带有Selenium WebDriver的DRuby

Question

我使用分布式ruby，这样我就可以将selenium web-driver对象保存在一个脚本中，并在下一个脚本中使用相同的对象。当我运行客户端时，我得到一个错误，指出#。

有没有人尝试过这一点，或者我们如何克服这个问题？

下面是我的脚本

Server.rb

require 'drb/drb'

# The URI for the server to connect to
URI="druby://localhost:8787"

# Allows sharing of variables between component runs
class TestScope
  # class variable
  @@variables = {}

  def save_variable(key, value)
      @@variables.store(key, value)
  end

  def get_variable(key)
    return @@variables[key]
  end

  def get_size
    return @@variables.size
  end 
end

# The object that handles requests on the server
FRONT_OBJECT=TestScope.new

DRb.start_service(URI, FRONT_OBJECT, safe_level: 1, verbose: true)
# Wait for the drb server thread to finish before exiting.
DRb.thread.join

Client1.rb

require 'drb/drb'
require 'selenium-webdriver'

# The URI to connect to
SERVER_URI="druby://localhost:8787"

# Start a local DRbServer to handle callbacks.

# Not necessary for this small example, but will be required
# as soon as we pass a non-marshallable object as an argument
# to a dRuby call.

# Note: this must be called at least once per process to take any effect.
# This is particularly important if your application forks.
DRb.start_service

test_scope = DRbObject.new_with_uri(SERVER_URI)

driver = Selenium::WebDriver::Driver.for :firefox
driver.navigate.to "http://www.google.com"

puts "Saving the driver object to the test scope"
test_scope.save_variable('driver', driver)

Client2.rb

require 'drb/drb'
require 'selenium-webdriver'

# The URI to connect to
SERVER_URI="druby://localhost:8787"

# Start a local DRbServer to handle callbacks.

# Not necessary for this small example, but will be required
# as soon as we pass a non-marshallable object as an argument
# to a dRuby call.

# Note: this must be called at least once per process to take any effect.
# This is particularly important if your application forks.
DRb.start_service

test_scope = DRbObject.new_with_uri(SERVER_URI)

puts "Fetching the driver object from the test scope"
driver1 = test_scope.get_variable('driver')
driver1.navigate.to "http://www.yahoo.com"

Answer 1

为了使用DRb共享对象，必须在dRb服务器中定义该类，因为它允许同一或不同机器上的一个Ruby进程中的对象调用另一个Ruby进程中的对象上的方法。

如果存在需要在dRb客户端上创建对象并在其他DRb客户端中使用该对象的场景。我们需要使用ruby脚本运行器并在scriptrunner.rb中定义对象，以便多个客户端可以使用它。