public virtual ICacheEntry CreateEntry(object key)
{
var result = _memoryCache.CreateEntry(key);
if (result != null)
{
result.RegisterPostEvictionCallback(callback: EvictionCallback);
var options = GetDefaultCacheEntryOptions();
//Add GlobalCache token for each entry
options.AddExpirationToken(GlobalCacheRegion.CreateChangeToken());
result.SetOptions(options);
}
return(result);
}
public MemoryCacheEntryOptions GetDefaultCacheEntryOptions()
{
var result = new MemoryCacheEntryOptions();
if (!CacheEnabled)
{
result.AbsoluteExpirationRelativeToNow = TimeSpan.FromTicks(1);
}
else
{
if (AbsoluteExpiration != null)
{
result.AbsoluteExpirationRelativeToNow = AbsoluteExpiration;
}
else if (SlidingExpiration != null)
{
result.SlidingExpiration = SlidingExpiration;
}
result.AddExpirationToken(GlobalCacheRegion.CreateChangeToken());
}
return(result);
}
public void CreateChangeTokenReturnsCompositeToken()
{
//Act
var token = CacheRegion.CreateChangeTokenForKey("key");
//Assertion
Assert.IsType <CompositeChangeToken>(token);
//Tokens for item, region and global
Assert.Equal(3, ((CompositeChangeToken)token).ChangeTokens.Count);
Assert.All(((CompositeChangeToken)token).ChangeTokens, x => Assert.IsType <LazyCancellationChangeToken>(x));
//Act
token = CacheRegion.CreateChangeToken();
//Assertion
Assert.IsType <CompositeChangeToken>(token);
//Tokens for item, region and global
Assert.Equal(2, ((CompositeChangeToken)token).ChangeTokens.Count);
Assert.All(((CompositeChangeToken)token).ChangeTokens, x => Assert.IsType <LazyCancellationChangeToken>(x));
//Act
token = GlobalCacheRegion.CreateChangeToken();
//Assertion
Assert.IsType <LazyCancellationChangeToken>(token);
}