public JournalOffsetManager(JournalConfiguration journalConfiguration)
{
_journalLengthInBytes = journalConfiguration.LengthInBytes;
CurrentJournalIndex = 0;
NextJournalEntryOffset = 0;
}
public Journal(JournalConfiguration journalConfiguration, IJournalFileWriter journalFileWriter, JournalOffsetManager journalOffsetManager, IList <ITransformJournalEntry> entryTransformers)
{
_journalConfiguration = journalConfiguration;
_journalFileWriter = journalFileWriter;
_journalOffsetManager = journalOffsetManager;
_entryTransformers = entryTransformers;
_journalFileWriter.SetJournal(_journalOffsetManager.CurrentJournalIndex, _journalOffsetManager.NextJournalEntryOffset);
}
public IWriteDataBlocks CreateJournaler(JournalConfiguration configuration)
{
var fileWriter = configuration.IoType == IoType.Buffered
? (IJournalFileWriter) new BufferedJournalFileWriter(configuration)
: new UnbufferedJournalFileWriter(configuration);
var offsetManager = new JournalOffsetManager(configuration);
var transformers = new List <ITransformJournalEntry>
{
new AddJournalMetadata()
};
if (configuration.IoType == IoType.Unbuffered)
{
transformers.Add(new PadToAlignToSector(configuration));
}
return(new Journal(configuration, fileWriter, offsetManager, transformers));
}