forked from formancehq/numary-sdk-go
-
Notifications
You must be signed in to change notification settings - Fork 0
/
cloud.go
82 lines (73 loc) · 1.98 KB
/
cloud.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
package ledgerclient
import (
"bytes"
"encoding/json"
"fmt"
"github.com/pkg/errors"
"net/http"
)
const (
AuthEndpoint = "https://api.numary.cloud/auth/authenticate/tokens"
)
type cloudRoundTripper struct {
client *http.Client
rt http.RoundTripper
url string
token string
resolvedToken string
}
func (c *cloudRoundTripper) RoundTrip(request *http.Request) (*http.Response, error) {
if c.resolvedToken != "" {
return c.rt.RoundTrip(request)
}
rsp, err := c.client.Post(c.url, "application/json", bytes.NewBufferString(fmt.Sprintf(`{"strategy": "m2m", "token": "%s"}`, c.token)))
if err != nil {
return nil, errors.Wrap(err, "getting token")
}
type Token struct {
Data struct {
JWT string `json:"jwt"`
} `json:"data"`
}
tok := &Token{}
err = json.NewDecoder(rsp.Body).Decode(tok)
if err != nil {
return nil, errors.Wrap(err, "decoding auth server response")
}
if request.Header == nil {
request.Header = http.Header{}
}
request.Header.Set("Authorization", "Bearer "+tok.Data.JWT)
return c.rt.RoundTrip(request)
}
var _ http.RoundTripper = &cloudRoundTripper{}
func WithCloudClient(client *http.Client, cloudUrl, token string) *http.Client {
newClient := *client
if newClient.Transport == nil {
newClient.Transport = http.DefaultTransport
}
newClient.Transport = &cloudRoundTripper{
client: client,
rt: newClient.Transport,
url: cloudUrl,
token: token,
}
return &newClient
}
func FetchToken(client *http.Client, cloudUrl, token string) (string, error) {
rsp, err := client.Post(cloudUrl, "application/json", bytes.NewBufferString(fmt.Sprintf(`{"strategy": "m2m", "token": "%s"}`, token)))
if err != nil {
return "", errors.Wrap(err, "getting token")
}
type Token struct {
Data struct {
JWT string `json:"jwt"`
} `json:"data"`
}
tok := &Token{}
err = json.NewDecoder(rsp.Body).Decode(tok)
if err != nil {
return "nil", errors.Wrap(err, "decoding auth server response")
}
return tok.Data.JWT, nil
}