private IEnumerable <PackageIdentity> CreatePackageIdentityFromNupkgPath()
{
PackageIdentity identity = null;
IPackage package = null;
try
{
// Example: install-package2 https://az320820.vo.msecnd.net/packages/microsoft.aspnet.mvc.4.0.20505.nupkg
if (_isHttp)
{
PackageIdentity packageIdentity = ParsePackageIdentityFromHttpSource(Id);
IPackageCacheRepository packageCache = this.Projects.FirstOrDefault().TryGetFeature <IPackageCacheRepository>();
IPackageName packageName = CoreConverters.SafeToPackageName(packageIdentity);
SemanticVersion packageSemVer = CoreConverters.SafeToSemanticVersion(packageIdentity.Version);
Uri downloadUri = new Uri(Id);
PackageDownloader downloader = new PackageDownloader();
// Try to download the package through the cache.
bool success = packageCache.InvokeOnPackage(
packageIdentity.Id,
packageSemVer,
(targetStream) =>
downloader.DownloadPackage(
new HttpClient(downloadUri),
packageName,
targetStream));
if (success)
{
// Try to get it from the cache again
package = packageCache.FindPackage(packageIdentity.Id, packageSemVer);
}
}
else
{
// Example: install-package2 c:\temp\packages\jQuery.1.10.2.nupkg
string fullPath = Path.GetFullPath(Id);
package = new OptimizedZipPackage(fullPath);
}
if (package != null)
{
Id = package.Id;
Version = package.Version.ToString();
identity = new PackageIdentity(Id, NuGetVersion.Parse(Version));
}
}
catch (Exception ex)
{
Log(MessageLevel.Error, Resources.Cmdlet_FailToParsePackages, Id, ex.Message);
}
return(new List <PackageIdentity>()
{
identity
});
}
internal static IPackage GetPackage(IPackageCacheRepository packageCache, PackageIdentity packageIdentity, Uri downloadUri)
{
var packageSemVer = CoreConverters.SafeToSemanticVersion(packageIdentity.Version);
var packageName = CoreConverters.SafeToPackageName(packageIdentity);
var downloader = new PackageDownloader();
IPackage package = null;
if (packageCache != null)
{
package = packageCache.FindPackage(packageName.Id, packageSemVer);
if (package != null)
{
NuGetTraceSources.ActionExecutor.Info(
"download/cachehit",
"[{0}] Download: Cache Hit!",
packageIdentity);
// Success!
return(package);
}
if (downloadUri == null)
{
throw new InvalidOperationException(String.Format(
CultureInfo.CurrentCulture,
Strings.DownloadActionHandler_NoDownloadUrl,
packageIdentity));
}
// Try to download the package through the cache.
bool success = packageCache.InvokeOnPackage(
packageIdentity.Id,
packageSemVer,
(targetStream) =>
downloader.DownloadPackage(
new HttpClient(downloadUri),
packageName,
targetStream));
if (success)
{
NuGetTraceSources.ActionExecutor.Info(
"download/downloadedtocache",
"[{0}] Download: Downloaded to cache",
packageName);
// Try to get it from the cache again
package = packageCache.FindPackage(packageIdentity.Id, packageSemVer);
}
}
// Either:
// 1. We failed to load the package into the cache, which can happen when
// access to the %LocalAppData% directory is blocked,
// e.g. on Windows Azure Web Site build OR
// B. It was purged from the cache before it could be retrieved again.
// Regardless, the cache isn't working for us, so download it in to memory.
if (package == null)
{
NuGetTraceSources.ActionExecutor.Info(
"download/cachefailing",
"[{0}] Download: Cache isn't working. Downloading to RAM",
packageName);
using (var targetStream = new MemoryStream())
{
downloader.DownloadPackage(
new HttpClient(downloadUri),
packageName,
targetStream);
targetStream.Seek(0, SeekOrigin.Begin);
package = new ZipPackage(targetStream);
}
}
return(package);
}