--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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.
+ *
+ * ============LICENSE_END=========================================================
+ */
+
+
+
+package org.onap.appc.pool;
+
+import java.io.Closeable;
+
+/**
+ * @param <T>
+ * The generic type we are caching
+ */
+
+public interface Destructor<T extends Closeable> {
+
+ /**
+ * Called to destroy the object when it is no longer being used by the pool
+ *
+ * @param obj
+ * The object to be destroyed
+ * @param pool
+ * The pool that the object is being removed from
+ */
+ void destroy(T obj, Pool<T> pool);
+}