/// <summary>
/// Resolves HTTP request to a route using the provided route context and the action selector and invoker services.
/// </summary>
/// <param name="services">Application services from which the route will be resolved.</param>
/// <param name="router">IRouter to resolve route values.</param>
/// <param name="routeContext">RouteContext to use for resolving the route values.</param>
/// <returns>Resolved route information.</returns>
public static ResolvedRouteContext Resolve(IServiceProvider services, IRouter router, RouteContext routeContext)
{
try
{
RouteDataResolver.ResolveRouteData(router, routeContext);
}
catch (Exception ex)
{
return(new ResolvedRouteContext($"exception was thrown when trying to resolve route data: '{ex.Unwrap().Message}'"));
}
var actionSelector = services.GetRequiredService <IActionSelector>();
ActionDescriptor actionDescriptor;
try
{
var actions = routeContext
.RouteData
.Routers
.OfType <MvcAttributeRouteHandler>()
.FirstOrDefault()
?.Actions
?? actionSelector.SelectCandidates(routeContext);
actionDescriptor = actionSelector.SelectBestCandidate(
routeContext,
actions);
}
catch (Exception ex)
{
return(new ResolvedRouteContext($"exception was thrown when trying to select an action: '{ex.Unwrap().Message}'"));
}
if (actionDescriptor == null)
{
return(new ResolvedRouteContext("action could not be matched"));
}
var actionContext = new ActionContext(routeContext.HttpContext, routeContext.RouteData, actionDescriptor);
var controllerActionDescriptor = actionDescriptor as ControllerActionDescriptor;
if (controllerActionDescriptor == null)
{
throw new InvalidOperationException("Only controller actions are supported by the route testing.");
}
var actionInvokerFactory = services.GetRequiredService <IActionInvokerFactory>();
var invoker = actionInvokerFactory.CreateInvoker(actionContext);
var modelBindingActionInvoker = invoker as IModelBindingActionInvoker;
if (modelBindingActionInvoker == null)
{
throw new InvalidOperationException("Route testing requires the selected IActionInvoker by the IActionInvokerFactory to implement IModelBindingActionInvoker.");
}
try
{
AsyncHelper.RunSync(() => modelBindingActionInvoker.InvokeAsync());
}
catch (Exception ex)
{
return(new ResolvedRouteContext($"exception was thrown when trying to bind the action arguments: '{ex.Unwrap().Message}'"));
}
if (modelBindingActionInvoker.BoundActionArguments == null)
{
return(new ResolvedRouteContext("action could not be invoked because of the declared filters. You must set the request properties so that they will pass through the pipeline"));
}
return(new ResolvedRouteContext(
controllerActionDescriptor.ControllerTypeInfo,
controllerActionDescriptor.ControllerName,
controllerActionDescriptor.ActionName,
modelBindingActionInvoker.BoundActionArguments,
actionContext.RouteData,
actionContext.ModelState));
}
/// <summary>
/// Resolves HTTP request to a route using the provided route context and the action selector and invoker services.
/// </summary>
/// <param name="services">Application services from which the route will be resolved.</param>
/// <param name="router">IRouter to resolve route values.</param>
/// <param name="routeContext">RouteContext to use for resolving the route values.</param>
/// <param name="fullExecution">Indicates whether the full MVC pipeline will be executed or not.</param>
/// <returns>Resolved route information.</returns>
public static ResolvedRouteContext Resolve(
IServiceProvider services,
IRouter router,
RouteContext routeContext,
bool fullExecution = false)
{
try
{
RouteDataResolver.ResolveRouteData(router, routeContext);
}
catch (Exception ex)
{
return(new ResolvedRouteContext($"exception was thrown when trying to resolve route data: '{ex.Unwrap().Message}'"));
}
var actionSelector = services.GetRequiredService <IActionSelector>();
ActionDescriptor actionDescriptor;
try
{
var actions = routeContext
.RouteData
.Routers
.FirstOrDefault(r => r.GetType() == WebFramework.Internals.MvcAttributeRouteHandler)
?.Exposed()
.Actions
?? actionSelector.SelectCandidates(routeContext);
actionDescriptor = actionSelector.SelectBestCandidate(
routeContext,
actions);
}
catch (Exception ex)
{
return(new ResolvedRouteContext($"exception was thrown when trying to select an action: '{ex.Unwrap().Message}'"));
}
if (actionDescriptor == null)
{
return(new ResolvedRouteContext("action could not be matched"));
}
routeContext.HttpContext.Features.Set(new RouteTestingFeature(fullExecution));
var actionContext = new ActionContext(routeContext.HttpContext, routeContext.RouteData, actionDescriptor);
if (!(actionDescriptor is ControllerActionDescriptor controllerActionDescriptor))
{
throw new InvalidOperationException("Only controller actions are supported by the route testing.");
}
var actionInvokerFactory = services.GetRequiredService <IActionInvokerFactory>();
var invoker = actionInvokerFactory.CreateInvoker(actionContext);
if (!(invoker is IModelBindingActionInvoker modelBindingActionInvoker))
{
throw new InvalidOperationException($"Route testing requires the selected {nameof(IActionInvoker)} by the {nameof(IActionInvokerFactory)} to implement {nameof(IModelBindingActionInvoker)}.");
}
try
{
AsyncHelper.RunSync(() => modelBindingActionInvoker.InvokeAsync());
}
catch (Exception ex)
{
return(new ResolvedRouteContext($"exception was thrown when trying to invoke the pipeline: '{ex.Unwrap().Message}'"));
}
if (modelBindingActionInvoker.BoundActionArguments == null)
{
var filters = actionDescriptor
.FilterDescriptors
.OrderByDescending(f => f.Order)
.Select(f => $"{f.Filter.GetName()} ({f.Scope.ToFilterScopeName()})")
.ToArray();
var filtersMessage = filters.Any()
? $"filters - {string.Join(", ", filters)}"
: "filters";
return(new ResolvedRouteContext($"action could not be invoked because of the declared {filtersMessage}. Either a filter is setting the response result before the action itself, or you must set the request properties so that they will pass through the pipeline"));
}
return(new ResolvedRouteContext(
controllerActionDescriptor.ControllerTypeInfo,
controllerActionDescriptor.ControllerName,
controllerActionDescriptor.ActionName,
modelBindingActionInvoker.BoundActionArguments,
actionContext.RouteData,
actionContext.ModelState));
}
