Module: OMQ::Engine::Maintenance

Defined in:
lib/omq/engine/maintenance.rb

Overview

Spawns a periodic maintenance task for the parent mechanism.

The mechanism declares maintenance needs via #maintenance, which returns { interval:, task: } or nil.

Class Method Summary collapse

Class Method Details

.start(parent_task, mechanism) ⇒ Object

Parameters:

  • parent_task (Async::Task)
  • mechanism (#maintenance, nil) 


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# File 'lib/omq/engine/maintenance.rb', line 16

def self.start(parent_task, mechanism)
  return unless mechanism.respond_to?(:maintenance)
  spec = mechanism.maintenance or return spec

  interval = spec[:interval]
  callable = spec[:task]

  parent_task.async(transient: true, annotation: "mechanism maintenance") do
    Async::Loop.quantized(interval: interval) do
      callable.call
    end
  rescue Async::Stop
    # clean shutdown
  end
end