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Implement "repmgr cluster cleanup"

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This commit is contained in:
Ian Barwick
2017-09-11 13:48:46 +09:00
parent a9f4a027a7
commit b6b31b15b2
8 changed files with 227 additions and 24 deletions
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101
dbutils.c
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@@ -1661,6 +1661,31 @@ checkpoint(PGconn *conn)
return;
}
/* assumes superuser connection */
bool
vacuum_table(PGconn *primary_conn, const char *table)
{
PQExpBufferData query;
bool success = true;
PGresult *res = NULL;
initPQExpBuffer(&query);
appendPQExpBuffer(&query, "VACUUM %s", table);
res = PQexec(primary_conn, query.data);
termPQExpBuffer(&query);
log_debug("%i", (int) PQresultStatus(res));
if (PQresultStatus(res) != PGRES_COMMAND_OK)
{
success = false;
}
PQclear(res);
return success;
}
/* ===================== */
/* Node record functions */
@@ -3408,8 +3433,7 @@ is_server_available(const char *conninfo)
/* ==================== */
void
add_monitoring_record(
PGconn *primary_conn,
add_monitoring_record(PGconn *primary_conn,
PGconn *local_conn,
int primary_node_id,
int local_node_id,
@@ -3478,6 +3502,79 @@ add_monitoring_record(
}
int
get_number_of_monitoring_records_to_delete(PGconn *primary_conn, int keep_history)
{
PQExpBufferData query;
int record_count = -1;
PGresult *res = NULL;
initPQExpBuffer(&query);
appendPQExpBuffer(&query,
"SELECT COUNT(*) "
" FROM repmgr.monitoring_history "
" WHERE age(now(), last_monitor_time) >= '%d days'::interval",
keep_history);
res = PQexec(primary_conn, query.data);
termPQExpBuffer(&query);
if (PQresultStatus(res) != PGRES_TUPLES_OK)
{
log_error(_("unable to query number of monitoring records to clean up"));
log_detail("%s", PQerrorMessage(primary_conn));
PQclear(res);
PQfinish(primary_conn);
exit(ERR_DB_QUERY);
}
else
{
record_count = atoi(PQgetvalue(res, 0, 0));
}
PQclear(res);
return record_count;
}
bool
delete_monitoring_records(PGconn *primary_conn, int keep_history)
{
PQExpBufferData query;
bool success = true;
PGresult *res = NULL;
initPQExpBuffer(&query);
if (keep_history > 0)
{
appendPQExpBuffer(&query,
"DELETE FROM repmgr.monitoring_history "
" WHERE age(now(), last_monitor_time) >= '%d days'::interval ",
keep_history);
}
else
{
appendPQExpBuffer(&query,
"TRUNCATE TABLE repmgr.monitoring_history");
}
res = PQexec(primary_conn, query.data);
termPQExpBuffer(&query);
if (PQresultStatus(res) != PGRES_COMMAND_OK)
{
success = false;
}
PQclear(res);
return success;
}
/*
* node voting functions
*