private ICommand ReadCommandFrom(PresentationContextInputStream stream)
{
var input = new BufferedStreamReader(stream);
var command = CommandSerialization.ReadFrom(input);
if (command is IMayHaveDataSet mayHaveDataSet)
{
if (command.IsFollowedByDataSet())
{
_pendingCommand = command;
_pendingPresentationContext = stream.PresentationContextID;
}
else if (mayHaveDataSet.IsDataSetRequired())
{
throw new IOException($"{command} must be followed by a data set");
}
}
else if (command.IsFollowedByDataSet())
{
throw new IOException($"Unexpected data set received for command {command}");
}
stream.SkipToEnd();
if (TraceWriter != null)
{
NetUtils.TraceOutput(TraceWriter, $"PC {stream.PresentationContextID} received ", command);
}
return(command);
}
public void CreateCommandAdapterTest()
{
string aggregateId = "Box";
string aggregateType = typeof(Location).FullName;
string commandId = Guid.NewGuid().ToString();
string correlationId = commandId;
CreateLocation createLocationCommand = new CreateLocation(aggregateId);
string jsonCommand = new CommandSerialization().SerializeCommand(createLocationCommand);
var commandAdapter = new CommandSerialization().DeserializeCommand(commandId, correlationId, aggregateId, jsonCommand);
Assert.IsInstanceOfType(commandAdapter, typeof(ICommand));
Assert.IsInstanceOfType(commandAdapter, typeof(ICommand <CreateLocation>));
}
public void SendCommand(byte presentationContextID, ICommand command, Action <Stream> dataSetWriter)
{
if (command is IMayHaveDataSet mayHaveDataSet)
{
if ((dataSetWriter == null) && mayHaveDataSet.IsDataSetRequired())
{
throw new ArgumentException($"{command} must be followed by a data set");
}
}
else if (dataSetWriter != null)
{
throw new ArgumentException($"{command} must not be followed by a data set");
}
var commandAttribute = command.GetType().GetCustomAttribute <CommandAttribute>();
command.CommandField = commandAttribute.CommandType;
command.CommandDataSetType = (ushort)((dataSetWriter == null) ? 0x0101 : 0xFEFE);
if (TraceWriter != null)
{
NetUtils.TraceOutput(TraceWriter, $"PC {presentationContextID} sending ", command);
}
using (var stream = new PresentationContextOutputStream(this, presentationContextID, FragmentType.Command))
{
var output = new BufferedStreamWriter(stream);
CommandSerialization.WriteTo(output, command);
output.Flush(FlushMode.Deep);
}
if (dataSetWriter != null)
{
using (var stream = new PresentationContextOutputStream(this, presentationContextID, FragmentType.DataSet))
{
dataSetWriter.Invoke(stream);
stream.Flush();
}
}
}
