/**
* Schedules us to be notified with the given state within a particular amount
* of time. This is used both for the timeout and for the interval
*/
void
lcbdur_switch_state(lcb_DURSET *dset, unsigned int state)
{
lcb_U32 delay = 0;
lcbio_TABLE* io = dset->instance->iotable;
hrtime_t now = gethrtime();
if (state == LCBDUR_STATE_TIMEOUT) {
if (dset->ns_timeout && now < dset->ns_timeout) {
delay = LCB_NS2US(dset->ns_timeout - now);
} else {
delay = 0;
}
} else if (state == LCBDUR_STATE_OBSPOLL) {
if (now + LCB_US2NS(DSET_OPTFLD(dset, interval)) < dset->ns_timeout) {
delay = DSET_OPTFLD(dset, interval);
} else {
delay = 0;
state = LCBDUR_STATE_TIMEOUT;
}
} else if (state == LCBDUR_STATE_INIT) {
delay = 0;
}
dset->next_state = state;
io->timer.cancel(io->p, dset->timer);
io->timer.schedule(io->p, dset->timer, delay, dset, timer_callback);
}
lcb_error_t
lcb_bootstrap_common(lcb_t instance, int options)
{
struct lcb_BOOTSTRAP *bs = instance->bootstrap;
hrtime_t now = gethrtime();
if (!bs) {
bs = calloc(1, sizeof(*instance->bootstrap));
if (!bs) {
return LCB_CLIENT_ENOMEM;
}
bs->tm = lcbio_timer_new(instance->iotable, bs, initial_timeout);
instance->bootstrap = bs;
bs->parent = instance;
lcb_confmon_add_listener(instance->confmon, &bs->listener);
}
if (lcb_confmon_is_refreshing(instance->confmon)) {
return LCB_SUCCESS;
}
if (options & LCB_BS_REFRESH_THROTTLE) {
/* Refresh throttle requested. This is not true if options == ALWAYS */
hrtime_t next_ts;
unsigned errthresh = LCBT_SETTING(instance, weird_things_threshold);
if (options & LCB_BS_REFRESH_INCRERR) {
bs->errcounter++;
}
next_ts = bs->last_refresh;
next_ts += LCB_US2NS(LCBT_SETTING(instance, weird_things_delay));
if (now < next_ts && bs->errcounter < errthresh) {
lcb_log(LOGARGS(instance, INFO),
"Not requesting a config refresh because of throttling parameters. Next refresh possible in %ums or %u errors. "
"See LCB_CNTL_CONFDELAY_THRESH and LCB_CNTL_CONFERRTHRESH to modify the throttling settings",
LCB_NS2US(next_ts-now)/1000, (unsigned)errthresh-bs->errcounter);
return LCB_SUCCESS;
}
}
if (options == LCB_BS_REFRESH_INITIAL) {
lcb_confmon_prepare(instance->confmon);
bs->listener.callback = config_callback;
lcbio_timer_set_target(bs->tm, initial_timeout);
lcbio_timer_rearm(bs->tm, LCBT_SETTING(instance, config_timeout));
lcb_aspend_add(&instance->pendops, LCB_PENDTYPE_COUNTER, NULL);
} else {
/** No initial timer */
bs->listener.callback = async_step_callback;
}
/* Reset the counters */
bs->errcounter = 0;
if (options != LCB_BS_REFRESH_INITIAL) {
bs->last_refresh = now;
}
return lcb_confmon_start(instance->confmon);
}
void lcb_bootstrap_errcount_incr(lcb_t instance)
{
int should_refresh = 0;
hrtime_t now = gethrtime();
instance->weird_things++;
if (now - instance->bootstrap->last_refresh >
LCB_US2NS(instance->settings.weird_things_delay)) {
lcb_log(LOGARGS(instance, INFO),
"Max grace period for refresh exceeded");
should_refresh = 1;
}
if (instance->weird_things == instance->settings.weird_things_threshold) {
should_refresh = 1;
}
if (!should_refresh) {
return;
}
instance->weird_things = 0;
lcb_bootstrap_refresh(instance);
}
void lcb_record_metrics(lcb_t instance,
hrtime_t delta,
uint8_t opcode)
{
lcb_U32 num;
struct lcb_histogram_st *hg = instance->histogram;
if (hg == NULL) {
return;
}
if (delta < 1000) {
/* nsec */
if (++hg->nsec > hg->max) {
hg->max = hg->nsec;
}
} else if (delta < LCB_US2NS(1000)) {
/* micros */
delta /= LCB_US2NS(1);
if ((num = ++hg->usec[delta/10]) > hg->max) {
hg->max = num;
}
} else if (delta < LCB_US2NS(10000)) {
/* 1-10ms */
delta /= LCB_US2NS(1);
assert(delta <= 10000);
if ((num = ++hg->lt10msec[delta/100]) > hg->max) {
hg->max = num;
}
} else if (delta < LCB_S2NS(1)) {
delta /= LCB_US2NS(1000);
if ((num = ++hg->msec[delta/10]) > hg->max) {
hg->max = num;
}
} else {
delta /= LCB_S2NS(1);
if (delta > 9) {
delta = 0;
}
if ((num = ++hg->sec[delta]) > hg->max) {
hg->max = num;
}
}
(void)opcode;
}
static lcb_error_t
dset_ctx_schedule(lcb_MULTICMD_CTX *mctx, const void *cookie)
{
size_t ii;
lcb_error_t err;
lcb_DURSET *dset = CTX_FROM_MULTI(mctx);
char *kptr = dset->kvbufs.base;
if (!DSET_COUNT(dset)) {
lcbdur_destroy(dset);
return LCB_EINVAL;
}
for (ii = 0; ii < DSET_COUNT(dset); ii++) {
lcb_DURITEM *ent = DSET_ENTRIES(dset) + ii;
RESFLD(ent, key) = kptr;
kptr += RESFLD(ent, nkey);
}
if (DSET_PROCS(dset)->schedule) {
err = DSET_PROCS(dset)->schedule(dset);
if (err != LCB_SUCCESS) {
lcbdur_destroy(dset);
return err;
}
}
lcbdur_ref(dset);
dset->cookie = cookie;
dset->nremaining = DSET_COUNT(dset);
dset->ns_timeout = gethrtime() + LCB_US2NS(DSET_OPTFLD(dset, timeout));
lcb_aspend_add(&dset->instance->pendops, LCB_PENDTYPE_DURABILITY, dset);
lcbdur_switch_state(dset, LCBDUR_STATE_INIT);
return LCB_SUCCESS;
}
