/* Sync checkers activity with netlink kernel reflection */
void
update_checker_activity(uint32_t address, int enable)
{
checker *checker_obj;
element e;
/* Display netlink operation */
if (debug & 32)
log_message(LOG_INFO, "Netlink reflector reports IP %s %s",
inet_ntop2(address), (enable) ? "added" : "removed");
/* Processing Healthcheckers queue */
if (!LIST_ISEMPTY(checkers_queue))
for (e = LIST_HEAD(checkers_queue); e; ELEMENT_NEXT(e)) {
checker_obj = ELEMENT_DATA(e);
if (CHECKER_VIP(checker_obj) == address && CHECKER_HA_SUSPEND(checker_obj)) {
if (!CHECKER_ENABLED(checker_obj) && enable)
log_message(LOG_INFO,
"Activating healtchecker for service [%s:%d]",
inet_ntop2(CHECKER_RIP(checker_obj)),
ntohs(CHECKER_RPORT(checker_obj)));
if (CHECKER_ENABLED(checker_obj) && !enable)
log_message(LOG_INFO,
"Suspending healtchecker for service [%s:%d]",
inet_ntop2(CHECKER_RIP(checker_obj)),
ntohs(CHECKER_RPORT(checker_obj)));
checker_obj->enabled = enable;
}
}
}
int
tcp_connect_thread(thread_t * thread)
{
checker_t *checker = THREAD_ARG(thread);
tcp_checker_t *tcp_check = CHECKER_ARG(checker);
int fd;
int status;
/*
* Register a new checker thread & return
* if checker is disabled
*/
if (!CHECKER_ENABLED(checker)) {
thread_add_timer(thread->master, tcp_connect_thread, checker,
checker->vs->delay_loop);
return 0;
}
if ((fd = socket(tcp_check->dst.ss_family, SOCK_STREAM, IPPROTO_TCP)) == -1) {
DBG("TCP connect fail to create socket.");
return 0;
}
status = tcp_bind_connect(fd, &tcp_check->dst, &tcp_check->bindto);
if (status == connect_error) {
thread_add_timer(thread->master, tcp_connect_thread, checker,
checker->vs->delay_loop);
}
/* handle tcp connection status & register check worker thread */
tcp_connection_state(fd, status, thread, tcp_check_thread,
tcp_check->connection_to);
return 0;
}
/* Sync checkers activity with netlink kernel reflection */
void
update_checker_activity(sa_family_t family, void *address, int enable)
{
checker_t *checker;
sa_family_t vip_family;
element e;
char addr_str[INET6_ADDRSTRLEN];
void *addr;
/* Display netlink operation */
if (debug & 32) {
inet_ntop(family, address, addr_str, sizeof(addr_str));
log_message(LOG_INFO, "Netlink reflector reports IP %s %s"
, addr_str, (enable) ? "added" : "removed");
}
/* Processing Healthcheckers queue */
if (!LIST_ISEMPTY(checkers_queue)) {
for (e = LIST_HEAD(checkers_queue); e; ELEMENT_NEXT(e)) {
checker = ELEMENT_DATA(e);
vip_family = checker->vs->addr.ss_family;
if (vip_family != family)
continue;
if (family == AF_INET6) {
addr = (void *) &((struct sockaddr_in6 *)&checker->vs->addr)->sin6_addr;
} else {
addr = (void *) &((struct sockaddr_in *)&checker->vs->addr)->sin_addr;
}
if (inaddr_equal(family, addr, address) &&
CHECKER_HA_SUSPEND(checker)) {
if (!CHECKER_ENABLED(checker) && enable)
log_message(LOG_INFO, "Activating healthchecker for service [%s]:%d"
, inet_sockaddrtos(&checker->rs->addr)
, ntohs(inet_sockaddrport(&checker->rs->addr)));
if (CHECKER_ENABLED(checker) && !enable)
log_message(LOG_INFO, "Suspending healthchecker for service [%s]:%d"
, inet_sockaddrtos(&checker->rs->addr)
, ntohs(inet_sockaddrport(&checker->rs->addr)));
checker->enabled = enable;
}
}
}
}
int
misc_check_thread(thread * thread_obj)
{
checker *checker_obj;
misc_checker *misc_chk;
int status, ret;
pid_t pid;
checker_obj = THREAD_ARG(thread_obj);
misc_chk = CHECKER_ARG(checker_obj);
/*
* Register a new checker thread & return
* if checker is disabled
*/
if (!CHECKER_ENABLED(checker_obj)) {
/* Register next timer checker */
thread_add_timer(thread_obj->master, misc_check_thread, checker_obj,
checker_obj->vs->delay_loop);
return 0;
}
/* Register next timer checker */
thread_add_timer(thread_obj->master, misc_check_thread, checker_obj,
checker_obj->vs->delay_loop);
/* Daemonization to not degrade our scheduling timer */
pid = fork();
/* In case of fork is error. */
if (pid < 0) {
log_message(LOG_INFO, "Failed fork process");
return -1;
}
/* In case of this is parent process */
if (pid) {
long timeout;
timeout = (misc_chk->timeout) ? misc_chk->timeout : checker_obj->vs->delay_loop;
thread_add_child(thread_obj->master, misc_check_child_thread,
checker_obj, pid, timeout);
return 0;
}
/* Child part */
signal_handler_destroy();
closeall(0);
open("/dev/null", O_RDWR);
ret = dup(0);
ret = dup(0);
status = system_call(misc_chk->path);
if (status < 0 || !WIFEXITED(status))
status = 0; /* Script errors aren't server errors */
else
status = WEXITSTATUS(status);
exit(status);
}
