/**
* Checks if index exists by index name, returns true or false
*
* @param null $index_name
*
* @return bool
*/
public function index_exists($index_name = null)
{
$index_url = ep_get_index_url($index_name);
$request_args = array('headers' => $this->format_request_headers());
$request = wp_remote_head($index_url, apply_filters('ep_index_exists_request_args', $request_args, $index_name));
// 200 means the index exists
// 404 means the index was non-existent
if (!is_wp_error($request) && (200 === wp_remote_retrieve_response_code($request) || 404 === wp_remote_retrieve_response_code($request))) {
if (404 === wp_remote_retrieve_response_code($request)) {
return false;
}
if (200 === wp_remote_retrieve_response_code($request)) {
return true;
}
}
return false;
}
/**
* Search for posts under a specific site index or the global index ($site_id = 0).
*
* @param intval $post_id
* @since 1.1.1
* @return array
*/
public function more_like_this($post_id, $scope = 'current')
{
$index = $this->_get_index($scope);
$index_url = ep_get_index_url($index);
$url = $index_url . "/post/{$post_id}/_mlt";
$request = wp_remote_request($url, array('method' => 'GET'));
if (!is_wp_error($request)) {
// Allow for direct response retrieval
do_action('ep_retrieve_raw_response', $request, array(), $scope);
$response_body = wp_remote_retrieve_body($request);
$response = json_decode($response_body, true);
if ($this->is_empty_search($response)) {
return array('found_posts' => 0, 'posts' => array());
}
$hits = $response['hits']['hits'];
// Check for and store aggregations
if (!empty($response['aggregations'])) {
do_action('ep_retrieve_aggregations', $response['aggregations'], $args, $scope);
}
$posts = array();
foreach ($hits as $hit) {
$post = $hit['_source'];
$post['site_id'] = $this->parse_site_id($hit['_index']);
$posts[] = apply_filters('ep_retrieve_the_post', $post, $hit);
}
return array('found_posts' => $response['hits']['total'], 'posts' => $posts);
}
return array('found_posts' => 0, 'posts' => array());
}