public object Set([NotNull] string key, IEntryLink link, object state, [NotNull] Func <ICacheSetContext, object> create)
{
CheckDisposed();
CacheEntry priorEntry = null;
var now = _clock.UtcNow;
var context = new CacheSetContext(key)
{
State = state, CreationTime = now
};
object value = create(context);
var entry = new CacheEntry(context, value, _entryExpirationNotification);
bool added = false;
if (link != null)
{
// Copy triggers and AbsoluteExpiration to the link.
// We do this regardless of it gets cached because the triggers are associated with the value we'll return.
if (entry.Context.Triggers != null)
{
link.AddExpirationTriggers(entry.Context.Triggers);
}
if (entry.Context.AbsoluteExpiration.HasValue)
{
link.SetAbsoluteExpiration(entry.Context.AbsoluteExpiration.Value);
}
}
_entryLock.EnterWriteLock();
try
{
if (_entries.TryGetValue(key, out priorEntry))
{
_entries.Remove(key);
priorEntry.SetExpired(EvictionReason.Replaced);
}
if (!entry.CheckExpired(now))
{
_entries[key] = entry;
entry.AttachTriggers();
added = true;
}
}
finally
{
_entryLock.ExitWriteLock();
}
if (priorEntry != null)
{
priorEntry.InvokeEvictionCallbacks();
}
if (!added)
{
entry.InvokeEvictionCallbacks();
}
StartScanForExpiredItems();
return(value);
}
internal CacheEntry(CacheSetContext context, object value, Action<CacheEntry> notifyCacheOfExpiration)
{
Context = context;
Value = value;
_notifyCacheOfExpiration = notifyCacheOfExpiration;
LastAccessed = context.CreationTime;
}
internal CacheEntry(CacheSetContext context, object value, Action <CacheEntry> notifyCacheOfExpiration)
{
Context = context;
Value = value;
_notifyCacheOfExpiration = notifyCacheOfExpiration;
LastAccessed = context.CreationTime;
}
public async Task <object> SetAsync([NotNull] string key, IEntryLink link, object state, [NotNull] Func <ICacheSetContext, Task <object> > create)
{
CheckDisposed();
var context = new CacheSetContext(key)
{
State = state, CreationTime = _clock.UtcNow
};
object value = await create(context);
SetInternal(context, link, value);
return(value);
}
private void SetInternal(CacheSetContext context, IEntryLink link, object value)
{
CacheEntry priorEntry = null;
var entry = new CacheEntry(context, value, _entryExpirationNotification);
bool added = false;
if (link != null)
{
// Copy triggers and AbsoluteExpiration to the link.
// We do this regardless of it gets cached because the triggers are associated with the value we'll return.
if (entry.Context.Triggers != null)
{
link.AddExpirationTriggers(entry.Context.Triggers);
}
if (entry.Context.AbsoluteExpiration.HasValue)
{
link.SetAbsoluteExpiration(entry.Context.AbsoluteExpiration.Value);
}
}
_entryLock.EnterWriteLock();
try
{
if (_entries.TryGetValue(context.Key, out priorEntry))
{
_entries.Remove(context.Key);
priorEntry.SetExpired(EvictionReason.Replaced);
}
if (!entry.CheckExpired(context.CreationTime))
{
_entries[context.Key] = entry;
entry.AttachTriggers();
added = true;
}
}
finally
{
_entryLock.ExitWriteLock();
}
if (priorEntry != null)
{
priorEntry.InvokeEvictionCallbacks();
}
if (!added)
{
entry.InvokeEvictionCallbacks();
}
StartScanForExpiredItems();
}
