private function findSuitableNode(CommandMessageInterface $command)
{
$nodes = $this->template->getSubscriptions($command->getCommandName());
if (empty($nodes)) {
throw new NoHandlerForCommandException(sprintf("No handler in cluster was subscribed for command [%s]", $command->getCommandName()));
}
return $nodes[0];
// TODO temporary something more elaborate :)
}
/**
* @param CommandMessageInterface $command
* @param CommandHandlerInterface $handler
* @return mixed
* @throws \Exception
*/
protected function doDispatch(CommandMessageInterface $command, CommandHandlerInterface $handler)
{
$this->logger->debug("Dispatching command [{name}]", array('name' => $command->getCommandName()));
$unitOfWork = $this->unitOfWorkFactory->createUnitOfWork();
$unitOfWork->setLogger($this->logger);
$chain = new DefaultInterceptorChain($command, $unitOfWork, $handler, $this->handlerInterceptors);
try {
$return = $chain->proceed();
} catch (\Exception $ex) {
$unitOfWork->rollback($ex);
throw $ex;
}
$unitOfWork->commit();
return $return;
}
/**
* Finds and returns the suitable CommandHandlerInterface for the command message
* or throws a NoHandlerForCommandException if none exist.
*
* @param CommandMessageInterface $message
* @return CommandHandlerInterface
* @throws NoHandlerForCommandException
*/
public function findCommandHandlerFor(CommandMessageInterface $message)
{
if (!isset($this->subscriptions[$message->getCommandName()])) {
throw new NoHandlerForCommandException(sprintf("No handler was subscribed for command [%s]", $message->getCommandName()));
}
return $this->subscriptions[$message->getCommandName()];
}