my_batch_executor.rb

class MyFatalError < StandardError; end
class MyRetryableError < StandardError; end

class MyBatchExecutor
  def initialize(*items)
    @items = items
  end

  def execute
    @items.each.with_index(1) do |item, i|
      retry_count = 0
      begin
        item.call
      rescue MyFatalError => e
        message(i, e)
        return
      rescue MyRetryableError => e
        message(i, e)
        retry_count += 1
        retry_count == 1 ? retry : next
      rescue => e
        message(i, e)
        next
      end
    end
    puts 'Batch complete'
  end

  def message(i, e)
    puts "Item #{i} failed: #{e.class}, #{e.message}"
  end
end