Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2016 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.store.primitives.resources.impl; |
| 17 | |
| 18 | import java.util.LinkedList; |
| 19 | import java.util.Queue; |
| 20 | import java.util.concurrent.CompletableFuture; |
| 21 | import java.util.function.Consumer; |
| 22 | |
| 23 | import org.junit.Test; |
| 24 | |
| 25 | import static org.junit.Assert.*; |
| 26 | |
| 27 | import org.onosproject.cluster.Leadership; |
| 28 | import org.onosproject.cluster.NodeId; |
| 29 | import org.onosproject.event.Change; |
| 30 | |
| 31 | import io.atomix.Atomix; |
| 32 | import io.atomix.resource.ResourceType; |
| 33 | |
| 34 | /** |
| 35 | * Unit tests for {@link AtomixLeaderElector}. |
| 36 | */ |
| 37 | public class AtomixLeaderElectorTest extends AtomixTestBase { |
| 38 | |
| 39 | NodeId node1 = new NodeId("node1"); |
| 40 | NodeId node2 = new NodeId("node2"); |
| 41 | NodeId node3 = new NodeId("node3"); |
| 42 | |
| 43 | @Override |
| 44 | protected ResourceType resourceType() { |
| 45 | return new ResourceType(AtomixLeaderElector.class); |
| 46 | } |
| 47 | |
| 48 | @Test |
| 49 | public void testRun() throws Throwable { |
| 50 | leaderElectorRunTests(1); |
| 51 | clearTests(); |
| 52 | // leaderElectorRunTests(2); |
| 53 | // clearTests(); |
| 54 | // leaderElectorRunTests(3); |
| 55 | // clearTests(); |
| 56 | } |
| 57 | |
| 58 | private void leaderElectorRunTests(int numServers) throws Throwable { |
| 59 | createCopycatServers(numServers); |
| 60 | Atomix client1 = createAtomixClient(); |
| 61 | AtomixLeaderElector elector1 = client1.get("test-elector", AtomixLeaderElector.class).join(); |
| 62 | elector1.run("foo", node1).thenAccept(result -> { |
| 63 | assertEquals(node1, result.leaderNodeId()); |
| 64 | assertEquals(1, result.leader().term()); |
| 65 | assertEquals(1, result.candidates().size()); |
| 66 | assertEquals(node1, result.candidates().get(0)); |
| 67 | }).join(); |
| 68 | Atomix client2 = createAtomixClient(); |
| 69 | AtomixLeaderElector elector2 = client2.get("test-elector", AtomixLeaderElector.class).join(); |
| 70 | elector2.run("foo", node2).thenAccept(result -> { |
| 71 | assertEquals(node1, result.leaderNodeId()); |
| 72 | assertEquals(1, result.leader().term()); |
| 73 | assertEquals(2, result.candidates().size()); |
| 74 | assertEquals(node1, result.candidates().get(0)); |
| 75 | assertEquals(node2, result.candidates().get(1)); |
| 76 | }).join(); |
| 77 | } |
| 78 | |
| 79 | @Test |
| 80 | public void testWithdraw() throws Throwable { |
| 81 | leaderElectorWithdrawTests(1); |
| 82 | clearTests(); |
| 83 | leaderElectorWithdrawTests(2); |
| 84 | clearTests(); |
| 85 | leaderElectorWithdrawTests(3); |
| 86 | clearTests(); |
| 87 | } |
| 88 | |
| 89 | private void leaderElectorWithdrawTests(int numServers) throws Throwable { |
| 90 | createCopycatServers(numServers); |
| 91 | Atomix client1 = createAtomixClient(); |
| 92 | AtomixLeaderElector elector1 = client1.get("test-elector", AtomixLeaderElector.class).join(); |
| 93 | elector1.run("foo", node1).join(); |
| 94 | Atomix client2 = createAtomixClient(); |
| 95 | AtomixLeaderElector elector2 = client2.get("test-elector", AtomixLeaderElector.class).join(); |
| 96 | elector2.run("foo", node2).join(); |
| 97 | |
| 98 | LeaderEventListener listener1 = new LeaderEventListener(); |
| 99 | elector1.addChangeListener(listener1).join(); |
| 100 | |
| 101 | LeaderEventListener listener2 = new LeaderEventListener(); |
| 102 | elector2.addChangeListener(listener2).join(); |
| 103 | |
| 104 | elector1.withdraw("foo").join(); |
| 105 | |
| 106 | listener1.nextEvent().thenAccept(result -> { |
| 107 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 108 | assertEquals(2, result.newValue().leader().term()); |
| 109 | assertEquals(1, result.newValue().candidates().size()); |
| 110 | assertEquals(node2, result.newValue().candidates().get(0)); |
| 111 | }).join(); |
| 112 | |
| 113 | listener2.nextEvent().thenAccept(result -> { |
| 114 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 115 | assertEquals(2, result.newValue().leader().term()); |
| 116 | assertEquals(1, result.newValue().candidates().size()); |
| 117 | assertEquals(node2, result.newValue().candidates().get(0)); |
| 118 | }).join(); |
| 119 | } |
| 120 | |
| 121 | @Test |
| 122 | public void testAnoint() throws Throwable { |
| 123 | leaderElectorAnointTests(1); |
| 124 | clearTests(); |
| 125 | leaderElectorAnointTests(2); |
| 126 | clearTests(); |
| 127 | leaderElectorAnointTests(3); |
| 128 | clearTests(); |
| 129 | } |
| 130 | |
| 131 | private void leaderElectorAnointTests(int numServers) throws Throwable { |
| 132 | createCopycatServers(numServers); |
| 133 | Atomix client1 = createAtomixClient(); |
| 134 | AtomixLeaderElector elector1 = client1.get("test-elector", AtomixLeaderElector.class).join(); |
| 135 | Atomix client2 = createAtomixClient(); |
| 136 | AtomixLeaderElector elector2 = client2.get("test-elector", AtomixLeaderElector.class).join(); |
| 137 | Atomix client3 = createAtomixClient(); |
| 138 | AtomixLeaderElector elector3 = client3.get("test-elector", AtomixLeaderElector.class).join(); |
| 139 | elector1.run("foo", node1).join(); |
| 140 | elector2.run("foo", node2).join(); |
| 141 | |
| 142 | LeaderEventListener listener1 = new LeaderEventListener(); |
| 143 | elector1.addChangeListener(listener1).join(); |
| 144 | LeaderEventListener listener2 = new LeaderEventListener(); |
| 145 | elector2.addChangeListener(listener2); |
| 146 | LeaderEventListener listener3 = new LeaderEventListener(); |
| 147 | elector3.addChangeListener(listener3).join(); |
| 148 | |
| 149 | elector3.anoint("foo", node3).thenAccept(result -> { |
| 150 | assertFalse(result); |
| 151 | }).join(); |
| 152 | assertFalse(listener1.hasEvent()); |
| 153 | assertFalse(listener2.hasEvent()); |
| 154 | assertFalse(listener3.hasEvent()); |
| 155 | |
| 156 | elector3.anoint("foo", node2).thenAccept(result -> { |
| 157 | assertTrue(result); |
| 158 | }).join(); |
| 159 | assertTrue(listener1.hasEvent()); |
| 160 | assertTrue(listener2.hasEvent()); |
| 161 | assertTrue(listener3.hasEvent()); |
| 162 | |
| 163 | listener1.nextEvent().thenAccept(result -> { |
| 164 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 165 | assertEquals(2, result.newValue().candidates().size()); |
| 166 | assertEquals(node1, result.newValue().candidates().get(0)); |
| 167 | assertEquals(node2, result.newValue().candidates().get(1)); |
| 168 | }).join(); |
| 169 | listener2.nextEvent().thenAccept(result -> { |
| 170 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 171 | assertEquals(2, result.newValue().candidates().size()); |
| 172 | assertEquals(node1, result.newValue().candidates().get(0)); |
| 173 | assertEquals(node2, result.newValue().candidates().get(1)); |
| 174 | }).join(); |
| 175 | listener3.nextEvent().thenAccept(result -> { |
| 176 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 177 | assertEquals(2, result.newValue().candidates().size()); |
| 178 | assertEquals(node1, result.newValue().candidates().get(0)); |
| 179 | assertEquals(node2, result.newValue().candidates().get(1)); |
| 180 | }).join(); |
| 181 | } |
| 182 | |
| 183 | @Test |
| 184 | public void testLeaderSessionClose() throws Throwable { |
| 185 | leaderElectorLeaderSessionCloseTests(1); |
| 186 | clearTests(); |
| 187 | leaderElectorLeaderSessionCloseTests(2); |
| 188 | clearTests(); |
| 189 | leaderElectorLeaderSessionCloseTests(3); |
| 190 | clearTests(); |
| 191 | } |
| 192 | |
| 193 | private void leaderElectorLeaderSessionCloseTests(int numServers) throws Throwable { |
| 194 | createCopycatServers(numServers); |
| 195 | Atomix client1 = createAtomixClient(); |
| 196 | AtomixLeaderElector elector1 = client1.get("test-elector", AtomixLeaderElector.class).join(); |
| 197 | elector1.run("foo", node1).join(); |
| 198 | Atomix client2 = createAtomixClient(); |
| 199 | AtomixLeaderElector elector2 = client2.get("test-elector", AtomixLeaderElector.class).join(); |
| 200 | LeaderEventListener listener = new LeaderEventListener(); |
| 201 | elector2.run("foo", node2).join(); |
| 202 | elector2.addChangeListener(listener).join(); |
| 203 | client1.close(); |
| 204 | listener.nextEvent().thenAccept(result -> { |
| 205 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 206 | assertEquals(1, result.newValue().candidates().size()); |
| 207 | assertEquals(node2, result.newValue().candidates().get(0)); |
| 208 | }).join(); |
| 209 | } |
| 210 | |
| 211 | @Test |
| 212 | public void testNonLeaderSessionClose() throws Throwable { |
| 213 | leaderElectorNonLeaderSessionCloseTests(1); |
| 214 | clearTests(); |
| 215 | leaderElectorNonLeaderSessionCloseTests(2); |
| 216 | clearTests(); |
| 217 | leaderElectorNonLeaderSessionCloseTests(3); |
| 218 | clearTests(); |
| 219 | } |
| 220 | |
| 221 | private void leaderElectorNonLeaderSessionCloseTests(int numServers) throws Throwable { |
| 222 | createCopycatServers(numServers); |
| 223 | Atomix client1 = createAtomixClient(); |
| 224 | AtomixLeaderElector elector1 = client1.get("test-elector", AtomixLeaderElector.class).join(); |
| 225 | elector1.run("foo", node1).join(); |
| 226 | Atomix client2 = createAtomixClient(); |
| 227 | AtomixLeaderElector elector2 = client2.get("test-elector", AtomixLeaderElector.class).join(); |
| 228 | LeaderEventListener listener = new LeaderEventListener(); |
| 229 | elector2.run("foo", node2).join(); |
| 230 | elector1.addChangeListener(listener).join(); |
| 231 | client2.close().join(); |
| 232 | listener.nextEvent().thenAccept(result -> { |
| 233 | assertEquals(node1, result.newValue().leaderNodeId()); |
| 234 | assertEquals(1, result.newValue().candidates().size()); |
| 235 | assertEquals(node1, result.newValue().candidates().get(0)); |
| 236 | }).join(); |
| 237 | } |
| 238 | |
| 239 | @Test |
| 240 | public void testQueries() throws Throwable { |
| 241 | leaderElectorQueryTests(1); |
| 242 | clearTests(); |
| 243 | leaderElectorQueryTests(2); |
| 244 | clearTests(); |
| 245 | leaderElectorQueryTests(3); |
| 246 | clearTests(); |
| 247 | } |
| 248 | |
| 249 | private void leaderElectorQueryTests(int numServers) throws Throwable { |
| 250 | createCopycatServers(numServers); |
| 251 | Atomix client1 = createAtomixClient(); |
| 252 | Atomix client2 = createAtomixClient(); |
| 253 | AtomixLeaderElector elector1 = client1.get("test-elector", AtomixLeaderElector.class).join(); |
| 254 | AtomixLeaderElector elector2 = client2.get("test-elector", AtomixLeaderElector.class).join(); |
| 255 | elector1.run("foo", node1).join(); |
| 256 | elector2.run("foo", node2).join(); |
| 257 | elector2.run("bar", node2).join(); |
| 258 | elector1.getElectedTopics(node1).thenAccept(result -> { |
| 259 | assertEquals(1, result.size()); |
| 260 | assertTrue(result.contains("foo")); |
| 261 | }).join(); |
| 262 | elector2.getElectedTopics(node1).thenAccept(result -> { |
| 263 | assertEquals(1, result.size()); |
| 264 | assertTrue(result.contains("foo")); |
| 265 | }).join(); |
| 266 | elector1.getLeadership("foo").thenAccept(result -> { |
| 267 | assertEquals(node1, result.leaderNodeId()); |
| 268 | assertEquals(node1, result.candidates().get(0)); |
| 269 | assertEquals(node2, result.candidates().get(1)); |
| 270 | }).join(); |
| 271 | elector2.getLeadership("foo").thenAccept(result -> { |
| 272 | assertEquals(node1, result.leaderNodeId()); |
| 273 | assertEquals(node1, result.candidates().get(0)); |
| 274 | assertEquals(node2, result.candidates().get(1)); |
| 275 | }).join(); |
| 276 | elector1.getLeadership("bar").thenAccept(result -> { |
| 277 | assertEquals(node2, result.leaderNodeId()); |
| 278 | assertEquals(node2, result.candidates().get(0)); |
| 279 | }).join(); |
| 280 | elector2.getLeadership("bar").thenAccept(result -> { |
| 281 | assertEquals(node2, result.leaderNodeId()); |
| 282 | assertEquals(node2, result.candidates().get(0)); |
| 283 | }).join(); |
| 284 | elector1.getLeaderships().thenAccept(result -> { |
| 285 | assertEquals(2, result.size()); |
| 286 | Leadership fooLeadership = result.get("foo"); |
| 287 | assertEquals(node1, fooLeadership.leaderNodeId()); |
| 288 | assertEquals(node1, fooLeadership.candidates().get(0)); |
| 289 | assertEquals(node2, fooLeadership.candidates().get(1)); |
| 290 | Leadership barLeadership = result.get("bar"); |
| 291 | assertEquals(node2, barLeadership.leaderNodeId()); |
| 292 | assertEquals(node2, barLeadership.candidates().get(0)); |
| 293 | }).join(); |
| 294 | elector2.getLeaderships().thenAccept(result -> { |
| 295 | assertEquals(2, result.size()); |
| 296 | Leadership fooLeadership = result.get("foo"); |
| 297 | assertEquals(node1, fooLeadership.leaderNodeId()); |
| 298 | assertEquals(node1, fooLeadership.candidates().get(0)); |
| 299 | assertEquals(node2, fooLeadership.candidates().get(1)); |
| 300 | Leadership barLeadership = result.get("bar"); |
| 301 | assertEquals(node2, barLeadership.leaderNodeId()); |
| 302 | assertEquals(node2, barLeadership.candidates().get(0)); |
| 303 | }).join(); |
| 304 | } |
| 305 | |
| 306 | private static class LeaderEventListener implements Consumer<Change<Leadership>> { |
| 307 | Queue<Change<Leadership>> eventQueue = new LinkedList<>(); |
| 308 | CompletableFuture<Change<Leadership>> pendingFuture; |
| 309 | |
| 310 | @Override |
| 311 | public void accept(Change<Leadership> change) { |
| 312 | synchronized (this) { |
| 313 | if (pendingFuture != null) { |
| 314 | pendingFuture.complete(change); |
| 315 | pendingFuture = null; |
| 316 | } else { |
| 317 | eventQueue.add(change); |
| 318 | } |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | public boolean hasEvent() { |
| 323 | return !eventQueue.isEmpty(); |
| 324 | } |
| 325 | |
| 326 | public CompletableFuture<Change<Leadership>> nextEvent() { |
| 327 | synchronized (this) { |
| 328 | if (eventQueue.isEmpty()) { |
| 329 | if (pendingFuture == null) { |
| 330 | pendingFuture = new CompletableFuture<>(); |
| 331 | } |
| 332 | return pendingFuture; |
| 333 | } else { |
| 334 | return CompletableFuture.completedFuture(eventQueue.poll()); |
| 335 | } |
| 336 | } |
| 337 | } |
| 338 | } |
| 339 | } |