读取节点列表时可以按照连接数排序

internal/db/models/node_dao.go

@@ -435,6 +435,16 @@ func (this *NodeDAO) ListEnabledNodesMatch(tx *dbs.Tx,
 		valueField = "load1m"
 		isAsc = false
 		ifNullValue = -1
+	case "connectionsAsc":
+		valueItem = "connections"
+		valueField = "total"
+		isAsc = true
+		ifNullValue = 1000
+	case "connectionsDesc":
+		valueItem = "connections"
+		valueField = "total"
+		isAsc = false
+		ifNullValue = -1
 	default:
 		query.Desc("level")
 	}

internal/rpc/services/service_node.go

@@ -225,6 +225,10 @@ func (this *NodeService) ListEnabledNodesMatch(ctx context.Context, req *pb.List
 		order = "loadAsc"
 	} else if req.LoadDesc {
 		order = "loadDesc"
+	} else if req.ConnectionsAsc {
+		order = "connectionsAsc"
+	} else if req.ConnectionsDesc {
+		order = "connectionsDesc"
 	}
 
 	nodes, err := models.SharedNodeDAO.ListEnabledNodesMatch(tx, req.NodeClusterId, configutils.ToBoolState(req.InstallState), configutils.ToBoolState(req.ActiveState), req.Keyword, req.NodeGroupId, req.NodeRegionId, req.Level, true, order, req.Offset, req.Size)