4 Copyright (C) Andrew Tridgell 2006
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/>.
21 #include "lib/tdb/include/tdb.h"
22 #include "lib/tevent/tevent.h"
23 #include "system/network.h"
24 #include "system/filesys.h"
25 #include "../include/ctdb_private.h"
28 static int tnode_destructor(struct ctdb_tcp_node *tnode)
30 // struct ctdb_node *node = talloc_find_parent_bytype(tnode, struct ctdb_node);
32 if (tnode->fd != -1) {
41 initialise tcp portion of a ctdb node
43 static int ctdb_tcp_add_node(struct ctdb_node *node)
45 struct ctdb_tcp_node *tnode;
46 tnode = talloc_zero(node, struct ctdb_tcp_node);
47 CTDB_NO_MEMORY(node->ctdb, tnode);
50 node->private_data = tnode;
51 talloc_set_destructor(tnode, tnode_destructor);
53 tnode->out_queue = ctdb_queue_setup(node->ctdb, node, tnode->fd, CTDB_TCP_ALIGNMENT,
54 ctdb_tcp_tnode_cb, node, "to-node-%s", node->name);
60 initialise transport structures
62 static int ctdb_tcp_initialise(struct ctdb_context *ctdb)
66 /* listen on our own address */
67 if (ctdb_tcp_listen(ctdb) != 0) {
68 DEBUG(DEBUG_CRIT, (__location__ " Failed to start listening on the CTDB socket\n"));
72 for (i=0; i < ctdb->num_nodes; i++) {
73 if (ctdb->nodes[i]->flags & NODE_FLAGS_DELETED) {
76 if (ctdb_tcp_add_node(ctdb->nodes[i]) != 0) {
77 DEBUG(DEBUG_CRIT, ("methods->add_node failed at %d\n", i));
86 start the protocol going
88 static int ctdb_tcp_connect_node(struct ctdb_node *node)
90 struct ctdb_context *ctdb = node->ctdb;
91 struct ctdb_tcp_node *tnode = talloc_get_type(
92 node->private_data, struct ctdb_tcp_node);
94 /* startup connection to the other server - will happen on
96 if (!ctdb_same_address(&ctdb->address, &node->address)) {
97 tnode->connect_te = event_add_timed(ctdb->ev, tnode,
99 ctdb_tcp_node_connect, node);
106 shutdown and try to restart a connection to a node after it has been
109 static void ctdb_tcp_restart(struct ctdb_node *node)
111 struct ctdb_tcp_node *tnode = talloc_get_type(
112 node->private_data, struct ctdb_tcp_node);
114 DEBUG(DEBUG_NOTICE,("Tearing down connection to dead node :%d\n", node->pnn));
116 ctdb_tcp_stop_connection(node);
118 tnode->connect_te = event_add_timed(node->ctdb->ev, tnode, timeval_zero(),
119 ctdb_tcp_node_connect, node);
124 shutdown the transport
126 static void ctdb_tcp_shutdown(struct ctdb_context *ctdb)
128 struct ctdb_tcp *ctcp = talloc_get_type(ctdb->private_data,
131 ctdb->private_data = NULL;
137 static int ctdb_tcp_start(struct ctdb_context *ctdb)
141 for (i=0; i < ctdb->num_nodes; i++) {
142 if (ctdb->nodes[i]->flags & NODE_FLAGS_DELETED) {
145 ctdb_tcp_connect_node(ctdb->nodes[i]);
153 transport packet allocator - allows transport to control memory for packets
155 static void *ctdb_tcp_allocate_pkt(TALLOC_CTX *mem_ctx, size_t size)
157 /* tcp transport needs to round to 8 byte alignment to ensure
158 that we can use a length header and 64 bit elements in
160 size = (size+(CTDB_TCP_ALIGNMENT-1)) & ~(CTDB_TCP_ALIGNMENT-1);
161 return talloc_size(mem_ctx, size);
165 static const struct ctdb_methods ctdb_tcp_methods = {
166 .initialise = ctdb_tcp_initialise,
167 .start = ctdb_tcp_start,
168 .queue_pkt = ctdb_tcp_queue_pkt,
169 .add_node = ctdb_tcp_add_node,
170 .connect_node = ctdb_tcp_connect_node,
171 .allocate_pkt = ctdb_tcp_allocate_pkt,
172 .shutdown = ctdb_tcp_shutdown,
173 .restart = ctdb_tcp_restart,
176 static int tcp_ctcp_destructor(struct ctdb_tcp *ctcp)
178 ctcp->ctdb->private_data = NULL;
179 ctcp->ctdb->methods = NULL;
186 initialise tcp portion of ctdb
188 int ctdb_tcp_init(struct ctdb_context *ctdb)
190 struct ctdb_tcp *ctcp;
191 ctcp = talloc_zero(ctdb, struct ctdb_tcp);
192 CTDB_NO_MEMORY(ctdb, ctcp);
194 ctcp->listen_fd = -1;
196 ctdb->private_data = ctcp;
197 ctdb->methods = &ctdb_tcp_methods;
199 talloc_set_destructor(ctcp, tcp_ctcp_destructor);