function update_status_refresh in Update Status 5.2

Same name and namespace in other branches

1. 5 update_status.module \update_status_refresh()

Fetch project info via XML from a central server.

3 calls to update_status_refresh()

update_status_cron in ./update_status.module

Implementation of hook_cron().

update_status_get_available in ./update_status.module

Internal helper to try to get the update information from the cache if possible, and to refresh the cache when necessary.

update_status_manual_status in ./update_status.module

Callback to manually check the update status without cron.

File

./update_status.module, line 1520

Code

function update_status_refresh() {
  global $base_url;
  static $fail = array();

  // Since we're fetching new available update data, we want to clear
  // our cache of both the projects we care about, and the current update
  // status of the site. We do *not* want to clear the cache of available
  // releases just yet, since that data (even if it's stale) can be useful
  // during update_status_get_projects(); for example, to modules that
  // implement hook_system_info_alter() such as cvs_deploy.
  _update_status_cache_clear('update_status_project_projects');
  _update_status_cache_clear('update_status_project_data');

  // If not in 'safe mode', increase the maximum execution time:
  if (!ini_get('safe_mode')) {
    set_time_limit(300);
  }
  $available = array();
  $data = array();
  $site_key = md5($base_url . drupal_get_private_key());
  $projects = update_status_get_projects();

  // Now that we have the list of projects, we should also clear our cache of
  // available release data, since even if we fail to fetch new data, we need
  // to clear out the stale data at this point.
  _update_status_cache_clear('update_status_available_releases');
  $max_fetch_attempts = variable_get('update_status_max_fetch_attempts', UPDATE_STATUS_MAX_FETCH_ATTEMPTS);
  foreach ($projects as $key => $project) {
    $url = _update_status_build_fetch_url($project, $site_key);
    $fetch_url_base = _update_status_get_fetch_url_base($project);
    if (empty($fail[$fetch_url_base]) || count($fail[$fetch_url_base]) < $max_fetch_attempts) {
      $xml = drupal_http_request($url);
      if (isset($xml->data)) {
        $data[] = $xml->data;
      }
      else {

        // Connection likely broken; prepare to give up.
        $fail[$fetch_url_base][$key] = 1;
      }
    }
    else {

      // Didn't bother trying to fetch.
      $fail[$fetch_url_base][$key] = 1;
    }
  }
  if ($data) {
    $parser = new update_status_xml_parser();
    $available = $parser
      ->parse($data);

    // Record the projects where we failed to fetch data.
    foreach ($fail as $fetch_url_base => $failures) {
      foreach ($failures as $key => $value) {
        $available[$key]['project_status'] = 'not-fetched';
      }
    }
    _update_status_cache_set('update_status_available_releases', serialize($available), time() + 60 * 60 * 24);
    watchdog('update_status', t('Attempted to fetch information about all available new releases and updates.'), WATCHDOG_NOTICE, l(t('view'), 'admin/logs/updates'));
  }
  else {
    watchdog('update_status', 'Unable to fetch any information on available new releases and updates.', WATCHDOG_ERROR, l(t('view'), 'admin/logs/updates'));
  }

  // Whether this worked or not, we did just (try to) check for updates.
  variable_set('update_status_last', time());
  return $available;
}