Copyright (C) Andrew Tridgell 2006
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#include "includes.h"
-#include "lib/tdb/include/tdb.h"
-#include "lib/events/events.h"
+#include "replace.h"
#include "system/network.h"
#include "system/filesys.h"
-#include "../include/ctdb_private.h"
+
+#include <talloc.h>
+#include <tevent.h>
+
+#include "lib/util/time.h"
+#include "lib/util/debug.h"
+
+#include "ctdb_private.h"
+
+#include "common/common.h"
+#include "common/logging.h"
+
#include "ctdb_tcp.h"
+static int tnode_destructor(struct ctdb_tcp_node *tnode)
+{
+ // struct ctdb_node *node = talloc_find_parent_bytype(tnode, struct ctdb_node);
+
+ if (tnode->fd != -1) {
+ close(tnode->fd);
+ tnode->fd = -1;
+ }
+
+ return 0;
+}
+
/*
- start the protocol going
+ initialise tcp portion of a ctdb node
*/
-int ctdb_tcp_start(struct ctdb_context *ctdb)
+static int ctdb_tcp_add_node(struct ctdb_node *node)
{
- int i;
+ struct ctdb_tcp_node *tnode;
+ tnode = talloc_zero(node, struct ctdb_tcp_node);
+ CTDB_NO_MEMORY(node->ctdb, tnode);
+
+ tnode->fd = -1;
+ node->private_data = tnode;
+ talloc_set_destructor(tnode, tnode_destructor);
+
+ tnode->out_queue = ctdb_queue_setup(node->ctdb, node, tnode->fd, CTDB_TCP_ALIGNMENT,
+ ctdb_tcp_tnode_cb, node, "to-node-%s", node->name);
+
+ return 0;
+}
+
+/*
+ initialise transport structures
+*/
+static int ctdb_tcp_initialise(struct ctdb_context *ctdb)
+{
+ unsigned int i;
/* listen on our own address */
- if (ctdb_tcp_listen(ctdb) != 0) return -1;
+ if (ctdb_tcp_listen(ctdb) != 0) {
+ DEBUG(DEBUG_CRIT, (__location__ " Failed to start listening on the CTDB socket\n"));
+ exit(1);
+ }
- /* startup connections to the other servers - will happen on
+ for (i=0; i < ctdb->num_nodes; i++) {
+ if (ctdb->nodes[i]->flags & NODE_FLAGS_DELETED) {
+ continue;
+ }
+ if (ctdb_tcp_add_node(ctdb->nodes[i]) != 0) {
+ DEBUG(DEBUG_CRIT, ("methods->add_node failed at %d\n", i));
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ start the protocol going
+*/
+static int ctdb_tcp_connect_node(struct ctdb_node *node)
+{
+ struct ctdb_context *ctdb = node->ctdb;
+ struct ctdb_tcp_node *tnode = talloc_get_type(
+ node->private_data, struct ctdb_tcp_node);
+
+ /* startup connection to the other server - will happen on
next event loop */
- for (i=0;i<ctdb->num_nodes;i++) {
- struct ctdb_node *node = *(ctdb->nodes + i);
- if (!(ctdb->flags & CTDB_FLAG_SELF_CONNECT) &&
- ctdb_same_address(&ctdb->address, &node->address)) continue;
- event_add_timed(ctdb->ev, node, timeval_zero(),
- ctdb_tcp_node_connect, node);
+ if (!ctdb_same_address(ctdb->address, &node->address)) {
+ tnode->connect_te = tevent_add_timer(ctdb->ev, tnode,
+ timeval_zero(),
+ ctdb_tcp_node_connect,
+ node);
}
return 0;
}
+/*
+ shutdown and try to restart a connection to a node after it has been
+ disconnected
+*/
+static void ctdb_tcp_restart(struct ctdb_node *node)
+{
+ struct ctdb_tcp_node *tnode = talloc_get_type(
+ node->private_data, struct ctdb_tcp_node);
+
+ DEBUG(DEBUG_NOTICE,("Tearing down connection to dead node :%d\n", node->pnn));
+
+ ctdb_tcp_stop_connection(node);
+
+ tnode->connect_te = tevent_add_timer(node->ctdb->ev, tnode,
+ timeval_zero(),
+ ctdb_tcp_node_connect, node);
+}
+
/*
- initialise tcp portion of a ctdb node
+ shutdown the transport
*/
-int ctdb_tcp_add_node(struct ctdb_node *node)
+static void ctdb_tcp_shutdown(struct ctdb_context *ctdb)
{
- struct ctdb_tcp_node *tnode;
- tnode = talloc_zero(node, struct ctdb_tcp_node);
- CTDB_NO_MEMORY(node->ctdb, tnode);
+ struct ctdb_tcp *ctcp = talloc_get_type(ctdb->private_data,
+ struct ctdb_tcp);
+ talloc_free(ctcp);
+ ctdb->private_data = NULL;
+}
+
+/*
+ start the transport
+*/
+static int ctdb_tcp_start(struct ctdb_context *ctdb)
+{
+ unsigned int i;
+
+ for (i=0; i < ctdb->num_nodes; i++) {
+ if (ctdb->nodes[i]->flags & NODE_FLAGS_DELETED) {
+ continue;
+ }
+ ctdb_tcp_connect_node(ctdb->nodes[i]);
+ }
- tnode->fd = -1;
- node->private = tnode;
return 0;
}
/*
transport packet allocator - allows transport to control memory for packets
*/
-void *ctdb_tcp_allocate_pkt(struct ctdb_context *ctdb, size_t size)
+static void *ctdb_tcp_allocate_pkt(TALLOC_CTX *mem_ctx, size_t size)
{
/* tcp transport needs to round to 8 byte alignment to ensure
that we can use a length header and 64 bit elements in
structures */
size = (size+(CTDB_TCP_ALIGNMENT-1)) & ~(CTDB_TCP_ALIGNMENT-1);
- return talloc_size(ctdb, size);
+ return talloc_size(mem_ctx, size);
}
static const struct ctdb_methods ctdb_tcp_methods = {
- .start = ctdb_tcp_start,
- .add_node = ctdb_tcp_add_node,
- .queue_pkt = ctdb_tcp_queue_pkt,
- .allocate_pkt = ctdb_tcp_allocate_pkt
+ .initialise = ctdb_tcp_initialise,
+ .start = ctdb_tcp_start,
+ .queue_pkt = ctdb_tcp_queue_pkt,
+ .add_node = ctdb_tcp_add_node,
+ .connect_node = ctdb_tcp_connect_node,
+ .allocate_pkt = ctdb_tcp_allocate_pkt,
+ .shutdown = ctdb_tcp_shutdown,
+ .restart = ctdb_tcp_restart,
};
+static int tcp_ctcp_destructor(struct ctdb_tcp *ctcp)
+{
+ ctcp->ctdb->private_data = NULL;
+ ctcp->ctdb->methods = NULL;
+
+ return 0;
+}
+
+
/*
initialise tcp portion of ctdb
*/
CTDB_NO_MEMORY(ctdb, ctcp);
ctcp->listen_fd = -1;
- ctdb->private = ctcp;
+ ctcp->ctdb = ctdb;
+ ctdb->private_data = ctcp;
ctdb->methods = &ctdb_tcp_methods;
+
+ talloc_set_destructor(ctcp, tcp_ctcp_destructor);
return 0;
}
git.samba.org / samba.git / blobdiff