Examples with InputNode org.neo4j.unsafe.impl.batchimport.input.InputNode used on opensource projects

Example 21 with InputNode

use of org.neo4j.unsafe.impl.batchimport.input.InputNode in project neo4j by neo4j.

the class CsvInputTest method shouldHandleMultipleInputGroups.

@Test
public void shouldHandleMultipleInputGroups() throws Exception {
    // GIVEN multiple input groups, each with their own, specific, header
    DataFactory<InputNode> group1 = data(":ID,name,kills:int,health:int\n" + "1,Jim,10,100\n" + "2,Abathur,0,200\n");
    DataFactory<InputNode> group2 = data(":ID,type\n" + "3,zergling\n" + "4,csv\n");
    Iterable<DataFactory<InputNode>> data = dataIterable(group1, group2);
    Input input = new CsvInput(data, defaultFormatNodeFileHeader(), null, null, IdType.STRING, config(COMMAS), silentBadCollector(0), getRuntime().availableProcessors());
    // WHEN iterating over them, THEN the expected data should come out
    try (InputIterator<InputNode> nodes = input.nodes().iterator()) {
        assertNode(nodes.next(), "1", properties("name", "Jim", "kills", 10, "health", 100), labels());
        assertNode(nodes.next(), "2", properties("name", "Abathur", "kills", 0, "health", 200), labels());
        assertNode(nodes.next(), "3", properties("type", "zergling"), labels());
        assertNode(nodes.next(), "4", properties("type", "csv"), labels());
        assertFalse(nodes.hasNext());
    }
}

Example 22 with InputNode

use of org.neo4j.unsafe.impl.batchimport.input.InputNode in project neo4j by neo4j.

the class CsvInputTest method shouldHaveIdSetAsPropertyIfIdHeaderEntryIsNamed.

@Test
public void shouldHaveIdSetAsPropertyIfIdHeaderEntryIsNamed() throws Exception {
    // GIVEN
    DataFactory<InputNode> data = data("myId:ID,name:string,level:int\n" + "abc,Mattias,1\n" + // this node is anonymous
    "def,Johan,2\n");
    Iterable<DataFactory<InputNode>> dataIterable = dataIterable(data);
    Input input = new CsvInput(dataIterable, defaultFormatNodeFileHeader(), null, null, IdType.STRING, config(COMMAS), silentBadCollector(0), getRuntime().availableProcessors());
    // WHEN
    try (ResourceIterator<InputNode> nodes = input.nodes().iterator()) {
        // THEN
        assertNode(nodes.next(), "abc", new Object[] { "myId", "abc", "name", "Mattias", "level", 1 }, labels());
        assertNode(nodes.next(), "def", new Object[] { "myId", "def", "name", "Johan", "level", 2 }, labels());
        assertFalse(nodes.hasNext());
    }
}

Example 23 with InputNode

use of org.neo4j.unsafe.impl.batchimport.input.InputNode in project neo4j by neo4j.

the class CsvInputTest method shouldTreatEmptyQuotedStringsAsNullIfConfiguredTo.

@Test
public void shouldTreatEmptyQuotedStringsAsNullIfConfiguredTo() throws Exception {
    // GIVEN
    Iterable<DataFactory<InputNode>> data = DataFactories.nodeData(CsvInputTest.<InputNode>data(":ID,one,two,three\n" + "1,\"\",,value"));
    Configuration config = config(new Configuration.Overridden(COMMAS) {

        @Override
        public boolean emptyQuotedStringsAsNull() {
            return true;
        }
    });
    Input input = new CsvInput(data, defaultFormatNodeFileHeader(), null, null, IdType.INTEGER, config, silentBadCollector(0), getRuntime().availableProcessors());
    // WHEN
    try (InputIterator<InputNode> nodes = input.nodes().iterator()) {
        InputNode node = nodes.next();
        // THEN
        assertNode(node, 1L, properties("three", "value"), labels());
        assertFalse(nodes.hasNext());
    }
}

Example 24 with InputNode

use of org.neo4j.unsafe.impl.batchimport.input.InputNode in project neo4j by neo4j.

the class StoreMigrator method legacyNodesAsInput.

private InputIterable<InputNode> legacyNodesAsInput(NeoStores legacyStore, boolean requiresPropertyMigration, RecordCursors cursors) {
    NodeStore store = legacyStore.getNodeStore();
    final BiConsumer<InputNode, NodeRecord> propertyDecorator = propertyDecorator(requiresPropertyMigration, cursors);
    return new StoreScanAsInputIterable<InputNode, NodeRecord>(store) {

        @Override
        protected InputNode inputEntityOf(NodeRecord record) {
            InputNode node = new InputNode("legacy store", record.getId(), record.getId() * NodeRecordFormat.RECORD_SIZE, record.getId(), InputEntity.NO_PROPERTIES, record.getNextProp(), InputNode.NO_LABELS, record.getLabelField());
            propertyDecorator.accept(node, record);
            return node;
        }
    };
}

Example 25 with InputNode

use of org.neo4j.unsafe.impl.batchimport.input.InputNode in project neo4j by neo4j.

the class StoreMigrator method migrateWithBatchImporter.

private void migrateWithBatchImporter(File storeDir, File migrationDir, long lastTxId, long lastTxChecksum, long lastTxLogVersion, long lastTxLogByteOffset, MigrationProgressMonitor.Section progressMonitor, RecordFormats oldFormat, RecordFormats newFormat) throws IOException {
    prepareBatchImportMigration(storeDir, migrationDir, oldFormat, newFormat);
    boolean requiresDynamicStoreMigration = !newFormat.dynamic().equals(oldFormat.dynamic());
    boolean requiresPropertyMigration = !newFormat.property().equals(oldFormat.property()) || requiresDynamicStoreMigration;
    File badFile = new File(storeDir, Configuration.BAD_FILE_NAME);
    try (NeoStores legacyStore = instantiateLegacyStore(oldFormat, storeDir);
        RecordCursors nodeInputCursors = new RecordCursors(legacyStore);
        RecordCursors relationshipInputCursors = new RecordCursors(legacyStore);
        OutputStream badOutput = new BufferedOutputStream(new FileOutputStream(badFile, false))) {
        Configuration importConfig = new Configuration.Overridden(config);
        AdditionalInitialIds additionalInitialIds = readAdditionalIds(lastTxId, lastTxChecksum, lastTxLogVersion, lastTxLogByteOffset);
        // We have to make sure to keep the token ids if we're migrating properties/labels
        BatchImporter importer = new ParallelBatchImporter(migrationDir.getAbsoluteFile(), fileSystem, pageCache, importConfig, logService, withDynamicProcessorAssignment(migrationBatchImporterMonitor(legacyStore, progressMonitor, importConfig), importConfig), additionalInitialIds, config, newFormat);
        InputIterable<InputNode> nodes = legacyNodesAsInput(legacyStore, requiresPropertyMigration, nodeInputCursors);
        InputIterable<InputRelationship> relationships = legacyRelationshipsAsInput(legacyStore, requiresPropertyMigration, relationshipInputCursors);
        importer.doImport(Inputs.input(nodes, relationships, IdMappers.actual(), IdGenerators.fromInput(), Collectors.badCollector(badOutput, 0)));
        // During migration the batch importer doesn't necessarily writes all entities, depending on
        // which stores needs migration. Node, relationship, relationship group stores are always written
        // anyways and cannot be avoided with the importer, but delete the store files that weren't written
        // (left empty) so that we don't overwrite those in the real store directory later.
        Collection<StoreFile> storesToDeleteFromMigratedDirectory = new ArrayList<>();
        storesToDeleteFromMigratedDirectory.add(StoreFile.NEO_STORE);
        if (!requiresPropertyMigration) {
            // We didn't migrate properties, so the property stores in the migrated store are just empty/bogus
            storesToDeleteFromMigratedDirectory.addAll(asList(StoreFile.PROPERTY_STORE, StoreFile.PROPERTY_STRING_STORE, StoreFile.PROPERTY_ARRAY_STORE));
        }
        if (!requiresDynamicStoreMigration) {
            // We didn't migrate labels (dynamic node labels) or any other dynamic store
            storesToDeleteFromMigratedDirectory.addAll(asList(StoreFile.NODE_LABEL_STORE, StoreFile.LABEL_TOKEN_STORE, StoreFile.LABEL_TOKEN_NAMES_STORE, StoreFile.RELATIONSHIP_TYPE_TOKEN_STORE, StoreFile.RELATIONSHIP_TYPE_TOKEN_NAMES_STORE, StoreFile.PROPERTY_KEY_TOKEN_STORE, StoreFile.PROPERTY_KEY_TOKEN_NAMES_STORE, StoreFile.SCHEMA_STORE));
        }
        StoreFile.fileOperation(DELETE, fileSystem, migrationDir, null, storesToDeleteFromMigratedDirectory, true, null, StoreFileType.values());
        // When migrating on a block device there might be some files only accessible via the page cache.
        try {
            Predicate<FileHandle> fileHandlePredicate = fileHandle -> storesToDeleteFromMigratedDirectory.stream().anyMatch(storeFile -> storeFile.fileName(StoreFileType.STORE).equals(fileHandle.getFile().getName()));
            pageCache.streamFilesRecursive(migrationDir).filter(fileHandlePredicate).forEach(FileHandle.HANDLE_DELETE);
        } catch (NoSuchFileException e) {
        // This means that we had no files only present in the page cache, this is fine.
        }
    }
}