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repmgrd: initial BDR monitoring support

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This commit is contained in:
Ian Barwick
2017-07-10 23:58:59 +09:00
parent dddea9814b
commit 2962ffe605
3 changed files with 521 additions and 10 deletions
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125
dbutils.c
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@@ -1134,7 +1134,6 @@ get_repmgr_extension_status(PGconn *conn)
}
/* 1. Check extension is actually available */
if (PQntuples(res) == 0)
{
return REPMGR_UNAVAILABLE;
@@ -1234,6 +1233,7 @@ parse_node_type(const char *type)
return UNKNOWN;
}
const char *
get_node_type_string(t_server_type type)
{
@@ -1311,6 +1311,24 @@ get_node_record_by_name(PGconn *conn, const char *node_name, t_node_info *node_i
}
t_node_info *
get_node_record_pointer(PGconn *conn, int node_id)
{
t_node_info *node_info = pg_malloc0(sizeof(t_node_info));
RecordStatus record_status;
record_status = get_node_record(conn, node_id, node_info);
if (record_status != RECORD_FOUND)
{
pfree(node_info);
return NULL;
}
return node_info;
}
bool
get_primary_node_record(PGconn *conn, t_node_info *node_info)
{
@@ -1444,11 +1462,42 @@ get_active_sibling_node_records(PGconn *conn, int node_id, int upstream_node_id,
termPQExpBuffer(&query);
/* res cleared by this function */
_populate_node_records(res, node_list);
return;
}
void
get_node_records_by_priority(PGconn *conn, NodeInfoList *node_list)
{
PQExpBufferData query;
PGresult *res;
clear_node_info_list(node_list);
initPQExpBuffer(&query);
appendPQExpBuffer(
&query,
" SELECT node_id, type, upstream_node_id, node_name, conninfo, repluser, slot_name, location, priority, active"
" FROM repmgr.nodes "
"ORDER BY priority DESC, node_name ");
log_verbose(LOG_DEBUG, "get_node_records_by_priority():\n%s", query.data);
res = PQexec(conn, query.data);
termPQExpBuffer(&query);
/* res cleared by this function */
_populate_node_records(res, node_list);
return;
}
bool
create_node_record(PGconn *conn, char *repmgr_action, t_node_info *node_info)
{
@@ -1573,6 +1622,41 @@ _create_update_node_record(PGconn *conn, char *action, t_node_info *node_info)
return true;
}
bool
update_node_record_set_active(PGconn *conn, int this_node_id, bool active)
{
PQExpBufferData query;
PGresult *res;
initPQExpBuffer(&query);
appendPQExpBuffer(
&query,
"UPDATE repmgr.nodes SET active = %s "
" WHERE id = %i",
active == true ? "TRUE" : "FALSE",
this_node_id);
log_verbose(LOG_DEBUG, "update_node_record_set_active():\n %s", query.data);
res = PQexec(conn, query.data);
termPQExpBuffer(&query);
if (!res || 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
update_node_record_set_primary(PGconn *conn, int this_node_id)
{
@@ -1593,6 +1677,7 @@ update_node_record_set_primary(PGconn *conn, int this_node_id)
" AND active IS TRUE ");
res = PQexec(conn, query.data);
termPQExpBuffer(&query);
if (PQresultStatus(res) != PGRES_COMMAND_OK)
{
@@ -1605,7 +1690,6 @@ update_node_record_set_primary(PGconn *conn, int this_node_id)
}
PQclear(res);
termPQExpBuffer(&query);
initPQExpBuffer(&query);
@@ -1715,6 +1799,43 @@ update_node_record_status(PGconn *conn, int this_node_id, char *type, int upstre
}
/*
* Update node record's "conninfo" and "priority" fields. Called by repmgrd
* following a configuration file reload.
*/
bool
update_node_record_conn_priority(PGconn *conn, t_configuration_options *options)
{
PQExpBufferData query;
PGresult *res;
initPQExpBuffer(&query);
appendPQExpBuffer(
&query,
"UPDATE repmgr.nodes "
" SET conninfo = '%s', "
" priority = %d "
" WHERE id = %d ",
options->conninfo,
options->priority,
options->node_id);
res = PQexec(conn, query.data);
termPQExpBuffer(&query);
if (PQresultStatus(res) != PGRES_COMMAND_OK)
{
PQclear(res);
return false;
}
PQclear(res);
return true;
}
bool
delete_node_record(PGconn *conn, int node)
{