Java tutorial
/* * Copyright (c) 2015 Brocade Communications Systems, Inc. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.controller.cluster.datastore.admin; import static org.hamcrest.CoreMatchers.anyOf; import static org.hamcrest.CoreMatchers.containsString; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertNotNull; import static org.junit.Assert.assertNull; import static org.junit.Assert.assertThat; import static org.junit.Assert.assertTrue; import static org.junit.Assert.fail; import static org.opendaylight.controller.cluster.datastore.MemberNode.verifyNoShardPresent; import static org.opendaylight.controller.cluster.datastore.MemberNode.verifyRaftPeersPresent; import static org.opendaylight.controller.cluster.datastore.MemberNode.verifyRaftState; import akka.actor.ActorRef; import akka.actor.PoisonPill; import akka.actor.Status.Success; import akka.cluster.Cluster; import com.google.common.base.Optional; import com.google.common.collect.ImmutableList; import com.google.common.collect.ImmutableMap; import com.google.common.collect.Iterables; import com.google.common.collect.Lists; import com.google.common.collect.Sets; import java.io.File; import java.io.FileInputStream; import java.net.URI; import java.util.AbstractMap.SimpleEntry; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import java.util.concurrent.TimeUnit; import org.apache.commons.lang3.SerializationUtils; import org.junit.After; import org.junit.Before; import org.junit.Test; import org.opendaylight.controller.cluster.access.concepts.MemberName; import org.opendaylight.controller.cluster.datastore.DatastoreContext; import org.opendaylight.controller.cluster.datastore.DistributedDataStore; import org.opendaylight.controller.cluster.datastore.MemberNode; import org.opendaylight.controller.cluster.datastore.MemberNode.RaftStateVerifier; import org.opendaylight.controller.cluster.datastore.Shard; import org.opendaylight.controller.cluster.datastore.config.ModuleShardConfiguration; import org.opendaylight.controller.cluster.datastore.identifiers.ShardIdentifier; import org.opendaylight.controller.cluster.datastore.messages.CreateShard; import org.opendaylight.controller.cluster.datastore.messages.DatastoreSnapshot; import org.opendaylight.controller.cluster.raft.RaftState; import org.opendaylight.controller.cluster.raft.ReplicatedLogImplEntry; import org.opendaylight.controller.cluster.raft.persisted.ServerConfigurationPayload; import org.opendaylight.controller.cluster.raft.persisted.ServerInfo; import org.opendaylight.controller.cluster.raft.base.messages.UpdateElectionTerm; import org.opendaylight.controller.cluster.raft.client.messages.OnDemandRaftState; 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.sal.core.spi.data.DOMStoreThreePhaseCommitCohort; import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.AddReplicasForAllShardsOutput; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.AddShardReplicaInputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.BackupDatastoreInputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.ChangeMemberVotingStatesForAllShardsInputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.ChangeMemberVotingStatesForAllShardsOutput; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.ChangeMemberVotingStatesForShardInputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.DataStoreType; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.FlipMemberVotingStatesForAllShardsOutput; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.RemoveAllShardReplicasInputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.RemoveAllShardReplicasOutput; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.RemoveShardReplicaInputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.member.voting.states.input.MemberVotingStateBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.shard.result.output.ShardResult; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.cluster.admin.rev151013.shard.result.output.ShardResultBuilder; import org.opendaylight.yangtools.yang.common.RpcError; import org.opendaylight.yangtools.yang.common.RpcResult; import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode; /** * Unit tests for ClusterAdminRpcService. * * @author Thomas Pantelis */ public class ClusterAdminRpcServiceTest { private static final MemberName MEMBER_1 = MemberName.forName("member-1"); private static final MemberName MEMBER_2 = MemberName.forName("member-2"); private static final MemberName MEMBER_3 = MemberName.forName("member-3"); private final List<MemberNode> memberNodes = new ArrayList<>(); @Before public void setUp() { InMemoryJournal.clear(); InMemorySnapshotStore.clear(); } @After public void tearDown() { for (MemberNode m : Lists.reverse(memberNodes)) { m.cleanup(); } memberNodes.clear(); } @Test public void testBackupDatastore() throws Exception { MemberNode node = MemberNode.builder(memberNodes).akkaConfig("Member1") .moduleShardsConfig("module-shards-member1.conf").waitForShardLeader("cars", "people") .testName("testBackupDatastore").build(); String fileName = "target/testBackupDatastore"; new File(fileName).delete(); ClusterAdminRpcService service = new ClusterAdminRpcService(node.configDataStore(), node.operDataStore()); RpcResult<Void> rpcResult = service .backupDatastore(new BackupDatastoreInputBuilder().setFilePath(fileName).build()) .get(5, TimeUnit.SECONDS); verifySuccessfulRpcResult(rpcResult); try (FileInputStream fis = new FileInputStream(fileName)) { List<DatastoreSnapshot> snapshots = SerializationUtils.deserialize(fis); assertEquals("DatastoreSnapshot size", 2, snapshots.size()); ImmutableMap<String, DatastoreSnapshot> map = ImmutableMap.of(snapshots.get(0).getType(), snapshots.get(0), snapshots.get(1).getType(), snapshots.get(1)); verifyDatastoreSnapshot(node.configDataStore().getActorContext().getDataStoreName(), map.get(node.configDataStore().getActorContext().getDataStoreName()), "cars", "people"); } finally { new File(fileName).delete(); } // Test failure by killing a shard. node.configDataStore().getActorContext().getShardManager().tell( node.datastoreContextBuilder().shardInitializationTimeout(200, TimeUnit.MILLISECONDS).build(), ActorRef.noSender()); ActorRef carsShardActor = node.configDataStore().getActorContext().findLocalShard("cars").get(); node.kit().watch(carsShardActor); carsShardActor.tell(PoisonPill.getInstance(), ActorRef.noSender()); node.kit().expectTerminated(carsShardActor); rpcResult = service.backupDatastore(new BackupDatastoreInputBuilder().setFilePath(fileName).build()).get(5, TimeUnit.SECONDS); assertEquals("isSuccessful", false, rpcResult.isSuccessful()); assertEquals("getErrors", 1, rpcResult.getErrors().size()); } private static void verifyDatastoreSnapshot(String type, DatastoreSnapshot datastoreSnapshot, String... expShardNames) { assertNotNull("Missing DatastoreSnapshot for type " + type, datastoreSnapshot); Set<String> shardNames = new HashSet<>(); for (DatastoreSnapshot.ShardSnapshot s : datastoreSnapshot.getShardSnapshots()) { shardNames.add(s.getName()); } assertEquals("DatastoreSnapshot shard names", Sets.newHashSet(expShardNames), shardNames); } @Test public void testAddShardReplica() throws Exception { String name = "testAddShardReplica"; String moduleShardsConfig = "module-shards-cars-member-1.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).waitForShardLeader("cars").build(); MemberNode newReplicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.waitForMembersUp("member-2"); doAddShardReplica(newReplicaNode2, "cars", "member-1"); MemberNode newReplicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.waitForMembersUp("member-3"); newReplicaNode2.waitForMembersUp("member-3"); doAddShardReplica(newReplicaNode3, "cars", "member-1", "member-2"); verifyRaftPeersPresent(newReplicaNode2.configDataStore(), "cars", "member-1", "member-3"); verifyRaftPeersPresent(newReplicaNode2.operDataStore(), "cars", "member-1", "member-3"); // Write data to member-2's config datastore and read/verify via member-3 NormalizedNode<?, ?> configCarsNode = writeCarsNodeAndVerify(newReplicaNode2.configDataStore(), newReplicaNode3.configDataStore()); // Write data to member-3's oper datastore and read/verify via member-2 writeCarsNodeAndVerify(newReplicaNode3.operDataStore(), newReplicaNode2.operDataStore()); // Verify all data has been replicated. We expect 3 log entries and thus last applied index of 2 - // 2 ServerConfigurationPayload entries and the transaction payload entry. RaftStateVerifier verifier = new RaftStateVerifier() { @Override public void verify(OnDemandRaftState raftState) { assertEquals("Commit index", 2, raftState.getCommitIndex()); assertEquals("Last applied index", 2, raftState.getLastApplied()); } }; verifyRaftState(leaderNode1.configDataStore(), "cars", verifier); verifyRaftState(leaderNode1.operDataStore(), "cars", verifier); verifyRaftState(newReplicaNode2.configDataStore(), "cars", verifier); verifyRaftState(newReplicaNode2.operDataStore(), "cars", verifier); verifyRaftState(newReplicaNode3.configDataStore(), "cars", verifier); verifyRaftState(newReplicaNode3.operDataStore(), "cars", verifier); // Restart member-3 and verify the cars config shard is re-instated. Cluster.get(leaderNode1.kit().getSystem()) .down(Cluster.get(newReplicaNode3.kit().getSystem()).selfAddress()); newReplicaNode3.cleanup(); newReplicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).createOperDatastore(false).build(); verifyRaftState(newReplicaNode3.configDataStore(), "cars", verifier); readCarsNodeAndVerify(newReplicaNode3.configDataStore(), configCarsNode); } @Test public void testAddShardReplicaFailures() throws Exception { String name = "testAddShardReplicaFailures"; MemberNode memberNode = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig("module-shards-cars-member-1.conf").build(); ClusterAdminRpcService service = new ClusterAdminRpcService(memberNode.configDataStore(), memberNode.operDataStore()); RpcResult<Void> rpcResult = service .addShardReplica(new AddShardReplicaInputBuilder().setDataStoreType(DataStoreType.Config).build()) .get(10, TimeUnit.SECONDS); verifyFailedRpcResult(rpcResult); rpcResult = service.addShardReplica(new AddShardReplicaInputBuilder().setShardName("cars").build()).get(10, TimeUnit.SECONDS); verifyFailedRpcResult(rpcResult); rpcResult = service.addShardReplica(new AddShardReplicaInputBuilder().setShardName("people") .setDataStoreType(DataStoreType.Config).build()).get(10, TimeUnit.SECONDS); verifyFailedRpcResult(rpcResult); } private static NormalizedNode<?, ?> writeCarsNodeAndVerify(DistributedDataStore writeToStore, DistributedDataStore readFromStore) throws Exception { DOMStoreWriteTransaction writeTx = writeToStore.newWriteOnlyTransaction(); NormalizedNode<?, ?> carsNode = CarsModel.create(); writeTx.write(CarsModel.BASE_PATH, carsNode); DOMStoreThreePhaseCommitCohort cohort = writeTx.ready(); Boolean canCommit = cohort.canCommit().get(7, TimeUnit.SECONDS); assertEquals("canCommit", true, canCommit); cohort.preCommit().get(5, TimeUnit.SECONDS); cohort.commit().get(5, TimeUnit.SECONDS); readCarsNodeAndVerify(readFromStore, carsNode); return carsNode; } private static void readCarsNodeAndVerify(DistributedDataStore readFromStore, NormalizedNode<?, ?> expCarsNode) throws Exception { Optional<NormalizedNode<?, ?>> optional = readFromStore.newReadOnlyTransaction().read(CarsModel.BASE_PATH) .get(15, TimeUnit.SECONDS); assertEquals("isPresent", true, optional.isPresent()); assertEquals("Data node", expCarsNode, optional.get()); } private static void doAddShardReplica(MemberNode memberNode, String shardName, String... peerMemberNames) throws Exception { memberNode.waitForMembersUp(peerMemberNames); ClusterAdminRpcService service = new ClusterAdminRpcService(memberNode.configDataStore(), memberNode.operDataStore()); RpcResult<Void> rpcResult = service.addShardReplica(new AddShardReplicaInputBuilder() .setShardName(shardName).setDataStoreType(DataStoreType.Config).build()).get(10, TimeUnit.SECONDS); verifySuccessfulRpcResult(rpcResult); verifyRaftPeersPresent(memberNode.configDataStore(), shardName, peerMemberNames); Optional<ActorRef> optional = memberNode.operDataStore().getActorContext().findLocalShard(shardName); assertEquals("Oper shard present", false, optional.isPresent()); rpcResult = service.addShardReplica(new AddShardReplicaInputBuilder().setShardName(shardName) .setDataStoreType(DataStoreType.Operational).build()).get(10, TimeUnit.SECONDS); verifySuccessfulRpcResult(rpcResult); verifyRaftPeersPresent(memberNode.operDataStore(), shardName, peerMemberNames); } private static <T> T verifySuccessfulRpcResult(RpcResult<T> rpcResult) { if (!rpcResult.isSuccessful()) { if (rpcResult.getErrors().size() > 0) { RpcError error = Iterables.getFirst(rpcResult.getErrors(), null); throw new AssertionError("Rpc failed with error: " + error, error.getCause()); } fail("Rpc failed with no error"); } return rpcResult.getResult(); } private static void verifyFailedRpcResult(RpcResult<Void> rpcResult) { assertEquals("RpcResult", false, rpcResult.isSuccessful()); assertEquals("RpcResult errors size", 1, rpcResult.getErrors().size()); RpcError error = Iterables.getFirst(rpcResult.getErrors(), null); assertNotNull("RpcResult error message null", error.getMessage()); } @Test public void testRemoveShardReplica() throws Exception { String name = "testRemoveShardReplicaLocal"; String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.configDataStore().waitTillReady(); verifyRaftPeersPresent(leaderNode1.configDataStore(), "cars", "member-2", "member-3"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-1", "member-3"); verifyRaftPeersPresent(replicaNode3.configDataStore(), "cars", "member-1", "member-2"); // Invoke RPC service on member-3 to remove it's local shard ClusterAdminRpcService service3 = new ClusterAdminRpcService(replicaNode3.configDataStore(), replicaNode3.operDataStore()); RpcResult<Void> rpcResult = service3 .removeShardReplica(new RemoveShardReplicaInputBuilder().setShardName("cars") .setMemberName("member-3").setDataStoreType(DataStoreType.Config).build()) .get(10, TimeUnit.SECONDS); verifySuccessfulRpcResult(rpcResult); verifyRaftPeersPresent(leaderNode1.configDataStore(), "cars", "member-2"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-1"); verifyNoShardPresent(replicaNode3.configDataStore(), "cars"); // Restart member-2 and verify member-3 isn't present. Cluster.get(leaderNode1.kit().getSystem()).down(Cluster.get(replicaNode2.kit().getSystem()).selfAddress()); replicaNode2.cleanup(); replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-1"); // Invoke RPC service on member-1 to remove member-2 ClusterAdminRpcService service1 = new ClusterAdminRpcService(leaderNode1.configDataStore(), leaderNode1.operDataStore()); rpcResult = service1 .removeShardReplica(new RemoveShardReplicaInputBuilder().setShardName("cars") .setMemberName("member-2").setDataStoreType(DataStoreType.Config).build()) .get(10, TimeUnit.SECONDS); verifySuccessfulRpcResult(rpcResult); verifyRaftPeersPresent(leaderNode1.configDataStore(), "cars"); verifyNoShardPresent(replicaNode2.configDataStore(), "cars"); } @Test public void testRemoveShardLeaderReplica() throws Exception { String name = "testRemoveShardLeaderReplica"; String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.configDataStore().waitTillReady(); verifyRaftPeersPresent(leaderNode1.configDataStore(), "cars", "member-2", "member-3"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-1", "member-3"); verifyRaftPeersPresent(replicaNode3.configDataStore(), "cars", "member-1", "member-2"); replicaNode2.waitForMembersUp("member-1", "member-3"); replicaNode3.waitForMembersUp("member-1", "member-2"); // Invoke RPC service on leader member-1 to remove it's local shard ClusterAdminRpcService service1 = new ClusterAdminRpcService(leaderNode1.configDataStore(), leaderNode1.operDataStore()); RpcResult<Void> rpcResult = service1 .removeShardReplica(new RemoveShardReplicaInputBuilder().setShardName("cars") .setMemberName("member-1").setDataStoreType(DataStoreType.Config).build()) .get(10, TimeUnit.SECONDS); verifySuccessfulRpcResult(rpcResult); verifyRaftState(replicaNode2.configDataStore(), "cars", new RaftStateVerifier() { @Override public void verify(OnDemandRaftState raftState) { assertThat("Leader Id", raftState.getLeader(), anyOf(containsString("member-2"), containsString("member-3"))); } }); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-3"); verifyRaftPeersPresent(replicaNode3.configDataStore(), "cars", "member-2"); verifyNoShardPresent(leaderNode1.configDataStore(), "cars"); } @Test public void testAddReplicasForAllShards() throws Exception { String name = "testAddReplicasForAllShards"; String moduleShardsConfig = "module-shards-member1.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).waitForShardLeader("cars", "people").build(); ModuleShardConfiguration petsModuleConfig = new ModuleShardConfiguration(URI.create("pets-ns"), "pets-module", "pets", null, Arrays.asList(MEMBER_1)); leaderNode1.configDataStore().getActorContext().getShardManager() .tell(new CreateShard(petsModuleConfig, Shard.builder(), null), leaderNode1.kit().getRef()); leaderNode1.kit().expectMsgClass(Success.class); leaderNode1.kit().waitUntilLeader(leaderNode1.configDataStore().getActorContext(), "pets"); MemberNode newReplicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.waitForMembersUp("member-2"); newReplicaNode2.waitForMembersUp("member-1"); newReplicaNode2.configDataStore().getActorContext().getShardManager() .tell(new CreateShard(petsModuleConfig, Shard.builder(), null), newReplicaNode2.kit().getRef()); newReplicaNode2.kit().expectMsgClass(Success.class); newReplicaNode2.operDataStore().getActorContext().getShardManager() .tell(new CreateShard(new ModuleShardConfiguration(URI.create("no-leader-ns"), "no-leader-module", "no-leader", null, Arrays.asList(MEMBER_1)), Shard.builder(), null), newReplicaNode2.kit().getRef()); newReplicaNode2.kit().expectMsgClass(Success.class); ClusterAdminRpcService service = new ClusterAdminRpcService(newReplicaNode2.configDataStore(), newReplicaNode2.operDataStore()); RpcResult<AddReplicasForAllShardsOutput> rpcResult = service.addReplicasForAllShards().get(10, TimeUnit.SECONDS); AddReplicasForAllShardsOutput result = verifySuccessfulRpcResult(rpcResult); verifyShardResults(result.getShardResult(), successShardResult("cars", DataStoreType.Config), successShardResult("people", DataStoreType.Config), successShardResult("pets", DataStoreType.Config), successShardResult("cars", DataStoreType.Operational), successShardResult("people", DataStoreType.Operational), failedShardResult("no-leader", DataStoreType.Operational)); verifyRaftPeersPresent(newReplicaNode2.configDataStore(), "cars", "member-1"); verifyRaftPeersPresent(newReplicaNode2.configDataStore(), "people", "member-1"); verifyRaftPeersPresent(newReplicaNode2.configDataStore(), "pets", "member-1"); verifyRaftPeersPresent(newReplicaNode2.operDataStore(), "cars", "member-1"); verifyRaftPeersPresent(newReplicaNode2.operDataStore(), "people", "member-1"); } @Test public void testRemoveAllShardReplicas() throws Exception { String name = "testRemoveAllShardReplicas"; String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.configDataStore().waitTillReady(); verifyRaftPeersPresent(leaderNode1.configDataStore(), "cars", "member-2", "member-3"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-1", "member-3"); verifyRaftPeersPresent(replicaNode3.configDataStore(), "cars", "member-1", "member-2"); ModuleShardConfiguration petsModuleConfig = new ModuleShardConfiguration(URI.create("pets-ns"), "pets-module", "pets", null, Arrays.asList(MEMBER_1, MEMBER_2, MEMBER_3)); leaderNode1.configDataStore().getActorContext().getShardManager() .tell(new CreateShard(petsModuleConfig, Shard.builder(), null), leaderNode1.kit().getRef()); leaderNode1.kit().expectMsgClass(Success.class); replicaNode2.configDataStore().getActorContext().getShardManager() .tell(new CreateShard(petsModuleConfig, Shard.builder(), null), replicaNode2.kit().getRef()); replicaNode2.kit().expectMsgClass(Success.class); replicaNode3.configDataStore().getActorContext().getShardManager() .tell(new CreateShard(petsModuleConfig, Shard.builder(), null), replicaNode3.kit().getRef()); replicaNode3.kit().expectMsgClass(Success.class); verifyRaftPeersPresent(leaderNode1.configDataStore(), "pets", "member-2", "member-3"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "pets", "member-1", "member-3"); verifyRaftPeersPresent(replicaNode3.configDataStore(), "pets", "member-1", "member-2"); ClusterAdminRpcService service3 = new ClusterAdminRpcService(replicaNode3.configDataStore(), replicaNode3.operDataStore()); RpcResult<RemoveAllShardReplicasOutput> rpcResult = service3 .removeAllShardReplicas(new RemoveAllShardReplicasInputBuilder().setMemberName("member-3").build()) .get(10, TimeUnit.SECONDS); RemoveAllShardReplicasOutput result = verifySuccessfulRpcResult(rpcResult); verifyShardResults(result.getShardResult(), successShardResult("cars", DataStoreType.Config), successShardResult("people", DataStoreType.Config), successShardResult("pets", DataStoreType.Config), successShardResult("cars", DataStoreType.Operational), successShardResult("people", DataStoreType.Operational)); verifyRaftPeersPresent(leaderNode1.configDataStore(), "cars", "member-2"); verifyRaftPeersPresent(leaderNode1.configDataStore(), "people", "member-2"); verifyRaftPeersPresent(leaderNode1.configDataStore(), "pets", "member-2"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-1"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "people", "member-1"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "pets", "member-1"); verifyNoShardPresent(replicaNode3.configDataStore(), "cars"); verifyNoShardPresent(replicaNode3.configDataStore(), "people"); verifyNoShardPresent(replicaNode3.configDataStore(), "pets"); } @Test public void testChangeMemberVotingStatesForShard() throws Exception { String name = "testChangeMemberVotingStatusForShard"; String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.configDataStore().waitTillReady(); replicaNode3.configDataStore().waitTillReady(); verifyRaftPeersPresent(leaderNode1.configDataStore(), "cars", "member-2", "member-3"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-1", "member-3"); verifyRaftPeersPresent(replicaNode3.configDataStore(), "cars", "member-1", "member-2"); // Invoke RPC service on member-3 to change voting status ClusterAdminRpcService service3 = new ClusterAdminRpcService(replicaNode3.configDataStore(), replicaNode3.operDataStore()); RpcResult<Void> rpcResult = service3 .changeMemberVotingStatesForShard(new ChangeMemberVotingStatesForShardInputBuilder() .setShardName("cars").setDataStoreType(DataStoreType.Config) .setMemberVotingState(ImmutableList.of( new MemberVotingStateBuilder().setMemberName("member-2").setVoting(false).build(), new MemberVotingStateBuilder().setMemberName("member-3").setVoting(false).build())) .build()) .get(10, TimeUnit.SECONDS); verifySuccessfulRpcResult(rpcResult); verifyVotingStates(leaderNode1.configDataStore(), "cars", new SimpleEntry<>("member-1", true), new SimpleEntry<>("member-2", false), new SimpleEntry<>("member-3", false)); verifyVotingStates(replicaNode2.configDataStore(), "cars", new SimpleEntry<>("member-1", true), new SimpleEntry<>("member-2", false), new SimpleEntry<>("member-3", false)); verifyVotingStates(replicaNode3.configDataStore(), "cars", new SimpleEntry<>("member-1", true), new SimpleEntry<>("member-2", false), new SimpleEntry<>("member-3", false)); } @Test public void testChangeMemberVotingStatesForSingleNodeShard() throws Exception { String name = "testChangeMemberVotingStatesForSingleNodeShard"; String moduleShardsConfig = "module-shards-member1.conf"; MemberNode leaderNode = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); leaderNode.configDataStore().waitTillReady(); // Invoke RPC service on member-3 to change voting status ClusterAdminRpcService service = new ClusterAdminRpcService(leaderNode.configDataStore(), leaderNode.operDataStore()); RpcResult<Void> rpcResult = service .changeMemberVotingStatesForShard(new ChangeMemberVotingStatesForShardInputBuilder() .setShardName("cars").setDataStoreType(DataStoreType.Config) .setMemberVotingState(ImmutableList.of( new MemberVotingStateBuilder().setMemberName("member-1").setVoting(false).build())) .build()) .get(10, TimeUnit.SECONDS); verifyFailedRpcResult(rpcResult); verifyVotingStates(leaderNode.configDataStore(), "cars", new SimpleEntry<>("member-1", true)); } @Test public void testChangeMemberVotingStatesForAllShards() throws Exception { String name = "testChangeMemberVotingStatesForAllShards"; String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.configDataStore().waitTillReady(); leaderNode1.operDataStore().waitTillReady(); replicaNode3.configDataStore().waitTillReady(); replicaNode3.operDataStore().waitTillReady(); verifyRaftPeersPresent(leaderNode1.configDataStore(), "cars", "member-2", "member-3"); verifyRaftPeersPresent(replicaNode2.configDataStore(), "cars", "member-1", "member-3"); verifyRaftPeersPresent(replicaNode3.configDataStore(), "cars", "member-1", "member-2"); // Invoke RPC service on member-3 to change voting status ClusterAdminRpcService service3 = new ClusterAdminRpcService(replicaNode3.configDataStore(), replicaNode3.operDataStore()); RpcResult<ChangeMemberVotingStatesForAllShardsOutput> rpcResult = service3 .changeMemberVotingStatesForAllShards(new ChangeMemberVotingStatesForAllShardsInputBuilder() .setMemberVotingState(ImmutableList.of( new MemberVotingStateBuilder().setMemberName("member-2").setVoting(false).build(), new MemberVotingStateBuilder().setMemberName("member-3").setVoting(false).build())) .build()) .get(10, TimeUnit.SECONDS); ChangeMemberVotingStatesForAllShardsOutput result = verifySuccessfulRpcResult(rpcResult); verifyShardResults(result.getShardResult(), successShardResult("cars", DataStoreType.Config), successShardResult("people", DataStoreType.Config), successShardResult("cars", DataStoreType.Operational), successShardResult("people", DataStoreType.Operational)); verifyVotingStates( new DistributedDataStore[] { leaderNode1.configDataStore(), leaderNode1.operDataStore(), replicaNode2.configDataStore(), replicaNode2.operDataStore(), replicaNode3.configDataStore(), replicaNode3.operDataStore() }, new String[] { "cars", "people" }, new SimpleEntry<>("member-1", true), new SimpleEntry<>("member-2", false), new SimpleEntry<>("member-3", false)); } @Test public void testFlipMemberVotingStates() throws Exception { String name = "testFlipMemberVotingStates"; ServerConfigurationPayload persistedServerConfig = new ServerConfigurationPayload( Arrays.asList(new ServerInfo("member-1", true), new ServerInfo("member-2", true), new ServerInfo("member-3", false))); setupPersistedServerConfigPayload(persistedServerConfig, "member-1", name, "cars", "people"); setupPersistedServerConfigPayload(persistedServerConfig, "member-2", name, "cars", "people"); setupPersistedServerConfigPayload(persistedServerConfig, "member-3", name, "cars", "people"); String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.configDataStore().waitTillReady(); leaderNode1.operDataStore().waitTillReady(); replicaNode3.configDataStore().waitTillReady(); replicaNode3.operDataStore().waitTillReady(); verifyVotingStates(leaderNode1.configDataStore(), "cars", new SimpleEntry<>("member-1", true), new SimpleEntry<>("member-2", true), new SimpleEntry<>("member-3", false)); ClusterAdminRpcService service3 = new ClusterAdminRpcService(replicaNode3.configDataStore(), replicaNode3.operDataStore()); RpcResult<FlipMemberVotingStatesForAllShardsOutput> rpcResult = service3 .flipMemberVotingStatesForAllShards().get(10, TimeUnit.SECONDS); FlipMemberVotingStatesForAllShardsOutput result = verifySuccessfulRpcResult(rpcResult); verifyShardResults(result.getShardResult(), successShardResult("cars", DataStoreType.Config), successShardResult("people", DataStoreType.Config), successShardResult("cars", DataStoreType.Operational), successShardResult("people", DataStoreType.Operational)); verifyVotingStates( new DistributedDataStore[] { leaderNode1.configDataStore(), leaderNode1.operDataStore(), replicaNode2.configDataStore(), replicaNode2.operDataStore(), replicaNode3.configDataStore(), replicaNode3.operDataStore() }, new String[] { "cars", "people" }, new SimpleEntry<>("member-1", false), new SimpleEntry<>("member-2", false), new SimpleEntry<>("member-3", true)); // Leadership should have transferred to member 3 since it is the only remaining voting member. verifyRaftState(leaderNode1.configDataStore(), "cars", raftState -> { assertNotNull("Expected non-null leader Id", raftState.getLeader()); assertTrue("Expected leader member-1. Actual: " + raftState.getLeader(), raftState.getLeader().contains("member-3")); }); verifyRaftState(leaderNode1.operDataStore(), "cars", raftState -> { assertNotNull("Expected non-null leader Id", raftState.getLeader()); assertTrue("Expected leader member-1. Actual: " + raftState.getLeader(), raftState.getLeader().contains("member-3")); }); // Flip the voting states back to the original states. rpcResult = service3.flipMemberVotingStatesForAllShards().get(10, TimeUnit.SECONDS); result = verifySuccessfulRpcResult(rpcResult); verifyShardResults(result.getShardResult(), successShardResult("cars", DataStoreType.Config), successShardResult("people", DataStoreType.Config), successShardResult("cars", DataStoreType.Operational), successShardResult("people", DataStoreType.Operational)); verifyVotingStates( new DistributedDataStore[] { leaderNode1.configDataStore(), leaderNode1.operDataStore(), replicaNode2.configDataStore(), replicaNode2.operDataStore(), replicaNode3.configDataStore(), replicaNode3.operDataStore() }, new String[] { "cars", "people" }, new SimpleEntry<>("member-1", true), new SimpleEntry<>("member-2", true), new SimpleEntry<>("member-3", false)); // Leadership should have transferred to member 1 or 2. verifyRaftState(leaderNode1.configDataStore(), "cars", raftState -> { assertNotNull("Expected non-null leader Id", raftState.getLeader()); assertTrue("Expected leader member-1 or member-2. Actual: " + raftState.getLeader(), raftState.getLeader().contains("member-1") || raftState.getLeader().contains("member-2")); }); } @Test public void testFlipMemberVotingStatesWithNoInitialLeader() throws Exception { String name = "testFlipMemberVotingStatesWithNoInitialLeader"; // Members 1, 2, and 3 are initially started up as non-voting. Members 4, 5, and 6 are initially // non-voting and simulated as down by not starting them up. ServerConfigurationPayload persistedServerConfig = new ServerConfigurationPayload( Arrays.asList(new ServerInfo("member-1", false), new ServerInfo("member-2", false), new ServerInfo("member-3", false), new ServerInfo("member-4", true), new ServerInfo("member-5", true), new ServerInfo("member-6", true))); setupPersistedServerConfigPayload(persistedServerConfig, "member-1", name, "cars", "people"); setupPersistedServerConfigPayload(persistedServerConfig, "member-2", name, "cars", "people"); setupPersistedServerConfigPayload(persistedServerConfig, "member-3", name, "cars", "people"); String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf"; MemberNode replicaNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); // Initially there won't be a leader b/c all the up nodes are non-voting. replicaNode1.waitForMembersUp("member-2", "member-3"); verifyVotingStates(replicaNode1.configDataStore(), "cars", new SimpleEntry<>("member-1", false), new SimpleEntry<>("member-2", false), new SimpleEntry<>("member-3", false), new SimpleEntry<>("member-4", true), new SimpleEntry<>("member-5", true), new SimpleEntry<>("member-6", true)); verifyRaftState(replicaNode1.configDataStore(), "cars", raftState -> assertEquals("Expected raft state", RaftState.Follower.toString(), raftState.getRaftState())); ClusterAdminRpcService service1 = new ClusterAdminRpcService(replicaNode1.configDataStore(), replicaNode1.operDataStore()); RpcResult<FlipMemberVotingStatesForAllShardsOutput> rpcResult = service1 .flipMemberVotingStatesForAllShards().get(10, TimeUnit.SECONDS); FlipMemberVotingStatesForAllShardsOutput result = verifySuccessfulRpcResult(rpcResult); verifyShardResults(result.getShardResult(), successShardResult("cars", DataStoreType.Config), successShardResult("people", DataStoreType.Config), successShardResult("cars", DataStoreType.Operational), successShardResult("people", DataStoreType.Operational)); verifyVotingStates( new DistributedDataStore[] { replicaNode1.configDataStore(), replicaNode1.operDataStore(), replicaNode2.configDataStore(), replicaNode2.operDataStore(), replicaNode3.configDataStore(), replicaNode3.operDataStore() }, new String[] { "cars", "people" }, new SimpleEntry<>("member-1", true), new SimpleEntry<>("member-2", true), new SimpleEntry<>("member-3", true), new SimpleEntry<>("member-4", false), new SimpleEntry<>("member-5", false), new SimpleEntry<>("member-6", false)); // Since member 1 was changed to voting and there was no leader, it should've started and election // and become leader verifyRaftState(replicaNode1.configDataStore(), "cars", raftState -> { assertNotNull("Expected non-null leader Id", raftState.getLeader()); assertTrue("Expected leader member-1. Actual: " + raftState.getLeader(), raftState.getLeader().contains("member-1")); }); verifyRaftState(replicaNode1.operDataStore(), "cars", raftState -> { assertNotNull("Expected non-null leader Id", raftState.getLeader()); assertTrue("Expected leader member-1. Actual: " + raftState.getLeader(), raftState.getLeader().contains("member-1")); }); } @Test public void testFlipMemberVotingStatesWithVotingMembersDown() throws Exception { String name = "testFlipMemberVotingStatesWithVotingMembersDown"; // Members 4, 5, and 6 are initially non-voting and simulated as down by not starting them up. ServerConfigurationPayload persistedServerConfig = new ServerConfigurationPayload( Arrays.asList(new ServerInfo("member-1", true), new ServerInfo("member-2", true), new ServerInfo("member-3", true), new ServerInfo("member-4", false), new ServerInfo("member-5", false), new ServerInfo("member-6", false))); setupPersistedServerConfigPayload(persistedServerConfig, "member-1", name, "cars", "people"); setupPersistedServerConfigPayload(persistedServerConfig, "member-2", name, "cars", "people"); setupPersistedServerConfigPayload(persistedServerConfig, "member-3", name, "cars", "people"); String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf"; MemberNode leaderNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name) .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(DatastoreContext.newBuilder() .shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1)) .build(); MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name) .moduleShardsConfig(moduleShardsConfig).build(); leaderNode1.configDataStore().waitTillReady(); leaderNode1.operDataStore().waitTillReady(); verifyVotingStates(leaderNode1.configDataStore(), "cars", new SimpleEntry<>("member-1", true), new SimpleEntry<>("member-2", true), new SimpleEntry<>("member-3", true), new SimpleEntry<>("member-4", false), new SimpleEntry<>("member-5", false), new SimpleEntry<>("member-6", false)); ClusterAdminRpcService service1 = new ClusterAdminRpcService(leaderNode1.configDataStore(), leaderNode1.operDataStore()); RpcResult<FlipMemberVotingStatesForAllShardsOutput> rpcResult = service1 .flipMemberVotingStatesForAllShards().get(10, TimeUnit.SECONDS); FlipMemberVotingStatesForAllShardsOutput result = verifySuccessfulRpcResult(rpcResult); verifyShardResults(result.getShardResult(), successShardResult("cars", DataStoreType.Config), successShardResult("people", DataStoreType.Config), successShardResult("cars", DataStoreType.Operational), successShardResult("people", DataStoreType.Operational)); // Members 2 and 3 are now non-voting but should get replicated with the new new server config. verifyVotingStates( new DistributedDataStore[] { leaderNode1.configDataStore(), leaderNode1.operDataStore(), replicaNode2.configDataStore(), replicaNode2.operDataStore(), replicaNode3.configDataStore(), replicaNode3.operDataStore() }, new String[] { "cars", "people" }, new SimpleEntry<>("member-1", false), new SimpleEntry<>("member-2", false), new SimpleEntry<>("member-3", false), new SimpleEntry<>("member-4", true), new SimpleEntry<>("member-5", true), new SimpleEntry<>("member-6", true)); // The leader (member 1) was changed to non-voting but it shouldn't be able to step down as leader yet // b/c it can't get a majority consensus with all voting members down. So verify it remains the leader. verifyRaftState(leaderNode1.configDataStore(), "cars", raftState -> { assertNotNull("Expected non-null leader Id", raftState.getLeader()); assertTrue("Expected leader member-1", raftState.getLeader().contains("member-1")); }); } private void setupPersistedServerConfigPayload(ServerConfigurationPayload serverConfig, String member, String datastoreTypeSuffix, String... shards) { String[] datastoreTypes = { "config_", "oper_" }; for (String type : datastoreTypes) { for (String shard : shards) { List<ServerInfo> newServerInfo = new ArrayList<>(serverConfig.getServerConfig().size()); for (ServerInfo info : serverConfig.getServerConfig()) { newServerInfo.add(new ServerInfo(ShardIdentifier .create(shard, MemberName.forName(info.getId()), type + datastoreTypeSuffix).toString(), info.isVoting())); } String shardID = ShardIdentifier .create(shard, MemberName.forName(member), type + datastoreTypeSuffix).toString(); InMemoryJournal.addEntry(shardID, 1, new UpdateElectionTerm(1, null)); InMemoryJournal.addEntry(shardID, 2, new ReplicatedLogImplEntry(0, 1, new ServerConfigurationPayload(newServerInfo))); } } } @SafeVarargs private static void verifyVotingStates(DistributedDataStore[] datastores, String[] shards, SimpleEntry<String, Boolean>... expStates) throws Exception { for (DistributedDataStore datastore : datastores) { for (String shard : shards) { verifyVotingStates(datastore, shard, expStates); } } } @SafeVarargs private static void verifyVotingStates(DistributedDataStore datastore, String shardName, SimpleEntry<String, Boolean>... expStates) throws Exception { String localMemberName = datastore.getActorContext().getCurrentMemberName().getName(); Map<String, Boolean> expStateMap = new HashMap<>(); for (Entry<String, Boolean> e : expStates) { expStateMap.put(ShardIdentifier.create(shardName, MemberName.forName(e.getKey()), datastore.getActorContext().getDataStoreName()).toString(), e.getValue()); } verifyRaftState(datastore, shardName, raftState -> { String localPeerId = ShardIdentifier.create(shardName, MemberName.forName(localMemberName), datastore.getActorContext().getDataStoreName()).toString(); assertEquals("Voting state for " + localPeerId, expStateMap.get(localPeerId), raftState.isVoting()); for (Entry<String, Boolean> e : raftState.getPeerVotingStates().entrySet()) { assertEquals("Voting state for " + e.getKey(), expStateMap.get(e.getKey()), e.getValue()); } }); } private static void verifyShardResults(List<ShardResult> shardResults, ShardResult... expShardResults) { Map<String, ShardResult> expResultsMap = new HashMap<>(); for (ShardResult r : expShardResults) { expResultsMap.put(r.getShardName() + "-" + r.getDataStoreType(), r); } for (ShardResult result : shardResults) { ShardResult exp = expResultsMap.remove(result.getShardName() + "-" + result.getDataStoreType()); assertNotNull(String.format("Unexpected result for shard %s, type %s", result.getShardName(), result.getDataStoreType()), exp); assertEquals("isSucceeded", exp.isSucceeded(), result.isSucceeded()); if (exp.isSucceeded()) { assertNull("Expected null error message", result.getErrorMessage()); } else { assertNotNull("Expected error message", result.getErrorMessage()); } } if (!expResultsMap.isEmpty()) { fail("Missing shard results for " + expResultsMap.keySet()); } } private static ShardResult successShardResult(String shardName, DataStoreType type) { return new ShardResultBuilder().setDataStoreType(type).setShardName(shardName).setSucceeded(true).build(); } private static ShardResult failedShardResult(String shardName, DataStoreType type) { return new ShardResultBuilder().setDataStoreType(type).setShardName(shardName).setSucceeded(false).build(); } }