This repo specifies the web backend and frontend for the Orcasound app that plays a live audio stream through the user's browser of choice. The backend is an Elixir app using the Phoenix framework. The Phoenix app serves a React app.
Orcasite uses PostGIS for location data inside of Postgres. To install on MacOS, run
brew install postgis
Language-level dependencies can be found under .tool-versions. As of this writing, they are:
erlang 21.0.4
elixir 1.7.1
nodejs 10.4.0
You can use a library like asdf to manage your language dependencies.
Once Erlang, Elixir, and Nodejs are installed and the repository has been cloned, install the project's dependencies with this command in the root directory:
mix deps.get
Set up the database with
mix ecto.create
and
mix ecto.migrate
Setting up the frontend requires npm. To set up the frontend:
cd assets
and
npm install
For the moment, there is only one feed to listen to. To create the feed in the database, start a console in the root directory:
iex -S mix
In the console, run:
attrs = %{location_point: Geo.WKT.decode!("SRID=4326;POINT(47.60621 -122.33207)"), name: "Orcasound Lab (Haro Strait)", node_name: "rpi_orcasound_lab", slug: "orcasound-lab"}
Orcasite.Radio.create_feed(attrs)
Finally, in another terminal, run the server with
iex -S mix phx.server
You should now be able to see the page when visiting
http://localhost:4000
For the moment, this app is running in a heroku instance with mix phx.server. To access the console, run:
heroku run POOL_SIZE=2 iex -S mix
The POOL_SIZE config var is necessary due to the current Postgres db having 20 connections. You can read more about it here.