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<?php |
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namespace DDDominio\EventSourcing\Versioning; |
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use DDDominio\EventSourcing\EventStore\StoredEvent; |
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class EventUpgrader implements EventUpgraderInterface |
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{ |
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/** |
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* @var array |
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*/ |
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private $upgrades; |
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/** |
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* @var EventAdapter |
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*/ |
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private $eventAdapter; |
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/** |
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* @param EventAdapter $eventAdapter |
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*/ |
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public function __construct(EventAdapter $eventAdapter) |
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{ |
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$this->eventAdapter = $eventAdapter; |
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} |
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/** |
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* @param UpgradeInterface $upgrade |
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*/ |
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public function registerUpgrade(UpgradeInterface $upgrade) |
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{ |
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$this->upgrades[$upgrade->eventClass()][] = $upgrade; |
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} |
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/** |
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* @param StoredEvent $storedEvent |
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* @param Version $version |
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*/ |
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public function migrate(StoredEvent $storedEvent, $version = null) |
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{ |
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if (is_null($version)) { |
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$this->upgrade($storedEvent); |
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} else { |
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if ($storedEvent->version()->greaterThan($version)) { |
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$this->downgrade($storedEvent, $version); |
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} else { |
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$this->upgrade($storedEvent, $version); |
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} |
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} |
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} |
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/** |
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* @param StoredEvent $storedEvent |
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* @param Version $version |
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*/ |
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View Code Duplication |
public function upgrade(StoredEvent $storedEvent, $version = null) |
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{ |
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if (isset($this->upgrades[$storedEvent->type()])) { |
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/** @var UpgradeInterface $upgrade */ |
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foreach ($this->upgrades[$storedEvent->type()] as $upgrade) { |
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if ($storedEvent->version()->equalTo($upgrade->from())) { |
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$upgrade->upgrade($storedEvent); |
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$storedEvent->setVersion($upgrade->to()); |
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if (!is_null($version) && $upgrade->to()->equalTo($version)) { |
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return; |
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} |
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} |
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} |
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} |
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} |
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/** |
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* @param StoredEvent $storedEvent |
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* @param Version $version |
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*/ |
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View Code Duplication |
public function downgrade(StoredEvent $storedEvent, $version = null) |
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{ |
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if (isset($this->upgrades[$storedEvent->type()])) { |
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$upgrades = array_reverse($this->upgrades[$storedEvent->type()]); |
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/** @var UpgradeInterface $upgrade */ |
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foreach ($upgrades as $upgrade) { |
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if ($storedEvent->version()->equalTo($upgrade->to())) { |
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$upgrade->downgrade($storedEvent); |
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$storedEvent->setVersion($upgrade->from()); |
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if (!is_null($version) && $upgrade->to()->equalTo($version)) { |
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return; |
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} |
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} |
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} |
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} |
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} |
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} |
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DDDominio /
event-sourcing
Loading history...
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.