Hi All,

I am writing this blog to describe some easy steps to deploy a Node.js application into the SAP cloud foundry environment.

It is the first time for me to setup Node.js environment, so there may be some mistakes on this article.

Environment

Local PC

• Ubuntu18.04.01 LTS on VMWare Workstation
• cf CLI 6.43.0
• node.js 11.10.1
• npm 6.7.0

Cloud Foundry

• Nodejs Buildpack version 1.6.40
• CF Trial (Europe – Frankfurt)

Prerequisites

• your space is created on Cloud Foundry environment
• cf CLI is installed on Local PC(see the official page for the installation)

Steps

1. Install Node.js

Since I have never used Node.js on my local PC, I installed Node.js first.

# Install Node.js using PPA
curl -sL https://deb.nodesource.com/setup_11.x | sudo -E bash -
apt show nodejs
sudo apt install nodejs

# Check if it is successful
node --version
nmp --version

2. Run Hello world for checking Node.js

# Create a folder
mkdir sample && cd sample

# Create hello.js, which shows just "Hello world"
echo 'console.log("Hello, World!");' > hello.js

# Run
node hello.js

3. Clone sample repository

Clone sample repository from GitHub.

# Clone repository
git clone -b 1_REST_persist_in_Memory https://github.com/SAP/cloud-cf-helloworld-nodejs.git
cd cloud-cf-helloworld-nodejs

# configure npm
npm config set @sap:registry https://npm.sap.com

# npm instll
npm install
npm install --save express body-parser axios

4. Try Node.js on local PC

Run Node.js and see the result via browser.

# From directry of cloned
nodejs server.js

Open URL via browser.

http://localhost:8088/users

5. Deploy the app into Cloud Foundry

Using CF CLI, login and deploy the app into Cloud Foundly

cf api https://api.cf.eu10.hana.ondemand.com
cf login

# From directory of cloned repository
cf push sample-nodejs

Successfully deployed!

Now it works on Public internet space.

Appendix

Package.json

Node.js dependent information is in package.json.

{
  "name": "SAP-CP-CF-HelloWorld",
  "description": "Sample SAP-CP-CF Hello World Restful Service",
  "version": "0.0.1",
  "private": true,
  "dependencies": {
    "express": "4.15.3",
    "body-parser": "1.17.2"
  },
  "engines": {
    "node": "6.x.x"
  },  
  "scripts": {
    "start": "node server.js"
  }
}

manifest.yml

Cloud Foundry dependent information is in manifest.yml.

---
applications:
- name: sapcpcfhw
  path: .
  buildpack: nodejs_buildpack
  memory: 128M