Jonathan Hart | 6df9017 | 2014-04-03 10:13:11 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.datastore.hazelcast; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 2 | |
| 3 | import java.io.IOException; |
| 4 | import java.util.ArrayList; |
| 5 | import java.util.Arrays; |
| 6 | import java.util.List; |
| 7 | import java.util.Set; |
| 8 | import java.util.concurrent.atomic.AtomicLong; |
| 9 | |
Jonathan Hart | 6df9017 | 2014-04-03 10:13:11 -0700 | [diff] [blame] | 10 | import net.onrc.onos.core.datastore.IKVTable; |
| 11 | import net.onrc.onos.core.datastore.IKVTableID; |
| 12 | import net.onrc.onos.core.datastore.ObjectDoesntExistException; |
| 13 | import net.onrc.onos.core.datastore.ObjectExistsException; |
| 14 | import net.onrc.onos.core.datastore.WrongVersionException; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 15 | |
| 16 | import org.slf4j.Logger; |
| 17 | import org.slf4j.LoggerFactory; |
| 18 | |
| 19 | import com.hazelcast.core.IMap; |
| 20 | import com.hazelcast.nio.ObjectDataInput; |
| 21 | import com.hazelcast.nio.ObjectDataOutput; |
| 22 | import com.hazelcast.nio.serialization.IdentifiedDataSerializable; |
| 23 | |
| 24 | public class HZTable implements IKVTable, IKVTableID { |
| 25 | @SuppressWarnings("unused") |
| 26 | private static final Logger log = LoggerFactory.getLogger(HZTable.class); |
| 27 | |
| 28 | // not sure how strict this should be managed |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame^] | 29 | private static final AtomicLong initialVersion = new AtomicLong(HZClient.VERSION_NONEXISTENT); |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 30 | |
| 31 | /** |
| 32 | * generate a new initial version for an entry. |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame^] | 33 | * |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 34 | * @return initial value |
| 35 | */ |
| 36 | protected static long getInitialVersion() { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 37 | long version = initialVersion.incrementAndGet(); |
| 38 | if (version == HZClient.VERSION_NONEXISTENT) { |
| 39 | // used up whole 64bit space? |
| 40 | version = initialVersion.incrementAndGet(); |
| 41 | } |
| 42 | return version; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | /** |
| 46 | * increment version, avoiding VERSION_NONEXISTENT. |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame^] | 47 | * |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 48 | * @param version |
| 49 | * @return |
| 50 | */ |
| 51 | protected static long getNextVersion(final long version) { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 52 | long nextVersion = version + 1; |
| 53 | if (nextVersion == HZClient.VERSION_NONEXISTENT) { |
| 54 | ++nextVersion; |
| 55 | } |
| 56 | return nextVersion; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 57 | } |
| 58 | |
| 59 | static class VersionedValue implements IdentifiedDataSerializable { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 60 | private static final long serialVersionUID = -3149375966890712708L; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 61 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 62 | private byte[] value; |
| 63 | private long version; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 64 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 65 | protected VersionedValue() { |
| 66 | value = new byte[0]; |
| 67 | version = HZClient.VERSION_NONEXISTENT; |
| 68 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 69 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 70 | public VersionedValue(final byte[] value, final long version) { |
| 71 | this.value = value; |
| 72 | this.version = version; |
| 73 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 74 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 75 | public byte[] getValue() { |
| 76 | return value; |
| 77 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 78 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 79 | public long getVersion() { |
| 80 | return version; |
| 81 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 82 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 83 | public void setValue(final byte[] value) { |
| 84 | this.value = value; |
| 85 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 86 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 87 | public void setNextVersion() { |
| 88 | this.version = getNextVersion(this.version); |
| 89 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 90 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 91 | @Override |
| 92 | public void writeData(final ObjectDataOutput out) throws IOException { |
| 93 | out.writeLong(version); |
| 94 | out.writeInt(value.length); |
| 95 | if (value.length > 0) { |
| 96 | out.write(value); |
| 97 | } |
| 98 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 99 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 100 | @Override |
| 101 | public void readData(final ObjectDataInput in) throws IOException { |
| 102 | version = in.readLong(); |
| 103 | final int valueLen = in.readInt(); |
| 104 | value = new byte[valueLen]; |
| 105 | in.readFully(value); |
| 106 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 107 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 108 | @Override |
| 109 | public int getFactoryId() { |
| 110 | return VersionedValueSerializableFactory.FACTORY_ID; |
| 111 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 112 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 113 | @Override |
| 114 | public int getId() { |
| 115 | return VersionedValueSerializableFactory.VERSIONED_VALUE_ID; |
| 116 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 117 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 118 | @Override |
| 119 | public int hashCode() { |
| 120 | final int prime = 31; |
| 121 | int result = 1; |
| 122 | result = prime * result + (int) (version ^ (version >>> 32)); |
| 123 | result = prime * result + Arrays.hashCode(value); |
| 124 | return result; |
| 125 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 126 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 127 | @Override |
| 128 | public boolean equals(final Object obj) { |
| 129 | if (this == obj) { |
| 130 | return true; |
| 131 | } |
| 132 | if (obj == null) { |
| 133 | return false; |
| 134 | } |
| 135 | if (getClass() != obj.getClass()) { |
| 136 | return false; |
| 137 | } |
| 138 | VersionedValue other = (VersionedValue) obj; |
| 139 | if (version != other.version) { |
| 140 | return false; |
| 141 | } |
| 142 | if (!Arrays.equals(value, other.value)) { |
| 143 | return false; |
| 144 | } |
| 145 | return true; |
| 146 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | // TODO Refactor and extract common parts |
| 150 | public static class Entry implements IKVEntry { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 151 | final byte[] key; |
| 152 | byte[] value; |
| 153 | long version; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 154 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 155 | public Entry(final byte[] key, final byte[] value, final long version) { |
| 156 | this.key = key; |
| 157 | this.setValue(value); |
| 158 | this.setVersion(version); |
| 159 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 160 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 161 | public Entry(final byte[] key) { |
| 162 | this(key, null, HZClient.VERSION_NONEXISTENT); |
| 163 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 164 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 165 | @Override |
| 166 | public byte[] getKey() { |
| 167 | return key; |
| 168 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 169 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 170 | @Override |
| 171 | public byte[] getValue() { |
| 172 | return value; |
| 173 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 174 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 175 | @Override |
| 176 | public long getVersion() { |
| 177 | return version; |
| 178 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 179 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 180 | void setValue(final byte[] value) { |
| 181 | this.value = value; |
| 182 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 183 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 184 | void setVersion(final long version) { |
| 185 | this.version = version; |
| 186 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 190 | private final String mapName; |
| 191 | private final IMap<byte[], VersionedValue> map; |
| 192 | |
| 193 | public HZTable(final String mapName, final IMap<byte[], VersionedValue> map) { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 194 | this.mapName = mapName; |
| 195 | this.map = map; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | @Override |
| 199 | public String getTableName() { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 200 | return mapName; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | @Override |
| 204 | public IKVTableID getTableId() { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 205 | return this; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | @Override |
| 209 | public long create(final byte[] key, final byte[] value) throws ObjectExistsException { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 210 | final long version = getInitialVersion(); |
| 211 | VersionedValue existing = map.putIfAbsent(key, new VersionedValue(value, version)); |
| 212 | if (existing != null) { |
| 213 | throw new ObjectExistsException(this, key); |
| 214 | } |
| 215 | return version; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | @Override |
| 219 | public long forceCreate(final byte[] key, final byte[] value) { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 220 | final long version = getInitialVersion(); |
| 221 | map.set(key, new VersionedValue(value, version)); |
| 222 | return version; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | @Override |
| 226 | public IKVEntry read(final byte[] key) throws ObjectDoesntExistException { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 227 | final VersionedValue value = map.get(key); |
| 228 | if (value == null) { |
| 229 | throw new ObjectDoesntExistException(this, key); |
| 230 | } |
| 231 | return new Entry(key, value.getValue(), value.getVersion()); |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 232 | } |
| 233 | |
| 234 | @Override |
| 235 | public long update(final byte[] key, final byte[] value, final long version) |
| 236 | throws ObjectDoesntExistException, WrongVersionException { |
| 237 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 238 | try { |
| 239 | map.lock(key); |
| 240 | final VersionedValue oldValue = map.get(key); |
| 241 | if (oldValue == null) { |
| 242 | throw new ObjectDoesntExistException(this, key); |
| 243 | } |
| 244 | if (oldValue.getVersion() != version) { |
| 245 | throw new WrongVersionException(this, key, version, oldValue.getVersion()); |
| 246 | } |
| 247 | final long nextVersion = getNextVersion(version); |
| 248 | map.set(key, new VersionedValue(value, nextVersion)); |
| 249 | return nextVersion; |
| 250 | } finally { |
| 251 | map.unlock(key); |
| 252 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 253 | } |
| 254 | |
| 255 | @Override |
| 256 | public long update(final byte[] key, final byte[] value) |
| 257 | throws ObjectDoesntExistException { |
| 258 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 259 | try { |
| 260 | map.lock(key); |
| 261 | final VersionedValue valueInMap = map.get(key); |
| 262 | if (valueInMap == null) { |
| 263 | throw new ObjectDoesntExistException(this, key); |
| 264 | } |
| 265 | valueInMap.setValue(value); |
| 266 | valueInMap.setNextVersion(); |
| 267 | map.set(key, valueInMap); |
| 268 | return valueInMap.getVersion(); |
| 269 | } finally { |
| 270 | map.unlock(key); |
| 271 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 272 | } |
| 273 | |
| 274 | @Override |
| 275 | public long delete(final byte[] key, final long version) |
| 276 | throws ObjectDoesntExistException, WrongVersionException { |
| 277 | |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 278 | try { |
| 279 | map.lock(key); |
| 280 | final VersionedValue oldValue = map.get(key); |
| 281 | if (oldValue == null) { |
| 282 | throw new ObjectDoesntExistException(this, key); |
| 283 | } |
| 284 | if (oldValue.getVersion() != version) { |
| 285 | throw new WrongVersionException(this, key, version, oldValue.getVersion()); |
| 286 | } |
| 287 | map.delete(key); |
| 288 | return oldValue.getVersion(); |
| 289 | } finally { |
| 290 | map.unlock(key); |
| 291 | } |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | @Override |
| 295 | public long forceDelete(final byte[] key) { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 296 | final VersionedValue valueInMap = map.remove(key); |
| 297 | if (valueInMap == null) { |
| 298 | return HZClient.VERSION_NONEXISTENT; |
| 299 | } |
| 300 | return valueInMap.getVersion(); |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | @Override |
| 304 | public Iterable<IKVEntry> getAllEntries() { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 305 | final Set<IMap.Entry<byte[], VersionedValue>> entries = map.entrySet(); |
| 306 | List<IKVEntry> entryList = new ArrayList<IKVTable.IKVEntry>(entries.size()); |
| 307 | for (IMap.Entry<byte[], VersionedValue> entry : entries) { |
| 308 | entryList.add(new Entry(entry.getKey(), entry.getValue().getValue(), entry.getValue().getVersion())); |
| 309 | } |
| 310 | return entryList; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | @Override |
| 314 | public String toString() { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 315 | return "[HZTable " + mapName + "]"; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | IMap<byte[], VersionedValue> getBackendMap() { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 319 | return this.map; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 320 | } |
| 321 | |
| 322 | @Override |
| 323 | public long VERSION_NONEXISTENT() { |
Yuta HIGUCHI | 826b4a4 | 2014-03-24 13:10:33 -0700 | [diff] [blame] | 324 | return HZClient.VERSION_NONEXISTENT; |
Yuta HIGUCHI | 6a64313 | 2014-03-18 22:39:27 -0700 | [diff] [blame] | 325 | } |
| 326 | } |