fix friend bug

internal/rpc/friend/friend.go

@@ -293,7 +293,6 @@ func (s *friendServer) ImportFriend(ctx context.Context, req *pbFriend.ImportFri
 //process Friend application
 func (s *friendServer) AddFriendResponse(ctx context.Context, req *pbFriend.AddFriendResponseReq) (*pbFriend.AddFriendResponseResp, error) {
 	log.NewInfo(req.CommID.OperationID, "AddFriendResponse args ", req.String())
-
 	if !token_verify.CheckAccess(req.CommID.OpUserID, req.CommID.FromUserID) {
 		log.NewError(req.CommID.OperationID, "CheckAccess false ", req.CommID.OpUserID, req.CommID.FromUserID)
 		return &pbFriend.AddFriendResponseResp{CommonResp: &pbFriend.CommonResp{ErrCode: constant.ErrAccess.ErrCode, ErrMsg: constant.ErrAccess.ErrMsg}}, nil
@@ -319,6 +318,7 @@ func (s *friendServer) AddFriendResponse(ctx context.Context, req *pbFriend.AddF
 
 	//Change the status of the friend request form
 	if req.HandleResult == constant.FriendFlag {
+		var isInsert int
 		//Establish friendship after find friend relationship not exists
 		_, err := imdb.GetFriendRelationshipFromFriend(req.CommID.FromUserID, req.CommID.ToUserID)
 		if err == nil {
@@ -331,6 +331,7 @@ func (s *friendServer) AddFriendResponse(ctx context.Context, req *pbFriend.AddF
 				log.NewError(req.CommID.OperationID, "InsertToFriend failed ", err.Error(), toInsertFollow)
 				return &pbFriend.AddFriendResponseResp{CommonResp: &pbFriend.CommonResp{ErrCode: constant.ErrDB.ErrCode, ErrMsg: constant.ErrDB.ErrMsg}}, nil
 			}
+			isInsert = 1
 		}
 
 		_, err = imdb.GetFriendRelationshipFromFriend(req.CommID.ToUserID, req.CommID.FromUserID)
@@ -343,7 +344,10 @@ func (s *friendServer) AddFriendResponse(ctx context.Context, req *pbFriend.AddF
 				log.NewError(req.CommID.OperationID, "InsertToFriend failed ", err.Error(), toInsertFollow)
 				return &pbFriend.AddFriendResponseResp{CommonResp: &pbFriend.CommonResp{ErrCode: constant.ErrDB.ErrCode, ErrMsg: constant.ErrDB.ErrMsg}}, nil
 			}
-			// cache rpc
+			isInsert = 1
+		}
+		// cache rpc
+		if isInsert == 1 {
 			delFriendIDListFromCacheReq := &pbCache.DelFriendIDListFromCacheReq{OperationID: req.CommID.OperationID}
 			etcdConn := getcdv3.GetDefaultConn(config.Config.Etcd.EtcdSchema, strings.Join(config.Config.Etcd.EtcdAddr, ","), config.Config.RpcRegisterName.OpenImCacheName, req.CommID.OperationID)
 			if etcdConn == nil {