fix(file-cache): retry error files queue update

backend/src/service/cache/file-cache.service.spec.ts

@@ -169,6 +169,10 @@ describe('FileCache', () => {
       path.resolve('myCacheFolder', 'files-errors', filenames[2]),
       path.resolve('myCacheFolder', 'files', filenames[2])
     );
+
+    // Check if the files have been added back to the queue
+    const queueFiles = filenames.map(name => path.resolve('myCacheFolder', 'files', name));
+    expect(cache['filesQueue']).toEqual(queueFiles);
   });
 
   it('should remove all error files when the error folder is not empty', async () => {

backend/src/service/cache/file-cache.service.ts

@@ -201,6 +201,11 @@ export default class FileCacheService {
         const cacheFilePath = path.join(this._fileFolder, filename);
         this._logger.debug(`Moving error file "${errorFilePath}" back to cache "${cacheFilePath}"`);
         await fs.rename(errorFilePath, cacheFilePath);
+        // Add the file to the queue once it is persisted in the cache folder
+        this.filesQueue.push(cacheFilePath);
+        if (this._settings.sendFileImmediately) {
+          this.triggerRun.emit('next');
+        }
       })
     );
   }

frontend/src/app/north/explore-cache/explore-cache.component.html

@@ -7,4 +7,4 @@ <h1>
     </div>
   </div>
 </div>
-<oib-error-files [northConnector]="northConnector"></oib-error-files>
+<oib-error-files *ngIf="northConnector" [northConnector]="northConnector"></oib-error-files>