com.paypal.selion.grid.servlets

Class GridStatistics

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.openqa.grid.web.servlet.RegistryBasedServlet

com.paypal.selion.grid.servlets.GridStatistics

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class GridStatistics
extends org.openqa.grid.web.servlet.RegistryBasedServlet

GridStatistics servlet displays the current load on the Grid per browser, i.e., the number of requests waiting on the queue for a browser and the maximum instances of that browser. The servlet responds only to client using accept header for all media types and accept header of type application/json. This servlet should be injected into the Grid. This servlet requires the remote proxies to update the BrowserInformationCache upon initialization. Any SeLionRemoteProxy performs this required update.

 cURL clients
 
 Sample requests
 curl -s http://:/grid/admin/GridStatistics
 curl -s -X GET http://:/grid/admin/GridStatistics
 curl -s -H "Accept: application/json" -X GET http://:/grid/admin/GridStatistics
 
 Browser clients
 
 Go to the URL http://:/grid/admin/GridStatistics
 
 Sample response
 [{
     "browserName": "chrome",
     "statistics": {
         "waitingRequests": 2,
         "maxBrowserInstances": 10
     }
 },
 {
     "browserName": "firefox",
     "statistics": {
         "waitingRequests": 3,
         "maxBrowserInstances": 15
     }
 },
 {
     "browserName": "internet explorer",
     "statistics": {
         "waitingRequests": 0,
         "maxBrowserInstances": 1
     }
 }]
 

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
GridStatistics()
GridStatistics(org.openqa.grid.internal.Registry registry)

Method Summary

Modifier and Type	Method and Description
protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
protected void	doPost(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
protected void	process(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) This method gets a list of BrowserStatisticsCollection.BrowserStatistics and returns over HTTP as a json document

Methods inherited from class org.openqa.grid.web.servlet.RegistryBasedServlet

getRegistry

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GridStatistics

public GridStatistics()

GridStatistics

public GridStatistics(org.openqa.grid.internal.Registry registry)

Method Detail

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
                     javax.servlet.http.HttpServletResponse response)
              throws javax.servlet.ServletException,
                     IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

doPost

protected void doPost(javax.servlet.http.HttpServletRequest req,
                      javax.servlet.http.HttpServletResponse resp)
               throws javax.servlet.ServletException,
                      IOException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

process

protected void process(javax.servlet.http.HttpServletRequest request,
                       javax.servlet.http.HttpServletResponse response)
                throws IOException

This method gets a list of BrowserStatisticsCollection.BrowserStatistics and returns over HTTP as a json document

Parameters:

request - HttpServletRequest that represents the servlet request

response - HttpServletResponse that represents the servlet response

Throws:

IOException