int main (int argc, char **argv)
{
int opt;
char *configfile = "hosts";
JRB hosts, node, node2;
Host *host, *join, *me;
int nhosts;
int i, j;
Message *m;
char dest[160];
char msg[256];
Key tmp;
ChimeraHost ch;
double start;
while ((opt = getopt (argc, argv, OPTSTR)) != EOF)
{
switch ((char) opt)
{
case 'f':
configfile = optarg;
break;
default:
fprintf (stderr, "invalid option %c\n", (char) opt);
fprintf (stderr, "usage: %s\n", USAGE);
exit (1);
}
}
sem = sema_create (0);
state = (ChimeraState *) malloc (sizeof (ChimeraState));
me = (Host *) malloc (sizeof (Host));
me->name = "localhost";
me->port = 11110;
me->hnp = "localhost:11110";
hosts = read_hosts (configfile, &nhosts);
state->log = log_init ();
log_direct (state->log, LOG_ERROR, stderr);
log_direct (state->log, LOG_WARN, stderr);
key_init ();
state->message = message_init (state, 11110);
message_handler (state, 21, hello, 1);
message_handler (state, 22, fwd, 1);
message_handler (state, 23, del, 1);
message_handler (state, 24, NULL, 1);
srand (time (NULL));
/* This part runs bighost in different hosts */
announced = 0;
jrb_traverse (node, hosts)
{
if (announced == 0)
{
join = NULL;
}
else
{
i = (rand () % announced) + 1;
jrb_traverse (node2, hosts)
{
i--;
if (i == 0)
break;
}
join = (Host *) node2->val.v;
}
host = (Host *) node->val.v;
start_host (host, join);
dsleep (0.1);
}
//-----------------------------------------------------------------------------
// When the SIGINT signal is received, we need to start shutting down the
// service. This means that it needs to:
// 1. Close the listening socket.
// 2. Send a CLOSING message to every connected node.
// 3. if there are any undelivered messages in the queues, we need to return them.
// 4. Shutdown the nodes if we can.
// 5. Shutdown the queues if we can.
// 6. Tell the stats system to close its event as soon as there are no more nodes connected.
void sigint_handler(evutil_socket_t fd, short what, void *arg)
{
system_data_t *sysdata = (system_data_t *) arg;
server_t *server;
stats_t *stats;
queue_t *q;
node_t *node;
controller_t *ct;
logger(sysdata->logging, 3, "SIGINT");
assert(sysdata);
assert(sysdata->servers);
// delete the sigint event, we dont need it anymore.
assert(sysdata->sigint_event);
event_free(sysdata->sigint_event);
sysdata->sigint_event = NULL;
// delete the sighup event, we dont need that either.
assert(sysdata->sighup_event);
event_free(sysdata->sighup_event);
sysdata->sighup_event = NULL;
// delete the sigusr1 event, we dont need that either.
assert(sysdata->sigusr1_event);
event_free(sysdata->sigusr1_event);
sysdata->sigusr1_event = NULL;
// delete the sigusr2 event, we dont need that either.
assert(sysdata->sigusr2_event);
event_free(sysdata->sigusr2_event);
sysdata->sigusr2_event = NULL;
logger(sysdata->logging, 2, "Shutting down servers.");
while ((server = ll_pop_head(sysdata->servers))) {
server_shutdown(server);
server_free(server);
free(server);
}
// All active nodes should be informed that we are shutting down.
logger(sysdata->logging, 2, "Shutting down nodes.");
assert(sysdata->nodelist);
ll_start(sysdata->nodelist);
while ((node = ll_next(sysdata->nodelist))) {
assert(node->handle > 0);
logger(sysdata->logging, 2, "Initiating shutdown of node %d.", node->handle);
node_shutdown(node);
}
ll_finish(sysdata->nodelist);
// Now attempt to shutdown all the queues. Basically, this just means that the queue will close down all the 'waiting' consumers.
logger(sysdata->logging, 2, "Initiating shutdown of queues.");
ll_start(sysdata->queues);
while ((q = ll_next(sysdata->queues))) {
assert(q->name != NULL);
assert(q->qid > 0);
logger(sysdata->logging, 2, "Initiating shutdown of queue %d ('%s').", q->qid, q->name);
queue_shutdown(q);
}
ll_finish(sysdata->queues);
// if we have controllers that are attempting to connect, we need to change their status so that they dont.
logger(sysdata->logging, 2, "Stopping controllers that are connecting.");
ll_start(sysdata->controllers);
while ((ct = ll_next(sysdata->controllers))) {
BIT_SET(ct->flags, FLAG_CONTROLLER_FAILED);
if (ct->connect_event) {
event_free(ct->connect_event);
ct->connect_event = NULL;
}
}
ll_finish(sysdata->controllers);
// Put stats event on notice that we are shutting down, so that as soon as there are no more nodes, it needs to stop its event.
assert(sysdata != NULL);
assert(sysdata->stats != NULL);
stats = sysdata->stats;
assert(stats->shutdown == 0);
stats->shutdown ++;
// Tell the logging system not to use events anymore.
log_direct(sysdata->logging);
}