/**
* Returns an array of index names for this collection
*
* @link http://www.php.net/manual/en/mongocollection.getindexinfo.php
* @return array Returns a list of index names.
*/
public function getIndexInfo()
{
$convertIndex = function (\MongoDB\Model\IndexInfo $indexInfo) {
return ['v' => $indexInfo->getVersion(), 'key' => $indexInfo->getKey(), 'name' => $indexInfo->getName(), 'ns' => $indexInfo->getNamespace()];
};
return array_map($convertIndex, iterator_to_array($this->collection->listIndexes()));
}
/**
* Ensure index of correct specification and a unique name whether the specification or name already exist or not.
* Will not create index if $index is a prefix of an existing index
*
* @param array $index index to create in same format as \MongoDB\Collection::createIndex()
*
* @return void
*
* @throws \Exception couldnt create index after 5 attempts
*/
private function ensureIndex(array $index)
{
//if $index is a prefix of any existing index we are good
foreach ($this->collection->listIndexes() as $existingIndex) {
$slice = array_slice($existingIndex['key'], 0, count($index), true);
if ($slice === $index) {
return;
}
}
for ($i = 0; $i < 5; ++$i) {
for ($name = uniqid(); strlen($name) > 0; $name = substr($name, 0, -1)) {
//creating an index with same name and different spec does nothing.
//creating an index with same spec and different name does nothing.
//so we use any generated name, and then find the right spec after we have called,
//and just go with that name.
try {
$this->collection->createIndex($index, ['name' => $name, 'background' => true]);
} catch (\MongoDB\Exception\Exception $e) {
//this happens when the name was too long, let continue
}
foreach ($this->collection->listIndexes() as $existingIndex) {
if ($existingIndex['key'] === $index) {
return;
}
}
}
}
throw new \Exception('couldnt create index after 5 attempts');
//@codeCoverageIgnoreEnd
}
/**
* Returns an array of index names for this collection
*
* @link http://www.php.net/manual/en/mongocollection.getindexinfo.php
* @return array Returns a list of index names.
*/
public function getIndexInfo()
{
$convertIndex = function (\MongoDB\Model\IndexInfo $indexInfo) {
$infos = ['v' => $indexInfo->getVersion(), 'key' => $indexInfo->getKey(), 'name' => $indexInfo->getName(), 'ns' => $indexInfo->getNamespace()];
if ($indexInfo->isUnique()) {
$infos['unique'] = true;
}
return $infos;
};
return array_map($convertIndex, iterator_to_array($this->collection->listIndexes()));
}
