log the HR version

hibernate-reactive-core/src/main/java/org/hibernate/reactive/logging/impl/Log.java

@@ -32,8 +32,8 @@
 public interface Log extends BasicLogger {
 
 	@LogMessage(level = INFO)
-	@Message(id = 1, value = "Hibernate Reactive")
-	void startHibernateReactive();
+	@Message(id = 1, value = "Hibernate Reactive version %s")
+	void startHibernateReactive(String version);
 
 	@LogMessage(level = INFO)
 	@Message(id = 2, value = "Vert.x not detected, creating a new instance")

hibernate-reactive-core/src/main/java/org/hibernate/reactive/logging/impl/Version.java

@@ -0,0 +1,32 @@
+/* Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright: Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.reactive.logging.impl;
+
+/**
+ * Information about the version of Hibernate Reactive.
+ *
+ * @author Steve Ebersole
+ */
+public final class Version {
+
+	private static final String VERSION;
+	static {
+		final String version = Version.class.getPackage().getImplementationVersion();
+		VERSION = version != null ? version : "[WORKING]";
+	}
+
+	private Version() {
+	}
+
+	/**
+	 * Access to the Hibernate Reactive version.
+	 *
+	 * @return The version
+	 */
+	public static String getVersionString() {
+		return VERSION;
+	}
+}

hibernate-reactive-core/src/main/java/org/hibernate/reactive/provider/impl/ReactiveIntegrator.java

@@ -28,6 +28,7 @@
 import org.hibernate.reactive.event.impl.DefaultReactiveResolveNaturalIdEventListener;
 import org.hibernate.reactive.logging.impl.Log;
 import org.hibernate.reactive.logging.impl.LoggerFactory;
+import org.hibernate.reactive.logging.impl.Version;
 import org.hibernate.service.ServiceRegistry;
 import org.hibernate.service.spi.SessionFactoryServiceRegistry;
 
@@ -54,7 +55,7 @@ public void disintegrate(SessionFactoryImplementor sessionFactory, SessionFactor
 
 	private void attachEventContextManagingListenersIfRequired(ServiceRegistry serviceRegistry) {
 		if ( ReactiveModeCheck.isReactiveRegistry( serviceRegistry ) ) {
-			LOG.startHibernateReactive();
+			LOG.startHibernateReactive( Version.getVersionString() );
 
 			EventListenerRegistry eventListenerRegistry = serviceRegistry.getService( EventListenerRegistry.class );
 			eventListenerRegistry.addDuplicationStrategy( ReplacementDuplicationStrategy.INSTANCE );