Class: CrocodileProcess

Inherits:
Object
  • Object
show all
Defined in:
lib/crocodile/crocodile_process.rb

Instance Method Summary collapse

Constructor Details

#initialize(job_name, pids_dir) ⇒ CrocodileProcess 



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# File 'lib/crocodile/crocodile_process.rb', line 4

def initialize(job_name, pids_dir)
  @name = job_name
  @job_path = File.expand_path("jobs/#{job_name}")
  @pid_path = File.expand_path("#{job_name}.pid", pids_dir)
end

Instance Method Details

#clean ⇒ Object 



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# File 'lib/crocodile/crocodile_process.rb', line 54

def clean
  if File.exists?(@pid_path)
    File.delete(@pid_path)
  end
end

#constantize(name) ⇒ Object 



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# File 'lib/crocodile/crocodile_process.rb', line 60

def constantize(name)
  Kernel.const_get(name.split("_").push("job").map(&:capitalize).join)
end

#daemonize! ⇒ Object 



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# File 'lib/crocodile/crocodile_process.rb', line 49

def daemonize!
  Process.daemon(true)
  File.open(@pid_path, File::RDWR|File::EXCL|File::CREAT, 0600) { |io| io.write(Process.pid) }
end

#schedule(launch_immediately = false) ⇒ Object 



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# File 'lib/crocodile/crocodile_process.rb', line 14

def schedule(launch_immediately=false)
  require @job_path
  job_class = constantize(@name)

  Signal.trap("INT")  { EventMachine.stop }
  Signal.trap("TERM") { EventMachine.stop }

  EventMachine.run do
    EventMachine.next_tick do
      job_class.logger.info job_class.message
      job_class.run
      EventMachine.stop if job_class.one_run_only
    end if launch_immediately

    timer = EventMachine::PeriodicTimer.new(job_class.interval || 60) do
      job_class.logger.info job_class.message
      job_class.run
      if job_class.one_run_only
        timer.cancel
        EventMachine.stop
      end
    end
  end
end

#start ⇒ Object 



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# File 'lib/crocodile/crocodile_process.rb', line 10

def start
  schedule(launch_immediately=true)
end

#stop ⇒ Object 



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# File 'lib/crocodile/crocodile_process.rb', line 39

def stop
  if File.exists?(@pid_path)
    Process.kill :TERM, File.open(@pid_path).read.strip.to_i
    File.delete(@pid_path)
    true
  else
    false
  end
end