(mongodb >=1.13.0)
MongoDB\Driver\Monitoring\SDAMSubscriber::topologyChanged — Notification method for a topology description change
$event): voidIf the subscriber has been registered, the driver will call this method when the topology's description has changed.
event (MongoDB\Driver\Monitoring\TopologyChangedEvent)An event object encapsulating information about the changed topology description.
没有返回值。