Class: ScoutApm::BackgroundWorker

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

Constant Summary collapse

DEFAULT_PERIOD =

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

60

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(period = DEFAULT_PERIOD) ⇒ BackgroundWorker

Returns a new instance of BackgroundWorker.



9
10
11
12
 
# File 'lib/scout_apm/background_worker.rb', line 9

def initialize(period=DEFAULT_PERIOD)
  @period = period
  @keep_running = true
end

Instance Attribute Details

#period ⇒ Object (readonly)

Returns the value of attribute period.



7
8
9
 
# File 'lib/scout_apm/background_worker.rb', line 7

def period
  @period
end

Instance Method Details

#run_once ⇒ Object

Runs the task passed to start once.



19
20
21
 
# File 'lib/scout_apm/background_worker.rb', line 19

def run_once
  @task.call if @task
end

#start(&block) ⇒ Object

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



24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
 
# File 'lib/scout_apm/background_worker.rb', line 24

def start(&block)
  @task = block
  begin
    ScoutApm::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
    ScoutApm::Agent.instance.logger.debug "Background Worker Exception!!!!!!!"
    ScoutApm::Agent.instance.logger.debug $!.message
    ScoutApm::Agent.instance.logger.debug $!.backtrace
  end
end

#stop ⇒ Object 



14
15
16
 
# File 'lib/scout_apm/background_worker.rb', line 14

def stop
  @keep_running = false
end