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
|
package examples_test
import (
"encoding/json"
"fmt"
"os"
"github.com/lestrrat-go/jwx/v2/jwk"
)
type Container struct {
Key jwk.Key `json:"key"`
}
// This is only one way to parse a struct field whose dynamic
// type is unknown at compile time. In this example we use
// a proxy/wrapper to trick `Container` from attempting to
// parse the `.Key` field, and intercept the value that
// would have gone into the `Container` struct into
// `Proxy` struct's `.Key` struct field
type Proxy struct {
Container
Key json.RawMessage `json:"key"`
}
func Example_jwk_struct_field() {
const src = `{
"key": {
"kty":"EC",
"crv":"P-256",
"x":"MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4",
"y":"4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM",
"use":"enc",
"kid":"1"
}
}`
var p Proxy
if err := json.Unmarshal([]byte(src), &p); err != nil {
fmt.Printf("failed to unmarshal from JSON: %s\n", err)
return
}
// Parse the intercepted `Proxy.Key` as a `jwk.Key`
// and assign it to `Container.Key`
key, err := jwk.ParseKey(p.Key)
if err != nil {
fmt.Printf("failed to parse key: %s\n", err)
return
}
p.Container.Key = key
json.NewEncoder(os.Stdout).Encode(p.Container)
// OUTPUT:
// {"key":{"crv":"P-256","kid":"1","kty":"EC","use":"enc","x":"MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4","y":"4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM"}}
}
|
