NAME

       mongoc_apm_topology_changed_get_previous_description                                     -
       mongoc_apm_topology_changed_get_previous_description()

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

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