public static async Task <Tuple <bool, IComposedObject <T> > > CreateAsync([NotNull] ICacheClient redis, [NotNull] T dataObject, CancellationToken cancellationToken)
{
if (redis == null)
{
throw new ArgumentNullException(nameof(redis));
}
if (dataObject == null)
{
throw new ArgumentNullException(nameof(dataObject));
}
var ret = new ComposedObject <T>(dataObject);
var perfect = true;
var taskLocation = Task.Run(
async() =>
{
var composedLocation = await CacheManager.LookupOrRetrieveAsync <ObjectBase>(dataObject.Location, redis, async(d, token) => await Room.GetAsync(redis, dataObject.Location, token), cancellationToken);
ret.Location = composedLocation;
perfect = perfect && (dataObject.Location <= 0 || composedLocation != null);
},
cancellationToken);
if (dataObject.Contents != null)
{
var contents = new List <IComposedObject <ObjectBase> >();
Parallel.ForEach(
dataObject.Contents,
async dbref =>
{
var composedContent = await CacheManager.LookupOrRetrieveAsync(dbref, redis, async(d, token) => await ObjectBase.GetAsync(redis, d, token), cancellationToken);
if (composedContent != null)
{
contents.Add(composedContent);
}
perfect = perfect && (dbref <= 0 || composedContent != null);
});
ret.Contents = contents.AsReadOnly();
}
var taskParent = Task.Run(
async() =>
{
var composedParent = await CacheManager.LookupOrRetrieveAsync(dataObject.Parent, redis, async(d, token) => await ObjectBase.GetAsync(redis, dataObject.Parent, token), cancellationToken);
ret.Parent = composedParent;
perfect = perfect && (dataObject.Parent <= 0 || composedParent != null);
},
cancellationToken);
// ReSharper disable once PossibleNullReferenceException
await Task.WhenAll(taskLocation, taskParent);
return(new Tuple <bool, IComposedObject <T> >(perfect, ret));
}
public static async Task <IComposedObject <T> > LookupOrRetrieveAsync <T>(
DbRef reference,
[NotNull] ICacheClient redis,
[NotNull] Func <DbRef, CancellationToken, Task <T> > retrieveFunction,
CancellationToken cancellationToken) where T : ObjectBase
{
if (reference.Equals(DbRef.Ambiguous) || reference.Equals(DbRef.FailedMatch) ||
reference.Equals(DbRef.Nothing))
{
return(null);
}
if (redis == null)
{
throw new ArgumentNullException(nameof(redis));
}
if (retrieveFunction == null)
{
throw new ArgumentNullException(nameof(retrieveFunction));
}
if (reference.Equals(DbRef.Nothing))
{
return(null);
}
if (Cache.Contains(reference))
{
return((IComposedObject <T>)Cache.Get(reference));
}
var obj = await retrieveFunction.Invoke(reference, cancellationToken);
if (obj == null)
{
return(null);
}
var composition = await ComposedObject <T> .CreateAsync(redis, obj, cancellationToken);
if (composition.Item1)
{
// The composition was perfect! No unresolved references, so cache it as-is.
Cache.Add(reference, composition.Item2, Policy);
}
return(composition.Item2);
}
public static async Task <IComposedObject <T> > UpdateAsync <T>(
DbRef reference,
[NotNull] ICacheClient redis,
[NotNull] T updatedDataObject,
CancellationToken cancellationToken)
where T : ObjectBase
{
if (Cache.Contains(reference))
{
Cache.Remove(reference);
}
var composition = await ComposedObject <T> .CreateAsync(redis, updatedDataObject, cancellationToken);
if (composition.Item1)
{
// The composition was perfect! No unresolved references, so cache it as-is.
Cache.Add(reference, composition.Item2, Policy);
}
return(composition.Item2);
}
