public ControllerActionInvokerState GetState(ControllerContext controllerContext)
{
// Filter instances from statically defined filter descriptors + from filter providers
IFilterMetadata[] filters;
var cache = CurrentCache;
var actionDescriptor = controllerContext.ActionDescriptor;
Entry cacheEntry;
if (cache.Entries.TryGetValue(actionDescriptor, out cacheEntry))
{
// Deep copy the cached filter items as filter providers could modify them
var filterItems = new List<FilterItem>(cacheEntry.FilterItems.Count);
for (var i = 0; i < cacheEntry.FilterItems.Count; i++)
{
var filterItem = cacheEntry.FilterItems[i];
filterItems.Add(
new FilterItem(filterItem.Descriptor)
{
Filter = filterItem.Filter,
IsReusable = filterItem.IsReusable
});
}
filters = GetFilters(controllerContext, filterItems);
return new ControllerActionInvokerState(filters, cacheEntry.ActionMethodExecutor);
}
var executor = ObjectMethodExecutor.Create(
actionDescriptor.MethodInfo,
actionDescriptor.ControllerTypeInfo);
var staticFilterItems = new List<FilterItem>(actionDescriptor.FilterDescriptors.Count);
for (var i = 0; i < actionDescriptor.FilterDescriptors.Count; i++)
{
staticFilterItems.Add(new FilterItem(actionDescriptor.FilterDescriptors[i]));
}
// Create a separate collection as we want to hold onto the statically defined filter items
// in order to cache them
var allFilterItems = new List<FilterItem>(staticFilterItems);
filters = GetFilters(controllerContext, allFilterItems);
// Cache the filter items based on the following criteria
// 1. Are created statically (ex: via filter attributes, added to global filter list etc.)
// 2. Are re-usable
for (var i = 0; i < staticFilterItems.Count; i++)
{
var item = staticFilterItems[i];
if (!item.IsReusable)
{
item.Filter = null;
}
}
cacheEntry = new Entry(staticFilterItems, executor);
cache.Entries.TryAdd(actionDescriptor, cacheEntry);
return new ControllerActionInvokerState(filters, cacheEntry.ActionMethodExecutor);
}
private static ObjectMethodExecutor CreateExecutor(ControllerActionDescriptor actionDescriptor)
{
return(ObjectMethodExecutor.Create(actionDescriptor.MethodInfo, actionDescriptor.ControllerTypeInfo));
}