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

Example 11 with PhysicalLogVersionedStoreChannel

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

the class LogTestUtils method filterNeostoreLogicalLog.

public static File filterNeostoreLogicalLog(FileSystemAbstraction fileSystem, File file, final LogHook<LogEntry> filter) throws IOException {
    filter.file(file);
    File tempFile = new File(file.getAbsolutePath() + ".tmp");
    fileSystem.deleteFile(tempFile);
    try (StoreChannel in = fileSystem.open(file, "r");
        StoreChannel out = fileSystem.open(tempFile, "rw")) {
        LogHeader logHeader = transferLogicalLogHeader(in, out, ByteBuffer.allocate(LOG_HEADER_SIZE));
        PhysicalLogVersionedStoreChannel outChannel = new PhysicalLogVersionedStoreChannel(out, logHeader.logVersion, logHeader.logFormatVersion);
        PhysicalLogVersionedStoreChannel inChannel = new PhysicalLogVersionedStoreChannel(in, logHeader.logVersion, logHeader.logFormatVersion);
        ReadableLogChannel inBuffer = new ReadAheadLogChannel(inChannel, LogVersionBridge.NO_MORE_CHANNELS);
        LogEntryReader<ReadableLogChannel> entryReader = new VersionAwareLogEntryReader<>();
        LogEntry entry;
        while ((entry = entryReader.readLogEntry(inBuffer)) != null) {
            if (filter.test(entry)) {
            // TODO allright, write to outBuffer
            }
        }
    }
    return tempFile;
}

Example 12 with PhysicalLogVersionedStoreChannel

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

the class ReaderLogVersionBridgeTest method shouldOpenTheNextChannelWhenItExists.

@Test
public void shouldOpenTheNextChannelWhenItExists() throws IOException {
    // given
    final StoreChannel newStoreChannel = mock(StoreChannel.class);
    final ReaderLogVersionBridge bridge = new ReaderLogVersionBridge(fs, logFiles);
    when(channel.getVersion()).thenReturn(version);
    when(channel.getLogFormatVersion()).thenReturn(CURRENT_LOG_VERSION);
    when(logFiles.getLogFileForVersion(version + 1)).thenReturn(file);
    when(fs.fileExists(file)).thenReturn(true);
    when(fs.open(file, "r")).thenReturn(newStoreChannel);
    when(newStoreChannel.read(Matchers.<ByteBuffer>any())).then(new Answer<Integer>() {

        @Override
        public Integer answer(InvocationOnMock invocationOnMock) throws Throwable {
            ByteBuffer buffer = (ByteBuffer) invocationOnMock.getArguments()[0];
            buffer.putLong(encodeLogVersion(version + 1));
            buffer.putLong(42);
            return LOG_HEADER_SIZE;
        }
    });
    // when
    final LogVersionedStoreChannel result = bridge.next(channel);
    // then
    PhysicalLogVersionedStoreChannel expected = new PhysicalLogVersionedStoreChannel(newStoreChannel, version + 1, CURRENT_LOG_VERSION);
    assertEquals(expected, result);
    verify(channel, times(1)).close();
}