chore(functions/v2): Migrate uploadFile sample to gen2 (#2965)

Author: andyccs-google

functions/http/uploadFile/index.js

@@ -25,11 +25,13 @@ const path = require('path');
 const os = require('os');
 const fs = require('fs');
 
+const functions = require('@google-cloud/functions-framework');
+
 // Node.js doesn't have a built-in multipart/form-data parsing library.
 // Instead, we can use the 'busboy' library from NPM to parse these requests.
 const Busboy = require('busboy');
 
-exports.uploadFile = (req, res) => {
+functions.http('uploadFile', (req, res) => {
   if (req.method !== 'POST') {
     // Return a "method not allowed" error
     return res.status(405).end();
@@ -94,5 +96,5 @@ exports.uploadFile = (req, res) => {
   });
 
   busboy.end(req.rawBody);
-};
+});
 // [END functions_http_form_data]

functions/http/uploadFile/package.json

@@ -12,6 +12,7 @@
     "node": ">=12.0.0"
   },
   "dependencies": {
+    "@google-cloud/functions-framework": "^3.1.3",
     "@google-cloud/storage": "^6.0.0",
     "busboy": "^1.0.0"
   }