Examples with LogRotationMonitorAdapter org.neo4j.kernel.impl.transaction.log.rotation.monitor.LogRotationMonitorAdapter used on opensource projects

Example 1 with LogRotationMonitorAdapter

use of org.neo4j.kernel.impl.transaction.log.rotation.monitor.LogRotationMonitorAdapter in project neo4j by neo4j.

the class TransactionLogFileIT method doNotScanDirectoryOnRotate.

@Test
@EnabledOnOs(OS.LINUX)
void doNotScanDirectoryOnRotate() throws IOException {
    LogFiles logFiles = LogFilesBuilder.builder(databaseLayout, fileSystem).withTransactionIdStore(transactionIdStore).withLogVersionRepository(logVersionRepository).withStoreId(StoreId.UNKNOWN).build();
    life.add(logFiles);
    life.start();
    MutableLong rotationObservedVersion = new MutableLong();
    LogRotation logRotation = FileLogRotation.transactionLogRotation(logFiles, Clock.systemUTC(), new DatabaseHealth(NO_OP, NullLog.getInstance()), new LogRotationMonitorAdapter() {

        @Override
        public void startRotation(long currentLogVersion) {
            rotationObservedVersion.setValue(currentLogVersion);
        }
    });
    for (int i = 0; i < 6; i++) {
        for (Path path : logFiles.logFiles()) {
            FileUtils.deleteFile(path);
        }
        logRotation.rotateLogFile(LogAppendEvent.NULL);
    }
    assertEquals(5, rotationObservedVersion.getValue());
    assertEquals(6, logFiles.getLogFile().getCurrentLogVersion());
}

Example 2 with LogRotationMonitorAdapter

use of org.neo4j.kernel.impl.transaction.log.rotation.monitor.LogRotationMonitorAdapter in project neo4j by neo4j.

the class TestStartTransactionDuringLogRotation method setUp.

@BeforeEach
void setUp() throws InterruptedException {
    executor = Executors.newCachedThreadPool();
    startLogRotationLatch = new CountDownLatch(1);
    completeLogRotationLatch = new CountDownLatch(1);
    writerStopped = new AtomicBoolean();
    LogRotationMonitor rotationListener = new LogRotationMonitorAdapter() {

        @Override
        public void startRotation(long currentLogVersion) {
            startLogRotationLatch.countDown();
            try {
                completeLogRotationLatch.await();
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    };
    monitors.addMonitorListener(rotationListener);
    label = Label.label("Label");
    rotationFuture = t2.execute(forceLogRotation(database));
    // Waiting for the writer task to start a log rotation
    startLogRotationLatch.await();
// Then we should be able to start a transaction, though perhaps not be able to finish it.
// This is what the individual test methods will be doing.
// The test passes when transaction.close completes within the test timeout, that is, it didn't deadlock.
}