private void RunScript(Stream scriptSource)
{
var script = _scriptDeserializer.GetDeserializedScript(scriptSource);
var scriptContext = new ScriptContext(script);
foreach (var update in script.Update)
{
var updateContext = new UpdateContext(update, scriptContext);
foreach (var step in update.UpdateStep)
{
var stepContext = new UpdateStepContext(step, updateContext);
var preconditions = ResolvePreconditions(stepContext, step, script);
var context = new UpdateStepContextWithPreconditions(stepContext, preconditions);
if (!_preconditionService.IsMet(context))
{
_logger.LogInformation($"{context} precondition resulted in skipping the step");
continue;
}
_updateStepService.Execute(context);
}
}
}
private IEnumerable <PreconditionType> ResolvePreconditions(UpdateStepContext stepContext, UpdateStepBaseType step,
Updates script)
{
var preconditions = step.Preconditions;
if (preconditions == null || preconditions.Length == 0)
{
_logger.LogInformation("{0} doesn't have precondition - using script defaults", stepContext);
preconditions = script.DefaultPreconditions;
}
if (preconditions == null)
{
throw new InvalidOperationException($"Update script for {stepContext} doesn't have default preconditions specified");
}
return(preconditions);
}