/// <summary>
/// Registers callback when an entry with corresponding key expires
/// </summary>
/// <param name="key"></param>
/// <param name="action"></param>
public override void OnExpire(string key, Action <CacheEntry> action)
{
var hasEntry = EntryExpirationCallbacks.TryGetValue(key, out ConcurrentBag <Action <CacheEntry> > callbacks);
if (!hasEntry)
{
callbacks = new ConcurrentBag <Action <CacheEntry> >();
EntryExpirationCallbacks.TryAdd(key, callbacks);
}
callbacks.Add(action);
}
/// <summary>
/// Invokes callbacks on expiration
/// </summary>
/// <param name="key"></param>
public override void InvokeExpireCallbacks(string key)
{
var entry = Configuration.DataProvider.Get(key);
foreach (var globalCallback in GlobalExpirationCallbacks)
{
globalCallback(entry);
}
if (!EntryExpirationCallbacks.ContainsKey(key))
{
return;
}
foreach (var entryCallback in EntryExpirationCallbacks[key])
{
entryCallback(entry);
}
}
