Ayaka Koshibe | 8583ff3 | 2014-10-02 16:25:30 -0700 | [diff] [blame^] | 1 | package org.onlab.onos.store.cluster.impl; |
| 2 | |
| 3 | import static org.junit.Assert.assertEquals; |
| 4 | import static org.junit.Assert.assertNull; |
| 5 | import static org.junit.Assert.assertTrue; |
| 6 | import static org.onlab.onos.net.MastershipRole.*; |
| 7 | |
| 8 | import java.util.Set; |
| 9 | |
| 10 | import org.junit.After; |
| 11 | import org.junit.AfterClass; |
| 12 | import org.junit.Before; |
| 13 | import org.junit.BeforeClass; |
| 14 | import org.junit.Test; |
| 15 | import org.onlab.onos.cluster.ClusterEventListener; |
| 16 | import org.onlab.onos.cluster.ClusterService; |
| 17 | import org.onlab.onos.cluster.ControllerNode; |
| 18 | import org.onlab.onos.cluster.ControllerNode.State; |
| 19 | import org.onlab.onos.cluster.DefaultControllerNode; |
| 20 | import org.onlab.onos.cluster.MastershipEvent.Type; |
| 21 | import org.onlab.onos.cluster.MastershipTerm; |
| 22 | import org.onlab.onos.cluster.NodeId; |
| 23 | import org.onlab.onos.net.DeviceId; |
| 24 | import org.onlab.onos.store.common.StoreManager; |
| 25 | import org.onlab.onos.store.common.StoreService; |
| 26 | import org.onlab.onos.store.common.TestStoreManager; |
| 27 | import org.onlab.onos.store.serializers.KryoSerializationManager; |
| 28 | import org.onlab.onos.store.serializers.KryoSerializationService; |
| 29 | import org.onlab.packet.IpPrefix; |
| 30 | |
| 31 | import com.google.common.collect.Sets; |
| 32 | import com.hazelcast.config.Config; |
| 33 | import com.hazelcast.core.Hazelcast; |
| 34 | |
| 35 | /** |
| 36 | * Test of the Hazelcast-based distributed MastershipStore implementation. |
| 37 | */ |
| 38 | public class DistributedMastershipStoreTest { |
| 39 | |
| 40 | private static final DeviceId DID1 = DeviceId.deviceId("of:01"); |
| 41 | private static final DeviceId DID2 = DeviceId.deviceId("of:02"); |
| 42 | private static final DeviceId DID3 = DeviceId.deviceId("of:03"); |
| 43 | private static final DeviceId DID4 = DeviceId.deviceId("of:04"); |
| 44 | |
| 45 | private static final IpPrefix IP = IpPrefix.valueOf("127.0.0.1"); |
| 46 | |
| 47 | private static final NodeId N1 = new NodeId("node1"); |
| 48 | private static final NodeId N2 = new NodeId("node2"); |
| 49 | |
| 50 | private static final ControllerNode CN1 = new DefaultControllerNode(N1, IP); |
| 51 | private static final ControllerNode CN2 = new DefaultControllerNode(N2, IP); |
| 52 | |
| 53 | private DistributedMastershipStore dms; |
| 54 | private TestDistributedMastershipStore testStore; |
| 55 | private KryoSerializationManager serializationMgr; |
| 56 | private StoreManager storeMgr; |
| 57 | |
| 58 | @BeforeClass |
| 59 | public static void setUpBeforeClass() throws Exception { |
| 60 | } |
| 61 | |
| 62 | @AfterClass |
| 63 | public static void tearDownAfterClass() throws Exception { |
| 64 | } |
| 65 | |
| 66 | @Before |
| 67 | public void setUp() throws Exception { |
| 68 | // TODO should find a way to clean Hazelcast instance without shutdown. |
| 69 | Config config = TestStoreManager.getTestConfig(); |
| 70 | |
| 71 | storeMgr = new TestStoreManager(Hazelcast.newHazelcastInstance(config)); |
| 72 | storeMgr.activate(); |
| 73 | |
| 74 | serializationMgr = new KryoSerializationManager(); |
| 75 | serializationMgr.activate(); |
| 76 | |
| 77 | dms = new TestDistributedMastershipStore(storeMgr, serializationMgr); |
| 78 | dms.clusterService = new TestClusterService(); |
| 79 | dms.activate(); |
| 80 | |
| 81 | testStore = (TestDistributedMastershipStore) dms; |
| 82 | } |
| 83 | |
| 84 | @After |
| 85 | public void tearDown() throws Exception { |
| 86 | dms.deactivate(); |
| 87 | |
| 88 | serializationMgr.deactivate(); |
| 89 | |
| 90 | storeMgr.deactivate(); |
| 91 | } |
| 92 | |
| 93 | @Test |
| 94 | public void getRole() { |
| 95 | assertEquals("wrong role:", NONE, dms.getRole(N1, DID1)); |
| 96 | testStore.put(DID1, N1, true, true, true); |
| 97 | assertEquals("wrong role:", MASTER, dms.getRole(N1, DID1)); |
| 98 | assertEquals("wrong role:", STANDBY, dms.getRole(N2, DID1)); |
| 99 | } |
| 100 | |
| 101 | @Test |
| 102 | public void getMaster() { |
| 103 | assertTrue("wrong store state:", dms.rawMasters.isEmpty()); |
| 104 | |
| 105 | testStore.put(DID1, N1, true, false, false); |
| 106 | assertEquals("wrong master:", N1, dms.getMaster(DID1)); |
| 107 | assertNull("wrong master:", dms.getMaster(DID2)); |
| 108 | } |
| 109 | |
| 110 | @Test |
| 111 | public void getDevices() { |
| 112 | assertTrue("wrong store state:", dms.rawMasters.isEmpty()); |
| 113 | |
| 114 | testStore.put(DID1, N1, true, false, false); |
| 115 | testStore.put(DID2, N1, true, false, false); |
| 116 | testStore.put(DID3, N2, true, false, false); |
| 117 | |
| 118 | assertEquals("wrong devices", |
| 119 | Sets.newHashSet(DID1, DID2), dms.getDevices(N1)); |
| 120 | } |
| 121 | |
| 122 | @Test |
| 123 | public void requestRoleAndTerm() { |
| 124 | //CN1 is "local" |
| 125 | testStore.setCurrent(CN1); |
| 126 | |
| 127 | //if already MASTER, nothing should happen |
| 128 | testStore.put(DID2, N1, true, false, false); |
| 129 | assertEquals("wrong role for MASTER:", MASTER, dms.requestRole(DID2)); |
| 130 | assertTrue("wrong state for store:", |
| 131 | dms.backups.isEmpty() & dms.rawTerms.isEmpty()); |
| 132 | |
| 133 | //populate maps with DID1, N1 thru NONE case |
| 134 | assertEquals("wrong role for NONE:", MASTER, dms.requestRole(DID1)); |
| 135 | assertTrue("wrong state for store:", |
| 136 | !dms.backups.isEmpty() & !dms.rawTerms.isEmpty()); |
| 137 | assertEquals("wrong term", |
| 138 | MastershipTerm.of(N1, 0), dms.getTermFor(DID1)); |
| 139 | |
| 140 | //CN2 now local. DID2 has N1 as MASTER so N2 is STANDBY |
| 141 | testStore.setCurrent(CN2); |
| 142 | assertEquals("wrong role for STANDBY:", STANDBY, dms.requestRole(DID2)); |
| 143 | assertEquals("wrong number of entries:", 2, dms.rawTerms.size()); |
| 144 | |
| 145 | //change term and requestRole() again; should persist |
| 146 | testStore.increment(DID2); |
| 147 | assertEquals("wrong role for STANDBY:", STANDBY, dms.requestRole(DID2)); |
| 148 | assertEquals("wrong term", MastershipTerm.of(N1, 1), dms.getTermFor(DID2)); |
| 149 | } |
| 150 | |
| 151 | @Test |
| 152 | public void setMaster() { |
| 153 | //populate maps with DID1, N1 as MASTER thru NONE case |
| 154 | testStore.setCurrent(CN1); |
| 155 | assertEquals("wrong role for NONE:", MASTER, dms.requestRole(DID1)); |
| 156 | assertNull("wrong event:", dms.setMaster(N1, DID1)); |
| 157 | |
| 158 | //switch over to N2 |
| 159 | assertEquals("wrong event:", Type.MASTER_CHANGED, dms.setMaster(N2, DID1).type()); |
| 160 | assertEquals("wrong term", MastershipTerm.of(N2, 1), dms.getTermFor(DID1)); |
| 161 | |
| 162 | //orphan switch - should be rare case |
| 163 | assertEquals("wrong event:", Type.MASTER_CHANGED, dms.setMaster(N2, DID2).type()); |
| 164 | assertEquals("wrong term", MastershipTerm.of(N2, 0), dms.getTermFor(DID2)); |
| 165 | //disconnect and reconnect - sign of failing re-election or single-instance channel |
| 166 | testStore.reset(true, false, false); |
| 167 | dms.setMaster(N2, DID2); |
| 168 | assertEquals("wrong term", MastershipTerm.of(N2, 1), dms.getTermFor(DID2)); |
| 169 | } |
| 170 | |
| 171 | @Test |
| 172 | public void unsetMaster() { |
| 173 | //populate maps with DID1, N1 as MASTER thru NONE case |
| 174 | testStore.setCurrent(CN1); |
| 175 | assertEquals("wrong role for NONE:", MASTER, dms.requestRole(DID1)); |
| 176 | //no backup, no new MASTER/event |
| 177 | assertNull("wrong event:", dms.unsetMaster(N1, DID1)); |
| 178 | //add backup CN2, get it elected MASTER |
| 179 | dms.requestRole(DID1); |
| 180 | testStore.setCurrent(CN2); |
| 181 | dms.requestRole(DID1); |
| 182 | assertEquals("wrong event:", Type.MASTER_CHANGED, dms.unsetMaster(N1, DID1).type()); |
| 183 | assertEquals("wrong master", N2, dms.getMaster(DID1)); |
| 184 | |
| 185 | //STANDBY - nothing here, either |
| 186 | assertNull("wrong event:", dms.unsetMaster(N1, DID1)); |
| 187 | assertEquals("wrong role for node:", STANDBY, dms.getRole(N1, DID1)); |
| 188 | |
| 189 | //NONE - nothing happens |
| 190 | assertNull("wrong event:", dms.unsetMaster(N1, DID2)); |
| 191 | assertEquals("wrong role for node:", NONE, dms.getRole(N1, DID2)); |
| 192 | } |
| 193 | |
| 194 | private class TestDistributedMastershipStore extends |
| 195 | DistributedMastershipStore { |
| 196 | public TestDistributedMastershipStore(StoreService storeService, |
| 197 | KryoSerializationService kryoSerializationService) { |
| 198 | this.storeService = storeService; |
| 199 | this.kryoSerializationService = kryoSerializationService; |
| 200 | } |
| 201 | |
| 202 | //helper to populate master/backup structures |
| 203 | public void put(DeviceId dev, NodeId node, |
| 204 | boolean store, boolean backup, boolean term) { |
| 205 | if (store) { |
| 206 | dms.rawMasters.put(serialize(dev), serialize(node)); |
| 207 | } |
| 208 | if (backup) { |
| 209 | dms.backups.put(serialize(node), (byte) 0); |
| 210 | } |
| 211 | if (term) { |
| 212 | dms.rawTerms.put(serialize(dev), 0); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | //clears structures |
| 217 | public void reset(boolean store, boolean backup, boolean term) { |
| 218 | if (store) { |
| 219 | dms.rawMasters.clear(); |
| 220 | } |
| 221 | if (backup) { |
| 222 | dms.backups.clear(); |
| 223 | } |
| 224 | if (term) { |
| 225 | dms.rawTerms.clear(); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | //increment term for a device |
| 230 | public void increment(DeviceId dev) { |
| 231 | Integer t = dms.rawTerms.get(serialize(dev)); |
| 232 | if (t != null) { |
| 233 | dms.rawTerms.put(serialize(dev), ++t); |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | //sets the "local" node |
| 238 | public void setCurrent(ControllerNode node) { |
| 239 | ((TestClusterService) clusterService).current = node; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | private class TestClusterService implements ClusterService { |
| 244 | |
| 245 | protected ControllerNode current; |
| 246 | |
| 247 | @Override |
| 248 | public ControllerNode getLocalNode() { |
| 249 | return current; |
| 250 | } |
| 251 | |
| 252 | @Override |
| 253 | public Set<ControllerNode> getNodes() { |
| 254 | return Sets.newHashSet(CN1, CN2); |
| 255 | } |
| 256 | |
| 257 | @Override |
| 258 | public ControllerNode getNode(NodeId nodeId) { |
| 259 | return null; |
| 260 | } |
| 261 | |
| 262 | @Override |
| 263 | public State getState(NodeId nodeId) { |
| 264 | return null; |
| 265 | } |
| 266 | |
| 267 | @Override |
| 268 | public void addListener(ClusterEventListener listener) { |
| 269 | } |
| 270 | |
| 271 | @Override |
| 272 | public void removeListener(ClusterEventListener listener) { |
| 273 | } |
| 274 | |
| 275 | } |
| 276 | } |