private async Task ForwardRequestToDispatcher(string requestId, HttpRequestMessageWrapperEx request, string dispatcherChannel)
{
Console.WriteLine($"srrs:Sending request to dispatcher [{dispatcherChannel}] [{requestId}].");
var dispatcherConnectionId = GetDispatcherConnectionId(dispatcherChannel);
await Clients.Client(dispatcherConnectionId).SendAsync("dispatch", request);
return;
}
//public async Task<object> ProcessProxyRequestAsync(string proxyChannel, object req)
public async Task <HttpResponseMessageWrapperEx> ProcessProxyRequestAsync(HttpRequestMessageWrapperEx request)
{
var proxyChannel = request.GetSourceChannel();
var requestId = request.GetRequestId();
var connectionId = Context.ConnectionId;
ProxyRequests.AddOrUpdate(requestId, connectionId, (key, val) => { return(val); });
Console.WriteLine($"srrs:Proxy [{proxyChannel}] connected and request [{requestId}] received.");
if (_cts.IsCancellationRequested)
{
return(null);
}
var dispatcherChannel = ServiceTypesUtil.GetProxyServiceName(proxyChannel);
Console.WriteLine($"srrs:Sending request to dispatcher [{dispatcherChannel}] [{requestId}].");
var dispatcherConnectionId = GetDispatcherConnectionId(dispatcherChannel);
await Clients.Client(dispatcherConnectionId).SendAsync("dispatch", request);
if (_cts.IsCancellationRequested)
{
return(null);
}
Console.WriteLine($"srrs:Awaiting response from dispatcher [{dispatcherChannel}].");
HttpResponseMessageWrapperEx response = null;
while (true)
{
if (_cts.IsCancellationRequested)
{
return(null);
}
Task.Delay(100).Wait();
if (DispatcherResponses.TryRemove(requestId, out response))
{
break;
}
}
return(response);
}
public async Task <HttpResponseMessageWrapperEx> ProcessProxyRequestAsync(HttpRequestMessageWrapperEx request)
{
var requestId = request.GetRequestId();
var proxyChannel = request.GetSourceChannel();
var dispatcherChannel = ServiceTypesUtil.GetProxyServiceName(proxyChannel); // simpleton routing
Console.WriteLine($"srrs:Request [{requestId}] received on proxy channel [{proxyChannel}].");
ProxyRequests.AddOrUpdate(requestId, Context.ConnectionId, (key, val) => { return(val); });
if (_cts.IsCancellationRequested)
{
return(null);
}
await ForwardRequestToDispatcher(requestId, request, dispatcherChannel);
if (_cts.IsCancellationRequested)
{
return(null);
}
var response = await AwaitResponseFromDispatcher(requestId, dispatcherChannel);
return(response);
}
