refactor: clietn in msggateway

Signed-off-by: rfyiamcool <rfyiamcool@163.com>

internal/msggateway/client.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"runtime/debug"
 	"sync"
+	"sync/atomic"
 
 	"github.com/openimsdk/open-im-server/v3/pkg/msgprocessor"
 
@@ -70,7 +71,7 @@ type Client struct {
 	IsBackground   bool   `json:"isBackground"`
 	ctx            *UserConnContext
 	longConnServer LongConnServer
-	closed         bool
+	closed         atomic.Bool
 	closedErr      error
 	token          string
 }
@@ -102,18 +103,14 @@ func (c *Client) ResetClient(
 	c.ctx = ctx
 	c.longConnServer = longConnServer
 	c.IsBackground = false
-	c.closed = false
+	c.closed.Store(false)
 	c.closedErr = nil
 	c.token = token
 }
 
 func (c *Client) pingHandler(_ string) error {
-	c.conn.SetReadDeadline(pongWait)
-	err := c.writePongMsg()
-	if err != nil {
-		return err
-	}
-	return nil
+	_ = c.conn.SetReadDeadline(pongWait)
+	return c.writePongMsg()
 }
 
 func (c *Client) readMessage() {
@@ -124,9 +121,11 @@ func (c *Client) readMessage() {
 		}
 		c.close()
 	}()
+
 	c.conn.SetReadLimit(maxMessageSize)
 	_ = c.conn.SetReadDeadline(pongWait)
 	c.conn.SetPingHandler(c.pingHandler)
+
 	for {
 		messageType, message, returnErr := c.conn.ReadMessage()
 		if returnErr != nil {
@@ -134,11 +133,13 @@ func (c *Client) readMessage() {
 			c.closedErr = returnErr
 			return
 		}
+
 		log.ZDebug(c.ctx, "readMessage", "messageType", messageType)
-		if c.closed { // 连接刚置位已经关闭，但是协程还没退出的场景
+		if c.closed.Load() { // 连接刚置位已经关闭，但是协程还没退出的场景
 			c.closedErr = ErrConnClosed
 			return
 		}
+
 		switch messageType {
 		case MessageBinary:
 			_ = c.conn.SetReadDeadline(pongWait)
@@ -150,9 +151,11 @@ func (c *Client) readMessage() {
 		case MessageText:
 			c.closedErr = ErrNotSupportMessageProtocol
 			return
+
 		case PingMessage:
 			err := c.writePongMsg()
 			log.ZError(c.ctx, "writePongMsg", err)
+
 		case CloseMessage:
 			c.closedErr = ErrClientClosed
 			return
@@ -163,10 +166,10 @@ func (c *Client) readMessage() {
 
 func (c *Client) handleMessage(message []byte) error {
 	if c.IsCompress {
-		var decompressErr error
-		message, decompressErr = c.longConnServer.DeCompress(message)
-		if decompressErr != nil {
-			return utils.Wrap(decompressErr, "")
+		var err error
+		message, err = c.longConnServer.DeCompress(message)
+		if err != nil {
+			return utils.Wrap(err, "")
 		}
 	}
 	var binaryReq Req
@@ -174,18 +177,26 @@ func (c *Client) handleMessage(message []byte) error {
 	if err != nil {
 		return utils.Wrap(err, "")
 	}
+
 	if err := c.longConnServer.Validate(binaryReq); err != nil {
 		return utils.Wrap(err, "")
 	}
+
 	if binaryReq.SendID != c.UserID {
 		return utils.Wrap(errors.New("exception conn userID not same to req userID"), binaryReq.String())
 	}
+
 	ctx := mcontext.WithMustInfoCtx(
 		[]string{binaryReq.OperationID, binaryReq.SendID, constant.PlatformIDToName(c.PlatformID), c.ctx.GetConnID()},
 	)
+
 	log.ZDebug(ctx, "gateway req message", "req", binaryReq.String())
-	var messageErr error
-	var resp []byte
+
+	var (
+		resp       []byte
+		messageErr error
+	)
+
 	switch binaryReq.ReqIdentifier {
 	case WSGetNewestSeq:
 		resp, messageErr = c.longConnServer.GetSeq(ctx, binaryReq)
@@ -216,15 +227,21 @@ func (c *Client) setAppBackgroundStatus(ctx context.Context, req Req) ([]byte, e
 	if messageErr != nil {
 		return nil, messageErr
 	}
+
 	c.IsBackground = isBackground
 	// todo callback
 	return resp, nil
 }
 
 func (c *Client) close() {
+	if c.closed.Load() {
+		return
+	}
+
 	c.w.Lock()
 	defer c.w.Unlock()
-	c.closed = true
+
+	c.closed.Store(true)
 	c.conn.Close()
 	c.longConnServer.UnRegister(c)
 }
@@ -244,6 +261,7 @@ func (c *Client) replyMessage(ctx context.Context, binaryReq *Req, err error, re
 	if err != nil {
 		log.ZWarn(ctx, "wireBinaryMsg replyMessage", err, "resp", mReply.String())
 	}
+
 	if binaryReq.ReqIdentifier == WsLogoutMsg {
 		return errors.New("user logout")
 	}
@@ -280,39 +298,42 @@ func (c *Client) KickOnlineMessage() error {
 }
 
 func (c *Client) writeBinaryMsg(resp Resp) error {
-	c.w.Lock()
-	defer c.w.Unlock()
-	if c.closed {
+	if c.closed.Load() {
 		return nil
 	}
 
-	resultBuf := bufferPool.Get().([]byte)
 	encodedBuf, err := c.longConnServer.Encode(resp)
 	if err != nil {
 		return utils.Wrap(err, "")
 	}
+
+	c.w.Lock()
+	defer c.w.Unlock()
+
 	_ = c.conn.SetWriteDeadline(writeWait)
 	if c.IsCompress {
-		var compressErr error
-		resultBuf, compressErr = c.longConnServer.Compress(encodedBuf)
+		resultBuf, compressErr := c.longConnServer.Compress(encodedBuf)
 		if compressErr != nil {
 			return utils.Wrap(compressErr, "")
 		}
 		return c.conn.WriteMessage(MessageBinary, resultBuf)
-	} else {
-		return c.conn.WriteMessage(MessageBinary, encodedBuf)
 	}
+
+	return c.conn.WriteMessage(MessageBinary, encodedBuf)
 }
 
 func (c *Client) writePongMsg() error {
-	c.w.Lock()
-	defer c.w.Unlock()
-	if c.closed {
+	if c.closed.Load() {
 		return nil
 	}
+
+	c.w.Lock()
+	defer c.w.Unlock()
+
 	err := c.conn.SetWriteDeadline(writeWait)
 	if err != nil {
 		return utils.Wrap(err, "")
 	}
+
 	return c.conn.WriteMessage(PongMessage, nil)
 }