private CustomViewLocationCacheResult LocatePageFromViewLocations(
ActionContext actionContext,
string pageName,
bool isMainPage)
{
var controllerName = GetNormalizedRouteValue(actionContext, ControllerKey);
var areaName = GetNormalizedRouteValue(actionContext, AreaKey);
string razorPageName = null;
if (actionContext.ActionDescriptor.RouteValues.ContainsKey(PageKey))
{
// Only calculate the Razor Page name if "page" is registered in RouteValues.
razorPageName = GetNormalizedRouteValue(actionContext, PageKey);
}
var expanderContext = new ViewLocationExpanderContext(
actionContext,
pageName,
controllerName,
areaName,
razorPageName,
isMainPage);
Dictionary <string, string> expanderValues = null;
var expanders = _options.ViewLocationExpanders;
// Read interface .Count once rather than per iteration
var expandersCount = expanders.Count;
if (expandersCount > 0)
{
expanderValues = new Dictionary <string, string>(StringComparer.Ordinal);
expanderContext.Values = expanderValues;
// Perf: Avoid allocations
for (var i = 0; i < expandersCount; i++)
{
expanders[i].PopulateValues(expanderContext);
}
}
var cacheKey = new CustomViewLocationCacheKey(
expanderContext.ViewName,
expanderContext.ControllerName,
expanderContext.AreaName,
expanderContext.PageName,
expanderContext.IsMainPage,
expanderValues);
if (!ViewLookupCache.TryGetValue(cacheKey, out CustomViewLocationCacheResult cacheResult))
{
//_logger.ViewLookupCacheMiss(cacheKey.ViewName, cacheKey.ControllerName);
cacheResult = OnCacheMiss(expanderContext, cacheKey);
}
else
{
//_logger.ViewLookupCacheHit(cacheKey.ViewName, cacheKey.ControllerName);
}
return(cacheResult);
}
private CustomViewLocationCacheResult LocatePageFromPath(string executingFilePath, string pagePath, bool isMainPage)
{
var applicationRelativePath = GetAbsolutePath(executingFilePath, pagePath);
var cacheKey = new CustomViewLocationCacheKey(applicationRelativePath, isMainPage);
if (!ViewLookupCache.TryGetValue(cacheKey, out CustomViewLocationCacheResult cacheResult))
{
var expirationTokens = new HashSet <IChangeToken>();
cacheResult = CreateCacheResult(expirationTokens, applicationRelativePath, isMainPage);
var cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.SetSlidingExpiration(_cacheExpirationDuration);
foreach (var expirationToken in expirationTokens)
{
cacheEntryOptions.AddExpirationToken(expirationToken);
}
// No views were found at the specified location. Create a not found result.
if (cacheResult == null)
{
cacheResult = new CustomViewLocationCacheResult(new[] { applicationRelativePath });
}
cacheResult = ViewLookupCache.Set(
cacheKey,
cacheResult,
cacheEntryOptions);
}
return(cacheResult);
}
private CustomViewLocationCacheResult OnCacheMiss(
ViewLocationExpanderContext expanderContext,
CustomViewLocationCacheKey cacheKey)
{
var viewLocations = GetViewLocationFormats(expanderContext);
var expanders = _options.ViewLocationExpanders;
// Read interface .Count once rather than per iteration
var expandersCount = expanders.Count;
for (var i = 0; i < expandersCount; i++)
{
viewLocations = expanders[i].ExpandViewLocations(expanderContext, viewLocations);
}
CustomViewLocationCacheResult cacheResult = null;
var searchedLocations = new List <string>();
var expirationTokens = new HashSet <IChangeToken>();
foreach (var location in viewLocations)
{
var path = string.Format(
CultureInfo.InvariantCulture,
location,
expanderContext.ViewName,
expanderContext.ControllerName,
expanderContext.AreaName);
path = CustomViewEnginePath.ResolvePath(path);
cacheResult = CreateCacheResult(expirationTokens, path, expanderContext.IsMainPage);
if (cacheResult != null)
{
break;
}
searchedLocations.Add(path);
}
// No views were found at the specified location. Create a not found result.
if (cacheResult == null)
{
cacheResult = new CustomViewLocationCacheResult(searchedLocations);
}
var cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.SetSlidingExpiration(_cacheExpirationDuration);
foreach (var expirationToken in expirationTokens)
{
cacheEntryOptions.AddExpirationToken(expirationToken);
}
return(ViewLookupCache.Set(cacheKey, cacheResult, cacheEntryOptions));
}
