Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 1 | package org.onlab.onos.store.service.impl; |
| 2 | |
| 3 | import static org.slf4j.LoggerFactory.getLogger; |
| 4 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 5 | import java.io.File; |
| 6 | import java.io.IOException; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 7 | import java.util.Collection; |
| 8 | import java.util.Collections; |
| 9 | import java.util.HashSet; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 10 | import java.util.Map; |
| 11 | import java.util.Set; |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 12 | import java.util.concurrent.CountDownLatch; |
Yuta HIGUCHI | 39da979 | 2014-11-14 02:07:04 -0800 | [diff] [blame] | 13 | import java.util.concurrent.ExecutionException; |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 14 | import java.util.concurrent.TimeUnit; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 15 | |
| 16 | import net.kuujo.copycat.Copycat; |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 17 | import net.kuujo.copycat.cluster.ClusterConfig; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 18 | import net.kuujo.copycat.cluster.Member; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 19 | import net.kuujo.copycat.cluster.TcpCluster; |
| 20 | import net.kuujo.copycat.cluster.TcpClusterConfig; |
| 21 | import net.kuujo.copycat.cluster.TcpMember; |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame^] | 22 | import net.kuujo.copycat.event.EventHandler; |
Madan Jampani | f5d263b | 2014-11-13 10:04:40 -0800 | [diff] [blame] | 23 | import net.kuujo.copycat.event.LeaderElectEvent; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 24 | import net.kuujo.copycat.log.Log; |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 25 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 26 | import org.apache.felix.scr.annotations.Activate; |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 27 | import org.apache.felix.scr.annotations.Component; |
Yuta HIGUCHI | 657626e | 2014-11-04 20:54:58 -0800 | [diff] [blame] | 28 | import org.apache.felix.scr.annotations.Deactivate; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 29 | import org.apache.felix.scr.annotations.Reference; |
| 30 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 31 | import org.apache.felix.scr.annotations.Service; |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 32 | import org.onlab.onos.cluster.ClusterEvent; |
| 33 | import org.onlab.onos.cluster.ClusterEventListener; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 34 | import org.onlab.onos.cluster.ClusterService; |
| 35 | import org.onlab.onos.cluster.ControllerNode; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 36 | import org.onlab.onos.cluster.DefaultControllerNode; |
| 37 | import org.onlab.onos.cluster.NodeId; |
Madan Jampani | def2c65 | 2014-11-12 13:50:10 -0800 | [diff] [blame] | 38 | import org.onlab.onos.store.cluster.messaging.ClusterCommunicationService; |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame^] | 39 | import org.onlab.onos.store.cluster.messaging.ClusterMessage; |
| 40 | import org.onlab.onos.store.cluster.messaging.MessageSubject; |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 41 | import org.onlab.onos.store.service.BatchReadRequest; |
| 42 | import org.onlab.onos.store.service.BatchReadResult; |
| 43 | import org.onlab.onos.store.service.BatchWriteRequest; |
| 44 | import org.onlab.onos.store.service.BatchWriteResult; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 45 | import org.onlab.onos.store.service.DatabaseAdminService; |
| 46 | import org.onlab.onos.store.service.DatabaseException; |
| 47 | import org.onlab.onos.store.service.DatabaseService; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 48 | import org.onlab.onos.store.service.ReadResult; |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 49 | import org.onlab.onos.store.service.ReadStatus; |
| 50 | import org.onlab.onos.store.service.VersionedValue; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 51 | import org.onlab.onos.store.service.WriteResult; |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 52 | import org.onlab.onos.store.service.WriteStatus; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 53 | import org.onlab.packet.IpAddress; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 54 | import org.slf4j.Logger; |
| 55 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 56 | import com.google.common.collect.ImmutableList; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 57 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 58 | /** |
| 59 | * Strongly consistent and durable state management service based on |
| 60 | * Copycat implementation of Raft consensus protocol. |
| 61 | */ |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 62 | @Component(immediate = true) |
| 63 | @Service |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 64 | public class DatabaseManager implements DatabaseService, DatabaseAdminService { |
| 65 | |
| 66 | private final Logger log = getLogger(getClass()); |
| 67 | |
| 68 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Yuta HIGUCHI | 5001ba9 | 2014-11-04 21:33:54 -0800 | [diff] [blame] | 69 | protected ClusterService clusterService; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 70 | |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 71 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Madan Jampani | def2c65 | 2014-11-12 13:50:10 -0800 | [diff] [blame] | 72 | protected ClusterCommunicationService clusterCommunicator; |
| 73 | |
| 74 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Yuta HIGUCHI | 0c1c100 | 2014-11-05 13:47:25 -0800 | [diff] [blame] | 75 | protected DatabaseProtocolService copycatMessagingProtocol; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 76 | |
Yuta HIGUCHI | 13a6f5a | 2014-11-12 10:07:47 -0800 | [diff] [blame] | 77 | // FIXME: point to appropriate path |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 78 | public static final String LOG_FILE_PREFIX = "/tmp/onos-copy-cat-log_"; |
| 79 | |
| 80 | // Current working dir seems to be /opt/onos/apache-karaf-3.0.2 |
Pavlin Radoslavov | 190f8f9 | 2014-11-11 15:56:14 -0800 | [diff] [blame] | 81 | // TODO: Set the path to /opt/onos/config |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 82 | private static final String CONFIG_DIR = "../config"; |
| 83 | |
| 84 | private static final String DEFAULT_MEMBER_FILE = "tablets.json"; |
| 85 | |
| 86 | private static final String DEFAULT_TABLET = "default"; |
| 87 | |
| 88 | // TODO: make this configurable |
| 89 | // initial member configuration file path |
| 90 | private String initialMemberConfig = DEFAULT_MEMBER_FILE; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 91 | |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame^] | 92 | public static final MessageSubject RAFT_LEADER_ELECTION_EVENT = |
| 93 | new MessageSubject("raft-leader-election-event"); |
| 94 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 95 | private Copycat copycat; |
| 96 | private DatabaseClient client; |
| 97 | |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 98 | // guarded by synchronized block |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 99 | private ClusterConfig<TcpMember> clusterConfig; |
| 100 | |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 101 | private CountDownLatch clusterEventLatch; |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 102 | private ClusterEventListener clusterEventListener; |
| 103 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 104 | private Map<String, Set<DefaultControllerNode>> tabletMembers; |
| 105 | |
| 106 | private boolean autoAddMember = false; |
| 107 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 108 | @Activate |
Yuta HIGUCHI | 39da979 | 2014-11-14 02:07:04 -0800 | [diff] [blame] | 109 | public void activate() throws InterruptedException, ExecutionException { |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 110 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 111 | // load tablet configuration |
| 112 | File file = new File(CONFIG_DIR, initialMemberConfig); |
| 113 | log.info("Loading config: {}", file.getAbsolutePath()); |
| 114 | TabletDefinitionStore tabletDef = new TabletDefinitionStore(file); |
| 115 | try { |
| 116 | tabletMembers = tabletDef.read(); |
| 117 | } catch (IOException e) { |
| 118 | log.error("Failed to load tablet config {}", file); |
| 119 | throw new IllegalStateException("Failed to load tablet config", e); |
| 120 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 121 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 122 | // load default tablet configuration and start copycat |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 123 | clusterConfig = new TcpClusterConfig(); |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame^] | 124 | Set<DefaultControllerNode> defaultMembers = tabletMembers.get(DEFAULT_TABLET); |
| 125 | if (defaultMembers == null || defaultMembers.isEmpty()) { |
| 126 | log.error("No members found in [{}] tablet configuration.", |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 127 | DEFAULT_TABLET); |
| 128 | throw new IllegalStateException("No member found in tablet configuration"); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 129 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 130 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 131 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 132 | final ControllerNode localNode = clusterService.getLocalNode(); |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame^] | 133 | for (ControllerNode member : defaultMembers) { |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 134 | final TcpMember tcpMember = new TcpMember(member.ip().toString(), |
| 135 | member.tcpPort()); |
| 136 | if (localNode.equals(member)) { |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 137 | clusterConfig.setLocalMember(tcpMember); |
| 138 | } else { |
| 139 | clusterConfig.addRemoteMember(tcpMember); |
| 140 | } |
| 141 | } |
| 142 | |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame^] | 143 | if (clusterConfig.getLocalMember() != null) { |
| 144 | |
| 145 | // Wait for a minimum viable Raft cluster to boot up. |
| 146 | waitForClusterQuorum(); |
| 147 | |
| 148 | final TcpCluster cluster; |
| 149 | synchronized (clusterConfig) { |
| 150 | // Create the cluster. |
| 151 | cluster = new TcpCluster(clusterConfig); |
| 152 | } |
| 153 | log.info("Starting cluster: {}", cluster); |
| 154 | |
| 155 | DatabaseEntryExpirationTracker expirationTracker = |
| 156 | new DatabaseEntryExpirationTracker( |
| 157 | clusterConfig.getLocalMember(), |
| 158 | clusterService.getLocalNode(), |
| 159 | clusterCommunicator, |
| 160 | this); |
| 161 | |
| 162 | DatabaseStateMachine stateMachine = new DatabaseStateMachine(); |
| 163 | stateMachine.addEventListener(expirationTracker); |
| 164 | Log consensusLog = new MapDBLog(LOG_FILE_PREFIX + localNode.id(), |
| 165 | ClusterMessagingProtocol.SERIALIZER); |
| 166 | |
| 167 | copycat = new Copycat(stateMachine, consensusLog, cluster, copycatMessagingProtocol); |
| 168 | copycat.event(LeaderElectEvent.class).registerHandler(new RaftLeaderElectionMonitor()); |
| 169 | copycat.event(LeaderElectEvent.class).registerHandler(expirationTracker); |
| 170 | } |
| 171 | |
| 172 | client = new DatabaseClient(copycatMessagingProtocol); |
| 173 | clusterCommunicator.addSubscriber(RAFT_LEADER_ELECTION_EVENT, client); |
| 174 | |
| 175 | // Starts copycat if this node is a participant |
| 176 | // of the Raft cluster. |
| 177 | if (copycat != null) { |
| 178 | copycat.start().get(); |
| 179 | } |
| 180 | |
| 181 | client.waitForLeader(); |
| 182 | log.info("Started."); |
| 183 | } |
| 184 | |
| 185 | @Deactivate |
| 186 | public void deactivate() { |
| 187 | clusterService.removeListener(clusterEventListener); |
| 188 | // TODO: ClusterCommunicationService must support more than one |
| 189 | // handler per message subject. |
| 190 | clusterCommunicator.removeSubscriber(RAFT_LEADER_ELECTION_EVENT); |
| 191 | if (copycat != null) { |
| 192 | copycat.stop(); |
| 193 | } |
| 194 | log.info("Stopped."); |
| 195 | } |
| 196 | |
| 197 | private void waitForClusterQuorum() { |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 198 | // note: from this point beyond, clusterConfig requires synchronization |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 199 | clusterEventLatch = new CountDownLatch(1); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 200 | clusterEventListener = new InternalClusterEventListener(); |
| 201 | clusterService.addListener(clusterEventListener); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 202 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 203 | if (clusterService.getNodes().size() < clusterConfig.getMembers().size()) { |
| 204 | // current cluster size smaller then expected |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 205 | try { |
| 206 | if (!clusterEventLatch.await(120, TimeUnit.SECONDS)) { |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 207 | log.info("Starting with {}/{} nodes cluster", |
| 208 | clusterService.getNodes().size(), |
| 209 | clusterConfig.getMembers().size()); |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 210 | } |
| 211 | } catch (InterruptedException e) { |
| 212 | log.info("Interrupted waiting for others", e); |
| 213 | } |
| 214 | } |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | @Override |
| 218 | public boolean createTable(String name) { |
| 219 | return client.createTable(name); |
| 220 | } |
| 221 | |
| 222 | @Override |
Madan Jampani | def2c65 | 2014-11-12 13:50:10 -0800 | [diff] [blame] | 223 | public boolean createTable(String name, int ttlMillis) { |
| 224 | return client.createTable(name, ttlMillis); |
| 225 | } |
| 226 | |
| 227 | @Override |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 228 | public void dropTable(String name) { |
| 229 | client.dropTable(name); |
| 230 | } |
| 231 | |
| 232 | @Override |
| 233 | public void dropAllTables() { |
| 234 | client.dropAllTables(); |
| 235 | } |
| 236 | |
| 237 | @Override |
Madan Jampani | f5d263b | 2014-11-13 10:04:40 -0800 | [diff] [blame] | 238 | public Set<String> listTables() { |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 239 | return client.listTables(); |
| 240 | } |
| 241 | |
| 242 | @Override |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 243 | public VersionedValue get(String tableName, String key) { |
| 244 | BatchReadRequest batchRequest = new BatchReadRequest.Builder().get(tableName, key).build(); |
| 245 | ReadResult readResult = batchRead(batchRequest).getAsList().get(0); |
| 246 | if (readResult.status().equals(ReadStatus.OK)) { |
| 247 | return readResult.value(); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 248 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 249 | throw new DatabaseException("get failed due to status: " + readResult.status()); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | @Override |
Yuta HIGUCHI | 841c0b6 | 2014-11-13 20:27:14 -0800 | [diff] [blame] | 253 | public Map<String, VersionedValue> getAll(String tableName) { |
| 254 | return client.getAll(tableName); |
| 255 | } |
| 256 | |
| 257 | |
| 258 | @Override |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 259 | public BatchReadResult batchRead(BatchReadRequest batchRequest) { |
| 260 | return new BatchReadResult(client.batchRead(batchRequest)); |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | @Override |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 264 | public BatchWriteResult batchWrite(BatchWriteRequest batchRequest) { |
| 265 | return new BatchWriteResult(client.batchWrite(batchRequest)); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | @Override |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 269 | public VersionedValue put(String tableName, String key, byte[] value) { |
| 270 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder().put(tableName, key, value).build(); |
| 271 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 272 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 273 | return writeResult.previousValue(); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 274 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 275 | throw new DatabaseException("put failed due to status: " + writeResult.status()); |
| 276 | } |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 277 | |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 278 | @Override |
| 279 | public boolean putIfAbsent(String tableName, String key, byte[] value) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 280 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 281 | .putIfAbsent(tableName, key, value).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 282 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 283 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 284 | return true; |
| 285 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 286 | return false; |
| 287 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 288 | throw new DatabaseException("putIfAbsent failed due to status: " |
| 289 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | @Override |
| 293 | public boolean putIfVersionMatches(String tableName, String key, |
| 294 | byte[] value, long version) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 295 | BatchWriteRequest batchRequest = |
| 296 | new BatchWriteRequest.Builder() |
| 297 | .putIfVersionMatches(tableName, key, value, version).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 298 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 299 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 300 | return true; |
| 301 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 302 | return false; |
| 303 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 304 | throw new DatabaseException("putIfVersionMatches failed due to status: " |
| 305 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | @Override |
| 309 | public boolean putIfValueMatches(String tableName, String key, |
| 310 | byte[] oldValue, byte[] newValue) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 311 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 312 | .putIfValueMatches(tableName, key, oldValue, newValue).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 313 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 314 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 315 | return true; |
| 316 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 317 | return false; |
| 318 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 319 | throw new DatabaseException("putIfValueMatches failed due to status: " |
| 320 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | @Override |
| 324 | public VersionedValue remove(String tableName, String key) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 325 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 326 | .remove(tableName, key).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 327 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 328 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 329 | return writeResult.previousValue(); |
| 330 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 331 | throw new DatabaseException("remove failed due to status: " |
| 332 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | @Override |
| 336 | public boolean removeIfVersionMatches(String tableName, String key, |
| 337 | long version) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 338 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 339 | .removeIfVersionMatches(tableName, key, version).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 340 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 341 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 342 | return true; |
| 343 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 344 | return false; |
| 345 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 346 | throw new DatabaseException("removeIfVersionMatches failed due to status: " |
| 347 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | @Override |
| 351 | public boolean removeIfValueMatches(String tableName, String key, |
| 352 | byte[] value) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 353 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 354 | .removeIfValueMatches(tableName, key, value).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 355 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 356 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 357 | return true; |
| 358 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 359 | return false; |
| 360 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 361 | throw new DatabaseException("removeIfValueMatches failed due to status: " |
| 362 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | @Override |
| 366 | public void addMember(final ControllerNode node) { |
| 367 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
| 368 | node.tcpPort()); |
| 369 | log.info("{} was added to the cluster", tcpMember); |
| 370 | synchronized (clusterConfig) { |
| 371 | clusterConfig.addRemoteMember(tcpMember); |
| 372 | } |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 373 | } |
| 374 | |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame^] | 375 | private final class RaftLeaderElectionMonitor implements EventHandler<LeaderElectEvent> { |
| 376 | @Override |
| 377 | public void handle(LeaderElectEvent event) { |
| 378 | try { |
| 379 | if (clusterConfig.getLocalMember() != null && event.leader().equals(clusterConfig.getLocalMember())) { |
| 380 | // This node just became the leader. |
| 381 | clusterCommunicator.broadcastIncludeSelf( |
| 382 | new ClusterMessage( |
| 383 | clusterService.getLocalNode().id(), |
| 384 | RAFT_LEADER_ELECTION_EVENT, |
| 385 | ClusterMessagingProtocol.SERIALIZER.encode(event))); |
| 386 | } |
| 387 | } catch (IOException e) { |
| 388 | log.error("Failed to broadcast raft leadership change event", e); |
| 389 | } |
| 390 | } |
| 391 | } |
| 392 | |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 393 | private final class InternalClusterEventListener |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 394 | implements ClusterEventListener { |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 395 | |
| 396 | @Override |
| 397 | public void event(ClusterEvent event) { |
| 398 | // TODO: Not every node should be part of the consensus ring. |
| 399 | |
| 400 | final ControllerNode node = event.subject(); |
| 401 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 402 | node.tcpPort()); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 403 | |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 404 | switch (event.type()) { |
| 405 | case INSTANCE_ACTIVATED: |
| 406 | case INSTANCE_ADDED: |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 407 | if (autoAddMember) { |
| 408 | synchronized (clusterConfig) { |
| 409 | if (!clusterConfig.getMembers().contains(tcpMember)) { |
| 410 | log.info("{} was automatically added to the cluster", tcpMember); |
| 411 | clusterConfig.addRemoteMember(tcpMember); |
| 412 | } |
| 413 | } |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 414 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 415 | break; |
| 416 | case INSTANCE_DEACTIVATED: |
| 417 | case INSTANCE_REMOVED: |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 418 | if (autoAddMember) { |
| 419 | Set<DefaultControllerNode> members |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 420 | = tabletMembers.getOrDefault(DEFAULT_TABLET, |
| 421 | Collections.emptySet()); |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 422 | // remove only if not the initial members |
| 423 | if (!members.contains(node)) { |
| 424 | synchronized (clusterConfig) { |
| 425 | if (clusterConfig.getMembers().contains(tcpMember)) { |
| 426 | log.info("{} was automatically removed from the cluster", tcpMember); |
| 427 | clusterConfig.removeRemoteMember(tcpMember); |
| 428 | } |
| 429 | } |
| 430 | } |
| 431 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 432 | break; |
| 433 | default: |
| 434 | break; |
| 435 | } |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 436 | if (copycat != null) { |
| 437 | log.debug("Current cluster: {}", copycat.cluster()); |
| 438 | } |
| 439 | clusterEventLatch.countDown(); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | } |
| 443 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 444 | @Override |
| 445 | public void removeMember(final ControllerNode node) { |
| 446 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
| 447 | node.tcpPort()); |
| 448 | log.info("{} was removed from the cluster", tcpMember); |
| 449 | synchronized (clusterConfig) { |
| 450 | clusterConfig.removeRemoteMember(tcpMember); |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | @Override |
| 455 | public Collection<ControllerNode> listMembers() { |
| 456 | if (copycat == null) { |
| 457 | return ImmutableList.of(); |
| 458 | } |
| 459 | Set<ControllerNode> members = new HashSet<>(); |
| 460 | for (Member member : copycat.cluster().members()) { |
| 461 | if (member instanceof TcpMember) { |
| 462 | final TcpMember tcpMember = (TcpMember) member; |
| 463 | // TODO assuming tcpMember#host to be IP address, |
| 464 | // but if not lookup DNS, etc. first |
| 465 | IpAddress ip = IpAddress.valueOf(tcpMember.host()); |
| 466 | int tcpPort = tcpMember.port(); |
| 467 | NodeId id = getNodeIdFromIp(ip, tcpPort); |
| 468 | if (id == null) { |
| 469 | log.info("No NodeId found for {}:{}", ip, tcpPort); |
| 470 | continue; |
| 471 | } |
| 472 | members.add(new DefaultControllerNode(id, ip, tcpPort)); |
| 473 | } |
| 474 | } |
| 475 | return members; |
| 476 | } |
| 477 | |
| 478 | private NodeId getNodeIdFromIp(IpAddress ip, int tcpPort) { |
| 479 | for (ControllerNode node : clusterService.getNodes()) { |
| 480 | if (node.ip().equals(ip) && |
| 481 | node.tcpPort() == tcpPort) { |
| 482 | return node.id(); |
| 483 | } |
| 484 | } |
| 485 | return null; |
| 486 | } |
Madan Jampani | def2c65 | 2014-11-12 13:50:10 -0800 | [diff] [blame] | 487 | } |