Add old file deletion daily job

config/default.json5

@@ -54,4 +54,7 @@
     ],
     default_url_domain_for_files: 0,
     default_url_domain_for_urls: 1,
+
+    // 1 hour in ms
+    delete_old_files_interval: 3600000,
 }

config/production.json5

@@ -26,4 +26,7 @@
     ],
     default_url_domain_for_files: 0,
     default_url_domain_for_urls: 0,
+
+    // 1 day in ms
+    delete_old_files_interval: 86400000
 }

src/App.ts

@@ -42,7 +42,7 @@ import MagicLinkController from "swaf/auth/magic_link/MagicLinkController";
 import AddUsedToMagicLinksMigration from "swaf/auth/magic_link/AddUsedToMagicLinksMigration";
 import MakeMagicLinksSessionNotUniqueMigration from "swaf/auth/magic_link/MakeMagicLinksSessionNotUniqueMigration";
 import AddPasswordToUsersMigration from "swaf/auth/password/AddPasswordToUsersMigration";
-import DropNameFromUsers from "swaf/auth/migrations/DropNameFromUsers";
+import DeleteOldFilesJobComponent from "./DeleteOldFilesJobComponent";
 import packageJson = require('./package.json');
 import ReplaceTtlWithExpiresAtFilesTable from "./migrations/ReplaceTtlWithExpiresAtFilesTable";
 
@@ -117,6 +117,10 @@ export default class App extends Application {
 
         // WebSocket server
         this.use(new WebSocketServerComponent(this, this.as(ExpressAppComponent), this.as(RedisComponent)));
+
+
+        // Jobs
+        this.use(new DeleteOldFilesJobComponent());
     }
 
     private registerWebSocketListeners() {

src/DeleteOldFilesJobComponent.ts

@@ -0,0 +1,62 @@
+import ApplicationComponent from "swaf/ApplicationComponent";
+import FileModel from "./models/FileModel";
+import {logger} from "swaf/Logger";
+import config from "config";
+import {WhereTest} from "swaf/db/ModelQuery";
+import MysqlComponent from "swaf/components/MysqlComponent";
+import FileController from "./controllers/FileController";
+import Timeout = NodeJS.Timeout;
+
+export default class DeleteOldFilesJobComponent extends ApplicationComponent {
+    private timeout?: Timeout;
+    private readonly interval: number = config.get<number>('delete_old_files_interval');
+
+    public async start(): Promise<void> {
+        if (this.getApp().as(MysqlComponent).canServe()) {
+            await this.run();
+        }
+
+        this.schedule();
+    }
+
+    public async stop(): Promise<void> {
+        if (this.timeout) {
+            clearInterval(this.timeout);
+            this.timeout = undefined;
+        }
+    }
+
+    private schedule(): void {
+        if (this.timeout) {
+            clearInterval(this.timeout);
+            this.timeout = undefined;
+        }
+
+        this.timeout = setInterval(() => {
+            if (this.getApp().as(MysqlComponent).canServe()) {
+                this.run().catch(err => logger.error(err));
+            }
+        }, this.interval);
+        logger.info(`Scheduled old file deletion job every ${this.interval}ms`);
+
+    }
+
+    private async run(): Promise<void> {
+        const filesToDelete = await FileModel.select()
+            .where('expires_at', new Date(), WhereTest.LE)
+            .get();
+
+        if (filesToDelete.length > 0) {
+            logger.info('Deleting old files...');
+        } else {
+            logger.info('No old file to delete.');
+            return;
+        }
+
+        for (const file of filesToDelete) {
+            logger.info(`Deleting ${file.id}`);
+            if (!file.shouldBeDeleted()) throw new Error('File should not be deleted.');
+            await FileController.deleteFile(file);
+        }
+    }
+}