4.6.7 first pr (#726)

packages/service/common/file/utils.ts

@@ -0,0 +1,33 @@
+import fs from 'fs';
+import { tmpFileDirPath } from './constants';
+
+export const removeFilesByPaths = (paths: string[]) => {
+  paths.forEach((path) => {
+    fs.unlink(path, (err) => {
+      if (err) {
+        console.error(err);
+      }
+    });
+  });
+};
+
+/* cron job.  check expired tmp files */
+export const checkExpiredTmpFiles = () => {
+  // get all file name
+  const files = fs.readdirSync(tmpFileDirPath).map((name) => {
+    const timestampStr = name.split('-')[0];
+    const expiredTimestamp = timestampStr ? Number(timestampStr) : 0;
+
+    return {
+      filename: name,
+      expiredTimestamp,
+      path: `${tmpFileDirPath}/${name}`
+    };
+  });
+
+  // count expiredFiles
+  const expiredFiles = files.filter((item) => item.expiredTimestamp < Date.now());
+
+  // remove expiredFiles
+  removeFilesByPaths(expiredFiles.map((item) => item.path));
+};