/**
* @param StepRegistration $currentStep
*
* @throws PipelineBuildingException
*/
private function addBeforesToDirectedGraph(StepRegistration $currentStep)
{
foreach ($currentStep->getBefores() as $before) {
if (!isset($this->idToStep[$before->getDependsOnId()]) && $before->isEnforced()) {
$allStepIds = implode(',', array_keys($this->idToStep));
throw new PipelineBuildingException("Registration '{$before->getDependsOnId()}' specified in the insertbefore of the '{$currentStep->getStepId()}' step does not exist. Current step ids: {$allStepIds}.");
}
if (isset($this->idToStep[$before->getDependsOnId()])) {
$this->idDirectedGraph[$before->getDependantId()][] = $before->getDependsOnId();
}
}
}
