local channel로 먼저 message를 보내봄

wshandler/wshandler.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/hex"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -73,6 +72,7 @@ type subhandler struct {
 	redisSync         *redis.Client
 	connInOutChan     chan *wsconn
 	deliveryChan      chan any
+	localDeliveryChan chan any
 	callReceiver      WebSocketMessageReceiver
 	connWaitGroup     sync.WaitGroup
 }
@@ -121,6 +121,7 @@ func NewWebsocketHandler(authglobal gocommon.AuthCollectionGlobal) (wsh *Websock
 			redisSync:         redisSync,
 			connInOutChan:     make(chan *wsconn),
 			deliveryChan:      make(chan any, 1000),
+			localDeliveryChan: make(chan any, 100),
 		}
 
 		authCaches[region] = sh
@@ -169,21 +170,11 @@ func (ws *WebsocketHandler) SetState(region string, accid primitive.ObjectID, st
 	ws.RedisSync.SetArgs(context.Background(), accid.Hex(), state, redis.SetArgs{Mode: "XX"}).Result()
 }
 
-var errNoRegion = errors.New("region is not valid")
-
-func (ws *WebsocketHandler) SendUpstreamMessage(region string, msg *UpstreamMessage) error {
+func (ws *WebsocketHandler) SendUpstreamMessage(region string, msg *UpstreamMessage) {
 	sh := ws.authCaches[region]
-	if sh == nil {
-		return errNoRegion
+	if sh != nil {
+		sh.localDeliveryChan <- msg
 	}
-
-	bt, err := json.Marshal(msg)
-	if err != nil {
-		return err
-	}
-
-	_, err = sh.redisSync.Publish(context.Background(), sh.redisMsgChanName, bt).Result()
-	return err
 }
 
 func (sh *subhandler) mainLoop(ctx context.Context) {
@@ -246,6 +237,53 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 	// 유저에게서 온 메세지, 소켓 연결/해체 처리
 	for {
 		select {
+		case usermsg := <-sh.localDeliveryChan:
+			// 로컬에 connection이 있는지 먼저 확인해 보기 위한 채널
+			// 없으면 publish한다.
+			switch usermsg := usermsg.(type) {
+			case *UpstreamMessage:
+				target := usermsg.Target
+				if target[0] == '@' {
+					conn := entireConns[target[1:]]
+					if conn != nil {
+						// 이 경우 아니면 publish 해야 함
+						conn.WriteMessage(websocket.TextMessage, usermsg.Body)
+						break
+					}
+				}
+				if bt, err := json.Marshal(usermsg); err == nil {
+					sh.redisSync.Publish(context.Background(), sh.redisMsgChanName, bt).Result()
+				}
+
+			case *CommandMessage:
+				if usermsg.Cmd == CommandType_JoinRoom && len(usermsg.Args) == 2 {
+					alias := usermsg.Args[0]
+					roomName := usermsg.Args[1]
+
+					conn := entireConns[alias]
+					if conn != nil {
+						findRoom(roomName, true).in(conn)
+						break
+					}
+				} else if usermsg.Cmd == CommandType_LeaveRoom && len(usermsg.Args) == 2 {
+					alias := usermsg.Args[0]
+					roomName := usermsg.Args[1]
+
+					conn := entireConns[alias]
+					if conn != nil {
+						if room := findRoom(roomName, false); room != nil {
+							room.out(conn)
+							break
+						}
+					}
+				}
+
+				// 위에서 break 안걸리면 나한테 없으므로 publish를 해야 함. 그러면 다른 호스트가 deliveryChan으로 받는다
+				if bt, err := json.Marshal(usermsg); err == nil {
+					sh.redisSync.Publish(context.Background(), sh.redisCmdChanName, bt).Result()
+				}
+			}
+
 		case usermsg := <-sh.deliveryChan:
 			switch usermsg := usermsg.(type) {
 			case *UpstreamMessage:
@@ -257,7 +295,6 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 						room.broadcast(usermsg)
 					}
 				} else if target[0] == '@' {
-					// TODO : 특정 유저에게만
 					conn := entireConns[target[1:]]
 					if conn != nil {
 						conn.WriteMessage(websocket.TextMessage, usermsg.Body)
@@ -273,7 +310,7 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 					if conn != nil {
 						findRoom(roomName, true).in(conn)
 					}
-				} else if usermsg.Cmd == CommandType_JoinRoom && len(usermsg.Args) == 2 {
+				} else if usermsg.Cmd == CommandType_LeaveRoom && len(usermsg.Args) == 2 {
 					alias := usermsg.Args[0]
 					roomName := usermsg.Args[1]