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Init.go
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Init.go
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package websocket
import (
"encoding/json"
"github.com/duxweb/go-fast/logger"
"github.com/olahol/melody"
"github.com/spf13/cast"
"log/slog"
"sync"
"time"
)
var Service *ServiceT
func New() *ServiceT {
return &ServiceT{
Websocket: melody.New(),
Clients: &sync.Map{},
Channels: &sync.Map{},
Agents: map[string]*Agent{},
}
}
func Init() {
Service = New()
Service.Run()
}
type Agent struct {
auth func(token string) (map[string]any, error)
event func(name string, client *Client) error
message func(message *Message, client *Client) error
}
type ServiceT struct {
Websocket *melody.Melody
Clients *sync.Map
Channels *sync.Map
Agents map[string]*Agent
}
type Message struct {
Id string `json:"id"`
Type string `json:"type"`
Client string `json:"client,omitempty"`
Channel string `json:"channel"`
Message string `json:"message"`
Data any `json:"data,omitempty"`
Meta any `json:"meta,omitempty"`
}
func (t *ServiceT) RegisterAgents(name string, agent *Agent) {
t.Agents[name] = agent
}
func (t *ServiceT) Run() {
// 连接处理
t.Websocket.HandleConnect(func(session *melody.Session) {
token := session.Request.Header.Get("token")
app := session.Request.URL.Query().Get("app")
agent, ok := t.Agents[app]
if !ok {
msg := "applications are not registered"
logger.Log("websocket").Error(msg)
_ = session.CloseWithMsg([]byte(msg))
}
data, err := agent.auth(token)
if err != nil {
logger.Log("websocket").Error("error", err)
_ = session.CloseWithMsg([]byte(err.Error()))
return
}
clientID := data["client_id"].(string)
// 把之前的客户端踢下线
RemoveClient(clientID)
// 创建新客户端
AddClient(app, session, clientID, token, data)
// 设置客户端在线
err = EventOnline(clientID)
if err != nil {
logger.Log("websocket").Error("Client Online", err)
_ = session.CloseWithMsg([]byte(err.Error()))
return
}
})
// 销毁处理
t.Websocket.HandleDisconnect(func(session *melody.Session) {
str, ok := session.Get("clientID")
if !ok {
return
}
clientID := cast.ToString(str)
logger.Log("websocket").Debug("Client Disconnect", slog.String("client", clientID))
// 移除客户端
RemoveConnClient(session)
// 发送离线
err := EventOffline(clientID)
if err != nil {
logger.Log("websocket").Error("Client Online", err)
}
})
// ping 处理
t.Websocket.HandlePong(func(session *melody.Session) {
str, ok := session.Get("clientID")
if !ok {
return
}
clientID := cast.ToString(str)
logger.Log("websocket").Debug("ping", slog.String("client", clientID))
_ = EventPing(clientID)
})
// 收到消息
t.Websocket.HandleMessage(func(s *melody.Session, msg []byte) {
name, _ := s.Get("clientID")
clientID := cast.ToString(name)
logger.Log("websocket").Debug("Ws Received", slog.String("client", clientID), slog.String("message", string(msg)))
data := Message{}
err := json.Unmarshal(msg, &data)
if err != nil {
logger.Log("websocket").Error("Ws Received", err, slog.String("client", clientID), slog.String("message", string(msg)))
return
}
client, err := GetClient(clientID)
if err != nil {
return
}
agent := Service.Agents[client.app]
err = agent.message(&data, client)
if err != nil {
logger.Log("websocket").Error("Ws Received", err)
return
}
msgData := map[string]any{
"type": "receive",
"data": map[string]any{
"id": data.Id,
"time": time.Now().Format("2006-01-02 15:04:05"),
},
}
logger.Log("websocket").Debug("ws send", slog.Any("data", msgData))
client.Send(msgData)
})
}