private Task InvokeNextActionFilterAsync()
{
try
{
var next = State.ActionNext;
var state = (object)null;
var scope = Scope.Action;
var isCompleted = false;
while (!isCompleted)
{
var lastTask = Next(ref next, ref scope, ref state, ref isCompleted);
if (!lastTask.IsCompletedSuccessfully)
{
return(Awaited(this, lastTask, next, scope, state, isCompleted));
}
}
}
catch (Exception exception)
{
_actionExecutedContext = new ActionExecutedContextSealed(_controllerContext, _filters, _instance)
{
ExceptionDispatchInfo = ExceptionDispatchInfo.Capture(exception),
};
}
Debug.Assert(_actionExecutedContext != null);
return(Task.CompletedTask);
private Task Next(ref State next, ref Scope scope, ref object state, ref bool isCompleted)
{
switch (next)
{
case State.ActionBegin:
{
var controllerContext = _controllerContext;
_cursor.Reset();
_logger.ExecutingControllerFactory(controllerContext);
_instance = _cacheEntry.ControllerFactory(controllerContext);
_logger.ExecutedControllerFactory(controllerContext);
_arguments = new Dictionary <string, object>(StringComparer.OrdinalIgnoreCase);
var task = BindArgumentsAsync();
if (task.Status != TaskStatus.RanToCompletion)
{
next = State.ActionNext;
return(task);
}
goto case State.ActionNext;
}
case State.ActionNext:
{
var current = _cursor.GetNextFilter <IActionFilter, IAsyncActionFilter>();
if (current.FilterAsync != null)
{
if (_actionExecutingContext == null)
{
_actionExecutingContext = new ActionExecutingContextSealed(_controllerContext, _filters, _arguments, _instance);
}
state = current.FilterAsync;
goto case State.ActionAsyncBegin;
}
else if (current.Filter != null)
{
if (_actionExecutingContext == null)
{
_actionExecutingContext = new ActionExecutingContextSealed(_controllerContext, _filters, _arguments, _instance);
}
state = current.Filter;
goto case State.ActionSyncBegin;
}
else
{
goto case State.ActionInside;
}
}
case State.ActionAsyncBegin:
{
Debug.Assert(state != null);
Debug.Assert(_actionExecutingContext != null);
var filter = (IAsyncActionFilter)state;
var actionExecutingContext = _actionExecutingContext;
_diagnosticListener.BeforeOnActionExecution(actionExecutingContext, filter);
_logger.BeforeExecutingMethodOnFilter(
MvcCoreLoggerExtensions.ActionFilter,
nameof(IAsyncActionFilter.OnActionExecutionAsync),
filter);
var task = filter.OnActionExecutionAsync(actionExecutingContext, InvokeNextActionFilterAwaitedAsync);
if (task.Status != TaskStatus.RanToCompletion)
{
next = State.ActionAsyncEnd;
return(task);
}
goto case State.ActionAsyncEnd;
}
case State.ActionAsyncEnd:
{
Debug.Assert(state != null);
Debug.Assert(_actionExecutingContext != null);
var filter = (IAsyncActionFilter)state;
if (_actionExecutedContext == null)
{
// If we get here then the filter didn't call 'next' indicating a short circuit.
_logger.ActionFilterShortCircuited(filter);
_actionExecutedContext = new ActionExecutedContextSealed(
_controllerContext,
_filters,
_instance)
{
Canceled = true,
Result = _actionExecutingContext.Result,
};
}
_diagnosticListener.AfterOnActionExecution(_actionExecutedContext, filter);
_logger.AfterExecutingMethodOnFilter(
MvcCoreLoggerExtensions.ActionFilter,
nameof(IAsyncActionFilter.OnActionExecutionAsync),
filter);
goto case State.ActionEnd;
}
case State.ActionSyncBegin:
{
Debug.Assert(state != null);
Debug.Assert(_actionExecutingContext != null);
var filter = (IActionFilter)state;
var actionExecutingContext = _actionExecutingContext;
_diagnosticListener.BeforeOnActionExecuting(actionExecutingContext, filter);
_logger.BeforeExecutingMethodOnFilter(
MvcCoreLoggerExtensions.ActionFilter,
nameof(IActionFilter.OnActionExecuting),
filter);
filter.OnActionExecuting(actionExecutingContext);
_diagnosticListener.AfterOnActionExecuting(actionExecutingContext, filter);
_logger.AfterExecutingMethodOnFilter(
MvcCoreLoggerExtensions.ActionFilter,
nameof(IActionFilter.OnActionExecuting),
filter);
if (actionExecutingContext.Result != null)
{
// Short-circuited by setting a result.
_logger.ActionFilterShortCircuited(filter);
_actionExecutedContext = new ActionExecutedContextSealed(
_actionExecutingContext,
_filters,
_instance)
{
Canceled = true,
Result = _actionExecutingContext.Result,
};
goto case State.ActionEnd;
}
var task = InvokeNextActionFilterAsync();
if (task.Status != TaskStatus.RanToCompletion)
{
next = State.ActionSyncEnd;
return(task);
}
goto case State.ActionSyncEnd;
}
case State.ActionSyncEnd:
{
Debug.Assert(state != null);
Debug.Assert(_actionExecutingContext != null);
Debug.Assert(_actionExecutedContext != null);
var filter = (IActionFilter)state;
var actionExecutedContext = _actionExecutedContext;
_diagnosticListener.BeforeOnActionExecuted(actionExecutedContext, filter);
_logger.BeforeExecutingMethodOnFilter(
MvcCoreLoggerExtensions.ActionFilter,
nameof(IActionFilter.OnActionExecuted),
filter);
filter.OnActionExecuted(actionExecutedContext);
_diagnosticListener.AfterOnActionExecuted(actionExecutedContext, filter);
_logger.AfterExecutingMethodOnFilter(
MvcCoreLoggerExtensions.ActionFilter,
nameof(IActionFilter.OnActionExecuted),
filter);
goto case State.ActionEnd;
}
case State.ActionInside:
{
var task = InvokeActionMethodAsync();
if (task.Status != TaskStatus.RanToCompletion)
{
next = State.ActionEnd;
return(task);
}
goto case State.ActionEnd;
}
case State.ActionEnd:
{
if (scope == Scope.Action)
{
if (_actionExecutedContext == null)
{
_actionExecutedContext = new ActionExecutedContextSealed(_controllerContext, _filters, _instance)
{
Result = _result,
};
}
isCompleted = true;
return(Task.CompletedTask);
}
var actionExecutedContext = _actionExecutedContext;
Rethrow(actionExecutedContext);
if (actionExecutedContext != null)
{
_result = actionExecutedContext.Result;
}
isCompleted = true;
return(Task.CompletedTask);
}
default:
throw new InvalidOperationException();
}
}
