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 | |
| 19 | import java.util.Collection; |
| 20 | import java.util.List; |
| 21 | import java.util.Map; |
| 22 | import java.util.Map.Entry; |
| 23 | import java.util.Set; |
| 24 | import java.util.concurrent.CompletableFuture; |
| 25 | import java.util.concurrent.CopyOnWriteArrayList; |
| 26 | import java.util.concurrent.atomic.AtomicBoolean; |
| 27 | import java.util.concurrent.atomic.AtomicInteger; |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 28 | import java.util.stream.Collectors; |
Madan Jampani | 393e0f0 | 2015-02-12 07:35:39 +0530 | [diff] [blame] | 29 | |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 30 | import org.onosproject.store.service.DatabaseUpdate; |
| 31 | import org.onosproject.store.service.Transaction; |
Madan Jampani | 393e0f0 | 2015-02-12 07:35:39 +0530 | [diff] [blame] | 32 | import org.onosproject.store.service.Versioned; |
| 33 | |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 34 | import com.google.common.collect.Lists; |
| 35 | import com.google.common.collect.Maps; |
| 36 | import com.google.common.collect.Sets; |
| 37 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 38 | import net.kuujo.copycat.Task; |
| 39 | import net.kuujo.copycat.cluster.Cluster; |
Madan Jampani | ed1b7fc | 2015-04-27 23:30:07 -0700 | [diff] [blame] | 40 | import net.kuujo.copycat.resource.ResourceState; |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 41 | import static com.google.common.base.Preconditions.checkState; |
| 42 | |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 43 | /** |
| 44 | * A database that partitions the keys across one or more database partitions. |
| 45 | */ |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 46 | public class PartitionedDatabase implements Database { |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 47 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 48 | private final String name; |
| 49 | private final Partitioner<String> partitioner; |
| 50 | private final List<Database> partitions; |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 51 | private final AtomicBoolean isOpen = new AtomicBoolean(false); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 52 | private static final String DB_NOT_OPEN = "Partitioned Database is not open"; |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 53 | |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 54 | public PartitionedDatabase( |
| 55 | String name, |
| 56 | Collection<Database> partitions) { |
| 57 | this.name = name; |
| 58 | this.partitions = partitions |
| 59 | .stream() |
| 60 | .sorted((db1, db2) -> db1.name().compareTo(db2.name())) |
| 61 | .collect(Collectors.toList()); |
| 62 | this.partitioner = new SimpleKeyHashPartitioner(this.partitions); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Returns the databases for individual partitions. |
| 67 | * @return list of database partitions |
| 68 | */ |
| 69 | public List<Database> getPartitions() { |
| 70 | return partitions; |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 71 | } |
| 72 | |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 73 | /** |
| 74 | * Returns true if the database is open. |
| 75 | * @return true if open, false otherwise |
| 76 | */ |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 77 | @Override |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 78 | public boolean isOpen() { |
| 79 | return isOpen.get(); |
| 80 | } |
| 81 | |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 82 | @Override |
Madan Jampani | a89f8f9 | 2015-04-01 14:39:54 -0700 | [diff] [blame] | 83 | public CompletableFuture<Set<String>> tableNames() { |
| 84 | checkState(isOpen.get(), DB_NOT_OPEN); |
| 85 | Set<String> tableNames = Sets.newConcurrentHashSet(); |
| 86 | return CompletableFuture.allOf(partitions |
| 87 | .stream() |
| 88 | .map(db -> db.tableNames().thenApply(tableNames::addAll)) |
| 89 | .toArray(CompletableFuture[]::new)) |
| 90 | .thenApply(v -> tableNames); |
| 91 | } |
| 92 | |
| 93 | @Override |
Madan Jampani | b5d72d5 | 2015-04-03 16:53:50 -0700 | [diff] [blame] | 94 | public CompletableFuture<Map<String, Long>> counters() { |
| 95 | checkState(isOpen.get(), DB_NOT_OPEN); |
| 96 | Map<String, Long> counters = Maps.newConcurrentMap(); |
| 97 | return CompletableFuture.allOf(partitions |
| 98 | .stream() |
| 99 | .map(db -> db.counters() |
| 100 | .thenApply(m -> { |
| 101 | counters.putAll(m); |
| 102 | return null; |
| 103 | })) |
| 104 | .toArray(CompletableFuture[]::new)) |
| 105 | .thenApply(v -> counters); |
| 106 | } |
| 107 | |
| 108 | @Override |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 109 | public CompletableFuture<Integer> size(String tableName) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 110 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 111 | AtomicInteger totalSize = new AtomicInteger(0); |
| 112 | return CompletableFuture.allOf(partitions |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 113 | .stream() |
| 114 | .map(p -> p.size(tableName).thenApply(totalSize::addAndGet)) |
| 115 | .toArray(CompletableFuture[]::new)) |
| 116 | .thenApply(v -> totalSize.get()); |
| 117 | } |
| 118 | |
| 119 | @Override |
| 120 | public CompletableFuture<Boolean> isEmpty(String tableName) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 121 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 122 | return size(tableName).thenApply(size -> size == 0); |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | public CompletableFuture<Boolean> containsKey(String tableName, String key) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 127 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 128 | return partitioner.getPartition(tableName, key).containsKey(tableName, key); |
| 129 | } |
| 130 | |
| 131 | @Override |
| 132 | public CompletableFuture<Boolean> containsValue(String tableName, byte[] value) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 133 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 134 | AtomicBoolean containsValue = new AtomicBoolean(false); |
| 135 | return CompletableFuture.allOf(partitions |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 136 | .stream() |
| 137 | .map(p -> p.containsValue(tableName, value).thenApply(v -> containsValue.compareAndSet(false, v))) |
| 138 | .toArray(CompletableFuture[]::new)) |
| 139 | .thenApply(v -> containsValue.get()); |
| 140 | } |
| 141 | |
| 142 | @Override |
| 143 | public CompletableFuture<Versioned<byte[]>> get(String tableName, String key) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 144 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 145 | return partitioner.getPartition(tableName, key).get(tableName, key); |
| 146 | } |
| 147 | |
| 148 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 149 | public CompletableFuture<Result<Versioned<byte[]>>> put(String tableName, String key, byte[] value) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 150 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 151 | return partitioner.getPartition(tableName, key).put(tableName, key, value); |
| 152 | } |
| 153 | |
| 154 | @Override |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 155 | public CompletableFuture<Result<UpdateResult<Versioned<byte[]>>>> putAndGet(String tableName, |
| 156 | String key, |
| 157 | byte[] value) { |
| 158 | checkState(isOpen.get(), DB_NOT_OPEN); |
| 159 | return partitioner.getPartition(tableName, key).putAndGet(tableName, key, value); |
| 160 | } |
| 161 | |
| 162 | @Override |
| 163 | public CompletableFuture<Result<UpdateResult<Versioned<byte[]>>>> putIfAbsentAndGet(String tableName, |
| 164 | String key, |
| 165 | byte[] value) { |
| 166 | checkState(isOpen.get(), DB_NOT_OPEN); |
| 167 | return partitioner.getPartition(tableName, key).putIfAbsentAndGet(tableName, key, value); |
| 168 | } |
| 169 | |
| 170 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 171 | public CompletableFuture<Result<Versioned<byte[]>>> remove(String tableName, String key) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 172 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 173 | return partitioner.getPartition(tableName, key).remove(tableName, key); |
| 174 | } |
| 175 | |
| 176 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 177 | public CompletableFuture<Result<Void>> clear(String tableName) { |
| 178 | AtomicBoolean isLocked = new AtomicBoolean(false); |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 179 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 180 | return CompletableFuture.allOf(partitions |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 181 | .stream() |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 182 | .map(p -> p.clear(tableName) |
| 183 | .thenApply(v -> isLocked.compareAndSet(false, Result.Status.LOCKED == v.status()))) |
| 184 | .toArray(CompletableFuture[]::new)) |
| 185 | .thenApply(v -> isLocked.get() ? Result.locked() : Result.ok(null)); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | @Override |
| 189 | public CompletableFuture<Set<String>> keySet(String tableName) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 190 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 191 | Set<String> keySet = Sets.newConcurrentHashSet(); |
| 192 | return CompletableFuture.allOf(partitions |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 193 | .stream() |
| 194 | .map(p -> p.keySet(tableName).thenApply(keySet::addAll)) |
| 195 | .toArray(CompletableFuture[]::new)) |
| 196 | .thenApply(v -> keySet); |
| 197 | } |
| 198 | |
| 199 | @Override |
| 200 | public CompletableFuture<Collection<Versioned<byte[]>>> values(String tableName) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 201 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 202 | List<Versioned<byte[]>> values = new CopyOnWriteArrayList<>(); |
| 203 | return CompletableFuture.allOf(partitions |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 204 | .stream() |
Madan Jampani | 393e0f0 | 2015-02-12 07:35:39 +0530 | [diff] [blame] | 205 | .map(p -> p.values(tableName).thenApply(values::addAll)) |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 206 | .toArray(CompletableFuture[]::new)) |
| 207 | .thenApply(v -> values); |
| 208 | } |
| 209 | |
| 210 | @Override |
| 211 | public CompletableFuture<Set<Entry<String, Versioned<byte[]>>>> entrySet(String tableName) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 212 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 213 | Set<Entry<String, Versioned<byte[]>>> entrySet = Sets.newConcurrentHashSet(); |
| 214 | return CompletableFuture.allOf(partitions |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 215 | .stream() |
| 216 | .map(p -> p.entrySet(tableName).thenApply(entrySet::addAll)) |
| 217 | .toArray(CompletableFuture[]::new)) |
| 218 | .thenApply(v -> entrySet); |
| 219 | } |
| 220 | |
| 221 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 222 | public CompletableFuture<Result<Versioned<byte[]>>> putIfAbsent(String tableName, String key, byte[] value) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 223 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 224 | return partitioner.getPartition(tableName, key).putIfAbsent(tableName, key, value); |
| 225 | } |
| 226 | |
| 227 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 228 | public CompletableFuture<Result<Boolean>> remove(String tableName, String key, byte[] value) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 229 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 230 | return partitioner.getPartition(tableName, key).remove(tableName, key, value); |
| 231 | } |
| 232 | |
| 233 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 234 | public CompletableFuture<Result<Boolean>> remove(String tableName, String key, long version) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 235 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 236 | return partitioner.getPartition(tableName, key).remove(tableName, key, version); |
| 237 | } |
| 238 | |
| 239 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 240 | public CompletableFuture<Result<Boolean>> replace( |
| 241 | String tableName, String key, byte[] oldValue, byte[] newValue) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 242 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 243 | return partitioner.getPartition(tableName, key).replace(tableName, key, oldValue, newValue); |
| 244 | } |
| 245 | |
| 246 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 247 | public CompletableFuture<Result<Boolean>> replace( |
| 248 | String tableName, String key, long oldVersion, byte[] newValue) { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 249 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 250 | return partitioner.getPartition(tableName, key).replace(tableName, key, oldVersion, newValue); |
| 251 | } |
| 252 | |
| 253 | @Override |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 254 | public CompletableFuture<Result<UpdateResult<Versioned<byte[]>>>> replaceAndGet( |
| 255 | String tableName, String key, long oldVersion, byte[] newValue) { |
| 256 | checkState(isOpen.get(), DB_NOT_OPEN); |
| 257 | return partitioner.getPartition(tableName, key).replaceAndGet(tableName, key, oldVersion, newValue); |
| 258 | } |
| 259 | |
| 260 | @Override |
Madan Jampani | 04aeb45 | 2015-05-02 16:12:24 -0700 | [diff] [blame] | 261 | public CompletableFuture<Long> counterGet(String counterName) { |
Madan Jampani | b5d72d5 | 2015-04-03 16:53:50 -0700 | [diff] [blame] | 262 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 04aeb45 | 2015-05-02 16:12:24 -0700 | [diff] [blame] | 263 | return partitioner.getPartition(counterName, counterName).counterGet(counterName); |
Madan Jampani | b5d72d5 | 2015-04-03 16:53:50 -0700 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | @Override |
Madan Jampani | 04aeb45 | 2015-05-02 16:12:24 -0700 | [diff] [blame] | 267 | public CompletableFuture<Long> counterAddAndGet(String counterName, long delta) { |
Madan Jampani | b5d72d5 | 2015-04-03 16:53:50 -0700 | [diff] [blame] | 268 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | 04aeb45 | 2015-05-02 16:12:24 -0700 | [diff] [blame] | 269 | return partitioner.getPartition(counterName, counterName).counterAddAndGet(counterName, delta); |
| 270 | } |
| 271 | |
| 272 | @Override |
| 273 | public CompletableFuture<Long> counterGetAndAdd(String counterName, long delta) { |
| 274 | checkState(isOpen.get(), DB_NOT_OPEN); |
| 275 | return partitioner.getPartition(counterName, counterName).counterGetAndAdd(counterName, delta); |
Madan Jampani | b5d72d5 | 2015-04-03 16:53:50 -0700 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 279 | public CompletableFuture<Boolean> prepareAndCommit(Transaction transaction) { |
| 280 | Map<Database, Transaction> subTransactions = createSubTransactions(transaction); |
| 281 | if (subTransactions.isEmpty()) { |
| 282 | return CompletableFuture.completedFuture(true); |
| 283 | } else if (subTransactions.size() == 1) { |
| 284 | Entry<Database, Transaction> entry = |
| 285 | subTransactions.entrySet().iterator().next(); |
| 286 | return entry.getKey().prepareAndCommit(entry.getValue()); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 287 | } else { |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 288 | return new TransactionManager(this).execute(transaction); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 289 | } |
| 290 | } |
| 291 | |
| 292 | @Override |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 293 | public CompletableFuture<Boolean> prepare(Transaction transaction) { |
| 294 | Map<Database, Transaction> subTransactions = createSubTransactions(transaction); |
| 295 | AtomicBoolean status = new AtomicBoolean(true); |
| 296 | return CompletableFuture.allOf(subTransactions.entrySet() |
| 297 | .stream() |
| 298 | .map(entry -> entry |
| 299 | .getKey() |
| 300 | .prepare(entry.getValue()) |
| 301 | .thenApply(v -> status.compareAndSet(true, v))) |
| 302 | .toArray(CompletableFuture[]::new)) |
| 303 | .thenApply(v -> status.get()); |
| 304 | } |
| 305 | |
| 306 | @Override |
| 307 | public CompletableFuture<Boolean> commit(Transaction transaction) { |
| 308 | Map<Database, Transaction> subTransactions = createSubTransactions(transaction); |
| 309 | return CompletableFuture.allOf(subTransactions.entrySet() |
| 310 | .stream() |
| 311 | .map(entry -> entry.getKey().commit(entry.getValue())) |
| 312 | .toArray(CompletableFuture[]::new)) |
| 313 | .thenApply(v -> true); |
| 314 | } |
| 315 | |
| 316 | @Override |
| 317 | public CompletableFuture<Boolean> rollback(Transaction transaction) { |
| 318 | Map<Database, Transaction> subTransactions = createSubTransactions(transaction); |
| 319 | return CompletableFuture.allOf(subTransactions.entrySet() |
| 320 | .stream() |
| 321 | .map(entry -> entry.getKey().rollback(entry.getValue())) |
| 322 | .toArray(CompletableFuture[]::new)) |
| 323 | .thenApply(v -> true); |
| 324 | } |
| 325 | |
| 326 | @Override |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 327 | public CompletableFuture<Database> open() { |
| 328 | return CompletableFuture.allOf(partitions |
| 329 | .stream() |
| 330 | .map(Database::open) |
| 331 | .toArray(CompletableFuture[]::new)) |
| 332 | .thenApply(v -> { |
| 333 | isOpen.set(true); |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 334 | return this; |
| 335 | }); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | @Override |
| 339 | public CompletableFuture<Void> close() { |
Madan Jampani | 7f72c3f | 2015-03-01 17:34:59 -0800 | [diff] [blame] | 340 | checkState(isOpen.get(), DB_NOT_OPEN); |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 341 | return CompletableFuture.allOf(partitions |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 342 | .stream() |
| 343 | .map(database -> database.close()) |
Madan Jampani | 0934270 | 2015-02-05 23:32:40 -0800 | [diff] [blame] | 344 | .toArray(CompletableFuture[]::new)); |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 345 | } |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 346 | |
| 347 | @Override |
| 348 | public boolean isClosed() { |
| 349 | return !isOpen.get(); |
| 350 | } |
| 351 | |
| 352 | @Override |
| 353 | public String name() { |
| 354 | return name; |
| 355 | } |
| 356 | |
| 357 | @Override |
| 358 | public Cluster cluster() { |
| 359 | throw new UnsupportedOperationException(); |
| 360 | } |
| 361 | |
| 362 | @Override |
| 363 | public Database addStartupTask(Task<CompletableFuture<Void>> task) { |
| 364 | throw new UnsupportedOperationException(); |
| 365 | } |
| 366 | |
| 367 | @Override |
| 368 | public Database addShutdownTask(Task<CompletableFuture<Void>> task) { |
| 369 | throw new UnsupportedOperationException(); |
| 370 | } |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 371 | |
Madan Jampani | ed1b7fc | 2015-04-27 23:30:07 -0700 | [diff] [blame] | 372 | @Override |
| 373 | public ResourceState state() { |
| 374 | throw new UnsupportedOperationException(); |
| 375 | } |
| 376 | |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 377 | private Map<Database, Transaction> createSubTransactions( |
| 378 | Transaction transaction) { |
| 379 | Map<Database, List<DatabaseUpdate>> perPartitionUpdates = Maps.newHashMap(); |
| 380 | for (DatabaseUpdate update : transaction.updates()) { |
| 381 | Database partition = partitioner.getPartition(update.tableName(), update.key()); |
| 382 | List<DatabaseUpdate> partitionUpdates = |
| 383 | perPartitionUpdates.computeIfAbsent(partition, k -> Lists.newLinkedList()); |
| 384 | partitionUpdates.add(update); |
| 385 | } |
| 386 | Map<Database, Transaction> subTransactions = Maps.newHashMap(); |
| 387 | perPartitionUpdates.forEach((k, v) -> subTransactions.put(k, new DefaultTransaction(transaction.id(), v))); |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 388 | return subTransactions; |
| 389 | } |
| 390 | } |