| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * 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.onosproject.openstacknetworking.api; |
| |
| /** |
| * Handles precommit request. |
| */ |
| public interface PreCommitService<T, E, S> { |
| |
| /** |
| * Subscribes pre-update event for the given subject inside the given class. |
| * |
| * @param subject subject to subscribe |
| * @param eventType event type (update or remove) |
| * @param className target class name |
| */ |
| void subscribePreCommit(T subject, E eventType, String className); |
| |
| /** |
| * Unsubscribes pre-update event for the given subject inside the given class. |
| * |
| * @param subject subject to unsubscribe |
| * @param eventType event type (update or remove) |
| * @param service service instance |
| * @param className target class name |
| */ |
| void unsubscribePreCommit(T subject, E eventType, S service, String className); |
| |
| /** |
| * Obtains the count value of subscribers for the given subject and event type. |
| * |
| * @param subject subject to subscribe |
| * @param eventType event type (update or remove) |
| * @return subscriber count |
| */ |
| int subscriberCountByEventType(T subject, E eventType); |
| |
| /** |
| * Obtains the count value of subscribers for the given subject. |
| * |
| * @param subject subject to subscribe |
| * @return subscriber count |
| */ |
| int subscriberCount(T subject); |
| } |