room 인원을 count에 저장

wshandler/room.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"encoding/json"
 
+	"github.com/go-redis/redis/v8"
 	"github.com/gorilla/websocket"
 	"repositories.action2quare.com/ayo/gocommon/logger"
 )
@@ -16,10 +17,11 @@ type room struct {
 	name        string
 	destroyChan chan<- string
 	sendMsgChan chan<- send_msg_queue_elem
+	redisClient *redis.Client
 }
 
 // 만약 destroyChan가 nil이면 room이 비어도 파괴되지 않는다. 영구 유지되는 room
-func makeRoom(name string, destroyChan chan<- string, sendMsgChan chan<- send_msg_queue_elem) *room {
+func makeRoom(name string, redisClient *redis.Client, destroyChan chan<- string, sendMsgChan chan<- send_msg_queue_elem) *room {
 	return &room{
 		inChan:      make(chan *wsconn, 10),
 		outChan:     make(chan *wsconn, 10),
@@ -27,6 +29,7 @@ func makeRoom(name string, destroyChan chan<- string, sendMsgChan chan<- send_ms
 		name:        name,
 		destroyChan: destroyChan,
 		sendMsgChan: sendMsgChan,
+		redisClient: redisClient,
 	}
 }
 
@@ -70,9 +73,11 @@ func (r *room) loop(ctx context.Context, conns *map[string]*wsconn) (normalEnd b
 			return true
 
 		case conn := <-r.inChan:
+			r.redisClient.HIncrBy(ctx, r.name, "count", 1).Result()
 			(*conns)[conn.sender.Accid.Hex()] = conn
 
 		case conn := <-r.outChan:
+			r.redisClient.HIncrBy(ctx, r.name, "count", -1).Result()
 			delete((*conns), conn.sender.Accid.Hex())
 			if len(*conns) == 0 && r.destroyChan != nil {
 				r.destroyChan <- r.name