demo-chat

A simple chat application.

Deployed version

Development

Configuration

The application only expects the redis-url parameter set.

The simplest way to set it is by creating .lein-env file and write there

{:redis-url "<your redis server>"}

VSCode

I've used VS Code and Calva plugin for development. Just instal them, open project folder and use "Calva Jack in" command.

Console

$ lein figwheel dev

Run tests:

$ lein test

Infrastructure

Circle CI. I've only managed to fail build on test failures. Compatible result reporters didn't work under my version of lein.

Eastwood is also running there.

Production Build

$ lein clean
$ lein with-profile prod uberjar

That should compile the clojurescript code first, and then create the standalone jar.

The jar could be run by

$ java -jar target/demo-chat.jar

It takes the following settings from the environment:

• PORT web server port. Defaults to 3000
• REDIS_URL redis server URL. Defaults to "redis://localhost:6379/"

For example

$ PORT=4200 REDIS_URL='redis://172.17.0.2:6379/' java -jar target/demo-chat.jar

Heroku

To run the app on Heroku you'll need to enable Redis addon. The simplest way is by Heroku CLI

heroku addons:create heroku-redis:hobby-dev -a <application name> --wait

Consult documentation for more options.

Area for improvements

• Proper test results in Circle
• Connectivity status on client
• Server logging
• Strategy for DB failure on server