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Fixing that Output Cache storage providers could fail with an ObjectDisposedException due to a deferred delegate execution causing the usage of dependencies from a disposed lifetime scope.

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Lombiq
2015-05-30 01:37:31 +02:00
parent 3d25ca42c9
commit ee0bd03c04
1 changed files with 30 additions and 21 deletions
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51
src/Orchard.Web/Modules/Orchard.OutputCache/Filters/OutputCacheFilter.cs
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@@ -213,30 +213,39 @@ namespace Orchard.OutputCache.Filters {
response.Filter = captureStream;
captureStream.Captured += (output) => {
try {
var cacheItem = new CacheItem() {
CachedOnUtc = _now,
Duration = cacheDuration,
GraceTime = cacheGraceTime,
Output = output,
ContentType = response.ContentType,
QueryString = filterContext.HttpContext.Request.Url.Query,
CacheKey = _cacheKey,
InvariantCacheKey = _invariantCacheKey,
Url = filterContext.HttpContext.Request.Url.AbsolutePath,
Tenant = _shellSettings.Name,
StatusCode = response.StatusCode,
Tags = new[] { _invariantCacheKey }.Union(contentItemIds).ToArray()
};
// Since this is a callback any call to injected dependencies can result in an Autofac exception: "Instances
// cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it has already been disposed."
// To prevent access to the original lifetime scope a new work context scope should be created here and dependencies
// should be resolved from it.
// Write the rendered item to the cache.
_cacheStorageProvider.Remove(_cacheKey);
_cacheStorageProvider.Set(_cacheKey, cacheItem);
using (var scope = _workContextAccessor.CreateWorkContextScope()) {
var cacheItem = new CacheItem() {
CachedOnUtc = _now,
Duration = cacheDuration,
GraceTime = cacheGraceTime,
Output = output,
ContentType = response.ContentType,
QueryString = filterContext.HttpContext.Request.Url.Query,
CacheKey = _cacheKey,
InvariantCacheKey = _invariantCacheKey,
Url = filterContext.HttpContext.Request.Url.AbsolutePath,
Tenant = scope.Resolve<ShellSettings>().Name,
StatusCode = response.StatusCode,
Tags = new[] { _invariantCacheKey }.Union(contentItemIds).ToArray()
};
Logger.Debug("Item '{0}' was written to cache.", _cacheKey);
// Write the rendered item to the cache.
var cacheStorageProvider = scope.Resolve<IOutputCacheStorageProvider>();
cacheStorageProvider.Remove(_cacheKey);
cacheStorageProvider.Set(_cacheKey, cacheItem);
// Also add the item tags to the tag cache.
foreach (var tag in cacheItem.Tags) {
_tagCache.Tag(tag, _cacheKey);
Logger.Debug("Item '{0}' was written to cache.", _cacheKey);
// Also add the item tags to the tag cache.
var tagCache = scope.Resolve<ITagCache>();
foreach (var tag in cacheItem.Tags) {
tagCache.Tag(tag, _cacheKey);
}
}
}
finally {