public static IObservable <T> AttachWriter <T>(this IObservable <T> data, string path, IDataSerializationFactory factory, Type targetDataType, int bufferSize)
{
return(Observable.Create <T>(o =>
{
var streamWriter = new StreamWriter(path, true, new UTF8Encoding(false));
var dataWriter = factory.CreateWriterForType(streamWriter, targetDataType);
var bufferedWriter = new BufferedDataWriter(dataWriter, bufferSize);
return new CompositeDisposable
(
data.Do(d => bufferedWriter.Write(d))
.Finally(bufferedWriter.Close)
.Subscribe(o),
dataWriter,
streamWriter
);
}));
// removed this implementation due to exceptions being raised that the streamWriter was disposed sooner than the dataWriter.
//return Observable.Using
//(
// () => new StreamWriter(path, true, new UTF8Encoding(false)),
// streamWriter => Observable.Using
// (
// () => factory.CreateWriterForType(streamWriter, targetDataType),
// dataWriter => Observable.Using
// (
// () => new BufferedDataWriter(dataWriter, bufferSize),
// bufferedWriter => data.Do(d => bufferedWriter.Write(d))
// .Finally(bufferedWriter.Close)
// )
// )
//);
}
public IDisposable Connect(IObservableDevice device)
{
var writer = new InMemoryDataBufferWriter(device.DeviceType, _buffer, device.DataType);
var bufferedWriter = new BufferedDataWriter(writer, TimeSpan.FromMilliseconds(_configuration.BufferSize));
return(new CompositeDisposable
(
device.Data.Do(d => bufferedWriter.Write(d))
.Finally(bufferedWriter.Close)
.Subscribe(),
bufferedWriter,
writer
));
//return Observable.Using
//(
// () => new InMemoryDataBufferWriter(device.DeviceType, _buffer, device.RecordingDataType),
// writer => Observable.Using
// (
// () => new BufferedDataWriter(writer, TimeSpan.FromMilliseconds(_configuration.BufferSize)),
// bufferedWriter => device.Data.Do(d => bufferedWriter.Write(d))
// .Finally(bufferedWriter.Close)
// )
//).Subscribe();
}
