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(); |
Madan Jampani | 71582ed | 2014-11-18 10:06:01 -0800 | [diff] [blame^] | 182 | |
| 183 | // Try and list the tables to verify database manager is |
| 184 | // in a state where it can serve requests. |
| 185 | tryTableListing(); |
| 186 | |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame] | 187 | log.info("Started."); |
| 188 | } |
| 189 | |
| 190 | @Deactivate |
| 191 | public void deactivate() { |
| 192 | clusterService.removeListener(clusterEventListener); |
| 193 | // TODO: ClusterCommunicationService must support more than one |
| 194 | // handler per message subject. |
| 195 | clusterCommunicator.removeSubscriber(RAFT_LEADER_ELECTION_EVENT); |
| 196 | if (copycat != null) { |
| 197 | copycat.stop(); |
| 198 | } |
| 199 | log.info("Stopped."); |
| 200 | } |
| 201 | |
| 202 | private void waitForClusterQuorum() { |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 203 | // note: from this point beyond, clusterConfig requires synchronization |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 204 | clusterEventLatch = new CountDownLatch(1); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 205 | clusterEventListener = new InternalClusterEventListener(); |
| 206 | clusterService.addListener(clusterEventListener); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 207 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 208 | if (clusterService.getNodes().size() < clusterConfig.getMembers().size()) { |
| 209 | // current cluster size smaller then expected |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 210 | try { |
| 211 | if (!clusterEventLatch.await(120, TimeUnit.SECONDS)) { |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 212 | log.info("Starting with {}/{} nodes cluster", |
| 213 | clusterService.getNodes().size(), |
| 214 | clusterConfig.getMembers().size()); |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 215 | } |
| 216 | } catch (InterruptedException e) { |
| 217 | log.info("Interrupted waiting for others", e); |
| 218 | } |
| 219 | } |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 220 | } |
| 221 | |
Madan Jampani | 71582ed | 2014-11-18 10:06:01 -0800 | [diff] [blame^] | 222 | private void tryTableListing() { |
| 223 | int retries = 0; |
| 224 | do { |
| 225 | try { |
| 226 | listTables(); |
| 227 | return; |
| 228 | } catch (DatabaseException e) { |
| 229 | if (retries == 10) { |
| 230 | log.error("Failed to listTables after multiple attempts. Giving up.", e); |
| 231 | throw e; |
| 232 | } else { |
| 233 | log.debug("Failed to listTables. Will retry...", e); |
| 234 | retries++; |
| 235 | } |
| 236 | } |
| 237 | } while (true); |
| 238 | } |
| 239 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 240 | @Override |
| 241 | public boolean createTable(String name) { |
| 242 | return client.createTable(name); |
| 243 | } |
| 244 | |
| 245 | @Override |
Madan Jampani | def2c65 | 2014-11-12 13:50:10 -0800 | [diff] [blame] | 246 | public boolean createTable(String name, int ttlMillis) { |
| 247 | return client.createTable(name, ttlMillis); |
| 248 | } |
| 249 | |
| 250 | @Override |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 251 | public void dropTable(String name) { |
| 252 | client.dropTable(name); |
| 253 | } |
| 254 | |
| 255 | @Override |
| 256 | public void dropAllTables() { |
| 257 | client.dropAllTables(); |
| 258 | } |
| 259 | |
| 260 | @Override |
Madan Jampani | f5d263b | 2014-11-13 10:04:40 -0800 | [diff] [blame] | 261 | public Set<String> listTables() { |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 262 | return client.listTables(); |
| 263 | } |
| 264 | |
| 265 | @Override |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 266 | public VersionedValue get(String tableName, String key) { |
| 267 | BatchReadRequest batchRequest = new BatchReadRequest.Builder().get(tableName, key).build(); |
| 268 | ReadResult readResult = batchRead(batchRequest).getAsList().get(0); |
| 269 | if (readResult.status().equals(ReadStatus.OK)) { |
| 270 | return readResult.value(); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 271 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 272 | throw new DatabaseException("get failed due to status: " + readResult.status()); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | @Override |
Yuta HIGUCHI | 841c0b6 | 2014-11-13 20:27:14 -0800 | [diff] [blame] | 276 | public Map<String, VersionedValue> getAll(String tableName) { |
| 277 | return client.getAll(tableName); |
| 278 | } |
| 279 | |
| 280 | |
| 281 | @Override |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 282 | public BatchReadResult batchRead(BatchReadRequest batchRequest) { |
| 283 | return new BatchReadResult(client.batchRead(batchRequest)); |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | @Override |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 287 | public BatchWriteResult batchWrite(BatchWriteRequest batchRequest) { |
| 288 | return new BatchWriteResult(client.batchWrite(batchRequest)); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | @Override |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 292 | public VersionedValue put(String tableName, String key, byte[] value) { |
| 293 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder().put(tableName, key, value).build(); |
| 294 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 295 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 296 | return writeResult.previousValue(); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 297 | } |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 298 | throw new DatabaseException("put failed due to status: " + writeResult.status()); |
| 299 | } |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 300 | |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 301 | @Override |
| 302 | public boolean putIfAbsent(String tableName, String key, byte[] value) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 303 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 304 | .putIfAbsent(tableName, key, value).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 305 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 306 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 307 | return true; |
| 308 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 309 | return false; |
| 310 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 311 | throw new DatabaseException("putIfAbsent failed due to status: " |
| 312 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | @Override |
| 316 | public boolean putIfVersionMatches(String tableName, String key, |
| 317 | byte[] value, long version) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 318 | BatchWriteRequest batchRequest = |
| 319 | new BatchWriteRequest.Builder() |
| 320 | .putIfVersionMatches(tableName, key, value, version).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 321 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 322 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 323 | return true; |
| 324 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 325 | return false; |
| 326 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 327 | throw new DatabaseException("putIfVersionMatches failed due to status: " |
| 328 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 329 | } |
| 330 | |
| 331 | @Override |
| 332 | public boolean putIfValueMatches(String tableName, String key, |
| 333 | byte[] oldValue, byte[] newValue) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 334 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 335 | .putIfValueMatches(tableName, key, oldValue, newValue).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 336 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 337 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 338 | return true; |
| 339 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 340 | return false; |
| 341 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 342 | throw new DatabaseException("putIfValueMatches failed due to status: " |
| 343 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | @Override |
| 347 | public VersionedValue remove(String tableName, String key) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 348 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 349 | .remove(tableName, key).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 350 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 351 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 352 | return writeResult.previousValue(); |
| 353 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 354 | throw new DatabaseException("remove failed due to status: " |
| 355 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | @Override |
| 359 | public boolean removeIfVersionMatches(String tableName, String key, |
| 360 | long version) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 361 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 362 | .removeIfVersionMatches(tableName, key, version).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 363 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 364 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 365 | return true; |
| 366 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 367 | return false; |
| 368 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 369 | throw new DatabaseException("removeIfVersionMatches failed due to status: " |
| 370 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 371 | } |
| 372 | |
| 373 | @Override |
| 374 | public boolean removeIfValueMatches(String tableName, String key, |
| 375 | byte[] value) { |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 376 | BatchWriteRequest batchRequest = new BatchWriteRequest.Builder() |
| 377 | .removeIfValueMatches(tableName, key, value).build(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 378 | WriteResult writeResult = batchWrite(batchRequest).getAsList().get(0); |
| 379 | if (writeResult.status().equals(WriteStatus.OK)) { |
| 380 | return true; |
| 381 | } else if (writeResult.status().equals(WriteStatus.PRECONDITION_VIOLATION)) { |
| 382 | return false; |
| 383 | } |
Madan Jampani | 44e6a54 | 2014-11-12 01:06:51 -0800 | [diff] [blame] | 384 | throw new DatabaseException("removeIfValueMatches failed due to status: " |
| 385 | + writeResult.status()); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | @Override |
| 389 | public void addMember(final ControllerNode node) { |
| 390 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
| 391 | node.tcpPort()); |
| 392 | log.info("{} was added to the cluster", tcpMember); |
| 393 | synchronized (clusterConfig) { |
| 394 | clusterConfig.addRemoteMember(tcpMember); |
| 395 | } |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 396 | } |
| 397 | |
Madan Jampani | 5ce3025 | 2014-11-17 20:53:17 -0800 | [diff] [blame] | 398 | private final class RaftLeaderElectionMonitor implements EventHandler<LeaderElectEvent> { |
| 399 | @Override |
| 400 | public void handle(LeaderElectEvent event) { |
| 401 | try { |
| 402 | if (clusterConfig.getLocalMember() != null && event.leader().equals(clusterConfig.getLocalMember())) { |
| 403 | // This node just became the leader. |
| 404 | clusterCommunicator.broadcastIncludeSelf( |
| 405 | new ClusterMessage( |
| 406 | clusterService.getLocalNode().id(), |
| 407 | RAFT_LEADER_ELECTION_EVENT, |
| 408 | ClusterMessagingProtocol.SERIALIZER.encode(event))); |
| 409 | } |
| 410 | } catch (IOException e) { |
| 411 | log.error("Failed to broadcast raft leadership change event", e); |
| 412 | } |
| 413 | } |
| 414 | } |
| 415 | |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 416 | private final class InternalClusterEventListener |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 417 | implements ClusterEventListener { |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 418 | |
| 419 | @Override |
| 420 | public void event(ClusterEvent event) { |
| 421 | // TODO: Not every node should be part of the consensus ring. |
| 422 | |
| 423 | final ControllerNode node = event.subject(); |
| 424 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 425 | node.tcpPort()); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 426 | |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 427 | switch (event.type()) { |
| 428 | case INSTANCE_ACTIVATED: |
| 429 | case INSTANCE_ADDED: |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 430 | if (autoAddMember) { |
| 431 | synchronized (clusterConfig) { |
| 432 | if (!clusterConfig.getMembers().contains(tcpMember)) { |
| 433 | log.info("{} was automatically added to the cluster", tcpMember); |
| 434 | clusterConfig.addRemoteMember(tcpMember); |
| 435 | } |
| 436 | } |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 437 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 438 | break; |
| 439 | case INSTANCE_DEACTIVATED: |
| 440 | case INSTANCE_REMOVED: |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 441 | if (autoAddMember) { |
| 442 | Set<DefaultControllerNode> members |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame] | 443 | = tabletMembers.getOrDefault(DEFAULT_TABLET, |
| 444 | Collections.emptySet()); |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 445 | // remove only if not the initial members |
| 446 | if (!members.contains(node)) { |
| 447 | synchronized (clusterConfig) { |
| 448 | if (clusterConfig.getMembers().contains(tcpMember)) { |
| 449 | log.info("{} was automatically removed from the cluster", tcpMember); |
| 450 | clusterConfig.removeRemoteMember(tcpMember); |
| 451 | } |
| 452 | } |
| 453 | } |
| 454 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 455 | break; |
| 456 | default: |
| 457 | break; |
| 458 | } |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 459 | if (copycat != null) { |
| 460 | log.debug("Current cluster: {}", copycat.cluster()); |
| 461 | } |
| 462 | clusterEventLatch.countDown(); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | } |
| 466 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 467 | @Override |
| 468 | public void removeMember(final ControllerNode node) { |
| 469 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
| 470 | node.tcpPort()); |
| 471 | log.info("{} was removed from the cluster", tcpMember); |
| 472 | synchronized (clusterConfig) { |
| 473 | clusterConfig.removeRemoteMember(tcpMember); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | @Override |
| 478 | public Collection<ControllerNode> listMembers() { |
| 479 | if (copycat == null) { |
| 480 | return ImmutableList.of(); |
| 481 | } |
| 482 | Set<ControllerNode> members = new HashSet<>(); |
| 483 | for (Member member : copycat.cluster().members()) { |
| 484 | if (member instanceof TcpMember) { |
| 485 | final TcpMember tcpMember = (TcpMember) member; |
| 486 | // TODO assuming tcpMember#host to be IP address, |
| 487 | // but if not lookup DNS, etc. first |
| 488 | IpAddress ip = IpAddress.valueOf(tcpMember.host()); |
| 489 | int tcpPort = tcpMember.port(); |
| 490 | NodeId id = getNodeIdFromIp(ip, tcpPort); |
| 491 | if (id == null) { |
| 492 | log.info("No NodeId found for {}:{}", ip, tcpPort); |
| 493 | continue; |
| 494 | } |
| 495 | members.add(new DefaultControllerNode(id, ip, tcpPort)); |
| 496 | } |
| 497 | } |
| 498 | return members; |
| 499 | } |
| 500 | |
| 501 | private NodeId getNodeIdFromIp(IpAddress ip, int tcpPort) { |
| 502 | for (ControllerNode node : clusterService.getNodes()) { |
| 503 | if (node.ip().equals(ip) && |
| 504 | node.tcpPort() == tcpPort) { |
| 505 | return node.id(); |
| 506 | } |
| 507 | } |
| 508 | return null; |
| 509 | } |
Madan Jampani | def2c65 | 2014-11-12 13:50:10 -0800 | [diff] [blame] | 510 | } |