/**
* Handle POST requests
*
* @param EventInterface $event The current event
*/
public function post(EventInterface $event)
{
$request = $event->getRequest();
$event->getManager()->trigger('db.metadata.update', ['metadata' => json_decode($request->getContent(), true)]);
$model = new Model\Metadata();
$model->setData($event->getDatabase()->getMetadata($request->getUser(), $request->getImageIdentifier()));
$event->getResponse()->setModel($model);
}
/**
* Get data from the cache
*
* @param EventInterface $event The event instance
*/
public function loadFromCache(EventInterface $event)
{
$request = $event->getRequest();
$response = $event->getResponse();
$cacheKey = $this->getCacheKey($request->getPublicKey(), $request->getImageIdentifier());
$result = $this->cache->get($cacheKey);
if (is_array($result) && isset($result['lastModified']) && $result['lastModified'] instanceof DateTime && isset($result['metadata'])) {
$model = new Model\Metadata();
$model->setData($result['metadata']);
$response->setModel($model)->setLastModified($result['lastModified']);
$response->headers->set('X-Imbo-MetadataCache', 'Hit');
// Stop propagation of listeners for this event
$event->stopPropagation();
return;
} else {
if ($result) {
// Invalid result stored in the cache. Delete
$this->cache->delete($cacheKey);
}
}
$response->headers->set('X-Imbo-MetadataCache', 'Miss');
}
/**
* Load metadata
*
* @param EventInterface $event An event instance
*/
public function loadMetadata(EventInterface $event)
{
$request = $event->getRequest();
$response = $event->getResponse();
$publicKey = $request->getPublicKey();
$imageIdentifier = $request->getImageIdentifier();
$database = $event->getDatabase();
$model = new Model\Metadata();
$model->setData($database->getMetadata($publicKey, $imageIdentifier));
$response->setModel($model)->setLastModified($database->getLastModified($publicKey, $imageIdentifier));
}
/**
* {@inheritdoc}
*/
public function formatMetadata(Model\Metadata $model)
{
$metadata = '';
foreach ($model->getData() as $key => $value) {
$metadata .= '<tag key="' . $key . '">' . $value . '</tag>';
}
return <<<METADATA
<?xml version="1.0" encoding="UTF-8"?>
<imbo>
<metadata>{$metadata}</metadata>
</imbo>
METADATA;
}
/**
* {@inheritdoc}
*/
public function formatMetadataModel(Model\Metadata $model)
{
$metadata = $this->formatMetadata($model->getData());
return <<<METADATA
<?xml version="1.0" encoding="UTF-8"?>
<imbo>
<metadata>{$metadata}</metadata>
</imbo>
METADATA;
}
/**
* {@inheritdoc}
*/
public function formatMetadata(Model\Metadata $model)
{
return $this->encode($model->getData() ?: new stdClass());
}
