core: fix index creation (#197)

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.34.3",
+    "version": "2.34.4",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",

packages/hydrooj/src/model/task.ts

@@ -69,7 +69,10 @@ class WorkerService implements BaseService {
         async (doc) => {
             try {
                 logger.debug('Worker task: %o', doc);
+                const start = Date.now();
                 await this.handlers[doc.subType](doc);
+                const spent = Date.now() - start;
+                if (spent > 500) logger.warn('Slow worker task (%d ms): %s', spent, doc);
             } catch (e) {
                 logger.error('Worker task fail: ', e);
                 logger.error('%o', doc);

packages/hydrooj/src/service/db.ts

@@ -50,7 +50,12 @@ class MongoService implements BaseService {
 
     public async ensureIndexes<T>(coll: Collection<T>, ...args: IndexSpecification[]) {
         if (process.env.NODE_APP_INSTANCE !== '0') return;
-        const existed = await coll.listIndexes().toArray();
+        let existed: any[];
+        try {
+            existed = await coll.listIndexes().toArray();
+        } catch (e) {
+            existed = [];
+        }
         for (const index of args) {
             const i = existed.find(t => t.name == index.name || JSON.stringify(t.key) == JSON.stringify(index.key));
             if (!i) {