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<?php |
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namespace RemiSan\TransactionManager\Event; |
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use League\Event\EmitterInterface; |
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use League\Event\Event; |
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use League\Event\EventInterface; |
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use League\Event\GeneratorInterface; |
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use League\Event\ListenerProviderInterface; |
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use RemiSan\TransactionManager\Exception\TransactionException; |
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use RemiSan\TransactionManager\Transactional; |
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final class TransactionalEmitter implements EmitterInterface, Transactional |
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{ |
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/** @var EmitterInterface */ |
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private $emitter; |
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/** @var array */ |
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private $events = []; |
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/** @var bool */ |
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private $running; |
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/** |
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* Constructor. |
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* |
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* @param EmitterInterface $emitter |
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*/ |
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public function __construct(EmitterInterface $emitter) |
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{ |
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$this->emitter = $emitter; |
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$this->events = []; |
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$this->running = false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function emit($event) |
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{ |
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if (!$this->running) { |
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throw new TransactionException('Cannot emit outside a transaction'); |
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} |
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return $this->addEvent($event); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function emitBatch(array $events) |
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{ |
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$results = []; |
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foreach ($events as $event) { |
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$results[] = $this->emit($event); |
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} |
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return $results; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function emitGeneratedEvents(GeneratorInterface $generator) |
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{ |
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$events = $generator->releaseEvents(); |
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return $this->emitBatch($events); |
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} |
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/** |
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* @param $event |
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* |
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* @return EventInterface |
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*/ |
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private function addEvent($event) |
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{ |
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if (is_string($event)) { |
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$event = Event::named($event); |
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} |
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if (!$event instanceof EventInterface) { |
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throw new \InvalidArgumentException( |
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'Events should be provides as Event instances or string, received type: ' . gettype($event) |
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); |
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} |
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$this->events[] = $event; |
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return $event; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function beginTransaction() |
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{ |
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$this->running = true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function commit() |
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{ |
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foreach ($this->events as $event) { |
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$this->emitter->emit($event); |
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} |
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$this->events = []; |
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$this->running = false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function rollback() |
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{ |
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$this->events = []; |
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$this->running = false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function removeListener($event, $listener) |
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{ |
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$this->emitter->removeListener($event, $listener); |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function useListenerProvider(ListenerProviderInterface $provider) |
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{ |
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$this->emitter->useListenerProvider($provider); |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function removeAllListeners($event) |
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{ |
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$this->emitter->removeAllListeners($event); |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function hasListeners($event) |
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{ |
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return $this->emitter->hasListeners($event); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getListeners($event) |
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{ |
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return $this->emitter->getListeners($event); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addListener($event, $listener, $priority = self::P_NORMAL) |
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{ |
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$this->emitter->addListener($event, $listener, $priority); |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addOneTimeListener($event, $listener, $priority = self::P_NORMAL) |
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{ |
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$this->emitter->addOneTimeListener($event, $listener, $priority); |
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return $this; |
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} |
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} |
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remi-san /
transaction-manager
