public void OnProvidersExecuting(ActionInvokerProviderContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (context.ActionContext.ActionDescriptor is ControllerActionDescriptor)
{
var controllerContext = new ControllerContext(context.ActionContext)
{
// PERF: These are rarely going to be changed, so let's go copy-on-write.
ValueProviderFactories = new CopyOnWriteList <IValueProviderFactory>(_valueProviderFactories)
};
controllerContext.ModelState.MaxAllowedErrors = _maxModelValidationErrors;
var(cacheEntry, filters) = _controllerActionInvokerCache.GetCachedResult(controllerContext);
var invoker = new ControllerActionInvoker(
_logger,
_diagnosticListener,
_actionContextAccessor,
_mapper,
controllerContext,
cacheEntry,
filters);
context.Result = invoker;
}
}
/// <summary>
/// 提供程序执行时调用
/// </summary>
/// <param name="context"></param>
/// <exception cref="NotImplementedException"></exception>
public void OnProvidersExecuting(ActionInvokerProviderContext context)
{
// 只针对控制器的Action进行操作
if (!(context.ActionContext.ActionDescriptor is ControllerActionDescriptor controllerActionDescriptor))
{
return;
}
// 只对ClownFish的Action进行参数绑定处理
if (controllerActionDescriptor.Properties.ContainsKey("ClownFish") == false)
{
return;
}
ControllerContext controllerContext = new ControllerContext(context.ActionContext);
controllerContext.ValueProviderFactories = new CopyOnWriteList <IValueProviderFactory>(_valueProviderFactories);
controllerContext.ModelState.MaxAllowedErrors = _maxModelValidationErrors;
var cachedResult = _controllerActionInvokerCache.GetCachedResult(controllerContext);
var controllerActionInvokerCacheEntry = cachedResult.cacheEntry;
if (controllerActionInvokerCacheEntry != null)
{
//兼容多参数绑定的实现
CompatibilityClownFishWeb(controllerActionDescriptor,
controllerActionInvokerCacheEntry);
}
}
/// <summary>
///
/// </summary>
/// <param name="controllerContext"></param>
/// <returns></returns>
private object[] BindArguments(ControllerContext controllerContext)
{
(var cacheEntry, var _) = _controllerActionInvokerCache.GetCachedResult(controllerContext);
var actionMethodExecutor = cacheEntry.GetActionMethodExecutor();
var controllerActionInvoker = (ControllerActionInvoker)_actionInvokerFactory.CreateInvoker(_actionContext);
var binder = cacheEntry.ControllerBinderDelegate;
var arguments = new Dictionary <string, object>(StringComparer.OrdinalIgnoreCase);
binder?.Invoke(controllerContext, new object(), arguments).Wait();
var orderedArguments = controllerActionInvoker.PrepareArguments(arguments, actionMethodExecutor);
return(orderedArguments);
}
public RequestDelegate CreateRequestDelegate(ActionDescriptor actionDescriptor, RouteValueDictionary dataTokens)
{
// Fallback to action invoker extensibility so that invokers can override any default behaviors
if (!_enableActionInvokers && actionDescriptor is ControllerActionDescriptor)
{
return(context =>
{
RouteData routeData = null;
if (dataTokens is null or {
Count : 0
})
{
routeData = new RouteData(context.Request.RouteValues);
}
else
{
routeData = new RouteData();
routeData.PushState(router: null, context.Request.RouteValues, dataTokens);
}
var actionContext = new ActionContext(context, routeData, actionDescriptor);
var controllerContext = new ControllerContext(actionContext)
{
// PERF: These are rarely going to be changed, so let's go copy-on-write.
ValueProviderFactories = new CopyOnWriteList <IValueProviderFactory>(_valueProviderFactories)
};
controllerContext.ModelState.MaxAllowedErrors = _maxModelValidationErrors;
var(cacheEntry, filters) = _controllerActionInvokerCache.GetCachedResult(controllerContext);
var invoker = new ControllerActionInvoker(
_logger,
_diagnosticListener,
_actionContextAccessor,
_mapper,
controllerContext,
cacheEntry,
filters);
return invoker.InvokeAsync();
});
