Phoenix.Sync.Electric (Phoenix.Sync v0.3.4)

A Plug.Router and Phoenix.Router compatible Plug handler that allows you to mount the full Electric shape api into your application.

Unlike Phoenix.Sync.Router.sync/2 this allows your app to serve shapes defined by table parameters, much like the Electric application.

The advantage is that you're free to put your own authentication and authorization Plugs in front of this endpoint, integrating the auth for your shapes API with the rest of your app.

Configuration

Before configuring your router, you must install and configure the :phoenix_sync application.

See the documentation for embedding electric for details on embedding Electric into your Elixir application.

Plug Integration

Mount this Plug into your router using Plug.Router.forward/2.

defmodule MyRouter do
  use Plug.Router, copy_opts_to_assign: :config
  use Phoenix.Sync.Electric

  plug :match
  plug :dispatch

  forward "/shapes",
    to: Phoenix.Sync.Electric,
    init_opts: [opts_in_assign: :config]
end

You must configure your Plug.Router with copy_opts_to_assign and pass the key you configure here (in this case :config) to the Phoenix.Sync.Electric plug in it's init_opts.

In your application, build your Electric confguration using Phoenix.Sync.plug_opts() and pass the result to your router as phoenix_sync:

# in application.ex
def start(_type, _args) do
  children = [
    {Bandit, plug: {MyRouter, phoenix_sync: Phoenix.Sync.plug_opts()}, port: 4000}
  ]

  Supervisor.start_link(children, strategy: :one_for_one, name: MyApp.Supervisor)
end

Phoenix Integration

Use Phoenix.Router.forward/2 in your router:

defmodule MyAppWeb.Router do
  use Phoenix.Router

  pipeline :shapes do
    # your authz plugs
  end

  scope "/shapes" do
    pipe_through [:shapes]

    forward "/", Phoenix.Sync.Electric
  end
end

As for the Plug integration, include the configuration at runtime within the Application.start/2 callback.

# in application.ex
def start(_type, _args) do
  children = [
    # ...
    {MyAppWeb.Endpoint, phoenix_sync: Phoenix.Sync.plug_opts()}
  ]

  Supervisor.start_link(children, strategy: :one_for_one, name: MyApp.Supervisor)
end