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repmgr standby follow: main code

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This commit is contained in:
Ian Barwick
2017-06-16 21:38:53 +09:00
parent 7b976ef2df
commit 030fdc046b
3 changed files with 335 additions and 7 deletions
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47
dbutils.c
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@@ -1545,6 +1545,49 @@ update_node_record_set_master(PGconn *conn, int this_node_id)
}
/*
* Update node record following change of status
* (e.g. inactive primary converted to standby)
*/
bool
update_node_record_status(PGconn *conn, int this_node_id, char *type, int upstream_node_id, bool active)
{
PQExpBufferData query;
PGresult *res;
initPQExpBuffer(&query);
appendPQExpBuffer(&query,
" UPDATE repmgr.nodes "
" SET type = '%s', "
" upstream_node_id = %i, "
" active = %s "
" WHERE node_id = %i ",
type,
upstream_node_id,
active ? "TRUE" : "FALSE",
this_node_id);
log_verbose(LOG_DEBUG, "update_node_record_status():\n %s", query.data);
res = PQexec(conn, query.data);
termPQExpBuffer(&query);
if (PQresultStatus(res) != PGRES_COMMAND_OK)
{
log_error(_("unable to update node record:\n %s"),
PQerrorMessage(conn));
PQclear(res);
return false;
}
PQclear(res);
return true;
}
bool
delete_node_record(PGconn *conn, int node)
@@ -1906,7 +1949,7 @@ create_replication_slot(PGconn *conn, char *slot_name, int server_version_num, P
slot_name);
}
log_debug(_("create_replication_slot(): Creating slot '%s' on upstream"), slot_name);
log_debug(_("create_replication_slot(): creating slot '%s' on upstream"), slot_name);
log_verbose(LOG_DEBUG, "create_replication_slot():\n%s", query.data);
res = PQexec(conn, query.data);
@@ -1915,7 +1958,7 @@ create_replication_slot(PGconn *conn, char *slot_name, int server_version_num, P
if (!res || PQresultStatus(res) != PGRES_TUPLES_OK)
{
appendPQExpBuffer(error_msg,
_("unable to create slot '%s' on the master node: %s\n"),
_("unable to create slot '%s' on the upstream node: %s\n"),
slot_name,
PQerrorMessage(conn));
PQclear(res);