Function DbStatsCoordinator

pg_documentdb/src/commands/db_stats.c:240–264

* The core logic for dbStats on the entry point function * i.e. the Coordinator of the dbStats. * This function simply calls the "worker" dbStats against * all available nodes, and then aggregates/merges the results into * the necessary wire protocol format. */

 * the necessary wire protocol format.
 */
static pgbson *
DbStatsCoordinator(Datum databaseName, int32 scale)
{
	if (scale < 1)
	{
		ereport(ERROR, (errcode(ERRCODE_DOCUMENTDB_LOCATION51024), errmsg(
							"scale has to be > 0")));
	}

	StringInfo namespaceString = makeStringInfo();

	appendStringInfo(namespaceString, "%.*s",
					 (int) VARSIZE_ANY_EXHDR(databaseName),
					 (char *) VARDATA_ANY(databaseName));

	DbStatsResult result = { 0 };
	result.db = namespaceString->data;
	result.scaleFactor = scale;
	result.ok = 1;

	BuildResultData(databaseName, &result, scale);
	pgbson *response = BuildResponseMessage(&result);

	return response;
}


/*