private async Task <IReadOnlyList <Package> > FindPackagesOrNullAsync(
string packageId,
CancellationToken cancellationToken)
{
var upstreamPackages = await _mirror.FindPackagesOrNullAsync(packageId, cancellationToken);
var localPackages = await _packages.FindAsync(packageId, includeUnlisted : true, cancellationToken);
if (upstreamPackages == null)
{
return(localPackages.Any()
? localPackages
: null);
}
// Mrge the local packages into the upstream packages.
var result = upstreamPackages.ToDictionary(p => new PackageIdentity(p.Id, p.Version));
var local = localPackages.ToDictionary(p => new PackageIdentity(p.Id, p.Version));
foreach (var localPackage in local)
{
result[localPackage.Key] = localPackage.Value;
}
return(result.Values.ToList());
}
public async Task <IActionResult> Get(string id, CancellationToken cancellationToken)
{
// Find the packages that match the given package id from the upstream, if
// one is configured. If these packages cannot be found on the upstream,
// we'll return the local packages instead.
var packages = await _mirror.FindPackagesOrNullAsync(id, cancellationToken);
if (packages == null)
{
packages = await _packages.FindAsync(id, includeUnlisted : true);
}
if (!packages.Any())
{
return(NotFound());
}
var versions = packages.Select(p => p.Version).ToList();
// TODO: Paging of registration items.
// "Un-paged" example: https://api.nuget.org/v3/registration3/newtonsoft.json/index.json
// Paged example: https://api.nuget.org/v3/registration3/fake/index.json
return(Json(new RegistrationIndex(
count: packages.Count,
totalDownloads: packages.Sum(p => p.Downloads),
pages: new[]
{
new RegistrationIndexPage(
Url.PackageRegistration(packages.First().Id),
count: packages.Count(),
itemsOrNull: packages.Select(ToRegistrationIndexPageItem).ToList(),
lower: versions.Min(),
upper: versions.Max())
})));
}
public async Task <BaGetRegistrationIndexResponse> GetRegistrationIndexOrNullAsync(
string id,
CancellationToken cancellationToken = default)
{
// Find the packages that match the given package id from the upstream, if
// one is configured. If these packages cannot be found on the upstream,
// we'll return the local packages instead.
var packages = await _mirror.FindPackagesOrNullAsync(id, cancellationToken);
if (packages == null)
{
packages = await _packages.FindAsync(id, includeUnlisted : true);
}
if (!packages.Any())
{
return(null);
}
var versions = packages.Select(p => p.Version).ToList();
// TODO: Paging of registration items.
// "Un-paged" example: https://api.nuget.org/v3/registration3/newtonsoft.json/index.json
// Paged example: https://api.nuget.org/v3/registration3/fake/index.json
return(new BaGetRegistrationIndexResponse
{
RegistrationIndexUrl = _url.GetRegistrationIndexUrl(id),
Type = RegistrationIndexResponse.DefaultType,
Count = 1,
TotalDownloads = packages.Sum(p => p.Downloads),
Pages = new[]
{
new RegistrationIndexPage
{
RegistrationPageUrl = _url.GetRegistrationIndexUrl(packages.First().Id),
Count = packages.Count(),
Lower = versions.Min().ToNormalizedString().ToLowerInvariant(),
Upper = versions.Max().ToNormalizedString().ToLowerInvariant(),
ItemsOrNull = packages.Select(ToRegistrationIndexPageItem).ToList(),
}
}
});
}
