IBM/expressjs-openwhisk

Name: expressjs-openwhisk

Owner: International Business Machines

Description: Apache OpenWhisk Web action redirecting request to Express.js applications

Created: 2017-05-11 20:49:54.0

Updated: 2018-02-22 12:06:17.0

Pushed: 2017-08-30 12:41:10.0

Homepage:

Size: 12

Language: JavaScript

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README

This project shows how to deploy new and existing Express.js applications to OpenWhisk. This tutorial takes less then 5 minutes to complete.

Prerequisite

• Apache OpenWhisk
• node.js
• Bluemix account

Steps

1. Create new Express.js application
2. Change relative paths
3. Create OpenWhisk action
4. Deploy application
5. Test application

1. Create new Express.js application

Open a terminal, and type

m install express-generator -g
press --view=pug myexpressapp
 myexpressapp
m install 

This creates a minimal Express.js application. To check it is working, start the application by typing the command npm start and load http://localhost:3000 in a browser.

2. Change relative paths

The generated Express.s application expects resources to be installed in the domain root folder but by default Apache OpenWhisk web actions are served from a sub-directory.

Change views/layout.pug:

ype html

ad
title= title
if baseurl
  base(href=baseurl)
link(rel='stylesheet', href='stylesheets/style.css')
dy
block content

3. Create OpenWhisk action

Add expressjs-openwhisk module dependency in your project.

m install expressjs-openwhisk --save

Then create the Apache OpenWhisk action handling Web requests by forwarding them to expressjs-openwhisk. Create a file named action.js with this content:

t app = require('./app');
t forward = require('expressjs-openwhisk')(app);

tion main(request) {
turn forward(request);


rts.main = main;

In package.json, add the following entry:

main": "action.js",
..

4. Deploy application

To deploy the application and dependencies on Bluemix, do:

p -r app.zip .
k action update express app.zip --kind nodejs:6 --web raw \
-p baseurl https://openwhisk.ng.bluemix.net/api/v1/web/<org>_<space>/default/express/

Replace <org> and <space> by your Bluemix organization and space, respectively.

5. Test application

And finally test the application by opening https://openwhisk.ng.bluemix.net/api/v1/web/<org>_<space>/default/express in a browser

License

Apache 2.0