Madan Jampani | 2546111 | 2015-02-17 14:17:29 -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 | |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 17 | package org.onosproject.store.consistent.impl; |
| 18 | |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 19 | import net.kuujo.copycat.state.StateMachine; |
| 20 | import net.kuujo.copycat.resource.internal.AbstractResource; |
Madan Jampani | ed1b7fc | 2015-04-27 23:30:07 -0700 | [diff] [blame] | 21 | import net.kuujo.copycat.resource.internal.ResourceManager; |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 22 | import net.kuujo.copycat.state.internal.DefaultStateMachine; |
| 23 | import net.kuujo.copycat.util.concurrent.Futures; |
Madan Jampani | 648451f | 2015-07-21 22:09:05 -0700 | [diff] [blame] | 24 | import net.kuujo.copycat.util.function.TriConsumer; |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 25 | |
| 26 | import java.util.Collection; |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 27 | import java.util.Map; |
| 28 | import java.util.Set; |
| 29 | import java.util.concurrent.CompletableFuture; |
Madan Jampani | 648451f | 2015-07-21 22:09:05 -0700 | [diff] [blame] | 30 | import java.util.function.Consumer; |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 31 | import java.util.function.Supplier; |
| 32 | |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 33 | import org.onosproject.store.service.Transaction; |
Madan Jampani | 393e0f0 | 2015-02-12 07:35:39 +0530 | [diff] [blame] | 34 | import org.onosproject.store.service.Versioned; |
| 35 | |
Madan Jampani | 648451f | 2015-07-21 22:09:05 -0700 | [diff] [blame] | 36 | import com.google.common.collect.Sets; |
| 37 | |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 38 | /** |
| 39 | * Default database. |
| 40 | */ |
| 41 | public class DefaultDatabase extends AbstractResource<Database> implements Database { |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 42 | private final StateMachine<DatabaseState<String, byte[]>> stateMachine; |
| 43 | private DatabaseProxy<String, byte[]> proxy; |
Madan Jampani | 648451f | 2015-07-21 22:09:05 -0700 | [diff] [blame] | 44 | private final Set<Consumer<StateMachineUpdate>> consumers = Sets.newCopyOnWriteArraySet(); |
| 45 | private final TriConsumer<String, Object, Object> watcher = new InternalStateMachineWatcher(); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 46 | |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 47 | @SuppressWarnings({ "unchecked", "rawtypes" }) |
Madan Jampani | ed1b7fc | 2015-04-27 23:30:07 -0700 | [diff] [blame] | 48 | public DefaultDatabase(ResourceManager context) { |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 49 | super(context); |
Madan Jampani | 40537ca | 2015-07-14 19:50:33 -0700 | [diff] [blame] | 50 | this.stateMachine = new DefaultStateMachine(context, |
| 51 | DatabaseState.class, |
| 52 | DefaultDatabaseState.class, |
| 53 | DefaultDatabase.class.getClassLoader()); |
Madan Jampani | 648451f | 2015-07-21 22:09:05 -0700 | [diff] [blame] | 54 | this.stateMachine.addStartupTask(() -> { |
| 55 | stateMachine.registerWatcher(watcher); |
| 56 | return CompletableFuture.completedFuture(null); |
| 57 | }); |
| 58 | this.stateMachine.addShutdownTask(() -> { |
| 59 | stateMachine.unregisterWatcher(watcher); |
| 60 | return CompletableFuture.completedFuture(null); |
| 61 | }); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 62 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 63 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 64 | /** |
| 65 | * If the database is closed, returning a failed CompletableFuture. Otherwise, calls the given supplier to |
| 66 | * return the completed future result. |
| 67 | * |
| 68 | * @param supplier The supplier to call if the database is open. |
| 69 | * @param <T> The future result type. |
| 70 | * @return A completable future that if this database is closed is immediately failed. |
| 71 | */ |
| 72 | protected <T> CompletableFuture<T> checkOpen(Supplier<CompletableFuture<T>> supplier) { |
| 73 | if (proxy == null) { |
| 74 | return Futures.exceptionalFuture(new IllegalStateException("Database closed")); |
| 75 | } |
| 76 | return supplier.get(); |
| 77 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 78 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 79 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 80 | public CompletableFuture<Set<String>> maps() { |
| 81 | return checkOpen(() -> proxy.maps()); |
Madan Jampani | a89f8f9 | 2015-04-01 14:39:54 -0700 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | @Override |
Madan Jampani | b5d72d5 | 2015-04-03 16:53:50 -0700 | [diff] [blame] | 85 | public CompletableFuture<Map<String, Long>> counters() { |
| 86 | return checkOpen(() -> proxy.counters()); |
| 87 | } |
| 88 | |
| 89 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 90 | public CompletableFuture<Integer> mapSize(String mapName) { |
| 91 | return checkOpen(() -> proxy.mapSize(mapName)); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 92 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 93 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 94 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 95 | public CompletableFuture<Boolean> mapIsEmpty(String mapName) { |
| 96 | return checkOpen(() -> proxy.mapIsEmpty(mapName)); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 97 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 98 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 99 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 100 | public CompletableFuture<Boolean> mapContainsKey(String mapName, String key) { |
| 101 | return checkOpen(() -> proxy.mapContainsKey(mapName, key)); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 102 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 103 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 104 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 105 | public CompletableFuture<Boolean> mapContainsValue(String mapName, byte[] value) { |
| 106 | return checkOpen(() -> proxy.mapContainsValue(mapName, value)); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 107 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 108 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 109 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 110 | public CompletableFuture<Versioned<byte[]>> mapGet(String mapName, String key) { |
| 111 | return checkOpen(() -> proxy.mapGet(mapName, key)); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 112 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 113 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 114 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 115 | public CompletableFuture<Result<UpdateResult<String, byte[]>>> mapUpdate( |
| 116 | String mapName, String key, Match<byte[]> valueMatch, Match<Long> versionMatch, byte[] value) { |
| 117 | return checkOpen(() -> proxy.mapUpdate(mapName, key, valueMatch, versionMatch, value)); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 118 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 119 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 120 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 121 | public CompletableFuture<Result<Void>> mapClear(String mapName) { |
| 122 | return checkOpen(() -> proxy.mapClear(mapName)); |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 126 | public CompletableFuture<Set<String>> mapKeySet(String mapName) { |
| 127 | return checkOpen(() -> proxy.mapKeySet(mapName)); |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 131 | public CompletableFuture<Collection<Versioned<byte[]>>> mapValues(String mapName) { |
| 132 | return checkOpen(() -> proxy.mapValues(mapName)); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 133 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 134 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 135 | @Override |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 136 | public CompletableFuture<Set<Map.Entry<String, Versioned<byte[]>>>> mapEntrySet(String mapName) { |
| 137 | return checkOpen(() -> proxy.mapEntrySet(mapName)); |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | @Override |
Madan Jampani | 04aeb45 | 2015-05-02 16:12:24 -0700 | [diff] [blame] | 141 | public CompletableFuture<Long> counterGet(String counterName) { |
| 142 | return checkOpen(() -> proxy.counterGet(counterName)); |
Madan Jampani | b5d72d5 | 2015-04-03 16:53:50 -0700 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | @Override |
Madan Jampani | 04aeb45 | 2015-05-02 16:12:24 -0700 | [diff] [blame] | 146 | public CompletableFuture<Long> counterAddAndGet(String counterName, long delta) { |
| 147 | return checkOpen(() -> proxy.counterAddAndGet(counterName, delta)); |
| 148 | } |
| 149 | |
| 150 | @Override |
| 151 | public CompletableFuture<Long> counterGetAndAdd(String counterName, long delta) { |
| 152 | return checkOpen(() -> proxy.counterGetAndAdd(counterName, delta)); |
Madan Jampani | b5d72d5 | 2015-04-03 16:53:50 -0700 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | @Override |
Madan Jampani | 63c659f | 2015-06-11 00:52:58 -0700 | [diff] [blame] | 156 | public CompletableFuture<Long> queueSize(String queueName) { |
| 157 | return checkOpen(() -> proxy.queueSize(queueName)); |
| 158 | } |
| 159 | |
| 160 | @Override |
Madan Jampani | a6d787b | 2015-08-11 11:02:02 -0700 | [diff] [blame] | 161 | public CompletableFuture<Void> queuePush(String queueName, byte[] entry) { |
Madan Jampani | 63c659f | 2015-06-11 00:52:58 -0700 | [diff] [blame] | 162 | return checkOpen(() -> proxy.queuePush(queueName, entry)); |
| 163 | } |
| 164 | |
| 165 | @Override |
Madan Jampani | a6d787b | 2015-08-11 11:02:02 -0700 | [diff] [blame] | 166 | public CompletableFuture<byte[]> queuePop(String queueName) { |
| 167 | return checkOpen(() -> proxy.queuePop(queueName)); |
Madan Jampani | 63c659f | 2015-06-11 00:52:58 -0700 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | @Override |
| 171 | public CompletableFuture<byte[]> queuePeek(String queueName) { |
| 172 | return checkOpen(() -> proxy.queuePeek(queueName)); |
| 173 | } |
| 174 | |
| 175 | @Override |
Madan Jampani | bab51a4 | 2015-08-10 13:53:35 -0700 | [diff] [blame] | 176 | public CompletableFuture<CommitResponse> prepareAndCommit(Transaction transaction) { |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 177 | return checkOpen(() -> proxy.prepareAndCommit(transaction)); |
| 178 | } |
| 179 | |
| 180 | @Override |
| 181 | public CompletableFuture<Boolean> prepare(Transaction transaction) { |
| 182 | return checkOpen(() -> proxy.prepare(transaction)); |
| 183 | } |
| 184 | |
| 185 | @Override |
Madan Jampani | bab51a4 | 2015-08-10 13:53:35 -0700 | [diff] [blame] | 186 | public CompletableFuture<CommitResponse> commit(Transaction transaction) { |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 187 | return checkOpen(() -> proxy.commit(transaction)); |
| 188 | } |
| 189 | |
| 190 | @Override |
| 191 | public CompletableFuture<Boolean> rollback(Transaction transaction) { |
| 192 | return checkOpen(() -> proxy.rollback(transaction)); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 193 | } |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 194 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 195 | @Override |
| 196 | @SuppressWarnings("unchecked") |
| 197 | public synchronized CompletableFuture<Database> open() { |
| 198 | return runStartupTasks() |
| 199 | .thenCompose(v -> stateMachine.open()) |
| 200 | .thenRun(() -> { |
| 201 | this.proxy = stateMachine.createProxy(DatabaseProxy.class, this.getClass().getClassLoader()); |
| 202 | }) |
| 203 | .thenApply(v -> null); |
| 204 | } |
| 205 | |
| 206 | @Override |
| 207 | public synchronized CompletableFuture<Void> close() { |
| 208 | proxy = null; |
| 209 | return stateMachine.close() |
| 210 | .thenCompose(v -> runShutdownTasks()); |
| 211 | } |
| 212 | |
| 213 | @Override |
| 214 | public int hashCode() { |
| 215 | return name().hashCode(); |
| 216 | } |
| 217 | |
| 218 | @Override |
| 219 | public boolean equals(Object other) { |
| 220 | if (other instanceof Database) { |
| 221 | return name().equals(((Database) other).name()); |
| 222 | } |
| 223 | return false; |
| 224 | } |
Madan Jampani | 648451f | 2015-07-21 22:09:05 -0700 | [diff] [blame] | 225 | |
| 226 | @Override |
| 227 | public void registerConsumer(Consumer<StateMachineUpdate> consumer) { |
| 228 | consumers.add(consumer); |
| 229 | } |
| 230 | |
| 231 | @Override |
| 232 | public void unregisterConsumer(Consumer<StateMachineUpdate> consumer) { |
| 233 | consumers.remove(consumer); |
| 234 | } |
| 235 | |
Madan Jampani | 648451f | 2015-07-21 22:09:05 -0700 | [diff] [blame] | 236 | private class InternalStateMachineWatcher implements TriConsumer<String, Object, Object> { |
| 237 | @Override |
| 238 | public void accept(String name, Object input, Object output) { |
| 239 | StateMachineUpdate update = new StateMachineUpdate(name, input, output); |
| 240 | consumers.forEach(consumer -> consumer.accept(update)); |
| 241 | } |
| 242 | } |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 243 | } |