Chat

Chat is a Web Application that allows the user, after register/login, to create chat rooms that allow every user to join. After joining a chat room the user can see live all the messages that being sent in this room and to participate by writing messages for all other users to see.

To set up the application locally:

• Install asdf if you haven't already
• Add erlang and elixir plugins asdf plugin add erlang and asdf plugin add elixir
• Run KERL_BUILD_DOCS=yes asdf install erlang 25.2 to install erlang
• Run asdf install elixir 1.14.2-otp-25 to install elixir
• Use the above versions globally with asdf global erlang 25.2 and asdf global elixir 1.14.2-opt-25
• Mix local hex mix local.hex
• Install phoenix cli mix archive.install hex phx_new 1.7.6
• Start a PostgreSQL DB (quick setup recommendation docker run --name chat_dev -e POSTGRES_PASSWORD=${YOUR_PASSWORD} -e POSTGRES_USER=${YOUR_USER} -p 5432:5432 -d postgres:alpine) note that if you have to change the user and password in the according env config file.

To start your Phoenix server:

• Run mix setup to install and setup dependencies
• Start Phoenix endpoint with mix phx.server or inside IEx with iex -S mix phx.server
• Now you can visit localhost:4000 from your browser.

To test the application:

• Run mix test in order to perform the unit tests
• Run iex -S mix phx.server and follow up by running ChatWeb.LoadTest.Interface.update_number_of_users(number_of_users, room_id) to perform a manually scalable load test (where number_of_users::integer and room_id::UUID)