/**
* Switches an index to become the new target for an alias. Only applies for
* indexes that are set to use aliases.
*
* $force will delete an index encountered where an alias is expected.
*
* @param IndexConfig $indexConfig
* @param Index $index
* @param bool $force
*
* @throws AliasIsIndexException
* @throws \RuntimeException
*/
public function switchIndexAlias(IndexConfig $indexConfig, Index $index, $force = false)
{
$client = $index->getClient();
$aliasName = $indexConfig->getElasticSearchName();
$oldIndexName = null;
$newIndexName = $index->getName();
try {
$oldIndexName = $this->getAliasedIndex($client, $aliasName);
} catch (AliasIsIndexException $e) {
if (!$force) {
throw $e;
}
$this->deleteIndex($client, $aliasName);
}
try {
$aliasUpdateRequest = $this->buildAliasUpdateRequest($oldIndexName, $aliasName, $newIndexName);
$client->request('_aliases', 'POST', $aliasUpdateRequest);
} catch (ExceptionInterface $e) {
$this->cleanupRenameFailure($client, $newIndexName, $e);
}
// Delete the old index after the alias has been switched
if (null !== $oldIndexName) {
$this->deleteIndex($client, $oldIndexName);
}
}
/**
* Switches an index to become the new target for an alias. Only applies for
* indexes that are set to use aliases.
*
* $force will delete an index encountered where an alias is expected.
*
* @param IndexConfig $indexConfig
* @param Index $index
* @param bool $force
* @throws AliasIsIndexException
* @throws \RuntimeException
*/
public function switchIndexAlias(IndexConfig $indexConfig, Index $index, $force = false)
{
$client = $index->getClient();
$aliasName = $indexConfig->getElasticSearchName();
$oldIndexName = false;
$newIndexName = $index->getName();
try {
$aliasedIndexes = $this->getAliasedIndexes($client, $aliasName);
} catch (AliasIsIndexException $e) {
if (!$force) {
throw $e;
}
$this->deleteIndex($client, $aliasName);
$aliasedIndexes = array();
}
if (count($aliasedIndexes) > 1) {
throw new \RuntimeException(sprintf('Alias %s is used for multiple indexes: [%s].
Make sure it\'s either not used or is assigned to one index only', $aliasName, join(', ', $aliasedIndexes)));
}
$aliasUpdateRequest = array('actions' => array());
if (count($aliasedIndexes) === 1) {
// if the alias is set - add an action to remove it
$oldIndexName = $aliasedIndexes[0];
$aliasUpdateRequest['actions'][] = array('remove' => array('index' => $oldIndexName, 'alias' => $aliasName));
}
// add an action to point the alias to the new index
$aliasUpdateRequest['actions'][] = array('add' => array('index' => $newIndexName, 'alias' => $aliasName));
try {
$client->request('_aliases', 'POST', $aliasUpdateRequest);
} catch (ExceptionInterface $renameAliasException) {
$additionalError = '';
// if we failed to move the alias, delete the newly built index
try {
$index->delete();
} catch (ExceptionInterface $deleteNewIndexException) {
$additionalError = sprintf('Tried to delete newly built index %s, but also failed: %s', $newIndexName, $deleteNewIndexException->getMessage());
}
throw new \RuntimeException(sprintf('Failed to updated index alias: %s. %s', $renameAliasException->getMessage(), $additionalError ?: sprintf('Newly built index %s was deleted', $newIndexName)), 0, $renameAliasException);
}
// Delete the old index after the alias has been switched
if ($oldIndexName) {
$oldIndex = new Index($client, $oldIndexName);
try {
$oldIndex->delete();
} catch (ExceptionInterface $deleteOldIndexException) {
throw new \RuntimeException(sprintf('Failed to delete old index %s with message: %s', $oldIndexName, $deleteOldIndexException->getMessage()), 0, $deleteOldIndexException);
}
}
}
public function searchJournal($status = 3, $published = true)
{
$bool = new Query\Bool();
$match = new Query\Match();
$match->setField('status', $status);
$bool->addMust($match);
$match = new Query\Match();
$match->setField('published', $published);
$bool->addMust($match);
if (!empty($this->filter)) {
foreach ($this->filter as $key => $filter) {
$filterObj = new Query\Match();
$this->applyFilter($filterObj, $key, $filter);
$bool->addMust($filterObj);
}
}
$query = new Query();
$query->setQuery($bool);
$query->setFrom(($this->getPage() - 1) * $this->getLimit());
$query->setSize($this->getLimit());
$aggregation = new Terms('institution');
$aggregation->setField('institution.institution_type.id');
$aggregation->setOrder('_count', 'desc');
$qb = $this->em->createQueryBuilder();
$qb->select('count(r.id)')->from('OjsJournalBundle:InstitutionTypes', 'r');
$aggregation->setSize($qb->getQuery()->getSingleScalarResult());
$query->addAggregation($aggregation);
$aggregation = new Terms('subject');
$aggregation->setField('subjects.id');
$aggregation->setOrder('_count', 'desc');
$qb = $this->em->createQueryBuilder();
$qb->select('count(r.id)')->from('OjsJournalBundle:Subject', 'r');
$aggregation->setSize($qb->getQuery()->getSingleScalarResult());
$query->addAggregation($aggregation);
$search = $this->index->search($query);
$result = $search->getResults();
$transformer = new ElasticaToModelTransformer($this->registry, 'OjsJournalBundle:Journal');
$transformer->setPropertyAccessor($this->propertyAccessor);
$this->result = $transformer->transform($result);
$this->setCount($search->getTotalHits());
$this->addAggregation('institution', $this->transform($search->getAggregation('institution')['buckets'], 'OjsJournalBundle:InstitutionTypes'));
$this->addAggregation('subject', $this->transform($search->getAggregation('subject')['buckets'], 'OjsJournalBundle:Subject'));
return $this;
}
