feat: add replicated maps

src/generated/java/io/neonbee/config/NeonBeeConfigConverter.java

@@ -102,6 +102,11 @@ static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, NeonBee
                     obj.setTrackingDataHandlingStrategy((String) member.getValue());
                 }
                 break;
+            case "useReplicatedMaps":
+                if (member.getValue() instanceof Boolean) {
+                    obj.setUseReplicatedMaps((Boolean) member.getValue());
+                }
+                break;
             case "verticleDeploymentTimeout":
                 if (member.getValue() instanceof Number) {
                     obj.setVerticleDeploymentTimeout(((Number) member.getValue()).intValue());
@@ -155,6 +160,7 @@ static void toJson(NeonBeeConfig obj, java.util.Map<String, Object> json) {
         if (obj.getTrackingDataHandlingStrategy() != null) {
             json.put("trackingDataHandlingStrategy", obj.getTrackingDataHandlingStrategy());
         }
+        json.put("useReplicatedMaps", obj.isUseReplicatedMaps());
         if (obj.getVerticleDeploymentTimeout() != null) {
             json.put("verticleDeploymentTimeout", obj.getVerticleDeploymentTimeout());
         }

src/main/java/io/neonbee/NeonBee.java

@@ -63,6 +63,7 @@
 import io.neonbee.internal.Registry;
 import io.neonbee.internal.ReplyInboundInterceptor;
 import io.neonbee.internal.SharedDataAccessor;
+import io.neonbee.internal.SharedDataAccessorFactory;
 import io.neonbee.internal.WriteSafeRegistry;
 import io.neonbee.internal.buffer.ImmutableBuffer;
 import io.neonbee.internal.cluster.ClusterHelper;
@@ -75,6 +76,7 @@
 import io.neonbee.internal.codec.ImmutableJsonObjectMessageCodec;
 import io.neonbee.internal.deploy.Deployable;
 import io.neonbee.internal.deploy.Deployables;
+import io.neonbee.internal.hazelcast.ReplicatedClusterEntityRegistry;
 import io.neonbee.internal.helper.ConfigHelper;
 import io.neonbee.internal.helper.FileSystemHelper;
 import io.neonbee.internal.job.RedeployEntitiesJob;
@@ -449,7 +451,8 @@ private Future<Void> registerHooks() {
      */
     @VisibleForTesting
     Future<Void> initializeSharedMaps() {
-        SharedDataAccessor sharedData = new SharedDataAccessor(vertx, NeonBee.class);
+        SharedDataAccessor sharedData = new SharedDataAccessorFactory(this)
+                .getSharedDataAccessor(NeonBee.class);
         sharedLocalMap = sharedData.getLocalMap(SHARED_MAP_NAME);
         return sharedData.<String, Object>getAsyncMap(SHARED_MAP_NAME).onSuccess(asyncMap -> sharedAsyncMap = asyncMap)
                 .mapEmpty();
@@ -677,7 +680,12 @@ private Future<Void> deployModules() {
         this.healthRegistry = new HealthCheckRegistry(vertx);
         this.modelManager = new EntityModelManager(this);
         if (vertx.isClustered()) {
-            this.entityRegistry = new ClusterEntityRegistry(vertx, EntityVerticle.REGISTRY_NAME);
+            if (config.isUseReplicatedMaps() && ClusterHelper.getHazelcastClusterManager(vertx).isPresent()) {
+                this.entityRegistry =
+                        new ReplicatedClusterEntityRegistry(vertx, EntityVerticle.REGISTRY_NAME);
+            } else {
+                this.entityRegistry = new ClusterEntityRegistry(vertx, EntityVerticle.REGISTRY_NAME);
+            }
         } else {
             this.entityRegistry = new WriteSafeRegistry<>(vertx, EntityVerticle.REGISTRY_NAME);
         }

src/main/java/io/neonbee/cache/CachingDataVerticle.java

@@ -28,6 +28,7 @@
 import io.neonbee.data.DataRequest;
 import io.neonbee.data.DataVerticle;
 import io.neonbee.internal.SharedDataAccessor;
+import io.neonbee.internal.SharedDataAccessorFactory;
 import io.vertx.core.Context;
 import io.vertx.core.Future;
 import io.vertx.core.Vertx;
@@ -147,7 +148,8 @@ public void init(Vertx vertx, Context context) {
 
         // we will only need to retrieve locks if we coalesce requests
         if (coalescingTimeout > 0) {
-            sharedDataAccessor = new SharedDataAccessor(vertx, getClass());
+            sharedDataAccessor = new SharedDataAccessorFactory(vertx)
+                    .getSharedDataAccessor(getClass());
         }
     }
 

src/main/java/io/neonbee/config/NeonBeeConfig.java

@@ -35,7 +35,7 @@
 
 /**
  * In contrast to the {@link NeonBeeOptions} the {@link NeonBeeConfig} is persistent configuration in a file.
- *
+ * <p>
  * Whilst the {@link NeonBeeOptions} contain information which is to specify when NeonBee starts, such as the port of
  * the server to start on and the cluster to connect to, which potentially could be different across cluster nodes, the
  * {@link NeonBeeConfig} contains information which is mostly shared across different cluster nodes or you would like to
@@ -100,6 +100,8 @@ public class NeonBeeConfig {
 
     private int jsonMaxStringSize;
 
+    private boolean useReplicatedMaps;
+
     /**
      * Are the metrics enabled?
      *
@@ -535,4 +537,38 @@ public NeonBeeConfig setJsonMaxStringSize(int jsonMaxStringSize) {
     public int getJsonMaxStringSize() {
         return jsonMaxStringSize;
     }
+
+    /**
+     * Set the value to enable, disable replicated maps.
+     * <p>
+     * <b>Currently this feature is only supported for a Hazelcast-Cluster</b>
+     * <p>
+     * Replicated maps are a distributed data structure that provides a way to replicate data across multiple nodes in a
+     * cluster. Replicated maps are useful when you need to replicate data across multiple nodes in a cluster, and you
+     * don't need to partition the data.
+     * <p>
+     *
+     * @return true if the replicated maps should be used, false otherwise
+     */
+    public boolean isUseReplicatedMaps() {
+        return useReplicatedMaps;
+    }
+
+    /**
+     * Set the value to enable, disable replicated maps.
+     * <p>
+     * <b>Currently this feature is only supported for a Hazelcast-Cluster</b>
+     * <p>
+     * Replicated maps are a distributed data structure that provides a way to replicate data across multiple nodes in a
+     * cluster. Replicated maps are useful when you need to replicate data across multiple nodes in a cluster, and you
+     * don't need to partition the data.
+     * <p>
+     *
+     * @param useReplicatedMaps true if the replicated maps should be enabled, false otherwise
+     * @return the {@linkplain NeonBeeConfig} for fluent use
+     */
+    public NeonBeeConfig setUseReplicatedMaps(boolean useReplicatedMaps) {
+        this.useReplicatedMaps = useReplicatedMaps;
+        return this;
+    }
 }

src/main/java/io/neonbee/endpoint/odatav4/ODataV4Endpoint.java

@@ -29,7 +29,7 @@
 import io.neonbee.endpoint.odatav4.internal.olingo.OlingoEndpointHandler;
 import io.neonbee.entity.EntityModel;
 import io.neonbee.internal.RegexBlockList;
-import io.neonbee.internal.SharedDataAccessor;
+import io.neonbee.internal.SharedDataAccessorFactory;
 import io.neonbee.logging.LoggingFacade;
 import io.vertx.core.Future;
 import io.vertx.core.Vertx;
@@ -201,27 +201,35 @@ public Future<Router> createEndpointRouter(Vertx vertx, String basePath, JsonObj
         // when NeonBee is started and / or in case the endpoint is not used.
         Route initialRoute = router.route();
         initialRoute.handler(
-                routingContext -> new SharedDataAccessor(vertx, ODataV4Endpoint.class).getLocalLock(asyncLock ->
-                // immediately initialize the router, this will also "arm" the event bus listener
-                (!initialized.getAndSet(true)
-                        ? refreshRouter(vertx, router, basePath, uriConversion, exposedEntities, models)
-                        : succeededFuture()).onComplete(handler -> {
-                            // wait for the refresh to finish (the result doesn't matter), remove the initial route, as
-                            // this will redirect all requests to the registered service endpoint handlers (if non have
-                            // been registered, e.g. due to a failure in model loading, it'll result in an 404). Could
-                            // have been removed already by refreshRouter, we don't care!
-                            initialRoute.remove();
-                            if (asyncLock.succeeded()) {
-                                // releasing the lock will cause other requests unblock and not call the initial route
-                                asyncLock.result().release();
-                            }
-
-                            // let the router again handle the context again, now with either all service endpoints
-                            // registered, or none in case there have been a failure while loading the models.
-                            // NOTE: Re-route is the only elegant way I found to restart the current router to take
-                            // the new routes! Might consider checking again with the Vert.x 4.0 release.
-                            routingContext.reroute(routingContext.request().uri());
-                        })));
+                routingContext -> new SharedDataAccessorFactory(vertx)
+                        .getSharedDataAccessor(ODataV4Endpoint.class)
+                        .getLocalLock(asyncLock ->
+                        // immediately initialize the router, this will also "arm" the event bus listener
+                        (!initialized.getAndSet(true)
+                                ? refreshRouter(vertx, router, basePath, uriConversion, exposedEntities, models)
+                                : succeededFuture()).onComplete(handler -> {
+                                    // wait for the refresh to finish (the result doesn't matter), remove the initial
+                                    // route, as
+                                    // this will redirect all requests to the registered service endpoint handlers (if
+                                    // non have
+                                    // been registered, e.g. due to a failure in model loading, it'll result in an 404).
+                                    // Could
+                                    // have been removed already by refreshRouter, we don't care!
+                                    initialRoute.remove();
+                                    if (asyncLock.succeeded()) {
+                                        // releasing the lock will cause other requests unblock and not call the initial
+                                        // route
+                                        asyncLock.result().release();
+                                    }
+
+                                    // let the router again handle the context again, now with either all service
+                                    // endpoints
+                                    // registered, or none in case there have been a failure while loading the models.
+                                    // NOTE: Re-route is the only elegant way I found to restart the current router to
+                                    // take
+                                    // the new routes! Might consider checking again with the Vert.x 4.0 release.
+                                    routingContext.reroute(routingContext.request().uri());
+                                })));
 
         return succeededFuture(router);
     }

src/main/java/io/neonbee/entity/EntityModelManager.java

@@ -16,7 +16,7 @@
 import com.google.common.base.Functions;
 
 import io.neonbee.NeonBee;
-import io.neonbee.internal.SharedDataAccessor;
+import io.neonbee.internal.SharedDataAccessorFactory;
 import io.neonbee.logging.LoggingFacade;
 import io.vertx.core.Future;
 import io.vertx.core.eventbus.DeliveryOptions;
@@ -147,7 +147,10 @@ public Future<Map<String, EntityModel>> getSharedModels() {
         }
 
         // if not try to reload the models and return the loaded data model
-        return new SharedDataAccessor(neonBee.getVertx(), EntityModelManager.class).getLocalLock()
+
+        return new SharedDataAccessorFactory(neonBee)
+                .getSharedDataAccessor(EntityModelManager.class)
+                .getLocalLock()
                 .transform(asyncLocalLock -> {
                     Map<String, EntityModel> retryModels = getBufferedModels();
                     if (retryModels != null) {

src/main/java/io/neonbee/internal/SharedDataAccessorFactory.java

@@ -0,0 +1,58 @@
+package io.neonbee.internal;
+
+import io.neonbee.NeonBee;
+import io.neonbee.config.NeonBeeConfig;
+import io.neonbee.internal.cluster.ClusterHelper;
+import io.neonbee.internal.hazelcast.ReplicatedDataAccessor;
+import io.vertx.core.Vertx;
+
+/**
+ * Factory to create a {@link SharedDataAccessor} based on the configuration.
+ */
+public class SharedDataAccessorFactory {
+    private final NeonBee neonBee;
+
+    /**
+     * Create a new instance of {@link SharedDataAccessorFactory}.
+     */
+    public SharedDataAccessorFactory() {
+        this.neonBee = NeonBee.get();
+    }
+
+    /**
+     * Create a new instance of {@link SharedDataAccessorFactory}.
+     *
+     * @param vertx the Vert.x instance
+     */
+    public SharedDataAccessorFactory(Vertx vertx) {
+        this.neonBee = NeonBee.get(vertx);
+    }
+
+    /**
+     * Create a new instance of {@link SharedDataAccessorFactory}.
+     *
+     * @param neonBee the NeonBee instance
+     */
+    public SharedDataAccessorFactory(NeonBee neonBee) {
+        this.neonBee = neonBee;
+    }
+
+    private boolean useHazelcastReplicatedMaps() {
+        NeonBeeConfig config = neonBee.getConfig();
+        return config.isUseReplicatedMaps() && ClusterHelper.getHazelcastClusterManager(neonBee.getVertx()).isPresent();
+    }
+
+    /**
+     * Get a {@link SharedDataAccessor} based on the configuration.
+     *
+     * @param accessClass the class to access the shared data
+     * @return the shared data accessor
+     */
+    public SharedDataAccessor getSharedDataAccessor(Class<?> accessClass) {
+        if (useHazelcastReplicatedMaps()) {
+            return new ReplicatedDataAccessor(neonBee.getVertx(), accessClass);
+        } else {
+            return new SharedDataAccessor(neonBee.getVertx(), accessClass);
+        }
+    }
+}

src/main/java/io/neonbee/internal/WriteSafeRegistry.java

@@ -26,15 +26,25 @@ public class WriteSafeRegistry<T> implements Registry<T> {
 
     private final String registryName;
 
+    /**
+     * Create a new {@link WriteSafeRegistry}.
+     *
+     * @param registryName       the name of the map registry
+     * @param sharedDataAccessor the shared data accessor
+     */
+    protected WriteSafeRegistry(String registryName, SharedDataAccessor sharedDataAccessor) {
+        this.registryName = registryName;
+        this.sharedDataAccessor = sharedDataAccessor;
+    }
+
     /**
      * Create a new {@link WriteSafeRegistry}.
      *
      * @param vertx        the {@link Vertx} instance
      * @param registryName the name of the map registry
      */
     public WriteSafeRegistry(Vertx vertx, String registryName) {
-        this.registryName = registryName;
-        this.sharedDataAccessor = new SharedDataAccessor(vertx, this.getClass());
+        this(registryName, new SharedDataAccessor(vertx, WriteSafeRegistry.class));
     }
 
     /**

src/main/java/io/neonbee/internal/cluster/entity/ClusterEntityRegistry.java

@@ -48,16 +48,32 @@ public class ClusterEntityRegistry implements Registry<String> {
 
     private final WriteSafeRegistry<Object> entityRegistry;
 
+    /**
+     * Create a new instance of {@link ClusterEntityRegistry}.
+     *
+     * @param vertx                 the {@link Vertx} instance
+     * @param entityRegistry        the entity registry
+     * @param clusteringInformation the clustering information registry
+     */
+    protected ClusterEntityRegistry(
+            Vertx vertx,
+            WriteSafeRegistry<Object> entityRegistry,
+            WriteSafeRegistry<JsonObject> clusteringInformation) {
+        this.entityRegistry = entityRegistry;
+        this.clusteringInformation = clusteringInformation;
+        this.vertx = vertx;
+    }
+
     /**
      * Create a new instance of {@link ClusterEntityRegistry}.
      *
      * @param vertx        the {@link Vertx} instance
      * @param registryName the name of the map registry
      */
     public ClusterEntityRegistry(Vertx vertx, String registryName) {
-        this.entityRegistry = new WriteSafeRegistry<>(vertx, registryName);
-        this.clusteringInformation = new WriteSafeRegistry<>(vertx, registryName + "#ClusteringInformation");
-        this.vertx = vertx;
+        this(vertx,
+                new WriteSafeRegistry<>(vertx, registryName),
+                new WriteSafeRegistry<>(vertx, registryName + "#ClusteringInformation"));
     }
 
     @VisibleForTesting