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; |
| 6 | |
| 7 | import net.kuujo.copycat.protocol.PingRequest; |
| 8 | import net.kuujo.copycat.protocol.PollRequest; |
| 9 | import net.kuujo.copycat.protocol.RequestHandler; |
| 10 | import net.kuujo.copycat.protocol.SubmitRequest; |
| 11 | import net.kuujo.copycat.protocol.SyncRequest; |
| 12 | import net.kuujo.copycat.spi.protocol.ProtocolServer; |
| 13 | |
| 14 | import org.onlab.onos.store.cluster.messaging.ClusterCommunicationService; |
| 15 | import org.onlab.onos.store.cluster.messaging.ClusterMessage; |
| 16 | import org.onlab.onos.store.cluster.messaging.ClusterMessageHandler; |
| 17 | import org.slf4j.Logger; |
| 18 | |
| 19 | /** |
| 20 | * Licensed to the Apache Software Foundation (ASF) under one |
| 21 | * or more contributor license agreements. See the NOTICE file |
| 22 | * distributed with this work for additional information |
| 23 | * regarding copyright ownership. The ASF licenses this file |
| 24 | * to you under the Apache License, Version 2.0 (the |
| 25 | * "License"); you may not use this file except in compliance |
| 26 | * with the License. You may obtain a copy of the License at |
| 27 | * |
| 28 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 29 | |
| 30 | * Unless required by applicable law or agreed to in writing, |
| 31 | * software distributed under the License is distributed on an |
| 32 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 33 | * KIND, either express or implied. See the License for the |
| 34 | * specific language governing permissions and limitations under |
| 35 | * the License. |
| 36 | */ |
| 37 | |
| 38 | public class ClusterMessagingProtocolServer implements ProtocolServer { |
| 39 | |
| 40 | private final Logger log = getLogger(getClass()); |
| 41 | private RequestHandler handler; |
| 42 | |
| 43 | public ClusterMessagingProtocolServer(ClusterCommunicationService clusterCommunicator) { |
| 44 | |
| 45 | clusterCommunicator.addSubscriber( |
| 46 | ClusterMessagingProtocol.COPYCAT_PING, new CopycatMessageHandler<PingRequest>()); |
| 47 | clusterCommunicator.addSubscriber( |
| 48 | ClusterMessagingProtocol.COPYCAT_SYNC, new CopycatMessageHandler<SyncRequest>()); |
| 49 | clusterCommunicator.addSubscriber( |
| 50 | ClusterMessagingProtocol.COPYCAT_POLL, new CopycatMessageHandler<PollRequest>()); |
| 51 | clusterCommunicator.addSubscriber( |
| 52 | ClusterMessagingProtocol.COPYCAT_SUBMIT, new CopycatMessageHandler<SubmitRequest>()); |
| 53 | } |
| 54 | |
| 55 | @Override |
| 56 | public void requestHandler(RequestHandler handler) { |
| 57 | this.handler = handler; |
| 58 | } |
| 59 | |
| 60 | @Override |
| 61 | public CompletableFuture<Void> listen() { |
| 62 | return CompletableFuture.completedFuture(null); |
| 63 | } |
| 64 | |
| 65 | @Override |
| 66 | public CompletableFuture<Void> close() { |
| 67 | return CompletableFuture.completedFuture(null); |
| 68 | } |
| 69 | |
| 70 | private class CopycatMessageHandler<T> implements ClusterMessageHandler { |
| 71 | |
| 72 | @Override |
| 73 | public void handle(ClusterMessage message) { |
| 74 | T request = ClusterMessagingProtocol.SERIALIZER.decode(message.payload()); |
| 75 | if (request.getClass().equals(PingRequest.class)) { |
| 76 | handler.ping((PingRequest) request).whenComplete((response, error) -> { |
| 77 | try { |
| 78 | message.respond(ClusterMessagingProtocol.SERIALIZER.encode(response)); |
| 79 | } catch (Exception e) { |
| 80 | log.error("Failed to respond to ping request", e); |
| 81 | } |
| 82 | }); |
| 83 | } else if (request.getClass().equals(PollRequest.class)) { |
| 84 | handler.poll((PollRequest) request).whenComplete((response, error) -> { |
| 85 | try { |
| 86 | message.respond(ClusterMessagingProtocol.SERIALIZER.encode(response)); |
| 87 | } catch (Exception e) { |
| 88 | log.error("Failed to respond to poll request", e); |
| 89 | } |
| 90 | }); |
| 91 | } else if (request.getClass().equals(SyncRequest.class)) { |
| 92 | handler.sync((SyncRequest) request).whenComplete((response, error) -> { |
| 93 | try { |
| 94 | message.respond(ClusterMessagingProtocol.SERIALIZER.encode(response)); |
| 95 | } catch (Exception e) { |
| 96 | log.error("Failed to respond to sync request", e); |
| 97 | } |
| 98 | }); |
| 99 | } else if (request.getClass().equals(SubmitRequest.class)) { |
| 100 | handler.submit((SubmitRequest) request).whenComplete((response, error) -> { |
| 101 | try { |
| 102 | message.respond(ClusterMessagingProtocol.SERIALIZER.encode(response)); |
| 103 | } catch (Exception e) { |
| 104 | log.error("Failed to respond to submit request", e); |
| 105 | } |
| 106 | }); |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | } |