mongoc_client_select_server()¶
Synopsis¶
mongoc_server_description_t *
mongoc_client_select_server (mongoc_client_t *client,
bool for_writes,
const mongoc_read_prefs_t *prefs,
bson_error_t *error);
Choose a server for an operation, according to the logic described in the Server Selection Spec.
Use this function only for building a language driver that wraps the C Driver. When writing applications in C, higher-level functions automatically select a suitable server.
Parameters¶
client
: A mongoc_client_t.for_writes
: Whether to choose a server suitable for writes or reads.prefs
: An optional mongoc_read_prefs_t. Iffor_writes
is true,prefs
must be NULL. Otherwise, useprefs
to customize server selection, or pass NULL to use the read preference configured on the client.error
: An optional location for a bson_error_t orNULL
.
Returns¶
A mongoc_server_description_t that must be freed with mongoc_server_description_destroy(). If no suitable server is found, returns NULL and error
is filled out.