Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [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 | |
| 17 | package org.onosproject.store.consistent.impl; |
| 18 | |
| 19 | import java.util.Collection; |
| 20 | import java.util.Map.Entry; |
| 21 | import java.util.concurrent.CompletableFuture; |
| 22 | import java.util.concurrent.ExecutionException; |
| 23 | import java.util.concurrent.TimeUnit; |
| 24 | import java.util.concurrent.TimeoutException; |
| 25 | import java.util.Set; |
| 26 | |
| 27 | import org.onosproject.store.service.AsyncConsistentMap; |
| 28 | import org.onosproject.store.service.ConsistentMap; |
| 29 | import org.onosproject.store.service.ConsistentMapException; |
| 30 | import org.onosproject.store.service.Serializer; |
| 31 | import org.onosproject.store.service.Versioned; |
| 32 | |
| 33 | /** |
| 34 | * ConsistentMap implementation that is backed by a Raft consensus |
| 35 | * based database. |
| 36 | * |
| 37 | * @param <K> type of key. |
| 38 | * @param <V> type of value. |
| 39 | */ |
| 40 | public class DefaultConsistentMap<K, V> implements ConsistentMap<K, V> { |
| 41 | |
| 42 | private static final int OPERATION_TIMEOUT_MILLIS = 5000; |
| 43 | |
| 44 | private final AsyncConsistentMap<K, V> asyncMap; |
| 45 | |
| 46 | public DefaultConsistentMap(String name, |
| 47 | DatabaseProxy<String, byte[]> proxy, |
| 48 | Serializer serializer) { |
| 49 | asyncMap = new DefaultAsyncConsistentMap<>(name, proxy, serializer); |
| 50 | } |
| 51 | |
| 52 | @Override |
| 53 | public int size() { |
| 54 | return complete(asyncMap.size()); |
| 55 | } |
| 56 | |
| 57 | @Override |
| 58 | public boolean isEmpty() { |
| 59 | return complete(asyncMap.isEmpty()); |
| 60 | } |
| 61 | |
| 62 | @Override |
| 63 | public boolean containsKey(K key) { |
| 64 | return complete(asyncMap.containsKey(key)); |
| 65 | } |
| 66 | |
| 67 | @Override |
| 68 | public boolean containsValue(V value) { |
| 69 | return complete(asyncMap.containsValue(value)); |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | public Versioned<V> get(K key) { |
| 74 | return complete(asyncMap.get(key)); |
| 75 | } |
| 76 | |
| 77 | @Override |
| 78 | public Versioned<V> put(K key, V value) { |
| 79 | return complete(asyncMap.put(key, value)); |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public Versioned<V> remove(K key) { |
| 84 | return complete(asyncMap.remove(key)); |
| 85 | } |
| 86 | |
| 87 | @Override |
| 88 | public void clear() { |
| 89 | complete(asyncMap.clear()); |
| 90 | } |
| 91 | |
| 92 | @Override |
| 93 | public Set<K> keySet() { |
| 94 | return complete(asyncMap.keySet()); |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | public Collection<Versioned<V>> values() { |
| 99 | return complete(asyncMap.values()); |
| 100 | } |
| 101 | |
| 102 | @Override |
| 103 | public Set<Entry<K, Versioned<V>>> entrySet() { |
| 104 | return complete(asyncMap.entrySet()); |
| 105 | } |
| 106 | |
| 107 | @Override |
| 108 | public Versioned<V> putIfAbsent(K key, V value) { |
| 109 | return complete(asyncMap.putIfAbsent(key, value)); |
| 110 | } |
| 111 | |
| 112 | @Override |
| 113 | public boolean remove(K key, V value) { |
| 114 | return complete(asyncMap.remove(key, value)); |
| 115 | } |
| 116 | |
| 117 | @Override |
| 118 | public boolean remove(K key, long version) { |
| 119 | return complete(asyncMap.remove(key, version)); |
| 120 | } |
| 121 | |
| 122 | @Override |
| 123 | public boolean replace(K key, V oldValue, V newValue) { |
| 124 | return complete(asyncMap.replace(key, oldValue, newValue)); |
| 125 | } |
| 126 | |
| 127 | @Override |
| 128 | public boolean replace(K key, long oldVersion, V newValue) { |
| 129 | return complete(asyncMap.replace(key, oldVersion, newValue)); |
| 130 | } |
| 131 | |
| 132 | private static <T> T complete(CompletableFuture<T> future) { |
| 133 | try { |
| 134 | return future.get(OPERATION_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS); |
| 135 | } catch (InterruptedException e) { |
| 136 | Thread.currentThread().interrupt(); |
| 137 | throw new ConsistentMapException.Interrupted(); |
| 138 | } catch (TimeoutException e) { |
| 139 | throw new ConsistentMapException.Timeout(); |
| 140 | } catch (ExecutionException e) { |
| 141 | throw new ConsistentMapException(e.getCause()); |
| 142 | } |
| 143 | } |
| 144 | } |