opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/DistributedDataStoreRemotingIntegrationTest.java

   1 /*
   2  * Copyright (c) 2015 Brocade Communications Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.datastore;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.assertNotNull;
  12 import static org.junit.Assert.assertTrue;
  13 import static org.junit.Assert.fail;
  14 import static org.mockito.Matchers.any;
  15 import static org.mockito.Matchers.eq;
  16 import static org.mockito.Mockito.timeout;
  17 import static org.mockito.Mockito.verify;
  18 import akka.actor.ActorRef;
  19 import akka.actor.ActorSelection;
  20 import akka.actor.ActorSystem;
  21 import akka.actor.Address;
  22 import akka.actor.AddressFromURIString;
  23 import akka.cluster.Cluster;
  24 import akka.dispatch.Futures;
  25 import akka.pattern.AskTimeoutException;
  26 import akka.pattern.Patterns;
  27 import akka.testkit.JavaTestKit;
  28 import com.google.common.base.Optional;
  29 import com.google.common.base.Supplier;
  30 import com.google.common.collect.ImmutableMap;
  31 import com.google.common.util.concurrent.ListenableFuture;
  32 import com.google.common.util.concurrent.MoreExecutors;
  33 import com.google.common.util.concurrent.Uninterruptibles;
  34 import com.typesafe.config.ConfigFactory;
  35 import java.math.BigInteger;
  36 import java.util.Arrays;
  37 import java.util.LinkedList;
  38 import java.util.concurrent.ExecutionException;
  39 import java.util.concurrent.TimeUnit;
  40 import org.junit.After;
  41 import org.junit.Before;
  42 import org.junit.Test;
  43 import org.mockito.Mockito;
  44 import org.mockito.invocation.InvocationOnMock;
  45 import org.mockito.stubbing.Answer;
  46 import org.opendaylight.controller.cluster.databroker.ConcurrentDOMDataBroker;
  47 import org.opendaylight.controller.cluster.datastore.DatastoreContext.Builder;
  48 import org.opendaylight.controller.cluster.datastore.IntegrationTestKit.ShardStatsVerifier;
  49 import org.opendaylight.controller.cluster.datastore.MemberNode.RaftStateVerifier;
  50 import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException;
  51 import org.opendaylight.controller.cluster.datastore.exceptions.ShardLeaderNotRespondingException;
  52 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
  53 import org.opendaylight.controller.cluster.datastore.messages.CommitTransactionReply;
  54 import org.opendaylight.controller.cluster.datastore.messages.ForwardedReadyTransaction;
  55 import org.opendaylight.controller.cluster.datastore.messages.GetShardDataTree;
  56 import org.opendaylight.controller.cluster.datastore.messages.ReadyLocalTransaction;
  57 import org.opendaylight.controller.cluster.datastore.messages.ReadyTransactionReply;
  58 import org.opendaylight.controller.cluster.datastore.modification.MergeModification;
  59 import org.opendaylight.controller.cluster.datastore.modification.WriteModification;
  60 import org.opendaylight.controller.cluster.raft.base.messages.ApplyJournalEntries;
  61 import org.opendaylight.controller.cluster.raft.client.messages.OnDemandRaftState;
  62 import org.opendaylight.controller.cluster.raft.client.messages.Shutdown;
  63 import org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy;
  64 import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal;
  65 import org.opendaylight.controller.md.cluster.datastore.model.CarsModel;
  66 import org.opendaylight.controller.md.cluster.datastore.model.PeopleModel;
  67 import org.opendaylight.controller.md.cluster.datastore.model.SchemaContextHelper;
  68 import org.opendaylight.controller.md.cluster.datastore.model.TestModel;
  69 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  70 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  71 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  72 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  73 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  74 import org.opendaylight.controller.sal.core.spi.data.DOMStore;
  75 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
  76 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
  77 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
  78 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  79 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
  80 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  81 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  82 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  83 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  84 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  85 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
  86 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
  87 import org.opendaylight.yangtools.yang.data.api.schema.tree.TipProducingDataTree;
  88 import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType;
  89 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  90 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
  91 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableContainerNodeBuilder;
  92 import org.opendaylight.yangtools.yang.data.impl.schema.tree.InMemoryDataTreeFactory;
  93 import scala.concurrent.Await;
  94 import scala.concurrent.Future;
  95 import scala.concurrent.duration.FiniteDuration;
  96
  97 /**
  98  * End-to-end distributed data store tests that exercise remote shards and transactions.
  99  *
 100  * @author Thomas Pantelis
 101  */
 102 public class DistributedDataStoreRemotingIntegrationTest {
 103
 104     private static final String[] CARS_AND_PEOPLE = {"cars", "people"};
 105     private static final String[] CARS = {"cars"};
 106
 107     private static final Address MEMBER_1_ADDRESS = AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558");
 108     private static final Address MEMBER_2_ADDRESS = AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2559");
 109
 110     private static final String MODULE_SHARDS_CARS_ONLY_1_2 = "module-shards-cars-member-1-and-2.conf";
 111     private static final String MODULE_SHARDS_CARS_PEOPLE_1_2 = "module-shards-member1-and-2.conf";
 112     private static final String MODULE_SHARDS_CARS_PEOPLE_1_2_3 = "module-shards-member1-and-2-and-3.conf";
 113
 114     private ActorSystem leaderSystem;
 115     private ActorSystem followerSystem;
 116     private ActorSystem follower2System;
 117
 118     private final DatastoreContext.Builder leaderDatastoreContextBuilder =
 119             DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(2);
 120
 121     private final DatastoreContext.Builder followerDatastoreContextBuilder =
 122             DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5).
 123                 customRaftPolicyImplementation(DisableElectionsRaftPolicy.class.getName());
 124
 125     private DistributedDataStore followerDistributedDataStore;
 126     private DistributedDataStore leaderDistributedDataStore;
 127     private IntegrationTestKit followerTestKit;
 128     private IntegrationTestKit leaderTestKit;
 129
 130     @Before
 131     public void setUp() {
 132         leaderSystem = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 133         Cluster.get(leaderSystem).join(MEMBER_1_ADDRESS);
 134
 135         followerSystem = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member2"));
 136         Cluster.get(followerSystem).join(MEMBER_1_ADDRESS);
 137
 138         follower2System = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member3"));
 139         Cluster.get(follower2System).join(MEMBER_1_ADDRESS);
 140     }
 141
 142     @After
 143     public void tearDown() {
 144         JavaTestKit.shutdownActorSystem(leaderSystem);
 145         JavaTestKit.shutdownActorSystem(followerSystem);
 146         JavaTestKit.shutdownActorSystem(follower2System);
 147     }
 148
 149     private void initDatastoresWithCars(String type) {
 150         initDatastores(type, MODULE_SHARDS_CARS_ONLY_1_2, CARS);
 151     }
 152
 153     private void initDatastoresWithCarsAndPeople(String type) {
 154         initDatastores(type, MODULE_SHARDS_CARS_PEOPLE_1_2, CARS_AND_PEOPLE);
 155     }
 156
 157     private void initDatastores(String type, String moduleShardsConfig, String[] shards) {
 158         leaderTestKit = new IntegrationTestKit(leaderSystem, leaderDatastoreContextBuilder);
 159
 160         leaderDistributedDataStore = leaderTestKit.setupDistributedDataStore(type, moduleShardsConfig, false, shards);
 161
 162         followerTestKit = new IntegrationTestKit(followerSystem, followerDatastoreContextBuilder);
 163         followerDistributedDataStore = followerTestKit.setupDistributedDataStore(type, moduleShardsConfig, false, shards);
 164
 165         leaderTestKit.waitUntilLeader(leaderDistributedDataStore.getActorContext(), shards);
 166     }
 167
 168     private static void verifyCars(DOMStoreReadTransaction readTx, MapEntryNode... entries) throws Exception {
 169         Optional<NormalizedNode<?, ?>> optional = readTx.read(CarsModel.CAR_LIST_PATH).get(5, TimeUnit.SECONDS);
 170         assertEquals("isPresent", true, optional.isPresent());
 171
 172         CollectionNodeBuilder<MapEntryNode, MapNode> listBuilder = ImmutableNodes.mapNodeBuilder(CarsModel.CAR_QNAME);
 173         for(NormalizedNode<?, ?> entry: entries) {
 174             listBuilder.withChild((MapEntryNode) entry);
 175         }
 176
 177         assertEquals("Car list node", listBuilder.build(), optional.get());
 178     }
 179
 180     private static void verifyNode(DOMStoreReadTransaction readTx, YangInstanceIdentifier path, NormalizedNode<?, ?> expNode)
 181             throws Exception {
 182         Optional<NormalizedNode<?, ?>> optional = readTx.read(path).get(5, TimeUnit.SECONDS);
 183         assertEquals("isPresent", true, optional.isPresent());
 184         assertEquals("Data node", expNode, optional.get());
 185     }
 186
 187     private static void verifyExists(DOMStoreReadTransaction readTx, YangInstanceIdentifier path) throws Exception {
 188         Boolean exists = readTx.exists(path).get(5, TimeUnit.SECONDS);
 189         assertEquals("exists", true, exists);
 190     }
 191
 192     @Test
 193     public void testWriteTransactionWithSingleShard() throws Exception {
 194         String testName = "testWriteTransactionWithSingleShard";
 195         initDatastoresWithCars(testName);
 196
 197         String followerCarShardName = "member-2-shard-cars-" + testName;
 198         InMemoryJournal.addWriteMessagesCompleteLatch(followerCarShardName, 2, ApplyJournalEntries.class );
 199
 200         DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 201         assertNotNull("newWriteOnlyTransaction returned null", writeTx);
 202
 203         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 204         writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 205
 206         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 207         YangInstanceIdentifier car1Path = CarsModel.newCarPath("optima");
 208         writeTx.merge(car1Path, car1);
 209
 210         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(25000));
 211         YangInstanceIdentifier car2Path = CarsModel.newCarPath("sportage");
 212         writeTx.merge(car2Path, car2);
 213
 214         followerTestKit.doCommit(writeTx.ready());
 215
 216         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 217
 218         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 219
 220         // Test delete
 221
 222         writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 223
 224         writeTx.delete(car1Path);
 225
 226         followerTestKit.doCommit(writeTx.ready());
 227
 228         verifyExists(followerDistributedDataStore.newReadOnlyTransaction(), car2Path);
 229
 230         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car2);
 231
 232         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car2);
 233
 234         // Re-instate the follower member 2 as a single-node to verify replication and recovery.
 235
 236         InMemoryJournal.waitForWriteMessagesComplete(followerCarShardName);
 237
 238         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 239         JavaTestKit.shutdownActorSystem(followerSystem, null, true);
 240
 241         ActorSystem newSystem = ActorSystem.create("reinstated-member2", ConfigFactory.load().getConfig("Member2"));
 242
 243         DistributedDataStore member2Datastore = new IntegrationTestKit(newSystem, leaderDatastoreContextBuilder).
 244                 setupDistributedDataStore(testName, "module-shards-member2", true, CARS_AND_PEOPLE);
 245
 246         verifyCars(member2Datastore.newReadOnlyTransaction(), car2);
 247
 248         JavaTestKit.shutdownActorSystem(newSystem);
 249     }
 250
 251     @Test
 252     public void testReadWriteTransactionWithSingleShard() throws Exception {
 253         initDatastoresWithCars("testReadWriteTransactionWithSingleShard");
 254
 255         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 256         assertNotNull("newReadWriteTransaction returned null", rwTx);
 257
 258         rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 259         rwTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 260
 261         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 262         rwTx.merge(CarsModel.newCarPath("optima"), car1);
 263
 264         verifyCars(rwTx, car1);
 265
 266         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(25000));
 267         YangInstanceIdentifier car2Path = CarsModel.newCarPath("sportage");
 268         rwTx.merge(car2Path, car2);
 269
 270         verifyExists(rwTx, car2Path);
 271
 272         followerTestKit.doCommit(rwTx.ready());
 273
 274         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 275     }
 276
 277     @Test
 278     public void testWriteTransactionWithMultipleShards() throws Exception {
 279         initDatastoresWithCarsAndPeople("testWriteTransactionWithMultipleShards");
 280
 281         DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 282         assertNotNull("newWriteOnlyTransaction returned null", writeTx);
 283
 284         YangInstanceIdentifier carsPath = CarsModel.BASE_PATH;
 285         NormalizedNode<?, ?> carsNode = CarsModel.emptyContainer();
 286         writeTx.write(carsPath, carsNode);
 287
 288         YangInstanceIdentifier peoplePath = PeopleModel.BASE_PATH;
 289         NormalizedNode<?, ?> peopleNode = PeopleModel.emptyContainer();
 290         writeTx.write(peoplePath, peopleNode);
 291
 292         followerTestKit.doCommit(writeTx.ready());
 293
 294         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 295
 296         verifyNode(readTx, carsPath, carsNode);
 297         verifyNode(readTx, peoplePath, peopleNode);
 298     }
 299
 300     @Test
 301     public void testReadWriteTransactionWithMultipleShards() throws Exception {
 302         initDatastoresWithCarsAndPeople("testReadWriteTransactionWithMultipleShards");
 303
 304         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 305         assertNotNull("newReadWriteTransaction returned null", rwTx);
 306
 307         YangInstanceIdentifier carsPath = CarsModel.BASE_PATH;
 308         NormalizedNode<?, ?> carsNode = CarsModel.emptyContainer();
 309         rwTx.write(carsPath, carsNode);
 310
 311         YangInstanceIdentifier peoplePath = PeopleModel.BASE_PATH;
 312         NormalizedNode<?, ?> peopleNode = PeopleModel.emptyContainer();
 313         rwTx.write(peoplePath, peopleNode);
 314
 315         followerTestKit.doCommit(rwTx.ready());
 316
 317         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 318
 319         verifyNode(readTx, carsPath, carsNode);
 320         verifyNode(readTx, peoplePath, peopleNode);
 321     }
 322
 323     @Test
 324     public void testTransactionChainWithSingleShard() throws Exception {
 325         initDatastoresWithCars("testTransactionChainWithSingleShard");
 326
 327         DOMStoreTransactionChain txChain = followerDistributedDataStore.createTransactionChain();
 328
 329         // Add the top-level cars container with write-only.
 330
 331         DOMStoreWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
 332         assertNotNull("newWriteOnlyTransaction returned null", writeTx);
 333
 334         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 335
 336         writeTx.ready();
 337
 338         // Verify the top-level cars container with read-only.
 339
 340         verifyNode(txChain.newReadOnlyTransaction(), CarsModel.BASE_PATH, CarsModel.emptyContainer());
 341
 342         // Perform car operations with read-write.
 343
 344         DOMStoreReadWriteTransaction rwTx = txChain.newReadWriteTransaction();
 345
 346         verifyNode(rwTx, CarsModel.BASE_PATH, CarsModel.emptyContainer());
 347
 348         rwTx.merge(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 349
 350         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 351         YangInstanceIdentifier car1Path = CarsModel.newCarPath("optima");
 352         rwTx.write(car1Path, car1);
 353
 354         verifyExists(rwTx, car1Path);
 355
 356         verifyCars(rwTx, car1);
 357
 358         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(25000));
 359         rwTx.merge(CarsModel.newCarPath("sportage"), car2);
 360
 361         rwTx.delete(car1Path);
 362
 363         followerTestKit.doCommit(rwTx.ready());
 364
 365         txChain.close();
 366
 367         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car2);
 368     }
 369
 370     @Test
 371     public void testTransactionChainWithMultipleShards() throws Exception{
 372         initDatastoresWithCarsAndPeople("testTransactionChainWithMultipleShards");
 373
 374         DOMStoreTransactionChain txChain = followerDistributedDataStore.createTransactionChain();
 375
 376         DOMStoreWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
 377         assertNotNull("newWriteOnlyTransaction returned null", writeTx);
 378
 379         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 380         writeTx.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 381
 382         writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 383         writeTx.write(PeopleModel.PERSON_LIST_PATH, PeopleModel.newPersonMapNode());
 384
 385         followerTestKit.doCommit(writeTx.ready());
 386
 387         DOMStoreReadWriteTransaction readWriteTx = txChain.newReadWriteTransaction();
 388
 389         MapEntryNode car = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 390         YangInstanceIdentifier carPath = CarsModel.newCarPath("optima");
 391         readWriteTx.write(carPath, car);
 392
 393         MapEntryNode person = PeopleModel.newPersonEntry("jack");
 394         YangInstanceIdentifier personPath = PeopleModel.newPersonPath("jack");
 395         readWriteTx.merge(personPath, person);
 396
 397         Optional<NormalizedNode<?, ?>> optional = readWriteTx.read(carPath).get(5, TimeUnit.SECONDS);
 398         assertEquals("isPresent", true, optional.isPresent());
 399         assertEquals("Data node", car, optional.get());
 400
 401         optional = readWriteTx.read(personPath).get(5, TimeUnit.SECONDS);
 402         assertEquals("isPresent", true, optional.isPresent());
 403         assertEquals("Data node", person, optional.get());
 404
 405         DOMStoreThreePhaseCommitCohort cohort2 = readWriteTx.ready();
 406
 407         writeTx = txChain.newWriteOnlyTransaction();
 408
 409         writeTx.delete(personPath);
 410
 411         DOMStoreThreePhaseCommitCohort cohort3 = writeTx.ready();
 412
 413         followerTestKit.doCommit(cohort2);
 414         followerTestKit.doCommit(cohort3);
 415
 416         txChain.close();
 417
 418         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 419         verifyCars(readTx, car);
 420
 421         optional = readTx.read(personPath).get(5, TimeUnit.SECONDS);
 422         assertEquals("isPresent", false, optional.isPresent());
 423     }
 424
 425     @Test
 426     public void testChainedTransactionFailureWithSingleShard() throws Exception {
 427         initDatastoresWithCars("testChainedTransactionFailureWithSingleShard");
 428
 429         ConcurrentDOMDataBroker broker = new ConcurrentDOMDataBroker(
 430                 ImmutableMap.<LogicalDatastoreType, DOMStore>builder().put(
 431                         LogicalDatastoreType.CONFIGURATION, followerDistributedDataStore).build(),
 432                         MoreExecutors.directExecutor());
 433
 434         TransactionChainListener listener = Mockito.mock(TransactionChainListener.class);
 435         DOMTransactionChain txChain = broker.createTransactionChain(listener);
 436
 437         DOMDataWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
 438
 439         ContainerNode invalidData = ImmutableContainerNodeBuilder.create().withNodeIdentifier(
 440                 new YangInstanceIdentifier.NodeIdentifier(CarsModel.BASE_QNAME)).
 441                     withChild(ImmutableNodes.leafNode(TestModel.JUNK_QNAME, "junk")).build();
 442
 443         writeTx.merge(LogicalDatastoreType.CONFIGURATION, CarsModel.BASE_PATH, invalidData);
 444
 445         try {
 446             writeTx.submit().checkedGet(5, TimeUnit.SECONDS);
 447             fail("Expected TransactionCommitFailedException");
 448         } catch (TransactionCommitFailedException e) {
 449             // Expected
 450         }
 451
 452         verify(listener, timeout(5000)).onTransactionChainFailed(eq(txChain), eq(writeTx), any(Throwable.class));
 453
 454         txChain.close();
 455         broker.close();
 456     }
 457
 458     @Test
 459     public void testChainedTransactionFailureWithMultipleShards() throws Exception {
 460         initDatastoresWithCarsAndPeople("testChainedTransactionFailureWithMultipleShards");
 461
 462         ConcurrentDOMDataBroker broker = new ConcurrentDOMDataBroker(
 463                 ImmutableMap.<LogicalDatastoreType, DOMStore>builder().put(
 464                         LogicalDatastoreType.CONFIGURATION, followerDistributedDataStore).build(),
 465                         MoreExecutors.directExecutor());
 466
 467         TransactionChainListener listener = Mockito.mock(TransactionChainListener.class);
 468         DOMTransactionChain txChain = broker.createTransactionChain(listener);
 469
 470         DOMDataWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
 471
 472         writeTx.put(LogicalDatastoreType.CONFIGURATION, PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 473
 474         ContainerNode invalidData = ImmutableContainerNodeBuilder.create().withNodeIdentifier(
 475                 new YangInstanceIdentifier.NodeIdentifier(CarsModel.BASE_QNAME)).
 476                     withChild(ImmutableNodes.leafNode(TestModel.JUNK_QNAME, "junk")).build();
 477
 478         // Note that merge will validate the data and fail but put succeeds b/c deep validation is not
 479         // done for put for performance reasons.
 480         writeTx.merge(LogicalDatastoreType.CONFIGURATION, CarsModel.BASE_PATH, invalidData);
 481
 482         try {
 483             writeTx.submit().checkedGet(5, TimeUnit.SECONDS);
 484             fail("Expected TransactionCommitFailedException");
 485         } catch (TransactionCommitFailedException e) {
 486             // Expected
 487         }
 488
 489         verify(listener, timeout(5000)).onTransactionChainFailed(eq(txChain), eq(writeTx), any(Throwable.class));
 490
 491         txChain.close();
 492         broker.close();
 493     }
 494
 495     @Test
 496     public void testSingleShardTransactionsWithLeaderChanges() throws Exception {
 497         String testName = "testSingleShardTransactionsWithLeaderChanges";
 498         initDatastoresWithCars(testName);
 499
 500         String followerCarShardName = "member-2-shard-cars-" + testName;
 501         InMemoryJournal.addWriteMessagesCompleteLatch(followerCarShardName, 1, ApplyJournalEntries.class );
 502
 503         // Write top-level car container from the follower so it uses a remote Tx.
 504
 505         DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 506
 507         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 508         writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 509
 510         followerTestKit.doCommit(writeTx.ready());
 511
 512         InMemoryJournal.waitForWriteMessagesComplete(followerCarShardName);
 513
 514         // Switch the leader to the follower
 515
 516         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder.
 517                 shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null));
 518
 519         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 520
 521         followerTestKit.waitUntilNoLeader(followerDistributedDataStore.getActorContext(), CARS);
 522
 523         leaderSystem = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 524         Cluster.get(leaderSystem).join(MEMBER_2_ADDRESS);
 525
 526         DatastoreContext.Builder newMember1Builder = DatastoreContext.newBuilder().
 527                 shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5);
 528         IntegrationTestKit newMember1TestKit = new IntegrationTestKit(leaderSystem, newMember1Builder);
 529         newMember1TestKit.setupDistributedDataStore(testName, MODULE_SHARDS_CARS_ONLY_1_2, false, CARS);
 530
 531         followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), CARS);
 532
 533         // Write a car entry to the new leader - should switch to local Tx
 534
 535         writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 536
 537         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 538         YangInstanceIdentifier car1Path = CarsModel.newCarPath("optima");
 539         writeTx.merge(car1Path, car1);
 540
 541         followerTestKit.doCommit(writeTx.ready());
 542
 543         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car1);
 544     }
 545
 546     @SuppressWarnings("unchecked")
 547     @Test
 548     public void testReadyLocalTransactionForwardedToLeader() throws Exception {
 549         initDatastoresWithCars("testReadyLocalTransactionForwardedToLeader");
 550         followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), "cars");
 551
 552         Optional<ActorRef> carsFollowerShard = followerDistributedDataStore.getActorContext().findLocalShard("cars");
 553         assertEquals("Cars follower shard found", true, carsFollowerShard.isPresent());
 554
 555         TipProducingDataTree dataTree = InMemoryDataTreeFactory.getInstance().create(TreeType.OPERATIONAL);
 556         dataTree.setSchemaContext(SchemaContextHelper.full());
 557
 558         // Send a tx with immediate commit.
 559
 560         DataTreeModification modification = dataTree.takeSnapshot().newModification();
 561         new WriteModification(CarsModel.BASE_PATH, CarsModel.emptyContainer()).apply(modification);
 562         new MergeModification(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()).apply(modification);
 563
 564         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 565         new WriteModification(CarsModel.newCarPath("optima"), car1).apply(modification);
 566         modification.ready();
 567
 568         ReadyLocalTransaction readyLocal = new ReadyLocalTransaction("tx-1" , modification, true);
 569
 570         carsFollowerShard.get().tell(readyLocal, followerTestKit.getRef());
 571         Object resp = followerTestKit.expectMsgClass(Object.class);
 572         if(resp instanceof akka.actor.Status.Failure) {
 573             throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause());
 574         }
 575
 576         assertEquals("Response type", CommitTransactionReply.class, resp.getClass());
 577
 578         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1);
 579
 580         // Send another tx without immediate commit.
 581
 582         modification = dataTree.takeSnapshot().newModification();
 583         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(30000));
 584         new WriteModification(CarsModel.newCarPath("sportage"), car2).apply(modification);
 585         modification.ready();
 586
 587         readyLocal = new ReadyLocalTransaction("tx-2" , modification, false);
 588
 589         carsFollowerShard.get().tell(readyLocal, followerTestKit.getRef());
 590         resp = followerTestKit.expectMsgClass(Object.class);
 591         if(resp instanceof akka.actor.Status.Failure) {
 592             throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause());
 593         }
 594
 595         assertEquals("Response type", ReadyTransactionReply.class, resp.getClass());
 596
 597         ActorSelection txActor = leaderDistributedDataStore.getActorContext().actorSelection(
 598                 ((ReadyTransactionReply)resp).getCohortPath());
 599
 600         Supplier<Short> versionSupplier = Mockito.mock(Supplier.class);
 601         Mockito.doReturn(DataStoreVersions.CURRENT_VERSION).when(versionSupplier).get();
 602         ThreePhaseCommitCohortProxy cohort = new ThreePhaseCommitCohortProxy(
 603                 leaderDistributedDataStore.getActorContext(), Arrays.asList(
 604                         new ThreePhaseCommitCohortProxy.CohortInfo(Futures.successful(txActor), versionSupplier)), "tx-2");
 605         cohort.canCommit().get(5, TimeUnit.SECONDS);
 606         cohort.preCommit().get(5, TimeUnit.SECONDS);
 607         cohort.commit().get(5, TimeUnit.SECONDS);
 608
 609         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 610     }
 611
 612     @SuppressWarnings("unchecked")
 613     @Test
 614     public void testForwardedReadyTransactionForwardedToLeader() throws Exception {
 615         initDatastoresWithCars("testForwardedReadyTransactionForwardedToLeader");
 616         followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), "cars");
 617
 618         Optional<ActorRef> carsFollowerShard = followerDistributedDataStore.getActorContext().findLocalShard("cars");
 619         assertEquals("Cars follower shard found", true, carsFollowerShard.isPresent());
 620
 621         carsFollowerShard.get().tell(GetShardDataTree.INSTANCE, followerTestKit.getRef());
 622         DataTree dataTree = followerTestKit.expectMsgClass(DataTree.class);
 623
 624         // Send a tx with immediate commit.
 625
 626         DataTreeModification modification = dataTree.takeSnapshot().newModification();
 627         new WriteModification(CarsModel.BASE_PATH, CarsModel.emptyContainer()).apply(modification);
 628         new MergeModification(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()).apply(modification);
 629
 630         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 631         new WriteModification(CarsModel.newCarPath("optima"), car1).apply(modification);
 632
 633         ForwardedReadyTransaction forwardedReady = new ForwardedReadyTransaction("tx-1",
 634                 DataStoreVersions.CURRENT_VERSION, new ReadWriteShardDataTreeTransaction(
 635                         Mockito.mock(ShardDataTreeTransactionParent.class), "tx-1", modification), true);
 636
 637         carsFollowerShard.get().tell(forwardedReady, followerTestKit.getRef());
 638         Object resp = followerTestKit.expectMsgClass(Object.class);
 639         if(resp instanceof akka.actor.Status.Failure) {
 640             throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause());
 641         }
 642
 643         assertEquals("Response type", CommitTransactionReply.class, resp.getClass());
 644
 645         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1);
 646
 647         // Send another tx without immediate commit.
 648
 649         modification = dataTree.takeSnapshot().newModification();
 650         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(30000));
 651         new WriteModification(CarsModel.newCarPath("sportage"), car2).apply(modification);
 652
 653         forwardedReady = new ForwardedReadyTransaction("tx-2",
 654                 DataStoreVersions.CURRENT_VERSION, new ReadWriteShardDataTreeTransaction(
 655                         Mockito.mock(ShardDataTreeTransactionParent.class), "tx-2", modification), false);
 656
 657         carsFollowerShard.get().tell(forwardedReady, followerTestKit.getRef());
 658         resp = followerTestKit.expectMsgClass(Object.class);
 659         if(resp instanceof akka.actor.Status.Failure) {
 660             throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause());
 661         }
 662
 663         assertEquals("Response type", ReadyTransactionReply.class, resp.getClass());
 664
 665         ActorSelection txActor = leaderDistributedDataStore.getActorContext().actorSelection(
 666                 ((ReadyTransactionReply)resp).getCohortPath());
 667
 668         Supplier<Short> versionSupplier = Mockito.mock(Supplier.class);
 669         Mockito.doReturn(DataStoreVersions.CURRENT_VERSION).when(versionSupplier).get();
 670         ThreePhaseCommitCohortProxy cohort = new ThreePhaseCommitCohortProxy(
 671                 leaderDistributedDataStore.getActorContext(), Arrays.asList(
 672                         new ThreePhaseCommitCohortProxy.CohortInfo(Futures.successful(txActor), versionSupplier)), "tx-2");
 673         cohort.canCommit().get(5, TimeUnit.SECONDS);
 674         cohort.preCommit().get(5, TimeUnit.SECONDS);
 675         cohort.commit().get(5, TimeUnit.SECONDS);
 676
 677         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 678     }
 679
 680     @Test
 681     public void testTransactionForwardedToLeaderAfterRetry() throws Exception {
 682         followerDatastoreContextBuilder.shardBatchedModificationCount(2);
 683         leaderDatastoreContextBuilder.shardBatchedModificationCount(2);
 684         initDatastoresWithCarsAndPeople("testTransactionForwardedToLeaderAfterRetry");
 685
 686         // Do an initial write to get the primary shard info cached.
 687
 688         DOMStoreWriteTransaction initialWriteTx = followerDistributedDataStore.newWriteOnlyTransaction();
 689         initialWriteTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 690         initialWriteTx.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 691         followerTestKit.doCommit(initialWriteTx.ready());
 692
 693         // Wait for the commit to be replicated to the follower.
 694
 695         MemberNode.verifyRaftState(followerDistributedDataStore, "cars", new RaftStateVerifier() {
 696             @Override
 697             public void verify(OnDemandRaftState raftState) {
 698                 assertEquals("getLastApplied", 0, raftState.getLastApplied());
 699             }
 700         });
 701
 702         // Prepare, ready and canCommit a WO tx that writes to 2 shards. This will become the current tx in
 703         // the leader shard.
 704
 705         DOMStoreWriteTransaction writeTx1 = followerDistributedDataStore.newWriteOnlyTransaction();
 706         writeTx1.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 707         writeTx1.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 708         DOMStoreThreePhaseCommitCohort writeTx1Cohort = writeTx1.ready();
 709         ListenableFuture<Boolean> writeTx1CanCommit = writeTx1Cohort.canCommit();
 710         writeTx1CanCommit.get(5, TimeUnit.SECONDS);
 711
 712         // Prepare and ready another WO tx that writes to 2 shards but don't canCommit yet. This will be queued
 713         // in the leader shard.
 714
 715         DOMStoreWriteTransaction writeTx2 = followerDistributedDataStore.newWriteOnlyTransaction();
 716         LinkedList<MapEntryNode> cars = new LinkedList<>();
 717         int carIndex = 1;
 718         cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex)));
 719         writeTx2.write(CarsModel.newCarPath("car" + carIndex), cars.getLast());
 720         carIndex++;
 721         NormalizedNode<?, ?> people = PeopleModel.newPersonMapNode();
 722         writeTx2.write(PeopleModel.PERSON_LIST_PATH, people);
 723         DOMStoreThreePhaseCommitCohort writeTx2Cohort = writeTx2.ready();
 724
 725         // Prepare another WO that writes to a single shard and thus will be directly committed on ready. This
 726         // tx writes 5 cars so 2 BatchedModidifications messages will be sent initially and cached in the
 727         // leader shard (with shardBatchedModificationCount set to 2). The 3rd BatchedModidifications will be
 728         // sent on ready.
 729
 730         DOMStoreWriteTransaction writeTx3 = followerDistributedDataStore.newWriteOnlyTransaction();
 731         for(int i = 1; i <= 5; i++, carIndex++) {
 732             cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex)));
 733             writeTx3.write(CarsModel.newCarPath("car" + carIndex), cars.getLast());
 734         }
 735
 736         // Prepare another WO that writes to a single shard. This will send a single BatchedModidifications
 737         // message on ready.
 738
 739         DOMStoreWriteTransaction writeTx4 = followerDistributedDataStore.newWriteOnlyTransaction();
 740         cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex)));
 741         writeTx4.write(CarsModel.newCarPath("car" + carIndex), cars.getLast());
 742         carIndex++;
 743
 744         // Prepare a RW tx that will create a tx actor and send a ForwardedReadyTransaciton message to the
 745         // leader shard on ready.
 746
 747         DOMStoreReadWriteTransaction readWriteTx = followerDistributedDataStore.newReadWriteTransaction();
 748         cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex)));
 749         readWriteTx.write(CarsModel.newCarPath("car" + carIndex), cars.getLast());
 750
 751         IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", new ShardStatsVerifier() {
 752             @Override
 753             public void verify(ShardStats stats) {
 754                 assertEquals("getReadWriteTransactionCount", 1, stats.getReadWriteTransactionCount());
 755             }
 756         });
 757
 758         // Disable elections on the leader so it switches to follower.
 759
 760         sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder.
 761                 customRaftPolicyImplementation(DisableElectionsRaftPolicy.class.getName()).
 762                 shardElectionTimeoutFactor(10));
 763
 764         leaderTestKit.waitUntilNoLeader(leaderDistributedDataStore.getActorContext(), "cars");
 765
 766         // Submit all tx's - the messages should get queued for retry.
 767
 768         ListenableFuture<Boolean> writeTx2CanCommit = writeTx2Cohort.canCommit();
 769         DOMStoreThreePhaseCommitCohort writeTx3Cohort = writeTx3.ready();
 770         DOMStoreThreePhaseCommitCohort writeTx4Cohort = writeTx4.ready();
 771         DOMStoreThreePhaseCommitCohort rwTxCohort = readWriteTx.ready();
 772
 773         // Enable elections on the other follower so it becomes the leader, at which point the
 774         // tx's should get forwarded from the previous leader to the new leader to complete the commits.
 775
 776         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder.
 777                 customRaftPolicyImplementation(null).shardElectionTimeoutFactor(1));
 778
 779         followerTestKit.doCommit(writeTx1CanCommit, writeTx1Cohort);
 780         followerTestKit.doCommit(writeTx2CanCommit, writeTx2Cohort);
 781         followerTestKit.doCommit(writeTx3Cohort);
 782         followerTestKit.doCommit(writeTx4Cohort);
 783         followerTestKit.doCommit(rwTxCohort);
 784
 785         DOMStoreReadTransaction readTx = leaderDistributedDataStore.newReadOnlyTransaction();
 786         verifyCars(readTx, cars.toArray(new MapEntryNode[cars.size()]));
 787         verifyNode(readTx, PeopleModel.PERSON_LIST_PATH, people);
 788     }
 789
 790     @Test
 791     public void testLeadershipTransferOnShutdown() throws Exception {
 792         leaderDatastoreContextBuilder.shardBatchedModificationCount(1);
 793         followerDatastoreContextBuilder.shardElectionTimeoutFactor(10).customRaftPolicyImplementation(null);
 794         String testName = "testLeadershipTransferOnShutdown";
 795         initDatastores(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, CARS_AND_PEOPLE);
 796
 797         IntegrationTestKit follower2TestKit = new IntegrationTestKit(follower2System, followerDatastoreContextBuilder);
 798         DistributedDataStore follower2DistributedDataStore = follower2TestKit.setupDistributedDataStore(testName,
 799                 MODULE_SHARDS_CARS_PEOPLE_1_2_3, false);
 800
 801         // Create and submit a couple tx's so they're pending.
 802
 803         DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 804         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 805         writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 806         writeTx.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 807         DOMStoreThreePhaseCommitCohort cohort1 = writeTx.ready();
 808
 809         IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", new ShardStatsVerifier() {
 810             @Override
 811             public void verify(ShardStats stats) {
 812                 assertEquals("getTxCohortCacheSize", 1, stats.getTxCohortCacheSize());
 813             }
 814         });
 815
 816         writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 817         MapEntryNode car = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 818         writeTx.write(CarsModel.newCarPath("optima"), car);
 819         DOMStoreThreePhaseCommitCohort cohort2 = writeTx.ready();
 820
 821         IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", new ShardStatsVerifier() {
 822             @Override
 823             public void verify(ShardStats stats) {
 824                 assertEquals("getTxCohortCacheSize", 2, stats.getTxCohortCacheSize());
 825             }
 826         });
 827
 828         // Gracefully stop the leader via a Shutdown message.
 829
 830         sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder.
 831                 shardElectionTimeoutFactor(100));
 832
 833         FiniteDuration duration = FiniteDuration.create(5, TimeUnit.SECONDS);
 834         Future<ActorRef> future = leaderDistributedDataStore.getActorContext().findLocalShardAsync("cars");
 835         ActorRef leaderActor = Await.result(future, duration);
 836
 837         Future<Boolean> stopFuture = Patterns.gracefulStop(leaderActor, duration, Shutdown.INSTANCE);
 838
 839         // Commit the 2 transactions. They should finish and succeed.
 840
 841         followerTestKit.doCommit(cohort1);
 842         followerTestKit.doCommit(cohort2);
 843
 844         // Wait for the leader actor stopped.
 845
 846         Boolean stopped = Await.result(stopFuture, duration);
 847         assertEquals("Stopped", Boolean.TRUE, stopped);
 848
 849         // Verify leadership was transferred by reading the committed data from the other nodes.
 850
 851         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car);
 852         verifyCars(follower2DistributedDataStore.newReadOnlyTransaction(), car);
 853     }
 854
 855     @Test
 856     public void testTransactionWithIsolatedLeader() throws Throwable {
 857         leaderDatastoreContextBuilder.shardIsolatedLeaderCheckIntervalInMillis(200);
 858         String testName = "testTransactionWithIsolatedLeader";
 859         initDatastoresWithCars(testName);
 860
 861         DOMStoreWriteTransaction failWriteTx = leaderDistributedDataStore.newWriteOnlyTransaction();
 862         failWriteTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 863
 864         DOMStoreWriteTransaction successWriteTx = leaderDistributedDataStore.newWriteOnlyTransaction();
 865         successWriteTx.merge(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 866
 867         followerTestKit.watch(followerDistributedDataStore.getActorContext().getShardManager());
 868         followerDistributedDataStore.close();
 869         followerTestKit.expectTerminated(followerDistributedDataStore.getActorContext().getShardManager());
 870
 871         MemberNode.verifyRaftState(leaderDistributedDataStore, "cars", new RaftStateVerifier() {
 872             @Override
 873             public void verify(OnDemandRaftState raftState) {
 874                 assertEquals("getRaftState", "IsolatedLeader", raftState.getRaftState());
 875             }
 876         });
 877
 878         try {
 879             leaderTestKit.doCommit(failWriteTx.ready());
 880             fail("Expected NoShardLeaderException");
 881         } catch (ExecutionException e) {
 882             assertEquals("getCause", NoShardLeaderException.class, e.getCause().getClass());
 883         }
 884
 885         sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder.
 886                 shardElectionTimeoutFactor(100));
 887
 888         DOMStoreThreePhaseCommitCohort writeTxCohort = successWriteTx.ready();
 889
 890         followerDistributedDataStore = followerTestKit.setupDistributedDataStore(testName,
 891                 MODULE_SHARDS_CARS_ONLY_1_2, false, CARS);
 892
 893         leaderTestKit.doCommit(writeTxCohort);
 894     }
 895
 896     @Test(expected=AskTimeoutException.class)
 897     public void testTransactionWithShardLeaderNotResponding() throws Throwable {
 898         initDatastoresWithCars("testTransactionWithShardLeaderNotResponding");
 899
 900         // Do an initial read to get the primary shard info cached.
 901
 902         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 903         readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS);
 904
 905         // Shutdown the leader and try to create a new tx.
 906
 907         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 908
 909         followerDatastoreContextBuilder.operationTimeoutInMillis(50).shardElectionTimeoutFactor(1);
 910         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder);
 911
 912         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 913
 914         rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 915
 916         try {
 917             followerTestKit.doCommit(rwTx.ready());
 918         } catch (ExecutionException e) {
 919             assertTrue("Expected ShardLeaderNotRespondingException cause. Actual: " + e.getCause(),
 920                     e.getCause() instanceof ShardLeaderNotRespondingException);
 921             assertNotNull("Expected a nested cause", e.getCause().getCause());
 922             throw e.getCause().getCause();
 923         }
 924     }
 925
 926     @Test(expected=NoShardLeaderException.class)
 927     public void testTransactionWithCreateTxFailureDueToNoLeader() throws Throwable {
 928         initDatastoresWithCars("testTransactionWithCreateTxFailureDueToNoLeader");
 929
 930         // Do an initial read to get the primary shard info cached.
 931
 932         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 933         readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS);
 934
 935         // Shutdown the leader and try to create a new tx.
 936
 937         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 938
 939         Uninterruptibles.sleepUninterruptibly(100, TimeUnit.MILLISECONDS);
 940
 941         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder.
 942                 operationTimeoutInMillis(10).shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null));
 943
 944         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 945
 946         rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 947
 948         try {
 949             followerTestKit.doCommit(rwTx.ready());
 950         } catch (ExecutionException e) {
 951             throw e.getCause();
 952         }
 953     }
 954
 955     @Test
 956     public void testTransactionRetryWithInitialAskTimeoutExOnCreateTx() throws Exception {
 957         String testName = "testTransactionRetryWithInitialAskTimeoutExOnCreateTx";
 958         initDatastores(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, CARS);
 959
 960         DatastoreContext.Builder follower2DatastoreContextBuilder = DatastoreContext.newBuilder().
 961                 shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5);
 962         IntegrationTestKit follower2TestKit = new IntegrationTestKit(follower2System, follower2DatastoreContextBuilder);
 963         follower2TestKit.setupDistributedDataStore(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, false, CARS);
 964
 965         followerTestKit.waitForMembersUp("member-1", "member-3");
 966         follower2TestKit.waitForMembersUp("member-1", "member-2");
 967
 968         // Do an initial read to get the primary shard info cached.
 969
 970         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 971         readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS);
 972
 973         // Shutdown the leader and try to create a new tx.
 974
 975         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 976
 977         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder.
 978                 operationTimeoutInMillis(500).shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null));
 979
 980         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 981
 982         rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 983
 984         followerTestKit.doCommit(rwTx.ready());
 985     }
 986
 987     private static void sendDatastoreContextUpdate(DistributedDataStore dataStore, final Builder builder) {
 988         final Builder newBuilder = DatastoreContext.newBuilderFrom(builder.build());
 989         DatastoreContextFactory mockContextFactory = Mockito.mock(DatastoreContextFactory.class);
 990         Answer<DatastoreContext> answer = new Answer<DatastoreContext>() {
 991             @Override
 992             public DatastoreContext answer(InvocationOnMock invocation) {
 993                 return newBuilder.build();
 994             }
 995         };
 996         Mockito.doAnswer(answer).when(mockContextFactory).getBaseDatastoreContext();
 997         Mockito.doAnswer(answer).when(mockContextFactory).getShardDatastoreContext(Mockito.anyString());
 998         dataStore.onDatastoreContextUpdated(mockContextFactory);
 999     }
1000 }