/
ws.go
340 lines (299 loc) · 8.19 KB
/
ws.go
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package ws
import (
"context"
"fmt"
"log"
"net/http"
"sync"
"time"
"github.com/gin-gonic/gin"
"github.com/gorilla/websocket"
"github.com/jwcjf/go-project-base/sdk/pkg"
)
// Manager 所有 websocket 信息
type Manager struct {
Group map[string]map[string]*Client
groupCount, clientCount uint
Lock sync.Mutex
Register, UnRegister chan *Client
Message chan *MessageData
GroupMessage chan *GroupMessageData
BroadCastMessage chan *BroadCastMessageData
}
// Client 单个 websocket 信息
type Client struct {
Id, Group string
Context context.Context
CancelFunc context.CancelFunc
Socket *websocket.Conn
Message chan []byte
}
// messageData 单个发送数据信息
type MessageData struct {
Id, Group string
Context context.Context
Message []byte
}
// groupMessageData 组广播数据信息
type GroupMessageData struct {
Group string
Message []byte
}
// 广播发送数据信息
type BroadCastMessageData struct {
Message []byte
}
// 读信息,从 websocket 连接直接读取数据
func (c *Client) Read(cxt context.Context) {
defer func(cxt context.Context) {
WebsocketManager.UnRegister <- c
log.Printf("client [%s] disconnect", c.Id)
if err := c.Socket.Close(); err != nil {
log.Printf("client [%s] disconnect err: %s", c.Id, err)
}
}(cxt)
for {
if cxt.Err() != nil {
break
}
messageType, message, err := c.Socket.ReadMessage()
if err != nil || messageType == websocket.CloseMessage {
break
}
log.Printf("client [%s] receive message: %s", c.Id, string(message))
c.Message <- message
}
}
// 写信息,从 channel 变量 Send 中读取数据写入 websocket 连接
func (c *Client) Write(cxt context.Context) {
defer func(cxt context.Context) {
log.Printf("client [%s] disconnect", c.Id)
if err := c.Socket.Close(); err != nil {
log.Printf("client [%s] disconnect err: %s", c.Id, err)
}
}(cxt)
for {
if cxt.Err() != nil {
break
}
select {
case message, ok := <-c.Message:
if !ok {
_ = c.Socket.WriteMessage(websocket.CloseMessage, []byte{})
return
}
log.Printf("client [%s] write message: %s", c.Id, string(message))
err := c.Socket.WriteMessage(websocket.TextMessage, message)
if err != nil {
log.Printf("client [%s] writemessage err: %s", c.Id, err)
}
case _ = <-c.Context.Done():
break
}
}
}
// 启动 websocket 管理器
func (manager *Manager) Start() {
log.Printf("websocket manage start")
for {
select {
// 注册
case client := <-manager.Register:
log.Printf("client [%s] connect", client.Id)
log.Printf("register client [%s] to group [%s]", client.Id, client.Group)
manager.Lock.Lock()
if manager.Group[client.Group] == nil {
manager.Group[client.Group] = make(map[string]*Client)
manager.groupCount += 1
}
manager.Group[client.Group][client.Id] = client
manager.clientCount += 1
manager.Lock.Unlock()
// 注销
case client := <-manager.UnRegister:
log.Printf("unregister client [%s] from group [%s]", client.Id, client.Group)
manager.Lock.Lock()
if mGroup, ok := manager.Group[client.Group]; ok {
if mClient, ok := mGroup[client.Id]; ok {
close(mClient.Message)
delete(mGroup, client.Id)
manager.clientCount -= 1
if len(mGroup) == 0 {
//log.Printf("delete empty group [%s]", client.Group)
delete(manager.Group, client.Group)
manager.groupCount -= 1
}
mClient.CancelFunc()
}
}
manager.Lock.Unlock()
}
}
}
// 处理单个 client 发送数据
func (manager *Manager) SendService() {
for {
select {
case data := <-manager.Message:
if groupMap, ok := manager.Group[data.Group]; ok {
if conn, ok := groupMap[data.Id]; ok {
conn.Message <- data.Message
}
}
}
}
}
// 处理 group 广播数据
func (manager *Manager) SendGroupService() {
for {
select {
// 发送广播数据到某个组的 channel 变量 Send 中
case data := <-manager.GroupMessage:
if groupMap, ok := manager.Group[data.Group]; ok {
for _, conn := range groupMap {
conn.Message <- data.Message
}
}
}
}
}
// 处理广播数据
func (manager *Manager) SendAllService() {
for {
select {
case data := <-manager.BroadCastMessage:
for _, v := range manager.Group {
for _, conn := range v {
conn.Message <- data.Message
}
}
}
}
}
// 向指定的 client 发送数据
func (manager *Manager) Send(cxt context.Context, id string, group string, message []byte) {
data := &MessageData{
Id: id,
Context: cxt,
Group: group,
Message: message,
}
manager.Message <- data
}
// 向指定的 Group 广播
func (manager *Manager) SendGroup(group string, message []byte) {
data := &GroupMessageData{
Group: group,
Message: message,
}
manager.GroupMessage <- data
}
// 广播
func (manager *Manager) SendAll(message []byte) {
data := &BroadCastMessageData{
Message: message,
}
manager.BroadCastMessage <- data
}
// 注册
func (manager *Manager) RegisterClient(client *Client) {
manager.Register <- client
}
// 注销
func (manager *Manager) UnRegisterClient(client *Client) {
manager.UnRegister <- client
}
// 当前组个数
func (manager *Manager) LenGroup() uint {
return manager.groupCount
}
// 当前连接个数
func (manager *Manager) LenClient() uint {
return manager.clientCount
}
// 获取 wsManager 管理器信息
func (manager *Manager) Info() map[string]interface{} {
managerInfo := make(map[string]interface{})
managerInfo["groupLen"] = manager.LenGroup()
managerInfo["clientLen"] = manager.LenClient()
managerInfo["chanRegisterLen"] = len(manager.Register)
managerInfo["chanUnregisterLen"] = len(manager.UnRegister)
managerInfo["chanMessageLen"] = len(manager.Message)
managerInfo["chanGroupMessageLen"] = len(manager.GroupMessage)
managerInfo["chanBroadCastMessageLen"] = len(manager.BroadCastMessage)
return managerInfo
}
// 初始化 wsManager 管理器
var WebsocketManager = Manager{
Group: make(map[string]map[string]*Client),
Register: make(chan *Client, 128),
UnRegister: make(chan *Client, 128),
GroupMessage: make(chan *GroupMessageData, 128),
Message: make(chan *MessageData, 128),
BroadCastMessage: make(chan *BroadCastMessageData, 128),
groupCount: 0,
clientCount: 0,
}
// gin 处理 websocket handler
func (manager *Manager) WsClient(c *gin.Context) {
ctx, cancel := context.WithCancel(context.Background())
upGrader := websocket.Upgrader{
// cross origin domain
CheckOrigin: func(r *http.Request) bool {
return true
},
// 处理 Sec-WebSocket-Protocol Header
Subprotocols: []string{c.GetHeader("Sec-WebSocket-Protocol")},
}
conn, err := upGrader.Upgrade(c.Writer, c.Request, nil)
if err != nil {
log.Printf("websocket connect error: %s", c.Param("channel"))
return
}
fmt.Println("token: ", c.Query("token"))
client := &Client{
Id: c.Param("id"),
Group: c.Param("channel"),
Context: ctx,
CancelFunc: cancel,
Socket: conn,
Message: make(chan []byte, 1024),
}
manager.RegisterClient(client)
go client.Read(ctx)
go client.Write(ctx)
time.Sleep(time.Second * 15)
pkg.FileMonitoringById(ctx, "temp/logs/job/db-20200820.log", c.Param("id"), c.Param("channel"), SendOne)
}
// UnWsClient ...
func (manager *Manager) UnWsClient(c *gin.Context) {
id := c.Param("id")
group := c.Param("channel")
WsLogout(id, group)
c.Set("result", "ws close success")
c.JSON(http.StatusOK, gin.H{
"code": http.StatusOK,
"data": "ws close success",
"msg": "success",
})
}
// SendGroup ...
func SendGroup(msg []byte) {
WebsocketManager.SendGroup("leffss", []byte("{\"code\":200,\"data\":"+string(msg)+"}"))
fmt.Println(WebsocketManager.Info())
}
// SendAll ...
func SendAll(msg []byte) {
WebsocketManager.SendAll([]byte("{\"code\":200,\"data\":" + string(msg) + "}"))
fmt.Println(WebsocketManager.Info())
}
// SendOne ...
func SendOne(ctx context.Context, id string, group string, msg []byte) {
WebsocketManager.Send(ctx, id, group, []byte("{\"code\":200,\"data\":"+string(msg)+"}"))
fmt.Println(WebsocketManager.Info())
}
// WsLogout ...
func WsLogout(id string, group string) {
WebsocketManager.UnRegisterClient(&Client{Id: id, Group: group})
fmt.Println(WebsocketManager.Info())
}