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

Example 46 with PhysicalLogFiles

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

the class NeoStoreDataSourceTest method noLogs.

private PhysicalLogFiles noLogs() {
    PhysicalLogFiles files = mock(PhysicalLogFiles.class);
    when(files.getLowestLogVersion()).thenReturn(-1L);
    return files;
}

Example 47 with PhysicalLogFiles

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

the class CoreBootstrapper method appendNullTransactionLogEntryToSetRaftIndexToMinusOne.

private void appendNullTransactionLogEntryToSetRaftIndexToMinusOne() throws IOException {
    PhysicalLogFiles logFiles = new PhysicalLogFiles(storeDir, fs);
    ReadOnlyLogVersionRepository logVersionRepository = new ReadOnlyLogVersionRepository(pageCache, storeDir);
    ReadOnlyTransactionIdStore readOnlyTransactionIdStore = new ReadOnlyTransactionIdStore(pageCache, storeDir);
    PhysicalLogFile logFile = new PhysicalLogFile(fs, logFiles, Long.MAX_VALUE, /*don't rotate*/
    () -> readOnlyTransactionIdStore.getLastClosedTransactionId() - 1, logVersionRepository, new Monitors().newMonitor(PhysicalLogFile.Monitor.class), new LogHeaderCache(10));
    long dummyTransactionId;
    try (Lifespan lifespan = new Lifespan(logFile)) {
        FlushableChannel channel = logFile.getWriter();
        TransactionLogWriter writer = new TransactionLogWriter(new LogEntryWriter(channel));
        long lastCommittedTransactionId = readOnlyTransactionIdStore.getLastCommittedTransactionId();
        PhysicalTransactionRepresentation tx = new PhysicalTransactionRepresentation(Collections.emptyList());
        byte[] txHeaderBytes = LogIndexTxHeaderEncoding.encodeLogIndexAsTxHeader(-1);
        tx.setHeader(txHeaderBytes, -1, -1, -1, lastCommittedTransactionId, -1, -1);
        dummyTransactionId = lastCommittedTransactionId + 1;
        writer.append(tx, dummyTransactionId);
        channel.prepareForFlush().flush();
    }
    File neoStoreFile = new File(storeDir, MetaDataStore.DEFAULT_NAME);
    MetaDataStore.setRecord(pageCache, neoStoreFile, LAST_TRANSACTION_ID, dummyTransactionId);
}

Example 48 with PhysicalLogFiles

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

the class Runner method createPhysicalLogFile.

private PhysicalLogFile createPhysicalLogFile(TransactionIdStore transactionIdStore, LogHeaderCache logHeaderCache, FileSystemAbstraction fileSystemAbstraction) {
    PhysicalLogFiles logFiles = new PhysicalLogFiles(workingDirectory, fileSystemAbstraction);
    long rotateAtSize = Settings.BYTES.apply(GraphDatabaseSettings.logical_log_rotation_threshold.getDefaultValue());
    DeadSimpleLogVersionRepository logVersionRepository = new DeadSimpleLogVersionRepository(0);
    return new PhysicalLogFile(fileSystemAbstraction, logFiles, rotateAtSize, transactionIdStore::getLastCommittedTransactionId, logVersionRepository, PhysicalLogFile.NO_MONITOR, logHeaderCache);
}

Example 49 with PhysicalLogFiles

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

the class LogTestUtils method filterNeostoreLogicalLog.

public static File[] filterNeostoreLogicalLog(FileSystemAbstraction fileSystem, String storeDir, LogHook<LogEntry> filter) throws IOException {
    PhysicalLogFiles logFiles = new PhysicalLogFiles(new File(storeDir), fileSystem);
    final List<File> files = new ArrayList<>();
    logFiles.accept((file, logVersion) -> files.add(file));
    for (File file : files) {
        File filteredLog = filterNeostoreLogicalLog(fileSystem, file, filter);
        replace(filteredLog, file);
    }
    return files.toArray(new File[files.size()]);
}

Example 50 with PhysicalLogFiles

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

the class MigrationTestUtils method removeCheckPointFromTxLog.

public static void removeCheckPointFromTxLog(FileSystemAbstraction fileSystem, File workingDirectory) throws IOException {
    PhysicalLogFiles logFiles = new PhysicalLogFiles(workingDirectory, fileSystem);
    LogEntryReader<ReadableClosablePositionAwareChannel> logEntryReader = new VersionAwareLogEntryReader<>();
    LatestCheckPointFinder finder = new LatestCheckPointFinder(logFiles, fileSystem, logEntryReader);
    LatestCheckPointFinder.LatestCheckPoint latestCheckPoint = finder.find(logFiles.getHighestLogVersion());
    if (latestCheckPoint.commitsAfterCheckPoint) {
        // done already
        return;
    }
    // let's assume there is at least a checkpoint
    assertNotNull(latestCheckPoint.checkPoint);
    LogPosition logPosition = latestCheckPoint.checkPoint.getLogPosition();
    File logFile = logFiles.getLogFileForVersion(logPosition.getLogVersion());
    fileSystem.truncate(logFile, logPosition.getByteOffset());
}