Examples with DatabaseStateService org.neo4j.dbms.DatabaseStateService used on opensource projects

Example 1 with DatabaseStateService

use of org.neo4j.dbms.DatabaseStateService in project neo4j by neo4j.

the class DatabaseStartupTest method startDatabaseWithoutStoreFilesAndWithTransactionLogFilesFailure.

@Test
void startDatabaseWithoutStoreFilesAndWithTransactionLogFilesFailure() throws IOException {
    // Create a store
    DatabaseManagementService managementService = new TestDatabaseManagementServiceBuilder(databaseLayout).build();
    GraphDatabaseAPI db = (GraphDatabaseAPI) managementService.database(DEFAULT_DATABASE_NAME);
    DatabaseLayout databaseLayout = db.databaseLayout();
    try (Transaction tx = db.beginTx()) {
        tx.createNode();
        tx.commit();
    }
    managementService.shutdown();
    fs.deleteRecursively(databaseLayout.databaseDirectory());
    // Try to start
    managementService = new TestDatabaseManagementServiceBuilder(databaseLayout).build();
    try {
        db = (GraphDatabaseAPI) managementService.database(DEFAULT_DATABASE_NAME);
        assertFalse(db.isAvailable(10));
        DatabaseStateService dbStateService = db.getDependencyResolver().resolveDependency(DatabaseStateService.class);
        Optional<Throwable> cause = dbStateService.causeOfFailure(db.databaseId());
        assertTrue(cause.isPresent());
        assertThat(cause.get()).hasStackTraceContaining("Fail to start '" + db.databaseId() + "' since transaction logs were found, while database ");
    } finally {
        managementService.shutdown();
    }
}

Example 2 with DatabaseStateService

use of org.neo4j.dbms.DatabaseStateService in project neo4j by neo4j.

the class DatabaseShutdownTest method shouldShutdownCorrectlyWhenCheckPointingOnShutdownFails.

@Test
void shouldShutdownCorrectlyWhenCheckPointingOnShutdownFails() {
    TestDatabaseManagementServiceBuilderWithFailingPageCacheFlush factory = new TestDatabaseManagementServiceBuilderWithFailingPageCacheFlush(databaseLayout.databaseDirectory(), fs);
    DatabaseManagementService managementService = factory.build();
    GraphDatabaseAPI databaseService = (GraphDatabaseAPI) managementService.database(DEFAULT_DATABASE_NAME);
    DatabaseStateService dbStateService = databaseService.getDependencyResolver().resolveDependency(DatabaseStateService.class);
    factory.setFailFlush(true);
    managementService.shutdown();
    assertTrue(dbStateService.causeOfFailure(databaseService.databaseId()).isPresent());
    assertEquals(LifecycleStatus.SHUTDOWN, factory.getDatabaseStatus());
}

Example 3 with DatabaseStateService

use of org.neo4j.dbms.DatabaseStateService in project neo4j by neo4j.

the class DatabaseManagementServiceFactory method startDatabaseServer.

private static void startDatabaseServer(GlobalModule globalModule, LifeSupport globalLife, Log internalLog, DatabaseManager<?> databaseManager, DatabaseManagementService managementService) {
    RuntimeException startupException = null;
    try {
        databaseManager.initialiseSystemDatabase();
        globalLife.start();
        DatabaseStateService databaseStateService = globalModule.getGlobalDependencies().resolveDependency(DatabaseStateService.class);
        verifySystemDatabaseStart(databaseManager, databaseStateService);
    } catch (Throwable throwable) {
        String message = "Error starting Neo4j database server at " + globalModule.getNeo4jLayout().databasesDirectory();
        startupException = new RuntimeException(message, throwable);
        internalLog.error(message, throwable);
    } finally {
        if (startupException != null) {
            try {
                managementService.shutdown();
            } catch (Throwable shutdownError) {
                startupException.addSuppressed(shutdownError);
            }
        }
    }
    if (startupException != null) {
        internalLog.error("Failed to start database server.", startupException);
        throw startupException;
    }
}

Example 4 with DatabaseStateService

use of org.neo4j.dbms.DatabaseStateService in project neo4j by neo4j.

the class RecordFormatMigrationIT method assertDefaultDatabaseFailed.

private Throwable assertDefaultDatabaseFailed(GraphDatabaseAPI database) {
    assertThrows(Throwable.class, database::beginTx);
    DatabaseStateService dbStateService = getDatabaseStateService(database);
    var failure = dbStateService.causeOfFailure(database.databaseId());
    return failure.orElseThrow(() -> new AssertionError(format("No failure found for database %s", database.databaseId().name())));
}

Example 5 with DatabaseStateService

use of org.neo4j.dbms.DatabaseStateService in project neo4j by neo4j.

the class RecoveryIT method failToStartDatabaseWithRemovedTransactionLogs.

@Test
void failToStartDatabaseWithRemovedTransactionLogs() throws Throwable {
    GraphDatabaseAPI database = createDatabase();
    generateSomeData(database);
    managementService.shutdown();
    removeTransactionLogs();
    GraphDatabaseAPI restartedDb = createDatabase();
    try {
        DatabaseStateService dbStateService = restartedDb.getDependencyResolver().resolveDependency(DatabaseStateService.class);
        var failure = dbStateService.causeOfFailure(restartedDb.databaseId());
        assertTrue(failure.isPresent());
        assertThat(getRootCause(failure.get()).getMessage()).contains("Transaction logs are missing and recovery is not possible.");
    } finally {
        managementService.shutdown();
    }
}