2 ctdb_control protocol code to manage server ids
4 Copyright (C) Ronnie Sahlberg 2007
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #include "../include/ctdb_private.h"
21 #include "../common/rb_tree.h"
24 #define SERVER_ID_KEY_SIZE 3
25 static uint32_t *get_server_id_key(struct ctdb_server_id *server_id)
27 static uint32_t key[SERVER_ID_KEY_SIZE];
29 key[0] = server_id->type;
30 key[1] = server_id->vnn;
31 key[2] = server_id->server_id;
36 /* add a server_id to the tree.
37 if we had already 'data' in the tree then this is a duplicate and we can
38 just talloc_free the structure in parm and leave data in the tree.
39 othervise if this is a new node we return parm and that is inserted
42 static void *add_server_id_callback(void *parm, void *data)
53 a serverid that is registered with ctdb will be automatically unregistered
54 once the client domain socket dissappears.
56 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
60 struct ctdb_server_id *server_id;
61 struct ctdb_client *client = ctdb_reqid_find(ctdb, client_id, struct ctdb_client);
65 DEBUG(0,(__location__ " Could not find client parent structure. You can not send this control to a remote node\n"));
69 /* hang the server_id structure off client before storing it in the
70 tree so that is will be automatically destroyed when client
72 when the structure is free'd it will be automatically
75 server_id = talloc_memdup(client, indata.dptr, indata.dsize);
76 CTDB_NO_MEMORY(ctdb, server_id);
78 trbt_insertarray32_callback(ctdb->server_ids, SERVER_ID_KEY_SIZE,
79 get_server_id_key(server_id),
80 add_server_id_callback, server_id);
87 check whether a server id exists
89 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
92 struct ctdb_server_id *server_id = (struct ctdb_server_id *)indata.dptr;
94 return (int32_t)trbt_lookuparray32(ctdb->server_ids,
96 get_server_id_key(server_id));
100 unregisters a server id
102 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
105 struct ctdb_server_id *server_id = (struct ctdb_server_id *)indata.dptr;
107 talloc_free(trbt_lookuparray32(ctdb->server_ids,
109 get_server_id_key(server_id)));