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

Example 1 with LogRotation

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

the class NeoStoreDataSource method buildTransactionLogs.

private NeoStoreTransactionLogModule buildTransactionLogs(File storeDir, Config config, LogProvider logProvider, JobScheduler scheduler, FileSystemAbstraction fileSystemAbstraction, StorageEngine storageEngine, LogEntryReader<ReadableClosablePositionAwareChannel> logEntryReader, SynchronizedArrayIdOrderingQueue legacyIndexTransactionOrdering, TransactionIdStore transactionIdStore, LogVersionRepository logVersionRepository) {
    TransactionMetadataCache transactionMetadataCache = new TransactionMetadataCache(100_000);
    LogHeaderCache logHeaderCache = new LogHeaderCache(1000);
    final PhysicalLogFiles logFiles = new PhysicalLogFiles(storeDir, PhysicalLogFile.DEFAULT_NAME, fileSystemAbstraction);
    final PhysicalLogFile logFile = life.add(new PhysicalLogFile(fileSystemAbstraction, logFiles, config.get(GraphDatabaseSettings.logical_log_rotation_threshold), transactionIdStore::getLastCommittedTransactionId, logVersionRepository, physicalLogMonitor, logHeaderCache));
    final PhysicalLogFileInformation.LogVersionToTimestamp logInformation = version -> {
        LogPosition position = LogPosition.start(version);
        try (ReadableLogChannel channel = logFile.getReader(position)) {
            LogEntry entry;
            while ((entry = logEntryReader.readLogEntry(channel)) != null) {
                if (entry instanceof LogEntryStart) {
                    return entry.<LogEntryStart>as().getTimeWritten();
                }
            }
        }
        return -1;
    };
    final LogFileInformation logFileInformation = new PhysicalLogFileInformation(logFiles, logHeaderCache, transactionIdStore::getLastCommittedTransactionId, logInformation);
    if (config.get(GraphDatabaseFacadeFactory.Configuration.ephemeral)) {
        config = config.withDefaults(stringMap(GraphDatabaseSettings.keep_logical_logs.name(), "1 files"));
    }
    String pruningConf = config.get(GraphDatabaseSettings.keep_logical_logs);
    LogPruneStrategy logPruneStrategy = fromConfigValue(fs, logFileInformation, logFiles, pruningConf);
    final LogPruning logPruning = new LogPruningImpl(logPruneStrategy, logProvider);
    final LogRotation logRotation = new LogRotationImpl(monitors.newMonitor(LogRotation.Monitor.class), logFile, databaseHealth);
    final TransactionAppender appender = life.add(new BatchingTransactionAppender(logFile, logRotation, transactionMetadataCache, transactionIdStore, legacyIndexTransactionOrdering, databaseHealth));
    final LogicalTransactionStore logicalTransactionStore = new PhysicalLogicalTransactionStore(logFile, transactionMetadataCache, logEntryReader);
    int txThreshold = config.get(GraphDatabaseSettings.check_point_interval_tx);
    final CountCommittedTransactionThreshold countCommittedTransactionThreshold = new CountCommittedTransactionThreshold(txThreshold);
    long timeMillisThreshold = config.get(GraphDatabaseSettings.check_point_interval_time);
    TimeCheckPointThreshold timeCheckPointThreshold = new TimeCheckPointThreshold(timeMillisThreshold, clock);
    CheckPointThreshold threshold = CheckPointThresholds.or(countCommittedTransactionThreshold, timeCheckPointThreshold);
    final CheckPointerImpl checkPointer = new CheckPointerImpl(transactionIdStore, threshold, storageEngine, logPruning, appender, databaseHealth, logProvider, tracers.checkPointTracer, ioLimiter, storeCopyCheckPointMutex);
    long recurringPeriod = Math.min(timeMillisThreshold, TimeUnit.SECONDS.toMillis(10));
    CheckPointScheduler checkPointScheduler = new CheckPointScheduler(checkPointer, scheduler, recurringPeriod, databaseHealth);
    life.add(checkPointer);
    life.add(checkPointScheduler);
    return new NeoStoreTransactionLogModule(logicalTransactionStore, logFileInformation, logFiles, logFile, logRotation, checkPointer, appender, legacyIndexTransactionOrdering);
}

Example 2 with LogRotation

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

the class TransactionLogAppendAndRotateIT method shouldKeepTransactionsIntactWhenConcurrentlyRotationAndAppending.

@Test
public void shouldKeepTransactionsIntactWhenConcurrentlyRotationAndAppending() throws Throwable {
    // GIVEN
    PhysicalLogFiles logFiles = new PhysicalLogFiles(directory.directory().getAbsoluteFile(), fileSystemRule.get());
    long rotationThreshold = mebiBytes(1);
    LogVersionRepository logVersionRepository = new DeadSimpleLogVersionRepository(0);
    final AtomicBoolean end = new AtomicBoolean();
    AllTheMonitoring monitoring = new AllTheMonitoring(end, 100);
    TransactionIdStore txIdStore = new DeadSimpleTransactionIdStore();
    TransactionMetadataCache metadataCache = new TransactionMetadataCache(100);
    LogHeaderCache logHeaderCache = new LogHeaderCache(10);
    LogFile logFile = life.add(new PhysicalLogFile(fileSystemRule.get(), logFiles, rotationThreshold, () -> txIdStore.getLastCommittedTransactionId(), logVersionRepository, monitoring, logHeaderCache));
    monitoring.setLogFile(logFile);
    DatabaseHealth health = new DatabaseHealth(mock(DatabasePanicEventGenerator.class), NullLog.getInstance());
    LogRotation rotation = new LogRotationImpl(monitoring, logFile, health);
    final TransactionAppender appender = life.add(new BatchingTransactionAppender(logFile, rotation, metadataCache, txIdStore, BYPASS, health));
    // WHEN
    Race race = new Race();
    for (int i = 0; i < 10; i++) {
        race.addContestant(new Runnable() {

            @Override
            public void run() {
                while (!end.get()) {
                    try {
                        appender.append(new TransactionToApply(sillyTransaction(1_000)), NULL);
                    } catch (Exception e) {
                        e.printStackTrace(System.out);
                        end.set(true);
                        fail(e.getMessage());
                    }
                }
            }
        });
    }
    race.addContestant(endAfterMax(10, SECONDS, end));
    race.go();
    // THEN
    assertTrue(monitoring.numberOfRotations() > 0);
}