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

Example 21 with VersionAwareLogEntryReader

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

the class TestLogPruning method transactionCount.

private int transactionCount() throws IOException {
    return aggregateLogData(version -> {
        int counter = 0;
        LogVersionBridge bridge = LogVersionBridge.NO_MORE_CHANNELS;
        LogVersionedStoreChannel versionedStoreChannel = files.getLogFile().openForVersion(version);
        try (ReadableLogChannel channel = new ReadAheadLogChannel(versionedStoreChannel, bridge, INSTANCE)) {
            try (PhysicalTransactionCursor physicalTransactionCursor = new PhysicalTransactionCursor(channel, new VersionAwareLogEntryReader(db.getDependencyResolver().resolveDependency(StorageEngineFactory.class).commandReaderFactory()))) {
                while (physicalTransactionCursor.next()) {
                    counter++;
                }
            }
        }
        return counter;
    });
}

Example 22 with VersionAwareLogEntryReader

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

the class LogTestUtils method filterTransactionLogFile.

private static void filterTransactionLogFile(FileSystemAbstraction fileSystem, Path file, final LogHook<LogEntry> filter, ChannelNativeAccessor channelNativeAccessor) throws IOException {
    filter.file(file);
    try (StoreChannel in = fileSystem.read(file)) {
        LogHeader logHeader = readLogHeader(ByteBuffers.allocate(CURRENT_FORMAT_LOG_HEADER_SIZE, INSTANCE), in, true, file);
        assert logHeader != null : "Looks like we tried to read a log header of an empty pre-allocated file.";
        PhysicalLogVersionedStoreChannel inChannel = new PhysicalLogVersionedStoreChannel(in, logHeader.getLogVersion(), logHeader.getLogFormatVersion(), file, channelNativeAccessor);
        ReadableLogChannel inBuffer = new ReadAheadLogChannel(inChannel, INSTANCE);
        LogEntryReader entryReader = new VersionAwareLogEntryReader(new TestCommandReaderFactory());
        LogEntry entry;
        while ((entry = entryReader.readLogEntry(inBuffer)) != null) {
            filter.test(entry);
        }
    }
}

Example 23 with VersionAwareLogEntryReader

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

the class TransactionLogCatchUpWriterTest method verifyCheckpointInLog.

private void verifyCheckpointInLog() throws IOException {
    LogEntryReader<ReadableClosablePositionAwareChannel> logEntryReader = new VersionAwareLogEntryReader<>(new RecordStorageCommandReaderFactory());
    PhysicalLogFiles logFiles = new PhysicalLogFiles(storeDir, fs);
    final LatestCheckPointFinder checkPointFinder = new LatestCheckPointFinder(logFiles, fs, logEntryReader);
    LatestCheckPointFinder.LatestCheckPoint checkPoint = checkPointFinder.find(0);
    assertNotNull(checkPoint.checkPoint);
    assertTrue(checkPoint.commitsAfterCheckPoint);
}

Example 24 with VersionAwareLogEntryReader

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

the class RebuildFromLogs method findLastTransactionId.

private long findLastTransactionId(PhysicalLogFiles logFiles, long highestVersion) throws IOException {
    ReadableLogChannel logChannel = new ReadAheadLogChannel(PhysicalLogFile.openForVersion(logFiles, fs, highestVersion, false), NO_MORE_CHANNELS);
    long lastTransactionId = -1;
    LogEntryReader<ReadableClosablePositionAwareChannel> entryReader = new VersionAwareLogEntryReader<>();
    try (IOCursor<CommittedTransactionRepresentation> cursor = new PhysicalTransactionCursor<>(logChannel, entryReader)) {
        while (cursor.next()) {
            lastTransactionId = cursor.get().getCommitEntry().getTxId();
        }
    }
    return lastTransactionId;
}

Example 25 with VersionAwareLogEntryReader

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

the class MasterServerTest method shouldCleanExistentLockSessionOnFinishOffChannel.

@Test
public void shouldCleanExistentLockSessionOnFinishOffChannel() throws Exception {
    Master master = mock(Master.class);
    ConversationManager conversationManager = mock(ConversationManager.class);
    LogEntryReader<ReadableClosablePositionAwareChannel> logEntryReader = new VersionAwareLogEntryReader<>();
    MasterServer masterServer = new MasterServer(master, mock(LogProvider.class), mock(Server.Configuration.class), mock(TxChecksumVerifier.class), mock(ByteCounterMonitor.class), mock(RequestMonitor.class), conversationManager, logEntryReader);
    RequestContext requestContext = new RequestContext(1L, 1, 1, 0, 0L);
    masterServer.stopConversation(requestContext);
    Mockito.verify(conversationManager).stop(requestContext);
}