/// <summary>
/// Overrides the default Stream lifecycle implementation. See interface definitions for more details.
/// </summary>
/// <param name="writeStreamFactory">Creates sequentially writable Streams. These Streams won't last long, so the primary
/// concern will be that they should be fast. This will be invoked on the thread(s) writing to the rolling memory.</param>
/// <param name="writeStreamToReadStreamConverter">Converts Streams created by writeStreamFactory to sequentially readable
/// Streams. Ordinarily data will sit in these Streams between being written and being read, so an underlying storage
/// medium which can buffer the expected amount of data is preferable. This will ordinarily be invoked on the thread(s)
/// reading from the rolling memory, although it may be invoked during writing if clearing space becomes an immediate
/// requirement.</param>
/// <param name="writeStreamDataSourceDisposerFactory">Creates IDataSourceDisposers for Streams created by
/// writeStreamFactory.</param>
/// <param name="readStreamDataSourceDisposerFactory">Creates IDataSourceDisposers for Streams returned by
/// IWriteStreamToReadStreamConverter.</param>
/// <returns></returns>
public RollingMemoryBuilder SetupStreamLifecycleImplementation(
IWriteStreamFactory writeStreamFactory, IWriteStreamToReadStreamConverter writeStreamToReadStreamConverter,
IStreamDataSourceDisposerFactory writeStreamDataSourceDisposerFactory, IStreamDataSourceDisposerFactory readStreamDataSourceDisposerFactory)
{
if (writeStreamFactory == null)
throw new ArgumentNullException("writeStreamFactory");
if (writeStreamToReadStreamConverter == null)
throw new ArgumentNullException("writeStreamToReadStreamConverter");
if (writeStreamDataSourceDisposerFactory == null)
throw new ArgumentNullException("writeStreamDataSourceDisposerFactory");
if (readStreamDataSourceDisposerFactory == null)
throw new ArgumentNullException("readStreamDataSourceDisposerFactory");
_writeStreamFactory = new Lazy<IWriteStreamFactory>(() => writeStreamFactory, true);
_writeStreamToReadStreamConverter = new Lazy<IWriteStreamToReadStreamConverter>(() => writeStreamToReadStreamConverter, true);
_writeStreamDataSourceDisposerFactory = new Lazy<IStreamDataSourceDisposerFactory>(() => writeStreamDataSourceDisposerFactory, true);
_readStreamDataSourceDisposerFactory = new Lazy<IStreamDataSourceDisposerFactory>(() => readStreamDataSourceDisposerFactory, true);
return this;
}
public RollingMemory(
IWriteStreamFactory writeStreamFactory,
IWriteStreamToReadStreamConverter writeStreamToReadStreamConverter,
IStreamDataSourceDisposerFactory writeStreamDataSourceDisposerFactory,
IStreamDataSourceDisposerFactory readStreamDataSourceDisposerFactory,
IRollingMemoryStateMonitor rollingMemoryStateMonitor,
long? maximumAllowedWriteStreamBytes, TimeSpan? maximumAllowedUnavailableAge,
long? maximumAllowedUnavailableBytes, ICurrentDateTimeSource currentDateTimeSource)
{
var readStreamQueue = new ReadStreamQueue();
var dataSourceDisposerRegister = new DataSourceDisposerRegister();
var completedWriteStreamBuffer = new CompletedWriteStreamBuffer(
readStreamQueue,
writeStreamToReadStreamConverter,
readStreamDataSourceDisposerFactory,
dataSourceDisposerRegister,
maximumAllowedWriteStreamBytes);
var rollingMemoryWriteStream = new RollingMemoryWriteStream(
writeStreamFactory,
completedWriteStreamBuffer,
completedWriteStreamBuffer,
currentDateTimeSource,
writeStreamDataSourceDisposerFactory,
dataSourceDisposerRegister,
rollingMemoryStateMonitor);
var readStreamQueueRefresher = new ReadStreamQueueRefresher(
rollingMemoryWriteStream,
completedWriteStreamBuffer,
maximumAllowedUnavailableAge,
maximumAllowedUnavailableBytes);
var completedReadStreamHandler = new CompletedReadStreamHandler(
dataSourceDisposerRegister);
var rollingMemoryReadStream = new RollingMemoryReadStream(
readStreamQueue,
readStreamQueueRefresher,
completedReadStreamHandler,
rollingMemoryStateMonitor);
_readStream = rollingMemoryReadStream;
_writeStream = rollingMemoryWriteStream;
_completedWriteStreamBuffer = completedWriteStreamBuffer;
}
public RollingMemoryWriteStream(IWriteStreamFactory targetFactory,
ICompletedWriteStreamHandler completedWriteStreamHandler,
IWriteStreamLengthValidator activeWriteStreamLengthValidator,
ICurrentDateTimeSource currentDateTimeSource,
IStreamDataSourceDisposerFactory writeStreamDataSourceDisposerFactory,
IDataSourceDisposerRegister dataSourceDisposerRegister,
IRollingMemoryStateMonitor rollingMemoryStateMonitor)
{
_targetFactory = targetFactory;
_completedWriteStreamHandler = completedWriteStreamHandler;
_activeWriteStreamLengthValidator = activeWriteStreamLengthValidator;
_currentDateTimeSource = currentDateTimeSource;
_writeStreamDataSourceDisposerFactory = writeStreamDataSourceDisposerFactory;
_dataSourceDisposerRegister = dataSourceDisposerRegister;
_rollingMemoryStateMonitor = rollingMemoryStateMonitor;
}
