oracular (3) mongoc_client_get_database_names_with_opts.3.gz

SYNOPSIS

          char **
          mongoc_client_get_database_names_with_opts (mongoc_client_t *client,
                                                      const bson_t *opts,
                                                      bson_error_t *error)
             BSON_GNUC_WARN_UNUSED_RESULT;

       This function queries the MongoDB server for a list of known databases.

       This  function is considered a retryable read operation.  Upon a transient error (a network error, errors
       due to replica set failover, etc.) the operation is safely retried once.  If retryreads is false  in  the
       URI (see mongoc_uri_t) the retry behavior does not apply.

PARAMETERS

       • client: A mongoc_client_t.

       • opts: A bson_t containing additional options.

       • error: An optional location for a bson_error_t or NULL.

       opts may be NULL or a BSON document with additional command options:

       • sessionId: First, construct a mongoc_client_session_t with mongoc_client_start_session(). You can begin
         a     transaction     with     mongoc_client_session_start_transaction(),     optionally     with     a
         mongoc_transaction_opt_t    that    overrides    the   options   inherited   from   client,   and   use
         mongoc_client_session_append()  to  add   the   session   to   opts.   See   the   example   code   for
         mongoc_client_session_t.

       • serverId:  To  target  a  specific  server, include an int32 "serverId" field. Obtain the id by calling
         mongoc_client_select_server(), then mongoc_server_description_id() on its return value.

       For a list of all options, see the MongoDB Manual entry on the listDatabases command.

ERRORS

       Errors are propagated via the error parameter.

RETURNS

       A  NULL  terminated  vector  of  NULL-byte  terminated  strings.  The  result  should  be  freed  with  ‐
       bson_strfreev().

       NULL is returned upon failure and error is set.

EXAMPLES

          {
             bson_error_t error;
             char **strv;
             unsigned i;

             if ((strv = mongoc_client_get_database_names_with_opts (client, NULL, &error))) {
                for (i = 0; strv[i]; i++)
                   printf ("%s\n", strv[i]);
                bson_strfreev (strv);
             } else {
                fprintf (stderr, "Command failed: %s\n", error.message);
             }
          }

AUTHOR

       MongoDB, Inc

COPYRIGHT

       2017-present, MongoDB, Inc