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<?php
/**
* Copyright (c) 2017 Constantin Galbenu <[email protected]>
*/
namespace Gica\Cqrs\Saga\State;
class InMemoryStateManager implements ProcessStateLoader, ProcessStateUpdater
{
private $states = [];
public function loadState(string $stateClass, $stateId)
$key = $stateClass . $stateId;
if (isset($this->states[$key])) {
return $this->states[$key];
}
return new $stateClass;
public function updateState($stateId, callable $updater)
$stateClass = $this->getStateClass($updater);
$state = call_user_func($updater, $this->loadState($stateClass, $stateId));
$this->states[$key] = $state;
private function getStateClass(callable $update): string
$reflection = new \ReflectionFunction($update);
if ($reflection->getNumberOfParameters() <= 0) {
throw new \Exception("Updater callback must have one type-hinted parameter");
return $reflection->getParameters()[0]->getClass()->name;
xprt64 /
cqrs-es
