Unlock 30% off on Manual Testing Annual Plans this Holiday Season. 
Use Code: LCMYEARENDEXCL30
Use Code: LCMYEARENDEXCL30Check icon
Copied to Clipboard!
How to use release method of org.openqa.selenium.grid.distributor.GridModel class
Best Selenium code snippet using org.openqa.selenium.grid.distributor.GridModel.release
Source:LocalDistributor.java 
...449 }450 // Try and find a slot that we can use for this session. While we451 // are finding the slot, no other session can possibly be started.452 // Therefore, spend as little time as possible holding the write453 // lock, and release it as quickly as possible. Under no454 // circumstances should we try to actually start the session itself455 // in this next block of code.456 SlotId selectedSlot = reserveSlot(request.getRequestId(), caps);457 if (selectedSlot == null) {458 LOG.info(459 String.format("Unable to find a free slot for request %s. %s ",460 request.getRequestId(),461 caps));462 retry = true;463 continue;464 }465 CreateSessionRequest singleRequest = new CreateSessionRequest(466 request.getDownstreamDialects(),467 caps,...
Source:GridModel.java
...58 events.addListener(NodeDrainStarted.listener(nodeId -> setAvailability(nodeId, DRAINING)));59 events.addListener(NodeDrainComplete.listener(this::remove));60 events.addListener(NodeRemovedEvent.listener(this::remove));61 events.addListener(NodeStatusEvent.listener(status -> refresh(registrationSecret, status)));62 events.addListener(SessionClosedEvent.listener(this::release));63 }64 public GridModel add(NodeStatus node) {65 Require.nonNull("Node", node);66 Lock writeLock = lock.writeLock();67 writeLock.lock();68 try {69 // If we've already added the node, remove it.70 for (Set<NodeStatus> nodes : nodes.values()) {71 Iterator<NodeStatus> iterator = nodes.iterator();72 while (iterator.hasNext()) {73 NodeStatus next = iterator.next();74 // If the ID is the same, we're re-adding a node. If the URI is the same a node probably restarted75 if (next.getId().equals(node.getId()) || next.getUri().equals(node.getUri())) {76 LOG.info(String.format("Re-adding node with id %s and URI %s.", node.getId(), node.getUri()));77 iterator.remove();78 }79 }80 }81 // Nodes are initially added in the "down" state until something changes their availability82 nodes(DOWN).add(node);83 } finally {84 writeLock.unlock();85 }86 return this;87 }88 public GridModel refresh(Secret registrationSecret, NodeStatus status) {89 Require.nonNull("Node status", status);90 Secret statusSecret = status.getRegistrationSecret() == null ? null : new Secret(status.getRegistrationSecret());91 if (!Objects.equals(registrationSecret, statusSecret)) {92 LOG.severe(String.format("Node at %s failed to send correct registration secret. Node NOT refreshed.", status.getUri()));93 events.fire(new NodeRejectedEvent(status.getUri()));94 return this;95 }96 Lock writeLock = lock.writeLock();97 writeLock.lock();98 try {99 AvailabilityAndNode availabilityAndNode = findNode(status.getId());100 if (availabilityAndNode == null) {101 return this;102 }103 // if the node was marked as "down", keep it down until a healthcheck passes:104 // just because the node can hit the event bus doesn't mean it's reachable105 if (DOWN.equals(availabilityAndNode.availability)) {106 nodes(DOWN).remove(availabilityAndNode.status);107 nodes(DOWN).add(status);108 return this;109 }110 // But do trust the node if it tells us it's draining111 nodes(availabilityAndNode.availability).remove(availabilityAndNode.status);112 nodes(status.getAvailability()).add(status);113 return this;114 } finally {115 writeLock.unlock();116 }117 }118 public GridModel remove(NodeId id) {119 Require.nonNull("Node ID", id);120 Lock writeLock = lock.writeLock();121 writeLock.lock();122 try {123 AvailabilityAndNode availabilityAndNode = findNode(id);124 if (availabilityAndNode == null) {125 return this;126 }127 nodes(availabilityAndNode.availability).remove(availabilityAndNode.status);128 return this;129 } finally {130 writeLock.unlock();131 }132 }133 public Availability setAvailability(NodeId id, Availability availability) {134 Require.nonNull("Node ID", id);135 Require.nonNull("Availability", availability);136 Lock writeLock = lock.writeLock();137 writeLock.lock();138 try {139 AvailabilityAndNode availabilityAndNode = findNode(id);140 if (availabilityAndNode == null) {141 return DOWN;142 }143 if (availability.equals(availabilityAndNode.availability)) {144 return availability;145 }146 nodes(availabilityAndNode.availability).remove(availabilityAndNode.status);147 nodes(availability).add(availabilityAndNode.status);148 LOG.info(String.format(149 "Switching node %s (uri: %s) from %s to %s",150 id,151 availabilityAndNode.status.getUri(),152 availabilityAndNode.availability,153 availability));154 return availabilityAndNode.availability;155 } finally {156 writeLock.unlock();157 }158 }159 public boolean reserve(SlotId slotId) {160 Lock writeLock = lock.writeLock();161 writeLock.lock();162 try {163 AvailabilityAndNode node = findNode(slotId.getOwningNodeId());164 if (node == null) {165 LOG.warning(String.format("Asked to reserve slot on node %s, but unable to find node", slotId.getOwningNodeId()));166 return false;167 }168 if (!UP.equals(node.availability)) {169 LOG.warning(String.format(170 "Asked to reserve a slot on node %s, but not is %s",171 slotId.getOwningNodeId(),172 node.availability));173 return false;174 }175 Optional<Slot> maybeSlot = node.status.getSlots().stream()176 .filter(slot -> slotId.equals(slot.getId()))177 .findFirst();178 if (!maybeSlot.isPresent()) {179 LOG.warning(String.format(180 "Asked to reserve slot on node %s, but no slot with id %s found",181 node.status.getId(),182 slotId));183 return false;184 }185 reserve(node.status, maybeSlot.get());186 return true;187 } finally {188 writeLock.unlock();189 }190 }191 public Set<NodeStatus> getSnapshot() {192 Lock readLock = this.lock.readLock();193 readLock.lock();194 try {195 ImmutableSet.Builder<NodeStatus> snapshot = ImmutableSet.builder();196 for (Map.Entry<Availability, Set<NodeStatus>> entry : nodes.entrySet()) {197 entry.getValue().stream()198 .map(status -> rewrite(status, entry.getKey()))199 .forEach(snapshot::add);200 }201 return snapshot.build();202 } finally {203 readLock.unlock();204 }205 }206 private Set<NodeStatus> nodes(Availability availability) {207 return nodes.computeIfAbsent(availability, ignored -> new HashSet<>());208 }209 private AvailabilityAndNode findNode(NodeId id) {210 for (Map.Entry<Availability, Set<NodeStatus>> entry : nodes.entrySet()) {211 for (NodeStatus nodeStatus : entry.getValue()) {212 if (id.equals(nodeStatus.getId())) {213 return new AvailabilityAndNode(entry.getKey(), nodeStatus);214 }215 }216 }217 return null;218 }219 private NodeStatus rewrite(NodeStatus status, Availability availability) {220 return new NodeStatus(221 status.getId(),222 status.getUri(),223 status.getMaxSessionCount(),224 status.getSlots(),225 availability,226 status.getRegistrationSecret() == null ? null : new Secret(status.getRegistrationSecret()));227 }228 private void release(SessionId id) {229 if (id == null) {230 return;231 }232 Lock writeLock = lock.writeLock();233 writeLock.lock();234 try {235 for (Map.Entry<Availability, Set<NodeStatus>> entry : nodes.entrySet()) {236 for (NodeStatus node : entry.getValue()) {237 for (Slot slot : node.getSlots()) {238 if (!slot.getSession().isPresent()) {239 continue;240 }241 if (id.equals(slot.getSession().get().getId())) {242 Slot released = new Slot(243 slot.getId(),244 slot.getStereotype(),245 slot.getLastStarted(),246 Optional.empty());247 amend(entry.getKey(), node, released);248 return;249 }250 }251 }252 }253 } finally {254 writeLock.unlock();255 }256 }257 private void reserve(NodeStatus status, Slot slot) {258 Instant now = Instant.now();259 Slot reserved = new Slot(260 slot.getId(),261 slot.getStereotype(),...
release
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.config.SessionMapOptions;5import org.openqa.selenium.grid.sessionmap.local.LocalSessionMap;6import org.openqa.selenium.grid.web.Routable;7import org.openqa.selenium.grid.web.Routes;8import org.openqa.selenium.grid.web.Values;9import org.openqa.selenium.net.PortProber;10import org.openqa.selenium.remote.http.HttpClient;11import org.openqa.selenium.remote.http.HttpMethod;12import org.openqa.selenium.remote.http.HttpRequest;13import org.openqa.selenium.remote.http.HttpResponse;14import org.openqa.selenium.remote.tracing.DefaultTestTracer;15import org.openqa.selenium.remote.tracing.Tracer;16import java.net.URI;17import java.time.Duration;18import java.util.List;19import java.util.Map;20import java.util.Objects;21import java.util.Optional;22import java.util.concurrent.TimeUnit;23import java.util.logging.Logger;24import static org.openqa.selenium.grid.config.StandardGridRoles.DISTRIBUTOR_ROLE;25import static org.openqa.selenium.grid.config.StandardGridRoles.NODE_ROLE;26public class ReleaseSession {27 private static final Logger LOG = Logger.getLogger(ReleaseSession.class.getName());28 private static final Tracer TRACER = DefaultTestTracer.createTracer();29 private static final int DISTRIBUTOR_PORT = PortProber.findFreePort();30 private static final int NODE_PORT = PortProber.findFreePort();31 public static void main(String[] args) {32 .add(new FakeDriver())33 .build();34 .add(node)35 .build();36 LocalSessionMap sessions = LocalSessionMap.create(TRACER, new SessionMapOptions());37 HttpRequest newSessionRequest = new HttpRequest(HttpMethod.POST, "/session");38 newSessionRequest.setContent(Values.asJson(Map.of("desiredCapabilities", Map.of("browserName", "fake"))));39 HttpResponse newSessionResponse = distributor.execute(newSessionRequest);40 String sessionId = Values.get(newSessionResponse, "value", "sessionId").toString();
release
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.server.BaseServerOptions;5import org.openqa.selenium.grid.server.Server;6import org.openqa.selenium.grid.web.CombinedHandler;7import org.openqa.selenium.grid.web.RoutableHttpClientFactory;8import org.openqa.selenium.grid.web.Values;9import org.openqa.selenium.remote.http.HttpClient;10import org.openqa.selenium.remote.http.HttpHandler;11import org.openqa.selenium.remote.http.Route;12import org.openqa.selenium.remote.tracing.GlobalDistributor;13import org.openqa.selenium.remote.tracing.Tracer;14import org.openqa.selenium.remote.tracing.opentelemetry.OpenTelemetryTracer;15import org.openqa.selenium.remote.tracing.zipkin.ZipkinTracer;16import java.net.URI;17import java.net.URISyntaxException;18import java.util.logging.Logger;19public class Grid {20 private static final Logger LOG = Logger.getLogger(Grid.class.getName());21 public static void main(String[] args) throws URISyntaxException {22 Tracer tracer = new ZipkinTracer();23 HttpClient.Factory clientFactory = new RoutableHttpClientFactory();24 BaseServerOptions serverOptions = new BaseServerOptions();25 serverOptions.setPort(4444);26 Server<?> server = new Server<>(serverOptions, new CombinedHandler(), clientFactory, tracer);27 LocalNode.Builder nodeBuilder = LocalNode.builder(tracer, clientFactory);28 LocalDistributor.Builder distributorBuilder = LocalDistributor.builder(tracer);29 distributorBuilder.add(nodeBuilder.build());30 GridModel model = new GridModel(31 distributorBuilder.build(),32 Values.getOrDefault(33 server.getUrl(),34 server.addHandler(new Route("/session").to(() -> model.getNewSessionHandler()));35 server.addHandler(new Route("/se/grid/distributor").to(() -> model.getDistributorHandler()));36 server.addHandler(new Route("/se/grid/node").to(() -> model.getNodeHandler()));37 server.addHandler(new Route("/se/grid/queue").to(() -> model.getQueueHandler()));38 server.addHandler(new Route("/se/grid/release").to(() -> model.getReleaseHandler()));39 server.addHandler(new Route("/se/grid/status").to(() -> model.getStatusHandler()));40 try {41 server.start();42 } catch (Exception e
release
Using AI Code Generation
1import org.openqa.selenium.grid.distributor.GridModel;2import org.openqa.selenium.grid.distributor.local.LocalDistributor;3import org.openqa.selenium.grid.distributor.remote.RemoteDistributor;4import org.openqa.selenium.grid.node.local.LocalNode;5import org.openqa.selenium.grid.sessionmap.config.SessionMapOptions;6import org.openqa.selenium.grid.sessionmap.local.LocalSessionMap;7import org.openqa.selenium.grid.web.Routable;8import org.openqa.selenium.grid.web.Routes;9import org.openqa.selenium.remote.http.HttpClient;10import org.openqa.selenium.remote.http.HttpRequest;11import org.openqa.selenium.remote.http.HttpResponse;12import java.net.URI;13import java.util.Collections;14import java.util.List;15public class DistributorReleaseSession {16 public static void main(String[] args) throws Exception {17 LocalSessionMap sessions = new LocalSessionMap(new SessionMapOptions());18 LocalDistributor distributor = new LocalDistributor(sessions);19 LocalNode node = LocalNode.builder(distributor.getUri(), HttpClient.Factory.createDefault())20 .add(caps -> true, sessions)21 .build();22 RemoteDistributor remoteDistributor = new RemoteDistributor(23 HttpClient.Factory.createDefault(), distributor.getUri());24 URI session = node.newSession(HttpRequest.builder()25 .setMethod("POST")26 .addHeader("Content-Type", "application/json")27 .setUri(URI.create("/session"))28 .setContent("{ \"desiredCapabilities\": { \"browserName\": \"chrome\" } }".getBytes())29 .build());30 remoteDistributor.release(session);31 node.stop();32 distributor.stop();33 }34}35import org.openqa.selenium.grid.distributor.GridModel;36import org.openqa.selenium.grid.distributor.local.LocalDistributor;37import org.openqa.selenium.grid.distributor.remote.RemoteDistributor;38import org.openqa.selenium.grid.node.local.LocalNode;39import org.openqa.selenium.grid.sessionmap.config.SessionMapOptions;40import org.openqa.selenium.grid.sessionmap.local.LocalSessionMap;41import org.openqa.selenium.grid.web.Routable;42import org.openqa.selenium.grid.web.Routes;43import org.openqa.selenium.remote.http.HttpClient;44import org.openqa.selenium.remote.http.HttpRequest;45import org.openqa.selenium
release
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.config.SessionMapOptions;5import org.openqa.selenium.grid.sessionmap.local.LocalSessionMap;6import org.openqa.selenium.remote.http.HttpClient;7import org.openqa.selenium.remote.http.HttpClient.Factory;8import org.openqa.selenium.remote.http.HttpClientOptions;9import org.openqa.selenium.remote.tracing.Tracer;10import org.openqa.selenium.remote.tracing.jaeger.JaegerOptions;11import org.openqa.selenium.remote.tracing.jaeger.JaegerOptions.TracingImplementation;12import org.openqa.selenium.remote.tracing.opentelemetry.OpenTelemetryOptions;13import java.net.URI;14import java.time.Duration;15import java.util.concurrent.TimeUnit;16public class ReleaseSession {17 public static void main(String[] args) throws Exception {18 Tracer tracer = new JaegerOptions(19 new OpenTelemetryOptions(20 new JaegerOptions(21 .createTracer();22 Factory clientFactory = HttpClient.Factory.createDefault();23 LocalSessionMap sessions = new LocalSessionMap(24 new SessionMapOptions());25 LocalDistributor distributor = new LocalDistributor(26 LocalNode node = LocalNode.builder(tracer, clientFactory)27 .build();28 distributor.start();29 node.start();30 distributor.add(node);31 GridModel model = new GridModel(distributor, sessions);32 model.release(sessionUri);33 node.stop();34 distributor.stop();35 }36}
release
Using AI Code Generation
1import groovy.json.JsonSlurper2import org.openqa.selenium.grid.distributor.GridModel3import org.openqa.selenium.grid.distributor.local.LocalDistributor4import org.openqa.selenium.grid.node.local.LocalNode5import org.openqa.selenium.grid.server.BaseServerOptions6import org.openqa.selenium.grid.server.Server7import org.openqa.selenium.remote.http.HttpClient8import org.openqa.selenium.remote.http.HttpClientFactory9import org.openqa.selenium.remote.http.HttpRequest10import org.openqa.selenium.remote.http.HttpResponse11import org.openqa.selenium.remote.tracing.Tracer12import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerOptions13import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerOptions.JAEGER_AGENT_HOST14import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerOptions.JAEGER_AGENT_PORT15import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerOptions.JAEGER_SAMPLER_TYPE16import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerOptions.JAEGER_SAMPLER_VALUE17import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerOptions.JAEGER_SERVICE_NAME18import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerOptions.JAEGER_TAGS19import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerTracer20import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerTracerFactory21import org.openqa.selenium.remote.tracing.distributed.jaeger.JaegerTracerFactory.createTracer22import java.net.URI23import java.time.Duration24import java.util.logging.Logger25import static org.openqa.selenium.grid.config.StandardGridRoles.DISTRIBUTOR_ROLE26def log = Logger.getLogger("Grid")27def grid = Server.createGridServer(28 new BaseServerOptions(29 new URI(gridAddress),30 Duration.ofSeconds(30),31 new JaegerOptions(32 new URI(jaegerAddress),
release
Using AI Code Generation
1import org.openqa.selenium.grid.config.Config;2import org.openqa.selenium.grid.config.MapConfig;3import org.openqa.selenium.grid.distributor.local.LocalDistributor;4import org.openqa.selenium.grid.distributor.local.LocalDistributorFactory;5import org.openqa.selenium.grid.node.local.LocalNode;6import org.openqa.selenium.grid.node.local.LocalNodeFactory;7import org.openqa.selenium.grid.web.Routable;8import org.openqa.selenium.grid.web.Routes;9import org.openqa.selenium.remote.http.HttpClient;10import org.openqa.selenium.remote.http.HttpMethod;11import org.openqa.selenium.remote.http.HttpRequest;12import org.openqa.selenium.remote.http.HttpResponse;13import java.net.URI;14import java.util.Map;15import java.util.logging.Logger;16public class GridModel {17 private static final Logger LOG = Logger.getLogger(GridModel.class.getName());18 private final LocalDistributor distributor;19 private final LocalNode node;20 public GridModel(URI uri, HttpClient.Factory clientFactory) {21 Config config = new MapConfig(Map.of(22 "server", Map.of(23 "node", Map.of(24 "url", uri.toString(),25 "distributor", Map.of(26 "register", false)));27 LocalNodeFactory nodeFactory = new LocalNodeFactory();28 LocalDistributorFactory distributorFactory = new LocalDistributorFactory();29 this.distributor = distributorFactory.apply(config, clientFactory);30 this.node = nodeFactory.apply(config, clientFactory);31 this.distributor.add(node);32 }33 public void release(String sessionId) {34 HttpRequest request = new HttpRequest(HttpMethod.DELETE, "/session/" + sessionId);35 HttpResponse response = distributor.execute(request);36 LOG.info("response from release: " + response.getStatus());37 }38 public void stop() {39 distributor.stop();40 node.stop();41 }42 public static void main(String[] args) {43 HttpRequest request = new HttpRequest(HttpMethod.POST, "/session");44 HttpResponse response = model.distributor.execute(request);45 String sessionId = response.getHeader("Location").orElse("No session
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.
Selenium 101 certifications:
LambdaTest also provides certification for Selenium testing to accelerate your career in Selenium automation testing.
Run Selenium automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Most used method in GridModel
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
