Setting capabilities for remote selenium grid. Named nodes.

[Ivan Danci]

I'm trying to spawn a lot of driver simultaneously, but I want my tasks to have priority. I don't want to write prioritizer for selenium, I have my own scheduler which tells to selenium when to launch a specific task.

For prioritizing I think I might use named nodes. For example "important firefox on linux", "not important chrome on windows" etc. I tried to specify names for nodes, but when I add {:name => "important firefox on linux"} selenium starts default firefox browser on an idle node.

How can I call a specific node?

What am I doing wrong?

My class that manages selenium:

  def remote_driver
    @browser = Watir::Browser.new(:remote,
      :url                  => "http:://.....:4444/wd/hub",

      :http_client          => client,
      :desired_capabilities => capabilities
    )
  end

  def capabilities
    Selenium::WebDriver::Remote::Capabilities.send(
      @driver_name,
      :javascript_enabled    => true,
      :css_selectors_enabled => true,
      :takes_screenshot      => true
    )
  end

  def client
    client = Selenium::WebDriver::Remote::Http::Default.new
    client.timeout = 360
    client
  end

Configs:

hubConfig.json.erb

{
  "host": null,
  "port": <%= node[:selenium][:server][:port] %>,
  "newSessionWaitTimeout": -1,
  "servlets" : [],
  "prioritizer": null,
  "capabilityMatcher": "org.openqa.grid.internal.utils.DefaultCapabilityMatcher",
  "throwOnCapabilityNotPresent": true,
  "nodePolling": <%= node[:selenium][:server][:node_polling] %>,
  "cleanUpCycle": <%= node[:selenium][:server][:cleanup_cycle] %>,
  "timeout": <%= node[:selenium][:server][:timeout] %>,
  "browserTimeout": 0,
  "maxSession": <%= node[:selenium][:server][:max_session] %>
}

{
  "capabilities": [
    {
      "browserName": "firefox",
      "maxInstances": 5,
      "seleniumProtocol": "WebDriver"
    }, {
      "browserName": "chrome",
      "maxInstances": 5,
      "seleniumProtocol": "WebDriver"
    }, {
      "browserName": "phantomjs",
      "maxInstances": 5,
      "seleniumProtocol": "WebDriver"
    }
  ],
  "configuration": {
    "proxy": "org.openqa.grid.selenium.proxy.DefaultRemoteProxy",
    "maxSession": <%= node[:selenium][:node][:max_session] %>,
    "port": <%= node[:selenium][:node][:port] %>,
    "host": "<%= node[:fqdn] %>",
    "register": true,
    "registerCycle": <%= node[:selenium][:node][:register_cycle] %>,
    "hubPort": <%= node[:selenium][:server][:port] %>
  }
}

[Krishnan Mahadevan]

Ivan,

In order for you to be able to target a specific node, have you tried adding either version (or) applicationName to your node configuration json file and see if that works ?

something like this :

{
      "browserName": "firefox",
      "maxInstances": 5,

      "applicationName" : "MyApp",
      "version": "FF important",
      "seleniumProtocol": "WebDriver"
    },

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

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