-
Notifications
You must be signed in to change notification settings - Fork 27
/
hook_web.go
150 lines (121 loc) · 3.57 KB
/
hook_web.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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
package hook
import (
"bytes"
"encoding/json"
"net/http"
"net/url"
"os"
"github.com/authgear/authgear-server/pkg/api/apierrors"
"github.com/authgear/authgear-server/pkg/api/event"
"github.com/authgear/authgear-server/pkg/lib/config"
"github.com/authgear/authgear-server/pkg/util/crypto"
"github.com/authgear/authgear-server/pkg/util/jwkutil"
"github.com/authgear/authgear-server/pkg/util/log"
)
type WebHookLogger struct{ *log.Logger }
func NewWebHookLogger(lf *log.Factory) WebHookLogger { return WebHookLogger{lf.New("webhook")} }
type WebHook interface {
SupportURL(u *url.URL) bool
PrepareRequest(u *url.URL, body interface{}) (*http.Request, error)
PerformWithResponse(client *http.Client, request *http.Request) (resp *http.Response, err error)
PerformNoResponse(client *http.Client, request *http.Request) error
}
type WebHookImpl struct {
Logger WebHookLogger
Secret *config.WebhookKeyMaterials
}
var _ WebHook = &WebHookImpl{}
func (h *WebHookImpl) SupportURL(u *url.URL) bool {
return u.Scheme == "http" || u.Scheme == "https"
}
func (h *WebHookImpl) PrepareRequest(u *url.URL, body interface{}) (*http.Request, error) {
jsonBody, err := json.Marshal(body)
if err != nil {
return nil, err
}
key, err := jwkutil.ExtractOctetKey(h.Secret.Set, "")
if err != nil {
return nil, err
}
signature := crypto.HMACSHA256String(key, jsonBody)
request, err := http.NewRequest("POST", u.String(), bytes.NewReader(jsonBody))
if err != nil {
return nil, err
}
request.Header.Add("Content-Type", "application/json")
request.Header.Add(HeaderRequestBodySignature, signature)
return request, nil
}
// The caller should close the response body if the response is not nil.
func (h *WebHookImpl) PerformWithResponse(
client *http.Client,
request *http.Request) (resp *http.Response, err error) {
return performRequest(client, request)
}
func (h *WebHookImpl) PerformNoResponse(
client *http.Client,
request *http.Request) error {
go func() {
resp, err := performRequest(client, request)
if err != nil {
h.Logger.WithError(err).Error("failed to dispatch nonblocking webhook")
}
if resp != nil {
defer resp.Body.Close()
}
}()
return nil
}
type EventWebHookImpl struct {
WebHookImpl
SyncHTTP SyncHTTPClient
AsyncHTTP AsyncHTTPClient
}
var _ EventWebHook = &EventWebHookImpl{}
func (h *EventWebHookImpl) DeliverBlockingEvent(u *url.URL, e *event.Event) (*event.HookResponse, error) {
request, err := h.PrepareRequest(u, e)
if err != nil {
return nil, err
}
resp, err := h.PerformWithResponse(h.SyncHTTP.Client, request)
defer func() {
if resp != nil {
resp.Body.Close()
}
}()
if err != nil {
return nil, err
}
var hookResp *event.HookResponse
hookResp, err = event.ParseHookResponse(resp.Body)
if err != nil {
apiError := apierrors.AsAPIError(err)
err = WebHookInvalidResponse.NewWithInfo("invalid response body", apiError.Info)
return nil, err
}
return hookResp, nil
}
func (h *EventWebHookImpl) DeliverNonBlockingEvent(u *url.URL, e *event.Event) error {
request, err := h.PrepareRequest(u, e)
if err != nil {
return err
}
return h.PerformNoResponse(h.AsyncHTTP.Client, request)
}
func performRequest(
client *http.Client,
request *http.Request) (resp *http.Response, err error) {
resp, err = client.Do(request)
if os.IsTimeout(err) {
err = WebHookDeliveryTimeout.New("webhook delivery timeout")
return
} else if err != nil {
return
}
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
err = WebHookInvalidResponse.NewWithInfo("invalid status code", apierrors.Details{
"status_code": resp.StatusCode,
})
}
return
}