private IEnumerable <Tuple <T, StreamSequenceToken> > SerializeExternalEvents <T>(EventSequenceTokenV2 sequenceToken)
{
var serializedEvents = _events
.Select((@event, iteration) =>
{
try
{
T message;
var messageType = typeof(T);
if (messageType.IsPrimitive || messageType == typeof(string) || messageType == typeof(decimal))
{
message = (T)Convert.ChangeType(@event, typeof(T));
}
else
{
message = JsonConvert
.DeserializeObject <T>((string)@event); // todo: support for multiple serializer
}
return(Tuple.Create <T, StreamSequenceToken>(message, sequenceToken.CreateSequenceTokenForEvent(iteration)));
}
catch (Exception)
{
return(null);
}
})
.Where(@event => @event != null);
return(serializedEvents);
}
private Tuple <T, StreamSequenceToken> DeserializeExternalEvent <T>(
EventSequenceTokenV2 sequenceToken,
object @event,
int iteration
)
{
T message;
var messageType = typeof(T);
if (messageType == typeof(byte[]))
{
message = (T)@event;
}
else if (messageType.IsPrimitive || messageType == typeof(string) || messageType == typeof(decimal))
{
message = (T)Convert.ChangeType(@event, typeof(T));
}
else
{
message = _deserializer.Deserialize <T>(_queueProps, (byte[])@event);
}
return(Tuple.Create <T, StreamSequenceToken>(message, sequenceToken.CreateSequenceTokenForEvent(iteration)));
}
public IEnumerable <Tuple <T, StreamSequenceToken> > GetEvents <T>()
{
return(events.OfType <T>().Select((e, i) => Tuple.Create <T, StreamSequenceToken>(e, sequenceToken.CreateSequenceTokenForEvent(i))));
}