Module: Sinatra::ScheduleHelper

Defined in:
lib/sinatra/helpers/schedule.rb

Constant Summary collapse

@@scheduler = 
Rufus::Scheduler.new

Instance Method Summary collapse

Instance Method Details

#check_file_locked?(specific_lock_file = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sinatra/helpers/schedule.rb', line 8

def check_file_locked?(specific_lock_file=nil)
  return false if specific_lock_file.nil?
  f = File.open("/tmp/#{specific_lock_file}", File::CREAT)
  Timeout::timeout(0.001) { f.flock(File::LOCK_EX) }
  f.flock(File::LOCK_UN)
  false
rescue 
  true
ensure
  unless f.nil?
    f.close
  end
end

#schedule_at(cron_expression, specific_lock_file = nil) ⇒ Object 



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# File 'lib/sinatra/helpers/schedule.rb', line 55

def schedule_at(cron_expression,specific_lock_file=nil) 
  @@scheduler.cron cron_expression do

    unless check_file_locked?(specific_lock_file)
      begin
        file_path = specific_lock_file.nil?? "/tmp/schedule.lock" : "/tmp/#{specific_lock_file}";
        f = File.open(file_path, "w+")
        # if file was previosly locked then flock throw a exception
        f.flock(File::LOCK_EX)
        ten_minutes = 600
        # if the process overcome ten minutes, the timeout api throw a exception
        Timeout::timeout(ten_minutes) do 

          begin
            yield
          rescue error
            title = error.message.split(':')[0].gsub('#<','');
            message = error.backtrace.join(',');
            NotificationSender.instance.send_error(nil,title,message)
          end

        end
      ensure
        unless f.nil?
          f.flock(File::LOCK_UN)
          f.close
        end
      end
    end

  end
end

#schedule_every(time, specific_lock_file = nil) ⇒ Object 



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# File 'lib/sinatra/helpers/schedule.rb', line 22

def schedule_every(time,specific_lock_file=nil) 
  @@scheduler.every time do

    unless check_file_locked?(specific_lock_file)
      begin
        file_path = specific_lock_file.nil?? "/tmp/schedule.lock" : "/tmp/#{specific_lock_file}";
        f = File.open(file_path, "w+")
        # if file was previosly locked then flock throw a exception
        f.flock(File::LOCK_EX)
        ten_minutes = 600
        # if the process overcome ten minutes, the timeout api throw a exception
        Timeout::timeout(ten_minutes) do 

          begin
            yield
          rescue StandardError => error
            title = error.message.split(':')[0].gsub('#<','');
            message = error.backtrace.join(',');
            NotificationSender.instance.send_error(nil,title,message)
          end

        end
      ensure
        unless f.nil?
          f.flock(File::LOCK_UN)
          f.close
        end
      end
    end

  end
end