) error {
statusCode := gcode.HTTPStatusCode(err)
code, message := gcode.ToCodeMessage(err)
return j.EncodeSuccessResponse(w, statusCode, FailureResponse{
Error: Error{
Code: code,
Message: message,
},
})
}
func (j JSON) EncodeRequestParam(name string, value interface{}) []string {
return defaultBasicParam.Encode(value)
}
func (j JSON) EncodeRequestParams(name string, value interface{}) map[string][]string {
return defaultStructParams.Encode(value)
}
func (j JSON) EncodeRequestBody(body interface{}) (io.Reader, map[string]string, error) {
data, err := json.Marshal(body)
if err != nil {
return nil, nil, err
}
headers := map[string]string{
"Content-Type": "application/json; charset=utf-8",
}
return bytes.NewBuffer(data), headers, nil
}
func (j JSON) DecodeSuccessResponse(body io.ReadCloser, out interface{}) error {
return json.NewDecoder(body).Decode(out)
}
func (j JSON) DecodeFailureResponse(body io.ReadCloser, out *error) error {
var resp FailureResponse
if err := json.NewDecoder(body).Decode(&resp); err != nil {
return err
}
*out = gcode.FromCodeMessage(resp.Error.Code, resp.Error.Message)
return nil
}