require 'sidekiq/api'
require 'roo_on_rails/sidekiq/queue_latency'
require 'roo_on_rails/sidekiq/process_scaling'

module RooOnRails
  module Sidekiq
    # Returns stats on the current SLA performance of queues in a Sidekiq instance.
    #
    # Assumes workers are not bound to queues.
    class SlaMetric
      def self.queue
        queues = ::Sidekiq::Queue.all.map { |q| QueueLatency.new(q) }
        global_stats = ProcessScaling.new(queues)
        global_stats.requested_processes
      end
    end
  end
end