Class: VncTools::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/vnctools/server.rb

Defined Under Namespace

Classes: Error

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(display = nil) ⇒ Server

Returns a new instance of Server.



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# File 'lib/vnctools/server.rb', line 32

def initialize(display = nil)
  @display = display
end

Class Attribute Details

.executable ⇒ Object 



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# File 'lib/vnctools/server.rb', line 21

def executable
  @executable ||= find_executable
end

Instance Attribute Details

#display ⇒ Object (readonly)

Returns the value of attribute display.



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# File 'lib/vnctools/server.rb', line 30

def display
  @display
end

Class Method Details

.all ⇒ Object 



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# File 'lib/vnctools/server.rb', line 15

def all
  displays.map { |display| new ":#{display}" }
end

.displays ⇒ Object 



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# File 'lib/vnctools/server.rb', line 11

def displays
  Dir[File.expand_path("~/.vnc/*.pid")].map { |e| e[/(\d+)\.pid/, 1] }.compact
end

.find_executable ⇒ Object 



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# File 'lib/vnctools/server.rb', line 25

def find_executable
  `which tightvncserver vncserver xtightvncserver`.each_line.map(&:strip).first || 'tightvncserver'
end

Instance Method Details

#alive? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vnctools/server.rb', line 63

def alive?
  pid_path.exist? && Process.kill(0, Integer(pid_path.read))
rescue Errno::ESRCH
  pid_path.delete if pid_path.exist?
  false
end

#dead? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vnctools/server.rb', line 70

def dead?
  !alive?
end

#force_kill ⇒ Object 



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# File 'lib/vnctools/server.rb', line 53

def force_kill
  if pid_path.exist?
    Process.kill(9, Integer(pid_path.read))
    pid_path.delete if pid_path.exist?
  end
rescue Errno::ESRCH
  # already gone
  pid_path.delete if pid_path.exist?
end

#pid_path ⇒ Object 



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# File 'lib/vnctools/server.rb', line 74

def pid_path
  @pid_path ||= Pathname.new(File.expand_path("~/.vnc/#{host}#{display}.pid"))
end

#start ⇒ Object 



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# File 'lib/vnctools/server.rb', line 36

def start
  if display
    server(display, *launch_arguments)
  else
    output = server(*launch_arguments)
    rx = /desktop is #{host}(\S+)/
    @display = output[rx, 1]
    @display or raise Error, "could not find display in #{output.inspect} =~ #{rx.source}"
  end
end

#stop(force = false) ⇒ Object 



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# File 'lib/vnctools/server.rb', line 47

def stop(force = false)
  server "-kill", display.to_s
rescue Error
  force_kill if force
end