function cdn_advanced_get_servers in CDN 7.2

Same name and namespace in other branches

1. 6.2 cdn.advanced.inc \cdn_advanced_get_servers()

Gets the servers on which a file is available when advanced mode is enabled.

Parameters

$path: The path to get the servers for.

1 call to cdn_advanced_get_servers()

cdn_file_url_alter in ./cdn.module

Implements hook_file_url_alter().

File

./cdn.advanced.inc, line 18

Logic for advanced mode ("File Conveyor mode" in the UI).

Code

function cdn_advanced_get_servers($path) {
  static $absolute_path_prefix;
  if (!isset($absolute_path_prefix)) {
    $absolute_path_prefix = realpath('.');
  }
  $db = _cdn_advanced_get_db_connection();

  // In case no connection to the database could be made, pretend the file was
  // not found in the synced files database.
  if (!$db) {
    return array();
  }

  // Get the real path to the file.
  // TRICKY: we used to do this here:
  //   $input_file = realpath('./' . $path);
  // But this fails when a file has been deleted by File Conveyor. This new
  // approach only works when no symbolic links are used.
  $input_file = $absolute_path_prefix . '/' . $path;

  // Retrieve the URLs of the file on the CDN.
  $sql = "SELECT url, server\n          FROM synced_files\n          WHERE input_file = :input_file";
  $stmt = $db
    ->prepare($sql);
  $stmt
    ->bindParam(':input_file', $input_file, PDO::PARAM_STR);
  $stmt
    ->execute();
  $servers = $stmt
    ->fetchAll(PDO::FETCH_ASSOC);
  return $servers;
}