Class: Chef::Application::WindowsService

Inherits:
Win32::Daemon
  • Object
show all
Includes:
Mixlib::CLI
Defined in:
lib/chef/application/windows_service.rb

Instance Method Summary collapse

Instance Method Details

#service_init ⇒ Object 



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# File 'lib/chef/application/windows_service.rb', line 60

def service_init
  @service_action_mutex = Mutex.new
  @service_signal = ConditionVariable.new

  reconfigure
  Chef::Log.info("Chef Client Service initialized")
end

#service_main(*startup_parameters) ⇒ Object 



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# File 'lib/chef/application/windows_service.rb', line 68

def service_main(*startup_parameters)
  # Chef::Config is initialized during service_init
  # Set the initial timeout to splay sleep time
  timeout = rand Chef::Config[:splay]

  while running? do
    # Grab the service_action_mutex to make a chef-client run
    @service_action_mutex.synchronize do
      begin
        Chef::Log.info("Next chef-client run will happen in #{timeout} seconds")
        @service_signal.wait(@service_action_mutex, timeout)

        # Continue only if service is RUNNING
        next if state != RUNNING

        # Reconfigure each time through to pick up any changes in the client file
        Chef::Log.info("Reconfiguring with startup parameters")
        reconfigure(startup_parameters)
        timeout = Chef::Config[:interval]

        # Honor splay sleep config
        timeout += rand Chef::Config[:splay]

        # run chef-client only if service is in RUNNING state
        next if state != RUNNING

        Chef::Log.info("Chef-Client service is starting a chef-client run...")
        run_chef_client
      rescue SystemExit => e
        # Do not raise any of the errors here in order to
        # prevent service crash
        Chef::Log.error("#{e.class}: #{e}")
      rescue Exception => e
        Chef::Log.error("#{e.class}: #{e}")
      end
    end
  end

  Chef::Log.debug("Exiting service...")
end

#service_pause ⇒ Object 



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# File 'lib/chef/application/windows_service.rb', line 125

def service_pause
  Chef::Log.info("PAUSE request from operating system.")

  # We don't need to wake up the service_main if it's waiting
  # since this is a PAUSE signal.

  if @service_action_mutex.locked?
    Chef::Log.info("Currently a chef-client run is happening.")
    Chef::Log.info("Service will pause once it's completed.")
  else
    Chef::Log.info("Service is pausing....")
  end
end

#service_resume ⇒ Object 



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# File 'lib/chef/application/windows_service.rb', line 139

def service_resume
  # We don't need to wake up the service_main if it's waiting
  # since this is a RESUME signal.

  Chef::Log.info("RESUME signal received from the OS.")
  Chef::Log.info("Service is resuming....")
end

#service_shutdown ⇒ Object 



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# File 'lib/chef/application/windows_service.rb', line 147

def service_shutdown
  Chef::Log.info("SHUTDOWN signal received from the OS.")

  # Treat shutdown similar to stop.

  service_stop
end

#service_stop ⇒ Object

Control Signal Callback Methods



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# File 'lib/chef/application/windows_service.rb', line 113

def service_stop
  Chef::Log.info("STOP request from operating system.")
  if @service_action_mutex.try_lock
    @service_signal.signal
    @service_action_mutex.unlock
    Chef::Log.info("Service is stopping....")
  else
    Chef::Log.info("Currently a chef-client run is happening.")
    Chef::Log.info("Service will stop once it's completed.")
  end
end