Sample application Simplenodeservice

This sample app is a modified version of the Node.js sample app from the AWS Elastic Beanstalk Tutorial

I mainly use it to demonstrate continuous delivery, automated quality gates and self-healing of the Open Source project Keptn as well as the monitoring capabilities of Dynatrace

Extended Feature Set

I've modified and extended it with a couple of additional API calls such as:

• echo a string
• invoke a server-side URL and return the byte size
• "login" with a username
• get the currently running version

4 Builds with different behavior

I've also built-in an option to slow down server-side code execution or to simulate failed requests. The app also comes with 4 built-in "build number" behaviors - meaning - if you launch the app and tell it to run as Build 1, 2, 3 or 4 it shows slightly different behavior. You can also launch the application in Production or Non-Production Mode:

Build	Behavior
1	Everything good
2	50% Failure Rate of /api/invoke
3	Everything good
4	20% Failure Rate of /api/invoke and twice as slow when running in production mode

Every build shows the build number and has its own color:

How to run it

There are different options on how to run / deploy that app

Run where	How
Local	npm start
Docker	docker run grabnerandi/simplenodeservice:1.0.0
k8s	https://github.com/grabnerandi/keptn-qualitygate-examples

Build it yourself

You can build the app yourself and also use the buildpush.sh for building the container and pushing it to your own container registry!