X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Ftest%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FDistributedDataStoreRemotingIntegrationTest.java;h=3b14705613fe00c49604d308b76c9bde983b6552;hp=672d8f3b9997cc866d8320c11da3a7d55aa61e49;hb=c1336f9b497bc6867536a24f629c3f0b002ccb2f;hpb=340a2d4c979ac6f8d5adff8bd9e1c9f724e7a164 diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/DistributedDataStoreRemotingIntegrationTest.java b/opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/DistributedDataStoreRemotingIntegrationTest.java index 672d8f3b99..3b14705613 100644 --- a/opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/DistributedDataStoreRemotingIntegrationTest.java +++ b/opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/DistributedDataStoreRemotingIntegrationTest.java @@ -9,33 +9,62 @@ package org.opendaylight.controller.cluster.datastore; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertNotNull; +import static org.junit.Assert.assertTrue; import static org.junit.Assert.fail; import static org.mockito.Matchers.any; import static org.mockito.Matchers.eq; import static org.mockito.Mockito.timeout; import static org.mockito.Mockito.verify; + import akka.actor.ActorRef; +import akka.actor.ActorSelection; import akka.actor.ActorSystem; import akka.actor.Address; import akka.actor.AddressFromURIString; import akka.cluster.Cluster; +import akka.dispatch.Futures; +import akka.pattern.AskTimeoutException; +import akka.pattern.Patterns; import akka.testkit.JavaTestKit; import com.google.common.base.Optional; +import com.google.common.base.Supplier; +import com.google.common.base.Throwables; import com.google.common.collect.ImmutableMap; +import com.google.common.util.concurrent.ListenableFuture; import com.google.common.util.concurrent.MoreExecutors; +import com.google.common.util.concurrent.Uninterruptibles; import com.typesafe.config.ConfigFactory; import java.math.BigInteger; +import java.util.Arrays; +import java.util.Collections; +import java.util.LinkedList; +import java.util.concurrent.ExecutionException; import java.util.concurrent.TimeUnit; import org.junit.After; import org.junit.Before; import org.junit.Test; import org.mockito.Mockito; +import org.mockito.stubbing.Answer; +import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier; +import org.opendaylight.controller.cluster.databroker.ConcurrentDOMDataBroker; +import org.opendaylight.controller.cluster.datastore.DatastoreContext.Builder; +import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException; +import org.opendaylight.controller.cluster.datastore.exceptions.ShardLeaderNotRespondingException; import org.opendaylight.controller.cluster.datastore.messages.CommitTransactionReply; +import org.opendaylight.controller.cluster.datastore.messages.ForwardedReadyTransaction; +import org.opendaylight.controller.cluster.datastore.messages.GetShardDataTree; import org.opendaylight.controller.cluster.datastore.messages.ReadyLocalTransaction; +import org.opendaylight.controller.cluster.datastore.messages.ReadyTransactionReply; import org.opendaylight.controller.cluster.datastore.modification.MergeModification; import org.opendaylight.controller.cluster.datastore.modification.WriteModification; -import org.opendaylight.controller.cluster.raft.base.messages.ApplyJournalEntries; +import org.opendaylight.controller.cluster.datastore.persisted.MetadataShardDataTreeSnapshot; +import org.opendaylight.controller.cluster.datastore.persisted.ShardSnapshotState; +import org.opendaylight.controller.cluster.raft.client.messages.Shutdown; +import org.opendaylight.controller.cluster.raft.persisted.ApplyJournalEntries; +import org.opendaylight.controller.cluster.raft.persisted.Snapshot; +import org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy; import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal; +import org.opendaylight.controller.cluster.raft.utils.InMemorySnapshotStore; import org.opendaylight.controller.md.cluster.datastore.model.CarsModel; import org.opendaylight.controller.md.cluster.datastore.model.PeopleModel; import org.opendaylight.controller.md.cluster.datastore.model.SchemaContextHelper; @@ -56,87 +85,129 @@ import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode; import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode; import org.opendaylight.yangtools.yang.data.api.schema.MapNode; import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree; import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification; import org.opendaylight.yangtools.yang.data.api.schema.tree.TipProducingDataTree; +import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType; import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes; import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder; import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableContainerNodeBuilder; import org.opendaylight.yangtools.yang.data.impl.schema.tree.InMemoryDataTreeFactory; +import scala.concurrent.Await; +import scala.concurrent.Future; +import scala.concurrent.duration.FiniteDuration; /** * End-to-end distributed data store tests that exercise remote shards and transactions. * * @author Thomas Pantelis */ -public class DistributedDataStoreRemotingIntegrationTest { +public class DistributedDataStoreRemotingIntegrationTest extends AbstractTest { - private static final String[] SHARD_NAMES = {"cars", "people"}; + private static final String[] CARS_AND_PEOPLE = {"cars", "people"}; + private static final String[] CARS = {"cars"}; - private static final Address MEMBER_1_ADDRESS = AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"); - private static final Address MEMBER_2_ADDRESS = AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2559"); + private static final Address MEMBER_1_ADDRESS = AddressFromURIString.parse( + "akka://cluster-test@127.0.0.1:2558"); + private static final Address MEMBER_2_ADDRESS = AddressFromURIString.parse( + "akka://cluster-test@127.0.0.1:2559"); - private static final String MODULE_SHARDS_CONFIG = "module-shards-member1-and-2.conf"; + private static final String MODULE_SHARDS_CARS_ONLY_1_2 = "module-shards-cars-member-1-and-2.conf"; + private static final String MODULE_SHARDS_CARS_PEOPLE_1_2 = "module-shards-member1-and-2.conf"; + private static final String MODULE_SHARDS_CARS_PEOPLE_1_2_3 = "module-shards-member1-and-2-and-3.conf"; private ActorSystem leaderSystem; private ActorSystem followerSystem; + private ActorSystem follower2System; private final DatastoreContext.Builder leaderDatastoreContextBuilder = - DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(1); + DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(2); private final DatastoreContext.Builder followerDatastoreContextBuilder = - DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5); + DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5) + .customRaftPolicyImplementation(DisableElectionsRaftPolicy.class.getName()); + private final TransactionIdentifier tx1 = nextTransactionId(); + private final TransactionIdentifier tx2 = nextTransactionId(); - private DistributedDataStore followerDistributedDataStore; - private DistributedDataStore leaderDistributedDataStore; + private AbstractDataStore followerDistributedDataStore; + private AbstractDataStore leaderDistributedDataStore; private IntegrationTestKit followerTestKit; private IntegrationTestKit leaderTestKit; @Before - public void setUpClass() { + public void setUp() { + InMemoryJournal.clear(); + InMemorySnapshotStore.clear(); + leaderSystem = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1")); Cluster.get(leaderSystem).join(MEMBER_1_ADDRESS); followerSystem = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member2")); Cluster.get(followerSystem).join(MEMBER_1_ADDRESS); + + follower2System = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member3")); + Cluster.get(follower2System).join(MEMBER_1_ADDRESS); } @After - public void tearDownClass() { + public void tearDown() { + if (followerDistributedDataStore != null) { + leaderDistributedDataStore.close(); + } + if (leaderDistributedDataStore != null) { + leaderDistributedDataStore.close(); + } + JavaTestKit.shutdownActorSystem(leaderSystem); JavaTestKit.shutdownActorSystem(followerSystem); + JavaTestKit.shutdownActorSystem(follower2System); + + InMemoryJournal.clear(); + InMemorySnapshotStore.clear(); } - private void initDatastores(String type) { + private void initDatastoresWithCars(final String type) { + initDatastores(type, MODULE_SHARDS_CARS_ONLY_1_2, CARS); + } + + private void initDatastoresWithCarsAndPeople(final String type) { + initDatastores(type, MODULE_SHARDS_CARS_PEOPLE_1_2, CARS_AND_PEOPLE); + } + + private void initDatastores(final String type, final String moduleShardsConfig, final String[] shards) { leaderTestKit = new IntegrationTestKit(leaderSystem, leaderDatastoreContextBuilder); - followerTestKit = new IntegrationTestKit(followerSystem, followerDatastoreContextBuilder); - followerDistributedDataStore = followerTestKit.setupDistributedDataStore(type, MODULE_SHARDS_CONFIG, false, SHARD_NAMES); + leaderDistributedDataStore = leaderTestKit.setupDistributedDataStore(type, moduleShardsConfig, false, shards); - leaderDistributedDataStore = leaderTestKit.setupDistributedDataStore(type, MODULE_SHARDS_CONFIG, false, SHARD_NAMES); + followerTestKit = new IntegrationTestKit(followerSystem, followerDatastoreContextBuilder); + followerDistributedDataStore = followerTestKit.setupDistributedDataStore(type, moduleShardsConfig, false, + shards); - leaderTestKit.waitUntilLeader(leaderDistributedDataStore.getActorContext(), SHARD_NAMES); + leaderTestKit.waitUntilLeader(leaderDistributedDataStore.getActorContext(), shards); } - private void verifyCars(DOMStoreReadTransaction readTx, MapEntryNode... entries) throws Exception { + private static void verifyCars(final DOMStoreReadTransaction readTx, final MapEntryNode... entries) + throws Exception { Optional> optional = readTx.read(CarsModel.CAR_LIST_PATH).get(5, TimeUnit.SECONDS); assertEquals("isPresent", true, optional.isPresent()); CollectionNodeBuilder listBuilder = ImmutableNodes.mapNodeBuilder(CarsModel.CAR_QNAME); - for(NormalizedNode entry: entries) { + for (NormalizedNode entry: entries) { listBuilder.withChild((MapEntryNode) entry); } assertEquals("Car list node", listBuilder.build(), optional.get()); } - private void verifyNode(DOMStoreReadTransaction readTx, YangInstanceIdentifier path, NormalizedNode expNode) - throws Exception { + private static void verifyNode(final DOMStoreReadTransaction readTx, final YangInstanceIdentifier path, + final NormalizedNode expNode) throws Exception { Optional> optional = readTx.read(path).get(5, TimeUnit.SECONDS); assertEquals("isPresent", true, optional.isPresent()); assertEquals("Data node", expNode, optional.get()); } - private void verifyExists(DOMStoreReadTransaction readTx, YangInstanceIdentifier path) throws Exception { + private static void verifyExists(final DOMStoreReadTransaction readTx, final YangInstanceIdentifier path) + throws Exception { Boolean exists = readTx.exists(path).get(5, TimeUnit.SECONDS); assertEquals("exists", true, exists); } @@ -144,10 +215,10 @@ public class DistributedDataStoreRemotingIntegrationTest { @Test public void testWriteTransactionWithSingleShard() throws Exception { String testName = "testWriteTransactionWithSingleShard"; - initDatastores(testName); + initDatastoresWithCars(testName); String followerCarShardName = "member-2-shard-cars-" + testName; - InMemoryJournal.addWriteMessagesCompleteLatch(followerCarShardName, 2, ApplyJournalEntries.class ); + InMemoryJournal.addWriteMessagesCompleteLatch(followerCarShardName, 2, ApplyJournalEntries.class); DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction(); assertNotNull("newWriteOnlyTransaction returned null", writeTx); @@ -192,17 +263,17 @@ public class DistributedDataStoreRemotingIntegrationTest { ActorSystem newSystem = ActorSystem.create("reinstated-member2", ConfigFactory.load().getConfig("Member2")); - DistributedDataStore member2Datastore = new IntegrationTestKit(newSystem, leaderDatastoreContextBuilder). - setupDistributedDataStore(testName, "module-shards-member2", true, SHARD_NAMES); - - verifyCars(member2Datastore.newReadOnlyTransaction(), car2); + try (AbstractDataStore member2Datastore = new IntegrationTestKit(newSystem, leaderDatastoreContextBuilder) + .setupDistributedDataStore(testName, "module-shards-member2", true, CARS_AND_PEOPLE)) { + verifyCars(member2Datastore.newReadOnlyTransaction(), car2); + } JavaTestKit.shutdownActorSystem(newSystem); } @Test public void testReadWriteTransactionWithSingleShard() throws Exception { - initDatastores("testReadWriteTransactionWithSingleShard"); + initDatastoresWithCars("testReadWriteTransactionWithSingleShard"); DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction(); assertNotNull("newReadWriteTransaction returned null", rwTx); @@ -228,7 +299,7 @@ public class DistributedDataStoreRemotingIntegrationTest { @Test public void testWriteTransactionWithMultipleShards() throws Exception { - initDatastores("testWriteTransactionWithMultipleShards"); + initDatastoresWithCarsAndPeople("testWriteTransactionWithMultipleShards"); DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction(); assertNotNull("newWriteOnlyTransaction returned null", writeTx); @@ -251,7 +322,7 @@ public class DistributedDataStoreRemotingIntegrationTest { @Test public void testReadWriteTransactionWithMultipleShards() throws Exception { - initDatastores("testReadWriteTransactionWithMultipleShards"); + initDatastoresWithCarsAndPeople("testReadWriteTransactionWithMultipleShards"); DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction(); assertNotNull("newReadWriteTransaction returned null", rwTx); @@ -274,7 +345,7 @@ public class DistributedDataStoreRemotingIntegrationTest { @Test public void testTransactionChainWithSingleShard() throws Exception { - initDatastores("testTransactionChainWithSingleShard"); + initDatastoresWithCars("testTransactionChainWithSingleShard"); DOMStoreTransactionChain txChain = followerDistributedDataStore.createTransactionChain(); @@ -320,8 +391,8 @@ public class DistributedDataStoreRemotingIntegrationTest { } @Test - public void testTransactionChainWithMultipleShards() throws Exception{ - initDatastores("testTransactionChainWithMultipleShards"); + public void testTransactionChainWithMultipleShards() throws Exception { + initDatastoresWithCarsAndPeople("testTransactionChainWithMultipleShards"); DOMStoreTransactionChain txChain = followerDistributedDataStore.createTransactionChain(); @@ -376,7 +447,7 @@ public class DistributedDataStoreRemotingIntegrationTest { @Test public void testChainedTransactionFailureWithSingleShard() throws Exception { - initDatastores("testChainedTransactionFailureWithSingleShard"); + initDatastoresWithCars("testChainedTransactionFailureWithSingleShard"); ConcurrentDOMDataBroker broker = new ConcurrentDOMDataBroker( ImmutableMap.builder().put( @@ -389,8 +460,8 @@ public class DistributedDataStoreRemotingIntegrationTest { DOMDataWriteTransaction writeTx = txChain.newWriteOnlyTransaction(); ContainerNode invalidData = ImmutableContainerNodeBuilder.create().withNodeIdentifier( - new YangInstanceIdentifier.NodeIdentifier(CarsModel.BASE_QNAME)). - withChild(ImmutableNodes.leafNode(TestModel.JUNK_QNAME, "junk")).build(); + new YangInstanceIdentifier.NodeIdentifier(CarsModel.BASE_QNAME)) + .withChild(ImmutableNodes.leafNode(TestModel.JUNK_QNAME, "junk")).build(); writeTx.merge(LogicalDatastoreType.CONFIGURATION, CarsModel.BASE_PATH, invalidData); @@ -409,7 +480,7 @@ public class DistributedDataStoreRemotingIntegrationTest { @Test public void testChainedTransactionFailureWithMultipleShards() throws Exception { - initDatastores("testChainedTransactionFailureWithMultipleShards"); + initDatastoresWithCarsAndPeople("testChainedTransactionFailureWithMultipleShards"); ConcurrentDOMDataBroker broker = new ConcurrentDOMDataBroker( ImmutableMap.builder().put( @@ -424,8 +495,8 @@ public class DistributedDataStoreRemotingIntegrationTest { writeTx.put(LogicalDatastoreType.CONFIGURATION, PeopleModel.BASE_PATH, PeopleModel.emptyContainer()); ContainerNode invalidData = ImmutableContainerNodeBuilder.create().withNodeIdentifier( - new YangInstanceIdentifier.NodeIdentifier(CarsModel.BASE_QNAME)). - withChild(ImmutableNodes.leafNode(TestModel.JUNK_QNAME, "junk")).build(); + new YangInstanceIdentifier.NodeIdentifier(CarsModel.BASE_QNAME)) + .withChild(ImmutableNodes.leafNode(TestModel.JUNK_QNAME, "junk")).build(); // Note that merge will validate the data and fail but put succeeds b/c deep validation is not // done for put for performance reasons. @@ -447,10 +518,10 @@ public class DistributedDataStoreRemotingIntegrationTest { @Test public void testSingleShardTransactionsWithLeaderChanges() throws Exception { String testName = "testSingleShardTransactionsWithLeaderChanges"; - initDatastores(testName); + initDatastoresWithCars(testName); String followerCarShardName = "member-2-shard-cars-" + testName; - InMemoryJournal.addWriteMessagesCompleteLatch(followerCarShardName, 1, ApplyJournalEntries.class ); + InMemoryJournal.addWriteMessagesCompleteLatch(followerCarShardName, 1, ApplyJournalEntries.class); // Write top-level car container from the follower so it uses a remote Tx. @@ -465,60 +536,549 @@ public class DistributedDataStoreRemotingIntegrationTest { // Switch the leader to the follower - followerDatastoreContextBuilder.shardElectionTimeoutFactor(1); - followerDistributedDataStore.onDatastoreContextUpdated(followerDatastoreContextBuilder.build()); + sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder + .shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null)); JavaTestKit.shutdownActorSystem(leaderSystem, null, true); + Cluster.get(followerSystem).leave(MEMBER_1_ADDRESS); - followerTestKit.waitUntilNoLeader(followerDistributedDataStore.getActorContext(), SHARD_NAMES); + followerTestKit.waitUntilNoLeader(followerDistributedDataStore.getActorContext(), CARS); leaderSystem = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1")); Cluster.get(leaderSystem).join(MEMBER_2_ADDRESS); - DatastoreContext.Builder newMember1Builder = DatastoreContext.newBuilder(). - shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5); + DatastoreContext.Builder newMember1Builder = DatastoreContext.newBuilder() + .shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5); IntegrationTestKit newMember1TestKit = new IntegrationTestKit(leaderSystem, newMember1Builder); - DistributedDataStore newMember1Datastore = newMember1TestKit. - setupDistributedDataStore(testName, MODULE_SHARDS_CONFIG, false, SHARD_NAMES); - followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), SHARD_NAMES); + try (AbstractDataStore ds = + newMember1TestKit.setupDistributedDataStore(testName, MODULE_SHARDS_CARS_ONLY_1_2, false, CARS)) { - // Write a car entry to the new leader - should switch to local Tx + followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), CARS); - writeTx = followerDistributedDataStore.newWriteOnlyTransaction(); + // Write a car entry to the new leader - should switch to local Tx - MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000)); - YangInstanceIdentifier car1Path = CarsModel.newCarPath("optima"); - writeTx.merge(car1Path, car1); + writeTx = followerDistributedDataStore.newWriteOnlyTransaction(); - followerTestKit.doCommit(writeTx.ready()); + MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000)); + YangInstanceIdentifier car1Path = CarsModel.newCarPath("optima"); + writeTx.merge(car1Path, car1); + + followerTestKit.doCommit(writeTx.ready()); - verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car1); + verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car1); + } } + @SuppressWarnings("unchecked") @Test public void testReadyLocalTransactionForwardedToLeader() throws Exception { - initDatastores("testReadyLocalTransactionForwardedToLeader"); + initDatastoresWithCars("testReadyLocalTransactionForwardedToLeader"); + followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), "cars"); Optional carsFollowerShard = followerDistributedDataStore.getActorContext().findLocalShard("cars"); assertEquals("Cars follower shard found", true, carsFollowerShard.isPresent()); - TipProducingDataTree dataTree = InMemoryDataTreeFactory.getInstance().create(); + TipProducingDataTree dataTree = InMemoryDataTreeFactory.getInstance().create(TreeType.OPERATIONAL); dataTree.setSchemaContext(SchemaContextHelper.full()); - DataTreeModification modification = dataTree.takeSnapshot().newModification(); + // Send a tx with immediate commit. + + DataTreeModification modification = dataTree.takeSnapshot().newModification(); new WriteModification(CarsModel.BASE_PATH, CarsModel.emptyContainer()).apply(modification); new MergeModification(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()).apply(modification); - MapEntryNode car = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000)); - new WriteModification(CarsModel.newCarPath("optima"), car).apply(modification); + MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000)); + new WriteModification(CarsModel.newCarPath("optima"), car1).apply(modification); + modification.ready(); + + ReadyLocalTransaction readyLocal = new ReadyLocalTransaction(tx1 , modification, true); + + carsFollowerShard.get().tell(readyLocal, followerTestKit.getRef()); + Object resp = followerTestKit.expectMsgClass(Object.class); + if (resp instanceof akka.actor.Status.Failure) { + throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause()); + } + + assertEquals("Response type", CommitTransactionReply.class, resp.getClass()); + + verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1); + + // Send another tx without immediate commit. - String transactionID = "tx-1"; - ReadyLocalTransaction readyLocal = new ReadyLocalTransaction(transactionID , modification, true); + modification = dataTree.takeSnapshot().newModification(); + MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(30000)); + new WriteModification(CarsModel.newCarPath("sportage"), car2).apply(modification); + modification.ready(); + + readyLocal = new ReadyLocalTransaction(tx2 , modification, false); carsFollowerShard.get().tell(readyLocal, followerTestKit.getRef()); - followerTestKit.expectMsgClass(CommitTransactionReply.SERIALIZABLE_CLASS); + resp = followerTestKit.expectMsgClass(Object.class); + if (resp instanceof akka.actor.Status.Failure) { + throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause()); + } + + assertEquals("Response type", ReadyTransactionReply.class, resp.getClass()); + + ActorSelection txActor = leaderDistributedDataStore.getActorContext().actorSelection( + ((ReadyTransactionReply)resp).getCohortPath()); + + Supplier versionSupplier = Mockito.mock(Supplier.class); + Mockito.doReturn(DataStoreVersions.CURRENT_VERSION).when(versionSupplier).get(); + ThreePhaseCommitCohortProxy cohort = new ThreePhaseCommitCohortProxy( + leaderDistributedDataStore.getActorContext(), Arrays.asList( + new ThreePhaseCommitCohortProxy.CohortInfo(Futures.successful(txActor), versionSupplier)), tx2); + cohort.canCommit().get(5, TimeUnit.SECONDS); + cohort.preCommit().get(5, TimeUnit.SECONDS); + cohort.commit().get(5, TimeUnit.SECONDS); + + verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1, car2); + } + + @SuppressWarnings("unchecked") + @Test + public void testForwardedReadyTransactionForwardedToLeader() throws Exception { + initDatastoresWithCars("testForwardedReadyTransactionForwardedToLeader"); + followerTestKit.waitUntilLeader(followerDistributedDataStore.getActorContext(), "cars"); + + Optional carsFollowerShard = followerDistributedDataStore.getActorContext().findLocalShard("cars"); + assertEquals("Cars follower shard found", true, carsFollowerShard.isPresent()); + + carsFollowerShard.get().tell(GetShardDataTree.INSTANCE, followerTestKit.getRef()); + DataTree dataTree = followerTestKit.expectMsgClass(DataTree.class); + + // Send a tx with immediate commit. + + DataTreeModification modification = dataTree.takeSnapshot().newModification(); + new WriteModification(CarsModel.BASE_PATH, CarsModel.emptyContainer()).apply(modification); + new MergeModification(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()).apply(modification); + + MapEntryNode car1 = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000)); + new WriteModification(CarsModel.newCarPath("optima"), car1).apply(modification); + + ForwardedReadyTransaction forwardedReady = new ForwardedReadyTransaction(tx1, + DataStoreVersions.CURRENT_VERSION, new ReadWriteShardDataTreeTransaction( + Mockito.mock(ShardDataTreeTransactionParent.class), tx1, modification), true); + + carsFollowerShard.get().tell(forwardedReady, followerTestKit.getRef()); + Object resp = followerTestKit.expectMsgClass(Object.class); + if (resp instanceof akka.actor.Status.Failure) { + throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause()); + } + + assertEquals("Response type", CommitTransactionReply.class, resp.getClass()); + + verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1); + + // Send another tx without immediate commit. + + modification = dataTree.takeSnapshot().newModification(); + MapEntryNode car2 = CarsModel.newCarEntry("sportage", BigInteger.valueOf(30000)); + new WriteModification(CarsModel.newCarPath("sportage"), car2).apply(modification); + + forwardedReady = new ForwardedReadyTransaction(tx2, + DataStoreVersions.CURRENT_VERSION, new ReadWriteShardDataTreeTransaction( + Mockito.mock(ShardDataTreeTransactionParent.class), tx2, modification), false); + + carsFollowerShard.get().tell(forwardedReady, followerTestKit.getRef()); + resp = followerTestKit.expectMsgClass(Object.class); + if (resp instanceof akka.actor.Status.Failure) { + throw new AssertionError("Unexpected failure response", ((akka.actor.Status.Failure)resp).cause()); + } + + assertEquals("Response type", ReadyTransactionReply.class, resp.getClass()); + + ActorSelection txActor = leaderDistributedDataStore.getActorContext().actorSelection( + ((ReadyTransactionReply)resp).getCohortPath()); + + Supplier versionSupplier = Mockito.mock(Supplier.class); + Mockito.doReturn(DataStoreVersions.CURRENT_VERSION).when(versionSupplier).get(); + ThreePhaseCommitCohortProxy cohort = new ThreePhaseCommitCohortProxy( + leaderDistributedDataStore.getActorContext(), Arrays.asList( + new ThreePhaseCommitCohortProxy.CohortInfo(Futures.successful(txActor), versionSupplier)), tx2); + cohort.canCommit().get(5, TimeUnit.SECONDS); + cohort.preCommit().get(5, TimeUnit.SECONDS); + cohort.commit().get(5, TimeUnit.SECONDS); + + verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car1, car2); + } + + @Test + public void testTransactionForwardedToLeaderAfterRetry() throws Exception { + followerDatastoreContextBuilder.shardBatchedModificationCount(2); + leaderDatastoreContextBuilder.shardBatchedModificationCount(2); + initDatastoresWithCarsAndPeople("testTransactionForwardedToLeaderAfterRetry"); + + // Do an initial write to get the primary shard info cached. + + DOMStoreWriteTransaction initialWriteTx = followerDistributedDataStore.newWriteOnlyTransaction(); + initialWriteTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()); + initialWriteTx.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer()); + followerTestKit.doCommit(initialWriteTx.ready()); + + // Wait for the commit to be replicated to the follower. + + MemberNode.verifyRaftState(followerDistributedDataStore, "cars", + raftState -> assertEquals("getLastApplied", 0, raftState.getLastApplied())); + + MemberNode.verifyRaftState(followerDistributedDataStore, "people", + raftState -> assertEquals("getLastApplied", 0, raftState.getLastApplied())); + + // Prepare, ready and canCommit a WO tx that writes to 2 shards. This will become the current tx in + // the leader shard. + + DOMStoreWriteTransaction writeTx1 = followerDistributedDataStore.newWriteOnlyTransaction(); + writeTx1.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()); + writeTx1.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer()); + DOMStoreThreePhaseCommitCohort writeTx1Cohort = writeTx1.ready(); + ListenableFuture writeTx1CanCommit = writeTx1Cohort.canCommit(); + writeTx1CanCommit.get(5, TimeUnit.SECONDS); + + // Prepare and ready another WO tx that writes to 2 shards but don't canCommit yet. This will be queued + // in the leader shard. + + DOMStoreWriteTransaction writeTx2 = followerDistributedDataStore.newWriteOnlyTransaction(); + LinkedList cars = new LinkedList<>(); + int carIndex = 1; + cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex))); + writeTx2.write(CarsModel.newCarPath("car" + carIndex), cars.getLast()); + carIndex++; + NormalizedNode people = PeopleModel.newPersonMapNode(); + writeTx2.write(PeopleModel.PERSON_LIST_PATH, people); + final DOMStoreThreePhaseCommitCohort writeTx2Cohort = writeTx2.ready(); + + // Prepare another WO that writes to a single shard and thus will be directly committed on ready. This + // tx writes 5 cars so 2 BatchedModidifications messages will be sent initially and cached in the + // leader shard (with shardBatchedModificationCount set to 2). The 3rd BatchedModidifications will be + // sent on ready. + + DOMStoreWriteTransaction writeTx3 = followerDistributedDataStore.newWriteOnlyTransaction(); + for (int i = 1; i <= 5; i++, carIndex++) { + cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex))); + writeTx3.write(CarsModel.newCarPath("car" + carIndex), cars.getLast()); + } + + // Prepare another WO that writes to a single shard. This will send a single BatchedModidifications + // message on ready. + + DOMStoreWriteTransaction writeTx4 = followerDistributedDataStore.newWriteOnlyTransaction(); + cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex))); + writeTx4.write(CarsModel.newCarPath("car" + carIndex), cars.getLast()); + carIndex++; + + // Prepare a RW tx that will create a tx actor and send a ForwardedReadyTransaciton message to the + // leader shard on ready. + + DOMStoreReadWriteTransaction readWriteTx = followerDistributedDataStore.newReadWriteTransaction(); + cars.add(CarsModel.newCarEntry("car" + carIndex, BigInteger.valueOf(carIndex))); + readWriteTx.write(CarsModel.newCarPath("car" + carIndex), cars.getLast()); + + IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", + stats -> assertEquals("getReadWriteTransactionCount", 1, stats.getReadWriteTransactionCount())); + + // Disable elections on the leader so it switches to follower. + + sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder + .customRaftPolicyImplementation(DisableElectionsRaftPolicy.class.getName()) + .shardElectionTimeoutFactor(10)); + + Cluster.get(followerSystem).leave(MEMBER_1_ADDRESS); + leaderTestKit.waitUntilNoLeader(leaderDistributedDataStore.getActorContext(), "cars"); + + // Submit all tx's - the messages should get queued for retry. + + ListenableFuture writeTx2CanCommit = writeTx2Cohort.canCommit(); + final DOMStoreThreePhaseCommitCohort writeTx3Cohort = writeTx3.ready(); + final DOMStoreThreePhaseCommitCohort writeTx4Cohort = writeTx4.ready(); + final DOMStoreThreePhaseCommitCohort rwTxCohort = readWriteTx.ready(); + + // Enable elections on the other follower so it becomes the leader, at which point the + // tx's should get forwarded from the previous leader to the new leader to complete the commits. + + sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder + .customRaftPolicyImplementation(null).shardElectionTimeoutFactor(1)); + + followerTestKit.doCommit(writeTx1CanCommit, writeTx1Cohort); + followerTestKit.doCommit(writeTx2CanCommit, writeTx2Cohort); + followerTestKit.doCommit(writeTx3Cohort); + followerTestKit.doCommit(writeTx4Cohort); + followerTestKit.doCommit(rwTxCohort); + + DOMStoreReadTransaction readTx = leaderDistributedDataStore.newReadOnlyTransaction(); + verifyCars(readTx, cars.toArray(new MapEntryNode[cars.size()])); + verifyNode(readTx, PeopleModel.PERSON_LIST_PATH, people); + } + + @Test + public void testLeadershipTransferOnShutdown() throws Exception { + leaderDatastoreContextBuilder.shardBatchedModificationCount(1); + followerDatastoreContextBuilder.shardElectionTimeoutFactor(10).customRaftPolicyImplementation(null); + String testName = "testLeadershipTransferOnShutdown"; + initDatastores(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, CARS_AND_PEOPLE); + + IntegrationTestKit follower2TestKit = new IntegrationTestKit(follower2System, + DatastoreContext.newBuilderFrom(followerDatastoreContextBuilder.build()).operationTimeoutInMillis(100)); + try (AbstractDataStore follower2DistributedDataStore = follower2TestKit.setupDistributedDataStore(testName, + MODULE_SHARDS_CARS_PEOPLE_1_2_3, false)) { + + // Create and submit a couple tx's so they're pending. + + DOMStoreWriteTransaction writeTx = followerDistributedDataStore.newWriteOnlyTransaction(); + writeTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()); + writeTx.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()); + writeTx.write(PeopleModel.BASE_PATH, PeopleModel.emptyContainer()); + final DOMStoreThreePhaseCommitCohort cohort1 = writeTx.ready(); + + IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", + stats -> assertEquals("getTxCohortCacheSize", 1, stats.getTxCohortCacheSize())); + + writeTx = followerDistributedDataStore.newWriteOnlyTransaction(); + MapEntryNode car = CarsModel.newCarEntry("optima", BigInteger.valueOf(20000)); + writeTx.write(CarsModel.newCarPath("optima"), car); + final DOMStoreThreePhaseCommitCohort cohort2 = writeTx.ready(); + + IntegrationTestKit.verifyShardStats(leaderDistributedDataStore, "cars", + stats -> assertEquals("getTxCohortCacheSize", 2, stats.getTxCohortCacheSize())); + + // Gracefully stop the leader via a Shutdown message. + + sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder + .shardElectionTimeoutFactor(100)); + + FiniteDuration duration = FiniteDuration.create(5, TimeUnit.SECONDS); + Future future = leaderDistributedDataStore.getActorContext().findLocalShardAsync("cars"); + ActorRef leaderActor = Await.result(future, duration); + + Future stopFuture = Patterns.gracefulStop(leaderActor, duration, Shutdown.INSTANCE); + + // Commit the 2 transactions. They should finish and succeed. + + followerTestKit.doCommit(cohort1); + followerTestKit.doCommit(cohort2); + + // Wait for the leader actor stopped. + + Boolean stopped = Await.result(stopFuture, duration); + assertEquals("Stopped", Boolean.TRUE, stopped); + + // Verify leadership was transferred by reading the committed data from the other nodes. + + verifyCars(followerDistributedDataStore.newReadOnlyTransaction(), car); + verifyCars(follower2DistributedDataStore.newReadOnlyTransaction(), car); + } + } + + @Test + public void testTransactionWithIsolatedLeader() throws Exception { + // Set the isolated leader check interval high so we can control the switch to IsolatedLeader. + leaderDatastoreContextBuilder.shardIsolatedLeaderCheckIntervalInMillis(10000000); + String testName = "testTransactionWithIsolatedLeader"; + initDatastoresWithCars(testName); + + // Tx that is submitted after the follower is stopped but before the leader transitions to IsolatedLeader. + DOMStoreWriteTransaction preIsolatedLeaderWriteTx = leaderDistributedDataStore.newWriteOnlyTransaction(); + preIsolatedLeaderWriteTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()); + + // Tx that is submitted after the leader transitions to IsolatedLeader. + DOMStoreWriteTransaction noShardLeaderWriteTx = leaderDistributedDataStore.newWriteOnlyTransaction(); + noShardLeaderWriteTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()); + + // Tx that is submitted after the follower is reinstated. + DOMStoreWriteTransaction successWriteTx = leaderDistributedDataStore.newWriteOnlyTransaction(); + successWriteTx.merge(CarsModel.BASE_PATH, CarsModel.emptyContainer()); + + // Stop the follower + followerTestKit.watch(followerDistributedDataStore.getActorContext().getShardManager()); + followerDistributedDataStore.close(); + followerTestKit.expectTerminated(followerDistributedDataStore.getActorContext().getShardManager()); + + // Submit the preIsolatedLeaderWriteTx so it's pending + final DOMStoreThreePhaseCommitCohort preIsolatedLeaderTxCohort = preIsolatedLeaderWriteTx.ready(); + + // Change the isolated leader check interval low so it changes to IsolatedLeader. + sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder + .shardIsolatedLeaderCheckIntervalInMillis(200)); + + MemberNode.verifyRaftState(leaderDistributedDataStore, "cars", + raftState -> assertEquals("getRaftState", "IsolatedLeader", raftState.getRaftState())); + + try { + leaderTestKit.doCommit(noShardLeaderWriteTx.ready()); + fail("Expected NoShardLeaderException"); + } catch (ExecutionException e) { + assertEquals("getCause", NoShardLeaderException.class, e.getCause().getClass()); + } + + sendDatastoreContextUpdate(leaderDistributedDataStore, leaderDatastoreContextBuilder + .shardElectionTimeoutFactor(100)); + + DOMStoreThreePhaseCommitCohort successTxCohort = successWriteTx.ready(); + + followerDistributedDataStore = followerTestKit.setupDistributedDataStore(testName, + MODULE_SHARDS_CARS_ONLY_1_2, false, CARS); + + leaderTestKit.doCommit(preIsolatedLeaderTxCohort); + leaderTestKit.doCommit(successTxCohort); + } + + @Test(expected = AskTimeoutException.class) + public void testTransactionWithShardLeaderNotResponding() throws Exception { + followerDatastoreContextBuilder.shardElectionTimeoutFactor(50); + initDatastoresWithCars("testTransactionWithShardLeaderNotResponding"); + + // Do an initial read to get the primary shard info cached. + + DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction(); + readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS); + + // Shutdown the leader and try to create a new tx. + + JavaTestKit.shutdownActorSystem(leaderSystem, null, true); + + followerDatastoreContextBuilder.operationTimeoutInMillis(50).shardElectionTimeoutFactor(1); + sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder); + + DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction(); + + rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()); + + try { + followerTestKit.doCommit(rwTx.ready()); + } catch (ExecutionException e) { + assertTrue("Expected ShardLeaderNotRespondingException cause. Actual: " + e.getCause(), + e.getCause() instanceof ShardLeaderNotRespondingException); + assertNotNull("Expected a nested cause", e.getCause().getCause()); + Throwables.propagateIfInstanceOf(e.getCause().getCause(), Exception.class); + Throwables.propagate(e.getCause().getCause()); + } + } + + @Test(expected = NoShardLeaderException.class) + public void testTransactionWithCreateTxFailureDueToNoLeader() throws Exception { + initDatastoresWithCars("testTransactionWithCreateTxFailureDueToNoLeader"); + + // Do an initial read to get the primary shard info cached. + + DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction(); + readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS); + + // Shutdown the leader and try to create a new tx. + + JavaTestKit.shutdownActorSystem(leaderSystem, null, true); + + Cluster.get(followerSystem).leave(MEMBER_1_ADDRESS); + + Uninterruptibles.sleepUninterruptibly(100, TimeUnit.MILLISECONDS); + + sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder + .operationTimeoutInMillis(10).shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null)); + + DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction(); + + rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()); + + try { + followerTestKit.doCommit(rwTx.ready()); + } catch (ExecutionException e) { + Throwables.propagateIfInstanceOf(e.getCause(), Exception.class); + Throwables.propagate(e.getCause()); + } + } + + @Test + public void testTransactionRetryWithInitialAskTimeoutExOnCreateTx() throws Exception { + String testName = "testTransactionRetryWithInitialAskTimeoutExOnCreateTx"; + initDatastores(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, CARS); + + DatastoreContext.Builder follower2DatastoreContextBuilder = DatastoreContext.newBuilder() + .shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5); + IntegrationTestKit follower2TestKit = new IntegrationTestKit(follower2System, follower2DatastoreContextBuilder); + + try (AbstractDataStore ds = + follower2TestKit.setupDistributedDataStore(testName, MODULE_SHARDS_CARS_PEOPLE_1_2_3, false, CARS)) { + + followerTestKit.waitForMembersUp("member-1", "member-3"); + follower2TestKit.waitForMembersUp("member-1", "member-2"); + + // Do an initial read to get the primary shard info cached. + + DOMStoreReadTransaction readTx = followerDistributedDataStore.newReadOnlyTransaction(); + readTx.read(CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS); + + // Shutdown the leader and try to create a new tx. + + JavaTestKit.shutdownActorSystem(leaderSystem, null, true); + + Cluster.get(followerSystem).leave(MEMBER_1_ADDRESS); + + sendDatastoreContextUpdate(followerDistributedDataStore, followerDatastoreContextBuilder + .operationTimeoutInMillis(500).shardElectionTimeoutFactor(1).customRaftPolicyImplementation(null)); + + DOMStoreReadWriteTransaction rwTx = followerDistributedDataStore.newReadWriteTransaction(); + + rwTx.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()); + + followerTestKit.doCommit(rwTx.ready()); + } + } + + @Test + public void testInstallSnapshot() throws Exception { + final String testName = "testInstallSnapshot"; + final String leaderCarShardName = "member-1-shard-cars-" + testName; + final String followerCarShardName = "member-2-shard-cars-" + testName; + + // Setup a saved snapshot on the leader. The follower will startup with no data and the leader should + // install a snapshot to sync the follower. + + TipProducingDataTree tree = InMemoryDataTreeFactory.getInstance().create(TreeType.CONFIGURATION); + tree.setSchemaContext(SchemaContextHelper.full()); + + ContainerNode carsNode = CarsModel.newCarsNode( + CarsModel.newCarsMapNode(CarsModel.newCarEntry("optima", BigInteger.valueOf(20000)))); + AbstractShardTest.writeToStore(tree, CarsModel.BASE_PATH, carsNode); + + NormalizedNode snapshotRoot = AbstractShardTest.readStore(tree, YangInstanceIdentifier.EMPTY); + Snapshot initialSnapshot = Snapshot.create( + new ShardSnapshotState(new MetadataShardDataTreeSnapshot(snapshotRoot)), + Collections.emptyList(), 5, 1, 5, 1, 1, null, null); + InMemorySnapshotStore.addSnapshot(leaderCarShardName, initialSnapshot); + + InMemorySnapshotStore.addSnapshotSavedLatch(leaderCarShardName); + InMemorySnapshotStore.addSnapshotSavedLatch(followerCarShardName); + + initDatastoresWithCars(testName); + + Optional> readOptional = leaderDistributedDataStore.newReadOnlyTransaction().read( + CarsModel.BASE_PATH).checkedGet(5, TimeUnit.SECONDS); + assertEquals("isPresent", true, readOptional.isPresent()); + assertEquals("Node", carsNode, readOptional.get()); + + verifySnapshot(InMemorySnapshotStore.waitForSavedSnapshot(leaderCarShardName, Snapshot.class), + initialSnapshot, snapshotRoot); + + verifySnapshot(InMemorySnapshotStore.waitForSavedSnapshot(followerCarShardName, Snapshot.class), + initialSnapshot, snapshotRoot); + } + + private static void verifySnapshot(Snapshot actual, Snapshot expected, NormalizedNode expRoot) { + assertEquals("Snapshot getLastAppliedTerm", expected.getLastAppliedTerm(), actual.getLastAppliedTerm()); + assertEquals("Snapshot getLastAppliedIndex", expected.getLastAppliedIndex(), actual.getLastAppliedIndex()); + assertEquals("Snapshot getLastTerm", expected.getLastTerm(), actual.getLastTerm()); + assertEquals("Snapshot getLastIndex", expected.getLastIndex(), actual.getLastIndex()); + assertEquals("Snapshot state type", ShardSnapshotState.class, actual.getState().getClass()); + MetadataShardDataTreeSnapshot shardSnapshot = + (MetadataShardDataTreeSnapshot) ((ShardSnapshotState)actual.getState()).getSnapshot(); + assertEquals("Snapshot root node", expRoot, shardSnapshot.getRootNode().get()); + } - verifyCars(leaderDistributedDataStore.newReadOnlyTransaction(), car); + private static void sendDatastoreContextUpdate(final AbstractDataStore dataStore, final Builder builder) { + final Builder newBuilder = DatastoreContext.newBuilderFrom(builder.build()); + DatastoreContextFactory mockContextFactory = Mockito.mock(DatastoreContextFactory.class); + Answer answer = invocation -> newBuilder.build(); + Mockito.doAnswer(answer).when(mockContextFactory).getBaseDatastoreContext(); + Mockito.doAnswer(answer).when(mockContextFactory).getShardDatastoreContext(Mockito.anyString()); + dataStore.onDatastoreContextUpdated(mockContextFactory); } }