Add log message about Vert.x at start up

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

@@ -32,6 +32,10 @@ public interface Log extends BasicLogger {
 	@Message(id = 1, value = "Hibernate Reactive")
 	void startHibernateReactive();
 
+	@LogMessage(level = INFO)
+	@Message(id = 2, value = "Vert.x not detected, creating a new instance")
+	void creatingVertxInstance();
+
 	@LogMessage(level = INFO)
 	@Message(id = 11, value = "SQL Client URL [%1$s]")
 	void sqlClientUrl(String url);

hibernate-reactive-core/src/main/java/org/hibernate/reactive/vertx/impl/DefaultVertxInstance.java

@@ -21,39 +21,43 @@
  * demand and destroyed automatically along with the Hibernate
  * {@link org.hibernate.SessionFactory#close() session factory}.
  *
- * @see ProvidedVertxInstance if you need to a different instance
- *
  * @author Sanne Grinovero <sanne@hibernate.org>
+ * @see ProvidedVertxInstance if you need to a different instance
  */
 public final class DefaultVertxInstance implements VertxInstance, Stoppable, Startable {
 
-    private static final Log LOG = LoggerFactory.make( Log.class, MethodHandles.lookup() );
-
-    private Vertx vertx;
-    private boolean vertxCreator;
-
-    @Override
-    public Vertx getVertx() {
-        if ( vertx == null ) {
-            throw LOG.serviceNotInitialized();
-        }
-        return vertx;
-    }
-
-    @Override
-    public void stop() {
-        if ( vertxCreator && vertx != null ) {
-            vertx.close().toCompletionStage().toCompletableFuture().join();
-        }
-    }
-
-    @Override
-    public void start() {
-        final Context context = Vertx.currentContext();
-        vertxCreator = context == null || context.owner() == null;
-        vertx = vertxCreator
-                ? Vertx.vertx() // Create a new one
-                : context.owner(); // Get the existing one
-    }
+	private static final Log LOG = LoggerFactory.make( Log.class, MethodHandles.lookup() );
+
+	private Vertx vertx;
+	private boolean vertxCreator;
+
+	@Override
+	public Vertx getVertx() {
+		if ( vertx == null ) {
+			throw LOG.serviceNotInitialized();
+		}
+		return vertx;
+	}
+
+	@Override
+	public void stop() {
+		if ( vertxCreator && vertx != null ) {
+			vertx.close().toCompletionStage().toCompletableFuture().join();
+		}
+	}
+
+	@Override
+	public void start() {
+		final Context context = Vertx.currentContext();
+		vertxCreator = context == null || context.owner() == null;
+		if ( vertxCreator ) {
+			LOG.creatingVertxInstance();
+			vertx = Vertx.vertx();
+		}
+		else {
+			LOG.debugf( "Vert.x instance detected" );
+			vertx = context.owner();
+		}
+	}
 
 }