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 "system/network.h"
22 #include "system/filesys.h"
27 #include "lib/util/time.h"
28 #include "lib/util/debug.h"
30 #include "ctdb_private.h"
32 #include "common/common.h"
33 #include "common/logging.h"
37 static int tnode_destructor(struct ctdb_tcp_node
*tnode
)
39 // struct ctdb_node *node = talloc_find_parent_bytype(tnode, struct ctdb_node);
41 if (tnode
->out_fd
!= -1) {
50 initialise tcp portion of a ctdb node
52 static int ctdb_tcp_add_node(struct ctdb_node
*node
)
54 struct ctdb_tcp_node
*tnode
;
55 tnode
= talloc_zero(node
, struct ctdb_tcp_node
);
56 CTDB_NO_MEMORY(node
->ctdb
, tnode
);
59 tnode
->ctdb
= node
->ctdb
;
61 node
->private_data
= tnode
;
62 talloc_set_destructor(tnode
, tnode_destructor
);
68 initialise transport structures
70 static int ctdb_tcp_initialise(struct ctdb_context
*ctdb
)
74 /* listen on our own address */
75 if (ctdb_tcp_listen(ctdb
) != 0) {
76 DEBUG(DEBUG_CRIT
, (__location__
" Failed to start listening on the CTDB socket\n"));
80 for (i
=0; i
< ctdb
->num_nodes
; i
++) {
81 if (ctdb
->nodes
[i
]->flags
& NODE_FLAGS_DELETED
) {
84 if (ctdb_tcp_add_node(ctdb
->nodes
[i
]) != 0) {
85 DEBUG(DEBUG_CRIT
, ("methods->add_node failed at %d\n", i
));
94 start the protocol going
96 static int ctdb_tcp_connect_node(struct ctdb_node
*node
)
98 struct ctdb_context
*ctdb
= node
->ctdb
;
99 struct ctdb_tcp_node
*tnode
= talloc_get_type(
100 node
->private_data
, struct ctdb_tcp_node
);
102 /* startup connection to the other server - will happen on
104 if (!ctdb_same_address(ctdb
->address
, &node
->address
)) {
105 tnode
->connect_te
= tevent_add_timer(ctdb
->ev
, tnode
,
107 ctdb_tcp_node_connect
,
115 shutdown and try to restart a connection to a node after it has been
118 static void ctdb_tcp_restart(struct ctdb_node
*node
)
120 struct ctdb_tcp_node
*tnode
= talloc_get_type(
121 node
->private_data
, struct ctdb_tcp_node
);
123 DEBUG(DEBUG_NOTICE
,("Tearing down connection to dead node :%d\n", node
->pnn
));
125 ctdb_tcp_stop_connection(node
);
127 tnode
->connect_te
= tevent_add_timer(node
->ctdb
->ev
, tnode
,
129 ctdb_tcp_node_connect
, node
);
134 shutdown the transport
136 static void ctdb_tcp_shutdown(struct ctdb_context
*ctdb
)
138 struct ctdb_tcp
*ctcp
= talloc_get_type(ctdb
->private_data
,
141 ctdb
->private_data
= NULL
;
147 static int ctdb_tcp_start(struct ctdb_context
*ctdb
)
151 for (i
=0; i
< ctdb
->num_nodes
; i
++) {
152 if (ctdb
->nodes
[i
]->flags
& NODE_FLAGS_DELETED
) {
155 ctdb_tcp_connect_node(ctdb
->nodes
[i
]);
163 transport packet allocator - allows transport to control memory for packets
165 static void *ctdb_tcp_allocate_pkt(TALLOC_CTX
*mem_ctx
, size_t size
)
167 /* tcp transport needs to round to 8 byte alignment to ensure
168 that we can use a length header and 64 bit elements in
170 size
= (size
+(CTDB_TCP_ALIGNMENT
-1)) & ~(CTDB_TCP_ALIGNMENT
-1);
171 return talloc_size(mem_ctx
, size
);
175 static const struct ctdb_methods ctdb_tcp_methods
= {
176 .initialise
= ctdb_tcp_initialise
,
177 .start
= ctdb_tcp_start
,
178 .queue_pkt
= ctdb_tcp_queue_pkt
,
179 .add_node
= ctdb_tcp_add_node
,
180 .connect_node
= ctdb_tcp_connect_node
,
181 .allocate_pkt
= ctdb_tcp_allocate_pkt
,
182 .shutdown
= ctdb_tcp_shutdown
,
183 .restart
= ctdb_tcp_restart
,
186 static int tcp_ctcp_destructor(struct ctdb_tcp
*ctcp
)
188 ctcp
->ctdb
->private_data
= NULL
;
189 ctcp
->ctdb
->methods
= NULL
;
196 initialise tcp portion of ctdb
198 int ctdb_tcp_init(struct ctdb_context
*ctdb
)
200 struct ctdb_tcp
*ctcp
;
201 ctcp
= talloc_zero(ctdb
, struct ctdb_tcp
);
202 CTDB_NO_MEMORY(ctdb
, ctcp
);
204 ctcp
->listen_fd
= -1;
206 ctdb
->private_data
= ctcp
;
207 ctdb
->methods
= &ctdb_tcp_methods
;
209 talloc_set_destructor(ctcp
, tcp_ctcp_destructor
);