static void dns_ctx_release(dns_ctx_handle_t *h) {
if(h->ns == NULL) {
/* Special case for the default */
noit_atomic_dec32(&h->refcnt);
return;
}
pthread_mutex_lock(&dns_ctx_store_lock);
if(noit_atomic_dec32(&h->refcnt) == 0) {
/* I was the last one */
assert(noit_hash_delete(&dns_ctx_store, h->ns, strlen(h->ns),
NULL, dns_ctx_handle_free));
}
pthread_mutex_unlock(&dns_ctx_store_lock);
}
int
stratcon_realtime_http_postresolve(eventer_t e, int mask, void *closure,
struct timeval *now) {
noit_http_session_ctx *ctx = closure;
realtime_context *rc = ctx->dispatcher_closure;
struct realtime_tracker *node;
for(node = rc->checklist; node; node = node->next) {
if(node->noit) {
realtime_recv_ctx_t *rrctx;
rrctx = calloc(1, sizeof(*rrctx));
rrctx->ctx = ctx;
rrctx->rt = node;
stratcon_streamer_connection(NULL, node->noit,
stratcon_realtime_recv_handler,
NULL, rrctx,
free_realtime_recv_ctx);
}
else
noit_atomic_dec32(&ctx->ref_cnt);
}
if(ctx->ref_cnt == 1) {
noit_http_response_end(ctx);
clear_realtime_context(rc);
if(ctx->conn.e) eventer_trigger(ctx->conn.e, EVENTER_WRITE);
}
return 0;
}
static int noit_lua_dns_lookup(lua_State *L) {
dns_lookup_ctx_t *dlc, **holder;
const char *c, *query = "", *ctype = "IN", *rtype = "A";
char *ctype_up, *rtype_up, *d;
void *vnv_pair;
noit_lua_check_info_t *ci;
ci = get_ci(L);
assert(ci);
holder = (dns_lookup_ctx_t **)lua_touserdata(L, lua_upvalueindex(1));
if(holder != lua_touserdata(L,1))
luaL_error(L, "Must be called as method\n");
dlc = *holder;
if(lua_gettop(L) > 1) query = lua_tostring(L, 2);
if(lua_gettop(L) > 2) rtype = lua_tostring(L, 3);
if(lua_gettop(L) > 3) ctype = lua_tostring(L, 4);
ctype_up = alloca(strlen(ctype)+1);
for(d = ctype_up, c = ctype; *c; d++, c++) *d = toupper(*c);
*d = '\0';
rtype_up = alloca(strlen(rtype)+1);
for(d = rtype_up, c = rtype; *c; d++, c++) *d = toupper(*c);
*d = '\0';
if(!noit_hash_retrieve(&dns_ctypes, ctype_up, strlen(ctype_up), &vnv_pair))
dlc->error = strdup("bad class");
else
dlc->query_ctype = ((struct dns_nameval *)vnv_pair)->val;
if(!noit_hash_retrieve(&dns_rtypes, rtype_up, strlen(rtype_up), &vnv_pair))
dlc->error = strdup("bad rr type");
else
dlc->query_rtype = ((struct dns_nameval *)vnv_pair)->val;
dlc->active = 1;
noit_atomic_inc32(&dlc->refcnt);
if(!dlc->error) {
int abs;
if(!dns_ptodn(query, strlen(query), dlc->dn, sizeof(dlc->dn), &abs) ||
!dns_submit_dn(dlc->h->ctx, dlc->dn, dlc->query_ctype, dlc->query_rtype,
abs | DNS_NOSRCH, NULL, dns_cb, dlc)) {
dlc->error = strdup("submission error");
noit_atomic_dec32(&dlc->refcnt);
}
else {
struct timeval now;
gettimeofday(&now, NULL);
dns_timeouts(dlc->h->ctx, -1, now.tv_sec);
}
}
if(dlc->error) {
dlc->active = 0;
luaL_error(L, "dns: %s\n", dlc->error);
}
return noit_lua_yield(ci, 0);
}
static int dns_module_dns_ctx_release(dns_ctx_handle_t *h) {
int rv = 0, last;
if(h->ns == NULL) {
/* Special case for the default */
noit_atomic_dec32(&h->refcnt);
return rv;
}
pthread_mutex_lock(&dns_ctx_store_lock);
last = noit_atomic_dec32(&h->refcnt);
if(last == 0) {
/* I was the last one */
assert(noit_hash_delete(&dns_ctx_store, h->hkey, strlen(h->hkey),
NULL, dns_module_dns_ctx_handle_free));
rv = 1;
}
pthread_mutex_unlock(&dns_ctx_store_lock);
return rv;
}
void lookup_ctx_release(dns_lookup_ctx_t *v) {
if(!v) return;
if(v->error) free(v->error);
v->error = NULL;
if(noit_atomic_dec32(&v->refcnt) == 0) {
dns_ctx_release(v->h);
free(v);
}
}
static void
free_realtime_recv_ctx(void *vctx) {
realtime_recv_ctx_t *rrctx = vctx;
noit_http_session_ctx *ctx = rrctx->ctx;
realtime_context *rc = ctx->dispatcher_closure;
if(noit_atomic_dec32(&ctx->ref_cnt) == 1) {
noit_http_response_end(ctx);
clear_realtime_context(rc);
if(ctx->conn.e) eventer_trigger(ctx->conn.e, EVENTER_WRITE | EVENTER_EXCEPTION);
}
free(rrctx);
}
static void
filterset_free(void *vp) {
filterset_t *fs = vp;
filterrule_t *r;
if(noit_atomic_dec32(&fs->ref_cnt) != 0) return;
noitL(noit_error, "Freeing filterset [%d]: %s\n", fs->ref_cnt, fs->name);
while(fs->rules) {
r = fs->rules->next;
filterrule_free(fs->rules);
fs->rules = r;
}
if(fs->name) free(fs->name);
free(fs);
}
void *
noit_jlog_thread_main(void *e_vptr) {
int mask, bytes_read;
eventer_t e = e_vptr;
acceptor_closure_t *ac = e->closure;
noit_jlog_closure_t *jcl = ac->service_ctx;
char inbuff[sizeof(jlog_id)];
eventer_set_fd_blocking(e->fd);
while(1) {
jlog_id client_chkpt;
int sleeptime = (ac->cmd == NOIT_JLOG_DATA_TEMP_FEED) ?
1 : DEFAULT_SECONDS_BETWEEN_BATCHES;
jlog_get_checkpoint(jcl->jlog, ac->remote_cn, &jcl->chkpt);
jcl->count = jlog_ctx_read_interval(jcl->jlog, &jcl->start, &jcl->finish);
if(jcl->count < 0) {
char idxfile[PATH_MAX];
noitL(noit_error, "jlog_ctx_read_interval: %s\n",
jlog_ctx_err_string(jcl->jlog));
switch (jlog_ctx_err(jcl->jlog)) {
case JLOG_ERR_FILE_CORRUPT:
case JLOG_ERR_IDX_CORRUPT:
jlog_repair_datafile(jcl->jlog, jcl->start.log);
jlog_repair_datafile(jcl->jlog, jcl->start.log + 1);
noitL(noit_error,
"jlog reconstructed, deleting corresponding index.\n");
STRSETDATAFILE(jcl->jlog, idxfile, jcl->start.log);
strlcat(idxfile, INDEX_EXT, sizeof(idxfile));
unlink(idxfile);
STRSETDATAFILE(jcl->jlog, idxfile, jcl->start.log + 1);
strlcat(idxfile, INDEX_EXT, sizeof(idxfile));
unlink(idxfile);
goto alldone;
break;
default:
goto alldone;
}
}
if(jcl->count > MAX_ROWS_AT_ONCE) {
/* Artificially set down the range to make the batches a bit easier
* to handle on the stratcond/postgres end.
* However, we must have more data, so drop the sleeptime to 0
*/
jcl->count = MAX_ROWS_AT_ONCE;
jcl->finish.marker = jcl->start.marker + jcl->count;
sleeptime = 0;
}
if(jcl->count > 0) {
if(noit_jlog_push(e, jcl)) {
goto alldone;
}
/* Read our jlog_id accounting for possibly short reads */
bytes_read = 0;
while(bytes_read < sizeof(jlog_id)) {
int len;
if((len = e->opset->read(e->fd, inbuff + bytes_read,
sizeof(jlog_id) - bytes_read,
&mask, e)) <= 0)
goto alldone;
bytes_read += len;
}
memcpy(&client_chkpt, inbuff, sizeof(jlog_id));
/* Fix the endian */
client_chkpt.log = ntohl(client_chkpt.log);
client_chkpt.marker = ntohl(client_chkpt.marker);
if(memcmp(&jcl->chkpt, &client_chkpt, sizeof(jlog_id))) {
noitL(noit_error,
"client %s submitted invalid checkpoint %u:%u expected %u:%u\n",
ac->remote_cn, client_chkpt.log, client_chkpt.marker,
jcl->chkpt.log, jcl->chkpt.marker);
goto alldone;
}
gettimeofday(&jcl->feed_stats->last_checkpoint, NULL);
jlog_ctx_read_checkpoint(jcl->jlog, &jcl->chkpt);
}
else {
/* we have nothing to write -- maybe we have no checks configured...
* If this is the case "forever", the remote might disconnect and
* we would never know. Do the painful work of detecting a
* disconnected client.
*/
struct pollfd pfd;
pfd.fd = e->fd;
pfd.events = POLLIN | POLLHUP | POLLRDNORM;
pfd.revents = 0;
if(poll(&pfd, 1, 0) != 0) {
/* normally, we'd recv PEEK|DONTWAIT. However, the client should
* not be writing to us. So, we know we can't have any legitimate
* data on this socket (true even though this is SSL). So, if we're
* here then "shit went wrong"
*/
noitL(noit_error, "jlog client %s disconnected while idle\n",
ac->remote_cn);
goto alldone;
}
}
if(sleeptime) sleep(sleeptime);
}
alldone:
e->opset->close(e->fd, &mask, e);
noit_atomic_dec32(&jcl->feed_stats->connections);
noit_jlog_closure_free(jcl);
acceptor_closure_free(ac);
return NULL;
}
