//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldReadALogHeaderFromAByteChannel() throws java.io.IOException
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldReadALogHeaderFromAByteChannel()
{
// given
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final ByteBuffer buffer = ByteBuffer.allocate(LOG_HEADER_SIZE);
ByteBuffer buffer = ByteBuffer.allocate(LOG_HEADER_SIZE);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.nio.channels.ReadableByteChannel channel = mock(java.nio.channels.ReadableByteChannel.class);
ReadableByteChannel channel = mock(typeof(ReadableByteChannel));
when(channel.read(buffer)).thenAnswer(invocation =>
{
buffer.putLong(encodeLogVersion(_expectedLogVersion));
buffer.putLong(_expectedTxId);
return(8 + 8);
});
// when
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final LogHeader result = readLogHeader(buffer, channel, true, null);
LogHeader result = readLogHeader(buffer, channel, true, null);
// then
assertEquals(new LogHeader(CURRENT_LOG_VERSION, _expectedLogVersion, _expectedTxId), result);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldReadALogHeaderFromAFile() throws java.io.IOException
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldReadALogHeaderFromAFile()
{
// given
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.io.File file = testDirectory.file("ReadLogHeader");
File file = TestDirectory.file("ReadLogHeader");
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final ByteBuffer buffer = ByteBuffer.allocate(LOG_HEADER_SIZE);
ByteBuffer buffer = ByteBuffer.allocate(LOG_HEADER_SIZE);
buffer.putLong(encodeLogVersion(_expectedLogVersion));
buffer.putLong(_expectedTxId);
using (Stream stream = FileSystemRule.get().openAsOutputStream(file, false))
{
stream.WriteByte(buffer.array());
}
// when
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final LogHeader result = readLogHeader(fileSystemRule.get(), file);
LogHeader result = readLogHeader(FileSystemRule.get(), file);
// then
assertEquals(new LogHeader(CURRENT_LOG_VERSION, _expectedLogVersion, _expectedTxId), result);
}
/// <summary>
/// Opens a file in given {@code fileSystem} as a <seealso cref="LogVersionedStoreChannel"/>.
/// </summary>
/// <param name="fileSystem"> <seealso cref="FileSystemAbstraction"/> containing the file to open. </param>
/// <param name="file"> file to open as a channel. </param>
/// <returns> <seealso cref="LogVersionedStoreChannel"/> for the file. Its version is determined by its log header. </returns>
/// <exception cref="IOException"> on I/O error. </exception>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public static org.neo4j.kernel.impl.transaction.log.PhysicalLogVersionedStoreChannel openVersionedChannel(org.neo4j.io.fs.FileSystemAbstraction fileSystem, java.io.File file) throws java.io.IOException
public static PhysicalLogVersionedStoreChannel OpenVersionedChannel(FileSystemAbstraction fileSystem, File file)
{
StoreChannel fileChannel = fileSystem.Open(file, OpenMode.READ);
LogHeader logHeader = readLogHeader(ByteBuffer.allocate(LOG_HEADER_SIZE), fileChannel, true, file);
PhysicalLogVersionedStoreChannel channel = new PhysicalLogVersionedStoreChannel(fileChannel, logHeader.LogVersion, logHeader.LogFormatVersion);
return(channel);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: static void filterTransactionLogFile(org.neo4j.io.fs.FileSystemAbstraction fileSystem, java.io.File file, final LogHook<org.neo4j.kernel.impl.transaction.log.entry.LogEntry> filter) throws java.io.IOException
//JAVA TO C# CONVERTER WARNING: 'final' parameters are ignored unless the option to convert to C# 7.2 'in' parameters is selected:
internal static void FilterTransactionLogFile(FileSystemAbstraction fileSystem, File file, LogHook <LogEntry> filter)
{
filter.File(file);
using (StoreChannel @in = fileSystem.Open(file, OpenMode.READ))
{
LogHeader logHeader = readLogHeader(ByteBuffer.allocate(LOG_HEADER_SIZE), @in, true, file);
PhysicalLogVersionedStoreChannel inChannel = new PhysicalLogVersionedStoreChannel(@in, logHeader.LogVersion, logHeader.LogFormatVersion);
ReadableLogChannel inBuffer = new ReadAheadLogChannel(inChannel);
LogEntryReader <ReadableLogChannel> entryReader = new VersionAwareLogEntryReader <ReadableLogChannel>();
LogEntry entry;
while ((entry = entryReader.ReadLogEntry(inBuffer)) != null)
{
filter.test(entry);
}
}
}
