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

Example 71 with LogPosition

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

the class PositionToRecoverFromTest method shouldRecoverFromStartOfLogZeroIfThereAreNoCheckPointAndOldestLogIsVersionZero.

@Test
public void shouldRecoverFromStartOfLogZeroIfThereAreNoCheckPointAndOldestLogIsVersionZero() throws Throwable {
    // given
    when(finder.find(logVersion)).thenReturn(new LatestCheckPoint(null, true, 10L, INITIAL_LOG_VERSION));
    // when
    LogPosition logPosition = new PositionToRecoverFrom(finder, monitor).apply(logVersion);
    // then
    verify(monitor).noCheckPointFound();
    assertEquals(LogPosition.start(INITIAL_LOG_VERSION), logPosition);
}

Example 72 with LogPosition

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

the class PositionToRecoverFromTest method shouldReturnLogPositionToRecoverFromIfNeeded.

@Test
public void shouldReturnLogPositionToRecoverFromIfNeeded() throws Throwable {
    // given
    LogPosition checkPointLogPosition = new LogPosition(1L, 4242);
    when(finder.find(logVersion)).thenReturn(new LatestCheckPoint(new CheckPoint(checkPointLogPosition), true, 10L, logVersion));
    // when
    LogPosition logPosition = new PositionToRecoverFrom(finder, monitor).apply(logVersion);
    // then
    verify(monitor).commitsAfterLastCheckPoint(checkPointLogPosition, 10L);
    assertEquals(checkPointLogPosition, logPosition);
}

Example 73 with LogPosition

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

the class StoreMigratorTest method writeAndReadLastTxLogPosition.

@Test
public void writeAndReadLastTxLogPosition() throws IOException {
    StoreMigrator migrator = newStoreMigrator();
    LogPosition writtenLogPosition = new LogPosition(random.nextLong(), random.nextLong());
    migrator.writeLastTxLogPosition(directory.graphDbDir(), writtenLogPosition);
    LogPosition readLogPosition = migrator.readLastTxLogPosition(directory.graphDbDir());
    assertEquals(writtenLogPosition, readLogPosition);
}

Example 74 with LogPosition

use of org.neo4j.kernel.impl.transaction.log.LogPosition 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());
}

Example 75 with LogPosition

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

the class LogPositionMarkerTest method shouldReturnUnspecifiedIfNothingHasBeenMarked.

@Test
void shouldReturnUnspecifiedIfNothingHasBeenMarked() {
    // given
    final LogPositionMarker marker = new LogPositionMarker();
    // when
    final LogPosition logPosition = marker.newPosition();
    // given
    assertEquals(LogPosition.UNSPECIFIED, logPosition);
}