Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use purgeDeadNodes method of org.openqa.selenium.grid.distributor.GridModel class

Best Selenium code snippet using org.openqa.selenium.grid.distributor.GridModel.purgeDeadNodes

Source:LocalDistributor.java

...135    }));136    bus.addListener(NodeDrainComplete.listener(this::remove));137    bus.addListener(NewSessionRequestEvent.listener(requestIds::offer));138    Regularly regularly = new Regularly("Local Distributor");139    regularly.submit(model::purgeDeadNodes, Duration.ofSeconds(30), Duration.ofSeconds(30));140    Thread shutdownHook = new Thread(this::callExecutorShutdown);141    Runtime.getRuntime().addShutdownHook(shutdownHook);142    NewSessionRunnable runnable = new NewSessionRunnable();143    ThreadFactory threadFactory = r -> {144      Thread thread = new Thread(r);145      thread.setName("New Session Creation");146      thread.setDaemon(true);147      return thread;148    };149    executorService = Executors.newSingleThreadScheduledExecutor(threadFactory);150    executorService.scheduleAtFixedRate(runnable, 0, 1000, TimeUnit.MILLISECONDS);151  }152  public static Distributor create(Config config) {153    Tracer tracer = new LoggingOptions(config).getTracer();...

Source:GridModel.java

...130    } finally {131      writeLock.unlock();132    }133  }134  public void purgeDeadNodes() {135    long now = System.currentTimeMillis();136    Lock writeLock = lock.writeLock();137    writeLock.lock();138    try {139      Set<NodeStatus> lost = nodes(UP).stream()140        .filter(status -> now - status.touched() > status.heartbeatPeriod().toMillis() * 2)141        .collect(toSet());142      Set<NodeStatus> resurrected = nodes(DOWN).stream()143        .filter(status -> now - status.touched() <= status.heartbeatPeriod().toMillis())144        .collect(toSet());145      Set<NodeStatus> dead = nodes(DOWN).stream()146        .filter(status -> now - status.touched() > status.heartbeatPeriod().toMillis() * 4)147        .collect(toSet());148      if (lost.size() > 0) {...

purgeDeadNodes

Using AI Code Generation

1import org.openqa.selenium.grid.distributor.local.LocalDistributor;2import org.openqa.selenium.grid.distributor.local.LocalDistributorOptions;3import org.openqa.selenium.grid.distributor.local.LocalDistributorFactory;4import org.openqa.selenium.grid.distributor.local.DistributorStatus;5import org.openqa.selenium.grid.distributor.local.DistributorStatusResponse;6import org.openqa.selenium.grid.config.Config;7import org.openqa.selenium.grid.config.MapConfig;8import org.openqa.selenium.grid.web.Routable;9import org.openqa.selenium.remote.http.HttpMethod;10import org.openqa.selenium.remote.http.HttpRequest;11import org.openqa.selenium.remote.http.HttpResponse;12import java.time.Duration;13import java.util.Map;14import java.util.HashMap;15import java.util.logging.Logger;16public class PurgeDeadNodes {17  private static final Logger LOG = Logger.getLogger(PurgeDeadNodes.class.getName());18  public static void main(String[] args) {19    Map<String, String> rawConfig = new HashMap<>();20    rawConfig.put("distributor", "local");21    Config config = new MapConfig(rawConfig);22    LocalDistributorOptions localDistributorOptions = new LocalDistributorOptions(config);23    LocalDistributorFactory localDistributorFactory = new LocalDistributorFactory(localDistributorOptions);24    LocalDistributor localDistributor = localDistributorFactory.apply(null);25    localDistributor.purgeDeadNodes(Duration.ofSeconds(30));26  }27}

purgeDeadNodes

Using AI Code Generation

1package com.selenium4beginners.java.grid;2import java.net.URI;3import java.net.URISyntaxException;4import java.util.HashMap;5import java.util.Map;6import org.openqa.selenium.grid.config.Config;7import org.openqa.selenium.grid.config.MemoizedConfig;8import org.openqa.selenium.grid.config.TomlConfig;9import org.openqa.selenium.grid.distributor.Distributor;10import org.openqa.selenium.grid.distributor.local.LocalDistributor;11import org.openqa.selenium.grid.distributor.model.GridModel;12import org.openqa.selenium.grid.node.local.LocalNode;13import org.openqa.selenium.grid.server.BaseServerOptions;14import org.openqa.selenium.grid.server.Server;15import org.openqa.selenium.grid.server.ServerFlags;16import org.openqa.selenium.grid.web.Routes;17import org.openqa.selenium.remote.http.HttpClient;18import org.openqa.selenium.remote.http.HttpMethod;19import org.openqa.selenium.remote.http.HttpRequest;20import org.openqa.selenium.remote.http.HttpResponse;21import org.openqa.selenium.remote.http.Route;22import org.openqa.selenium.remote.tracing.DefaultTestTracer;23import org.openqa.selenium.remote.tracing.Tracer;24public class RemoveDeadNodesFromGrid {25  public static void main(String[] args) throws URISyntaxException {26    Tracer tracer = DefaultTestTracer.createTracer();27    Config config = new MemoizedConfig(new TomlConfig("config.toml"));28    Server<?> server = createServer(tracer, config);29    server.start();30    purgeDeadNodes(server.getUrl().toString());31    server.stop();32  }33  private static Server<?> createServer(Tracer tracer, Config config) {34    ServerFlags serverFlags = new ServerFlags();35    BaseServerOptions serverOptions = new BaseServerOptions(config, serverFlags);36    GridModel model = new GridModel(tracer);37    Distributor distributor = new LocalDistributor(tracer, model);38    LocalNode.Builder node = LocalNode.builder(tracer, config);39    node.add(distributor);40    Server<?> server = serverOptions.getServerFactory().createServer(serverOptions);

purgeDeadNodes

Using AI Code Generation

1package com.saikrishna.wms;2import java.net.URI;3import java.util.concurrent.TimeUnit;4import org.openqa.selenium.Capabilities;5import org.openqa.selenium.SessionNotCreatedException;6import org.openqa.selenium.grid.data.Session;7import org.openqa.selenium.grid.distributor.Distributor;8import org.openqa.selenium.grid.distributor.local.LocalDistributor;9import org.openqa.selenium.grid.distributor.model.GridModel;10import org.openqa.selenium.grid.node.local.LocalNode;11import org.openqa.selenium.grid.sessionmap.config.SessionMapOptions;12import org.openqa.selenium.grid.sessionmap.local.LocalSessionMap;13import org.openqa.selenium.grid.web.Routable;14import org.openqa.selenium.grid.web.Routes;15import org.openqa.selenium.remote.http.HttpClient;16import org.openqa.selenium.remote.tracing.Tracer;17import org.openqa.selenium.remote.tracing.noop.NoOpTracer;18import org.openqa.selenium.remote.tracing.zipkin.ZipkinTracer;19public class DistributorExample {20  public static void main(String[] args) {21    Tracer tracer = new NoOpTracer();22    HttpClient.Factory clientFactory = HttpClient.Factory.createDefault();23    GridModel model = GridModel.create(tracer, clientFactory);24    LocalSessionMap sessions = new LocalSessionMap(25        new SessionMapOptions(),26        clientFactory);27    Distributor distributor = new LocalDistributor(tracer, model, sessions);28    LocalNode.Builder nodeBuilder = LocalNode.builder(tracer, clientFactory, distributor)29        .add(caps("chrome"), 5)30        .add(caps("firefox"), 5);31    LocalNode node = nodeBuilder.build();32    Routes routes = new Routes();33    routes.add(((Routable) node).getRoute());34    routes.add(((Routable) distributor).getRoute());35    for (int i = 0; i < 10; i++) {36      try {37        Session session = distributor.newSession(caps("chrome"));38        System.out.println("Session ID: " + session.getId());39        System.out.println("Session URI: " + session.getUri());40        System.out.println("Session Capabilities: " + session.getCapabilities());41      } catch (SessionNotCreatedException e) {42        System.out.println("No node available to create session");43      }44    }45    System.out.println("Number of nodes: " + model.getNodes().size());46    System.out.println("Number of sessions: " + sessions.getSessions().size());

purgeDeadNodes

Using AI Code Generation

1import org.openqa.selenium.grid.distributor.GridModel;2import org.openqa.selenium.grid.distributor.local.LocalDistributor;3import org.openqa.selenium.grid.node.local.LocalNode;4import org.openqa.selenium.grid.sessionmap.local.LocalSessionMap;5import org.openqa.selenium.remote.http.HttpClient;6import org.openqa.selenium.remote.tracing.Tracer;7import org.openqa.selenium.remote.tracing.distributed.DistributedTracer;8import org.openqa.selenium.remote.tracing.opentelemetry.OpenTelemetryOptions;9import org.openqa.selenium.remote.tracing.opentelemetry.OpenTelemetryTracer;10import org.openqa.selenium.remote.tracing.opentelemetry.config.OpenTelemetryConfig;11import java.io.IOException;12import java.net.MalformedURLException;13import java.net.URL;14import java.time.Duration;15import java.util.Collection;16public class PurgeDeadNodes {17    public static void main(String[] args) throws MalformedURLException, IOException {18        Tracer tracer = new DistributedTracer(new OpenTelemetryTracer(OpenTelemetryConfig.builder()19                .setServiceName("selenium-grid")20                .setOpenTelemetryOptions(OpenTelemetryOptions.builder()21                        .setTimeout(Duration.ofSeconds(10))22                        .build())23                .build()));24        LocalSessionMap sessions = new LocalSessionMap(tracer);25        LocalDistributor distributor = new LocalDistributor(tracer, sessions);26        GridModel model = new GridModel(sessions, distributor);27        HttpClient.Factory factory = HttpClient.Factory.createDefault();28        LocalNode node = LocalNode.builder(tracer, factory)29                .add(caps -> true, Duration.ofMinutes(1))30                .build();31        model.add(node);32        Collection<LocalNode> staleNodes = model.purgeDeadNodes(Duration.ofMinutes(1).toMillis());33        System.out.println("Purged nodes: " + staleNodes);34    }35}

Selenium 4 Tutorial:

LambdaTest’s Selenium 4 tutorial is covering every aspects of Selenium 4 testing with examples and best practices. Here you will learn basics, such as how to upgrade from Selenium 3 to Selenium 4, to some advanced concepts, such as Relative locators and Selenium Grid 4 for Distributed testing. Also will learn new features of Selenium 4, such as capturing screenshots of specific elements, opening a new tab or window on the browser, and new protocol adoptions.

Chapters:

Upgrading From Selenium 3 To Selenium 4?: In this chapter, learn in detail how to update Selenium 3 to Selenium 4 for Java binding. Also, learn how to upgrade while using different build tools such as Maven or Gradle and get comprehensive guidance for upgrading Selenium.
What’s New In Selenium 4 & What’s Being Deprecated? : Get all information about new implementations in Selenium 4, such as W3S protocol adaption, Optimized Selenium Grid, and Enhanced Selenium IDE. Also, learn what is deprecated for Selenium 4, such as DesiredCapabilites and FindsBy methods, etc.
Selenium 4 With Python: Selenium supports all major languages, such as Python, C#, Ruby, and JavaScript. In this chapter, learn how to install Selenium 4 for Python and the features of Python in Selenium 4, such as Relative locators, Browser manipulation, and Chrom DevTool protocol.
Selenium 4 Is Now W3C Compliant: JSON Wireframe protocol is retiring from Selenium 4, and they are adopting W3C protocol to learn in detail about the advantages and impact of these changes.
How To Use Selenium 4 Relative Locator? : Selenium 4 came with new features such as Relative Locators that allow constructing locators with reference and easily located constructors nearby. Get to know its different use cases with examples.
Selenium Grid 4 Tutorial For Distributed Testing: Selenium Grid 4 allows you to perform tests over different browsers, OS, and device combinations. It also enables parallel execution browser testing, reads up on various features of Selenium Grid 4 and how to download it, and runs a test on Selenium Grid 4 with best practices.
Selenium Video Tutorials: Binge on video tutorials on Selenium by industry experts to get step-by-step direction from automating basic to complex test scenarios with Selenium.