Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 1 | package org.onlab.onos.store.service.impl; |
| 2 | |
| 3 | import static org.slf4j.LoggerFactory.getLogger; |
| 4 | |
| 5 | import java.util.concurrent.CompletableFuture; |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 6 | import java.util.function.BiConsumer; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 7 | |
| 8 | import net.kuujo.copycat.protocol.PingRequest; |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 9 | import net.kuujo.copycat.protocol.PingResponse; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 10 | import net.kuujo.copycat.protocol.PollRequest; |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 11 | import net.kuujo.copycat.protocol.PollResponse; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 12 | import net.kuujo.copycat.protocol.RequestHandler; |
| 13 | import net.kuujo.copycat.protocol.SubmitRequest; |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 14 | import net.kuujo.copycat.protocol.SubmitResponse; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 15 | import net.kuujo.copycat.protocol.SyncRequest; |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 16 | import net.kuujo.copycat.protocol.SyncResponse; |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 17 | import net.kuujo.copycat.spi.protocol.ProtocolServer; |
| 18 | |
| 19 | import org.onlab.onos.store.cluster.messaging.ClusterCommunicationService; |
| 20 | import org.onlab.onos.store.cluster.messaging.ClusterMessage; |
| 21 | import org.onlab.onos.store.cluster.messaging.ClusterMessageHandler; |
| 22 | import org.slf4j.Logger; |
| 23 | |
| 24 | /** |
Madan Jampani | dfbfa18 | 2014-11-04 22:06:41 -0800 | [diff] [blame] | 25 | * ONOS Cluster messaging based Copycat protocol server. |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 26 | */ |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 27 | public class ClusterMessagingProtocolServer implements ProtocolServer { |
| 28 | |
| 29 | private final Logger log = getLogger(getClass()); |
| 30 | private RequestHandler handler; |
| 31 | |
| 32 | public ClusterMessagingProtocolServer(ClusterCommunicationService clusterCommunicator) { |
| 33 | |
| 34 | clusterCommunicator.addSubscriber( |
| 35 | ClusterMessagingProtocol.COPYCAT_PING, new CopycatMessageHandler<PingRequest>()); |
| 36 | clusterCommunicator.addSubscriber( |
| 37 | ClusterMessagingProtocol.COPYCAT_SYNC, new CopycatMessageHandler<SyncRequest>()); |
| 38 | clusterCommunicator.addSubscriber( |
| 39 | ClusterMessagingProtocol.COPYCAT_POLL, new CopycatMessageHandler<PollRequest>()); |
| 40 | clusterCommunicator.addSubscriber( |
| 41 | ClusterMessagingProtocol.COPYCAT_SUBMIT, new CopycatMessageHandler<SubmitRequest>()); |
| 42 | } |
| 43 | |
| 44 | @Override |
| 45 | public void requestHandler(RequestHandler handler) { |
| 46 | this.handler = handler; |
| 47 | } |
| 48 | |
| 49 | @Override |
| 50 | public CompletableFuture<Void> listen() { |
| 51 | return CompletableFuture.completedFuture(null); |
| 52 | } |
| 53 | |
| 54 | @Override |
| 55 | public CompletableFuture<Void> close() { |
| 56 | return CompletableFuture.completedFuture(null); |
| 57 | } |
| 58 | |
| 59 | private class CopycatMessageHandler<T> implements ClusterMessageHandler { |
| 60 | |
| 61 | @Override |
| 62 | public void handle(ClusterMessage message) { |
| 63 | T request = ClusterMessagingProtocol.SERIALIZER.decode(message.payload()); |
| 64 | if (request.getClass().equals(PingRequest.class)) { |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 65 | handler.ping((PingRequest) request).whenComplete(new PostExecutionTask<PingResponse>(message)); |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 66 | } else if (request.getClass().equals(PollRequest.class)) { |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 67 | handler.poll((PollRequest) request).whenComplete(new PostExecutionTask<PollResponse>(message)); |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 68 | } else if (request.getClass().equals(SyncRequest.class)) { |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 69 | handler.sync((SyncRequest) request).whenComplete(new PostExecutionTask<SyncResponse>(message)); |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 70 | } else if (request.getClass().equals(SubmitRequest.class)) { |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 71 | handler.submit((SubmitRequest) request).whenComplete(new PostExecutionTask<SubmitResponse>(message)); |
| 72 | } else { |
| 73 | throw new IllegalStateException("Unknown request type: " + request.getClass().getName()); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | private class PostExecutionTask<R> implements BiConsumer<R, Throwable> { |
| 78 | |
| 79 | private final ClusterMessage message; |
| 80 | |
| 81 | public PostExecutionTask(ClusterMessage message) { |
| 82 | this.message = message; |
| 83 | } |
| 84 | |
| 85 | @Override |
| 86 | public void accept(R response, Throwable t) { |
| 87 | if (t != null) { |
| 88 | log.error("Processing for " + message.subject() + " failed.", t); |
| 89 | } else { |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 90 | try { |
| 91 | message.respond(ClusterMessagingProtocol.SERIALIZER.encode(response)); |
| 92 | } catch (Exception e) { |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 93 | log.error("Failed to respond to " + response.getClass().getName(), e); |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 94 | } |
Madan Jampani | 778f7ad | 2014-11-05 22:46:15 -0800 | [diff] [blame^] | 95 | } |
Madan Jampani | 9b19a82 | 2014-11-04 21:37:13 -0800 | [diff] [blame] | 96 | } |
| 97 | } |
| 98 | } |
| 99 | } |