Jonathan Hart | 5ec32ba | 2015-02-05 13:33:58 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.store.intent.impl; |
| 17 | |
| 18 | import org.onosproject.net.intent.IntentData; |
| 19 | import org.onosproject.store.Timestamp; |
| 20 | import org.onosproject.store.impl.ClockService; |
| 21 | import org.onosproject.store.impl.MultiValuedTimestamp; |
| 22 | |
| 23 | import java.util.concurrent.atomic.AtomicLong; |
| 24 | |
| 25 | /** |
| 26 | * ClockService that generates logical timestamps based on IntentData versions. |
| 27 | */ |
| 28 | public class IntentDataLogicalClockManager<K> implements ClockService<K, IntentData> { |
| 29 | |
| 30 | private final AtomicLong sequenceNumber = new AtomicLong(0); |
| 31 | |
| 32 | @Override |
| 33 | public Timestamp getTimestamp(K key, IntentData intentData) { |
| 34 | return new MultiValuedTimestamp(intentData.version(), sequenceNumber.getAndIncrement()); |
| 35 | } |
| 36 | } |