int nagios() {
struct uwsgi_header uh;
char *buf = NULL;
if (!use_nagios) {
return 1;
}
if (!uwsgi.sockets) {
fprintf(stdout, "UWSGI UNKNOWN: you have specified an invalid socket\n");
exit(3);
}
int fd = uwsgi_connect(uwsgi.sockets->name, uwsgi.socket_timeout, 0);
if (fd < 0) {
fprintf(stdout, "UWSGI CRITICAL: could not connect() to workers %s\n", strerror(errno));
if (errno == EPERM || errno == EACCES) {
exit(3);
}
exit(2);
}
uh.modifier1 = UWSGI_MODIFIER_PING;
uh.pktsize = 0;
uh.modifier2 = 0;
if (write(fd, &uh, 4) != 4) {
uwsgi_error("write()");
fprintf(stdout, "UWSGI CRITICAL: could not send ping packet to workers\n");
exit(2);
}
int ret = uwsgi_read_response(fd, &uh, uwsgi.socket_timeout, &buf);
if (ret == -2) {
fprintf(stdout, "UWSGI CRITICAL: timed out waiting for response\n");
exit(2);
}
else if (ret == -1) {
fprintf(stdout, "UWSGI CRITICAL: error reading response\n");
exit(2);
}
else {
if (uh.pktsize > 0 && buf) {
fprintf(stdout, "UWSGI WARNING: %.*s\n", uh.pktsize, buf);
exit(1);
}
else {
fprintf(stdout, "UWSGI OK: armed and ready\n");
exit(0);
}
}
// never here
fprintf(stdout, "UWSGI UNKNOWN: probably you hit a bug of uWSGI !!!\n");
exit(3);
}
static void ping() {
struct uwsgi_header uh;
char *buf = NULL;
// use a 3 secs timeout by default
if (!uping.ping_timeout) uping.ping_timeout = 3;
uwsgi_log("PING uwsgi host %s (timeout: %d)\n", uping.ping, uping.ping_timeout);
int fd = uwsgi_connect(uping.ping, uping.ping_timeout, 0);
if (fd < 0) {
exit(1);
}
uh.modifier1 = UWSGI_MODIFIER_PING;
uh.pktsize = 0;
uh.modifier2 = 0;
if (write(fd, &uh, 4) != 4) {
uwsgi_error("write()");
exit(2);
}
int ret = uwsgi_read_response(fd, &uh, uping.ping_timeout, &buf);
if (ret < 0) {
exit(1);
}
else {
if (uh.pktsize > 0) {
uwsgi_log("[WARNING] node %s message: %.*s\n", uping.ping, uh.pktsize, buf);
exit(2);
}
else {
exit(0);
}
}
}
int uwsgi_remote_signal_send(char *addr, uint8_t sig) {
struct uwsgi_header uh;
uh.modifier1 = 110;
uh.pktsize = 0;
uh.modifier2 = sig;
int fd = uwsgi_connect(addr, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT], 0);
if (fd < 0) return -1;
if (write(fd, (char *) &uh, 4) != 4) {
uwsgi_error("uwsgi_remote_signal_send()");
close(fd);
return -1;
}
int ret = uwsgi_read_response(fd, &uh, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT], NULL);
close(fd);
return ret;
}