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NervesHub

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This is the source code for the NervesHub firmware update and device management server.

Important

This is the 2.0 development branch of NervesHub. If you have been using NervesHub prior to around April, 2023 and are not following 2.0 development, see the maint-v1.0 branch. The maint-v1.0 branch is being used in production. 2.0 development is in progress, and we don't have guides or good documentation yet. If you use the 2.0 development branch, we don't expect breaking changes, but please bear with us as we complete the 2.0 release.

Project overview and setup

Development environment setup

For best compatibility with Erlang SSL versions, we use Erlang/OTP 23.0.4. If you're coming to NervesHub without OTP 23 or earlier devices, don't worry about this. OTP 23.0.4 is difficult to install on Apple M1/M2 hardware so developing on Linux is highly recommended if you're keeping to the OTP 23.0.4 requirement.

The .tool-versions files contains the Erlang, Elixir and NodeJS versions. Install asdf-vm and run the following for quick setup:

cd nerves_hub_web

asdf plugin-add nodejs
bash ~/.asdf/plugins/nodejs/bin/import-release-team-keyring # this requires gpg to be installed
asdf install

Modify the .tool-versions if you want to use a later version of Erlang.

You'll also need to install fwup and xdelta3. See the fwup installation instructions and the xdelta3 instructions.

On Debian/Ubuntu, you will also need to install the following packages:

sudo apt install inotify-tools

Local development uses the host nerves-hub.org for connections and cert validation. To properly map to your local running server, you'll need to add a host record for it:

echo "127.0.0.1 nerves-hub.org" | sudo tee -a /etc/hosts

First time application setup

  1. Setup database connection

    NervesHub currently runs with Postgres 10.7. For development, you can use a local postgres or use the configured docker image:

    Using local postgres

    • Make sure your postgres is running
    • If you need to edit the DATABASE_URL, create a .env.dev.local and .env.test.local to adjust to your local postgres connection
  2. Fetch dependencies: mix do deps.get, compile

  3. Initialize the database: mix ecto.reset

  4. Compile web assets (this only needs to be done once and requires python2 or a symlink for python3): mix assets.install

Starting the application

  • mix phx.server - start the server process
  • iex -S mix phx.server - start the server with the interactive shell

Note: The whole app may need to be compiled the first time you run this, so please be patient

Once the server is running, by default in development you can access it at http://localhost:4000

In development you can login into a pre-generated account with the username nerveshub and password nerveshub.

Running Tests

  1. Make sure you've completed your database connection setup
  2. Fetch and compile test dependencies: MIX_ENV=test mix do deps.get, compile
  3. Initialize the test databases: MIX_ENV=test mix ecto.migrate.reset
  4. Run tests: make test

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Manage firmware updates for Nerves devices

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