PackagePhysicalFileMetadata DownloadPackage(
string packageId,
IVersion version,
Uri feedUri,
ICredentials feedCredentials,
string cacheDirectory,
int maxDownloadAttempts,
TimeSpan downloadAttemptBackoff)
{
Log.Info("Downloading NuGet package {0} v{1} from feed: '{2}'", packageId, version, feedUri);
Log.VerboseFormat("Downloaded package will be stored in: '{0}'", cacheDirectory);
freeSpaceChecker.EnsureDiskHasEnoughFreeSpace(cacheDirectory);
var fullPathToDownloadTo = Path.Combine(cacheDirectory, PackageName.ToCachedFileName(packageId, version, ".nupkg"));
var downloader = new InternalNuGetPackageDownloader(fileSystem);
downloader.DownloadPackage(packageId,
version,
feedUri,
feedCredentials,
fullPathToDownloadTo,
maxDownloadAttempts,
downloadAttemptBackoff);
var pkg = PackagePhysicalFileMetadata.Build(fullPathToDownloadTo);
if (pkg == null)
{
throw new CommandException($"Package metadata for {packageId}, version {version}, could not be determined");
}
CheckWhetherThePackageHasDependencies(pkg);
return(pkg);
}
PackagePhysicalFileMetadata?AttemptToGetPackageFromCache(string packageId, IVersion version, string cacheDirectory)
{
Log.VerboseFormat("Checking package cache for package {0} v{1}", packageId, version.ToString());
var files = fileSystem.EnumerateFilesRecursively(cacheDirectory, PackageName.ToSearchPatterns(packageId, version, new[] { ".nupkg" }));
foreach (var file in files)
{
var package = PackageName.FromFile(file);
if (package == null)
{
continue;
}
var idMatches = string.Equals(package.PackageId, packageId, StringComparison.OrdinalIgnoreCase);
var versionExactMatch = string.Equals(package.Version.ToString(), version.ToString(), StringComparison.OrdinalIgnoreCase);
var nugetVerMatches = package.Version.Equals(version);
if (idMatches && (nugetVerMatches || versionExactMatch))
{
return(PackagePhysicalFileMetadata.Build(file, package));
}
}
return(null);
}