A GenServer that maintains a singleton Eppo SDK client instance for querying feature flags.

The server can be started directly:

config = %EppoSdk.Client.Config{
  api_key: api_key,
  assignment_logger: EppoSdk.AssignmentLogger,
  is_graceful_mode: true,
  poll_interval_seconds: 30,
  poll_jitter_seconds: 3
}

{:ok, _pid} = EppoSdk.Server.start_link(config)
client = EppoSdk.Server.get_instance()

Or added to your application's supervision tree:

# In your application.ex
defmodule YourApp.Application do
  use Application

  def start(_type, _args) do
    config = %EppoSdk.Client.Config{
      api_key: System.get_env("EPPO_API_KEY"),
      assignment_logger: YourApp.AssignmentLogger,
      # ... other config options ...
    }

    children = [
      # ... other children ...
      {EppoSdk.Server, config}
    ]

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