Jordan Halterman | 948d659 | 2017-04-20 17:18:24 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2017-present Open Networking Foundation |
Jordan Halterman | 948d659 | 2017-04-20 17:18:24 -0700 | [diff] [blame] | 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.primitives.impl; |
| 17 | |
| 18 | import java.util.Collection; |
| 19 | import java.util.Map; |
| 20 | |
| 21 | import com.google.common.base.MoreObjects; |
| 22 | import org.onosproject.cluster.PartitionId; |
| 23 | import org.onosproject.store.service.TransactionalMap; |
| 24 | |
| 25 | /** |
| 26 | * Partitioned transactional map. |
| 27 | */ |
| 28 | public class PartitionedTransactionalMap<K, V> implements TransactionalMap<K, V> { |
| 29 | protected final Map<PartitionId, TransactionalMapParticipant<K, V>> partitions; |
| 30 | protected final Hasher<K> hasher; |
| 31 | |
| 32 | public PartitionedTransactionalMap( |
| 33 | Map<PartitionId, TransactionalMapParticipant<K, V>> partitions, Hasher<K> hasher) { |
| 34 | this.partitions = partitions; |
| 35 | this.hasher = hasher; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Returns the collection of map partitions. |
| 40 | * |
| 41 | * @return a collection of map partitions |
| 42 | */ |
| 43 | @SuppressWarnings("unchecked") |
| 44 | Collection<TransactionParticipant> participants() { |
| 45 | return (Collection) partitions.values(); |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Returns the partition for the given key. |
| 50 | * |
| 51 | * @param key the key for which to return the partition |
| 52 | * @return the partition for the given key |
| 53 | */ |
| 54 | private TransactionalMap<K, V> partition(K key) { |
| 55 | return partitions.get(hasher.hash(key)); |
| 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public V get(K key) { |
| 60 | return partition(key).get(key); |
| 61 | } |
| 62 | |
| 63 | @Override |
| 64 | public boolean containsKey(K key) { |
| 65 | return partition(key).containsKey(key); |
| 66 | } |
| 67 | |
| 68 | @Override |
| 69 | public V put(K key, V value) { |
| 70 | return partition(key).put(key, value); |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public V remove(K key) { |
| 75 | return partition(key).remove(key); |
| 76 | } |
| 77 | |
| 78 | @Override |
| 79 | public V putIfAbsent(K key, V value) { |
| 80 | return partition(key).putIfAbsent(key, value); |
| 81 | } |
| 82 | |
| 83 | @Override |
| 84 | public boolean remove(K key, V value) { |
| 85 | return partition(key).remove(key, value); |
| 86 | } |
| 87 | |
| 88 | @Override |
| 89 | public boolean replace(K key, V oldValue, V newValue) { |
| 90 | return partition(key).replace(key, oldValue, newValue); |
| 91 | } |
| 92 | |
| 93 | @Override |
| 94 | public String toString() { |
| 95 | return MoreObjects.toStringHelper(this) |
| 96 | .add("partitions", partitions.values()) |
| 97 | .toString(); |
| 98 | } |
| 99 | } |