handler wrapper

Author: siloenix

controllers/DockerController.js

@@ -1,24 +1,20 @@
 const ValidationError = require('../errors/ValidationError');
 const DockerService = require('../services/DockerService');
 const extractYaml = require('../helpers/extractYaml');
+const handler = require('../helpers/handler');
 
 class DockerController {
-  static async applyYaml(req, res, next) {
-    try {
+  static async applyYaml(req, res) {
       const file = extractYaml(req.files);
       if (!file) {
-        next(new ValidationError('no file provided'));
-        return;
+        throw new ValidationError('no file provided');
       }
 
       const result = await DockerService.applyYaml(file.data.toString());
       res.json(result);
-    } catch (e) {
-      next(e);
-    }
   }
 }
 
-module.exports = DockerController;
+module.exports = handler(DockerController);
 
 

helpers/handler.js

@@ -0,0 +1,15 @@
+module.exports = function (controller) {
+  for (const property of Object.getOwnPropertyNames(controller)) {
+    let endpoint = controller[property];
+    if (typeof endpoint === 'function') {
+      controller[property] = async function (req, res, next) {
+        try {
+          await endpoint(req, res, next);
+        } catch (e) {
+          next(e)
+        }
+      }
+    }
+  }
+  return controller;
+};