Custom Proxy and Servlet for Selenium not working

[olanrewaju ısaac Elisha]

Hello,

I have overridden  DefaultRemoteProxy to provide custom Proxy Functionality.

public class MyRemoteProxy extends DefaultRemoteProxy{

 

    public MyRemoteProxy(RegistrationRequest request, Registry registry) throws IOException {

    super(request, registry);

    preInit(); // purpose to send a request to the custom Servlet injected on the Node. 

    }

    

private  void preInit(){

 

           HttpClient client = new DefaultHttpClient();

           StringBuilder url = new StringBuilder();

           url.append("http://");

           url.append(getRemoteHost().getHost());

           url.append(":").append(getRemoteHost().getPort());

           url.append("/extra/");

           url.append(CloseAllBrowserServlet.class.getSimpleName());

           HttpPost post = new HttpPost(url.toString());

           try {

               client.execute(post);

           } catch (ClientProtocolException e) {

              // log.log(Level.SEVERE, e.getMessage(), e);

           } catch (IOException e) {

              // log.log(Level.SEVERE, e.getMessage(), e);

           }

          

  }

}

the object here is to send a post request to the injected Servlet on the node.

I use this Ant file to start the Node and passed both Proxy and Servlet as Argument parameter.

<java jar="${selenium.jar}" fork="yes" spawn="no" maxmemory="768m" failonerror="true">

<classpath>

<pathelement location="${selenium.jar}" />

<pathelement location="${jar.myproxy}" /> <!--jar containing Custom Proxy and Servlet -->

</classpath>

<arg line="-role node" />

<arg line="-port ${selenium.gridNode.nodePort}" />

<arg line="-hub http://${selenium.gridNode.hubHost}:${selenium.gridNode.hubPort}/grid/register"/>

<arg line="-servlets com.selenium.automation.test.CloseAllBrowserServlet" /> <!-Custom Servlet ->

<arg line="-proxy com.selenium.automation.test.MyRemoteProxy" /> <!-- Custom Proxy --> 

</java>

I have similar Ant file on the Hub and I supplied the Custom Proxy as argument to it.

The problem is, when i start the Node using this Ant script, i get error message: 

"Could not register the Node to the Hub"

Could anyone Show what i did wrong ? i followed the doc available on the Selenium website.

The custom Jar file was on the Class path of both Hub and Node.

Please help.

Thanks

[Krishnan Mahadevan]

Your grid console should tell you what exception was raised when the registration request failed. Did u take a look at it ?

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[olanrewaju ısaac Elisha]

the error message didn't include a particular a name Exception, otherwise i would have looked it up.

the message on the screen  is:  " couldn't register this node. Error sending the registration request..  

please see attached file for the screen shot.

Thanks.

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[Krishnan Mahadevan]

I was asking about the hub console and not the node console. What does the terminal from where you started the hub say ?

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[olanrewaju ısaac Elisha]

Thanks very much, i just pulled the log from the Hub and i notice a ClassNotFoundException, the Hub could not find the Custome Proxy.

Attached here it the is the error log.

Sincerely.

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[Krishnan Mahadevan]

So am guessing you now know what to do don't you ?

If not then here's what you should be doing.

1. Copy the jar that has your proxy into the directory where your standalone selenium jar resides and then use java -cp to spawn the hub. (Or)
2. Build an uber jar that contains both the selenium jar and your proxy class and then use it to spawn the hub and the node.

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[olanrewaju ısaac Elisha]

Thank you very much Krishnan, your step by step guidance is out this world, thanks for your kindness.

1) I performed the first step you listed above. my Custom Jar file is placed at the same directory where Selenium Jar is               located, and i provide the custom jar in Selenium classpath.

       The problem is that, i couldn't  use java -cp to spawn the Hub because  the existing setup uses ANT file.

        I  attached the Ant file and directory structure here.

2) I probably will resort to the second solution - "uber jar", i don't know how to create one yet but i will quickly look it up.

Thanks a lot for being this helpful.

Sincerely.

 

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