Examples with TransactionId org.neo4j.storageengine.api.TransactionId used on opensource projects

Example 11 with TransactionId

use of org.neo4j.storageengine.api.TransactionId in project neo4j by neo4j.

the class MetaDataStore method setUpgradeTransaction.

public void setUpgradeTransaction(long id, int checksum, long timestamp, CursorContext cursorContext) {
    long pageId = pageIdForRecord(Position.UPGRADE_TRANSACTION_ID.id);
    assert pageId == pageIdForRecord(Position.UPGRADE_TRANSACTION_CHECKSUM.id);
    synchronized (upgradeTransactionLock) {
        try (PageCursor cursor = pagedFile.io(pageId, PF_SHARED_WRITE_LOCK, cursorContext)) {
            if (!cursor.next()) {
                throw new UnderlyingStorageException("Could not access MetaDataStore page " + pageId);
            }
            setRecord(cursor, Position.UPGRADE_TRANSACTION_ID, id);
            setRecord(cursor, Position.UPGRADE_TRANSACTION_CHECKSUM, checksum);
            setRecord(cursor, Position.UPGRADE_TRANSACTION_COMMIT_TIMESTAMP, timestamp);
            upgradeTxIdField = id;
            upgradeTxChecksumField = checksum;
            upgradeCommitTimestampField = timestamp;
            upgradeTransaction = new TransactionId(id, checksum, timestamp);
        } catch (IOException e) {
            throw new UnderlyingStorageException(e);
        }
    }
}

Example 12 with TransactionId

use of org.neo4j.storageengine.api.TransactionId in project neo4j by neo4j.

the class HighestTransactionId method offer.

/**
 * Offers a transaction id. Will be accepted if this is higher than the current highest.
 * This method is thread-safe.
 *
 * @param transactionId transaction id to compare for highest.
 * @param checksum checksum of the transaction.
 * @param commitTimestamp commit time for transaction with {@code transactionId}.
 * @return {@code true} if the given transaction id was higher than the current highest,
 * {@code false}.
 */
public boolean offer(long transactionId, int checksum, long commitTimestamp) {
    TransactionId high = highest.get();
    if (transactionId < high.transactionId()) {
        // a higher id has already been offered
        return false;
    }
    TransactionId update = new TransactionId(transactionId, checksum, commitTimestamp);
    while (!highest.compareAndSet(high, update)) {
        high = highest.get();
        if (high.transactionId() >= transactionId) {
            // apparently someone else set a higher id while we were trying to set this id
            return false;
        }
    }
    // we set our id as the highest
    return true;
}

Example 13 with TransactionId

use of org.neo4j.storageengine.api.TransactionId in project neo4j by neo4j.

the class NeoStoresTest method shouldAddUpgradeFieldsToTheNeoStoreIfNotPresent.

@Test
void shouldAddUpgradeFieldsToTheNeoStoreIfNotPresent() throws IOException {
    StoreFactory factory = newStoreFactory(databaseLayout, pageCache, fs);
    long recordVersion = defaultStoreVersion();
    try (NeoStores neoStores = factory.openAllNeoStores(true)) {
        MetaDataStore metaDataStore = neoStores.getMetaDataStore();
        metaDataStore.setCreationTime(3, NULL);
        metaDataStore.setRandomNumber(4, NULL);
        metaDataStore.setCurrentLogVersion(5, NULL);
        metaDataStore.setLastCommittedAndClosedTransactionId(6, 42, BASE_TX_COMMIT_TIMESTAMP, 43, 44, NULL);
        metaDataStore.setStoreVersion(recordVersion, NULL);
        metaDataStore.setLatestConstraintIntroducingTx(9, NULL);
    }
    Path file = databaseLayout.metadataStore();
    assertNotEquals(10, MetaDataStore.getRecord(pageCache, file, Position.UPGRADE_TRANSACTION_ID, databaseLayout.getDatabaseName(), NULL));
    assertNotEquals(11, MetaDataStore.getRecord(pageCache, file, Position.UPGRADE_TRANSACTION_CHECKSUM, databaseLayout.getDatabaseName(), NULL));
    MetaDataStore.setRecord(pageCache, file, Position.UPGRADE_TRANSACTION_ID, 10, databaseLayout.getDatabaseName(), NULL);
    MetaDataStore.setRecord(pageCache, file, Position.UPGRADE_TRANSACTION_CHECKSUM, 11, databaseLayout.getDatabaseName(), NULL);
    MetaDataStore.setRecord(pageCache, file, Position.UPGRADE_TIME, 12, databaseLayout.getDatabaseName(), NULL);
    try (NeoStores neoStores = factory.openAllNeoStores()) {
        MetaDataStore metaDataStore = neoStores.getMetaDataStore();
        assertEquals(3, metaDataStore.getCreationTime());
        assertEquals(4, metaDataStore.getRandomNumber());
        assertEquals(5, metaDataStore.getCurrentLogVersion());
        assertEquals(6, metaDataStore.getLastCommittedTransactionId());
        assertEquals(recordVersion, metaDataStore.getStoreVersion());
        assertEquals(9, metaDataStore.getLatestConstraintIntroducingTx());
        assertEquals(new TransactionId(10, 11, BASE_TX_COMMIT_TIMESTAMP), metaDataStore.getUpgradeTransaction());
        assertEquals(12, metaDataStore.getUpgradeTime());
        assertArrayEquals(new long[] { 6, 44, 43 }, metaDataStore.getLastClosedTransaction());
    }
    MetaDataStore.setRecord(pageCache, file, Position.UPGRADE_TRANSACTION_COMMIT_TIMESTAMP, 13, databaseLayout.getDatabaseName(), NULL);
    try (NeoStores neoStores = factory.openAllNeoStores()) {
        MetaDataStore metaDataStore = neoStores.getMetaDataStore();
        assertEquals(new TransactionId(10, 11, 13), metaDataStore.getUpgradeTransaction());
    }
}

Example 14 with TransactionId

use of org.neo4j.storageengine.api.TransactionId in project neo4j by neo4j.

the class TransactionLogInitializerTest method shouldResetMetaDataStoreWithTransactionId.

@Test
void shouldResetMetaDataStoreWithTransactionId() throws Exception {
    // Given
    var metaStore = mock(MetadataProvider.class);
    var txn = new TransactionId(3, -1322858814, currentTimeMillis());
    when(metaStore.getStoreId()).thenReturn(new StoreId(versionStringToLong(LATEST_STORE_VERSION)));
    when(metaStore.getLastClosedTransaction()).thenReturn(new long[] { txn.transactionId(), 0, 1613 });
    when(metaStore.getLastCommittedTransaction()).thenReturn(txn);
    when(metaStore.getLastCommittedTransactionId()).thenReturn(txn.transactionId());
    when(metaStore.getLastClosedTransactionId()).thenReturn(txn.transactionId());
    DatabaseLayout databaseLayout = Neo4jLayout.of(testDirectory.homePath()).databaseLayout(DEFAULT_DATABASE_NAME);
    // When
    var initializer = new TransactionLogInitializer(testDirectory.getFileSystem(), metaStore, INSTANCE, PageCacheTracer.NULL);
    initializer.initializeEmptyLogFile(databaseLayout, databaseLayout.getTransactionLogsDirectory(), "LostFiles");
    // Then
    verify(metaStore).resetLastClosedTransaction(eq(txn.transactionId()), eq(txn.transactionId()), eq((long) CURRENT_FORMAT_LOG_HEADER_SIZE), eq(true), any());
}

Example 15 with TransactionId

use of org.neo4j.storageengine.api.TransactionId in project neo4j by neo4j.

the class StoreMigratorTest method writeAndReadLastTxInformation.

@Test
void writeAndReadLastTxInformation() throws IOException {
    RecordStorageMigrator migrator = newStoreMigrator();
    TransactionId writtenTxId = new TransactionId(random.nextLong(), random.nextInt(), random.nextLong());
    migrator.writeLastTxInformation(databaseLayout, writtenTxId);
    TransactionId readTxId = migrator.readLastTxInformation(databaseLayout);
    assertEquals(writtenTxId, readTxId);
}