I have developed a Java app that will automatically download a file from a certain website. It is working fine if you will run it manually in cmd on my local machine and on the server. However, when I tried to run the Java app using Task Scheduler set to run every day in Windows Server 2016 I get a bunch of errors in Web Driver. The task scheduler sometimes works on random days and sometimes it doesn't and it throws any of these errors.
org.openqa.selenium.TimeoutException: java.util.concurrent.TimeoutException
org.openqa.selenium.SessionNotCreatedException: Could not start a new session. Response code 500. Message: chrome not reachable
org.openqa.selenium.TimeoutException: Expected condition failed: waiting for element to be clickable: By.id: i0116 (tried for 600 second(s) with 500 milliseconds interval)
org.openqa.selenium.remote.UnreachableBrowserException: Error communicating with the remote browser. It may have died.
org.openqa.selenium.SessionNotCreatedException: Could not start a new session. Possible causes are invalid address of the remote server or browser start-up failure.
org.openqa.selenium.SessionNotCreatedException: Could not start a new session. Response code 500. Message: unknown error: DevToolsActivePort file doesn't exist
Java version of my workstation and Windows server
openjdk version "11.0.13" 2021-10-19 LTS OpenJDK Runtime Environment Corretto-11.0.13.8.1 (build 11.0.13+8-LTS) OpenJDK 64-Bit Server VM Corretto-11.0.13.8.1 (build 11.0.13+8-LTS, mixed mode)
Edge browser version of my workstation and Windows server
Version 97.0.1072.55 (Official build) (64-bit)
Webdriver version of my workstation and Windows server
Version 97.0.1072.55
Task Scheduler configurations:
- Run whether user is logged on or not
- Run with highest privileges
- Wake the computer to run this task
- Allow task to be run on demand
- Run task as soon as possible after a scheduled start is missed
POM.XML
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.sample</groupId>
<artifactId>sample</artifactId>
<version>1</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<executions>
<!-- Run shade goal on package phase -->
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>Main.ReportsViewMain</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-devtools-v96</artifactId>
<version>4.1.1</version>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>4.1.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>7.4.0</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
Getting the driver Java Class
package MyWebDriver;
import Entity.FilePaths;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.edge.EdgeDriver;
import org.openqa.selenium.edge.EdgeOptions;
import java.io.PrintWriter;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.Map;
public class GetDriver {
public WebDriver getDriver(
WebDriver browser,
FilePaths filePaths,
boolean isHeadlessDriver,
String downloadPath,
String expectedUrl, PrintWriter out, String dateTimeFormat){
while (browser == null){
int webdriverRetry = 10;
int count = 0;
if (count < webdriverRetry){
try {
// Setting the driver executable
System.setProperty("webdriver.edge.driver", filePaths.getWebDriverPath());
// Start the web browser session
EdgeOptions op = new EdgeOptions();
op.addArguments("--no-sandbox"); // Bypass OS security model, must be the very first option to run
op.addArguments("inprivate"); // Open in private mode
op.addArguments("disable-infobars"); // disabling infobars
op.addArguments("--disable-extensions"); // disabling extensions
op.addArguments("--disable-gpu"); // applicable to windows os only
op.addArguments("--disable-dev-shm-usage"); // overcome limited resource problems
if (isHeadlessDriver) {
op.addArguments("--headless"); // run the selenium without GUI, downloading will not work
// Workaround to download a file while in headless mode
Map<String, Object> prefs = new HashMap<>();
prefs.put("download.default_directory", downloadPath);
op.setExperimentalOption("prefs", prefs);
}
else {
op.addArguments("start-maximized"); // open Browser in maximized mode}
}
browser = new EdgeDriver(op);
browser.get(expectedUrl);
if (browser != null) {
out.println(DateTimeFormatter.ofPattern(dateTimeFormat)
.format(LocalDateTime.now())
+ " INFO: Web driver successfully initialized");
System.out.println("INFO: Web driver successfully initialized");
break;
}
else {
throw new Exception("Failed to load web driver (GET-DRIVER CLASS) ");
}
}
catch (Exception e){
out.println(DateTimeFormatter.ofPattern(dateTimeFormat)
.format(LocalDateTime.now())
+ " ERROR: Cannot initialized web driver, " +
"forcing to kill all Edge browsers and Web Drivers " + e);
try {
Runtime.getRuntime().exec("taskkill /F /IM msedgedriver.exe /T");
Runtime.getRuntime().exec("taskkill /F /IM msedge.exe /T");
browser = null;
} catch (Exception err){
out.println(DateTimeFormatter.ofPattern(dateTimeFormat)
.format(LocalDateTime.now()) + " ERROR: Cannot execute task kill (GET-DRIVER CLASS)");
}
if (count < webdriverRetry){
out.println(DateTimeFormatter.ofPattern(dateTimeFormat)
.format(LocalDateTime.now())
+ " INFO: Web driver will retry to initialized, Retry Count: " + count);
out.println(" ");
count ++;
}else if(count > webdriverRetry){
out.println(DateTimeFormatter.ofPattern(dateTimeFormat)
.format(LocalDateTime.now())
+ " ERROR: Maximum retry limit has been reached");
out.println(" ");
}
System.out.println("ERROR: Cannot initialized web driver " + e);
}
} // End if
} // End while
return browser;
}
}
The above Java class will retry to load the web driver session. 100% this will work when I'm running this on my local machine via CMD and on the Windows Server. But if I will run this via task scheduler there's a chance that the web driver session cannot be initialized.
Based on my investigation and theory It's failing due to windows doesn't have a GUI when using task scheduler.
So my question is there a workaround for windows to run the task scheduler and allow the Java app that I've created to allow automatic GUI interaction.
