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"repmgr node ...": fixes for 9.3

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Mainly to account for the lack of replication slots.
This commit is contained in:
Ian Barwick
2017-11-16 11:25:16 +09:00
parent b8b991398a
commit 9165d27f9f
3 changed files with 105 additions and 114 deletions
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31
dbutils.c
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@@ -2593,7 +2593,7 @@ truncate_node_records(PGconn *conn)
}
void
get_node_replication_stats(PGconn *conn, t_node_info *node_info)
get_node_replication_stats(PGconn *conn, int server_version_num, t_node_info *node_info)
{
PQExpBufferData query;
PGresult *res = NULL;
@@ -2602,13 +2602,32 @@ get_node_replication_stats(PGconn *conn, t_node_info *node_info)
appendPQExpBuffer(&query,
" SELECT current_setting('max_wal_senders')::INT AS max_wal_senders, "
" (SELECT COUNT(*) FROM pg_catalog.pg_stat_replication) AS attached_wal_receivers, "
" current_setting('max_replication_slots')::INT AS max_replication_slots, "
" (SELECT COUNT(*) FROM pg_catalog.pg_replication_slots) AS total_replication_slots, "
" (SELECT COUNT(*) FROM pg_catalog.pg_replication_slots WHERE active = TRUE) AS active_replication_slots, "
" (SELECT COUNT(*) FROM pg_catalog.pg_replication_slots WHERE active = FALSE) AS inactive_replication_slots, "
" (SELECT COUNT(*) FROM pg_catalog.pg_stat_replication) AS attached_wal_receivers, ");
/* no replication slots in PostgreSQL 9.3 */
if (server_version_num < 90400)
{
appendPQExpBuffer(&query,
" 0 AS max_replication_slots, "
" 0 AS total_replication_slots, "
" 0 AS active_replication_slots, "
" 0 AS inactive_replication_slots, ");
}
else
{
appendPQExpBuffer(&query,
" current_setting('max_replication_slots')::INT AS max_replication_slots, "
" (SELECT COUNT(*) FROM pg_catalog.pg_replication_slots) AS total_replication_slots, "
" (SELECT COUNT(*) FROM pg_catalog.pg_replication_slots WHERE active = TRUE) AS active_replication_slots, "
" (SELECT COUNT(*) FROM pg_catalog.pg_replication_slots WHERE active = FALSE) AS inactive_replication_slots, ");
}
appendPQExpBuffer(&query,
" pg_catalog.pg_is_in_recovery() AS in_recovery");
res = PQexec(conn, query.data);
termPQExpBuffer(&query);