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

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

Source:GridModel.java

1// Licensed to the Software Freedom Conservancy (SFC) under one2// or more contributor license agreements.  See the NOTICE file3// distributed with this work for additional information4// regarding copyright ownership.  The SFC licenses this file5// to you under the Apache License, Version 2.0 (the6// "License"); you may not use this file except in compliance7// with the License.  You may obtain a copy of the License at8//9//   http://www.apache.org/licenses/LICENSE-2.010//11// Unless required by applicable law or agreed to in writing,12// software distributed under the License is distributed on an13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY14// KIND, either express or implied.  See the License for the15// specific language governing permissions and limitations16// under the License.17package org.openqa.selenium.grid.distributor.local;18import com.google.common.collect.ImmutableSet;19import org.openqa.selenium.events.EventBus;20import org.openqa.selenium.grid.data.Availability;21import org.openqa.selenium.grid.data.NodeDrainComplete;22import org.openqa.selenium.grid.data.NodeDrainStarted;23import org.openqa.selenium.grid.data.NodeId;24import org.openqa.selenium.grid.data.NodeRejectedEvent;25import org.openqa.selenium.grid.data.NodeRemovedEvent;26import org.openqa.selenium.grid.data.NodeStatus;27import org.openqa.selenium.grid.data.NodeStatusEvent;28import org.openqa.selenium.grid.data.Session;29import org.openqa.selenium.grid.data.SessionClosedEvent;30import org.openqa.selenium.grid.data.Slot;31import org.openqa.selenium.grid.data.SlotId;32import org.openqa.selenium.grid.security.Secret;33import org.openqa.selenium.internal.Require;34import org.openqa.selenium.remote.SessionId;35import java.time.Instant;36import java.util.HashSet;37import java.util.Iterator;38import java.util.Map;39import java.util.Objects;40import java.util.Optional;41import java.util.Set;42import java.util.concurrent.ConcurrentHashMap;43import java.util.concurrent.locks.Lock;44import java.util.concurrent.locks.ReadWriteLock;45import java.util.concurrent.locks.ReentrantReadWriteLock;46import java.util.logging.Logger;47import static org.openqa.selenium.grid.data.Availability.DOWN;48import static org.openqa.selenium.grid.data.Availability.DRAINING;49import static org.openqa.selenium.grid.data.Availability.UP;50public class GridModel {51  private static final Logger LOG = Logger.getLogger(GridModel.class.getName());52  private static final SessionId RESERVED = new SessionId("reserved");53  private final ReadWriteLock lock = new ReentrantReadWriteLock(/* fair */ true);54  private final Map<Availability, Set<NodeStatus>> nodes = new ConcurrentHashMap<>();55  private final EventBus events;56  public GridModel(EventBus events, Secret registrationSecret) {57    this.events = Require.nonNull("Event bus", events);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(),262      now,263      Optional.of(new Session(264        RESERVED,265        status.getUri(),266        slot.getStereotype(),267        slot.getStereotype(),268        now)));269    amend(UP, status, reserved);270  }271  public void setSession(SlotId slotId, Session session) {272    Require.nonNull("Slot ID", slotId);273    AvailabilityAndNode node = findNode(slotId.getOwningNodeId());274    if (node == null) {275      LOG.warning("Grid model and reality have diverged. Unable to find node " + slotId.getOwningNodeId());276      return;277    }278    Optional<Slot> maybeSlot = node.status.getSlots().stream()279      .filter(slot -> slotId.equals(slot.getId()))280      .findFirst();281    if (!maybeSlot.isPresent()) {282      LOG.warning("Grid model and reality have diverged. Unable to find slot " + slotId);283      return;284    }285    Slot slot = maybeSlot.get();286    Optional<Session> maybeSession = slot.getSession();287    if (!maybeSession.isPresent()) {288      LOG.warning("Grid model and reality have diverged. Slot is not reserved. " + slotId);289      return;290    }291    Session current = maybeSession.get();292    if (!RESERVED.equals(current.getId())) {293      LOG.warning("Gid model and reality have diverged. Slot has session and is not reserved. " + slotId);294      return;295    }296    Slot updated = new Slot(297      slot.getId(),298      slot.getStereotype(),299      session == null ? slot.getLastStarted() : session.getStartTime(),300      Optional.ofNullable(session));301    amend(node.availability, node.status, updated);302  }303  private void amend(Availability availability, NodeStatus status, Slot slot) {304    Set<Slot> newSlots = new HashSet<>(status.getSlots());305    newSlots.removeIf(s -> s.getId().equals(slot.getId()));306    newSlots.add(slot);307    nodes(availability).remove(status);308    nodes(availability).add(new NodeStatus(309      status.getId(),310      status.getUri(),311      status.getMaxSessionCount(),312      newSlots,313      status.getAvailability(),314      status.getRegistrationSecret() == null ? null : new Secret(status.getRegistrationSecret())));315  }316  private static class AvailabilityAndNode {317    public final Availability availability;318    public final NodeStatus status;319    public AvailabilityAndNode(Availability availability, NodeStatus status) {320      this.availability = availability;321      this.status = status;322    }...

Source:LocalDistributor.java

1// Licensed to the Software Freedom Conservancy (SFC) under one2// or more contributor license agreements.  See the NOTICE file3// distributed with this work for additional information4// regarding copyright ownership.  The SFC licenses this file5// to you under the Apache License, Version 2.0 (the6// "License"); you may not use this file except in compliance7// with the License.  You may obtain a copy of the License at8//9//   http://www.apache.org/licenses/LICENSE-2.010//11// Unless required by applicable law or agreed to in writing,12// software distributed under the License is distributed on an13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY14// KIND, either express or implied.  See the License for the15// specific language governing permissions and limitations16// under the License.17package org.openqa.selenium.grid.distributor.local;18import com.google.common.collect.ImmutableSet;19import org.openqa.selenium.Beta;20import org.openqa.selenium.Capabilities;21import org.openqa.selenium.ImmutableCapabilities;22import org.openqa.selenium.SessionNotCreatedException;23import org.openqa.selenium.concurrent.Regularly;24import org.openqa.selenium.events.EventBus;25import org.openqa.selenium.grid.config.Config;26import org.openqa.selenium.grid.data.CreateSessionRequest;27import org.openqa.selenium.grid.data.CreateSessionResponse;28import org.openqa.selenium.grid.data.DistributorStatus;29import org.openqa.selenium.grid.data.NodeAddedEvent;30import org.openqa.selenium.grid.data.NodeDrainComplete;31import org.openqa.selenium.grid.data.NodeId;32import org.openqa.selenium.grid.data.NodeRemovedEvent;33import org.openqa.selenium.grid.data.NodeStatus;34import org.openqa.selenium.grid.data.NodeStatusEvent;35import org.openqa.selenium.grid.data.Slot;36import org.openqa.selenium.grid.data.SlotId;37import org.openqa.selenium.grid.distributor.Distributor;38import org.openqa.selenium.grid.distributor.selector.DefaultSlotSelector;39import org.openqa.selenium.grid.log.LoggingOptions;40import org.openqa.selenium.grid.node.HealthCheck;41import org.openqa.selenium.grid.node.Node;42import org.openqa.selenium.grid.node.remote.RemoteNode;43import org.openqa.selenium.grid.security.Secret;44import org.openqa.selenium.grid.server.BaseServerOptions;45import org.openqa.selenium.grid.server.EventBusOptions;46import org.openqa.selenium.grid.server.NetworkOptions;47import org.openqa.selenium.grid.sessionmap.SessionMap;48import org.openqa.selenium.grid.sessionmap.config.SessionMapOptions;49import org.openqa.selenium.internal.Require;50import org.openqa.selenium.remote.http.HttpClient;51import org.openqa.selenium.remote.tracing.Tracer;52import org.openqa.selenium.status.HasReadyState;53import java.time.Duration;54import java.util.ArrayList;55import java.util.HashMap;56import java.util.List;57import java.util.Map;58import java.util.Optional;59import java.util.Set;60import java.util.concurrent.locks.Lock;61import java.util.concurrent.locks.ReadWriteLock;62import java.util.concurrent.locks.ReentrantReadWriteLock;63import java.util.function.Supplier;64import java.util.logging.Level;65import java.util.logging.Logger;66import static com.google.common.collect.ImmutableSet.toImmutableSet;67import static org.openqa.selenium.grid.data.Availability.DOWN;68import static org.openqa.selenium.grid.data.Availability.DRAINING;69public class LocalDistributor extends Distributor {70  private static final Logger LOG = Logger.getLogger(LocalDistributor.class.getName());71  private final Tracer tracer;72  private final EventBus bus;73  private final HttpClient.Factory clientFactory;74  private final SessionMap sessions;75  private final Secret registrationSecret;76  private final Regularly hostChecker = new Regularly("distributor host checker");77  private final Map<NodeId, Runnable> allChecks = new HashMap<>();78  private final ReadWriteLock lock = new ReentrantReadWriteLock(/* fair */ true);79  private final GridModel model;80  private final Map<NodeId, Node> nodes;81  public LocalDistributor(82      Tracer tracer,83      EventBus bus,84      HttpClient.Factory clientFactory,85      SessionMap sessions,86      Secret registrationSecret) {87    super(tracer, clientFactory, new DefaultSlotSelector(), sessions, registrationSecret);88    this.tracer = Require.nonNull("Tracer", tracer);89    this.bus = Require.nonNull("Event bus", bus);90    this.clientFactory = Require.nonNull("HTTP client factory", clientFactory);91    this.sessions = Require.nonNull("Session map", sessions);92    this.model = new GridModel(bus, registrationSecret);93    this.nodes = new HashMap<>();94    this.registrationSecret = Require.nonNull("Registration secret", registrationSecret);95    bus.addListener(NodeStatusEvent.listener(this::register));96    bus.addListener(NodeStatusEvent.listener(model::refresh));97    bus.addListener(NodeDrainComplete.listener(this::remove));98  }99  public static Distributor create(Config config) {100    Tracer tracer = new LoggingOptions(config).getTracer();101    EventBus bus = new EventBusOptions(config).getEventBus();102    HttpClient.Factory clientFactory = new NetworkOptions(config).getHttpClientFactory(tracer);103    SessionMap sessions = new SessionMapOptions(config).getSessionMap();104    BaseServerOptions serverOptions = new BaseServerOptions(config);105    return new LocalDistributor(tracer, bus, clientFactory, sessions, serverOptions.getRegistrationSecret());106  }107  @Override108  public boolean isReady() {109    try {110      return ImmutableSet.of(bus, sessions).parallelStream()111        .map(HasReadyState::isReady)112        .reduce(true, Boolean::logicalAnd);113    } catch (RuntimeException e) {114      return false;115    }116  }117  private void register(NodeStatus status) {118    Require.nonNull("Node", status);119    Lock writeLock = lock.writeLock();120    writeLock.lock();121    try {122      if (nodes.containsKey(status.getId())) {123        return;124      }125      Set<Capabilities> capabilities = status.getSlots().stream()126        .map(Slot::getStereotype)127        .map(ImmutableCapabilities::copyOf)128        .collect(toImmutableSet());129      // A new node! Add this as a remote node, since we've not called add130      RemoteNode remoteNode = new RemoteNode(131        tracer,132        clientFactory,133        status.getId(),134        status.getUri(),135        registrationSecret,136        capabilities);137      add(remoteNode);138    } finally {139      writeLock.unlock();140    }141  }142  @Override143  public LocalDistributor add(Node node) {144    Require.nonNull("Node", node);145    LOG.info(String.format("Added node %s at %s.", node.getId(), node.getUri()));146    nodes.put(node.getId(), node);147    model.add(node.getStatus());148    // Extract the health check149    Runnable runnableHealthCheck = asRunnableHealthCheck(node);150    allChecks.put(node.getId(), runnableHealthCheck);151    hostChecker.submit(runnableHealthCheck, Duration.ofMinutes(5), Duration.ofSeconds(30));152    bus.fire(new NodeAddedEvent(node.getId()));153    return this;154  }155  private Runnable asRunnableHealthCheck(Node node) {156    HealthCheck healthCheck = node.getHealthCheck();157    NodeId id = node.getId();158    return () -> {159      HealthCheck.Result result;160      try {161        result = healthCheck.check();162      } catch (Exception e) {163        LOG.log(Level.WARNING, "Unable to process node " + id, e);164        result = new HealthCheck.Result(DOWN, "Unable to run healthcheck. Assuming down");165      }166      Lock writeLock = lock.writeLock();167      writeLock.lock();168      try {169        model.setAvailability(id, result.getAvailability());170      } finally {171        writeLock.unlock();172      }173    };174  }175  @Override176  public boolean drain(NodeId nodeId) {177    Node node = nodes.get(nodeId);178    if (node == null) {179      LOG.info("Asked to drain unregistered node " + nodeId);180      return false;181    }182    Lock writeLock = lock.writeLock();183    writeLock.lock();184    try {185      node.drain();186      model.setAvailability(nodeId, DRAINING);187    } finally {188      writeLock.unlock();189    }190    return node.isDraining();191  }192  public void remove(NodeId nodeId) {193    Lock writeLock = lock.writeLock();194    writeLock.lock();195    try {196      model.remove(nodeId);197      Runnable runnable = allChecks.remove(nodeId);198      if (runnable != null) {199        hostChecker.remove(runnable);200      }201    } finally {202      writeLock.unlock();203      bus.fire(new NodeRemovedEvent(nodeId));204    }205  }206  @Override207  public DistributorStatus getStatus() {208    Lock readLock = this.lock.readLock();209    readLock.lock();210    try {211      return new DistributorStatus(model.getSnapshot());212    } finally {213      readLock.unlock();214    }215  }216  @Beta217  public void refresh() {218    List<Runnable> allHealthChecks = new ArrayList<>();219    Lock readLock = this.lock.readLock();220    readLock.lock();221    try {222      allHealthChecks.addAll(allChecks.values());223    } finally {224      readLock.unlock();225    }226    allHealthChecks.parallelStream().forEach(Runnable::run);227  }228  @Override229  protected Set<NodeStatus> getAvailableNodes() {230    Lock readLock = this.lock.readLock();231    readLock.lock();232    try {233      return model.getSnapshot().stream()234        .filter(node -> !DOWN.equals(node.getAvailability()))235        .collect(toImmutableSet());236    } finally {...

add

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.remote.http.HttpClient;9import org.openqa.selenium.remote.tracing.DefaultTestTracer;10import org.openqa.selenium.remote.tracing.Tracer;11import java.net.URI;12import java.util.Map;13import java.util.Objects;14import java.util.function.Supplier;15public class Distributor {16  private final Supplier<HttpClient> clientFactory;17  private final Tracer tracer;18  private final LocalDistributor distributor;19  private final LocalSessionMap sessions;20  public Distributor(Supplier<HttpClient> clientFactory, Tracer tracer) {21    this.clientFactory = Objects.requireNonNull(clientFactory);22    this.tracer = Objects.requireNonNull(tracer);23    this.sessions = new LocalSessionMap(tracer, new SessionMapOptions());24    this.distributor = new LocalDistributor(tracer, sessions, clientFactory);25  }26  public void add(String id, URI uri) {27    LocalNode node = new LocalNode(tracer, clientFactory, uri);28    distributor.add(node);29    GridModel model = new GridModel(sessions, distributor);30    model.add(id, uri);31  }32  public Routes getRoutes() {33    return new Routes()34      .add(new DistributorRoutes(distributor));35  }36  private static class DistributorRoutes implements Routable {37    private final LocalDistributor distributor;38    private DistributorRoutes(LocalDistributor distributor) {39      this.distributor = Objects.requireNonNull(distributor);40    }41    public void configure(Routes routes) {42        .get("/status", (req, res) -> {43          res.setStatus(200);44          res.setContent("OK");45        })46        .post("/session", (req, res) -> {47          Map<String, Object> session = distributor.newSession(req);48          res.setStatus(200);49          res.setContent(session);50        });51    }52  }53  public static void main(String[] args) {54    Tracer tracer = DefaultTestTracer.createTracer();55    HttpClient.Factory clientFactory = HttpClient.Factory.createDefault();56    Distributor distributor = new Distributor(clientFactory

add

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.node.local.LocalNode.Builder;5import org.openqa.selenium.grid.server.BaseServerOptions;6import org.openqa.selenium.grid.server.Server;7import org.openqa.selenium.grid.web.Routable;8import org.openqa.selenium.remote.http.HttpClient;9import org.openqa.selenium.remote.http.HttpRequest;10import org.openqa.selenium.remote.http.HttpResponse;11import org.openqa.selenium.remote.tracing.Tracer;12import org.openqa.selenium.remote.tracing.opentelemetry.OpenTelemetryTracer;13import java.net.URI;14import java.util.Collections;15import java.util.List;16import java.util.Optional;17import java.util.concurrent.TimeUnit;18public class GridModelAddNodeExample {19  public static void main(String[] args) throws Exception {20    Tracer tracer = new OpenTelemetryTracer();21    HttpClient.Factory clientFactory = HttpClient.Factory.createDefault();22    Builder builder = LocalNode.builder(tracer, clientFactory);23    builder.add(new BaseServerOptions() {24      public URI getExternalUri() {25      }26    });27    builder.add(new BaseServerOptions() {28      public URI getExternalUri() {29      }30    });31    LocalNode node = builder.build();32    LocalDistributor distributor = LocalDistributor.builder(tracer, clientFactory).build();33    GridModel gridModel = new GridModel(distributor);34    gridModel.add(node);35    Server<?> server = Server.builder(tracer)36        .add(new BaseServerOptions() {37          public URI getExternalUri() {38          }39        })40        .add(new BaseServerOptions() {41          public URI getExternalUri() {42          }43        })44        .add(distributor)45        .build();46    server.start();

add

Using AI Code Generation

1    public void add(GridNode node) {2        Objects.requireNonNull(node);3        this.nodes.add(node);4        this.listeners.forEach(listener -> listener.nodeAdded(node));5    }6    public void remove(GridNode node) {7        Objects.requireNonNull(node);8        if (this.nodes.remove(node)) {9            this.listeners.forEach(listener -> listener.nodeRemoved(node));10        }11    }12    public void addListener(GridModelListener listener) {13        Objects.requireNonNull(listener);14        this.listeners.add(listener);15    }16    public void removeListener(GridModelListener listener) {17        Objects.requireNonNull(listener);18        this.listeners.remove(listener);19    }20    public Collection<GridNode> getNodes() {21        return Collections.unmodifiableCollection(this.nodes);22    }23    public Collection<ActiveSession> getActiveSessions() {24        return Collections.unmodifiableCollection(this.sessions.values());25    }26    public ActiveSession getActiveSession(SessionId id) {27        Objects.requireNonNull(id);28        return this.sessions.get(id);29    }30    public void addActiveSession(ActiveSession session) {31        Objects.requireNonNull(session);32        this.sessions.put(session.getId(), session);33        this.listeners.forEach(listener -> listener.sessionAdded(session));34    }35    public void removeActiveSession(ActiveSession session) {36        Objects.requireNonNull(session);37        if (this.sessions.remove(session.getId()) != null) {38            this.listeners.forEach(listener -> listener.sessionRemoved(session));39        }40    }41}42To add a node to the grid, we need to call the add() method of the GridModel class. Similarly, to remove a node from the grid, we need to call the

add

Using AI Code Generation

1    public void add(GridNode node) {2        Objects.requireNonNull(node);3        if (node.isDown()) {4            logger.info("Not adding a down node: {}", node);5            return;6        }7        if (node.isDraining()) {8            logger.info("Not adding a draining node: {}", node);9            return;10        }11        if (node.isDrained()) {12            logger.info("Not adding a drained node: {}", node);13            return;14        }15        if (node.isPending()) {16            logger.info("Not adding a pending node: {}", node);17            return;18        }19        if (node.isTerminated()) {20            logger.info("Not adding a terminated node: {}", node);21            return;22        }23        if (node.isTerminating()) {24            logger.info("Not adding a terminating node: {}", node);25            return;26        }27        if (node.isUnresponsive()) {28            logger.info("Not adding an unresponsive node: {}", node);29            return;30        }31        if (node.isLostContact()) {32            logger.info("Not adding a lost contact node: {}", node);33            return;34        }35        if (node.isRebooting()) {36            logger.info("Not adding a rebooting node: {}", node);37            return;38        }39        if (node.isShuttingDown()) {40            logger.info("Not adding a shutting down node: {}", node);41            return;42        }43        if (node.isStarting()) {44            logger.info("Not adding a starting node: {}", node);45            return;46        }47        if (node.isTimedOut()) {48            logger.info("Not adding a timed out node: {}", node);49            return;50        }51        if (node.isUnknown()) {52            logger.info("Not adding an unknown node: {}", node);53            return;54        }55        if (node.isUnstable()) {56            logger.info("Not adding an unstable node: {}", node);57            return;58        }59        if (node.isNotReachable()) {60            logger.info("Not adding a not reachable node: {}", node);61            return;62        }63        if (node.isIncompatible()) {64            logger.info("Not adding an incompatible node: {}", node);65            return;66        }67        if (node.isDisabled()) {68            logger.info("Not adding a disabled node: {}", node);69            return;70        }71        if (node.isMaxSessionsReached()) {72            logger.info("Not adding a max sessions reached

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