| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * 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.store.service; |
| |
| import org.onosproject.store.Timestamp; |
| |
| /** |
| * Clock service that can generate timestamps based off of two input objects. |
| * Implementations are free to only take one or none of the objects into account |
| * when generating timestamps. |
| */ |
| public interface ClockService<T, U> { |
| |
| /** |
| * Gets a new timestamp for the given objects. |
| * |
| * @param object1 First object to use when generating timestamps |
| * @param object2 Second object to use when generating timestamps |
| * @return the new timestamp |
| */ |
| Timestamp getTimestamp(T object1, U object2); |
| } |