mongoc_topology_description_has_writable_server
mongoc_topology_description_has_writable_server()
Synopsis
bool mongoc_topology_description_has_writable_server ( mongoc_topology_description_t *td);
Determines if the topology has a writable server available, such as a primary, mongos, or standalone. This function uses the driver's current knowledge of the state of the MongoDB server or servers it is connected to; it does no I/O and it does not block.
Use this function in a topology-changed callback registered with mongoc_apm_set_topology_changed_cb. For historical reasons, the mongoc_topology_description_t passed to the callback is a const pointer, you must cast away const to pass the pointer to mongoc_topology_description_has_writable_server.
Parameters
- td: A mongoc_topology_description_t.
Returns
True if there is a known writable server.
See Also
Introduction to Application Performance Monitoring
Author
MongoDB, Inc
Copyright
2017-present, MongoDB, Inc
Info
Feb 04, 2021 1.17.4 libmongoc