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
|
package matterhook
import (
"bytes"
"encoding/json"
"fmt"
"github.com/gorilla/schema"
"io"
"io/ioutil"
"log"
"net/http"
"strconv"
)
// OMessage for mattermost incoming webhook. (send to mattermost)
type OMessage struct {
Channel string `json:"channel,omitempty"`
IconURL string `json:"icon_url,omitempty"`
IconEmoji string `json:"icon_emoji,omitempty"`
UserName string `json:"username,omitempty"`
Text string `json:"text"`
}
// IMessage for mattermost outgoing webhook. (received from mattermost)
type IMessage struct {
Token string `schema:"token"`
TeamID string `schema:"team_id"`
TeamDomain string `schema:"team_domain"`
ChannelID string `schema:"channel_id"`
ServiceID string `schema:"service_id"`
ChannelName string `schema:"channel_name"`
Timestamp string `schema:"timestamp"`
UserID string `schema:"user_id"`
UserName string `schema:"user_name"`
Text string `schema:"text"`
TriggerWord string `schema:"trigger_word"`
}
// Client for Mattermost.
type Client struct {
url string
In chan IMessage
Out chan OMessage
Config
}
type Config struct {
Port int
}
// New Mattermost client.
func New(url string, config Config) *Client {
c := &Client{url: url, In: make(chan IMessage), Out: make(chan OMessage), Config: config}
if c.Port == 0 {
c.Port = 9999
}
go c.StartServer()
return c
}
// StartServer starts a webserver listening for incoming mattermost POSTS.
func (c *Client) StartServer() {
mux := http.NewServeMux()
mux.Handle("/", c)
log.Printf("Listening on http://0.0.0.0:%v...\n", c.Port)
if err := http.ListenAndServe((":" + strconv.Itoa(c.Port)), mux); err != nil {
log.Fatal(err)
}
}
// ServeHTTP implementation.
func (c *Client) ServeHTTP(w http.ResponseWriter, r *http.Request) {
msg := IMessage{}
err := r.ParseForm()
if err != nil {
log.Println(err)
http.NotFound(w, r)
return
}
defer r.Body.Close()
decoder := schema.NewDecoder()
err = decoder.Decode(&msg, r.PostForm)
if err != nil {
log.Println(err)
http.NotFound(w, r)
return
}
c.In <- msg
}
// Receive returns an incoming message from mattermost outgoing webhooks URL.
func (c *Client) Receive() IMessage {
for {
select {
case msg := <-c.In:
return msg
}
}
}
// Send sends a msg to mattermost incoming webhooks URL.
func (c *Client) Send(msg OMessage) error {
buf, err := json.Marshal(msg)
if err != nil {
return err
}
resp, err := http.Post(c.url, "application/json", bytes.NewReader(buf))
if err != nil {
return err
}
defer resp.Body.Close()
// Read entire body to completion to re-use keep-alive connections.
io.Copy(ioutil.Discard, resp.Body)
if resp.StatusCode != 200 {
return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
}
return nil
}
|
