/// <summary>
/// Gets the or add existing.
/// </summary>
/// <remarks>
/// Because ComponentCacheDuration is determined by the channel, this class needs it's own GetOrAddExisting
/// method.
/// </remarks>
/// <param name="key">The key.</param>
/// <param name="valueFactory">The value factory.</param>
/// <returns></returns>
private static InteractionComponentCache GetOrAddExisting(string key, Func <InteractionComponentCache> valueFactory)
{
RockMemoryCache cache = RockMemoryCache.Default;
InteractionComponentCache cacheValue = cache.Get(key) as InteractionComponentCache;
if (cacheValue != null)
{
return(cacheValue);
}
InteractionComponentCache value = valueFactory();
if (value != null)
{
// Because the cache policy for interaction components is defined on the channel, get the channel.
int?cacheDuration = null;
var channel = InteractionChannelCache.Read(value.ChannelId);
if (channel != null)
{
cacheDuration = channel.ComponentCacheDuration;
}
if (!cacheDuration.HasValue || cacheDuration.Value > 0)
{
var cacheItemPolicy = new CacheItemPolicy();
if (cacheDuration.HasValue)
{
cacheItemPolicy.AbsoluteExpiration = DateTimeOffset.Now.AddSeconds(cacheDuration.Value);
}
cache.Set(key, value, cacheItemPolicy);
}
}
return(value);
}
/// <summary>
/// Removes interactionChannel from cache
/// </summary>
/// <param name="id"></param>
public static void Flush(int id)
{
FlushCache(InteractionChannelCache.CacheKey(id));
}
/// <summary>
/// Reads the specified model.
/// </summary>
/// <param name="interactionChannelModel">The model.</param>
/// <param name="rockContext">The rock context.</param>
/// <returns></returns>
public static InteractionChannelCache Read(InteractionChannel interactionChannelModel, RockContext rockContext = null)
{
return(GetOrAddExisting(InteractionChannelCache.CacheKey(interactionChannelModel.Id),
() => LoadByModel(interactionChannelModel)));
}
/// <summary>
/// Returns InteractionChannel object from cache. If interactionChannel does not already exist in cache, it
/// will be read and added to cache
/// </summary>
/// <param name="id">The identifier.</param>
/// <param name="rockContext">The rock context.</param>
/// <returns></returns>
public static InteractionChannelCache Read(int id, RockContext rockContext = null)
{
return(GetOrAddExisting(InteractionChannelCache.CacheKey(id),
() => LoadById(id, rockContext)));
}