From 90cf04f2ac1066b2b6a012432ec42a467fe42392 Mon Sep 17 00:00:00 2001 From: Jorge Hernandez Date: Mon, 19 Feb 2018 10:16:02 -0600 Subject: interception of facts before injection Added interceptor to drools controller, post-decoding and pre/after injection into kie sessions. The decoded object is passed as is. The set of hooks will be expanded in the future. This is added in the context of logging for POLICY-558 to track control loop transactions, per logging requirements. The idea is that VirtualControlLoopNotifications on the drools-applications area will use it to track control loop transactions, times, etc .. to satisfy logging requirements. This approach also reliefs the drools applications logic, (.drl) for dealing with this. The logic therefore will be isolated into a single feature. Change-Id: Idf840c528e6175be4aaee3bf114091c203b37bc8 Issue-ID: POLICY-558 Signed-off-by: Jorge Hernandez --- .../features/DroolsControllerFeatureAPI.java | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 policy-management/src/main/java/org/onap/policy/drools/features/DroolsControllerFeatureAPI.java (limited to 'policy-management/src/main/java/org/onap/policy/drools/features') diff --git a/policy-management/src/main/java/org/onap/policy/drools/features/DroolsControllerFeatureAPI.java b/policy-management/src/main/java/org/onap/policy/drools/features/DroolsControllerFeatureAPI.java new file mode 100644 index 00000000..dbcdb943 --- /dev/null +++ b/policy-management/src/main/java/org/onap/policy/drools/features/DroolsControllerFeatureAPI.java @@ -0,0 +1,56 @@ +/*- + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * 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.policy.drools.features; + +import org.onap.policy.drools.controller.DroolsController; +import org.onap.policy.drools.utils.OrderedService; +import org.onap.policy.drools.utils.OrderedServiceImpl; + +/** + * Drools Controller Feature API. Hooks into the Drools Controller operations. + */ +public interface DroolsControllerFeatureAPI extends OrderedService { + + /** + * intercepts before the Drools Controller gives the Policy Container a fact to + * insert into its Policy Sessions + * + * @return true if this feature intercepts and takes ownership + * of the operation preventing the invocation of + * lower priority features. False, otherwise. + */ + default boolean beforeInsert(DroolsController controller, Object fact) {return false;} + + /** + * called after a fact is injected into the Policy Container + * + * @return true if this feature intercepts and takes ownership + * of the operation preventing the invocation of + * lower priority features. False, otherwise. + */ + default boolean afterInsert(DroolsController controller, Object fact, boolean successInsert) {return false;} + + /** + * Feature providers implementing this interface + */ + public static final OrderedServiceImpl providers = + new OrderedServiceImpl(DroolsControllerFeatureAPI.class); +} -- cgit 1.2.3-korg