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; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 7 | import java.util.ArrayList; |
| 8 | import java.util.Arrays; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 9 | import java.util.Collection; |
| 10 | import java.util.Collections; |
| 11 | import java.util.HashSet; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 12 | import java.util.List; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 13 | import java.util.Map; |
| 14 | import java.util.Set; |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 15 | import java.util.concurrent.CountDownLatch; |
| 16 | import java.util.concurrent.TimeUnit; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 17 | |
| 18 | import net.kuujo.copycat.Copycat; |
| 19 | import net.kuujo.copycat.StateMachine; |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 20 | import net.kuujo.copycat.cluster.ClusterConfig; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 21 | import net.kuujo.copycat.cluster.Member; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 22 | import net.kuujo.copycat.cluster.TcpCluster; |
| 23 | import net.kuujo.copycat.cluster.TcpClusterConfig; |
| 24 | import net.kuujo.copycat.cluster.TcpMember; |
Yuta HIGUCHI | 0c1c100 | 2014-11-05 13:47:25 -0800 | [diff] [blame] | 25 | import net.kuujo.copycat.log.InMemoryLog; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 26 | import net.kuujo.copycat.log.Log; |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 27 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 28 | import org.apache.felix.scr.annotations.Activate; |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 29 | import org.apache.felix.scr.annotations.Component; |
Yuta HIGUCHI | 657626e | 2014-11-04 20:54:58 -0800 | [diff] [blame] | 30 | import org.apache.felix.scr.annotations.Deactivate; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 31 | import org.apache.felix.scr.annotations.Reference; |
| 32 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 33 | import org.apache.felix.scr.annotations.Service; |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 34 | import org.onlab.onos.cluster.ClusterEvent; |
| 35 | import org.onlab.onos.cluster.ClusterEventListener; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 36 | import org.onlab.onos.cluster.ClusterService; |
| 37 | import org.onlab.onos.cluster.ControllerNode; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 38 | import org.onlab.onos.cluster.DefaultControllerNode; |
| 39 | import org.onlab.onos.cluster.NodeId; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 40 | import org.onlab.onos.store.service.DatabaseAdminService; |
| 41 | import org.onlab.onos.store.service.DatabaseException; |
| 42 | import org.onlab.onos.store.service.DatabaseService; |
| 43 | import org.onlab.onos.store.service.NoSuchTableException; |
| 44 | import org.onlab.onos.store.service.OptimisticLockException; |
| 45 | import org.onlab.onos.store.service.OptionalResult; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 46 | import org.onlab.onos.store.service.ReadRequest; |
| 47 | import org.onlab.onos.store.service.ReadResult; |
| 48 | import org.onlab.onos.store.service.WriteAborted; |
| 49 | import org.onlab.onos.store.service.WriteRequest; |
| 50 | import org.onlab.onos.store.service.WriteResult; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 51 | import org.onlab.packet.IpAddress; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 52 | import org.slf4j.Logger; |
| 53 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 54 | import com.google.common.collect.ImmutableList; |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 55 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 56 | /** |
| 57 | * Strongly consistent and durable state management service based on |
| 58 | * Copycat implementation of Raft consensus protocol. |
| 59 | */ |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 60 | @Component(immediate = true) |
| 61 | @Service |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 62 | public class DatabaseManager implements DatabaseService, DatabaseAdminService { |
| 63 | |
| 64 | private final Logger log = getLogger(getClass()); |
| 65 | |
| 66 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Yuta HIGUCHI | 5001ba9 | 2014-11-04 21:33:54 -0800 | [diff] [blame] | 67 | protected ClusterService clusterService; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 68 | |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 69 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Yuta HIGUCHI | 0c1c100 | 2014-11-05 13:47:25 -0800 | [diff] [blame] | 70 | protected DatabaseProtocolService copycatMessagingProtocol; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 71 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 72 | public static final String LOG_FILE_PREFIX = "/tmp/onos-copy-cat-log_"; |
| 73 | |
| 74 | // Current working dir seems to be /opt/onos/apache-karaf-3.0.2 |
| 75 | // TODO: Get the path to /opt/onos/config |
| 76 | private static final String CONFIG_DIR = "../config"; |
| 77 | |
| 78 | private static final String DEFAULT_MEMBER_FILE = "tablets.json"; |
| 79 | |
| 80 | private static final String DEFAULT_TABLET = "default"; |
| 81 | |
| 82 | // TODO: make this configurable |
| 83 | // initial member configuration file path |
| 84 | private String initialMemberConfig = DEFAULT_MEMBER_FILE; |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 85 | |
| 86 | private Copycat copycat; |
| 87 | private DatabaseClient client; |
| 88 | |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 89 | // guarded by synchronized block |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 90 | private ClusterConfig<TcpMember> clusterConfig; |
| 91 | |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 92 | private CountDownLatch clusterEventLatch; |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 93 | private ClusterEventListener clusterEventListener; |
| 94 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 95 | private Map<String, Set<DefaultControllerNode>> tabletMembers; |
| 96 | |
| 97 | private boolean autoAddMember = false; |
| 98 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 99 | @Activate |
| 100 | public void activate() { |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 101 | |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 102 | // TODO: Not every node should be part of the consensus ring. |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 103 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 104 | // load tablet configuration |
| 105 | File file = new File(CONFIG_DIR, initialMemberConfig); |
| 106 | log.info("Loading config: {}", file.getAbsolutePath()); |
| 107 | TabletDefinitionStore tabletDef = new TabletDefinitionStore(file); |
| 108 | try { |
| 109 | tabletMembers = tabletDef.read(); |
| 110 | } catch (IOException e) { |
| 111 | log.error("Failed to load tablet config {}", file); |
| 112 | throw new IllegalStateException("Failed to load tablet config", e); |
| 113 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 114 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 115 | // load default tablet configuration and start copycat |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 116 | clusterConfig = new TcpClusterConfig(); |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 117 | Set<DefaultControllerNode> defaultMember = tabletMembers.get(DEFAULT_TABLET); |
| 118 | if (defaultMember == null || defaultMember.isEmpty()) { |
| 119 | log.error("No member found in [{}] tablet configuration.", |
| 120 | DEFAULT_TABLET); |
| 121 | throw new IllegalStateException("No member found in tablet configuration"); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 122 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 123 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 124 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 125 | final ControllerNode localNode = clusterService.getLocalNode(); |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 126 | for (ControllerNode member : defaultMember) { |
| 127 | final TcpMember tcpMember = new TcpMember(member.ip().toString(), |
| 128 | member.tcpPort()); |
| 129 | if (localNode.equals(member)) { |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 130 | clusterConfig.setLocalMember(tcpMember); |
| 131 | } else { |
| 132 | clusterConfig.addRemoteMember(tcpMember); |
| 133 | } |
| 134 | } |
| 135 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 136 | // note: from this point beyond, clusterConfig requires synchronization |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 137 | clusterEventLatch = new CountDownLatch(1); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 138 | clusterEventListener = new InternalClusterEventListener(); |
| 139 | clusterService.addListener(clusterEventListener); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 140 | |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 141 | if (clusterService.getNodes().size() < clusterConfig.getMembers().size()) { |
| 142 | // current cluster size smaller then expected |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 143 | try { |
| 144 | if (!clusterEventLatch.await(120, TimeUnit.SECONDS)) { |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 145 | log.info("Starting with {}/{} nodes cluster", |
| 146 | clusterService.getNodes().size(), |
| 147 | clusterConfig.getMembers().size()); |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 148 | } |
| 149 | } catch (InterruptedException e) { |
| 150 | log.info("Interrupted waiting for others", e); |
| 151 | } |
| 152 | } |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 153 | |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 154 | final TcpCluster cluster; |
| 155 | synchronized (clusterConfig) { |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 156 | // Create the cluster. |
| 157 | cluster = new TcpCluster(clusterConfig); |
| 158 | } |
| 159 | log.info("Starting cluster: {}", cluster); |
| 160 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 161 | |
| 162 | StateMachine stateMachine = new DatabaseStateMachine(); |
Madan Jampani | 2ee2000 | 2014-11-06 20:06:12 -0800 | [diff] [blame] | 163 | Log consensusLog = new MapDBLog(LOG_FILE_PREFIX + localNode.id(), |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 164 | ClusterMessagingProtocol.SERIALIZER); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 165 | |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 166 | copycat = new Copycat(stateMachine, consensusLog, cluster, copycatMessagingProtocol); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 167 | copycat.start(); |
| 168 | |
Yuta HIGUCHI | f846844 | 2014-11-11 10:09:20 -0800 | [diff] [blame^] | 169 | client = new DatabaseClient(copycat); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 170 | |
| 171 | log.info("Started."); |
| 172 | } |
| 173 | |
Yuta HIGUCHI | 657626e | 2014-11-04 20:54:58 -0800 | [diff] [blame] | 174 | @Deactivate |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 175 | public void deactivate() { |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 176 | clusterService.removeListener(clusterEventListener); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 177 | copycat.stop(); |
Yuta HIGUCHI | 657626e | 2014-11-04 20:54:58 -0800 | [diff] [blame] | 178 | log.info("Stopped."); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public boolean createTable(String name) { |
| 183 | return client.createTable(name); |
| 184 | } |
| 185 | |
| 186 | @Override |
| 187 | public void dropTable(String name) { |
| 188 | client.dropTable(name); |
| 189 | } |
| 190 | |
| 191 | @Override |
| 192 | public void dropAllTables() { |
| 193 | client.dropAllTables(); |
| 194 | } |
| 195 | |
| 196 | @Override |
| 197 | public List<String> listTables() { |
| 198 | return client.listTables(); |
| 199 | } |
| 200 | |
| 201 | @Override |
| 202 | public ReadResult read(ReadRequest request) { |
| 203 | return batchRead(Arrays.asList(request)).get(0).get(); |
| 204 | } |
| 205 | |
| 206 | @Override |
| 207 | public List<OptionalResult<ReadResult, DatabaseException>> batchRead( |
| 208 | List<ReadRequest> batch) { |
| 209 | List<OptionalResult<ReadResult, DatabaseException>> readResults = new ArrayList<>(batch.size()); |
| 210 | for (InternalReadResult internalReadResult : client.batchRead(batch)) { |
| 211 | if (internalReadResult.status() == InternalReadResult.Status.NO_SUCH_TABLE) { |
| 212 | readResults.add(new DatabaseOperationResult<ReadResult, DatabaseException>( |
| 213 | new NoSuchTableException())); |
| 214 | } else { |
| 215 | readResults.add(new DatabaseOperationResult<ReadResult, DatabaseException>( |
| 216 | internalReadResult.result())); |
| 217 | } |
| 218 | } |
| 219 | return readResults; |
| 220 | } |
| 221 | |
| 222 | @Override |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 223 | public OptionalResult<WriteResult, DatabaseException> writeNothrow(WriteRequest request) { |
| 224 | return batchWrite(Arrays.asList(request)).get(0); |
| 225 | } |
| 226 | |
| 227 | @Override |
Yuta HIGUCHI | c6b8f61 | 2014-11-06 19:04:13 -0800 | [diff] [blame] | 228 | public WriteResult write(WriteRequest request) { |
| 229 | // throws OptimisticLockException, PreconditionFailedException { |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 230 | return writeNothrow(request).get(); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 231 | } |
| 232 | |
| 233 | @Override |
| 234 | public List<OptionalResult<WriteResult, DatabaseException>> batchWrite( |
| 235 | List<WriteRequest> batch) { |
| 236 | List<OptionalResult<WriteResult, DatabaseException>> writeResults = new ArrayList<>(batch.size()); |
| 237 | for (InternalWriteResult internalWriteResult : client.batchWrite(batch)) { |
| 238 | if (internalWriteResult.status() == InternalWriteResult.Status.NO_SUCH_TABLE) { |
| 239 | writeResults.add(new DatabaseOperationResult<WriteResult, DatabaseException>( |
| 240 | new NoSuchTableException())); |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 241 | } else if (internalWriteResult.status() == InternalWriteResult.Status.PREVIOUS_VERSION_MISMATCH) { |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 242 | writeResults.add(new DatabaseOperationResult<WriteResult, DatabaseException>( |
| 243 | new OptimisticLockException())); |
| 244 | } else if (internalWriteResult.status() == InternalWriteResult.Status.PREVIOUS_VALUE_MISMATCH) { |
| 245 | // TODO: throw a different exception? |
| 246 | writeResults.add(new DatabaseOperationResult<WriteResult, DatabaseException>( |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 247 | new OptimisticLockException())); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 248 | } else if (internalWriteResult.status() == InternalWriteResult.Status.ABORTED) { |
| 249 | writeResults.add(new DatabaseOperationResult<WriteResult, DatabaseException>( |
| 250 | new WriteAborted())); |
| 251 | } else { |
| 252 | writeResults.add(new DatabaseOperationResult<WriteResult, DatabaseException>( |
| 253 | internalWriteResult.result())); |
| 254 | } |
| 255 | } |
| 256 | return writeResults; |
| 257 | |
| 258 | } |
| 259 | |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 260 | private final class InternalClusterEventListener |
| 261 | implements ClusterEventListener { |
| 262 | |
| 263 | @Override |
| 264 | public void event(ClusterEvent event) { |
| 265 | // TODO: Not every node should be part of the consensus ring. |
| 266 | |
| 267 | final ControllerNode node = event.subject(); |
| 268 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
| 269 | node.tcpPort()); |
| 270 | |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 271 | switch (event.type()) { |
| 272 | case INSTANCE_ACTIVATED: |
| 273 | case INSTANCE_ADDED: |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 274 | if (autoAddMember) { |
| 275 | synchronized (clusterConfig) { |
| 276 | if (!clusterConfig.getMembers().contains(tcpMember)) { |
| 277 | log.info("{} was automatically added to the cluster", tcpMember); |
| 278 | clusterConfig.addRemoteMember(tcpMember); |
| 279 | } |
| 280 | } |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 281 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 282 | break; |
| 283 | case INSTANCE_DEACTIVATED: |
| 284 | case INSTANCE_REMOVED: |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 285 | if (autoAddMember) { |
| 286 | Set<DefaultControllerNode> members |
| 287 | = tabletMembers.getOrDefault(DEFAULT_TABLET, |
| 288 | Collections.emptySet()); |
| 289 | // remove only if not the initial members |
| 290 | if (!members.contains(node)) { |
| 291 | synchronized (clusterConfig) { |
| 292 | if (clusterConfig.getMembers().contains(tcpMember)) { |
| 293 | log.info("{} was automatically removed from the cluster", tcpMember); |
| 294 | clusterConfig.removeRemoteMember(tcpMember); |
| 295 | } |
| 296 | } |
| 297 | } |
| 298 | } |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 299 | break; |
| 300 | default: |
| 301 | break; |
| 302 | } |
Yuta HIGUCHI | 79a1e5e | 2014-11-05 17:42:01 -0800 | [diff] [blame] | 303 | if (copycat != null) { |
| 304 | log.debug("Current cluster: {}", copycat.cluster()); |
| 305 | } |
| 306 | clusterEventLatch.countDown(); |
Yuta HIGUCHI | 5027b6b | 2014-11-05 16:23:26 -0800 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | } |
| 310 | |
| 311 | public static final class KryoRegisteredInMemoryLog extends InMemoryLog { |
| 312 | public KryoRegisteredInMemoryLog() { |
| 313 | super(); |
| 314 | // required to deserialize object across bundles |
| 315 | super.kryo.register(TcpMember.class, new TcpMemberSerializer()); |
| 316 | super.kryo.register(TcpClusterConfig.class, new TcpClusterConfigSerializer()); |
| 317 | } |
| 318 | } |
| 319 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 320 | private class DatabaseOperationResult<R, E extends DatabaseException> implements OptionalResult<R, E> { |
| 321 | |
| 322 | private final R result; |
| 323 | private final DatabaseException exception; |
| 324 | |
| 325 | public DatabaseOperationResult(R result) { |
| 326 | this.result = result; |
| 327 | this.exception = null; |
| 328 | } |
| 329 | |
| 330 | public DatabaseOperationResult(DatabaseException exception) { |
| 331 | this.result = null; |
| 332 | this.exception = exception; |
| 333 | } |
| 334 | |
| 335 | @Override |
| 336 | public R get() { |
| 337 | if (result != null) { |
| 338 | return result; |
| 339 | } |
| 340 | throw exception; |
| 341 | } |
| 342 | |
| 343 | @Override |
| 344 | public boolean hasValidResult() { |
| 345 | return result != null; |
| 346 | } |
| 347 | |
| 348 | @Override |
| 349 | public String toString() { |
| 350 | if (result != null) { |
| 351 | return result.toString(); |
| 352 | } else { |
| 353 | return exception.toString(); |
| 354 | } |
| 355 | } |
| 356 | } |
Yuta HIGUCHI | 60731cb | 2014-11-11 01:34:46 -0800 | [diff] [blame] | 357 | |
| 358 | @Override |
| 359 | public void addMember(final ControllerNode node) { |
| 360 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
| 361 | node.tcpPort()); |
| 362 | log.info("{} was added to the cluster", tcpMember); |
| 363 | synchronized (clusterConfig) { |
| 364 | clusterConfig.addRemoteMember(tcpMember); |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | @Override |
| 369 | public void removeMember(final ControllerNode node) { |
| 370 | final TcpMember tcpMember = new TcpMember(node.ip().toString(), |
| 371 | node.tcpPort()); |
| 372 | log.info("{} was removed from the cluster", tcpMember); |
| 373 | synchronized (clusterConfig) { |
| 374 | clusterConfig.removeRemoteMember(tcpMember); |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | @Override |
| 379 | public Collection<ControllerNode> listMembers() { |
| 380 | if (copycat == null) { |
| 381 | return ImmutableList.of(); |
| 382 | } |
| 383 | Set<ControllerNode> members = new HashSet<>(); |
| 384 | for (Member member : copycat.cluster().members()) { |
| 385 | if (member instanceof TcpMember) { |
| 386 | final TcpMember tcpMember = (TcpMember) member; |
| 387 | // TODO assuming tcpMember#host to be IP address, |
| 388 | // but if not lookup DNS, etc. first |
| 389 | IpAddress ip = IpAddress.valueOf(tcpMember.host()); |
| 390 | int tcpPort = tcpMember.port(); |
| 391 | NodeId id = getNodeIdFromIp(ip, tcpPort); |
| 392 | if (id == null) { |
| 393 | log.info("No NodeId found for {}:{}", ip, tcpPort); |
| 394 | continue; |
| 395 | } |
| 396 | members.add(new DefaultControllerNode(id, ip, tcpPort)); |
| 397 | } |
| 398 | } |
| 399 | return members; |
| 400 | } |
| 401 | |
| 402 | private NodeId getNodeIdFromIp(IpAddress ip, int tcpPort) { |
| 403 | for (ControllerNode node : clusterService.getNodes()) { |
| 404 | if (node.ip().equals(ip) && |
| 405 | node.tcpPort() == tcpPort) { |
| 406 | return node.id(); |
| 407 | } |
| 408 | } |
| 409 | return null; |
| 410 | } |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 411 | } |