Grid concept in Selenium [closed] - selenium-grid

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I have written coding for browser opening with grid concept. I wrote the following code. I need to know its correct or wrong.
properties
----------
HUB=localhost
PORT=4444
Browser = chrome
Url=http://demo.guru99.com/v4/index.php
Code
----
package processor;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
import org.openqa.selenium.Platform;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.ie.InternetExplorerDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
public class Browser {
public static void main(String[] args) throws FileNotFoundException, IOException {
RemoteWebDriver driver;
Properties prop;
prop = new Properties();
prop.load(new FileInputStream("./config.properties"));
String hub = prop.getProperty("HUB");
String port = prop.getProperty("PORT");
String browser = prop.getProperty("Browser");
String url = prop.getProperty("Url");
if (browser.equalsIgnoreCase("chrome") || browser.equalsIgnoreCase("ie")
|| browser.equalsIgnoreCase("firefox")) {
if (browser.equalsIgnoreCase("chrome")) {
try {
DesiredCapabilities dc;
dc = new DesiredCapabilities();
dc.setBrowserName(browser);
dc.setPlatform(Platform.WINDOWS);
System.setProperty("webdriver.chrome.driver", "./drivers/chromedriver.exe");
driver = new ChromeDriver();
System.out.println("Chrome Browser is Initialising..........");
driver.manage().window().maximize();
driver.get(url);
} catch (Exception e) {
System.out.println("Problem Occurred while Initialising Chrome Browser. Check for the Driver Name & Path !!!!!!!!!!");
}
}
if (browser.equalsIgnoreCase("ie")) {
try {
DesiredCapabilities dc;
dc = new DesiredCapabilities();
dc.setBrowserName(browser);
dc.setPlatform(Platform.WINDOWS);
System.setProperty("webdriver.ie.driver", "./Drivers/IEDriverServer.exe");
driver = new InternetExplorerDriver();
System.out.println("Internet Explorer is Initialising..........");
driver.manage().window().maximize();
driver.get(url);
} catch (Exception e) {
System.out.println("Problem Occurred while Initialising Internet Explorer. Check for the Driver Name & Path !!!!!!!!!!");
}
}
if (browser.equalsIgnoreCase("firefox")) {
try {
DesiredCapabilities dc;
dc = new DesiredCapabilities();
dc.setBrowserName(browser);
dc.setPlatform(Platform.WINDOWS);
driver = new FirefoxDriver();
System.out.println("Firefox is Initialising..........");
driver.manage().window().maximize();
driver.get(url);
} catch (Exception e) {
System.out.println("Problem Occurred while Initialising Firefox. Check for the Driver Name & Path !!!!!!!!!!");
}
}
}
else {
System.out.println("Invalid Browser. Check Browser Name in Properties File.......... ");
}
}
}
Kindly see the code and tell me the correct code. Grid Concept i need to apply.

Answer 1

To use selenium with the grid you need to start a Remote webdriver. What you're doing here is starting a local webdriver of types:
driver = new ChromeDriver();
driver = new InternetExplorerDriver();
driver = new FirefoxDriver();
This is not how you request a browser from the grid.
Furthermore, the path to the driver (System.setProperty("webdriver.chrome.driver", "./drivers/chromedriver.exe");) must be supplied to the grid, so you cannot set this in your code here.
You do this as follows:
java -jar selenium-server-standalone-2.53.0.jar -role hub -Dwebdrivers.chrome.driver=chromedriver.exe
What you are currently doing is creating local webdrivers, you are not connecting to the grid at all. Connecting to the grid is done as follows:
driver = new RemoteWebDriver(hub, dc);