채널이름 고정으로 계산

rpc/rpc.go

@@ -3,7 +3,9 @@ package rpc
 import (
 	"bytes"
 	"context"
+	"crypto/md5"
 	"encoding/gob"
+	"encoding/hex"
 	"errors"
 	"fmt"
 	"path"
@@ -55,7 +57,12 @@ func Start(ctx context.Context, redisClient *redis.Client) {
 		return
 	}
 
-	pubsubName := primitive.NewObjectID().Hex()[6:]
+	hash := md5.New()
+	for k := range engine.receivers {
+		hash.Write([]byte(k))
+	}
+	pubsubName := hex.EncodeToString(hash.Sum(nil))[:16]
+
 	engine.publish = func(s []byte) error {
 		_, err := redisClient.Publish(ctx, pubsubName, s).Result()
 		return err