public CommandConverter(
RestApplication application,
IObjectFactory objectFactory,
IProcessingEngine processingEngine,
IWireSerialization serialization)
{
this.Application = application;
this.ObjectFactory = objectFactory;
this.ProcessingEngine = processingEngine;
this.Serialization = serialization;
}
public Task PassThrough <TCommand, TArgument>(
TArgument argument,
string accept,
HttpContext contex,
AdditionalCommand[] additionalCommands,
string customContentType = null)
{
var request = contex.Request;
var response = contex.Response;
var start = Stopwatch.GetTimestamp();
var engine = ProcessingEngine;
StringValues headers;
if (request.Headers.TryGetValue("x-revenj-session-id", out headers) && headers.Count == 1)
{
var sessionID = headers[0];
var scope = ObjectFactory.FindScope(sessionID);
if (scope == null)
{
return(response.WriteError("Unknown session: " + sessionID, HttpStatusCode.BadRequest));
}
engine = scope.Resolve <IProcessingEngine>();
}
var commands = new ObjectCommandDescription[1 + (additionalCommands != null ? additionalCommands.Length : 0)];
commands[0] = new ObjectCommandDescription {
Data = argument, CommandType = typeof(TCommand)
};
for (int i = 1; i < commands.Length; i++)
{
var ac = additionalCommands[i - 1];
commands[i] = new ObjectCommandDescription {
RequestID = ac.ToHeader, CommandType = ac.CommandType, Data = ac.Argument
};
}
var task = RestApplication.ExecuteCommands <object>(engine, Serialization, commands, contex, accept);
return(task.ContinueWith(t =>
{
if (t.IsCompletedSuccessfully)
{
var elapsed = (decimal)(Stopwatch.GetTimestamp() - start) / TimeSpan.TicksPerMillisecond;
if (customContentType != null)
{
response.ContentType = customContentType;
}
response.Headers.Add("X-Duration", elapsed.ToString(CultureInfo.InvariantCulture));
var stream = t.Result;
var cms = stream as ChunkedMemoryStream;
if (cms != null)
{
cms.CopyTo(response.Body);
cms.Dispose();
}
else if (stream != null)
{
stream.CopyTo(response.Body);
stream.Dispose();
}
}
}));
}