static void
failover_periodic_cb(void *context_)
{
struct failover_context *context = context_;
char *curr_peer = NULL;
char *prev_peer = NULL;
if (rconn_is_connected(context->remote_rconn))
return;
if (!is_timed_out(context->peers[context->index],
context->settings->max_backoff)) {
return;
}
rconn_disconnect(context->remote_rconn);
prev_peer = (char *)context->settings->controller_names[context->index];
context->index = (context->index + 1)
% context->settings->num_controllers;
curr_peer = (char *)context->settings->controller_names[context->index];
rconn_connect(context->remote_rconn,
context->settings->controller_names[context->index]);
context->peers[context->index]->epoch = time_now();
VLOG_INFO("Switching over to %s, from %s", curr_peer, prev_peer);
}
/* Creates a new rconn, connects it (reliably) to 'name', and returns it. */
struct rconn *
rconn_new(const char *name, int inactivity_probe_interval, int max_backoff)
{
struct rconn *rc = rconn_create(inactivity_probe_interval, max_backoff);
rconn_connect(rc, name);
return rc;
}
int
main(int argc, char *argv[])
{
struct rconn *rconn;
int error;
set_program_name(argv[0]);
register_fault_handlers();
time_init();
vlog_init();
parse_options(argc, argv);
signal(SIGPIPE, SIG_IGN);
if (argc - optind != 1) {
ofp_fatal(0, "missing controller argument; use --help for usage");
}
rconn = rconn_create(60, max_backoff);
error = rconn_connect(rconn, argv[optind]);
if (error == EAFNOSUPPORT) {
ofp_fatal(0, "no support for %s vconn", argv[optind]);
}
error = dp_new(&dp, dpid, rconn);
if (listen_pvconn_name) {
struct pvconn *listen_pvconn;
int retval;
retval = pvconn_open(listen_pvconn_name, &listen_pvconn);
if (retval && retval != EAGAIN) {
ofp_fatal(retval, "opening %s", listen_pvconn_name);
}
dp_add_listen_pvconn(dp, listen_pvconn);
}
if (error) {
ofp_fatal(error, "could not create datapath");
}
if (port_list) {
add_ports(dp, port_list);
}
die_if_already_running();
daemonize();
error = vlog_server_listen(NULL, NULL);
if (error) {
ofp_fatal(error, "could not listen for vlog connections");
}
for (;;) {
dp_run(dp);
dp_wait(dp);
poll_block();
}
return 0;
}