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