Examples with Database org.neo4j.kernel.database.Database used on opensource projects

Example 1 with Database

use of org.neo4j.kernel.database.Database in project neo4j by neo4j.

the class DatabaseAvailabilityIT method restartedDatabaseIsAvailable.

@Test
void restartedDatabaseIsAvailable() {
    DependencyResolver dependencyResolver = database.getDependencyResolver();
    DatabaseManager<?> databaseManager = getDatabaseManager(dependencyResolver);
    DatabaseContext databaseContext = databaseManager.getDatabaseContext(defaultNamedDatabaseId).get();
    Database database = databaseContext.database();
    executeTransactionOnDefaultDatabase();
    database.stop();
    assertThrows(DatabaseShutdownException.class, () -> this.database.beginTx());
    database.start();
    executeTransactionOnDefaultDatabase();
}

Example 2 with Database

use of org.neo4j.kernel.database.Database in project neo4j by neo4j.

the class AbstractDatabaseManager method startDatabase.

protected void startDatabase(NamedDatabaseId namedDatabaseId, DB context) {
    try {
        log.info("Starting '%s'.", namedDatabaseId);
        Database database = context.database();
        database.start();
    } catch (Throwable t) {
        throw new DatabaseManagementException(format("An error occurred! Unable to start `%s`.", namedDatabaseId), t);
    }
}

Example 3 with Database

use of org.neo4j.kernel.database.Database in project neo4j by neo4j.

the class AbstractDatabaseManager method stopDatabase.

protected void stopDatabase(NamedDatabaseId namedDatabaseId, DB context) {
    try {
        log.info("Stopping '%s'.", namedDatabaseId);
        Database database = context.database();
        database.stop();
        log.info("Stopped '%s' successfully.", namedDatabaseId);
    } catch (Throwable t) {
        log.error("Error stopping '%s'.", namedDatabaseId);
        throw new DatabaseManagementException(format("An error occurred! Unable to stop `%s`.", namedDatabaseId), t);
    }
}

Example 4 with Database

use of org.neo4j.kernel.database.Database in project neo4j by neo4j.

the class TransactionRangeDiagnosticsTest method shouldLogCorrectTransactionLogDiagnosticsForNoTransactionLogs.

@Test
void shouldLogCorrectTransactionLogDiagnosticsForNoTransactionLogs() throws IOException {
    // GIVEN
    Database database = databaseWithLogFilesContainingLowestTxId(noLogs());
    AssertableLogProvider logProvider = new AssertableLogProvider();
    Log logger = logProvider.getLog(getClass());
    // WHEN
    new TransactionRangeDiagnostics(database).dump(logger::info);
    // THEN
    assertThat(logProvider).containsMessages("Transaction log files stored on file store:").containsMessages(" - no transactions found").containsMessages(" - no checkpoints found");
}

Example 5 with Database

use of org.neo4j.kernel.database.Database in project neo4j by neo4j.

the class TransactionRangeDiagnosticsTest method shouldLogCorrectTransactionLogDiagnosticsForTransactionsAndCheckpointLogs.

@Test
void shouldLogCorrectTransactionLogDiagnosticsForTransactionsAndCheckpointLogs() throws Exception {
    // GIVEN
    long txLogLowVersion = 2;
    long txLogHighVersion = 10;
    long checkpointLogLowVersion = 0;
    long checkpointLogHighVersion = 3;
    StoreId storeId = new StoreId(12345);
    LogPosition checkpointLogPosition = new LogPosition(checkpointLogHighVersion, 34);
    Database database = databaseWithLogFilesContainingLowestTxId(logs(transactionLogsWithTransaction(txLogLowVersion, txLogHighVersion, 42), checkpointLogsWithLastCheckpoint(checkpointLogLowVersion, checkpointLogHighVersion, new CheckpointInfo(new LogEntryDetachedCheckpoint(KernelVersion.LATEST, checkpointLogPosition, 1234, storeId, "testing"), checkpointLogPosition))));
    AssertableLogProvider logProvider = new AssertableLogProvider();
    Log logger = logProvider.getLog(getClass());
    // WHEN
    new TransactionRangeDiagnostics(database).dump(logger::info);
    // THEN
    assertThat(logProvider).containsMessages("existing transaction log versions " + txLogLowVersion + "-" + txLogHighVersion).containsMessages("existing checkpoint log versions " + checkpointLogLowVersion + "-" + checkpointLogHighVersion);
}