后台：服务器列表编辑

shared/db/Counter.ts

@@ -22,6 +22,12 @@ export default class Counter extends BaseModel {
     return counter?.seq;
   }
 
+  public static async getCounter(param:{name: string, def: number}, lean = true) {
+    let {name, def:defaultVal} = param;
+    let counter: CounterType = await CounterModel.findOne({ name }).lean(lean);
+    return counter?.seq||defaultVal;
+  }
+
 }
 
 export const CounterModel = getModelForClass(Counter);