Class: ScoutRails::BackgroundWorker

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_rails/background_worker.rb

Overview

Used to run a given task every 60 seconds.

Constant Summary collapse

PERIOD =

in seconds, time between when the worker thread wakes up and runs.

60

Instance Method Summary collapse

Constructor Details

#initialize ⇒ BackgroundWorker

Returns a new instance of BackgroundWorker.



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# File 'lib/scout_rails/background_worker.rb', line 6

def initialize
  @keep_running = true
end

Instance Method Details

#run_once ⇒ Object

Runs the task passed to start once.



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# File 'lib/scout_rails/background_worker.rb', line 15

def run_once
  @task.call if @task
end

#start(&block) ⇒ Object

Starts running the passed block every 60 seconds (starting now).



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# File 'lib/scout_rails/background_worker.rb', line 20

def start(&block)
  @task = block
  begin
    ScoutRails::Agent.instance.logger.debug "Starting Background Worker, running every #{PERIOD} seconds"
    next_time = Time.now
    while @keep_running do
      now = Time.now
      while now < next_time
        sleep_time = next_time - now
        sleep(sleep_time) if sleep_time > 0
        now = Time.now
      end
      @task.call
      while next_time <= now
        next_time += PERIOD
      end
    end
  rescue
    ScoutRails::Agent.instance.logger.debug "Background Worker Exception!!!!!!!"
    ScoutRails::Agent.instance.logger.debug $!.message
    ScoutRails::Agent.instance.logger.debug $!.backtrace
  end
end

#stop ⇒ Object 



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# File 'lib/scout_rails/background_worker.rb', line 10

def stop
  @keep_running = false
end