ActionSelectorCacheItem GetInternalSelector(HttpControllerDescriptor controllerDescriptor)
{
Contract.Requires(controllerDescriptor != null);
Contract.Ensures(Contract.Result <ActionSelectorCacheItem>() != null);
if (fastCache == null)
{
var selector = new ActionSelectorCacheItem(controllerDescriptor);
CompareExchange(ref fastCache, selector, null);
return(selector);
}
else if (fastCache.HttpControllerDescriptor == controllerDescriptor)
{
return(fastCache);
}
else
{
if (controllerDescriptor.Properties.TryGetValue(cacheKey, out var cacheValue))
{
return((ActionSelectorCacheItem)cacheValue);
}
var selector = new ActionSelectorCacheItem(controllerDescriptor);
controllerDescriptor.Properties.TryAdd(cacheKey, selector);
return(selector);
}
}
private ActionSelectorCacheItem GetInternalSelector(HttpControllerDescriptor controllerDescriptor)
{
// Performance-sensitive
// First check in the local fast cache and if not a match then look in the broader
// HttpControllerDescriptor.Properties cache
if (_fastCache == null)
{
ActionSelectorCacheItem selector = new ActionSelectorCacheItem(controllerDescriptor);
Interlocked.CompareExchange(ref _fastCache, selector, null);
return(selector);
}
else if (_fastCache.HttpControllerDescriptor == controllerDescriptor)
{
// If the key matches and we already have the delegate for creating an instance then just execute it
return(_fastCache);
}
else
{
// If the key doesn't match then lookup/create delegate in the HttpControllerDescriptor.Properties for
// that HttpControllerDescriptor instance
object cacheValue;
if (controllerDescriptor.Properties.TryGetValue(_cacheKey, out cacheValue))
{
return((ActionSelectorCacheItem)cacheValue);
}
// Race condition on initialization has no side effects
ActionSelectorCacheItem selector = new ActionSelectorCacheItem(controllerDescriptor);
controllerDescriptor.Properties.TryAdd(_cacheKey, selector);
return(selector);
}
}
ActionSelectorCacheItem GetInternalSelector(HttpControllerDescriptor controllerDescriptor)
{
controllerDescriptor = Decorator.GetInner(controllerDescriptor);
if (fastCache == null)
{
var selector = new ActionSelectorCacheItem(controllerDescriptor);
CompareExchange(ref fastCache, selector, null);
return(selector);
}
else if (fastCache.HttpControllerDescriptor == controllerDescriptor)
{
return(fastCache);
}
else
{
if (controllerDescriptor.Properties.TryGetValue(cacheKey, out var cacheValue))
{
return((ActionSelectorCacheItem)cacheValue);
}
var selector = new ActionSelectorCacheItem(controllerDescriptor);
controllerDescriptor.Properties.TryAdd(cacheKey, selector);
return(selector);
}
}
private ActionSelectorCacheItem GetInternalSelector(HttpControllerDescriptor controllerDescriptor)
{
// Performance-sensitive
// First check in the local fast cache and if not a match then look in the broader
// HttpControllerDescriptor.Properties cache
if (_fastCache == null)
{
ActionSelectorCacheItem selector = new ActionSelectorCacheItem(controllerDescriptor);
Interlocked.CompareExchange(ref _fastCache, selector, null);
return selector;
}
else if (_fastCache.HttpControllerDescriptor == controllerDescriptor)
{
// If the key matches and we already have the delegate for creating an instance then just execute it
return _fastCache;
}
else
{
// If the key doesn't match then lookup/create delegate in the HttpControllerDescriptor.Properties for
// that HttpControllerDescriptor instance
object cacheValue;
if (controllerDescriptor.Properties.TryGetValue(_cacheKey, out cacheValue))
{
return (ActionSelectorCacheItem)cacheValue;
}
// Race condition on initialization has no side effects
ActionSelectorCacheItem selector = new ActionSelectorCacheItem(controllerDescriptor);
controllerDescriptor.Properties.TryAdd(_cacheKey, selector);
return selector;
}
}
private ActionSelectorCacheItem GetInternalSelector(HttpControllerDescriptor controllerDescriptor)
{
// First check in the local fast cache and if not a match then look in the broader
// HttpControllerDescriptor.Properties cache
if (_fastCache == null)
{
ActionSelectorCacheItem selector = new ActionSelectorCacheItem(controllerDescriptor);
Interlocked.CompareExchange(ref _fastCache, selector, null);
return(selector);
}
else if (_fastCache.HttpControllerDescriptor == controllerDescriptor)
{
// If the key matches and we already have the delegate for creating an instance then just execute it
return(_fastCache);
}
else
{
// If the key doesn't match then lookup/create delegate in the HttpControllerDescriptor.Properties for
// that HttpControllerDescriptor instance
ActionSelectorCacheItem selector = (ActionSelectorCacheItem)controllerDescriptor.Properties.GetOrAdd(
_cacheKey,
_ => new ActionSelectorCacheItem(controllerDescriptor));
return(selector);
}
}
public virtual ILookup <string, HttpActionDescriptor> GetActionMapping(HttpControllerDescriptor controllerDescriptor)
{
if (controllerDescriptor == null)
{
throw Error.ArgumentNull("controllerDescriptor");
}
ActionSelectorCacheItem internalSelector = GetInternalSelector(controllerDescriptor);
return(internalSelector.GetActionMapping());
}
public virtual HttpActionDescriptor SelectAction(HttpControllerContext controllerContext)
{
if (controllerContext == null)
{
throw Error.ArgumentNull("controllerContext");
}
ActionSelectorCacheItem internalSelector = GetInternalSelector(controllerContext.ControllerDescriptor);
return(internalSelector.SelectAction(controllerContext));
}
public override HttpActionDescriptor SelectAction(HttpControllerContext controllerContext)
{
if (controllerContext == null)
{
throw
new Exception
(
@"Error.ArgumentNull(""controllerContext"")"
);
}
ActionSelectorCacheItem internalSelector = GetInternalSelector(controllerContext.ControllerDescriptor);
return(internalSelector.SelectAction(controllerContext));
}
public virtual ActionDescriptor SelectAction(ControllerContext controllerContext)
{
if (controllerContext == null)
{
throw Error.ArgumentNull("controllerContext");
}
var controller = controllerContext.Controller as Controller;
if (controller == null)
{
throw new InvalidOperationException("Controller must inherit from System.Web.Mvc.Controller");
}
ApiControllerActionInvoker invoker = controller.ActionInvoker as ApiControllerActionInvoker;
if (invoker == null)
{
throw new InvalidOperationException("ActionInvoker must inherit from ApiControllerActionInvoker.");
}
var controllerDescriptor = invoker.GetControllerDescriptor(controller.GetType());
Func<object, object> valueFactory = null;
if (this.cachedActionSelector == null)
{
ActionSelectorCacheItem actionSelectorItem = new ActionSelectorCacheItem(controllerDescriptor);
Interlocked.CompareExchange<ActionSelectorCacheItem>(ref this.cachedActionSelector, actionSelectorItem, null);
return actionSelectorItem.SelectAction(controllerContext);
}
if (this.cachedActionSelector.ControllerDescriptor == controllerDescriptor)
{
return this.cachedActionSelector.SelectAction(controllerContext);
}
if (valueFactory == null)
{
valueFactory = _ => new ActionSelectorCacheItem(controllerDescriptor);
}
var properties = ((ApiControllerDescriptor)controllerDescriptor).Properties;
ActionSelectorCacheItem orAdd = (ActionSelectorCacheItem)properties.GetOrAdd(this._cacheKey, valueFactory);
return orAdd.SelectAction(controllerContext);
}
private ActionSelectorCacheItem GetInternalSelector(HttpControllerDescriptor controllerDescriptor)
{
// First check in the local fast cache and if not a match then look in the broader
// HttpControllerDescriptor.Properties cache
if (this.fastCache == null)
{
var selector = new ActionSelectorCacheItem(controllerDescriptor);
Interlocked.CompareExchange(ref this.fastCache, selector, null);
return selector;
}
if (this.fastCache.HttpControllerDescriptor == controllerDescriptor)
{
// If the key matches and we already have the delegate for creating an instance then just execute it
return this.fastCache;
}
// If the key doesn't match then lookup/create delegate in the HttpControllerDescriptor.Properties for
// that HttpControllerDescriptor instance
return (ActionSelectorCacheItem)controllerDescriptor.Properties.GetOrAdd(
this.cacheKey,
_ => new ActionSelectorCacheItem(controllerDescriptor));
}
Exception CreateAmbiguousActionException(IEnumerable <HttpActionDescriptor> matches)
{
var ambiguityList = ActionSelectorCacheItem.CreateAmbiguousMatchList(matches);
return(new InvalidOperationException(SR.ApiControllerActionSelector_AmbiguousMatch.FormatDefault(ambiguityList)));
}
