private async Task GetPackageDependencies(string registrationBaseUrl, string packageId, NuGetVersion version, NuGetFramework targetFramework, ConcurrentDictionary <PackageDependencyInfo, string> packages)
{
var package = await GetRegistrationLeaf(registrationBaseUrl, packageId, version);
var packageIdentity = new PackageDependencyInfo
{
Id = package.CatalogEntry.PackageId,
Version = package.CatalogEntry.Version
};
if (!packages.TryAdd(packageIdentity, package.PackageContent))
{
return;
}
Console.WriteLine($"Fetched {package.PackageContent}");
try
{
if (package.CatalogEntry.DependencyGroups == null)
{
return;
}
var reducer = new FrameworkReducer();
var frameworks = package.CatalogEntry.DependencyGroups.Select(x => x.TargetFramework);
var nearest = reducer.GetNearest(targetFramework, frameworks);
var neareastDependencyGroup = package.CatalogEntry.DependencyGroups
.First(x => nearest.Equals(x.TargetFramework));
if (neareastDependencyGroup.Dependencies != null)
{
await Task.WhenAll(neareastDependencyGroup.Dependencies.Select(x =>
{
var dependency = new PackageIdentity
{
Id = x.Id,
Version = x.Range.MinVersion
};
packageIdentity.Dependencies.Add(dependency);
return(GetPackageDependencies(registrationBaseUrl, dependency.Id, dependency.Version, targetFramework, packages));
}));
}
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
}
private static IEnumerable <PackageIdentity> PrunePackages(PackageDependencyInfo target, ISet <PackageDependencyInfo> availablePackages)
{
// Get all duplicate Ids. Sort by version and remove all but highest.
var packagesToRemove = new HashSet <PackageIdentity>(availablePackages
.GroupBy(x => x.Id)
.Where(x => x.Count() > 1)
.SelectMany(x => x.OrderByDescending(p => p.Version, VersionComparer.Default).Skip(1)),
PackageIdentityComparer.Default);
packagesToRemove.Add(new PackageDependencyInfo
{
Id = "NETStandard.Library",
Version = new NuGetVersion(1, 6, 1)
});
var packagesSet = new HashSet <PackageIdentity>(PackageIdentityComparer.Default);
PrunePackages(target, availablePackages, packagesToRemove, packagesSet);
return(packagesSet);
}
