public static async Task <bool> RestoreAsync(
DependencyGraphSpec dependencyGraphSpec,
bool interactive,
bool recursive,
bool noCache,
bool ignoreFailedSources,
bool disableParallel,
bool force,
bool forceEvaluate,
bool hideWarningsAndErrors,
bool restorePC,
bool cleanupAssetsForUnsupportedProjects,
Common.ILogger log,
CancellationToken cancellationToken)
{
if (dependencyGraphSpec == null)
{
throw new ArgumentNullException(nameof(dependencyGraphSpec));
}
if (log == null)
{
throw new ArgumentNullException(nameof(log));
}
try
{
DefaultCredentialServiceUtility.SetupDefaultCredentialService(log, !interactive);
// Set connection limit
NetworkProtocolUtility.SetConnectionLimit();
// Set user agent string used for network calls
#if IS_CORECLR
UserAgent.SetUserAgentString(new UserAgentStringBuilder("NuGet .NET Core MSBuild Task")
.WithOSDescription(RuntimeInformation.OSDescription));
#else
// OS description is set by default on Desktop
UserAgent.SetUserAgentString(new UserAgentStringBuilder("NuGet Desktop MSBuild Task"));
#endif
X509TrustStore.InitializeForDotNetSdk(log);
var restoreSummaries = new List <RestoreSummary>();
var providerCache = new RestoreCommandProvidersCache();
#if IS_DESKTOP
if (restorePC && dependencyGraphSpec.Projects.Any(i => i.RestoreMetadata.ProjectStyle == ProjectStyle.PackagesConfig))
{
var v2RestoreResult = await PerformNuGetV2RestoreAsync(log, dependencyGraphSpec, noCache, disableParallel, interactive);
restoreSummaries.Add(v2RestoreResult);
if (restoreSummaries.Count < 1)
{
var message = string.Format(
Strings.InstallCommandNothingToInstall,
"packages.config"
);
log.LogMinimal(message);
}
if (!v2RestoreResult.Success)
{
v2RestoreResult
.Errors
.Where(l => l.Level == LogLevel.Warning)
.ForEach(message =>
{
log.LogWarning(message.Message);
});
}
}
#endif
using (var cacheContext = new SourceCacheContext())
{
cacheContext.NoCache = noCache;
cacheContext.IgnoreFailedSources = ignoreFailedSources;
// Pre-loaded request provider containing the graph file
var providers = new List <IPreLoadedRestoreRequestProvider>();
if (dependencyGraphSpec.Restore.Count > 0)
{
// Add all child projects
if (recursive)
{
AddAllProjectsForRestore(dependencyGraphSpec);
}
providers.Add(new DependencyGraphSpecRequestProvider(providerCache, dependencyGraphSpec));
var restoreContext = new RestoreArgs()
{
CacheContext = cacheContext,
LockFileVersion = LockFileFormat.Version,
// 'dotnet restore' fails on slow machines (https://github.com/NuGet/Home/issues/6742)
// The workaround is to pass the '--disable-parallel' option.
// We apply the workaround by default when the system has 1 cpu.
// This will fix restore failures on VMs with 1 CPU and containers with less or equal to 1 CPU assigned.
DisableParallel = Environment.ProcessorCount == 1 ? true : disableParallel,
Log = log,
MachineWideSettings = new XPlatMachineWideSetting(),
PreLoadedRequestProviders = providers,
AllowNoOp = !force,
HideWarningsAndErrors = hideWarningsAndErrors,
RestoreForceEvaluate = forceEvaluate
};
if (restoreContext.DisableParallel)
{
HttpSourceResourceProvider.Throttle = SemaphoreSlimThrottle.CreateBinarySemaphore();
}
cancellationToken.ThrowIfCancellationRequested();
restoreSummaries.AddRange(await RestoreRunner.RunAsync(restoreContext, cancellationToken));
}
if (cleanupAssetsForUnsupportedProjects)
{
// Restore assets are normally left on disk between restores for all projects. This can cause a condition where a project that supports PackageReference was restored
// but then a user changes a branch or some other condition and now the project does not use PackageReference. Since the restore assets are left on disk, the build
// consumes them which can cause build errors. The code below cleans up all of the files that we write so that they are not used during build
Parallel.ForEach(dependencyGraphSpec.Projects.Where(i => !DoesProjectSupportRestore(i)), project =>
{
if (project.RestoreMetadata == null || string.IsNullOrWhiteSpace(project.RestoreMetadata.OutputPath) || string.IsNullOrWhiteSpace(project.RestoreMetadata.ProjectPath))
{
return;
}
// project.assets.json
FileUtility.Delete(Path.Combine(project.RestoreMetadata.OutputPath, LockFileFormat.AssetsFileName));
// project.csproj.nuget.cache
FileUtility.Delete(project.RestoreMetadata.CacheFilePath);
// project.csproj.nuget.g.props
FileUtility.Delete(BuildAssetsUtils.GetMSBuildFilePathForPackageReferenceStyleProject(project, BuildAssetsUtils.PropsExtension));
// project..csproj.nuget.g.targets
FileUtility.Delete(BuildAssetsUtils.GetMSBuildFilePathForPackageReferenceStyleProject(project, BuildAssetsUtils.TargetsExtension));
// project.csproj.nuget.dgspec.json
FileUtility.Delete(Path.Combine(project.RestoreMetadata.OutputPath, DependencyGraphSpec.GetDGSpecFileName(Path.GetFileName(project.RestoreMetadata.ProjectPath))));
});
}
}
if (restoreSummaries.Count < 1)
{
log.LogMinimal(Strings.NoProjectsToRestore);
}
else
{
RestoreSummary.Log(log, restoreSummaries);
}
return(restoreSummaries.All(x => x.Success));
}
finally
{
// The CredentialService lifetime is for the duration of the process. We should not leave a potentially unavailable logger.
// We need to update the delegating logger with a null instance
// because the tear downs of the plugins and similar rely on idleness and process exit.
DefaultCredentialServiceUtility.UpdateCredentialServiceDelegatingLogger(NullLogger.Instance);
}
}
