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