private IPackageFeedSearchJob <IPackageInfo> Compute(string packageId, string version, string tfm)
{
IPackageQueryConfiguration config = new PackageQueryConfiguration(tfm);
List <Tuple <string, Task <IReadOnlyList <IPackageInfo> > > > searchTasks = new List <Tuple <string, Task <IReadOnlyList <IPackageInfo> > > >();
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
CancellationToken cancellationToken = cancellationTokenSource.Token;
foreach (string feedSource in _feedRegistry.ConfiguredFeeds)
{
IPackageFeed feed = _factorySelector.GetFeed(feedSource);
if (feed != null)
{
searchTasks.Add(Tuple.Create(feedSource, feed.GetPackageInfoAsync(packageId, version, config, cancellationToken).ContinueWith(x =>
{
if (x == null || x.IsFaulted || x.IsCanceled)
{
return(new IPackageInfo[0]);
}
return((IReadOnlyList <IPackageInfo>) new[] { x.Result });
})));
}
}
return(new PackageFeedSearchJob <IPackageInfo>(searchTasks, cancellationTokenSource));
}
public IPackageFeedSearchJob <Tuple <string, FeedKind> > SearchPackageNames(string prefix, string tfm)
{
PackageQueryConfiguration config = new PackageQueryConfiguration(tfm);
var bag = _cachedNameSearches.GetOrAdd(config, x => new ConcurrentDictionary <PackageNameQuery, IPackageFeedSearchJob <Tuple <string, FeedKind> > >());
return(bag.AddOrUpdate(new PackageNameQuery(prefix, tfm), x => SearchPackageNamesInternal(prefix, tfm, config), (x, e) =>
{
if (e.IsCancelled)
{
return SearchPackageNamesInternal(prefix, tfm, config);
}
return e;
}));
}
