/**
* Builds the backend-specific configuration form.
*
* @param \Drupal\search_api\ServerInterface $server
* The server that is being created or edited.
*/
public function buildBackendConfigForm(array &$form, FormStateInterface $form_state, ServerInterface $server)
{
$form['backend_config'] = array('#type' => 'container', '#attributes' => array('id' => 'search-api-backend-config-form'), '#tree' => TRUE);
if ($server->hasValidBackend()) {
$backend = $server->getBackend();
if ($backend_form = $backend->buildConfigurationForm(array(), $form_state)) {
// If the backend plugin changed, notify the user.
if (!empty($form_state->getValues()['backend'])) {
drupal_set_message($this->t('Please configure the used backend.'), 'warning');
}
// Modify the backend plugin configuration container element.
$form['backend_config']['#type'] = 'details';
$form['backend_config']['#title'] = $this->t('Configure %plugin backend', array('%plugin' => $backend->label()));
$form['backend_config']['#description'] = $backend->getDescription();
$form['backend_config']['#open'] = TRUE;
// Attach the backend plugin configuration form.
$form['backend_config'] += $backend_form;
}
} elseif (!$server->isNew()) {
drupal_set_message($this->t('The backend plugin is missing or invalid.'), 'error');
}
}
/**
* Retrieves a list of all config files of a server's Solr backend.
*
* @param \Drupal\search_api\ServerInterface $server
* The Solr server whose files should be retrieved.
* @param string $dir_name
* (optional) The directory that should be searched for files. Defaults to the
* root config directory.
*
* @return array
* An associative array of all config files in the given directory. The keys
* are the file names, values are arrays with information about the file. The
* files are returned in alphabetical order and breadth-first.
*
* @throws \Drupal\search_api\SearchApiException
* If a problem occurred while retrieving the files.
*/
public static function getServerFiles(ServerInterface $server, $dir_name = NULL)
{
$response = $server->getBackend()->getFile($dir_name);
// Search for directories and recursively merge directory files.
$files_data = json_decode($response->getBody(), TRUE);
$files_list = $files_data['files'];
$dir_length = strlen($dir_name) + 1;
$result = array('' => array());
foreach ($files_list as $file_name => $file_info) {
// Annoyingly, Solr 4.7 changed the way the admin/file handler returns
// the file names when listing directory contents: the returned name is now
// only the base name, not the complete path from the config root directory.
// We therefore have to check for this case.
if ($dir_name && substr($file_name, 0, $dir_length) !== "{$dir_name}/") {
$file_name = "{$dir_name}/" . $file_name;
}
if (empty($file_info['directory'])) {
$result[''][$file_name] = $file_info;
} else {
$result[$file_name] = static::getServerFiles($server, $file_name);
}
}
ksort($result);
ksort($result['']);
return array_reduce($result, 'array_merge', array());
}
