Hyunsun Moon | 2b53032 | 2015-09-23 13:24:35 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2014-2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.cordvtn; |
| 17 | |
| 18 | import org.apache.felix.scr.annotations.Activate; |
| 19 | import org.apache.felix.scr.annotations.Component; |
| 20 | import org.apache.felix.scr.annotations.Deactivate; |
| 21 | import org.apache.felix.scr.annotations.Reference; |
| 22 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 23 | import org.onosproject.cluster.ClusterService; |
| 24 | import org.onosproject.cluster.LeadershipEvent; |
| 25 | import org.onosproject.cluster.LeadershipEventListener; |
| 26 | import org.onosproject.cluster.LeadershipService; |
| 27 | import org.onosproject.cluster.NodeId; |
| 28 | import org.onosproject.core.ApplicationId; |
| 29 | import org.onosproject.core.CoreService; |
| 30 | import org.onosproject.net.config.ConfigFactory; |
| 31 | import org.onosproject.net.config.NetworkConfigEvent; |
| 32 | import org.onosproject.net.config.NetworkConfigListener; |
| 33 | import org.onosproject.net.config.NetworkConfigRegistry; |
| 34 | import org.onosproject.net.config.NetworkConfigService; |
| 35 | import org.onosproject.net.config.basics.SubjectFactories; |
| 36 | import org.slf4j.Logger; |
| 37 | |
| 38 | import static org.onosproject.cordvtn.OvsdbNode.State.INIT; |
| 39 | import static org.slf4j.LoggerFactory.getLogger; |
| 40 | |
| 41 | /** |
| 42 | * Reads node information from the network config file and handles the config |
| 43 | * update events. |
| 44 | * Only a leader controller performs the node addition or deletion. |
| 45 | */ |
| 46 | @Component(immediate = true) |
| 47 | public class CordVtnConfigManager { |
| 48 | |
| 49 | protected final Logger log = getLogger(getClass()); |
| 50 | |
| 51 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 52 | protected CoreService coreService; |
| 53 | |
| 54 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 55 | protected NetworkConfigRegistry configRegistry; |
| 56 | |
| 57 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 58 | protected NetworkConfigService configService; |
| 59 | |
| 60 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 61 | protected LeadershipService leadershipService; |
| 62 | |
| 63 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 64 | protected ClusterService clusterService; |
| 65 | |
| 66 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 67 | protected CordVtnService cordVtnService; |
| 68 | |
| 69 | private final ConfigFactory configFactory = |
| 70 | new ConfigFactory(SubjectFactories.APP_SUBJECT_FACTORY, CordVtnConfig.class, "cordvtn") { |
| 71 | @Override |
| 72 | public CordVtnConfig createConfig() { |
| 73 | return new CordVtnConfig(); |
| 74 | } |
| 75 | }; |
| 76 | |
| 77 | private final LeadershipEventListener leadershipListener = new InternalLeadershipListener(); |
| 78 | private final NetworkConfigListener configListener = new InternalConfigListener(); |
| 79 | |
| 80 | private NodeId local; |
| 81 | private ApplicationId appId; |
| 82 | |
| 83 | @Activate |
| 84 | protected void active() { |
| 85 | local = clusterService.getLocalNode().id(); |
| 86 | appId = coreService.getAppId(CordVtnService.CORDVTN_APP_ID); |
| 87 | |
| 88 | configService.addListener(configListener); |
| 89 | configRegistry.registerConfigFactory(configFactory); |
| 90 | |
| 91 | leadershipService.addListener(leadershipListener); |
| 92 | leadershipService.runForLeadership(CordVtnService.CORDVTN_APP_ID); |
| 93 | } |
| 94 | |
| 95 | @Deactivate |
| 96 | protected void deactivate() { |
| 97 | leadershipService.removeListener(leadershipListener); |
| 98 | leadershipService.withdraw(appId.name()); |
| 99 | |
| 100 | configRegistry.unregisterConfigFactory(configFactory); |
| 101 | configService.removeListener(configListener); |
| 102 | } |
| 103 | |
| 104 | private void readConfiguration() { |
| 105 | CordVtnConfig config = configRegistry.getConfig(appId, CordVtnConfig.class); |
| 106 | |
| 107 | if (config == null) { |
| 108 | log.warn("No configuration found"); |
| 109 | return; |
| 110 | } |
| 111 | |
| 112 | config.ovsdbNodes().forEach(node -> { |
| 113 | DefaultOvsdbNode ovsdbNode = |
| 114 | new DefaultOvsdbNode(node.host(), node.ip(), node.port(), INIT); |
| 115 | cordVtnService.addNode(ovsdbNode); |
| 116 | log.info("Add new node {}", node.host()); |
| 117 | }); |
| 118 | } |
| 119 | |
| 120 | private synchronized void processLeadershipChange(NodeId leader) { |
| 121 | if (leader == null || !leader.equals(local)) { |
| 122 | return; |
| 123 | } |
| 124 | readConfiguration(); |
| 125 | } |
| 126 | |
| 127 | private class InternalLeadershipListener implements LeadershipEventListener { |
| 128 | |
| 129 | @Override |
| 130 | public void event(LeadershipEvent event) { |
| 131 | if (event.subject().topic().equals(appId.name())) { |
| 132 | processLeadershipChange(event.subject().leader()); |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | private class InternalConfigListener implements NetworkConfigListener { |
| 138 | |
| 139 | @Override |
| 140 | public void event(NetworkConfigEvent event) { |
| 141 | // TODO handle update event |
| 142 | } |
| 143 | } |
| 144 | } |