private bool LockAndLoadMedia(Func <bool> action)
{
// see note in LockAndLoadContent
using (_mediaStore.GetScopedWriteLock(_scopeProvider))
using (var scope = _scopeProvider.CreateScope())
{
scope.ReadLock(Constants.Locks.MediaTree);
var ok = action();
scope.Complete();
return(ok);
}
}
// sudden panic... but in RepeatableRead can a content that I haven't already read, be removed
// before I read it? NO! because the WHOLE content tree is read-locked using WithReadLocked.
// don't panic.
private bool LockAndLoadContent(Func <bool> action)
{
// first get a writer, then a scope
// if there already is a scope, the writer will attach to it
// otherwise, it will only exist here - cheap
using (_contentStore.GetScopedWriteLock(_scopeProvider))
using (var scope = _scopeProvider.CreateScope())
{
scope.ReadLock(Constants.Locks.ContentTree);
var ok = action();
scope.Complete();
return(ok);
}
}
private void Notify <T>(ContentStore store, ContentTypeCacheRefresher.JsonPayload[] payloads, Action <List <int>, List <int>, List <int>, List <int> > action)
where T : IContentTypeComposition
{
if (payloads.Length == 0)
{
return; // nothing to do
}
var nameOfT = typeof(T).Name;
List <int> removedIds = null, refreshedIds = null, otherIds = null, newIds = null;
foreach (var payload in payloads)
{
if (payload.ItemType != nameOfT)
{
continue;
}
if (payload.ChangeTypes.HasType(ContentTypeChangeTypes.Remove))
{
AddToList(ref removedIds, payload.Id);
}
else if (payload.ChangeTypes.HasType(ContentTypeChangeTypes.RefreshMain))
{
AddToList(ref refreshedIds, payload.Id);
}
else if (payload.ChangeTypes.HasType(ContentTypeChangeTypes.RefreshOther))
{
AddToList(ref otherIds, payload.Id);
}
else if (payload.ChangeTypes.HasType(ContentTypeChangeTypes.Create))
{
AddToList(ref newIds, payload.Id);
}
}
if (removedIds.IsCollectionEmpty() && refreshedIds.IsCollectionEmpty() && otherIds.IsCollectionEmpty() && newIds.IsCollectionEmpty())
{
return;
}
using (store.GetScopedWriteLock(_scopeProvider))
{
action(removedIds, refreshedIds, otherIds, newIds);
}
}