Examples with SchemaRule org.neo4j.internal.schema.SchemaRule used on opensource projects

Example 1 with SchemaRule

use of org.neo4j.internal.schema.SchemaRule in project neo4j by neo4j.

the class LogCommandSerializationV4_0 method writeSchemaRuleCommand.

@Override
public void writeSchemaRuleCommand(WritableChannel channel, Command.SchemaRuleCommand command) throws IOException {
    channel.put(NeoCommandType.SCHEMA_RULE_COMMAND);
    channel.putLong(command.getBefore().getId());
    SchemaRule schemaRule = command.getSchemaRule();
    boolean hasSchemaRule = schemaRule != null;
    channel.put(hasSchemaRule ? SchemaRecord.COMMAND_HAS_SCHEMA_RULE : SchemaRecord.COMMAND_HAS_NO_SCHEMA_RULE);
    writeSchemaRecord(channel, command.getBefore());
    writeSchemaRecord(channel, command.getAfter());
    if (hasSchemaRule) {
        writeSchemaRule(channel, schemaRule);
    }
}

Example 2 with SchemaRule

use of org.neo4j.internal.schema.SchemaRule in project neo4j by neo4j.

the class NeoStoreTransactionApplier method visitSchemaRuleCommand.

@Override
public boolean visitSchemaRuleCommand(Command.SchemaRuleCommand command) {
    // schema rules. Execute these after generating the property updates so. If executed
    // before and we've got a transaction that sets properties/labels as well as creating an index
    // we might end up with this corner-case:
    // 1) index rule created and index population job started
    // 2) index population job processes some nodes, but doesn't complete
    // 3) we gather up property updates and send those to the indexes. The newly created population
    // job might get those as updates
    // 4) the population job will apply those updates as added properties, and might end up with duplicate
    // entries for the same property
    updateStore(neoStores.getSchemaStore(), command);
    SchemaRule schemaRule = command.getSchemaRule();
    boolean isConstraint = command.getAfter().isConstraint();
    onSchemaRuleChange(command.getMode(), command.getKey(), schemaRule, isConstraint);
    return false;
}

Example 3 with SchemaRule

use of org.neo4j.internal.schema.SchemaRule in project neo4j by neo4j.

the class LogCommandSerializationV4_0Test method shouldReadSchemaCommand.

@RepeatedTest(100)
void shouldReadSchemaCommand() throws Exception {
    // given
    InMemoryClosableChannel channel = new InMemoryClosableChannel();
    SchemaRecord before = createRandomSchemaRecord();
    SchemaRecord after = createRandomSchemaRecord();
    markAfterRecordAsCreatedIfCommandLooksCreated(before, after);
    long id = after.getId();
    SchemaRule rule = IndexPrototype.forSchema(SchemaDescriptor.forLabel(1, 2, 3)).withName("index_" + id).materialise(id);
    writer().writeSchemaRuleCommand(channel, new Command.SchemaRuleCommand(writer(), before, after, rule));
    CommandReader reader = createReader();
    Command.SchemaRuleCommand command = (Command.SchemaRuleCommand) reader.read(channel);
    assertBeforeAndAfterEquals(command, before, after);
}

Example 4 with SchemaRule

use of org.neo4j.internal.schema.SchemaRule in project neo4j by neo4j.

the class Commands method createIndexRule.

public static SchemaRuleCommand createIndexRule(IndexProviderDescriptor providerDescriptor, long id, LabelSchemaDescriptor descriptor) {
    SchemaRule rule = IndexPrototype.forSchema(descriptor, providerDescriptor).withName("index_" + id).materialise(id);
    SchemaRecord before = new SchemaRecord(id).initialize(false, Record.NO_NEXT_PROPERTY.longValue());
    SchemaRecord after = new SchemaRecord(id).initialize(true, 33);
    return new SchemaRuleCommand(before, after, rule);
}

Example 5 with SchemaRule

use of org.neo4j.internal.schema.SchemaRule in project neo4j by neo4j.

the class RecordStorageMigratorIT method mustMigrateSchemaStoreToNewFormat.

@ParameterizedTest
@MethodSource("versions")
void mustMigrateSchemaStoreToNewFormat(String version, LogPosition expectedLogPosition, Function<TransactionId, Boolean> txIdComparator) throws Exception {
    // Given we have an old store full of random schema rules.
    Path prepare = testDirectory.directory("prepare");
    var fs = testDirectory.getFileSystem();
    MigrationTestUtils.prepareSampleLegacyDatabase(version, fs, databaseLayout.databaseDirectory(), prepare);
    // and a state of the migration saying that it has done the actual migration
    LogService logService = NullLogService.getInstance();
    // Uses this special scan-on-open IGF because when the new IndexedIdGenerator was introduced this test would break
    // when trying to open an older store, before doing migration.
    IdGeneratorFactory igf = new ScanOnOpenOverwritingIdGeneratorFactory(fs, databaseLayout.getDatabaseName());
    LogProvider logProvider = logService.getInternalLogProvider();
    // Prepare all the tokens we'll need.
    StoreFactory legacyStoreFactory = new StoreFactory(databaseLayout, CONFIG, igf, pageCache, fs, StandardV3_4.RECORD_FORMATS, logProvider, PageCacheTracer.NULL, writable(), immutable.empty());
    NeoStores stores = legacyStoreFactory.openNeoStores(false, StoreType.LABEL_TOKEN, StoreType.LABEL_TOKEN_NAME, StoreType.RELATIONSHIP_TYPE_TOKEN, StoreType.RELATIONSHIP_TYPE_TOKEN_NAME, StoreType.PROPERTY_KEY_TOKEN, StoreType.PROPERTY_KEY_TOKEN_NAME);
    createTokens(stores.getLabelTokenStore(), MAX_LABEL_ID);
    createTokens(stores.getRelationshipTypeTokenStore(), MAX_RELATIONSHIP_TYPE_ID);
    createTokens(stores.getPropertyKeyTokenStore(), MAX_PROPERTY_KEY_ID);
    stores.close();
    // Prepare the legacy schema store we'll migrate.
    Path storeFile = databaseLayout.schemaStore();
    Path idFile = databaseLayout.idSchemaStore();
    SchemaStore35 schemaStore35 = new SchemaStore35(storeFile, idFile, CONFIG, IdType.SCHEMA, igf, pageCache, logProvider, StandardV3_4.RECORD_FORMATS, writable(), DEFAULT_DATABASE_NAME, immutable.empty());
    schemaStore35.initialise(false, NULL);
    SplittableRandom rng = new SplittableRandom(randomRule.seed());
    LongHashSet indexes = new LongHashSet();
    LongHashSet constraints = new LongHashSet();
    for (int i = 0; i < 10; i++) {
        long id = schemaStore35.nextId(NULL);
        MutableLongSet target = rng.nextInt(3) < 2 ? indexes : constraints;
        target.add(id);
    }
    List<SchemaRule> generatedRules = new ArrayList<>();
    RealIdsRandomSchema randomSchema = new RealIdsRandomSchema(rng, indexes, constraints);
    while (randomSchema.hasMoreIds()) {
        try {
            SchemaRule schemaRule = randomSchema.nextSchemaRule();
            if (schemaRule instanceof ConstraintDescriptor) {
                ConstraintDescriptor constraint = (ConstraintDescriptor) schemaRule;
                if (constraint.isIndexBackedConstraint() && !constraint.asIndexBackedConstraint().hasOwnedIndexId()) {
                    // Filter out constraints that are supposed to own indexes, but don't, because those are illegal to persist.
                    randomSchema.rollback();
                    continue;
                }
            }
            randomSchema.commit();
            generatedRules.add(schemaRule);
            List<DynamicRecord> dynamicRecords = allocateFrom(schemaStore35, schemaRule, NULL);
            for (DynamicRecord dynamicRecord : dynamicRecords) {
                schemaStore35.updateRecord(dynamicRecord, NULL);
            }
        } catch (NoSuchElementException ignore) {
        // We're starting to run low on ids, but just ignore this and loop as along as there are still some left.
        }
    }
    schemaStore35.flush(NULL);
    schemaStore35.close();
    RecordStoreVersionCheck check = getVersionCheck(pageCache, databaseLayout);
    String versionToMigrateFrom = getVersionToMigrateFrom(check);
    MigrationProgressMonitor progressMonitor = SILENT;
    RecordStorageMigrator migrator = new RecordStorageMigrator(fs, pageCache, CONFIG, logService, jobScheduler, PageCacheTracer.NULL, batchImporterFactory, INSTANCE);
    // When we migrate it to the new store format.
    String versionToMigrateTo = getVersionToMigrateTo(check);
    ProgressReporter reporter = progressMonitor.startSection("section");
    migrator.migrate(databaseLayout, migrationLayout, reporter, versionToMigrateFrom, versionToMigrateTo, EMPTY);
    migrator.moveMigratedFiles(migrationLayout, databaseLayout, versionToMigrateFrom, versionToMigrateTo);
    generatedRules.sort(Comparator.comparingLong(SchemaRule::getId));
    // Then the new store should retain an exact representation of the old-format schema rules.
    StoreFactory storeFactory = new StoreFactory(databaseLayout, CONFIG, igf, pageCache, fs, logProvider, PageCacheTracer.NULL, writable());
    try (NeoStores neoStores = storeFactory.openAllNeoStores()) {
        SchemaStore schemaStore = neoStores.getSchemaStore();
        TokenHolders tokenHolders = StoreTokens.readOnlyTokenHolders(neoStores, NULL);
        SchemaStorage storage = new SchemaStorage(schemaStore, tokenHolders, () -> KernelVersion.LATEST);
        List<SchemaRule> migratedRules = new ArrayList<>();
        storage.getAll(NULL).iterator().forEachRemaining(migratedRules::add);
        // Nerf the rule names, since migration may change those around.
        migratedRules = migratedRules.stream().map(r -> r.withName("a")).collect(Collectors.toList());
        generatedRules = generatedRules.stream().map(r -> r.withName("a")).collect(Collectors.toList());
        assertThat(migratedRules).isEqualTo(generatedRules);
    }
}