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         if (followerDistributedDataStore != null) {
 145             leaderDistributedDataStore.close();
 146         }
 147         if (leaderDistributedDataStore != null) {
 148             leaderDistributedDataStore.close();
 149         }
 150
 151         JavaTestKit.shutdownActorSystem(leaderSystem);
 152         JavaTestKit.shutdownActorSystem(followerSystem);
 153         JavaTestKit.shutdownActorSystem(follower2System);
 154     }
 155
 156     private void initDatastoresWithCars(String type) {
 157         initDatastores(type, MODULE_SHARDS_CARS_ONLY_1_2, CARS);
 158     }
 159
 160     private void initDatastoresWithCarsAndPeople(String type) {
 161         initDatastores(type, MODULE_SHARDS_CARS_PEOPLE_1_2, CARS_AND_PEOPLE);
 162     }
 163
 164     private void initDatastores(String type, String moduleShardsConfig, String[] shards) {
 165         leaderTestKit = new IntegrationTestKit(leaderSystem, leaderDatastoreContextBuilder);
 166
 167         leaderDistributedDataStore = leaderTestKit.setupDistributedDataStore(type, moduleShardsConfig, false, shards);
 168
 169         followerTestKit = new IntegrationTestKit(followerSystem, followerDatastoreContextBuilder);
 170         followerDistributedDataStore = followerTestKit.setupDistributedDataStore(type, moduleShardsConfig, false, shards);
 171
 172         leaderTestKit.waitUntilLeader(leaderDistributedDataStore.getActorContext(), shards);
 173     }
 174
 175     private static void verifyCars(DOMStoreReadTransaction readTx, MapEntryNode... entries) throws Exception {
 176         Optional<NormalizedNode<?, ?>> optional = readTx.read(CarsModel.CAR_LIST_PATH).get(5, TimeUnit.SECONDS);
 177         assertEquals("isPresent", true, optional.isPresent());
 178
 179         CollectionNodeBuilder<MapEntryNode, MapNode> listBuilder = ImmutableNodes.mapNodeBuilder(CarsModel.CAR_QNAME);
 180         for(NormalizedNode<?, ?> entry: entries) {
 181             listBuilder.withChild((MapEntryNode) entry);
 182         }
 183
 184         assertEquals("Car list node", listBuilder.build(), optional.get());
 185     }
 186
 187     private static void verifyNode(DOMStoreReadTransaction readTx, YangInstanceIdentifier path, NormalizedNode<?, ?> expNode)
 188             throws Exception {
 189         Optional<NormalizedNode<?, ?>> optional = readTx.read(path).get(5, TimeUnit.SECONDS);
 190         assertEquals("isPresent", true, optional.isPresent());
 191         assertEquals("Data node", expNode, optional.get());
 192     }
 193
 194     private static void verifyExists(DOMStoreReadTransaction readTx, YangInstanceIdentifier path) throws Exception {
 195         Boolean exists = readTx.exists(path).get(5, TimeUnit.SECONDS);
 196         assertEquals("exists", true, exists);
 197     }
 198
 199     @Test
 200     public void testWriteTransactionWithSingleShard() throws Exception {
 201         String testName = "testWriteTransactionWithSingleShard";
 202         initDatastoresWithCars(testName);
 203
 204         String followerCarShardName = "member-2-shard-cars-" + testName;
 205         InMemoryJournal.addWriteMessagesCompleteLatch(followerCarShardName, 2, ApplyJournalEntries.class );
 206
 207         DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 208         assertNotNull("newWriteOnlyTransaction returned null", writeTx);
 209
 210         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 211         writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 212
 213         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 214         YangInstanceIdentifier car1Path = CarsModel.newCarPath("optima");
 215         writeTx.merge(car1Path, car1);
 216
 217         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(25000));
 218         YangInstanceIdentifier car2Path = CarsModel.newCarPath("sportage");
 219         writeTx.merge(car2Path, car2);
 220
 221         followerTestKit.doCommit(writeTx.ready());
 222
 223         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 224
 225         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 226
 227         // Test delete
 228
 229         writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 230
 231         writeTx.delete(car1Path);
 232
 233         followerTestKit.doCommit(writeTx.ready());
 234
 235         verifyExists(followerDistributedDataStore.newReadOnlyTransaction(), car2Path);
 236
 237         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car2);
 238
 239         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car2);
 240
 241         // Re-instate the follower member 2 as a single-node to verify replication and recovery.
 242
 243         InMemoryJournal.waitForWriteMessagesComplete(followerCarShardName);
 244
 245         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 246         JavaTestKit.shutdownActorSystem(followerSystem, null, true);
 247
 248         ActorSystem newSystem = ActorSystem.create("reinstated-member2", ConfigFactory.load().getConfig("Member2"));
 249
 250         try (DistributedDataStore member2Datastore = new IntegrationTestKit(newSystem, leaderDatastoreContextBuilder).
 251                 setupDistributedDataStore(testName, "module-shards-member2", true, CARS_AND_PEOPLE)) {
 252             verifyCars(member2Datastore.newReadOnlyTransaction(), car2);
 253         }
 254
 255         JavaTestKit.shutdownActorSystem(newSystem);
 256     }
 257
 258     @Test
 259     public void testReadWriteTransactionWithSingleShard() throws Exception {
 260         initDatastoresWithCars("testReadWriteTransactionWithSingleShard");
 261
 262         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 263         assertNotNull("newReadWriteTransaction returned null", rwTx);
 264
 265         rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 266         rwTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 267
 268         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 269         rwTx.merge(CarsModel.newCarPath("optima"), car1);
 270
 271         verifyCars(rwTx, car1);
 272
 273         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(25000));
 274         YangInstanceIdentifier car2Path = CarsModel.newCarPath("sportage");
 275         rwTx.merge(car2Path, car2);
 276
 277         verifyExists(rwTx, car2Path);
 278
 279         followerTestKit.doCommit(rwTx.ready());
 280
 281         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 282     }
 283
 284     @Test
 285     public void testWriteTransactionWithMultipleShards() throws Exception {
 286         initDatastoresWithCarsAndPeople("testWriteTransactionWithMultipleShards");
 287
 288         DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 289         assertNotNull("newWriteOnlyTransaction returned null", writeTx);
 290
 291         YangInstanceIdentifier carsPath = CarsModel.BASE_PATH;
 292         NormalizedNode<?, ?> carsNode = CarsModel.emptyContainer();
 293         writeTx.write(carsPath, carsNode);
 294
 295         YangInstanceIdentifier peoplePath = PeopleModel.BASE_PATH;
 296         NormalizedNode<?, ?> peopleNode = PeopleModel.emptyContainer();
 297         writeTx.write(peoplePath, peopleNode);
 298
 299         followerTestKit.doCommit(writeTx.ready());
 300
 301         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 302
 303         verifyNode(readTx, carsPath, carsNode);
 304         verifyNode(readTx, peoplePath, peopleNode);
 305     }
 306
 307     @Test
 308     public void testReadWriteTransactionWithMultipleShards() throws Exception {
 309         initDatastoresWithCarsAndPeople("testReadWriteTransactionWithMultipleShards");
 310
 311         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 312         assertNotNull("newReadWriteTransaction returned null", rwTx);
 313
 314         YangInstanceIdentifier carsPath = CarsModel.BASE_PATH;
 315         NormalizedNode<?, ?> carsNode = CarsModel.emptyContainer();
 316         rwTx.write(carsPath, carsNode);
 317
 318         YangInstanceIdentifier peoplePath = PeopleModel.BASE_PATH;
 319         NormalizedNode<?, ?> peopleNode = PeopleModel.emptyContainer();
 320         rwTx.write(peoplePath, peopleNode);
 321
 322         followerTestKit.doCommit(rwTx.ready());
 323
 324         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 325
 326         verifyNode(readTx, carsPath, carsNode);
 327         verifyNode(readTx, peoplePath, peopleNode);
 328     }
 329
 330     @Test
 331     public void testTransactionChainWithSingleShard() throws Exception {
 332         initDatastoresWithCars("testTransactionChainWithSingleShard");
 333
 334         DOMStoreTransactionChain txChain = followerDistributedDataStore.createTransactionChain();
 335
 336         // Add the top-level cars container with write-only.
 337
 338         DOMStoreWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
 339         assertNotNull("newWriteOnlyTransaction returned null", writeTx);
 340
 341         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 342
 343         writeTx.ready();
 344
 345         // Verify the top-level cars container with read-only.
 346
 347         verifyNode(txChain.newReadOnlyTransaction(), CarsModel.BASE_PATH, CarsModel.emptyContainer());
 348
 349         // Perform car operations with read-write.
 350
 351         DOMStoreReadWriteTransaction rwTx = txChain.newReadWriteTransaction();
 352
 353         verifyNode(rwTx, CarsModel.BASE_PATH, CarsModel.emptyContainer());
 354
 355         rwTx.merge(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 356
 357         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 358         YangInstanceIdentifier car1Path = CarsModel.newCarPath("optima");
 359         rwTx.write(car1Path, car1);
 360
 361         verifyExists(rwTx, car1Path);
 362
 363         verifyCars(rwTx, car1);
 364
 365         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(25000));
 366         rwTx.merge(CarsModel.newCarPath("sportage"), car2);
 367
 368         rwTx.delete(car1Path);
 369
 370         followerTestKit.doCommit(rwTx.ready());
 371
 372         txChain.close();
 373
 374         verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car2);
 375     }
 376
 377     @Test
 378     public void testTransactionChainWithMultipleShards() throws Exception{
 379         initDatastoresWithCarsAndPeople("testTransactionChainWithMultipleShards");
 380
 381         DOMStoreTransactionChain txChain = followerDistributedDataStore.createTransactionChain();
 382
 383         DOMStoreWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
 384         assertNotNull("newWriteOnlyTransaction returned null", writeTx);
 385
 386         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 387         writeTx.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 388
 389         writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 390         writeTx.write(PeopleModel.PERSON_LIST_PATH, PeopleModel.newPersonMapNode());
 391
 392         followerTestKit.doCommit(writeTx.ready());
 393
 394         DOMStoreReadWriteTransaction readWriteTx = txChain.newReadWriteTransaction();
 395
 396         MapEntryNode car = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 397         YangInstanceIdentifier carPath = CarsModel.newCarPath("optima");
 398         readWriteTx.write(carPath, car);
 399
 400         MapEntryNode person = PeopleModel.newPersonEntry("jack");
 401         YangInstanceIdentifier personPath = PeopleModel.newPersonPath("jack");
 402         readWriteTx.merge(personPath, person);
 403
 404         Optional<NormalizedNode<?, ?>> optional = readWriteTx.read(carPath).get(5, TimeUnit.SECONDS);
 405         assertEquals("isPresent", true, optional.isPresent());
 406         assertEquals("Data node", car, optional.get());
 407
 408         optional = readWriteTx.read(personPath).get(5, TimeUnit.SECONDS);
 409         assertEquals("isPresent", true, optional.isPresent());
 410         assertEquals("Data node", person, optional.get());
 411
 412         DOMStoreThreePhaseCommitCohort cohort2 = readWriteTx.ready();
 413
 414         writeTx = txChain.newWriteOnlyTransaction();
 415
 416         writeTx.delete(personPath);
 417
 418         DOMStoreThreePhaseCommitCohort cohort3 = writeTx.ready();
 419
 420         followerTestKit.doCommit(cohort2);
 421         followerTestKit.doCommit(cohort3);
 422
 423         txChain.close();
 424
 425         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 426         verifyCars(readTx, car);
 427
 428         optional = readTx.read(personPath).get(5, TimeUnit.SECONDS);
 429         assertEquals("isPresent", false, optional.isPresent());
 430     }
 431
 432     @Test
 433     public void testChainedTransactionFailureWithSingleShard() throws Exception {
 434         initDatastoresWithCars("testChainedTransactionFailureWithSingleShard");
 435
 436         ConcurrentDOMDataBroker broker = new ConcurrentDOMDataBroker(
 437                 ImmutableMap.<LogicalDatastoreType, DOMStore>builder().put(
 438                         LogicalDatastoreType.CONFIGURATION, followerDistributedDataStore).build(),
 439                         MoreExecutors.directExecutor());
 440
 441         TransactionChainListener listener = Mockito.mock(TransactionChainListener.class);
 442         DOMTransactionChain txChain = broker.createTransactionChain(listener);
 443
 444         DOMDataWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
 445
 446         ContainerNode invalidData = ImmutableContainerNodeBuilder.create().withNodeIdentifier(
 447                 new YangInstanceIdentifier.NodeIdentifier(CarsModel.BASE_QNAME)).
 448                     withChild(ImmutableNodes.leafNode(TestModel.JUNK_QNAME, "junk")).build();
 449
 450         writeTx.merge(LogicalDatastoreType.CONFIGURATION, CarsModel.BASE_PATH, invalidData);
 451
 452         try {
 453             writeTx.submit().checkedGet(5, TimeUnit.SECONDS);
 454             fail("Expected TransactionCommitFailedException");
 455         } catch (TransactionCommitFailedException e) {
 456             // Expected
 457         }
 458
 459         verify(listener, timeout(5000)).onTransactionChainFailed(eq(txChain), eq(writeTx), any(Throwable.class));
 460
 461         txChain.close();
 462         broker.close();
 463     }
 464
 465     @Test
 466     public void testChainedTransactionFailureWithMultipleShards() throws Exception {
 467         initDatastoresWithCarsAndPeople("testChainedTransactionFailureWithMultipleShards");
 468
 469         ConcurrentDOMDataBroker broker = new ConcurrentDOMDataBroker(
 470                 ImmutableMap.<LogicalDatastoreType, DOMStore>builder().put(
 471                         LogicalDatastoreType.CONFIGURATION, followerDistributedDataStore).build(),
 472                         MoreExecutors.directExecutor());
 473
 474         TransactionChainListener listener = Mockito.mock(TransactionChainListener.class);
 475         DOMTransactionChain txChain = broker.createTransactionChain(listener);
 476
 477         DOMDataWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
 478
 479         writeTx.put(LogicalDatastoreType.CONFIGURATION, PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 480
 481         ContainerNode invalidData = ImmutableContainerNodeBuilder.create().withNodeIdentifier(
 482                 new YangInstanceIdentifier.NodeIdentifier(CarsModel.BASE_QNAME)).
 483                     withChild(ImmutableNodes.leafNode(TestModel.JUNK_QNAME, "junk")).build();
 484
 485         // Note that merge will validate the data and fail but put succeeds b/c deep validation is not
 486         // done for put for performance reasons.
 487         writeTx.merge(LogicalDatastoreType.CONFIGURATION, CarsModel.BASE_PATH, invalidData);
 488
 489         try {
 490             writeTx.submit().checkedGet(5, TimeUnit.SECONDS);
 491             fail("Expected TransactionCommitFailedException");
 492         } catch (TransactionCommitFailedException e) {
 493             // Expected
 494         }
 495
 496         verify(listener, timeout(5000)).onTransactionChainFailed(eq(txChain), eq(writeTx), any(Throwable.class));
 497
 498         txChain.close();
 499         broker.close();
 500     }
 501
 502     @Test
 503     public void testSingleShardTransactionsWithLeaderChanges() throws Exception {
 504         String testName = "testSingleShardTransactionsWithLeaderChanges";
 505         initDatastoresWithCars(testName);
 506
 507         String followerCarShardName = "member-2-shard-cars-" + testName;
 508         InMemoryJournal.addWriteMessagesCompleteLatch(followerCarShardName, 1, ApplyJournalEntries.class );
 509
 510         // Write top-level car container from the follower so it uses a remote Tx.
 511
 512         DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 513
 514         writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 515         writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 516
 517         followerTestKit.doCommit(writeTx.ready());
 518
 519         InMemoryJournal.waitForWriteMessagesComplete(followerCarShardName);
 520
 521         // Switch the leader to the follower
 522
 523         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder.
 524                 shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null));
 525
 526         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 527
 528         followerTestKit.waitUntilNoLeader(followerDistributedDataStore.getActorContext(), CARS);
 529
 530         leaderSystem = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 531         Cluster.get(leaderSystem).join(MEMBER_2_ADDRESS);
 532
 533         DatastoreContext.Builder newMember1Builder = DatastoreContext.newBuilder().
 534                 shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5);
 535         IntegrationTestKit newMember1TestKit = new IntegrationTestKit(leaderSystem, newMember1Builder);
 536
 537         try (DistributedDataStore ds =
 538                 newMember1TestKit.setupDistributedDataStore(testName, MODULE_SHARDS_CARS_ONLY_1_2, false, CARS)) {
 539
 540             followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), CARS);
 541
 542             // Write a car entry to the new leader - should switch to local Tx
 543
 544             writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 545
 546             MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 547             YangInstanceIdentifier car1Path = CarsModel.newCarPath("optima");
 548             writeTx.merge(car1Path, car1);
 549
 550             followerTestKit.doCommit(writeTx.ready());
 551
 552             verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car1);
 553         }
 554     }
 555
 556     @SuppressWarnings("unchecked")
 557     @Test
 558     public void testReadyLocalTransactionForwardedToLeader() throws Exception {
 559         initDatastoresWithCars("testReadyLocalTransactionForwardedToLeader");
 560         followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), "cars");
 561
 562         Optional<ActorRef> carsFollowerShard = followerDistributedDataStore.getActorContext().findLocalShard("cars");
 563         assertEquals("Cars follower shard found", true, carsFollowerShard.isPresent());
 564
 565         TipProducingDataTree dataTree = InMemoryDataTreeFactory.getInstance().create(TreeType.OPERATIONAL);
 566         dataTree.setSchemaContext(SchemaContextHelper.full());
 567
 568         // Send a tx with immediate commit.
 569
 570         DataTreeModification modification = dataTree.takeSnapshot().newModification();
 571         new WriteModification(CarsModel.BASE_PATH, CarsModel.emptyContainer()).apply(modification);
 572         new MergeModification(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()).apply(modification);
 573
 574         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 575         new WriteModification(CarsModel.newCarPath("optima"), car1).apply(modification);
 576         modification.ready();
 577
 578         ReadyLocalTransaction readyLocal = new ReadyLocalTransaction("tx-1" , modification, true);
 579
 580         carsFollowerShard.get().tell(readyLocal, followerTestKit.getRef());
 581         Object resp = followerTestKit.expectMsgClass(Object.class);
 582         if(resp instanceof akka.actor.Status.Failure) {
 583             throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause());
 584         }
 585
 586         assertEquals("Response type", CommitTransactionReply.class, resp.getClass());
 587
 588         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1);
 589
 590         // Send another tx without immediate commit.
 591
 592         modification = dataTree.takeSnapshot().newModification();
 593         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(30000));
 594         new WriteModification(CarsModel.newCarPath("sportage"), car2).apply(modification);
 595         modification.ready();
 596
 597         readyLocal = new ReadyLocalTransaction("tx-2" , modification, false);
 598
 599         carsFollowerShard.get().tell(readyLocal, followerTestKit.getRef());
 600         resp = followerTestKit.expectMsgClass(Object.class);
 601         if(resp instanceof akka.actor.Status.Failure) {
 602             throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause());
 603         }
 604
 605         assertEquals("Response type", ReadyTransactionReply.class, resp.getClass());
 606
 607         ActorSelection txActor = leaderDistributedDataStore.getActorContext().actorSelection(
 608                 ((ReadyTransactionReply)resp).getCohortPath());
 609
 610         Supplier<Short> versionSupplier = Mockito.mock(Supplier.class);
 611         Mockito.doReturn(DataStoreVersions.CURRENT_VERSION).when(versionSupplier).get();
 612         ThreePhaseCommitCohortProxy cohort = new ThreePhaseCommitCohortProxy(
 613                 leaderDistributedDataStore.getActorContext(), Arrays.asList(
 614                         new ThreePhaseCommitCohortProxy.CohortInfo(Futures.successful(txActor), versionSupplier)), "tx-2");
 615         cohort.canCommit().get(5, TimeUnit.SECONDS);
 616         cohort.preCommit().get(5, TimeUnit.SECONDS);
 617         cohort.commit().get(5, TimeUnit.SECONDS);
 618
 619         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 620     }
 621
 622     @SuppressWarnings("unchecked")
 623     @Test
 624     public void testForwardedReadyTransactionForwardedToLeader() throws Exception {
 625         initDatastoresWithCars("testForwardedReadyTransactionForwardedToLeader");
 626         followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), "cars");
 627
 628         Optional<ActorRef> carsFollowerShard = followerDistributedDataStore.getActorContext().findLocalShard("cars");
 629         assertEquals("Cars follower shard found", true, carsFollowerShard.isPresent());
 630
 631         carsFollowerShard.get().tell(GetShardDataTree.INSTANCE, followerTestKit.getRef());
 632         DataTree dataTree = followerTestKit.expectMsgClass(DataTree.class);
 633
 634         // Send a tx with immediate commit.
 635
 636         DataTreeModification modification = dataTree.takeSnapshot().newModification();
 637         new WriteModification(CarsModel.BASE_PATH, CarsModel.emptyContainer()).apply(modification);
 638         new MergeModification(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()).apply(modification);
 639
 640         MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 641         new WriteModification(CarsModel.newCarPath("optima"), car1).apply(modification);
 642
 643         ForwardedReadyTransaction forwardedReady = new ForwardedReadyTransaction("tx-1",
 644                 DataStoreVersions.CURRENT_VERSION, new ReadWriteShardDataTreeTransaction(
 645                         Mockito.mock(ShardDataTreeTransactionParent.class), "tx-1", modification), true);
 646
 647         carsFollowerShard.get().tell(forwardedReady, followerTestKit.getRef());
 648         Object resp = followerTestKit.expectMsgClass(Object.class);
 649         if(resp instanceof akka.actor.Status.Failure) {
 650             throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause());
 651         }
 652
 653         assertEquals("Response type", CommitTransactionReply.class, resp.getClass());
 654
 655         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1);
 656
 657         // Send another tx without immediate commit.
 658
 659         modification = dataTree.takeSnapshot().newModification();
 660         MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(30000));
 661         new WriteModification(CarsModel.newCarPath("sportage"), car2).apply(modification);
 662
 663         forwardedReady = new ForwardedReadyTransaction("tx-2",
 664                 DataStoreVersions.CURRENT_VERSION, new ReadWriteShardDataTreeTransaction(
 665                         Mockito.mock(ShardDataTreeTransactionParent.class), "tx-2", modification), false);
 666
 667         carsFollowerShard.get().tell(forwardedReady, followerTestKit.getRef());
 668         resp = followerTestKit.expectMsgClass(Object.class);
 669         if(resp instanceof akka.actor.Status.Failure) {
 670             throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause());
 671         }
 672
 673         assertEquals("Response type", ReadyTransactionReply.class, resp.getClass());
 674
 675         ActorSelection txActor = leaderDistributedDataStore.getActorContext().actorSelection(
 676                 ((ReadyTransactionReply)resp).getCohortPath());
 677
 678         Supplier<Short> versionSupplier = Mockito.mock(Supplier.class);
 679         Mockito.doReturn(DataStoreVersions.CURRENT_VERSION).when(versionSupplier).get();
 680         ThreePhaseCommitCohortProxy cohort = new ThreePhaseCommitCohortProxy(
 681                 leaderDistributedDataStore.getActorContext(), Arrays.asList(
 682                         new ThreePhaseCommitCohortProxy.CohortInfo(Futures.successful(txActor), versionSupplier)), "tx-2");
 683         cohort.canCommit().get(5, TimeUnit.SECONDS);
 684         cohort.preCommit().get(5, TimeUnit.SECONDS);
 685         cohort.commit().get(5, TimeUnit.SECONDS);
 686
 687         verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1, car2);
 688     }
 689
 690     @Test
 691     public void testTransactionForwardedToLeaderAfterRetry() throws Exception {
 692         followerDatastoreContextBuilder.shardBatchedModificationCount(2);
 693         leaderDatastoreContextBuilder.shardBatchedModificationCount(2);
 694         initDatastoresWithCarsAndPeople("testTransactionForwardedToLeaderAfterRetry");
 695
 696         // Do an initial write to get the primary shard info cached.
 697
 698         DOMStoreWriteTransaction initialWriteTx = followerDistributedDataStore.newWriteOnlyTransaction();
 699         initialWriteTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 700         initialWriteTx.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 701         followerTestKit.doCommit(initialWriteTx.ready());
 702
 703         // Wait for the commit to be replicated to the follower.
 704
 705         MemberNode.verifyRaftState(followerDistributedDataStore, "cars", new RaftStateVerifier() {
 706             @Override
 707             public void verify(OnDemandRaftState raftState) {
 708                 assertEquals("getLastApplied", 0, raftState.getLastApplied());
 709             }
 710         });
 711
 712         // Prepare, ready and canCommit a WO tx that writes to 2 shards. This will become the current tx in
 713         // the leader shard.
 714
 715         DOMStoreWriteTransaction writeTx1 = followerDistributedDataStore.newWriteOnlyTransaction();
 716         writeTx1.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 717         writeTx1.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 718         DOMStoreThreePhaseCommitCohort writeTx1Cohort = writeTx1.ready();
 719         ListenableFuture<Boolean> writeTx1CanCommit = writeTx1Cohort.canCommit();
 720         writeTx1CanCommit.get(5, TimeUnit.SECONDS);
 721
 722         // Prepare and ready another WO tx that writes to 2 shards but don't canCommit yet. This will be queued
 723         // in the leader shard.
 724
 725         DOMStoreWriteTransaction writeTx2 = followerDistributedDataStore.newWriteOnlyTransaction();
 726         LinkedList<MapEntryNode> cars = new LinkedList<>();
 727         int carIndex = 1;
 728         cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex)));
 729         writeTx2.write(CarsModel.newCarPath("car" + carIndex), cars.getLast());
 730         carIndex++;
 731         NormalizedNode<?, ?> people = PeopleModel.newPersonMapNode();
 732         writeTx2.write(PeopleModel.PERSON_LIST_PATH, people);
 733         DOMStoreThreePhaseCommitCohort writeTx2Cohort = writeTx2.ready();
 734
 735         // Prepare another WO that writes to a single shard and thus will be directly committed on ready. This
 736         // tx writes 5 cars so 2 BatchedModidifications messages will be sent initially and cached in the
 737         // leader shard (with shardBatchedModificationCount set to 2). The 3rd BatchedModidifications will be
 738         // sent on ready.
 739
 740         DOMStoreWriteTransaction writeTx3 = followerDistributedDataStore.newWriteOnlyTransaction();
 741         for(int i = 1; i <= 5; i++, carIndex++) {
 742             cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex)));
 743             writeTx3.write(CarsModel.newCarPath("car" + carIndex), cars.getLast());
 744         }
 745
 746         // Prepare another WO that writes to a single shard. This will send a single BatchedModidifications
 747         // message on ready.
 748
 749         DOMStoreWriteTransaction writeTx4 = followerDistributedDataStore.newWriteOnlyTransaction();
 750         cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex)));
 751         writeTx4.write(CarsModel.newCarPath("car" + carIndex), cars.getLast());
 752         carIndex++;
 753
 754         // Prepare a RW tx that will create a tx actor and send a ForwardedReadyTransaciton message to the
 755         // leader shard on ready.
 756
 757         DOMStoreReadWriteTransaction readWriteTx = followerDistributedDataStore.newReadWriteTransaction();
 758         cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex)));
 759         readWriteTx.write(CarsModel.newCarPath("car" + carIndex), cars.getLast());
 760
 761         IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", new ShardStatsVerifier() {
 762             @Override
 763             public void verify(ShardStats stats) {
 764                 assertEquals("getReadWriteTransactionCount", 1, stats.getReadWriteTransactionCount());
 765             }
 766         });
 767
 768         // Disable elections on the leader so it switches to follower.
 769
 770         sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder.
 771                 customRaftPolicyImplementation(DisableElectionsRaftPolicy.class.getName()).
 772                 shardElectionTimeoutFactor(10));
 773
 774         leaderTestKit.waitUntilNoLeader(leaderDistributedDataStore.getActorContext(), "cars");
 775
 776         // Submit all tx's - the messages should get queued for retry.
 777
 778         ListenableFuture<Boolean> writeTx2CanCommit = writeTx2Cohort.canCommit();
 779         DOMStoreThreePhaseCommitCohort writeTx3Cohort = writeTx3.ready();
 780         DOMStoreThreePhaseCommitCohort writeTx4Cohort = writeTx4.ready();
 781         DOMStoreThreePhaseCommitCohort rwTxCohort = readWriteTx.ready();
 782
 783         // Enable elections on the other follower so it becomes the leader, at which point the
 784         // tx's should get forwarded from the previous leader to the new leader to complete the commits.
 785
 786         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder.
 787                 customRaftPolicyImplementation(null).shardElectionTimeoutFactor(1));
 788
 789         followerTestKit.doCommit(writeTx1CanCommit, writeTx1Cohort);
 790         followerTestKit.doCommit(writeTx2CanCommit, writeTx2Cohort);
 791         followerTestKit.doCommit(writeTx3Cohort);
 792         followerTestKit.doCommit(writeTx4Cohort);
 793         followerTestKit.doCommit(rwTxCohort);
 794
 795         DOMStoreReadTransaction readTx = leaderDistributedDataStore.newReadOnlyTransaction();
 796         verifyCars(readTx, cars.toArray(new MapEntryNode[cars.size()]));
 797         verifyNode(readTx, PeopleModel.PERSON_LIST_PATH, people);
 798     }
 799
 800     @Test
 801     public void testLeadershipTransferOnShutdown() throws Exception {
 802         leaderDatastoreContextBuilder.shardBatchedModificationCount(1);
 803         followerDatastoreContextBuilder.shardElectionTimeoutFactor(10).customRaftPolicyImplementation(null);
 804         String testName = "testLeadershipTransferOnShutdown";
 805         initDatastores(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, CARS_AND_PEOPLE);
 806
 807         IntegrationTestKit follower2TestKit = new IntegrationTestKit(follower2System, followerDatastoreContextBuilder);
 808         try (DistributedDataStore follower2DistributedDataStore = follower2TestKit.setupDistributedDataStore(testName,
 809                 MODULE_SHARDS_CARS_PEOPLE_1_2_3, false)) {
 810
 811             // Create and submit a couple tx's so they're pending.
 812
 813             DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 814             writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 815             writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
 816             writeTx.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer());
 817             DOMStoreThreePhaseCommitCohort cohort1 = writeTx.ready();
 818
 819             IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", new ShardStatsVerifier() {
 820                 @Override
 821                 public void verify(ShardStats stats) {
 822                     assertEquals("getTxCohortCacheSize", 1, stats.getTxCohortCacheSize());
 823                 }
 824             });
 825
 826             writeTx = followerDistributedDataStore.newWriteOnlyTransaction();
 827             MapEntryNode car = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000));
 828             writeTx.write(CarsModel.newCarPath("optima"), car);
 829             DOMStoreThreePhaseCommitCohort cohort2 = writeTx.ready();
 830
 831             IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", new ShardStatsVerifier() {
 832                 @Override
 833                 public void verify(ShardStats stats) {
 834                     assertEquals("getTxCohortCacheSize", 2, stats.getTxCohortCacheSize());
 835                 }
 836             });
 837
 838             // Gracefully stop the leader via a Shutdown message.
 839
 840             sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder.
 841                 shardElectionTimeoutFactor(100));
 842
 843             FiniteDuration duration = FiniteDuration.create(5, TimeUnit.SECONDS);
 844             Future<ActorRef> future = leaderDistributedDataStore.getActorContext().findLocalShardAsync("cars");
 845             ActorRef leaderActor = Await.result(future, duration);
 846
 847             Future<Boolean> stopFuture = Patterns.gracefulStop(leaderActor, duration, Shutdown.INSTANCE);
 848
 849             // Commit the 2 transactions. They should finish and succeed.
 850
 851             followerTestKit.doCommit(cohort1);
 852             followerTestKit.doCommit(cohort2);
 853
 854             // Wait for the leader actor stopped.
 855
 856             Boolean stopped = Await.result(stopFuture, duration);
 857             assertEquals("Stopped", Boolean.TRUE, stopped);
 858
 859             // Verify leadership was transferred by reading the committed data from the other nodes.
 860
 861             verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car);
 862             verifyCars(follower2DistributedDataStore.newReadOnlyTransaction(), car);
 863         }
 864     }
 865
 866     @Test
 867     public void testTransactionWithIsolatedLeader() throws Throwable {
 868         leaderDatastoreContextBuilder.shardIsolatedLeaderCheckIntervalInMillis(200);
 869         String testName = "testTransactionWithIsolatedLeader";
 870         initDatastoresWithCars(testName);
 871
 872         DOMStoreWriteTransaction failWriteTx = leaderDistributedDataStore.newWriteOnlyTransaction();
 873         failWriteTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 874
 875         DOMStoreWriteTransaction successWriteTx = leaderDistributedDataStore.newWriteOnlyTransaction();
 876         successWriteTx.merge(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 877
 878         followerTestKit.watch(followerDistributedDataStore.getActorContext().getShardManager());
 879         followerDistributedDataStore.close();
 880         followerTestKit.expectTerminated(followerDistributedDataStore.getActorContext().getShardManager());
 881
 882         MemberNode.verifyRaftState(leaderDistributedDataStore, "cars", new RaftStateVerifier() {
 883             @Override
 884             public void verify(OnDemandRaftState raftState) {
 885                 assertEquals("getRaftState", "IsolatedLeader", raftState.getRaftState());
 886             }
 887         });
 888
 889         try {
 890             leaderTestKit.doCommit(failWriteTx.ready());
 891             fail("Expected NoShardLeaderException");
 892         } catch (ExecutionException e) {
 893             assertEquals("getCause", NoShardLeaderException.class, e.getCause().getClass());
 894         }
 895
 896         sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder.
 897                 shardElectionTimeoutFactor(100));
 898
 899         DOMStoreThreePhaseCommitCohort writeTxCohort = successWriteTx.ready();
 900
 901         followerDistributedDataStore = followerTestKit.setupDistributedDataStore(testName,
 902                 MODULE_SHARDS_CARS_ONLY_1_2, false, CARS);
 903
 904         leaderTestKit.doCommit(writeTxCohort);
 905     }
 906
 907     @Test(expected=AskTimeoutException.class)
 908     public void testTransactionWithShardLeaderNotResponding() throws Throwable {
 909         initDatastoresWithCars("testTransactionWithShardLeaderNotResponding");
 910
 911         // Do an initial read to get the primary shard info cached.
 912
 913         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 914         readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS);
 915
 916         // Shutdown the leader and try to create a new tx.
 917
 918         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 919
 920         followerDatastoreContextBuilder.operationTimeoutInMillis(50).shardElectionTimeoutFactor(1);
 921         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder);
 922
 923         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 924
 925         rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 926
 927         try {
 928             followerTestKit.doCommit(rwTx.ready());
 929         } catch (ExecutionException e) {
 930             assertTrue("Expected ShardLeaderNotRespondingException cause. Actual: " + e.getCause(),
 931                     e.getCause() instanceof ShardLeaderNotRespondingException);
 932             assertNotNull("Expected a nested cause", e.getCause().getCause());
 933             throw e.getCause().getCause();
 934         }
 935     }
 936
 937     @Test(expected=NoShardLeaderException.class)
 938     public void testTransactionWithCreateTxFailureDueToNoLeader() throws Throwable {
 939         initDatastoresWithCars("testTransactionWithCreateTxFailureDueToNoLeader");
 940
 941         // Do an initial read to get the primary shard info cached.
 942
 943         DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 944         readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS);
 945
 946         // Shutdown the leader and try to create a new tx.
 947
 948         JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 949
 950         Uninterruptibles.sleepUninterruptibly(100, TimeUnit.MILLISECONDS);
 951
 952         sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder.
 953                 operationTimeoutInMillis(10).shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null));
 954
 955         DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 956
 957         rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 958
 959         try {
 960             followerTestKit.doCommit(rwTx.ready());
 961         } catch (ExecutionException e) {
 962             throw e.getCause();
 963         }
 964     }
 965
 966     @Test
 967     public void testTransactionRetryWithInitialAskTimeoutExOnCreateTx() throws Exception {
 968         String testName = "testTransactionRetryWithInitialAskTimeoutExOnCreateTx";
 969         initDatastores(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, CARS);
 970
 971         DatastoreContext.Builder follower2DatastoreContextBuilder = DatastoreContext.newBuilder().
 972                 shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5);
 973         IntegrationTestKit follower2TestKit = new IntegrationTestKit(follower2System, follower2DatastoreContextBuilder);
 974
 975         try (DistributedDataStore ds =
 976                 follower2TestKit.setupDistributedDataStore(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, false, CARS)) {
 977
 978             followerTestKit.waitForMembersUp("member-1", "member-3");
 979             follower2TestKit.waitForMembersUp("member-1", "member-2");
 980
 981             // Do an initial read to get the primary shard info cached.
 982
 983             DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction();
 984             readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS);
 985
 986             // Shutdown the leader and try to create a new tx.
 987
 988             JavaTestKit.shutdownActorSystem(leaderSystem, null, true);
 989
 990             sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder.
 991                 operationTimeoutInMillis(500).shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null));
 992
 993             DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction();
 994
 995             rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer());
 996
 997             followerTestKit.doCommit(rwTx.ready());
 998         }
 999     }
1000
1001     private static void sendDatastoreContextUpdate(DistributedDataStore dataStore, final Builder builder) {
1002         final Builder newBuilder = DatastoreContext.newBuilderFrom(builder.build());
1003         DatastoreContextFactory mockContextFactory = Mockito.mock(DatastoreContextFactory.class);
1004         Answer<DatastoreContext> answer = new Answer<DatastoreContext>() {
1005             @Override
1006             public DatastoreContext answer(InvocationOnMock invocation) {
1007                 return newBuilder.build();
1008             }
1009         };
1010         Mockito.doAnswer(answer).when(mockContextFactory).getBaseDatastoreContext();
1011         Mockito.doAnswer(answer).when(mockContextFactory).getShardDatastoreContext(Mockito.anyString());
1012         dataStore.onDatastoreContextUpdated(mockContextFactory);
1013     }
1014 }