Module: Wakame::StatusDB

Defined in:
lib/wakame/status_db.rb

Defined Under Namespace

Classes: Model, SequelAdapter, WorkerThread

Class Method Summary collapse

Class Method Details

.adapter ⇒ Object 



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# File 'lib/wakame/status_db.rb', line 98

def self.adapter
  @adapter ||= SequelAdapter.new
end

.barrier(tout = 60*2, &blk) ⇒ Object 



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# File 'lib/wakame/status_db.rb', line 16

def self.barrier(tout=60*2, &blk)
  abort "Cant use barrier() in side of the EventMachine thread." if Kernel.const_defined?(:EventMachine) && ::EventMachine.reactor_thread?

  if Thread.current == WorkerThread.worker_thread
    return blk.call
  end
  
  Wakame.log.debug("StatusDB.barrier: Called at #{caller(1)[0..1].inspect} on the thread #{Thread.current}.")

  q = ::Queue.new
  time_start = ::Time.now
  
  self.pass {
    begin
      res = blk.call
      q << [true, res]
    rescue => e
      q << [false, e]
    end
  }

  res = nil
  begin
    timeout(tout) do
      res = q.shift
    end
  rescue Timeout::Error => e
    Wakame.log.error("WorkerThread.queue.size=#{WorkerThread.queue.size}")
    Wakame.log.error(e)
    raise e
  end

  time_elapsed = ::Time.now - time_start
  Wakame.log.debug("#{self}.barrier: Elapsed time for #{blk}: #{time_elapsed} sec") if time_elapsed > 0.05

  if res[0] == false && res[1].is_a?(Exception)
    raise res[1]
  end
  res[1]
end

.pass(&blk) ⇒ Object 



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# File 'lib/wakame/status_db.rb', line 8

def self.pass(&blk)
  if Thread.current == WorkerThread.worker_thread
    blk.call
  else
    WorkerThread.queue.enq(blk)
  end
end