batch_status_paginator.rb

class BatchStatusPaginator
  include Sidekiq::Paginator

  def initialize(page_size=25)
    @page_size = page_size
  end

  # Get all batch statuses
  def all
    current_page, total_size, items = batches(1)

    (1..total_size).map do |page|
      status_page(page)
    end.flatten
  end

  # Get a single page of batch statuses
  def status_page(page)
    current_page, total_size, items = batches(page)
    items.map { |batch| status(batch) }.compact
  end

  private

  def status(batch)
    begin
      Sidekiq::Batch::Status.new(batch.first)
    rescue Sidekiq::Batch::NoSuchBatch
      nil
    end
  end

  def batches(page)
    page("batches", page, @page_size, :reverse => true)
  end
end