public Package(IPackage package, DerivedPackageData derivedData)
{
Id = package.Id;
Version = package.Version.ToString();
Title = package.Title;
Authors = String.Join(",", package.Authors);
if (package.IconUrl != null)
{
IconUrl = package.IconUrl.GetComponents(UriComponents.HttpRequestUrl, UriFormat.Unescaped);
}
if (package.LicenseUrl != null)
{
LicenseUrl = package.LicenseUrl.GetComponents(UriComponents.HttpRequestUrl, UriFormat.Unescaped);
}
if (package.ProjectUrl != null)
{
ProjectUrl = package.ProjectUrl.GetComponents(UriComponents.HttpRequestUrl, UriFormat.Unescaped);
}
RequireLicenseAcceptance = package.RequireLicenseAcceptance;
Description = package.Description;
Summary = package.Summary;
ReleaseNotes = package.ReleaseNotes;
Tags = package.Tags;
Dependencies = String.Join("|", package.DependencySets.SelectMany(ConvertDependencySetToStrings));
PackageHash = derivedData.PackageHash;
PackageHashAlgorithm = "SHA512";
PackageSize = derivedData.PackageSize;
LastUpdated = derivedData.LastUpdated.UtcDateTime;
Published = derivedData.Created.UtcDateTime;
IsAbsoluteLatestVersion = package.IsAbsoluteLatestVersion;
IsLatestVersion = package.IsLatestVersion;
Path = derivedData.Path;
FullPath = derivedData.FullPath;
MinClientVersion = package.MinClientVersion == null ? null : package.MinClientVersion.ToString();
}
private void SetData(IPackage package, DerivedPackageData packageData)
{
_cacheLock.EnterWriteLock();
try
{
_derivedDataLookup[package] = packageData;
}
finally
{
_cacheLock.ExitWriteLock();
}
}
/// <summary>
/// Gives the Package containing both the IPackage and the derived metadata.
/// The returned Package will be null if <paramref name="package" /> no longer exists in the cache.
/// </summary>
public Package GetMetadataPackage(IPackage package)
{
Package metadata = null;
// The cache may have changed, and the metadata may no longer exist
DerivedPackageData data = null;
if (PackageCache.TryGetValue(package, out data))
{
metadata = new Package(package, data);
}
return(metadata);
}
/// <summary>
/// Gets the metadata package.
/// </summary>
/// <param name="package">The package.</param>
/// <returns></returns>
public Package GetMetadataPackage(IPackage package)
{
var derived = new DerivedPackageData() {
//Created = ?
//FullPath = ?
IsAbsoluteLatestVersion = package.IsAbsoluteLatestVersion,
IsLatestVersion = package.IsLatestVersion
//LastUpdated = ?
//PackageHash = package.GetHash(),
//PackageSize = ??
//Path = ??
//SupportedFrameworks = package.GetSupportedFrameworks(),
};
//var pkg = new Package(package, new DerivedPackageData());
return new Package(package, derived);
}
private void SetData(IPackage package, DerivedPackageData packageData)
{
_cacheLock.EnterWriteLock();
try
{
_derivedDataLookup[package] = packageData;
}
finally
{
_cacheLock.ExitWriteLock();
}
}
protected override IPackage OpenPackage(string path)
{
IPackage package = base.OpenPackage(path);
if (EnableDelisting)
{
// hidden packages are considered delisted
var localPackage = package as LocalPackage;
if (localPackage != null)
{
localPackage.Listed = !File.GetAttributes(FileSystem.GetFullPath(path)).HasFlag(FileAttributes.Hidden);
}
}
_cacheLock.EnterWriteLock();
try
{
DateTime start = DateTime.Now;
while (true)
{
DerivedPackageData packageData;
if (!_derivedDataLookup.TryGetValue(package, out packageData))
{
// take ownership
_derivedDataLookup[package] = null;
break;
}
if (packageData != null)
{
// derived data has been computed and cached
return(package);
}
if ((DateTime.Now - start).TotalSeconds > MaxWaitMs)
{
// we're giving up on waiting; potentially other thread is blocked, died, ... take ownership
_derivedDataLookup[package] = null;
break;
}
// about to wait; release locks
_cacheLock.ExitWriteLock();
_derivedDataComputed.WaitOne(MaxWaitMs);
_cacheLock.EnterWriteLock();
}
}
finally
{
_cacheLock.ExitWriteLock();
}
try
{
// compute
DerivedPackageData packageData = CalculateDerivedData(package, path);
// write value
SetData(package, packageData);
}
catch
{
// on failure, clean cache
DeleteData(package);
throw;
}
finally
{
// We've either failed or succeeded => wake up waiting threads, if any.
_derivedDataComputed.Set();
}
return(package);
}
/// <summary>
/// CreateCache loads all packages and determines additional metadata such as the hash, IsAbsoluteLatestVersion, and IsLatestVersion.
/// </summary>
private IDictionary<IPackage, DerivedPackageData> CreateCache()
{
ConcurrentDictionary<IPackage, DerivedPackageData> packages = new ConcurrentDictionary<IPackage, DerivedPackageData>();
ParallelOptions opts = new ParallelOptions();
opts.MaxDegreeOfParallelism = 4;
ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>> absoluteLatest = new ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>>();
ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>> latest = new ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>>();
// get settings
bool checkFrameworks = EnableFrameworkFiltering;
bool enableDelisting = EnableDelisting;
// we need to save the current context because it's stored in TLS and we're computing hashes on different threads.
var context = HttpContext.Current;
// load and cache all packages.
// Note that we can't pass GetPackageFiles() to Parallel.ForEach() because
// the file could be added/deleted from _fileSystem, and if this happens,
// we'll get error "Collection was modified; enumeration operation may not execute."
// So we have to materialize the IEnumerable into a list first.
var packageFiles = GetPackageFiles().ToList();
Parallel.ForEach(packageFiles, opts, path =>
{
OptimizedZipPackage zip = OpenPackage(path);
Debug.Assert(zip != null, "Unable to open " + path);
if (zip == null)
{
return;
}
if (enableDelisting)
{
// hidden packages are considered delisted
zip.Listed = !File.GetAttributes(_fileSystem.GetFullPath(path)).HasFlag(FileAttributes.Hidden);
}
string packageHash = null;
long packageSize = 0;
string persistedHashFile = EnablePersistNupkgHash ? GetHashFile(path, false) : null;
bool hashComputeNeeded = true;
ReadHashFile(context, path, persistedHashFile, ref packageSize, ref packageHash, ref hashComputeNeeded);
if (hashComputeNeeded)
{
using (var stream = _fileSystem.OpenFile(path))
{
packageSize = stream.Length;
packageHash = Convert.ToBase64String(HashProvider.CalculateHash(stream));
}
WriteHashFile(context, path, persistedHashFile, packageSize, packageHash);
}
var data = new DerivedPackageData
{
PackageSize = packageSize,
PackageHash = packageHash,
LastUpdated = _fileSystem.GetLastModified(path),
Created = _fileSystem.GetCreated(path),
Path = path,
FullPath = _fileSystem.GetFullPath(path),
// default to false, these will be set later
IsAbsoluteLatestVersion = false,
IsLatestVersion = false
};
if (checkFrameworks)
{
data.SupportedFrameworks = zip.GetSupportedFrameworks();
}
var entry = new Tuple<IPackage, DerivedPackageData>(zip, data);
// find the latest versions
string id = zip.Id.ToLowerInvariant();
// update with the highest version
absoluteLatest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
// update latest for release versions
if (zip.IsReleaseVersion())
{
latest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
}
// add the package to the cache, it should not exist already
Debug.Assert(packages.ContainsKey(zip) == false, "duplicate package added");
packages.AddOrUpdate(zip, entry.Item2, (oldPkg, oldData) => oldData);
});
// Set additional attributes after visiting all packages
foreach (var entry in absoluteLatest.Values)
{
entry.Item2.IsAbsoluteLatestVersion = true;
}
foreach (var entry in latest.Values)
{
entry.Item2.IsLatestVersion = true;
}
return packages;
}
private void AddPackageToCache(ConcurrentDictionary<IPackage, DerivedPackageData> packages, ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>> absoluteLatest, ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>> latest, bool checkFrameworks, HttpContext context, string path, IPackage zip)
{
string packageHash = null;
long packageSize = 0;
string persistedHashFile = EnablePersistNupkgHash ? GetHashFile(path, false) : null;
bool hashComputeNeeded = true;
ReadHashFile(context, path, persistedHashFile, ref packageSize, ref packageHash, ref hashComputeNeeded);
if (hashComputeNeeded)
{
using (var stream = _fileSystem.OpenFile(path))
{
packageSize = stream.Length;
packageHash = Convert.ToBase64String(HashProvider.CalculateHash(stream));
}
WriteHashFile(context, path, persistedHashFile, packageSize, packageHash);
}
var data = new DerivedPackageData
{
PackageSize = packageSize,
PackageHash = packageHash,
LastUpdated = _fileSystem.GetLastModified(path),
Created = _fileSystem.GetCreated(path),
Path = path,
FullPath = _fileSystem.GetFullPath(path),
// default to false, these will be set later
IsAbsoluteLatestVersion = false,
IsLatestVersion = false
};
if (checkFrameworks)
{
data.SupportedFrameworks = zip.GetSupportedFrameworks();
}
var entry = new Tuple<IPackage, DerivedPackageData>(zip, data);
// find the latest versions
string id = zip.Id.ToLowerInvariant();
// update with the highest version
absoluteLatest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
// update latest for release versions
if (zip.IsReleaseVersion())
{
latest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
}
// add the package to the cache, it should not exist already
Debug.Assert(packages.ContainsKey(zip) == false, "duplicate package added");
packages.AddOrUpdate(zip, entry.Item2, (oldPkg, oldData) => oldData);
}
/// <summary>
/// CreateCache loads all packages and determines additional metadata such as the hash, IsAbsoluteLatestVersion, and IsLatestVersion.
/// </summary>
private IDictionary<IPackage, DerivedPackageData> CreateCache()
{
ConcurrentDictionary<IPackage, DerivedPackageData> packages = new ConcurrentDictionary<IPackage, DerivedPackageData>();
ParallelOptions opts = new ParallelOptions();
opts.MaxDegreeOfParallelism = 4;
ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>> absoluteLatest = new ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>>();
ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>> latest = new ConcurrentDictionary<string, Tuple<IPackage, DerivedPackageData>>();
// get settings
bool checkFrameworks = EnableFrameworkFiltering;
bool enableDelisting = EnableDelisting;
// load and cache all packages
Parallel.ForEach(GetPackageFiles(), opts, path =>
{
OptimizedZipPackage zip = OpenPackage(path);
Debug.Assert(zip != null, "Unable to open " + path);
if (zip != null)
{
if (enableDelisting)
{
// hidden packages are considered delisted
zip.Listed = !File.GetAttributes(_fileSystem.GetFullPath(path)).HasFlag(FileAttributes.Hidden);
}
byte[] hashBytes;
long fileLength;
using (Stream stream = _fileSystem.OpenFile(path))
{
fileLength = stream.Length;
hashBytes = HashProvider.CalculateHash(stream);
}
var data = new DerivedPackageData
{
PackageSize = fileLength,
PackageHash = Convert.ToBase64String(hashBytes),
LastUpdated = _fileSystem.GetLastModified(path),
Created = _fileSystem.GetCreated(path),
Path = path,
FullPath = _fileSystem.GetFullPath(path),
// default to false, these will be set later
IsAbsoluteLatestVersion = false,
IsLatestVersion = false
};
if (checkFrameworks)
{
data.SupportedFrameworks = zip.GetSupportedFrameworks();
}
Tuple<IPackage, DerivedPackageData> entry = new Tuple<IPackage, DerivedPackageData>(zip, data);
// find the latest versions
string id = zip.Id.ToLowerInvariant();
// update with the highest version
absoluteLatest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
// update latest for release versions
if (zip.IsReleaseVersion())
{
latest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
}
// add the package to the cache, it should not exist already
Debug.Assert(packages.ContainsKey(zip) == false, "duplicate package added");
packages.AddOrUpdate(zip, entry.Item2, (oldPkg, oldData) => oldData);
}
});
// Set additional attributes after visiting all packages
foreach (var entry in absoluteLatest.Values)
{
entry.Item2.IsAbsoluteLatestVersion = true;
}
foreach (var entry in latest.Values)
{
entry.Item2.IsLatestVersion = true;
}
return packages;
}
/// <summary>
/// CreateCache loads all packages and determines additional metadata such as the hash, IsAbsoluteLatestVersion, and IsLatestVersion.
/// </summary>
private IDictionary <IPackage, DerivedPackageData> CreateCache()
{
ConcurrentDictionary <IPackage, DerivedPackageData> packages = new ConcurrentDictionary <IPackage, DerivedPackageData>();
ParallelOptions opts = new ParallelOptions();
opts.MaxDegreeOfParallelism = 4;
ConcurrentDictionary <string, Tuple <IPackage, DerivedPackageData> > absoluteLatest = new ConcurrentDictionary <string, Tuple <IPackage, DerivedPackageData> >();
ConcurrentDictionary <string, Tuple <IPackage, DerivedPackageData> > latest = new ConcurrentDictionary <string, Tuple <IPackage, DerivedPackageData> >();
// get settings
bool checkFrameworks = EnableFrameworkFiltering;
bool enableDelisting = EnableDelisting;
// load and cache all packages
Parallel.ForEach(GetPackageFiles(), opts, path =>
{
OptimizedZipPackage zip = OpenPackage(path);
Debug.Assert(zip != null, "Unable to open " + path);
if (zip != null)
{
if (enableDelisting)
{
// hidden packages are considered delisted
zip.Listed = !File.GetAttributes(_fileSystem.GetFullPath(path)).HasFlag(FileAttributes.Hidden);
}
byte[] hashBytes;
long fileLength;
using (Stream stream = _fileSystem.OpenFile(path))
{
fileLength = stream.Length;
hashBytes = HashProvider.CalculateHash(stream);
}
var data = new DerivedPackageData
{
PackageSize = fileLength,
PackageHash = Convert.ToBase64String(hashBytes),
LastUpdated = _fileSystem.GetLastModified(path),
Created = _fileSystem.GetCreated(path),
Path = path,
FullPath = _fileSystem.GetFullPath(path),
// default to false, these will be set later
IsAbsoluteLatestVersion = false,
IsLatestVersion = false
};
if (checkFrameworks)
{
data.SupportedFrameworks = zip.GetSupportedFrameworks();
}
Tuple <IPackage, DerivedPackageData> entry = new Tuple <IPackage, DerivedPackageData>(zip, data);
// find the latest versions
string id = zip.Id.ToLowerInvariant();
// update with the highest version
absoluteLatest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
// update latest for release versions
if (zip.IsReleaseVersion())
{
latest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
}
// add the package to the cache, it should not exist already
Debug.Assert(packages.ContainsKey(zip) == false, "duplicate package added");
packages.AddOrUpdate(zip, entry.Item2, (oldPkg, oldData) => oldData);
}
});
// Set additional attributes after visiting all packages
foreach (var entry in absoluteLatest.Values)
{
entry.Item2.IsAbsoluteLatestVersion = true;
}
foreach (var entry in latest.Values)
{
entry.Item2.IsLatestVersion = true;
}
return(packages);
}
/// <summary>
/// CreateCache loads all packages and determines additional metadata such as the hash, IsAbsoluteLatestVersion, and IsLatestVersion.
/// </summary>
private IDictionary <IPackage, DerivedPackageData> CreateCache()
{
ConcurrentDictionary <IPackage, DerivedPackageData> packages = new ConcurrentDictionary <IPackage, DerivedPackageData>();
ParallelOptions opts = new ParallelOptions();
opts.MaxDegreeOfParallelism = 4;
ConcurrentDictionary <string, Tuple <IPackage, DerivedPackageData> > absoluteLatest = new ConcurrentDictionary <string, Tuple <IPackage, DerivedPackageData> >();
ConcurrentDictionary <string, Tuple <IPackage, DerivedPackageData> > latest = new ConcurrentDictionary <string, Tuple <IPackage, DerivedPackageData> >();
// get settings
bool checkFrameworks = EnableFrameworkFiltering;
bool enableDelisting = EnableDelisting;
// we need to save the current context because it's stored in TLS and we're computing hashes on different threads.
var context = HttpContext.Current;
// load and cache all packages.
// Note that we can't pass GetPackageFiles() to Parallel.ForEach() because
// the file could be added/deleted from _fileSystem, and if this happens,
// we'll get error "Collection was modified; enumeration operation may not execute."
// So we have to materialize the IEnumerable into a list first.
var packageFiles = GetPackageFiles().ToList();
Parallel.ForEach(packageFiles, opts, path =>
{
OptimizedZipPackage zip = OpenPackage(path);
Debug.Assert(zip != null, "Unable to open " + path);
if (zip == null)
{
return;
}
if (enableDelisting)
{
// hidden packages are considered delisted
zip.Listed = !File.GetAttributes(_fileSystem.GetFullPath(path)).HasFlag(FileAttributes.Hidden);
}
string packageHash = null;
long packageSize = 0;
string persistedHashFile = EnablePersistNupkgHash ? GetHashFile(path, false) : null;
bool hashComputeNeeded = true;
ReadHashFile(context, path, persistedHashFile, ref packageSize, ref packageHash, ref hashComputeNeeded);
if (hashComputeNeeded)
{
using (var stream = _fileSystem.OpenFile(path))
{
packageSize = stream.Length;
packageHash = Convert.ToBase64String(HashProvider.CalculateHash(stream));
}
WriteHashFile(context, path, persistedHashFile, packageSize, packageHash);
}
var data = new DerivedPackageData
{
PackageSize = packageSize,
PackageHash = packageHash,
LastUpdated = _fileSystem.GetLastModified(path),
Created = _fileSystem.GetCreated(path),
Path = path,
FullPath = _fileSystem.GetFullPath(path),
// default to false, these will be set later
IsAbsoluteLatestVersion = false,
IsLatestVersion = false
};
if (checkFrameworks)
{
data.SupportedFrameworks = zip.GetSupportedFrameworks();
}
var entry = new Tuple <IPackage, DerivedPackageData>(zip, data);
// find the latest versions
string id = zip.Id.ToLowerInvariant();
// update with the highest version
absoluteLatest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
// update latest for release versions
if (zip.IsReleaseVersion())
{
latest.AddOrUpdate(id, entry, (oldId, oldEntry) => oldEntry.Item1.Version < entry.Item1.Version ? entry : oldEntry);
}
// add the package to the cache, it should not exist already
Debug.Assert(packages.ContainsKey(zip) == false, "duplicate package added");
packages.AddOrUpdate(zip, entry.Item2, (oldPkg, oldData) => oldData);
});
// Set additional attributes after visiting all packages
foreach (var entry in absoluteLatest.Values)
{
entry.Item2.IsAbsoluteLatestVersion = true;
}
foreach (var entry in latest.Values)
{
entry.Item2.IsLatestVersion = true;
}
return(packages);
}
