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Initial support for physical replication slots

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Todo:
 - if slots specified in repmgr.conf, verify server version
 - store generated slot name in `repl_nodes` table
This commit is contained in:
Ian Barwick
2015-02-02 15:53:53 +09:00
parent 01360c3d39
commit 2ece014952
6 changed files with 106 additions and 13 deletions
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28
dbutils.c
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@@ -558,6 +558,7 @@ get_master_connection(PGconn *standby_conn, char *cluster,
{
PQclear(res2);
PQclear(res1);
log_debug(_("get_master_connection(): current primary node is %i\n"), node_id);
if(master_id != NULL)
{
@@ -709,3 +710,30 @@ get_repmgr_schema_quoted(PGconn *conn)
return repmgr_schema_quoted;
}
bool
create_replication_slot(PGconn *conn, char *slot_name)
{
char sqlquery[QUERY_STR_LEN];
PGresult *res;
sqlquery_snprintf(sqlquery,
"SELECT * FROM pg_create_physical_replication_slot('%s')",
slot_name);
log_debug(_("create_replication_slot(): Creating slot '%s' on primary\n"), slot_name);
res = PQexec(conn, sqlquery);
if (!res || PQresultStatus(res) != PGRES_TUPLES_OK)
{
log_err(_("Unable to create slot '%s' on the primary node: %s\n"),
slot_name,
PQerrorMessage(conn));
PQclear(res);
return false;
}
PQclear(res);
return true;
}