core: add monitor/collect hook

packages/hydrooj/src/service/bus.ts

@@ -47,6 +47,7 @@ export interface EventMap extends LifecycleEvents, HandlerEvents {
     'system/setting': (args: Record<string, any>) => VoidReturn
     'bus/broadcast': (event: keyof EventMap, ...args: any[]) => VoidReturn
     'monitor/update': (type: 'server' | 'judge', $set: any) => VoidReturn
+    'monitor/collect': (info: any) => VoidReturn
     'api/update': () => void;
     'task/daily': () => void;
 

packages/hydrooj/src/service/monitor.ts

@@ -49,6 +49,7 @@ export async function feedback(): Promise<[string, StatusUpdate]> {
         const status = await db.db.admin().serverStatus();
         info.dbVersion = status.version;
     } catch (e) { }
+    await bus.serial('monitor/collect', info);
     const payload = dump(info, {
         replacer: (key, value) => {
             if (typeof value === 'function') return '';