private IPackageConfiguration ExtractAndReadConfiguration(FileStorage.IFileStore fileStore,
Configuration.IConfigurationSerializer <StringBuilder> serializer,
string filename)
{
if (!fileStore.Contains(filename))
{
return(null);
}
var extractedFilename = fileStore.Get(filename).Extract(System.IO.Path.GetTempPath(), true);
if (!System.IO.File.Exists(extractedFilename))
{
return(null);
}
try
{
var config = serializer.Deserialize(new StringBuilder(System.IO.File.ReadAllText(extractedFilename)));
return((IPackageConfiguration)Core.Configuration.ConfigurationHelper.InstantiateTypeFromConfigurationGroup(typeof(PackageConfiguration), config));
}
catch
{
// swallow any exception; return null
return(null);
}
finally
{
FileStorage.FileStorageHelper.DeleteFile(extractedFilename);
}
}
/// <summary>
/// Instantiates a new <see cref="PackageProvider"/> .
/// </summary>
/// <param name="packagesFileStore">The file store containing the package files.</param>
/// <param name="configurationFilename">The filename of the configuration file in the packages.</param>
/// <param name="configurationSerializer">The configuration serializer to use to serialize and deserialize configuration files.</param>
/// <param name="packageFileStoreProvider">A file store provider which facilitates creating and connecting to packages.</param>
public PackageProvider(FileStorage.IFileStore packagesFileStore,
string configurationFilename,
Configuration.IConfigurationSerializer <StringBuilder> configurationSerializer,
IPackageFileStoreProvider packageFileStoreProvider)
: this()
{
_AllPackagesFileStore = packagesFileStore ?? throw new ArgumentNullException(nameof(packagesFileStore));
if (string.IsNullOrWhiteSpace(configurationFilename))
{
throw new ArgumentNullException(nameof(configurationFilename));
}
_ConfigurationFilename = configurationFilename;
_ConfigurationSerializer = configurationSerializer ?? throw new ArgumentNullException(nameof(configurationSerializer));
PackageFileStoreProvider = packageFileStoreProvider ?? throw new ArgumentNullException(nameof(packageFileStoreProvider));
}