public async Task <(bool success, Stream result)> TryOpenReadAsync(IDocument entry, CancellationToken ct)
{
string name = entry.FullPath();
var v = await Store.TryGet(name);
if (!RequestLockManager.GetStatus(name).Is(RequestStatus.IgnoreCache))
{
await Predictor.Request(name);
}
return(v);
}
public async Task TryOpenReadAsync_Bubbleup(IDocument entry, Stream result, CancellationToken ct)
{
string name = entry.FullPath();
if (!RequestLockManager.GetStatus(name).Is(RequestStatus.IgnoreCache))
{
int key = rand.Next();
activePredicitveFillKey = key;
await Predictor.Request_Bubbleup(name);
ThreadPool.QueueUserWorkItem(async(x) => await PredicitiveFillCache(key, ct));
}
}
public async Task TryOpenReadAsync_Bubbleup(IDocument entry, Stream result, CancellationToken ct)
{
string name = entry.FullPath();
if (!IgnoreIgnoreCache && RequestLockManager.GetStatus(name).Is(RequestStatus.IgnoreCache))
{
return;
}
if (result.CanSeek)
{
if (result is IDelayedDisposable)
{
(result as IDelayedDisposable).OnDisposeAsync.Add(async() => {
result.Position = 0;
await Store.TryPut(name, result);
});
}
else
{
await Store.TryPut(name, result);
result.Position = 0;
}
RequestLockManager.AddStatus(name, RequestStatus.Cached);
}
else if (result is PushReadStream &&
!RequestLockManager.GetStatus(name).Is(RequestStatus.IgnoreCache) &&
await Allocator.TryAllocate(name, () => Task.FromResult(entry), () => Task.FromResult(result))
)
{
PushReadStream prs = result as PushReadStream;
prs.AddListener(new DocumentCacheStreamListener(prs, this, name));
RequestLockManager.AddStatus(name, RequestStatus.Cached);
}
}