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
|
package executor
import (
"github.com/fasthttp/websocket"
json "github.com/json-iterator/go"
"github.com/spiral/roadrunner/v2/pkg/pubsub"
"github.com/spiral/roadrunner/v2/plugins/logger"
"github.com/spiral/roadrunner/v2/plugins/websockets/commands"
"github.com/spiral/roadrunner/v2/plugins/websockets/connection"
"github.com/spiral/roadrunner/v2/plugins/websockets/storage"
)
type Response struct {
Topic string `json:"topic"`
Payload []string `json:"payload"`
}
type Executor struct {
conn *connection.Connection
storage *storage.Storage
log logger.Logger
// associated connection ID
connID string
pubsub pubsub.PubSub
}
// NewExecutor creates protected connection and starts command loop
func NewExecutor(conn *connection.Connection, log logger.Logger, bst *storage.Storage, connID string, pubsubs pubsub.PubSub) *Executor {
return &Executor{
conn: conn,
connID: connID,
storage: bst,
log: log,
pubsub: pubsubs,
}
}
func (e *Executor) StartCommandLoop() error {
for {
mt, data, err := e.conn.Read()
if err != nil {
if mt == -1 {
return err
}
return err
}
msg := &pubsub.Msg{}
err = json.Unmarshal(data, msg)
if err != nil {
e.log.Error("error unmarshal message", "error", err)
continue
}
switch msg.Command() {
// handle leave
case commands.Join:
// TODO access validators model update
//err := validator.NewValidator().AssertTopicsAccess(e.handler, e.httpRequest, msg.Topics()...)
//// validation error
//if err != nil {
// e.log.Error("validation error", "error", err)
//
// resp := &Response{
// Topic: "#join",
// Payload: msg.Topics(),
// }
//
// packet, err := json.Marshal(resp)
// if err != nil {
// e.log.Error("error marshal the body", "error", err)
// return err
// }
//
// err = e.conn.Write(websocket.BinaryMessage, packet)
// if err != nil {
// e.log.Error("error writing payload to the connection", "payload", packet, "error", err)
// continue
// }
//
// continue
//}
// associate connection with topics
e.storage.Store(e.connID, msg.Topics())
resp := &Response{
Topic: "@join",
Payload: msg.Topics(),
}
packet, err := json.Marshal(resp)
if err != nil {
e.log.Error("error marshal the body", "error", err)
continue
}
err = e.conn.Write(websocket.BinaryMessage, packet)
if err != nil {
e.log.Error("error writing payload to the connection", "payload", packet, "error", err)
continue
}
err = e.pubsub.Subscribe(msg.Topics()...)
if err != nil {
e.log.Error("error subscribing to the provided topics", "topics", msg.Topics(), "error", err.Error())
continue
}
// handle leave
case commands.Leave:
// remove associated connections from the storage
e.storage.Remove(e.connID, msg.Topics())
resp := &Response{
Topic: "@leave",
Payload: msg.Topics(),
}
packet, err := json.Marshal(resp)
if err != nil {
e.log.Error("error marshal the body", "error", err)
continue
}
err = e.pubsub.Unsubscribe(msg.Topics()...)
if err != nil {
e.log.Error("error subscribing to the provided topics", "topics", msg.Topics(), "error", err.Error())
continue
}
err = e.conn.Write(websocket.BinaryMessage, packet)
if err != nil {
e.log.Error("error writing payload to the connection", "payload", packet, "error", err)
continue
}
case commands.Headers:
default:
e.log.Warn("unknown command", "command", msg.Command())
}
}
}
|
