/**
* Return a list of Drupal\Prod\Stats\Rrd\Definitions from the Database.
*
* All known definitions for the given set of providers are returned.
* Note that this function can only retrieve providers attached to the same
* StatTask (as providers ids are managed by each stat task).
*
* @param int $task_id id of the Stat task for the given providers
*
* @param array $providers_ids list of Providers id
*
* @return multitype:\Drupal\Prod\Stats\Rrd\Definition
*/
public static function loadDefinitionsByProviders($task_id, $providers_ids)
{
$results = db_select('prod_rrd_settings', 's')->fields('s')->condition('ptq_stat_tid', $task_id, '=')->condition('prs_stat_pid', $providers_ids, 'IN')->execute();
$objects = array();
foreach ($results as $result) {
$rrdDef = new Definition($result->ptq_stat_tid, $result->prs_stat_pid, $result->prs_stat_col, $result->prs_interval, $result->prs_points_per_aggregate, $result->prs_points_per_graph);
$rrdDef->setLastTimestamp($result->prs_last_timestamp)->setPointsBeforeLevel($result->prs_points_before_level_2, $result->prs_points_before_level_3, $result->prs_points_before_level_4, $result->prs_points_before_level_5)->setId($result->prs_id);
$objects[] = $rrdDef;
}
return $objects;
}
/**
* Preload All RRD definitions stored in database for all providers
* listed in $this->providers_id_list (each provider can have more than
* one RRD definition, one for each provided stat).
*/
protected function _preloadRrdDefinitions($stat_task_id)
{
$results = Definition::loadDefinitionsByProviders($stat_task_id, $this->providers_id_list);
foreach ($results as $rrdDef) {
$this->_storeRRDDef($stat_task_id, $rrdDef);
}
}