the function ingoing_inspection_nsw is long running. This is being called from the view and the pdf being returned as application/pdf

gistfile1.txt

def retryable(options = {})
    opts = { :tries => 1, :on => Exception }.merge(options)

    retry_exception, retries = opts[:on], opts[:tries]

    begin
      return yield
    rescue retry_exception
      if (retries -= 1) > 0
        sleep 2
        retry 
      else
        raise
      end
    end
  end
  
  def create_report
    if @inspection.type == 'RoutineInspection'
          puts "---CR> CREATING ROUTINE INSPECTION REPORT"
          pdf = routine_inspection_generic
    else                          
          puts "---CR> CREATING INGOING INSPECTION REPORT"

          thread = Thread.new  do
              pdf = ingoing_inspection_nsw
          end
          retryable(:tries => 10, :on => ActionView::Template::Error) do
              thread.join
          end
    end
    pdf
  end