@spec boot(Beacon.Config.t()) :: Supervisor.on_start_child() | {:error, :unreachable}

Boot a site.

It will restart the Site Supervisor if it's already running, otherwise it will start it in the main Beacon Supervisor.

This function is not necessary to be called in most cases, as Beacon will automatically boot all sites when it starts, but in some cases where a site is started with the :manual mode, you may want to call this function to boot the site in the :live mode to active resource loading and PubSub events broadcasting.

Note that :live sites that are not reachable will not be started, see deployment topologies for more info.

Start Beacon and a supervisor for each site, which will load all layouts, pages, components, and so on.

You must include the Beacon supervisor on each application that you want it loaded. For a single Phoenix application that would go in the children list on the file lib/my_app/application.ex. For Umbrella apps you can have multiple apps running Beacon, suppose your project has 3 apps: core (regular app), blog (phoenix app), and marketing (phoenix app) and you want to load one Beacon instance on each Phoenix app, so you would include Beacon in the list of children applications in both blog and marketing applications with their own :sites configuration.

Note that each Beacon instance may have multiple sites and each site loads in its own supervisor. That gives you the flexibility to plan your architecture from simple to complex environments. For example, you can have a single site serving all pages in a single Phoenix application or you can create a new site to isolate a landing page for a marketing campaign that may receive too much traffic.

See Beacon.Router and Deployment Topologies for more information.

Options

Each site in :sites may have its own configuration, see all available options at Beacon.Config.new/1.

Examples

# runtime.exs
config :beacon,
  my_site: [site: :my_site, repo: MyApp.Repo, endpoint: MyAppWeb.Endpoint, router: MyAppWeb.Router]

# lib/my_app/application.ex
def start(_type, _args) do
  children = [
    MyApp.Repo,
    {Phoenix.PubSub, name: MyApp.PubSub},
    MyAppWeb.Endpoint,
    {Beacon,
     [
       sites: [
         Application.fetch_env!(:beacon, :my_site)
       ]
     ]}
  ]

  opts = [strategy: :one_for_one, name: MyApp.Supervisor]
  Supervisor.start_link(children, opts)
end