public async Task <Step> Run(CallStack stack)
{
var variables = stack.CurrentVariables.Values;
// map input parameters in from variables
var childInputs = new ValueSet(InputMapping.ToDictionary(m => m.Key, m => variables[m.Value.Name]));
// actually run the process, with the inputs named as it expects
var response = await ChildProcess.Run(childInputs, stack);
string returnPath = response.ReturnPath;
var outputs = response.Outputs;
// map any output parameters back out into variables
if (outputs != null)
{
foreach (var kvp in OutputMapping)
{
variables[kvp.Value.Name] = outputs.Values[kvp.Key];
}
}
if (returnPath == null)
{
if (!ReturnPaths.Any())
{
return(DefaultReturnPath);
}
if (ChildProcess is SystemProcess)
{
throw new CursiveRunException(stack, $"System process \"{ChildProcess.Name}\" unexpectedly returned a null value");
}
else
{
throw new CursiveRunException(stack, $"Step {ID} unexpectedly returned a null value");
}
}
if (!ReturnPaths.TryGetValue(returnPath, out Step nextStep))
{
if (ChildProcess is SystemProcess)
{
throw new CursiveRunException(stack, $"System process \"{ChildProcess.Name}\" returned an unexpected value: {returnPath}");
}
else
{
throw new CursiveRunException(stack, $"Step {ID} returned an unexpected value: {returnPath}");
}
}
return(nextStep);
}
