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node status: improve output and documentation

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In the default text output mode, list inactive slots.

In CSV output mode, list inactive slots as additional information;
add output line with number of missing slots and a list thereof.

Also document --csv output mode.
This commit is contained in:
Ian Barwick
2018-06-22 11:44:56 +09:00
parent 4d70a667fb
commit fcf237fe31
5 changed files with 113 additions and 12 deletions
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46
dbutils.c
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@@ -2933,8 +2933,7 @@ get_datadir_configuration_files(PGconn *conn, KeyValueList *list)
for (i = 0; i < PQntuples(res); i++)
{
key_value_list_set(
list,
key_value_list_set(list,
PQgetvalue(res, i, 1),
PQgetvalue(res, i, 0));
}
@@ -3671,7 +3670,7 @@ get_slot_record(PGconn *conn, char *slot_name, t_replication_slot *record)
int
get_free_replication_slots(PGconn *conn)
get_free_replication_slot_count(PGconn *conn)
{
PQExpBufferData query;
PGresult *res = NULL;
@@ -3708,6 +3707,47 @@ get_free_replication_slots(PGconn *conn)
}
int
get_inactive_replication_slots(PGconn *conn, KeyValueList *list)
{
PQExpBufferData query;
PGresult *res = NULL;
int i, inactive_slots = 0;
initPQExpBuffer(&query);
appendPQExpBuffer(&query,
" SELECT slot_name, slot_type "
" FROM pg_catalog.pg_replication_slots "
" WHERE active IS FALSE "
" ORDER BY slot_name ");
res = PQexec(conn, query.data);
termPQExpBuffer(&query);
if (PQresultStatus(res) != PGRES_TUPLES_OK)
{
log_error(_("unable to execute replication slot query"));
log_detail("%s", PQerrorMessage(conn));
PQclear(res);
return -1;
}
inactive_slots = PQntuples(res);
for (i = 0; i < inactive_slots; i++)
{
key_value_list_set(list,
PQgetvalue(res, i, 0),
PQgetvalue(res, i, 1));
}
PQclear(res);
return inactive_slots;
}
/* ==================== */
/* tablespace functions */
/* ==================== */