public function savePreferences($context)
{
$settings = array_map('trim', $context['settings']['elasticsearch']);
$index_to_delete = NULL;
$index_to_create = NULL;
// index name has changed, so delete the original and create new
if ($settings['index-name'] !== $settings['index_name_original']) {
$index_to_delete = $settings['index_name_original'];
$index_to_create = $settings['index-name'];
}
// only try to delete existing index if it exists (i.e. don't run this
// the first time the extension is configured and there's no existing index)
if (!empty($index_to_delete)) {
// instantiate extension's ES helper class
ElasticSearch::init($settings['host'], $index_to_delete, $settings['username'], $settings['password']);
// delete original index
$index = ElasticSearch::getClient()->getIndex($index_to_delete);
if ($index->exists()) {
$index->delete();
}
// reset
ElasticSearch::flush();
}
if (!empty($index_to_create)) {
// instantiate extension's ES helper class
ElasticSearch::init($settings['host'], $index_to_create, $settings['username'], $settings['password']);
// create new index
$index = ElasticSearch::getClient()->getIndex($index_to_create);
$index_settings_file = WORKSPACE . '/elasticsearch/index.json';
$index_settings = array();
if (file_exists($index_settings_file)) {
$index_settings = json_decode(file_get_contents($index_settings_file), TRUE);
} else {
$index_settings = array();
}
if (is_null($index_settings)) {
throw new Exception('ElasticSearch: workspace/elasticsearch/index.json is not valid JSON');
}
$index->create($index_settings, TRUE);
}
unset($context['settings']['elasticsearch']['index_name_original']);
}
