Module: Daemon::Controller

Defined in:
lib/inari/daemon.rb

Class Method Summary collapse

Class Method Details

.daemonize(daemon) ⇒ Object 



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# File 'lib/inari/daemon.rb', line 32

def self.daemonize(daemon)
  case !ARGV.empty? && ARGV[0]
  when 'start'
    start(daemon)
  when 'stop'
    puts 'Cleaning up all processes.'
    stop(daemon)
    puts 'Stopped.'
    exit
  when 'restart'
    stop(daemon)
    start(daemon)
  else
    puts 'Invalid command. Please specify start, stop or restart.'
    exit
  end
end

.remove_pid_file(daemon) ⇒ Object 



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# File 'lib/inari/daemon.rb', line 85

def self.remove_pid_file(daemon)
  FileUtils.rm(daemon.pid_file_name)
end

.start(daemon) ⇒ Object

Create a process for this task.



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# File 'lib/inari/daemon.rb', line 51

def self.start(daemon)
  fork do
    # Become session leader
    Process.setsid
    # Zap session leader
    exit if fork
    # Store the pid
    PidFile.store(daemon, Process.pid)
    # Change directory
    Dir.chdir Dir.tmpdir
    
    redirect_logs if ARGV.empty? and ARGV[1] != 'debug'
    
    trap('TERM') {daemon.stop; exit}
    daemon.start
  end
end

.stop(daemon) ⇒ Object

Stop all tasks.



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# File 'lib/inari/daemon.rb', line 70

def self.stop(daemon)
  puts 'Stopping all tasks...'
  
  if !File.file?(daemon.pid_file_name)
    puts "Pid file not found (#{daemon.pid_file_name}). Is the daemon running?"
    exit
  end
  (PidFile.recall(daemon) or []).each do |pid|
    pid && Process.kill('TERM', pid) rescue Errno::ESRCH
  end
  remove_pid_file(daemon)
  
  puts 'Tasks stopped.'
end