[ELY-1996] Add new interface indicating active sessions of an SSLContext

auth/client/src/main/java/org/wildfly/security/auth/client/ActiveSessionsSSLContext.java

@@ -0,0 +1,33 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2024 Red Hat, Inc., and individual contributors
+ * as indicated by the @author tags.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.wildfly.security.auth.client;
+
+/**
+ * An interface indicating active sessions of an SSLContext
+ */
+public interface ActiveSessionsSSLContext {
+    /**
+     * Indicates if the SSLContext has active sessions.
+     *
+     * @return true if SSLContext has active sessions. Otherwise, false
+     */
+    default boolean hasActiveSessions() {
+        return false;
+    }
+}

dynamic-ssl/src/main/java/org/wildfly/security/dynamic/ssl/DynamicSSLContext.java

@@ -17,6 +17,8 @@
  */
 package org.wildfly.security.dynamic.ssl;
 
+import org.wildfly.security.auth.client.ActiveSessionsSSLContext;
+
 import javax.net.ssl.SSLContext;
 import java.security.NoSuchAlgorithmException;
 
@@ -25,7 +27,7 @@
  *
  * @author <a href="mailto:dvilkola@redhat.com">Diana Krepinska</a>
  */
-public final class DynamicSSLContext extends SSLContext {
+public final class DynamicSSLContext extends SSLContext implements ActiveSessionsSSLContext {
 
     private static SSLContext resolverSSLContext(DynamicSSLContextSPI dynamicSSLContextSPIImpl) throws NoSuchAlgorithmException, DynamicSSLContextException {
         return dynamicSSLContextSPIImpl.getConfiguredDefault() == null ?