SoftTimeout

gem 'soft_timeout'

class MyClass
  def initialize
    @continue_running = true
  end

  def some_important_task
    # Soft timeout at 10 sec. and Raise Timeout::Error after 20 sec
    timeout = SoftTimeout::Timeout.new(10, 20) do
      #This block will be executed after soft expiry time is reached(10 secs here)  
      @continue_running = false
    end

    # Keep checkig if flag is still set to true and then process the chunk. else exit gracefully
    # It will raise Timeout::Error if following block runs for more than hard expiry time(20 secs)
    timeout.soft_timeout do
      10.times do |n|
        # After soft expiry seconds, the (above)block will be executed and the flag will be set to false.
        if @continue_running
          ...
          some heavy but critical processing which should not be interrupted in between
          ...
        else
          puts 'soft timeout reached'
          ..Finish work, release locks etc...
          return
        end
        
      end
    end
end