SYNOPSIS

          const mongoc_topology_description_t *
          mongoc_apm_topology_changed_get_previous_description (
             const mongoc_apm_topology_changed_t *event);

       Returns  this  event's  previous  description.  The data is only valid in the scope of the
       callback that receives this event; copy it if it  will  be  accessed  after  the  callback
       returns.

PARAMETERS

       • event: A mongoc_apm_topology_changed_t.

RETURNS

       A mongoc_topology_description_t that should not be modified or freed.

       SEE ALSO:
          Introduction to Application Performance Monitoring

AUTHOR

       MongoDB, Inc

COPYRIGHT

       2017-present, MongoDB, Inc

1.26.0                                    MONGOC1APM0TOPOLOGY_CHANGED_GET_PREVIOUS_DESCRIPTION(3)