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Add function to execute "IDENTIFY_SYSTEM"

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Ian Barwick
2017-08-11 22:01:02 +09:00
parent f972aec198
commit 50b82f785e
4 changed files with 57 additions and 0 deletions
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22
dbutils.c
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@@ -1442,6 +1442,28 @@ get_replication_lag_seconds(PGconn *conn)
}
bool
identify_system(PGconn *replconn, t_system_identification *identification)
{
PGresult *res;
res = PQexec(replconn, "IDENTIFY_SYSTEM;");
if (PQresultStatus(res) != PGRES_TUPLES_OK || !PQntuples(res))
{
PQclear(res);
return false;
}
strncpy(identification->systemid, PQgetvalue(res, 0, 0), MAXLEN);
identification->timeline = atoi(PQgetvalue(res, 0, 1));
identification->xlogpos = parse_lsn(PQgetvalue(res, 0, 2));
PQclear(res);
return true;
}
/* ================ */
/* result functions */
/* ================ */