public async Task <bool> ExecuteAsync()
{
DestinationFolder = DestinationFolder.Replace('\\', '/');
var requests = new List <PackageDownloadRequest>();
var files = new List <ITaskItem>();
var downloadCount = 0;
foreach (var item in Packages)
{
var id = item.ItemSpec;
var rawVersion = item.GetMetadata("Version");
if (!NuGetVersion.TryParse(rawVersion, out var version))
{
Log.LogError($"Package '{id}' has an invalid 'Version' metadata value: '{rawVersion}'.");
return(false);
}
var source = item.GetMetadata("Source");
if (string.IsNullOrEmpty(source))
{
Log.LogError($"Package '{id}' is missing the 'Source' metadata value.");
return(false);
}
var outputPath = Path.Combine(DestinationFolder, $"{id.ToLowerInvariant()}.{version.ToNormalizedString()}.nupkg");
files.Add(new TaskItem(outputPath));
if (File.Exists(outputPath))
{
Log.LogMessage($"Skipping {id} {version}. Already exists in '{outputPath}'");
continue;
}
else
{
downloadCount++;
var request = new PackageDownloadRequest
{
Identity = new PackageIdentity(id, version),
OutputPath = outputPath,
Sources = source.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries),
};
requests.Add(request);
}
}
Files = files.ToArray();
if (downloadCount == 0)
{
Log.LogMessage("All packages are downloaded.");
return(true);
}
Directory.CreateDirectory(DestinationFolder);
var logger = new MSBuildLogger(Log);
var timeout = TimeSpan.FromSeconds(TimeoutSeconds);
var downloader = new PackageDownloader(logger);
var timer = Stopwatch.StartNew();
var result = await downloader.DownloadPackagesAsync(requests, timeout, _cts.Token);
timer.Stop();
logger.LogMinimal($"Finished downloading {requests.Count} package(s) in {timer.ElapsedMilliseconds}ms");
return(result);
}