Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 1 | package org.onlab.onos.store.service.impl; |
| 2 | |
Yuta HIGUCHI | a3982c1 | 2014-11-10 09:47:08 -0800 | [diff] [blame] | 3 | import static com.google.common.base.Verify.verifyNotNull; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 4 | import static org.slf4j.LoggerFactory.getLogger; |
Yuta HIGUCHI | a3982c1 | 2014-11-10 09:47:08 -0800 | [diff] [blame] | 5 | import static org.onlab.onos.store.service.impl.ClusterMessagingProtocol.SERIALIZER; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 6 | |
| 7 | import java.io.IOException; |
| 8 | import java.util.concurrent.CompletableFuture; |
| 9 | import java.util.concurrent.ExecutionException; |
| 10 | import java.util.concurrent.ScheduledExecutorService; |
| 11 | import java.util.concurrent.ScheduledThreadPoolExecutor; |
| 12 | import java.util.concurrent.ThreadFactory; |
| 13 | import java.util.concurrent.TimeUnit; |
| 14 | import java.util.concurrent.TimeoutException; |
| 15 | |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 16 | import net.kuujo.copycat.cluster.TcpMember; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 17 | import net.kuujo.copycat.protocol.PingRequest; |
| 18 | import net.kuujo.copycat.protocol.PingResponse; |
| 19 | import net.kuujo.copycat.protocol.PollRequest; |
| 20 | import net.kuujo.copycat.protocol.PollResponse; |
| 21 | import net.kuujo.copycat.protocol.SubmitRequest; |
| 22 | import net.kuujo.copycat.protocol.SubmitResponse; |
| 23 | import net.kuujo.copycat.protocol.SyncRequest; |
| 24 | import net.kuujo.copycat.protocol.SyncResponse; |
| 25 | import net.kuujo.copycat.spi.protocol.ProtocolClient; |
| 26 | |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 27 | import org.onlab.onos.cluster.ClusterEvent; |
| 28 | import org.onlab.onos.cluster.ClusterEventListener; |
| 29 | import org.onlab.onos.cluster.ClusterService; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 30 | import org.onlab.onos.cluster.ControllerNode; |
| 31 | import org.onlab.onos.store.cluster.messaging.ClusterCommunicationService; |
| 32 | import org.onlab.onos.store.cluster.messaging.ClusterMessage; |
| 33 | import org.onlab.onos.store.cluster.messaging.MessageSubject; |
| 34 | import org.slf4j.Logger; |
| 35 | |
| 36 | import com.google.common.util.concurrent.ThreadFactoryBuilder; |
| 37 | |
| 38 | /** |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 39 | * ONOS Cluster messaging based Copycat protocol client. |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 40 | */ |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 41 | public class ClusterMessagingProtocolClient implements ProtocolClient { |
| 42 | |
| 43 | private final Logger log = getLogger(getClass()); |
| 44 | |
| 45 | private static final ThreadFactory THREAD_FACTORY = |
| 46 | new ThreadFactoryBuilder().setNameFormat("copycat-netty-messaging-%d").build(); |
| 47 | |
| 48 | public static final long RETRY_INTERVAL_MILLIS = 2000; |
| 49 | |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 50 | private final ClusterService clusterService; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 51 | private final ClusterCommunicationService clusterCommunicator; |
Madan Jampani | 515865d | 2014-11-09 22:29:34 -0800 | [diff] [blame] | 52 | private final ControllerNode localNode; |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 53 | private final TcpMember remoteMember; |
| 54 | private ControllerNode remoteNode; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 55 | |
| 56 | // FIXME: Thread pool sizing. |
| 57 | private static final ScheduledExecutorService THREAD_POOL = |
| 58 | new ScheduledThreadPoolExecutor(10, THREAD_FACTORY); |
| 59 | |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 60 | private volatile CompletableFuture<Void> appeared; |
| 61 | |
| 62 | private volatile InternalClusterEventListener listener; |
| 63 | |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 64 | public ClusterMessagingProtocolClient( |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 65 | ClusterService clusterService, |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 66 | ClusterCommunicationService clusterCommunicator, |
Madan Jampani | 515865d | 2014-11-09 22:29:34 -0800 | [diff] [blame] | 67 | ControllerNode localNode, |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 68 | TcpMember remoteMember) { |
| 69 | |
| 70 | this.clusterService = clusterService; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 71 | this.clusterCommunicator = clusterCommunicator; |
Madan Jampani | 515865d | 2014-11-09 22:29:34 -0800 | [diff] [blame] | 72 | this.localNode = localNode; |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 73 | this.remoteMember = remoteMember; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | @Override |
| 77 | public CompletableFuture<PingResponse> ping(PingRequest request) { |
| 78 | return requestReply(request); |
| 79 | } |
| 80 | |
| 81 | @Override |
| 82 | public CompletableFuture<SyncResponse> sync(SyncRequest request) { |
| 83 | return requestReply(request); |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public CompletableFuture<PollResponse> poll(PollRequest request) { |
| 88 | return requestReply(request); |
| 89 | } |
| 90 | |
| 91 | @Override |
| 92 | public CompletableFuture<SubmitResponse> submit(SubmitRequest request) { |
| 93 | return requestReply(request); |
| 94 | } |
| 95 | |
| 96 | @Override |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 97 | public synchronized CompletableFuture<Void> connect() { |
| 98 | if (remoteNode != null) { |
| 99 | // done |
| 100 | return CompletableFuture.completedFuture(null); |
| 101 | } |
| 102 | |
| 103 | remoteNode = getControllerNode(remoteMember); |
| 104 | |
| 105 | if (remoteNode != null) { |
| 106 | // done |
| 107 | return CompletableFuture.completedFuture(null); |
| 108 | } |
| 109 | |
| 110 | if (appeared != null) { |
| 111 | // already waiting for member to appear |
| 112 | return appeared; |
| 113 | } |
| 114 | |
| 115 | appeared = new CompletableFuture<>(); |
| 116 | listener = new InternalClusterEventListener(); |
| 117 | clusterService.addListener(listener); |
| 118 | |
| 119 | // wait for specified controller node to come up |
| 120 | return null; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | @Override |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 124 | public synchronized CompletableFuture<Void> close() { |
| 125 | if (listener != null) { |
| 126 | clusterService.removeListener(listener); |
| 127 | listener = null; |
| 128 | } |
| 129 | if (appeared != null) { |
| 130 | appeared.cancel(true); |
| 131 | appeared = null; |
| 132 | } |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 133 | return CompletableFuture.completedFuture(null); |
| 134 | } |
| 135 | |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 136 | private synchronized void checkIfMemberAppeared() { |
| 137 | final ControllerNode controllerNode = getControllerNode(remoteMember); |
| 138 | if (controllerNode == null) { |
| 139 | // still not there: no-op |
| 140 | return; |
| 141 | } |
| 142 | |
| 143 | // found |
| 144 | remoteNode = controllerNode; |
| 145 | if (appeared != null) { |
| 146 | appeared.complete(null); |
| 147 | } |
| 148 | |
| 149 | if (listener != null) { |
| 150 | clusterService.removeListener(listener); |
| 151 | listener = null; |
| 152 | } |
| 153 | } |
| 154 | |
Yuta HIGUCHI | 3b01673 | 2014-11-07 15:32:18 -0800 | [diff] [blame] | 155 | private <I> MessageSubject messageType(I input) { |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 156 | Class<?> clazz = input.getClass(); |
| 157 | if (clazz.equals(PollRequest.class)) { |
| 158 | return ClusterMessagingProtocol.COPYCAT_POLL; |
| 159 | } else if (clazz.equals(SyncRequest.class)) { |
| 160 | return ClusterMessagingProtocol.COPYCAT_SYNC; |
| 161 | } else if (clazz.equals(SubmitRequest.class)) { |
| 162 | return ClusterMessagingProtocol.COPYCAT_SUBMIT; |
| 163 | } else if (clazz.equals(PingRequest.class)) { |
| 164 | return ClusterMessagingProtocol.COPYCAT_PING; |
| 165 | } else { |
| 166 | throw new IllegalArgumentException("Unknown class " + clazz.getName()); |
| 167 | } |
| 168 | |
| 169 | } |
| 170 | |
| 171 | private <I, O> CompletableFuture<O> requestReply(I request) { |
| 172 | CompletableFuture<O> future = new CompletableFuture<>(); |
| 173 | THREAD_POOL.schedule(new RPCTask<I, O>(request, future), 0, TimeUnit.MILLISECONDS); |
| 174 | return future; |
| 175 | } |
| 176 | |
Yuta HIGUCHI | 71b9d09 | 2014-11-12 13:31:11 -0800 | [diff] [blame^] | 177 | private ControllerNode getControllerNode(TcpMember remoteMember) { |
| 178 | final String host = remoteMember.host(); |
| 179 | final int port = remoteMember.port(); |
| 180 | for (ControllerNode node : clusterService.getNodes()) { |
| 181 | if (node.ip().toString().equals(host) && node.tcpPort() == port) { |
| 182 | return node; |
| 183 | } |
| 184 | } |
| 185 | return null; |
| 186 | } |
| 187 | |
| 188 | private final class InternalClusterEventListener |
| 189 | implements ClusterEventListener { |
| 190 | |
| 191 | public InternalClusterEventListener() { |
| 192 | } |
| 193 | |
| 194 | @Override |
| 195 | public void event(ClusterEvent event) { |
| 196 | checkIfMemberAppeared(); |
| 197 | } |
| 198 | |
| 199 | } |
| 200 | |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 201 | private class RPCTask<I, O> implements Runnable { |
| 202 | |
Yuta HIGUCHI | e59656d | 2014-11-07 01:57:32 -0800 | [diff] [blame] | 203 | private final I request; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 204 | private final ClusterMessage message; |
| 205 | private final CompletableFuture<O> future; |
| 206 | |
| 207 | public RPCTask(I request, CompletableFuture<O> future) { |
Yuta HIGUCHI | e59656d | 2014-11-07 01:57:32 -0800 | [diff] [blame] | 208 | this.request = request; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 209 | this.message = |
| 210 | new ClusterMessage( |
Madan Jampani | 515865d | 2014-11-09 22:29:34 -0800 | [diff] [blame] | 211 | localNode.id(), |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 212 | messageType(request), |
Yuta HIGUCHI | a3982c1 | 2014-11-10 09:47:08 -0800 | [diff] [blame] | 213 | verifyNotNull(SERIALIZER.encode(request))); |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 214 | this.future = future; |
| 215 | } |
| 216 | |
| 217 | @Override |
| 218 | public void run() { |
| 219 | try { |
| 220 | byte[] response = clusterCommunicator |
| 221 | .sendAndReceive(message, remoteNode.id()) |
| 222 | .get(RETRY_INTERVAL_MILLIS, TimeUnit.MILLISECONDS); |
Yuta HIGUCHI | a3982c1 | 2014-11-10 09:47:08 -0800 | [diff] [blame] | 223 | future.complete(verifyNotNull(SERIALIZER.decode(response))); |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 224 | |
| 225 | } catch (IOException | InterruptedException | ExecutionException | TimeoutException e) { |
Madan Jampani | 515865d | 2014-11-09 22:29:34 -0800 | [diff] [blame] | 226 | log.warn("RPCTask for {} failed.", request, e); |
| 227 | future.completeExceptionally(e); |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 228 | } catch (Exception e) { |
Yuta HIGUCHI | 9bbaca3 | 2014-11-07 13:08:31 -0800 | [diff] [blame] | 229 | log.warn("RPCTask for {} terribly failed.", request, e); |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 230 | future.completeExceptionally(e); |
| 231 | } |
| 232 | } |
| 233 | } |
Madan Jampani | 515865d | 2014-11-09 22:29:34 -0800 | [diff] [blame] | 234 | } |