--- /dev/null
+/*
+ * Copyright (C) 2014 Red Hat, Inc.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.networkconfig.neutron;
+
+/**
+ * This interface defines the methods a service that wishes to be aware of Firewall Rules needs to implement
+ *
+ */
+
+public interface INeutronFirewallAware {
+
+ /**
+ * Services provide this interface method to indicate if the specified firewall can be created
+ *
+ * @param firewall
+ * instance of proposed new Firewall object
+ * @return integer
+ * the return value is understood to be a HTTP status code. A return value outside of 200 through 299
+ * results in the create operation being interrupted and the returned status value reflected in the
+ * HTTP response.
+ */
+ public int canCreateNeutronFirewall(NeutronFirewall firewall);
+
+ /**
+ * Services provide this interface method for taking action after a firewall has been created
+ *
+ * @param firewall
+ * instance of new Firewall object
+ * @return void
+ */
+ public void neutronFirewallCreated(NeutronFirewall firewall);
+
+ /**
+ * Services provide this interface method to indicate if the specified firewall can be changed using the specified
+ * delta
+ *
+ * @param delta
+ * updates to the firewall object using patch semantics
+ * @param original
+ * instance of the Firewall object to be updated
+ * @return integer
+ * the return value is understood to be a HTTP status code. A return value outside of 200 through 299
+ * results in the update operation being interrupted and the returned status value reflected in the
+ * HTTP response.
+ */
+ public int canUpdateNeutronFirewall(NeutronFirewall delta, NeutronFirewall original);
+
+ /**
+ * Services provide this interface method for taking action after a firewall has been updated
+ *
+ * @param firewall
+ * instance of modified Firewall object
+ * @return void
+ */
+ public void neutronFirewallUpdated(NeutronFirewall firewall);
+
+ /**
+ * Services provide this interface method to indicate if the specified firewall can be deleted
+ *
+ * @param firewall
+ * instance of the Firewall object to be deleted
+ * @return integer
+ * the return value is understood to be a HTTP status code. A return value outside of 200 through 299
+ * results in the delete operation being interrupted and the returned status value reflected in the
+ * HTTP response.
+ */
+ public int canDeleteNeutronFirewall(NeutronFirewall firewall);
+
+ /**
+ * Services provide this interface method for taking action after a firewall has been deleted
+ *
+ * @param firewall
+ * instance of deleted Firewall object
+ * @return void
+ */
+ public void neutronFirewallDeleted(NeutronFirewall firewall);
+}