static void
s_alerts (
zsock_t *pipe,
void *args) {
const char *name = "ALERT";
mlm_client_t *cl = mlm_client_new ();
mlm_client_connect (cl, endpoint, 5000, __PRETTY_FUNCTION__);
mlm_client_set_producer (cl, stream);
zsock_t *msgpipe = mlm_client_msgpipe (cl);
zpoller_t *poller = zpoller_new (pipe, msgpipe, NULL);
char *alert_state = strdup ("NEW");
zsock_signal (pipe, 0);
while (!zsys_interrupted) {
zsock_t *which = zpoller_wait (poller, 1000);
if (!which) {
mlm_client_sendx (cl, "alert://upsonbattery@ups1", alert_state, NULL);
continue;
}
if (which == pipe)
break;
//which == msgpipe
zmsg_t *msg = mlm_client_recv (cl);
if (!streq (mlm_client_command (cl), "MAILBOX DELIVER"))
goto msg_destroy;
char *alert_name = zmsg_popstr (msg);
zstr_free (&alert_state);
alert_state = zmsg_popstr (msg);
zsys_info ("%s: Alert '%s' new state is '%s'", name, alert_name, alert_state);
zstr_free (&alert_name);
msg_destroy:
zmsg_destroy (&msg);
}
zstr_free (&alert_state);
zpoller_destroy (&poller);
mlm_client_destroy (&cl);
}
int main(int argc, char **argv)
{
if(argc != 2) {
fprintf(stderr, "Usage: %s address\n", argv[0]);
exit(1);
}
char *addr = argv[1];
mlm_client_t *agent = mlm_client_new ();
// mlm_client_connect () returns -1 on failure
if ( mlm_client_connect (agent, addr, 1000, "UI") == -1 ) {
zsys_error ("Cannot connect to the endpoint %s", addr);
mlm_client_destroy (&agent);
return EXIT_FAILURE;
}
zmsg_t *getmsg = zmsg_new();
zmsg_addstr(getmsg, "GET");
zmsg_addstr(getmsg, "temperature");
// mlm_client_sendfor () returns zero on success
if (mlm_client_sendfor (agent, "stats", "temperature", NULL, 0, &getmsg) !=0 ) {
zsys_error ("Cannot send the message");
mlm_client_destroy (&agent);
return 1;
}
getmsg = zmsg_new();
zmsg_addstr(getmsg, "GET");
zmsg_addstr(getmsg, "ups.state");
if (mlm_client_sendfor (agent, "stats", "ups.state", NULL, 0, &getmsg) != 0) {
zsys_error ("Cannot send the message");
mlm_client_destroy (&agent);
return 1;
}
getmsg = zmsg_new();
zmsg_addstr(getmsg, "GET");
zmsg_addstr(getmsg, "ups.power");
if (mlm_client_sendfor (agent, "stats", "ups.power", NULL, 0, &getmsg) != 0) {
zsys_error ("Cannot send the message");
mlm_client_destroy (&agent);
return 1;
}
// need to read replies, waiying for 3 of them
int i = 0;
while ( !zsys_interrupted && i < 3 )
{
zsys_info ("waiting for %d reply message", i);
zmsg_t *msg = mlm_client_recv (agent);
if ( msg == NULL )
continue;
if ( streq (mlm_client_command (agent), "MAILBOX DELIVER") )
{
if ( ( strcmp(mlm_client_subject(agent), "temperature") == 0 ) ||
( strcmp(mlm_client_subject(agent), "ups.power") == 0 ) ||
( strcmp(mlm_client_subject(agent), "ups.temperature") == 0 ) )
{
char *key = zmsg_popstr (msg);
char *result = zmsg_popstr (msg);
zsys_info ("GOT: %s = %s", key , result);
i++;
}
}
zmsg_destroy (&msg);
}
mlm_client_destroy (&agent);
return 0;
}
int main (int argc, char **argv) {
unsigned int count = 0;
parse_args(argc, argv);
if (!endpoint || !name) {
zsys_error("endpoint or name not specified.");
usage();
}
mlm_client_t *client = mlm_client_new ();
assert(client);
int rv;
rv = mlm_client_connect(client, endpoint, 5000, name);
if (rv == -1) {
zsys_error("connection failed.");
mlm_client_destroy (&client);
return -1;
}
rv = mlm_client_set_producer (client, "stream");
if (rv == -1) {
zsys_error("set_producer failed.");
mlm_client_destroy (&client);
return -2;
}
zsock_t *pipe = mlm_client_msgpipe (client);
if (!pipe) {
zsys_error ("mlm_client_msgpipe() failed.");
mlm_client_destroy (&client);
return -3;
}
zpoller_t *poller = zpoller_new (pipe, NULL);
if (!poller) {
zsys_error("zpoller_new() failed.");
mlm_client_destroy (&client);
return -4;
}
while ( !zsys_interrupted && ( !num_messages || count < num_messages) ) {
zsock_t *which = zpoller_wait (poller, interval);
if ( which != NULL ) {
// so we have something to receive
zmsg_t *recv_msg = mlm_client_recv (client);
zmsg_destroy (&recv_msg);
}
// in any case we are going to send something
// zclock_sleep(interval);
zmsg_t *msg = zmsg_new();
assert (msg);
if ( count % 10 == 0) {
zmsg_pushstr (msg, "exit");
} else {
zmsg_pushstr (msg, "hello");
}
zmsg_print(msg);
mlm_client_send (client, "testing message", &msg);
zmsg_destroy (&msg);
++count;
}
mlm_client_destroy(&client);
zpoller_destroy(&poller);
free(endpoint);
free(name);
zsys_info ("finished, sent: %u.", count);
return 0;
}