fix fecth-meta

service/cron-jobs/fetch-meta.js

@@ -72,21 +72,27 @@ async function fetchMetaFromDoubao(imageUrl) {
 
 
 async function run() {
-
   let done = 0;
   let duration = 0;
   let hour, minute, second;
   let start = Date.now();
 
-
   // 筛选出所有已经ready并且还没有title的图
   let query = { status: { $gte: 7000 }, $or: [{ copy: { $exists: false } }, { copy: null }] };
-  let docs = await models.Art.find(query).sort({ publishTime: 'desc' });
 
-  let total = docs.length;
+  let total = await models.Art.countDocuments();
   console.log('total:', total);
 
-  for (let doc of docs) {
+  models.Art
+    .find(query)
+    .sort({ publishTime: 'desc' })
+    .cursor()
+    .eachAsync(job)
+    .catch(err => console.error(err.message))
+    .then(() => require('process').exit(0))
+
+  async function job(doc) {
+    console.log(`process ${doc._id}`);
     let thumbUrl = `${config.resHost}/thumbs/v2/work/320/${doc._id}.png`;
     if (doc.hasSpecial) {
       thumbUrl = `${config.resHost}/thumbs/v2/special/320/${doc._id}.png`;
@@ -126,7 +132,6 @@ async function run() {
 
   }
 
-
 }