public function hasAssignedAlarms($instanceIds) { $result = $this->client->describeAlarmsForMetric(array('MetricName' => 'CPUUtilization', 'Namespace' => $this->getNamespace(), 'Dimensions' => $this->getDimensions($instanceIds))); $metricAlarms = $result->getPath('MetricAlarms'); return !empty($metricAlarms); }