Examples with GlobalSessionTrackerState org.neo4j.causalclustering.core.replication.session.GlobalSessionTrackerState used on opensource projects

Example 1 with GlobalSessionTrackerState

use of org.neo4j.causalclustering.core.replication.session.GlobalSessionTrackerState in project neo4j by neo4j.

the class CoreBootstrapperTest method shouldSetAllCoreState.

@Test
public void shouldSetAllCoreState() throws Exception {
    // given
    int nodeCount = 100;
    FileSystemAbstraction fileSystem = fileSystemRule.get();
    File classicNeo4jStore = RestoreClusterUtils.createClassicNeo4jStore(testDirectory.directory(), fileSystem, nodeCount, Standard.LATEST_NAME);
    PageCache pageCache = pageCacheRule.getPageCache(fileSystem);
    CoreBootstrapper bootstrapper = new CoreBootstrapper(classicNeo4jStore, pageCache, fileSystem, Config.defaults(), NullLogProvider.getInstance());
    // when
    Set<MemberId> membership = asSet(randomMember(), randomMember(), randomMember());
    CoreSnapshot snapshot = bootstrapper.bootstrap(membership);
    // then
    assertEquals(nodeCount, ((IdAllocationState) snapshot.get(CoreStateType.ID_ALLOCATION)).firstUnallocated(IdType.NODE));
    /* Bootstrapped state is created in RAFT land at index -1 and term -1. */
    assertEquals(0, snapshot.prevIndex());
    assertEquals(0, snapshot.prevTerm());
    /* Lock is initially not taken. */
    assertEquals(new ReplicatedLockTokenState(), snapshot.get(CoreStateType.LOCK_TOKEN));
    /* Raft has the bootstrapped set of members initially. */
    assertEquals(membership, ((RaftCoreState) snapshot.get(CoreStateType.RAFT_CORE_STATE)).committed().members());
    /* The session state is initially empty. */
    assertEquals(new GlobalSessionTrackerState(), snapshot.get(CoreStateType.SESSION_TRACKER));
    LastCommittedIndexFinder lastCommittedIndexFinder = new LastCommittedIndexFinder(new ReadOnlyTransactionIdStore(pageCache, classicNeo4jStore), new ReadOnlyTransactionStore(pageCache, fileSystem, classicNeo4jStore, new Monitors()), NullLogProvider.getInstance());
    long lastCommittedIndex = lastCommittedIndexFinder.getLastCommittedIndex();
    assertEquals(-1, lastCommittedIndex);
}

Example 2 with GlobalSessionTrackerState

use of org.neo4j.causalclustering.core.replication.session.GlobalSessionTrackerState in project neo4j by neo4j.

the class CoreBootstrapper method bootstrap.

public CoreSnapshot bootstrap(Set<MemberId> members) throws IOException {
    StoreFactory factory = new StoreFactory(storeDir, config, new DefaultIdGeneratorFactory(fs), pageCache, fs, logProvider);
    NeoStores neoStores = factory.openAllNeoStores(true);
    neoStores.close();
    CoreSnapshot coreSnapshot = new CoreSnapshot(FIRST_INDEX, FIRST_TERM);
    coreSnapshot.add(CoreStateType.ID_ALLOCATION, deriveIdAllocationState(storeDir));
    coreSnapshot.add(CoreStateType.LOCK_TOKEN, new ReplicatedLockTokenState());
    coreSnapshot.add(CoreStateType.RAFT_CORE_STATE, new RaftCoreState(new MembershipEntry(FIRST_INDEX, members)));
    coreSnapshot.add(CoreStateType.SESSION_TRACKER, new GlobalSessionTrackerState());
    appendNullTransactionLogEntryToSetRaftIndexToMinusOne();
    return coreSnapshot;
}