-
Notifications
You must be signed in to change notification settings - Fork 8
/
invoke.go
208 lines (174 loc) · 5.22 KB
/
invoke.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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
/*
Copyright 2021 The tKeel Authors.
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 kubernetes
import (
"bytes"
"context"
"fmt"
"io/ioutil"
"net/http"
"os"
"os/signal"
"github.com/dapr/cli/pkg/api"
"github.com/gorilla/websocket"
"github.com/pkg/errors"
"k8s.io/client-go/rest"
)
// Invoke is a command to invoke a remote or local dapr instance.
func Invoke(pluginID, method string, data []byte, verb string, reqOpts ...RestRequestOption) (string, error) {
client, err := Client()
if err != nil {
return "", err
}
app, err := GetAppPod(client, pluginID)
if err != nil {
return "", err
}
return invoke(client.CoreV1().RESTClient(), &app.AppInfo, method, data, verb, reqOpts...)
}
func invoke(client rest.Interface, app *AppInfo, method string, data []byte, verb string, reqOpts ...RestRequestOption) (string, error) {
req, err := app.Request(client.Verb(verb), method, data)
if err != nil {
return "", fmt.Errorf("error get request: %w", err)
}
for i := 0; i < len(reqOpts); i++ {
if err = reqOpts[i](req); err != nil {
return "", err
}
}
result := req.Do(context.TODO())
rawbody, err := result.Raw()
if err != nil {
return "", fmt.Errorf("error get raw: %w", err)
}
if len(rawbody) > 0 {
return string(rawbody), nil
}
return "", nil
}
// InvokeByPortForward is a command to invoke a remote or local dapr instance.
func InvokeByPortForward(pluginID, method string, data []byte, verb string, reqOpts ...HTTPRequestOption) (string, error) {
portForward, err := GetPortforward(pluginID, WithHTTPPort, WithAppPod)
if err != nil {
return "", err
}
// initialize port forwarding.
if err = portForward.Init(); err == nil {
url := makeEndpoint(portForward.App, portForward, method)
// initialize port forwarding.
// fmt.Println(verb, url)
var req *http.Request
req, err = http.NewRequest(verb, url, bytes.NewBuffer(data))
if err != nil {
return "", fmt.Errorf("error creat http request: %w", err)
}
req.Header.Set("Content-Type", "application/json")
for i := 0; i < len(reqOpts); i++ {
if err = reqOpts[i](req); err != nil {
return "", err
}
}
var httpc http.Client
var r *http.Response
r, err = httpc.Do(req)
if err != nil {
return "", fmt.Errorf("error do http request: %w", err)
}
defer r.Body.Close()
return readResponse(r)
}
portForward.Stop()
return "", err
}
func makeEndpoint(app *AppPod, pf *PortForward, method string) string {
return fmt.Sprintf("http://127.0.0.1:%s/v%s/invoke/%s/method/%s", fmt.Sprintf("%v", pf.LocalPort), api.RuntimeAPIVersion, app.AppID, method)
}
// not use dapr api.
func makeWsEndpoint(pf *PortForward, method string) string {
return fmt.Sprintf("ws://127.0.0.1:%s/%s", fmt.Sprintf("%v", pf.LocalPort), method)
}
func readResponse(response *http.Response) (string, error) {
rb, err := ioutil.ReadAll(response.Body)
if err != nil {
return "", fmt.Errorf("error read http response: %w", err)
}
if len(rb) > 0 {
return string(rb), nil
}
return "", nil
}
// WebsocketByPortForward websocket request to the k8s pod.
func WebsocketByPortForward(pluginID, method string, data []byte) (string, error) {
portForward, err := GetPortforward(pluginID, WithAppPort)
if err != nil {
return "", err
}
// manage termination of port forwarding connection on interrupt
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt)
defer signal.Stop(signals)
go func() {
<-signals
os.Exit(0)
}()
// initialize port forwarding
if err = portForward.Init(); err == nil {
defer portForward.Stop()
url := makeWsEndpoint(portForward, method)
fmt.Println(url)
dialer := websocket.Dialer{}
connect, resp, err := dialer.Dial(url, nil)
if nil != err {
fmt.Println(err)
return "", errors.Wrap(err, "connect error")
}
defer resp.Body.Close()
defer connect.Close()
err = connect.WriteMessage(websocket.TextMessage, data)
if nil != err {
fmt.Println(err)
return "", errors.Wrap(err, "websocket write error")
}
for {
messageType, messageData, err := connect.ReadMessage()
if nil != err {
return "", errors.Wrap(err, "websocket read error")
}
switch messageType {
case websocket.TextMessage:
fmt.Println(string(messageData))
case websocket.BinaryMessage:
fmt.Println(messageData)
case websocket.CloseMessage:
case websocket.PingMessage:
case websocket.PongMessage:
default:
}
}
}
return "", nil
}
type HTTPRequestOption func(*http.Request) error
func InvokeSetHTTPHeader(header, val string) HTTPRequestOption {
return func(r *http.Request) error {
r.Header.Set(header, val)
return nil
}
}
type RestRequestOption func(*rest.Request) error
func InvokeSetRestRequestHeader(header string, val string) RestRequestOption {
return func(r *rest.Request) error {
r.SetHeader(header, val)
return nil
}
}