public function proceed(ProcessStateInterface $process_state, EventInterface $event = null)
{
$execution_context = $process_state->getExecutionContext();
if ($event) {
$execution_context->setParameter('incoming_event', $event);
$state = $this->state_machine->execute($process_state, $event->getType());
$execution_context->removeParameter('incoming_event', $event);
} else {
$state = $this->state_machine->execute($process_state);
}
$commands = new CommandList();
if ($execution_context->hasParameter('command')) {
$command = $execution_context->getParameter('command');
if (!$command instanceof CommandInterface) {
throw new RuntimeError(sprintf('Unexpected return type for execution-context var "command". Type of "%s" expected.', CommandInterface::CLASS));
}
$commands->push($command);
$execution_context->removeParameter('command');
}
if ($execution_context->hasParameter('commands')) {
$command_list = $execution_context->getParameter('commands');
if (!$command_list instanceof CommandList) {
throw new RuntimeError(sprintf('Unexpected return type for execution-context var "commands". Type of "%s" expected.', CommandList::CLASS));
}
$commands->append($command_list);
$execution_context->removeParameter('commands');
}
return $commands;
}
protected function getPayloadIdentifier(ProcessStateInterface $process_state)
{
$identifier_path = $this->options->get('identifier_payload_path', false);
$jmes_path_runtime = new AstRuntime();
$identifier = $jmes_path_runtime($identifier_path, $process_state->getPayload());
if (!$identifier) {
throw new RuntimeError('Unable to resolve required "identifier" from payload-path:' . $identifier_path . ' within ' . $process_state->getExecutionContext()->getStateMachineName());
}
return $identifier;
}
protected function getProjection(ProcessStateInterface $process_state)
{
return $process_state->getExecutionContext()->getParameter($this->options->get('projection_key'));
}
