Class: BigBrother::Ticker

Inherits:
Object
  • Object
show all
Defined in:
lib/big_brother/ticker.rb

Class Method Summary collapse

Class Method Details

.pause(&block) ⇒ Object 



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# File 'lib/big_brother/ticker.rb', line 4

def self.pause(&block)
  EM.cancel_timer(@timer)

  while @outstanding_ticks > 0
    EM::Synchrony.sleep(0.1)
  end

  block.call
  schedule!
end

.schedule! ⇒ Object 



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# File 'lib/big_brother/ticker.rb', line 15

def self.schedule!
  @outstanding_ticks = 0
  @timer = EM::Synchrony.add_periodic_timer(0.1, &method(:tick))
end

.tick ⇒ Object 



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# File 'lib/big_brother/ticker.rb', line 20

def self.tick
  @outstanding_ticks += 1
  BigBrother.clusters.ready_for_check.each do |cluster|
    BigBrother.logger.debug("Monitoring cluster #{cluster.name}")
    cluster.monitor_nodes
  end
  @outstanding_ticks -= 1
end