/// <summary>
/// Deserializes a <see cref="Change"/> from the given byte array.
/// </summary>
/// <param name="serializedChange">Byte array containing a serialized change</param>
/// <param name="factory">The <see cref="AbstractPersistedDataFactory"/> that must be associated with the deserialized change list</param>
/// <returns>A <see cref="ChangeList"/></returns>
private static ChangeList.Change Deserialize(byte[] serializedChange, AbstractPersistedDataFactory factory)
{
MemoryStream memoryStream = new MemoryStream(serializedChange);
try
{
using (var binaryReader = new BinaryReader(memoryStream))
{
memoryStream = null;
ChangeList.ChangeType changeType = (ChangeList.ChangeType)binaryReader.ReadInt32();
PersistedData data = new PersistedData(0);
data.ReadFrom(binaryReader);
return(new ChangeList.Change(changeType, data));
}
}
finally
{
if (memoryStream != null)
{
memoryStream.Dispose();
}
}
}
/// <summary>
/// Deserializes a <see cref="WinFabPersistence.PersistedData"/> from the given <see cref="BinaryReader"/>.
/// </summary>
/// <param name="binaryReader">The <see cref="BinaryReader"/> to deserialize from</param>
/// <returns>The deserialized <see cref="WinFabPersistence.PersistedData"/></returns>
public WinFabPersistence.PersistedData Read(BinaryReader binaryReader)
{
if (binaryReader == null)
{
throw new ArgumentNullException(nameof(binaryReader));
}
var pd = new PersistedData(0);
pd.ReadFrom(binaryReader);
ServiceFabricPersistenceEventSource.Log.PersistedDataSerializer_Read(pd.Id, pd.Name);
return(new WinFabPersistence.PersistedData(pd));
}
/// <summary>
/// Enumerates the stream and returns a collection of persisted data
/// </summary>
/// <param name="stream">Stream to read</param>
/// <returns>collection of persisted data object</returns>
public IEnumerable <PersistedData> EnumerateFrom(Stream stream)
{
InMemoryPersistenceEventSource.Log.LoadFromStream();
using (var binaryReader = new BinaryReader(stream))
{
ulong itemCount = binaryReader.ReadUInt64();
for (ulong i = 0; i < itemCount; i++)
{
PersistedData data = new PersistedData(0);
data.ReadFrom(binaryReader);
yield return(data);
}
}
}