void noit_check_resolver_maintain() {
time_t now;
noit_skiplist *tlist;
noit_skiplist_node *sn;
now = time(NULL);
sn = noit_skiplist_getlist(nc_dns_cache.index);
tlist = sn->data;
sn = noit_skiplist_getlist(tlist);
while(sn) {
dns_cache_node *n = sn->data;
noit_skiplist_next(tlist, &sn); /* move forward */
/* remove if needed */
if(n->last_updated + n->ttl > now) break;
if(n->last_needed + DEFAULT_PURGE_AGE < now &&
!(n->lookup_inflight_v4 || n->lookup_inflight_v6))
noit_skiplist_remove(&nc_dns_cache, n->target, dns_cache_node_free);
else {
int abs;
if(!dns_ptodn(n->target, strlen(n->target),
n->dn, sizeof(n->dn), &abs)) {
blank_update(n);
}
else {
if(!n->lookup_inflight_v4) {
n->lookup_inflight_v4 = noit_true;
if(!dns_submit_dn(dns_ctx, n->dn, DNS_C_IN, DNS_T_A,
abs | DNS_NOSRCH, NULL, dns_cache_resolve_v4, n))
blank_update_v4(n);
else
dns_timeouts(dns_ctx, -1, now);
}
if(!n->lookup_inflight_v6) {
n->lookup_inflight_v6 = noit_true;
if(!dns_submit_dn(dns_ctx, n->dn, DNS_C_IN, DNS_T_AAAA,
abs | DNS_NOSRCH, NULL, dns_cache_resolve_v6, n))
blank_update_v6(n);
else
dns_timeouts(dns_ctx, -1, now);
}
}
noitL(noit_debug, "Firing lookup for '%s'\n", n->target);
continue;
}
}
}
void noit_check_resolver_maintain() {
time_t now;
mtev_skiplist *tlist;
mtev_skiplist_node *sn;
now = time(NULL);
sn = mtev_skiplist_getlist(nc_dns_cache.index);
assert(sn);
tlist = sn->data;
assert(tlist);
sn = mtev_skiplist_getlist(tlist);
while(sn) {
dns_cache_node *n = sn->data;
mtev_skiplist_next(tlist, &sn); /* move forward */
/* remove if needed */
if(n->last_updated + n->ttl > now) break;
if(n->last_needed + DEFAULT_PURGE_AGE < now &&
!(n->lookup_inflight_v4 || n->lookup_inflight_v6))
mtev_skiplist_remove(&nc_dns_cache, n->target, dns_cache_node_free);
else {
int abs;
if(!dns_ptodn(n->target, strlen(n->target),
n->dn, sizeof(n->dn), &abs)) {
blank_update(n);
}
else {
if(!n->lookup_inflight_v4) {
n->lookup_inflight_v4 = mtev_true;
if(!dns_submit_dn(dns_ctx, n->dn, DNS_C_IN, DNS_T_A,
abs | dns_search_flag, NULL, dns_cache_resolve_v4, n))
blank_update_v4(n);
else
dns_timeouts(dns_ctx, -1, now);
}
if(!n->lookup_inflight_v6) {
n->lookup_inflight_v6 = mtev_true;
if(!dns_submit_dn(dns_ctx, n->dn, DNS_C_IN, DNS_T_AAAA,
abs | dns_search_flag, NULL, dns_cache_resolve_v6, n))
blank_update_v6(n);
else
dns_timeouts(dns_ctx, -1, now);
}
}
mtevL(noit_debug, "Firing lookup for '%s'\n", n->target);
continue;
}
}
/* If we have a cache implementation */
if(noit_resolver_cache_store_hook_exists()) {
/* And that implementation is interested in getting a dump... */
if(noit_resolver_cache_store_hook_invoke(NULL, NULL, 0) == MTEV_HOOK_CONTINUE) {
mtev_skiplist_node *sn;
/* dump it all */
DCLOCK();
for(sn = mtev_skiplist_getlist(&nc_dns_cache); sn;
mtev_skiplist_next(&nc_dns_cache, &sn)) {
int sbuffsize;
char sbuff[1024];
dns_cache_node *n = (dns_cache_node *)sn->data;
sbuffsize = dns_cache_node_serialize(sbuff, sizeof(sbuff), n);
if(sbuffsize > 0)
noit_resolver_cache_store_hook_invoke(n->target, sbuff, sbuffsize);
}
DCUNLOCK();
}
}
}
