public MetaDataItem[] GetMetaDatas(MetaDataCacheKey key, Func <IEnumerable <MetaDataItem> > factory)
{
return(this.Values.GetOrAdd(
key,
_key => new Lazy <MetaDataItem[]>(() => factory().ToArray())
).Value);
}
public async Task <MetaDataItem[]> GetMetaDatas(MetaDataCacheKey key, Func <Task <IEnumerable <MetaDataItem> > > factory)
{
var value = default(Lazy <MetaDataItem[]>);
if (this.Values.TryGetValue(key, out value))
{
return(value.Value);
}
using (await KeyLock.LockAsync(key).ConfigureAwait(false))
{
if (this.Values.TryGetValue(key, out value))
{
return(value.Value);
}
var metaDataItems = await factory().ConfigureAwait(false);
return(this.Values.GetOrAdd(key, _key => new Lazy <MetaDataItem[]>(() => metaDataItems.ToArray())).Value);
}
}
public Task <MetaDataItem[]> GetMetaDatasAsync(LibraryHierarchyNode libraryHierarchyNode, MetaDataItemType?metaDataItemType, string metaDataItemName)
{
var key = new MetaDataCacheKey(libraryHierarchyNode, metaDataItemType, metaDataItemName, this.LibraryHierarchyBrowser.Filter);
return(this.MetaDataCache.GetMetaDatas(key, () => this.GetMetaDatasCoreAsync(libraryHierarchyNode, metaDataItemType, metaDataItemName)));
}
public Task <MetaDataItem[]> GetMetaDatasAsync(IEnumerable <PlaylistItem> playlistItems, MetaDataItemType?metaDataItemType, string metaDataItemName)
{
var key = new MetaDataCacheKey(playlistItems.ToArray(), metaDataItemType, metaDataItemName, this.LibraryHierarchyBrowser.Filter);
return(this.MetaDataCache.GetMetaDatas(key, () => this.GetMetaDatasCoreAsync(playlistItems, metaDataItemType, metaDataItemName)));
}
public void Evict(MetaDataCacheKey key)
{
Logger.Write(this, LogLevel.Debug, "Evicting cache entry: {0}", key);
this.Values.TryRemove(key);
}
