public Task <bool> CanInstallAsync(InstallRequest installationRequest, CancellationToken cancellationToken)
{
try
{
ReadPackageInformation(installationRequest.PackageIdentifier);
}
catch (Exception)
{
_logger.LogDebug($"{installationRequest.PackageIdentifier} is not a local NuGet package.");
//check if identifier is a valid package ID
bool validPackageId = PackageIdValidator.IsValidPackageId(installationRequest.PackageIdentifier);
//check if version is specified it is correct version
bool hasValidVersion = NuGetVersionHelper.IsSupportedVersionString(installationRequest.Version);
if (!validPackageId)
{
_logger.LogDebug($"{installationRequest.PackageIdentifier} is not a valid NuGet package ID.");
}
if (!hasValidVersion)
{
_logger.LogDebug($"{installationRequest.Version} is not a valid NuGet package version.");
}
if (validPackageId && hasValidVersion)
{
_logger.LogDebug($"{installationRequest.DisplayName} is identified as the downloadable NuGet package.");
}
//not a local package file
return(Task.FromResult(validPackageId && hasValidVersion));
}
_logger.LogDebug($"{installationRequest.PackageIdentifier} is identified as the local NuGet package.");
return(Task.FromResult(true));
}
public async Task <NuGetPackageInfo> DownloadPackageAsync(string downloadPath, string identifier, string?version = null, IEnumerable <string>?additionalSources = null, bool force = false, CancellationToken cancellationToken = default)
{
if (string.IsNullOrWhiteSpace(identifier))
{
throw new ArgumentException($"{nameof(identifier)} cannot be null or empty", nameof(identifier));
}
if (string.IsNullOrWhiteSpace(identifier))
{
throw new ArgumentException($"{nameof(downloadPath)} cannot be null or empty", nameof(downloadPath));
}
IEnumerable <PackageSource> packagesSources = LoadNuGetSources(additionalSources?.ToArray() ?? Array.Empty <string>());
PackageSource source;
IPackageSearchMetadata packageMetadata;
if (NuGetVersionHelper.TryParseFloatRangeEx(version, out FloatRange floatRange))
{
(source, packageMetadata) =
await GetLatestVersionInternalAsync(
identifier,
packagesSources,
floatRange,
cancellationToken)
.ConfigureAwait(false);
}
else
{
NuGetVersion packageVersion = new NuGetVersion(version);
(source, packageMetadata) = await GetPackageMetadataAsync(identifier, packageVersion, packagesSources, cancellationToken).ConfigureAwait(false);
}
FindPackageByIdResource resource;
SourceRepository repository = _sourcesCache.GetOrAdd(source, Repository.Factory.GetCoreV3(source));
try
{
resource = await repository.GetResourceAsync <FindPackageByIdResource>(cancellationToken).ConfigureAwait(false);
}
catch (Exception e)
{
_nugetLogger.LogError(string.Format(LocalizableStrings.NuGetApiPackageManager_Error_FailedToLoadSource, source.Source));
_nugetLogger.LogDebug($"Details: {e.ToString()}.");
throw new InvalidNuGetSourceException("Failed to load NuGet source", new[] { source.Source }, e);
}
string filePath = Path.Combine(downloadPath, packageMetadata.Identity.Id + "." + packageMetadata.Identity.Version + ".nupkg");
if (!force && _environmentSettings.Host.FileSystem.FileExists(filePath))
{
_nugetLogger.LogError(string.Format(LocalizableStrings.NuGetApiPackageManager_Error_FileAlreadyExists, filePath));
throw new DownloadException(packageMetadata.Identity.Id, packageMetadata.Identity.Version.ToNormalizedString(), new[] { source.Source });
}
try
{
using Stream packageStream = _environmentSettings.Host.FileSystem.CreateFile(filePath);
if (await resource.CopyNupkgToStreamAsync(
packageMetadata.Identity.Id,
packageMetadata.Identity.Version,
packageStream,
_cacheSettings,
_nugetLogger,
cancellationToken).ConfigureAwait(false))
{
return(new NuGetPackageInfo(
packageMetadata.Authors,
filePath,
source.Source,
packageMetadata.Identity.Id,
packageMetadata.Identity.Version.ToNormalizedString()
));
}
else
{
_nugetLogger.LogWarning(
string.Format(
LocalizableStrings.NuGetApiPackageManager_Warning_FailedToDownload,
$"{packageMetadata.Identity.Id}::{packageMetadata.Identity.Version}",
source.Source));
try
{
_environmentSettings.Host.FileSystem.FileDelete(filePath);
}
catch (Exception ex)
{
_nugetLogger.LogWarning(
string.Format(
LocalizableStrings.NuGetApiPackageManager_Warning_FailedToDelete,
filePath));
_nugetLogger.LogDebug($"Details: {ex.ToString()}.");
}
throw new DownloadException(packageMetadata.Identity.Id, packageMetadata.Identity.Version.ToNormalizedString(), new[] { source.Source });
}
}
catch (Exception e)
{
_nugetLogger.LogWarning(
string.Format(
LocalizableStrings.NuGetApiPackageManager_Warning_FailedToDownload,
$"{packageMetadata.Identity.Id}::{packageMetadata.Identity.Version}",
source.Source));
_nugetLogger.LogDebug($"Details: {e.ToString()}.");
try
{
_environmentSettings.Host.FileSystem.FileDelete(filePath);
}
catch (Exception ex)
{
_nugetLogger.LogWarning(
string.Format(
LocalizableStrings.NuGetApiPackageManager_Warning_FailedToDelete,
filePath));
_nugetLogger.LogDebug($"Details: {ex.ToString()}.");
}
throw new DownloadException(packageMetadata.Identity.Id, packageMetadata.Identity.Version.ToNormalizedString(), new[] { source.Source }, e.InnerException);
}
}