private async void DispatchRequest(InMemFrame payload,
InMemFrameQueue queue)
{
var receiveContext = new SimpleInMemReceiveContext(connection);
var headers = payload.headers;
var layerData = payload.layerData;
var message = payload.message;
var taskSource = payload.outstandingRequest;
ILayerStack layerStack;
Error layerError = this.serviceHost.ParentTransport.GetLayerStack(out layerStack);
if (layerError == null)
{
layerError = LayerStackUtils.ProcessOnReceive(layerStack, MessageType.Request, receiveContext, layerData, logger);
}
IMessage response;
if (layerError == null)
{
response = await serviceHost.DispatchRequest(headers.method_name, receiveContext, message, connection.ConnectionMetrics);
}
else
{
logger.Site().Error("Receiving request {0}/{1} failed due to layer error (Code: {2}, Message: {3}).",
headers.conversation_id, headers.method_name, layerError.error_code, layerError.message);
// Set layer error as result of this Bond method call and do not dispatch to method.
// Since this error will be returned to client, cleanse out internal server error details, if any.
response = Message.FromError(Errors.CleanseInternalServerError(layerError));
}
SendReply(headers.conversation_id, response, taskSource, layerStack, queue);
}
private async void DispatchRequest(InMemFrame payload,
InMemFrameQueue queue)
{
var requestMetrics = Metrics.StartRequestMetrics(connection.ConnectionMetrics);
var receiveContext = new SimpleInMemReceiveContext(connection, connection.ConnectionMetrics, requestMetrics);
var headers = payload.headers;
var layerData = payload.layerData;
var message = payload.message;
var taskSource = payload.outstandingRequest;
ILayerStack layerStack;
Error layerError = transport.GetLayerStack(requestMetrics.request_id, out layerStack);
if (layerError == null)
{
layerError = LayerStackUtils.ProcessOnReceive(layerStack, MessageType.REQUEST, receiveContext, layerData, logger);
}
IMessage response;
if (layerError == null)
{
response = await serviceHost.DispatchRequest(headers.service_name, headers.method_name, receiveContext, message);
}
else
{
logger.Site().Error("Receiving request {0}/{1}.{2} failed due to layer error (Code: {3}, Message: {4}).",
headers.conversation_id, headers.service_name, headers.method_name, layerError.error_code, layerError.message);
// Set layer error as result of this Bond method call and do not dispatch to method.
// Since this error will be returned to client, cleanse out internal server error details, if any.
response = Message.FromError(Errors.CleanseInternalServerError(layerError));
}
SendReply(headers.conversation_id, response, taskSource, layerStack, queue);
}
internal void SendReply(ulong conversationId,
IMessage response,
TaskCompletionSource <IMessage> taskSource,
ILayerStack layerStack,
InMemFrameQueue queue)
{
var requestMetrics = Metrics.StartRequestMetrics(connection.ConnectionMetrics);
var sendContext = new SimpleInMemSendContext(connection, connection.ConnectionMetrics, requestMetrics);
IBonded layerData = null;
Error layerError = LayerStackUtils.ProcessOnSend(layerStack, MessageType.RESPONSE, sendContext, out layerData, logger);
// If there was a layer error, replace the response with the layer error
if (layerError != null)
{
logger.Site().Error("Sending reply for conversation {0} failed due to layer error (Code: {1}, Message: {2}).",
conversationId, layerError.error_code, layerError.message);
// Set layer error as result of this Bond method call, replacing original response.
// Since this error will be returned to client, cleanse out internal server error details, if any.
response = Message.FromError(Errors.CleanseInternalServerError(layerError));
}
var payload = Util.NewPayLoad(conversationId, SimpleInMemMessageType.RESPONSE, layerData, response, taskSource);
queue.Enqueue(payload);
}
/// <summary>
/// A batch of <see cref="InMemFrame"/> instances are processed in each execution. They are dequeued from
/// <see cref="SimpleInMemConnection.ReadQueue"/>. Single batch size is minimum of
/// <see cref="MAXIMUM_BATCH_SIZE"/> and size of <see cref="SimpleInMemConnection.ReadQueue"/>.
/// </summary>
override internal void Process()
{
int batchIndex = 0;
InMemFrameQueue readQueue = connection.ReadQueue;
InMemFrameQueue writeQueue = connection.WriteQueue;
if (readQueue == null || writeQueue == null)
{
return;
}
while (batchIndex < MAXIMUM_BATCH_SIZE && readQueue.Count > 0)
{
var payload = readQueue.Dequeue();
if (payload == null)
{
break;
}
switch (payload.headers.message_type)
{
case SimpleInMemMessageType.EVENT:
Task.Run(() => DispatchEvent(payload));
break;
case SimpleInMemMessageType.REQUEST:
Task.Run(() => DispatchRequest(payload, writeQueue));
break;
case SimpleInMemMessageType.RESPONSE:
Task.Run(() => DispatchResponse(payload));
break;
default:
logger.Site().Error("Unsupported message type: [{0}], for conversation id: {1}.",
payload.headers.message_type, payload.headers.conversation_id);
break;
}
batchIndex++;
}
}
internal void SendReply(ulong conversationId,
IMessage response,
TaskCompletionSource<IMessage> taskSource,
ILayerStack layerStack,
InMemFrameQueue queue)
{
var sendContext = new SimpleInMemSendContext(connection);
IBonded layerData = null;
Error layerError = LayerStackUtils.ProcessOnSend(layerStack, MessageType.Response, sendContext, out layerData, logger);
// If there was a layer error, replace the response with the layer error
if (layerError != null)
{
logger.Site().Error("Sending reply for conversation {0} failed due to layer error (Code: {1}, Message: {2}).",
conversationId, layerError.error_code, layerError.message);
// Set layer error as result of this Bond method call, replacing original response.
// Since this error will be returned to client, cleanse out internal server error details, if any.
response = Message.FromError(Errors.CleanseInternalServerError(layerError));
}
var payload = Util.NewPayLoad(conversationId, PayloadType.Response, layerData, response, taskSource);
queue.Enqueue(payload);
}