public function saveBlogPost(BlogPostInterface $blog)
{
$identifier = $blog->getIdentifier();
$blogJson = json_encode($blog, JSON_PRETTY_PRINT);
$obj = new Object($identifier);
$obj->setContent($blogJson);
$obj->setContentType('application/json');
try {
$this->bucket->put($obj);
} catch (RiakException $ex) {
// Retry
$this->bucket->put($obj);
}
}
/**
* On-read conflict resolution. Applied approach here is last write wins.
* Specific needs may override this method to apply alternate conflict resolutions.
*
* {@internal Riak does not attempt to resolve a write conflict, and store
* it as sibling of conflicted one. By following this approach, it is up to
* the next read to resolve the conflict. When this happens, your fetched
* object will have a list of siblings (read as a list of objects).
* In our specific case, we do not care about the intermediate ones since
* they are all the same read from storage, and we do apply a last sibling
* (last write) wins logic.
* If by any means our resolution generates another conflict, it'll up to
* next read to properly solve it.}
*
* @param string $id
* @param string $vClock
* @param array $objectList
*
* @return \Riak\Object
*/
protected function resolveConflict($id, $vClock, array $objectList)
{
// Our approach here is last-write wins
$winner = $objectList[count($objectList)];
$putInput = new Input\PutInput();
$putInput->setVClock($vClock);
$mergedObject = new Object($id);
$mergedObject->setContent($winner->getContent());
$this->bucket->put($mergedObject, $putInput);
return $mergedObject;
}
/**
* {@inheritdoc}
*/
protected function doSave($id, $data, $lifeTime = 0)
{
try {
$object = new Object($id);
$object->setContent(serialize($data));
if ($lifeTime > 0) {
$object->addMetadata(self::EXPIRES_HEADER, (string) (time() + $lifeTime));
}
$this->bucket->put($object);
return true;
} catch (Exception\RiakException $e) {
// Do nothing
}
return false;
}
