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);
}
public int AttemptsTheRightNumberOfTimesOnError(int maxDownloadAttempts)
{
var packageId = "FakePackageId";
var version = VersionFactory.CreateSemanticVersion(1, 2, 3);
var feedUri = new Uri("http://www.myget.org");
var feedCredentials = new CredentialCache();
var targetFilePath = "FakeTargetFilePath";
var filesystem = Substitute.For <ICalamariFileSystem>();
var variables = new CalamariVariables();
var calledCount = 0;
Assert.Throws <Exception>(() =>
{
var downloader = new InternalNuGetPackageDownloader(filesystem, variables);
downloader.DownloadPackage(packageId, version, feedUri, feedCredentials, targetFilePath, maxDownloadAttempts: maxDownloadAttempts, downloadAttemptBackoff: TimeSpan.Zero,
action: (arg1, arg2, arg3, arg4, arg5) =>
{
calledCount++;
throw new Exception("Expected exception from test: simulate download failing");
});
});
return(calledCount);
}
void RunNugetV3TimeoutTest(string timeoutInVariables, TimeSpan serverResponseTime, TimeSpan estimatedTimeout)
{
using (var server = new TestHttpServer(9001, serverResponseTime))
{
var packageId = "FakePackageId";
var version = VersionFactory.CreateSemanticVersion(1, 2, 3);
var feedCredentials = new CredentialCache();
var targetFilePath = "FakeTargetFilePath";
var filesystem = Substitute.For <ICalamariFileSystem>();
var v3NugetUri = new Uri(server.BaseUrl + "/index.json");
var variables = new CalamariVariables();
if (timeoutInVariables != null)
{
variables[KnownVariables.NugetHttpTimeout] = timeoutInVariables;
}
var downloader = new InternalNuGetPackageDownloader(filesystem, variables);
var stopwatch = new Stopwatch();
Action invocation = () =>
{
stopwatch.Start();
try
{
downloader.DownloadPackage(
packageId,
version,
v3NugetUri,
feedCredentials,
targetFilePath,
maxDownloadAttempts: 1,
downloadAttemptBackoff: TimeSpan.Zero
);
}
finally
{
stopwatch.Stop();
}
};
invocation.Should()
.ThrowExactly <Exception>();
stopwatch.Elapsed
.Should()
.BeCloseTo(estimatedTimeout, TimeSpan.FromSeconds(0.5));
}
}
public void AttemptsOnlyOnceIfSuccessful()
{
var packageId = "FakePackageId";
var version = VersionFactory.CreateSemanticVersion(1, 2, 3);
var feedUri = new Uri("http://www.myget.org");
var feedCredentials = new CredentialCache();
var targetFilePath = "FakeTargetFilePath";
var filesystem = Substitute.For <ICalamariFileSystem>();
var calledCount = 0;
var downloader = new InternalNuGetPackageDownloader(filesystem);
downloader.DownloadPackage(packageId, version, feedUri, feedCredentials, targetFilePath, maxDownloadAttempts: 5, downloadAttemptBackoff: TimeSpan.Zero, action: (arg1, arg2, arg3, arg4, arg5) =>
{
calledCount++;
});
Assert.That(calledCount, Is.EqualTo(1));
}