[Question] How can I check how many nodes are registered to my Jenkins Selenium Hub?

[alinpa]

Hello Guys and Girls,

Do you have any idea how can I verify programmatically how many nodes are registered to my selenium hub?

How can I have access to the jenkins selenium plugin instance?

Thank you!

[alinpa]

Hello,

If someone are interested to know how you can do it, please check the following method:

import groovy.json.JsonSlurper
def waitSeleniumNodes(int expectedNumberOfSeleniumNodes) {
int count = 600
def seleniumGridInfo = ["curl", "-k", "-X", "GET", "-H", "Content-Type: application/json", "http://your-jenkins-link:4444/grid/api/hub"].execute().text
int actualNumberOfSeleniumNodes = 0

while(!(actualNumberOfSeleniumNodes == expectedNumberOfSeleniumNodes) && (count >=0)) {
	sleep(2)
	def seleniumGridInfoJson = new JsonSlurper().parseText(["curl", "-k", "-X", "GET", "-H", "Content-Type: application/json", "http://your-jenkins-link:4444/grid/api/hub"].execute().text)
	actualNumberOfSeleniumNodes = (seleniumGridInfoJson.slotCounts.total as Integer)/5
	println('Selenium nodes already registered are ' + actualNumberOfSeleniumNodes + ' and should be '+ expectedNumberOfSeleniumNodes)
            println('Remaining ' + count*2 + ' seconds!')
            count--
}

 if (count == -1) {
            println('Not all selenium nodes are registered to master! Number of selenium nodes registered are ' + actualNumberOfSeleniumNodes +'and should be ' + expectedNumberOfSeleniumNodes)
            currentBuild.result = 'FAILURE'
    }

}

The previous method checks for a while if a number of nodes are registered to the selenium grid.
The previous method was written on groovy.