/* 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;
}
}
}
/* dump checker data */
static void
dump_checker(void *data_obj)
{
checker *checker_obj = data_obj;
log_message(LOG_INFO, " %s:%d", inet_ntop2(CHECKER_RIP(checker_obj))
, ntohs(CHECKER_RPORT(checker_obj)));
(*checker_obj->dump_func) (checker_obj);
}
/* register checkers to the global I/O scheduler */
void
register_checkers_thread(void)
{
checker *checker_obj;
element e;
for (e = LIST_HEAD(checkers_queue); e; ELEMENT_NEXT(e)) {
checker_obj = ELEMENT_DATA(e);
log_message(LOG_INFO,
"Activating healtchecker for service [%s:%d]",
inet_ntop2(CHECKER_RIP(checker_obj)),
ntohs(CHECKER_RPORT(checker_obj)));
CHECKER_ENABLE(checker_obj);
if (checker_obj->launch)
thread_add_timer(master, checker_obj->launch, checker_obj,
BOOTSTRAP_DELAY);
}
}
int
misc_check_child_thread(thread * thread_obj)
{
int wait_status;
checker *checker_obj;
misc_checker *misc_chk;
checker_obj = THREAD_ARG(thread_obj);
misc_chk = CHECKER_ARG(checker_obj);
if (thread_obj->type == THREAD_CHILD_TIMEOUT) {
pid_t pid;
pid = THREAD_CHILD_PID(thread_obj);
/* The child hasn't responded. Kill it off. */
if (svr_checker_up(checker_obj->id, checker_obj->rs)) {
log_message(LOG_INFO, "Misc check to [%s] for [%s] timed out",
inet_ntop2(CHECKER_RIP(checker_obj)),
misc_chk->path);
smtp_alert(checker_obj->rs, NULL, NULL,
"DOWN",
"=> MISC CHECK script timeout on service <=");
update_svr_checker_state(DOWN, checker_obj->id
, checker_obj->vs
, checker_obj->rs);
}
kill(pid, SIGTERM);
thread_add_child(thread_obj->master, misc_check_child_timeout_thread,
checker_obj, pid, 2);
return 0;
}
wait_status = THREAD_CHILD_STATUS(thread_obj);
if (WIFEXITED(wait_status)) {
int status;
status = WEXITSTATUS(wait_status);
if (status == 0 ||
(misc_chk->dynamic == 1 && status >= 2 && status <= 255)) {
/*
* The actual weight set when using misc_dynamic is two less than
* the exit status returned. Effective range is 0..253.
* Catch legacy case of status being 0 but misc_dynamic being set.
*/
if (misc_chk->dynamic == 1 && status != 0)
update_svr_wgt(status - 2, checker_obj->vs, checker_obj->rs);
/* everything is good */
if (!svr_checker_up(checker_obj->id, checker_obj->rs)) {
log_message(LOG_INFO, "Misc check to [%s] for [%s] success.",
inet_ntop2(CHECKER_RIP(checker_obj)),
misc_chk->path);
smtp_alert(checker_obj->rs, NULL, NULL,
"UP",
"=> MISC CHECK succeed on service <=");
update_svr_checker_state(UP, checker_obj->id
, checker_obj->vs
, checker_obj->rs);
}
} else {
if (svr_checker_up(checker_obj->id, checker_obj->rs)) {
log_message(LOG_INFO, "Misc check to [%s] for [%s] failed.",
inet_ntop2(CHECKER_RIP(checker_obj)),
misc_chk->path);
smtp_alert(checker_obj->rs, NULL, NULL,
"DOWN",
"=> MISC CHECK failed on service <=");
update_svr_checker_state(DOWN, checker_obj->id
, checker_obj->vs
, checker_obj->rs);
}
}
}
return 0;
}
