private IHandleRequestsAsync <TRequest> BuildAsyncPipeline(RequestHandlerAsync <TRequest> implicitHandler, IRequestContext requestContext, bool continueOnCapturedContext)
{
if (implicitHandler is null)
{
throw new ArgumentNullException(nameof(implicitHandler));
}
implicitHandler.Context = requestContext;
implicitHandler.ContinueOnCapturedContext = continueOnCapturedContext;
if (!_preAttributesMemento.TryGetValue(implicitHandler.Name.ToString(), out IOrderedEnumerable <RequestHandlerAttribute> preAttributes))
{
preAttributes =
implicitHandler.FindHandlerMethod()
.GetOtherHandlersInPipeline()
.Where(attribute => attribute.Timing == HandlerTiming.Before)
.OrderByDescending(attribute => attribute.Step);
AddGlobalInboxAttributesAsync(ref preAttributes, implicitHandler);
_preAttributesMemento.TryAdd(implicitHandler.Name.ToString(), preAttributes);
}
AddGlobalInboxAttributesAsync(ref preAttributes, implicitHandler);
var firstInPipeline = PushOntoAsyncPipeline(preAttributes, implicitHandler, requestContext, continueOnCapturedContext);
if (!_postAttributesMemento.TryGetValue(implicitHandler.Name.ToString(), out IOrderedEnumerable <RequestHandlerAttribute> postAttributes))
{
postAttributes =
implicitHandler.FindHandlerMethod()
.GetOtherHandlersInPipeline()
.Where(attribute => attribute.Timing == HandlerTiming.After)
.OrderByDescending(attribute => attribute.Step);
}
AppendToAsyncPipeline(postAttributes, implicitHandler, requestContext);
s_logger.LogDebug("New async handler pipeline created: {0}", TracePipeline(firstInPipeline));
return(firstInPipeline);
}
private IHandleRequestsAsync <TRequest> BuildAsyncPipeline(RequestHandlerAsync <TRequest> implicitHandler, IRequestContext requestContext, bool continueOnCapturedContext)
{
implicitHandler.Context = requestContext;
implicitHandler.ContinueOnCapturedContext = continueOnCapturedContext;
var preAttributes =
implicitHandler.FindHandlerMethod()
.GetOtherHandlersInPipeline()
.Where(attribute => attribute.Timing == HandlerTiming.Before)
.OrderByDescending(attribute => attribute.Step);
var firstInPipeline = PushOntoAsyncPipeline(preAttributes, implicitHandler, requestContext, continueOnCapturedContext);
var postAttributes =
implicitHandler.FindHandlerMethod()
.GetOtherHandlersInPipeline()
.Where(attribute => attribute.Timing == HandlerTiming.After)
.OrderByDescending(attribute => attribute.Step);
AppendToAsyncPipeline(postAttributes, implicitHandler, requestContext);
_logger.Value.DebugFormat("New async handler pipeline created: {0}", TracePipeline(firstInPipeline));
return(firstInPipeline);
}
private void AddGlobalInboxAttributesAsync(ref IOrderedEnumerable <RequestHandlerAttribute> preAttributes, RequestHandlerAsync <TRequest> implicitHandler)
{
if (_inboxConfiguration == null ||
implicitHandler.FindHandlerMethod().HasNoInboxAttributesInPipeline() ||
implicitHandler.FindHandlerMethod().HasExistingUseInboxAttributesInPipeline()
)
{
return;
}
var useInboxAttribute = new UseInboxAsyncAttribute(
step: 0,
contextKey: _inboxConfiguration.Context(implicitHandler.GetType()),
onceOnly: _inboxConfiguration.OnceOnly,
timing: HandlerTiming.Before,
onceOnlyAction: _inboxConfiguration.ActionOnExists);
PushOntoAttributeList(ref preAttributes, useInboxAttribute);
}
