class Rooibos::Message::Clock

Response from a clock command.

Long-lived applications display the time. Dashboards show “last updated 30 seconds ago.” Schedulers fire actions at specific hours. All of these need wall-clock time. But calling Time.now in Update is a side effect—the same model and message produce different results depending on when you call them.

This response carries the wall-clock time from the runtime. Update pattern-matches on the envelope to distinguish multiple clocks.

Use it to handle Command.clock completions.

Example

case msg
in { type: :clock, envelope: :refresh, time: }
  [model.with(last_refresh: time), Command.clock(1, :refresh)]
in { type: :clock, envelope: :display, time: }
  model.with(current_time: time.utc.to_s)
end