Class: Capybara::Poltergeist::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/capybara/poltergeist/client.rb

Constant Summary collapse

PHANTOMJS_SCRIPT = 
File.expand_path('../client/compiled/main.js', __FILE__)
PHANTOMJS_VERSION = 
'1.8.1'
PHANTOMJS_NAME = 
'phantomjs'
KILL_TIMEOUT =

seconds

2

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(server, options = {}) ⇒ Client

Returns a new instance of Client.



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# File 'lib/capybara/poltergeist/client.rb', line 19

def initialize(server, options = {})
  @server            = server
  @path              = options[:path]              || PHANTOMJS_NAME
  @window_size       = options[:window_size]       || [1024, 768]
  @phantomjs_options = options[:phantomjs_options] || []
  @phantomjs_logger  = options[:phantomjs_logger]  || $stdout

  pid = Process.pid
  at_exit { stop if Process.pid == pid }
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/capybara/poltergeist/client.rb', line 17

def path
  @path
end

#phantomjs_options ⇒ Object (readonly)

Returns the value of attribute phantomjs_options.



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# File 'lib/capybara/poltergeist/client.rb', line 17

def phantomjs_options
  @phantomjs_options
end

#pid ⇒ Object (readonly)

Returns the value of attribute pid.



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# File 'lib/capybara/poltergeist/client.rb', line 17

def pid
  @pid
end

#server ⇒ Object (readonly)

Returns the value of attribute server.



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# File 'lib/capybara/poltergeist/client.rb', line 17

def server
  @server
end

#window_size ⇒ Object (readonly)

Returns the value of attribute window_size.



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# File 'lib/capybara/poltergeist/client.rb', line 17

def window_size
  @window_size
end

Class Method Details

.start(*args) ⇒ Object 



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# File 'lib/capybara/poltergeist/client.rb', line 11

def self.start(*args)
  client = new(*args)
  client.start
  client
end

Instance Method Details

#command ⇒ Object 



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# File 'lib/capybara/poltergeist/client.rb', line 69

def command
  parts = [path]
  parts.concat phantomjs_options
  parts << PHANTOMJS_SCRIPT
  parts << server.port
  parts.concat window_size
  parts
end

#restart ⇒ Object 



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# File 'lib/capybara/poltergeist/client.rb', line 64

def restart
  stop
  start
end

#start ⇒ Object 



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# File 'lib/capybara/poltergeist/client.rb', line 30

def start
  check_phantomjs_version
  read, write = IO.pipe
  @out_thread = Thread.new {
    while !read.eof? && data = read.readpartial(1024)
      @phantomjs_logger.write(data)
    end
  }

  redirect_stdout(write) do
    @pid = Process.spawn(*command.map(&:to_s))
  end
end

#stop ⇒ Object 



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# File 'lib/capybara/poltergeist/client.rb', line 44

def stop
  if pid
    begin
      Process.kill('TERM', pid)

      begin
        Timeout.timeout(KILL_TIMEOUT) { Process.wait(pid) }
      rescue Timeout::Error
        Process.kill('KILL', pid)
        Process.wait(pid)
      end
    rescue Errno::ESRCH, Errno::ECHILD
      # Zed's dead, baby
    end

    @out_thread.kill
    @pid = nil
  end
end