/// <summary>
/// Restores all libraries in the <see cref="Libraries"/> collection.
/// </summary>
/// <param name="cancellationToken">A token that allows for cancellation of the operation.</param>
public async Task <IEnumerable <ILibraryInstallationResult> > RestoreAsync(CancellationToken cancellationToken)
{
//TODO: This should have an "undo scope"
var results = new List <ILibraryInstallationResult>();
var tasks = new List <Task <ILibraryInstallationResult> >();
foreach (ILibraryInstallationState state in Libraries)
{
if (cancellationToken.IsCancellationRequested)
{
results.Add(LibraryInstallationResult.FromCancelled(state));
_hostInteraction.Logger.Log(Resources.Text.RestoreCancelled, LogLevel.Task);
return(results);
}
_hostInteraction.Logger.Log(string.Format(Resources.Text.RestoringLibrary, state.LibraryId), LogLevel.Operation);
IProvider provider = _dependencies.GetProvider(state.ProviderId);
if (provider != null)
{
tasks.Add(provider.InstallAsync(state, cancellationToken));
}
else
{
results.Add(new LibraryInstallationResult(state, PredefinedErrors.ProviderUnknown(state.ProviderId)));
}
}
await Task.WhenAll(tasks).ConfigureAwait(false);
results.AddRange(tasks.Select(t => t.Result));
return(results);
}
/// <summary>
/// Creates an instance of the <see cref="Manifest"/> class based on
/// the provided JSON string.
/// </summary>
/// <param name="json">A string of JSON in the correct format.</param>
/// <param name="dependencies">The host provided dependencies.</param>
/// <returns></returns>
public static Manifest FromJson(string json, IDependencies dependencies)
{
try
{
Manifest manifest = JsonConvert.DeserializeObject <Manifest>(json);
manifest._dependencies = dependencies;
manifest._hostInteraction = dependencies.GetHostInteractions();
foreach (LibraryInstallationState state in manifest.Libraries.Cast <LibraryInstallationState>())
{
state.ProviderId = state.ProviderId ?? manifest.DefaultProvider;
}
return(manifest);
}
catch (Exception)
{
dependencies.GetHostInteractions().Logger.Log(PredefinedErrors.ManifestMalformed().Message, LogLevel.Task);
return(null);
}
}