Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Laboratory |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 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 | |
Aaron Kruglikov | 6afeccd | 2016-07-05 13:17:01 -0700 | [diff] [blame] | 18 | import io.atomix.Atomix; |
| 19 | import io.atomix.AtomixClient; |
| 20 | import io.atomix.resource.ResourceType; |
| 21 | import org.junit.AfterClass; |
| 22 | import org.junit.BeforeClass; |
| 23 | import org.junit.Test; |
| 24 | import org.onosproject.cluster.Leadership; |
| 25 | import org.onosproject.cluster.NodeId; |
| 26 | import org.onosproject.event.Change; |
| 27 | |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 28 | import java.util.LinkedList; |
| 29 | import java.util.Queue; |
| 30 | import java.util.concurrent.CompletableFuture; |
| 31 | import java.util.function.Consumer; |
| 32 | |
Aaron Kruglikov | 6afeccd | 2016-07-05 13:17:01 -0700 | [diff] [blame] | 33 | import static org.junit.Assert.assertEquals; |
| 34 | import static org.junit.Assert.assertFalse; |
| 35 | import static org.junit.Assert.assertTrue; |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 36 | |
| 37 | /** |
| 38 | * Unit tests for {@link AtomixLeaderElector}. |
| 39 | */ |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 40 | public class AtomixLeaderElectorTest extends AtomixTestBase { |
| 41 | |
| 42 | NodeId node1 = new NodeId("node1"); |
| 43 | NodeId node2 = new NodeId("node2"); |
| 44 | NodeId node3 = new NodeId("node3"); |
| 45 | |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 46 | @BeforeClass |
| 47 | public static void preTestSetup() throws Throwable { |
| 48 | createCopycatServers(3); |
| 49 | } |
| 50 | |
| 51 | @AfterClass |
| 52 | public static void postTestCleanup() throws Exception { |
| 53 | clearTests(); |
| 54 | } |
| 55 | |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 56 | @Override |
| 57 | protected ResourceType resourceType() { |
| 58 | return new ResourceType(AtomixLeaderElector.class); |
| 59 | } |
| 60 | |
| 61 | @Test |
| 62 | public void testRun() throws Throwable { |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 63 | leaderElectorRunTests(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 64 | } |
| 65 | |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 66 | private void leaderElectorRunTests() throws Throwable { |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 67 | Atomix client1 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 68 | AtomixLeaderElector elector1 = client1.getResource("test-elector-run", |
| 69 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 70 | elector1.run("foo", node1).thenAccept(result -> { |
| 71 | assertEquals(node1, result.leaderNodeId()); |
| 72 | assertEquals(1, result.leader().term()); |
| 73 | assertEquals(1, result.candidates().size()); |
| 74 | assertEquals(node1, result.candidates().get(0)); |
| 75 | }).join(); |
| 76 | Atomix client2 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 77 | AtomixLeaderElector elector2 = client2.getResource("test-elector-run", |
| 78 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 79 | elector2.run("foo", node2).thenAccept(result -> { |
| 80 | assertEquals(node1, result.leaderNodeId()); |
| 81 | assertEquals(1, result.leader().term()); |
| 82 | assertEquals(2, result.candidates().size()); |
| 83 | assertEquals(node1, result.candidates().get(0)); |
| 84 | assertEquals(node2, result.candidates().get(1)); |
| 85 | }).join(); |
| 86 | } |
| 87 | |
| 88 | @Test |
| 89 | public void testWithdraw() throws Throwable { |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 90 | leaderElectorWithdrawTests(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 91 | } |
| 92 | |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 93 | private void leaderElectorWithdrawTests() throws Throwable { |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 94 | Atomix client1 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 95 | AtomixLeaderElector elector1 = client1.getResource("test-elector-withdraw", |
| 96 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 97 | elector1.run("foo", node1).join(); |
| 98 | Atomix client2 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 99 | AtomixLeaderElector elector2 = client2.getResource("test-elector-withdraw", |
| 100 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 101 | elector2.run("foo", node2).join(); |
| 102 | |
| 103 | LeaderEventListener listener1 = new LeaderEventListener(); |
| 104 | elector1.addChangeListener(listener1).join(); |
| 105 | |
| 106 | LeaderEventListener listener2 = new LeaderEventListener(); |
| 107 | elector2.addChangeListener(listener2).join(); |
| 108 | |
| 109 | elector1.withdraw("foo").join(); |
| 110 | |
| 111 | listener1.nextEvent().thenAccept(result -> { |
| 112 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 113 | assertEquals(2, result.newValue().leader().term()); |
| 114 | assertEquals(1, result.newValue().candidates().size()); |
| 115 | assertEquals(node2, result.newValue().candidates().get(0)); |
| 116 | }).join(); |
| 117 | |
| 118 | listener2.nextEvent().thenAccept(result -> { |
| 119 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 120 | assertEquals(2, result.newValue().leader().term()); |
| 121 | assertEquals(1, result.newValue().candidates().size()); |
| 122 | assertEquals(node2, result.newValue().candidates().get(0)); |
| 123 | }).join(); |
| 124 | } |
| 125 | |
| 126 | @Test |
| 127 | public void testAnoint() throws Throwable { |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 128 | leaderElectorAnointTests(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 129 | } |
| 130 | |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 131 | private void leaderElectorAnointTests() throws Throwable { |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 132 | Atomix client1 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 133 | AtomixLeaderElector elector1 = client1.getResource("test-elector-anoint", |
| 134 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 135 | Atomix client2 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 136 | AtomixLeaderElector elector2 = client2.getResource("test-elector-anoint", |
| 137 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 138 | Atomix client3 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 139 | AtomixLeaderElector elector3 = client3.getResource("test-elector-anoint", |
| 140 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 141 | elector1.run("foo", node1).join(); |
| 142 | elector2.run("foo", node2).join(); |
| 143 | |
| 144 | LeaderEventListener listener1 = new LeaderEventListener(); |
| 145 | elector1.addChangeListener(listener1).join(); |
| 146 | LeaderEventListener listener2 = new LeaderEventListener(); |
| 147 | elector2.addChangeListener(listener2); |
| 148 | LeaderEventListener listener3 = new LeaderEventListener(); |
| 149 | elector3.addChangeListener(listener3).join(); |
| 150 | |
| 151 | elector3.anoint("foo", node3).thenAccept(result -> { |
| 152 | assertFalse(result); |
| 153 | }).join(); |
| 154 | assertFalse(listener1.hasEvent()); |
| 155 | assertFalse(listener2.hasEvent()); |
| 156 | assertFalse(listener3.hasEvent()); |
| 157 | |
| 158 | elector3.anoint("foo", node2).thenAccept(result -> { |
| 159 | assertTrue(result); |
| 160 | }).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 161 | |
| 162 | listener1.nextEvent().thenAccept(result -> { |
| 163 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 164 | assertEquals(2, result.newValue().candidates().size()); |
| 165 | assertEquals(node1, result.newValue().candidates().get(0)); |
| 166 | assertEquals(node2, result.newValue().candidates().get(1)); |
| 167 | }).join(); |
| 168 | listener2.nextEvent().thenAccept(result -> { |
| 169 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 170 | assertEquals(2, result.newValue().candidates().size()); |
| 171 | assertEquals(node1, result.newValue().candidates().get(0)); |
| 172 | assertEquals(node2, result.newValue().candidates().get(1)); |
| 173 | }).join(); |
| 174 | listener3.nextEvent().thenAccept(result -> { |
| 175 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 176 | assertEquals(2, result.newValue().candidates().size()); |
| 177 | assertEquals(node1, result.newValue().candidates().get(0)); |
| 178 | assertEquals(node2, result.newValue().candidates().get(1)); |
| 179 | }).join(); |
| 180 | } |
| 181 | |
| 182 | @Test |
Madan Jampani | 0c0cdc6 | 2016-02-22 16:54:06 -0800 | [diff] [blame] | 183 | public void testPromote() throws Throwable { |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 184 | leaderElectorPromoteTests(); |
Madan Jampani | 0c0cdc6 | 2016-02-22 16:54:06 -0800 | [diff] [blame] | 185 | } |
| 186 | |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 187 | private void leaderElectorPromoteTests() throws Throwable { |
Madan Jampani | 630e7ac | 2016-05-31 11:34:05 -0700 | [diff] [blame] | 188 | AtomixClient client1 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 189 | AtomixLeaderElector elector1 = client1.getResource("test-elector-promote", |
| 190 | AtomixLeaderElector.class).join(); |
Madan Jampani | 630e7ac | 2016-05-31 11:34:05 -0700 | [diff] [blame] | 191 | AtomixClient client2 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 192 | AtomixLeaderElector elector2 = client2.getResource("test-elector-promote", |
| 193 | AtomixLeaderElector.class).join(); |
Madan Jampani | 630e7ac | 2016-05-31 11:34:05 -0700 | [diff] [blame] | 194 | AtomixClient client3 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 195 | AtomixLeaderElector elector3 = client3.getResource("test-elector-promote", |
| 196 | AtomixLeaderElector.class).join(); |
Madan Jampani | 0c0cdc6 | 2016-02-22 16:54:06 -0800 | [diff] [blame] | 197 | elector1.run("foo", node1).join(); |
| 198 | elector2.run("foo", node2).join(); |
| 199 | |
| 200 | LeaderEventListener listener1 = new LeaderEventListener(); |
| 201 | elector1.addChangeListener(listener1).join(); |
| 202 | LeaderEventListener listener2 = new LeaderEventListener(); |
| 203 | elector2.addChangeListener(listener2).join(); |
| 204 | LeaderEventListener listener3 = new LeaderEventListener(); |
| 205 | elector3.addChangeListener(listener3).join(); |
| 206 | |
| 207 | elector3.promote("foo", node3).thenAccept(result -> { |
| 208 | assertFalse(result); |
| 209 | }).join(); |
| 210 | |
| 211 | assertFalse(listener1.hasEvent()); |
| 212 | assertFalse(listener2.hasEvent()); |
| 213 | assertFalse(listener3.hasEvent()); |
| 214 | |
| 215 | elector3.run("foo", node3).join(); |
| 216 | |
Madan Jampani | 630e7ac | 2016-05-31 11:34:05 -0700 | [diff] [blame] | 217 | listener1.nextEvent().thenAccept(result -> { |
| 218 | assertEquals(node3, result.newValue().candidates().get(2)); |
| 219 | }).join(); |
| 220 | listener2.nextEvent().thenAccept(result -> { |
| 221 | assertEquals(node3, result.newValue().candidates().get(2)); |
| 222 | }).join(); |
| 223 | listener3.nextEvent().thenAccept(result -> { |
| 224 | assertEquals(node3, result.newValue().candidates().get(2)); |
| 225 | }).join(); |
Madan Jampani | 0c0cdc6 | 2016-02-22 16:54:06 -0800 | [diff] [blame] | 226 | |
| 227 | elector3.promote("foo", node3).thenAccept(result -> { |
| 228 | assertTrue(result); |
| 229 | }).join(); |
| 230 | |
| 231 | listener1.nextEvent().thenAccept(result -> { |
| 232 | assertEquals(node3, result.newValue().candidates().get(0)); |
| 233 | }).join(); |
| 234 | listener2.nextEvent().thenAccept(result -> { |
| 235 | assertEquals(node3, result.newValue().candidates().get(0)); |
| 236 | }).join(); |
| 237 | listener3.nextEvent().thenAccept(result -> { |
| 238 | assertEquals(node3, result.newValue().candidates().get(0)); |
| 239 | }).join(); |
| 240 | } |
| 241 | |
| 242 | @Test |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 243 | public void testLeaderSessionClose() throws Throwable { |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 244 | leaderElectorLeaderSessionCloseTests(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 245 | } |
| 246 | |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 247 | private void leaderElectorLeaderSessionCloseTests() throws Throwable { |
Madan Jampani | 630e7ac | 2016-05-31 11:34:05 -0700 | [diff] [blame] | 248 | AtomixClient client1 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 249 | AtomixLeaderElector elector1 = client1.getResource("test-elector-leader-session-close", |
| 250 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 251 | elector1.run("foo", node1).join(); |
| 252 | Atomix client2 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 253 | AtomixLeaderElector elector2 = client2.getResource("test-elector-leader-session-close", |
| 254 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 255 | LeaderEventListener listener = new LeaderEventListener(); |
| 256 | elector2.run("foo", node2).join(); |
| 257 | elector2.addChangeListener(listener).join(); |
| 258 | client1.close(); |
| 259 | listener.nextEvent().thenAccept(result -> { |
| 260 | assertEquals(node2, result.newValue().leaderNodeId()); |
| 261 | assertEquals(1, result.newValue().candidates().size()); |
| 262 | assertEquals(node2, result.newValue().candidates().get(0)); |
| 263 | }).join(); |
| 264 | } |
| 265 | |
| 266 | @Test |
| 267 | public void testNonLeaderSessionClose() throws Throwable { |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 268 | leaderElectorNonLeaderSessionCloseTests(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 269 | } |
| 270 | |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 271 | private void leaderElectorNonLeaderSessionCloseTests() throws Throwable { |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 272 | Atomix client1 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 273 | AtomixLeaderElector elector1 = client1.getResource("test-elector-non-leader-session-close", |
| 274 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 275 | elector1.run("foo", node1).join(); |
Madan Jampani | 630e7ac | 2016-05-31 11:34:05 -0700 | [diff] [blame] | 276 | AtomixClient client2 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 277 | AtomixLeaderElector elector2 = client2.getResource("test-elector-non-leader-session-close", |
| 278 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 279 | LeaderEventListener listener = new LeaderEventListener(); |
| 280 | elector2.run("foo", node2).join(); |
| 281 | elector1.addChangeListener(listener).join(); |
| 282 | client2.close().join(); |
| 283 | listener.nextEvent().thenAccept(result -> { |
| 284 | assertEquals(node1, result.newValue().leaderNodeId()); |
| 285 | assertEquals(1, result.newValue().candidates().size()); |
| 286 | assertEquals(node1, result.newValue().candidates().get(0)); |
| 287 | }).join(); |
| 288 | } |
| 289 | |
| 290 | @Test |
| 291 | public void testQueries() throws Throwable { |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 292 | leaderElectorQueryTests(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 293 | } |
| 294 | |
Aaron Kruglikov | c38dc7f | 2016-07-19 10:00:11 -0700 | [diff] [blame^] | 295 | private void leaderElectorQueryTests() throws Throwable { |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 296 | Atomix client1 = createAtomixClient(); |
| 297 | Atomix client2 = createAtomixClient(); |
Aaron Kruglikov | b5a41e5 | 2016-06-23 15:37:41 -0700 | [diff] [blame] | 298 | AtomixLeaderElector elector1 = client1.getResource("test-elector-query", |
| 299 | AtomixLeaderElector.class).join(); |
| 300 | AtomixLeaderElector elector2 = client2.getResource("test-elector-query", |
| 301 | AtomixLeaderElector.class).join(); |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 302 | elector1.run("foo", node1).join(); |
| 303 | elector2.run("foo", node2).join(); |
| 304 | elector2.run("bar", node2).join(); |
| 305 | elector1.getElectedTopics(node1).thenAccept(result -> { |
| 306 | assertEquals(1, result.size()); |
| 307 | assertTrue(result.contains("foo")); |
| 308 | }).join(); |
| 309 | elector2.getElectedTopics(node1).thenAccept(result -> { |
| 310 | assertEquals(1, result.size()); |
| 311 | assertTrue(result.contains("foo")); |
| 312 | }).join(); |
| 313 | elector1.getLeadership("foo").thenAccept(result -> { |
| 314 | assertEquals(node1, result.leaderNodeId()); |
| 315 | assertEquals(node1, result.candidates().get(0)); |
| 316 | assertEquals(node2, result.candidates().get(1)); |
| 317 | }).join(); |
| 318 | elector2.getLeadership("foo").thenAccept(result -> { |
| 319 | assertEquals(node1, result.leaderNodeId()); |
| 320 | assertEquals(node1, result.candidates().get(0)); |
| 321 | assertEquals(node2, result.candidates().get(1)); |
| 322 | }).join(); |
| 323 | elector1.getLeadership("bar").thenAccept(result -> { |
| 324 | assertEquals(node2, result.leaderNodeId()); |
| 325 | assertEquals(node2, result.candidates().get(0)); |
| 326 | }).join(); |
| 327 | elector2.getLeadership("bar").thenAccept(result -> { |
| 328 | assertEquals(node2, result.leaderNodeId()); |
| 329 | assertEquals(node2, result.candidates().get(0)); |
| 330 | }).join(); |
| 331 | elector1.getLeaderships().thenAccept(result -> { |
| 332 | assertEquals(2, result.size()); |
| 333 | Leadership fooLeadership = result.get("foo"); |
| 334 | assertEquals(node1, fooLeadership.leaderNodeId()); |
| 335 | assertEquals(node1, fooLeadership.candidates().get(0)); |
| 336 | assertEquals(node2, fooLeadership.candidates().get(1)); |
| 337 | Leadership barLeadership = result.get("bar"); |
| 338 | assertEquals(node2, barLeadership.leaderNodeId()); |
| 339 | assertEquals(node2, barLeadership.candidates().get(0)); |
| 340 | }).join(); |
| 341 | elector2.getLeaderships().thenAccept(result -> { |
| 342 | assertEquals(2, result.size()); |
| 343 | Leadership fooLeadership = result.get("foo"); |
| 344 | assertEquals(node1, fooLeadership.leaderNodeId()); |
| 345 | assertEquals(node1, fooLeadership.candidates().get(0)); |
| 346 | assertEquals(node2, fooLeadership.candidates().get(1)); |
| 347 | Leadership barLeadership = result.get("bar"); |
| 348 | assertEquals(node2, barLeadership.leaderNodeId()); |
| 349 | assertEquals(node2, barLeadership.candidates().get(0)); |
| 350 | }).join(); |
| 351 | } |
| 352 | |
| 353 | private static class LeaderEventListener implements Consumer<Change<Leadership>> { |
| 354 | Queue<Change<Leadership>> eventQueue = new LinkedList<>(); |
| 355 | CompletableFuture<Change<Leadership>> pendingFuture; |
| 356 | |
| 357 | @Override |
| 358 | public void accept(Change<Leadership> change) { |
| 359 | synchronized (this) { |
| 360 | if (pendingFuture != null) { |
| 361 | pendingFuture.complete(change); |
| 362 | pendingFuture = null; |
| 363 | } else { |
| 364 | eventQueue.add(change); |
| 365 | } |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | public boolean hasEvent() { |
| 370 | return !eventQueue.isEmpty(); |
| 371 | } |
| 372 | |
Madan Jampani | 0c0cdc6 | 2016-02-22 16:54:06 -0800 | [diff] [blame] | 373 | public void clearEvents() { |
| 374 | eventQueue.clear(); |
| 375 | } |
| 376 | |
Madan Jampani | 5e5b3d6 | 2016-02-01 16:03:33 -0800 | [diff] [blame] | 377 | public CompletableFuture<Change<Leadership>> nextEvent() { |
| 378 | synchronized (this) { |
| 379 | if (eventQueue.isEmpty()) { |
| 380 | if (pendingFuture == null) { |
| 381 | pendingFuture = new CompletableFuture<>(); |
| 382 | } |
| 383 | return pendingFuture; |
| 384 | } else { |
| 385 | return CompletableFuture.completedFuture(eventQueue.poll()); |
| 386 | } |
| 387 | } |
| 388 | } |
| 389 | } |
| 390 | } |