nursery

The queue-tree root — a port of Oban.Nursery:

nursery (RestForOne, tolerance 5/30)
├── foreman: factory of queue supervisors (tolerance 20/60)
└── midwife: starts configured queues, handles start/stop signals

RestForOne mirrors nursery.ex’s rest_for_one: a foreman crash restarts the midwife too, whose initialiser re-starts the configured queues into the fresh foreman.

gleam_otp constraint: factory.restart_strategy is ignored for supervisor children, so queue supervisors are Transient (restarted on crash, removed by terminate_child) where Elixir’s DynamicSupervisor children are permanent — indistinguishable in practice, since supervisors never exit normal (parity §9).

Values

child

</>

pub fn child(
  config config: config.Config,
  foreman_name foreman_name: process.Name(
    factory_supervisor.Message(queue_supervisor.QueueOptions, Nil),
  ),
) -> supervision.ChildSpecification(static_supervisor.Supervisor)