/// <summary>
/// Build a carrier cluster stream with the given keysequence and ordered streams
/// </summary>
/// <typeparam name="TCarrierClusterStream">Type of carrier cluster stream to generate</typeparam>
/// <param name="keySequence">IKeySequence instance</param>
/// <param name="orderedStreams">Ordered list of streams, used to generate stream segements</param>
/// <returns>New TCarrierClusterStream</returns>
public BaseCarrierClusterStream BuildClusterStream(string name, IKeySequence keySequence, IList <Stream> orderedStreams)
{
if (keySequence == null)
{
throw new ArgumentNullException("keySequence");
}
if (orderedStreams == null)
{
throw new ArgumentNullException("orderedStreams");
}
if (orderedStreams.Count == 0)
{
throw new ArgumentOutOfRangeException("orderedStreams", "orderedStreams cannot be empty");
}
if (!_carrierClusterStreamTypes.ContainsKey(name))
{
throw new InvalidOperationException(string.Format("CarrierClusterStream not found for Name {0}", name));
}
ExportFactory <BaseCarrierClusterStream, ICarrierClusterStreamMetadata> factory =
_carrierClusterStreamTypes[name];
BaseCarrierClusterStream result = factory.CreateExport().Value;
result.Initialize(keySequence, orderedStreams.Select(s => BuildCarrierStream(s)));
return(result);
}
/// <summary>
/// Initialize the cluster stream
/// </summary>
/// <param name="keySequence">Key sequence instance</param>
/// <param name="carrierStreams">Carrier streams to initialized with</param>
/// <remarks>
/// Key Step Lengths(KSL)
/// Key Step Length Size(KSLS)
/// Writable Carrier Stream Length(WCSL)
/// WCSL / Sum(KSL) * KSLS + WCSL % Sum(KSL) = Length
/// </remarks>
public override void Initialize(IKeySequence keySequence, IEnumerable <ICarrierStream> carrierStreams)
{
_keySequence = keySequence;
long currentStart = 0;
_carrierStreams = new ConcurrentBag <StreamSegment>(
carrierStreams.Select(cs =>
{
long closureCurrentStart = currentStart;
long end = closureCurrentStart + cs.Length - 1;
currentStart = end + 1;
return(new StreamSegment
{
Start = closureCurrentStart,
End = end,
CarrierStream = cs
});
}));
_canRead = _carrierStreams.All(s => s.CarrierStream.CanRead);
_canSeek = _carrierStreams.All(s => s.CarrierStream.CanSeek);
_canWrite = _carrierStreams.All(s => s.CarrierStream.CanWrite);
long carrierSumLength = _carrierStreams.Sum(s => s.CarrierStream.Length);
_maxLength = carrierSumLength / _keySequence.TotalStepSum * _keySequence.Length
+ carrierSumLength % _keySequence.TotalStepSum;
_length = _maxLength;
_logger.Info(h => h("Initialize: KeySequence Length: {0}, Stream Lengh = {1}",
_keySequence.Length, _length));
}
protected void GetSequenceTest(IKeySequence keySequence, int startAt, int count, IEnumerable <byte> expected)
{
IEnumerable <byte> results = keySequence.GetSequence(startAt, count);
Assert.IsNotNull(results);
Assert.AreEqual(count, results.Count());
Assert.AreEqual(expected, results);
}
protected void GetSequenceTest(IKeySequence keySequence, int startAt, int count, IEnumerable<byte> expected)
{
IEnumerable<byte> results = keySequence.GetSequence(startAt, count);
Assert.IsNotNull(results);
Assert.AreEqual(count, results.Count());
Assert.AreEqual(expected, results);
}
/// <summary> /// Initialize the cluster stream with key sequence instance and carrierStream list /// </summary> /// <param name="keySequence">Key sequence instance</param> /// <param name="carrierStreams">Carrier streams to initialized with</param> public abstract void Initialize(IKeySequence keySequence, System.Collections.Generic.IEnumerable <ICarrierStream> carrierStreams);
/// <summary>
/// Build a carrier cluster stream with the given keysequence and ordered streams
/// </summary>
/// <typeparam name="TCarrierClusterStream">Type of carrier cluster stream to generate</typeparam>
/// <param name="keySequence">IKeySequence instance</param>
/// <param name="orderedStreams">Ordered list of streams, used to generate stream segements</param>
/// <returns>New TCarrierClusterStream</returns>
public BaseCarrierClusterStream BuildClusterStream(string name, IKeySequence keySequence, IList<Stream> orderedStreams)
{
if (keySequence == null)
throw new ArgumentNullException("keySequence");
if (orderedStreams == null)
throw new ArgumentNullException("orderedStreams");
if (orderedStreams.Count == 0)
throw new ArgumentOutOfRangeException("orderedStreams", "orderedStreams cannot be empty");
if (!_carrierClusterStreamTypes.ContainsKey(name))
throw new InvalidOperationException(string.Format("CarrierClusterStream not found for Name {0}", name));
ExportFactory<BaseCarrierClusterStream, ICarrierClusterStreamMetadata> factory =
_carrierClusterStreamTypes[name];
BaseCarrierClusterStream result = factory.CreateExport().Value;
result.Initialize(keySequence, orderedStreams.Select(s => BuildCarrierStream(s)));
return result;
}
