/**
* 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);
}
}
/**
* Builds mappings for an entire index.
*
* @param IndexConfig $indexConfig
* @return array
*/
public function buildIndexMapping(IndexConfig $indexConfig)
{
$typeMappings = array();
foreach ($indexConfig->getTypes() as $typeConfig) {
$typeMappings[$typeConfig->getName()] = $this->buildTypeMapping($typeConfig);
}
$mapping = array('mappings' => $typeMappings, 'settings' => $indexConfig->getSettings());
return $mapping;
}
/**
* 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);
}
}
}
/**
* Builds mappings for an entire index.
*
* @param IndexConfig $indexConfig
* @return array
*/
public function buildIndexMapping(IndexConfig $indexConfig)
{
$typeMappings = array();
foreach ($indexConfig->getTypes() as $typeConfig) {
$typeMappings[$typeConfig->getName()] = $this->buildTypeMapping($typeConfig);
}
$mapping = array();
if ($typeMappings) {
$mapping['mappings'] = $typeMappings;
}
// 'warmers' => $indexConfig->getWarmers(),
$settings = $indexConfig->getSettings();
if ($settings) {
$mapping['settings'] = $settings;
}
return $mapping;
}
