internal void EnsurePackage(IPackageCacheRepository cacheRepository)
{
// OData caches instances of DataServicePackage while updating their property values. As a result,
// the ZipPackage that we downloaded may no longer be valid (as indicated by a newer hash).
// When using MachineCache, once we've verified that the hashes match (which happens the first time around),
// we'll simply verify the file exists between successive calls.
IPackageMetadata packageMetadata = this;
bool refreshPackage = _package == null ||
(_package is OptimizedZipPackage && !((OptimizedZipPackage)_package).IsValid) ||
!String.Equals(OldHash, PackageHash, StringComparison.OrdinalIgnoreCase) ||
(_usingMachineCache && !cacheRepository.Exists(Id, packageMetadata.Version));
if (refreshPackage &&
TryGetPackage(cacheRepository, packageMetadata, out _package) &&
_package.GetHash(HashProvider).Equals(PackageHash, StringComparison.OrdinalIgnoreCase))
{
OldHash = PackageHash;
// Reset the flag so that we no longer need to download the package since it exists and is valid.
refreshPackage = false;
// Make a note that the backing store for the ZipPackage is the machine cache.
_usingMachineCache = true;
}
if (refreshPackage)
{
// We either do not have a package available locally or they are invalid. Download the package from the server.
_usingMachineCache = cacheRepository.InvokeOnPackage(packageMetadata.Id, packageMetadata.Version,
(stream) => Downloader.DownloadPackage(DownloadUrl, this, stream)
);
if (_usingMachineCache)
{
_package = cacheRepository.FindPackage(packageMetadata.Id, packageMetadata.Version);
Debug.Assert(_package != null);
}
else
{
// this can happen when access to the %LocalAppData% directory is blocked, e.g. on Windows Azure Web Site build
using (var targetStream = new MemoryStream())
{
Downloader.DownloadPackage(DownloadUrl, this, targetStream);
targetStream.Seek(0, SeekOrigin.Begin);
_package = new ZipPackage(targetStream);
}
}
OldHash = PackageHash;
}
}
internal void EnsurePackage(IPackageCacheRepository cacheRepository)
{
// OData caches instances of DataServicePackage while updating their property values. As a result,
// the ZipPackage that we downloaded may no longer be valid (as indicated by a newer hash).
// When using MachineCache, once we've verified that the hashes match (which happens the first time around),
// we'll simply verify the file exists between successive calls.
IPackageMetadata packageMetadata = this;
bool refreshPackage = _package == null ||
(_package is OptimizedZipPackage && !((OptimizedZipPackage)_package).IsValid) ||
!String.Equals(OldHash, PackageHash, StringComparison.OrdinalIgnoreCase) ||
(_usingMachineCache && !cacheRepository.Exists(Id, packageMetadata.Version));
if (refreshPackage &&
TryGetPackage(cacheRepository, packageMetadata, out _package) &&
_package.GetHash(HashProvider).Equals(PackageHash, StringComparison.OrdinalIgnoreCase))
{
OldHash = PackageHash;
// Reset the flag so that we no longer need to download the package since it exists and is valid.
refreshPackage = false;
// Make a note that the backing store for the ZipPackage is the machine cache.
_usingMachineCache = true;
}
if (refreshPackage)
{
using (Stream targetStream = cacheRepository.CreatePackageStream(packageMetadata.Id, packageMetadata.Version))
{
// We either do not have a package available locally or they are invalid. Download the package from the server.
Downloader.DownloadPackage(DownloadUrl, this, targetStream);
}
_package = cacheRepository.FindPackage(packageMetadata.Id, packageMetadata.Version);
// Make a note that we are using an in-memory instance of the package.
_usingMachineCache = false;
OldHash = PackageHash;
}
}
internal void EnsurePackage(IPackageCacheRepository cacheRepository)
{
// OData caches instances of DataServicePackage while updating their property values. As a result,
// the ZipPackage that we downloaded may no longer be valid (as indicated by a newer hash).
// When using MachineCache, once we've verified that the hashes match (which happens the first time around),
// we'll simply verify the file exists between successive calls.
IPackageMetadata packageMetadata = this;
if (_package == null ||
(_package is OptimizedZipPackage && !((OptimizedZipPackage)_package).IsValid) ||
!String.Equals(OldHash, PackageHash, StringComparison.OrdinalIgnoreCase) ||
(_usingMachineCache && !cacheRepository.Exists(Id, packageMetadata.Version)))
{
IPackage newPackage = null;
bool inMemOnly = false;
bool isValid = false;
// If the package exists in the cache and has the correct hash then use it. Otherwise download it.
if (TryGetPackage(cacheRepository, packageMetadata, out newPackage) && MatchPackageHash(newPackage))
{
isValid = true;
}
else
{
// We either do not have a package available locally or they are invalid. Download the package from the server.
if (cacheRepository.InvokeOnPackage(packageMetadata.Id, packageMetadata.Version,
(stream) => Downloader.DownloadPackage(DownloadUrl, this, stream)))
{
newPackage = cacheRepository.FindPackage(packageMetadata.Id, packageMetadata.Version);
Debug.Assert(newPackage != null);
}
else
{
// this can happen when access to the %LocalAppData% directory is blocked, e.g. on Windows Azure Web Site build
using (var targetStream = new MemoryStream())
{
Downloader.DownloadPackage(DownloadUrl, this, targetStream);
targetStream.Seek(0, SeekOrigin.Begin);
newPackage = new ZipPackage(targetStream);
}
inMemOnly = true;
}
// Because of CDN caching, the hash returned in odata feed
// can be out of sync with the hash of the file itself.
// So for now, we cannot call MatchPackageHash(newPackage) to
// validate that the file downloaded has the right hash.
isValid = true;
}
// apply the changes if the package hash was valid
if (isValid)
{
_package = newPackage;
// Make a note that the backing store for the ZipPackage is the machine cache.
_usingMachineCache = !inMemOnly;
OldHash = PackageHash;
}
else
{
// ensure package must end with a valid package, since we cannot load one we must throw.
throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture,
NuGetResources.Error_InvalidPackage, Version, Id));
}
}
}
internal void EnsurePackage(IPackageCacheRepository cacheRepository)
{
// OData caches instances of DataServicePackage while updating their property values. As a result,
// the ZipPackage that we downloaded may no longer be valid (as indicated by a newer hash).
// When using MachineCache, once we've verified that the hashes match (which happens the first time around),
// we'll simply verify the file exists between successive calls.
IPackageMetadata packageMetadata = this;
if (_package == null ||
(_package is OptimizedZipPackage && !((OptimizedZipPackage)_package).IsValid) ||
!String.Equals(OldHash, PackageHash, StringComparison.OrdinalIgnoreCase) ||
(_usingMachineCache && !cacheRepository.Exists(Id, packageMetadata.Version)))
{
IPackage newPackage = null;
bool inMemOnly = false;
bool isValid = false;
// If the package exists in the cache and has the correct hash then use it. Otherwise download it.
if (TryGetPackage(cacheRepository, packageMetadata, out newPackage) && MatchPackageHash(newPackage))
{
isValid = true;
}
else
{
// We either do not have a package available locally or they are invalid. Download the package from the server.
if (cacheRepository.InvokeOnPackage(packageMetadata.Id, packageMetadata.Version,
(stream) => Downloader.DownloadPackage(DownloadUrl, this, stream)))
{
newPackage = cacheRepository.FindPackage(packageMetadata.Id, packageMetadata.Version);
Debug.Assert(newPackage != null);
}
else
{
// this can happen when access to the %LocalAppData% directory is blocked, e.g. on Windows Azure Web Site build
using (var targetStream = new MemoryStream())
{
Downloader.DownloadPackage(DownloadUrl, this, targetStream);
targetStream.Seek(0, SeekOrigin.Begin);
newPackage = new ZipPackage(targetStream);
}
inMemOnly = true;
}
// Because of CDN caching, the hash returned in odata feed
// can be out of sync with the hash of the file itself.
// So for now, we cannot call MatchPackageHash(newPackage) to
// validate that the file downloaded has the right hash.
isValid = true;
}
// apply the changes if the package hash was valid
if (isValid)
{
_package = newPackage;
// Make a note that the backing store for the ZipPackage is the machine cache.
_usingMachineCache = !inMemOnly;
OldHash = PackageHash;
}
else
{
// ensure package must end with a valid package, since we cannot load one we must throw.
throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture,
NuGetResources.Error_InvalidPackage, Version, Id));
}
}
}
internal void EnsurePackage(IPackageCacheRepository cacheRepository)
{
// OData caches instances of DataServicePackage while updating their property values. As a result,
// the ZipPackage that we downloaded may no longer be valid (as indicated by a newer hash).
// When using MachineCache, once we've verified that the hashes match (which happens the first time around),
// we'll simply verify the file exists between successive calls.
IPackageMetadata packageMetadata = this;
bool refreshPackage = _package == null ||
(_package is OptimizedZipPackage && !((OptimizedZipPackage)_package).IsValid) ||
!String.Equals(OldHash, PackageHash, StringComparison.OrdinalIgnoreCase) ||
(_usingMachineCache && !cacheRepository.Exists(Id, packageMetadata.Version));
if (refreshPackage &&
TryGetPackage(cacheRepository, packageMetadata, out _package) &&
_package.GetHash(HashProvider).Equals(PackageHash, StringComparison.OrdinalIgnoreCase))
{
OldHash = PackageHash;
// Reset the flag so that we no longer need to download the package since it exists and is valid.
refreshPackage = false;
// Make a note that the backing store for the ZipPackage is the machine cache.
_usingMachineCache = true;
}
if (refreshPackage)
{
// We either do not have a package available locally or they are invalid. Download the package from the server.
Stream targetStream = null;
try
{
targetStream = cacheRepository.CreatePackageStream(packageMetadata.Id, packageMetadata.Version);
// this can happen when access to the %LocalAppData% directory is blocked, e.g. on Windows Azure Web Site build
if (targetStream != null)
{
_usingMachineCache = true;
}
else
{
// if we can't store the package into machine cache, store it in memory
targetStream = new MemoryStream();
_usingMachineCache = false;
}
// download package into the stream
Downloader.DownloadPackage(DownloadUrl, this, targetStream);
}
finally
{
if (targetStream != null && _usingMachineCache)
{
targetStream.Dispose();
}
}
if (_usingMachineCache)
{
_package = cacheRepository.FindPackage(packageMetadata.Id, packageMetadata.Version);
Debug.Assert(_package != null);
}
else
{
targetStream.Seek(0, SeekOrigin.Begin);
_package = new ZipPackage(targetStream);
targetStream.Dispose();
}
OldHash = PackageHash;
}
}
internal void EnsurePackage(IPackageCacheRepository cacheRepository)
{
// OData caches instances of DataServicePackage while updating their property values. As a result,
// the ZipPackage that we downloaded may no longer be valid (as indicated by a newer hash).
// When using MachineCache, once we've verified that the hashes match (which happens the first time around),
// we'll simply verify the file exists between successive calls.
IPackageMetadata packageMetadata = this;
bool refreshPackage = _package == null ||
(_package is OptimizedZipPackage && !((OptimizedZipPackage)_package).IsValid) ||
!String.Equals(OldHash, PackageHash, StringComparison.OrdinalIgnoreCase) ||
(_usingMachineCache && !cacheRepository.Exists(Id, packageMetadata.Version));
if (refreshPackage &&
TryGetPackage(cacheRepository, packageMetadata, out _package) &&
_package.GetHash(HashProvider).Equals(PackageHash, StringComparison.OrdinalIgnoreCase))
{
OldHash = PackageHash;
// Reset the flag so that we no longer need to download the package since it exists and is valid.
refreshPackage = false;
// Make a note that the backing store for the ZipPackage is the machine cache.
_usingMachineCache = true;
}
if (refreshPackage)
{
using (Stream targetStream = cacheRepository.CreatePackageStream(packageMetadata.Id, packageMetadata.Version))
{
// We either do not have a package available locally or they are invalid. Download the package from the server.
Downloader.DownloadPackage(DownloadUrl, this, targetStream);
}
_package = cacheRepository.FindPackage(packageMetadata.Id, packageMetadata.Version);
// Make a note that we are using an in-memory instance of the package.
_usingMachineCache = false;
OldHash = PackageHash;
}
}
internal void EnsurePackage(IPackageCacheRepository cacheRepository)
{
IPackageMetadata packageMetadata = this;
if ((((this._package == null) || ((this._package is OptimizedZipPackage) && !((OptimizedZipPackage)this._package).IsValid)) || !string.Equals(this.OldHash, this.PackageHash, StringComparison.OrdinalIgnoreCase)) || (this._usingMachineCache && !cacheRepository.Exists(this.Id, packageMetadata.Version)))
{
IPackage package = null;
bool flag = false;
bool flag2 = false;
if (TryGetPackage(cacheRepository, packageMetadata, out package) && this.MatchPackageHash(package))
{
flag2 = true;
}
else
{
if (cacheRepository.InvokeOnPackage(packageMetadata.Id, packageMetadata.Version, stream => this.Downloader.DownloadPackage(this.DownloadUrl, this, stream)))
{
package = cacheRepository.FindPackage(packageMetadata.Id, packageMetadata.Version);
}
else
{
using (MemoryStream stream = new MemoryStream())
{
this.Downloader.DownloadPackage(this.DownloadUrl, this, stream);
stream.Seek(0L, SeekOrigin.Begin);
package = new ZipPackage(stream);
}
flag = true;
}
flag2 = true;
}
if (!flag2)
{
object[] args = new object[] { this.Version, this.Id };
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, NuGetResources.Error_InvalidPackage, args));
}
this._package = package;
this.Id = this._package.Id;
this.Version = this._package.Version.ToString();
this._usingMachineCache = !flag;
this.OldHash = this.PackageHash;
}
}
