/// <inheritdoc/>
public Selections Solve(Requirements requirements)
{
#region Sanity checks
if (requirements == null)
{
throw new ArgumentNullException(nameof(requirements));
}
if (requirements.InterfaceUri == null)
{
throw new ArgumentException(Resources.MissingInterfaceUri, nameof(requirements));
}
#endregion
Selections?selections = null;
_handler.RunTask(new SimpleTask(Resources.ExternalSolverRunning, () =>
{
using var control = new ExternalSolverSession(GetStartInfo())
{
{ "confirm", args => DoConfirm((string)args[0]) },
{ "confirm-keys", args => DoConfirmKeys(new FeedUri((string)args[0]), args[1].ReparseAsJson <Dictionary <string, string[][]> >()) },
{ "update-key-info", args => null }
};
control.Invoke(args =>
{
if ((string)args[0] == "ok")
{
_feedManager.Stale = args[1].ReparseAsJson(new { stale = false }).stale;
selections = XmlStorage.FromXmlString <Selections>((string)args[2]);
}
else
{
throw new SolverException(((string)args[1]).Replace("\n", Environment.NewLine));
}
}, "select", GetEffectiveRequirements(requirements), false /*_feedManager.Refresh*/); // Pretend refresh is always false to avoid downloading feeds in external process (could cause problems with HTTPS and GPG validation)
while (selections == null)
{
control.HandleStderr();
control.HandleNextChunk();
}
control.HandleStderr();
}));
Debug.Assert(selections != null);
// Invalidate in-memory feed cache, because external solver may have modified on-disk feed cache
_feedManager.Clear();
return(selections);
}
