private dynamic BuildCachedShape(IContent content, string displayType, string groupId)
{
_cacheSettings = GetOutputCacheSettings(content);
_cacheKey = ComputeCacheKey(content, displayType, groupId);
_invariantCacheKey = string.Format("tenant={0};id={1};", _shellSettings.Name, content.ContentItem.Id);
var cacheKeyLock = _cacheKeyLocks.GetOrAdd(_cacheKey, x => new object());
var cacheDuration = _cacheSettings.CacheDuration;
_now = _clock.UtcNow;
//dynamic result = null;
try
{
var cacheItem = _cacheStorageProvider.GetCacheItem(_cacheKey);
if (cacheItem != null)
{
if (_now > cacheItem.ValidUntilUtc && _now < cacheItem.CachedOnUtc.AddSeconds(cacheDuration + _cacheSettings.CacheGraceTime))
{
if (Monitor.TryEnter(cacheKeyLock))
{
return(BeginRenderItem(content, displayType, groupId));
}
}
return(ServeCachedItem(cacheItem, content, displayType, groupId));
}
if (Monitor.TryEnter(cacheKeyLock))
{
cacheItem = _cacheStorageProvider.GetCacheItem(_cacheKey);
if (cacheItem != null)
{
Monitor.Exit(cacheKeyLock);
return(ServeCachedItem(cacheItem, content, displayType, groupId));
}
}
return(BeginRenderItem(content, displayType, groupId));
}
catch
{
if (Monitor.IsEntered(cacheKeyLock))
{
Monitor.Exit(cacheKeyLock);
}
throw;
}
}
private dynamic BeginRenderItem(IContent content, string displayType, string groupId)
{
WorkContext workContext = _workContextAccessor.GetContext();
var output = _shapeDisplay.Display(BuildShape(content, displayType, groupId));
_cacheSettings = GetOutputCacheSettings(content);
_cacheKey = ComputeCacheKey(content, displayType, groupId);
_invariantCacheKey = string.Format("tenant={0};id={1};", _shellSettings.Name, content.ContentItem.Id);
var cacheItem = new CacheItem()
{
CachedOnUtc = _now,
ValidFor = _cacheSettings.CacheDuration,
Output = _jsonConverter.Serialize(new OutputCacheItem
{
Id = content.ContentItem.Id,
Output = output,
Resources = _resourceManager.GetRequiredResources("script")
.Concat(_resourceManager.GetRequiredResources("stylesheet")).Select(GetCacheItemResource).ToList()
}),
ContentType = content.ContentItem.ContentType,
QueryString = workContext.HttpContext.Request.Url.Query,
CacheKey = _cacheKey,
InvariantCacheKey = _invariantCacheKey,
Url = workContext.HttpContext.Request.Url.AbsolutePath,
Tenant = _shellSettings.Name,
StatusCode = workContext.HttpContext.Response.StatusCode,
Tags = new[] { _invariantCacheKey, content.ContentItem.Id.ToString(CultureInfo.InvariantCulture) }
};
_cacheStorageProvider.Remove(_cacheKey);
_cacheStorageProvider.Set(_cacheKey, cacheItem);
foreach (var tag in cacheItem.Tags)
{
_tagCache.Tag(tag, _cacheKey);
}
return(ServeCachedItem(cacheItem, content, displayType, groupId));
}
