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/* Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include "daemon/bindings/impl.h"
static inline double getseconds(uv_timeval_t *tv)
{
return (double)tv->tv_sec + 0.000001*((double)tv->tv_usec);
}
/** Return worker statistics. */
static int wrk_stats(lua_State *L)
{
struct worker_ctx *worker = the_worker;
if (!worker) {
return 0;
}
lua_newtable(L);
lua_pushnumber(L, worker->stats.queries);
lua_setfield(L, -2, "queries");
lua_pushnumber(L, worker->stats.concurrent);
lua_setfield(L, -2, "concurrent");
lua_pushnumber(L, worker->stats.dropped);
lua_setfield(L, -2, "dropped");
lua_pushnumber(L, worker->stats.timeout);
lua_setfield(L, -2, "timeout");
lua_pushnumber(L, worker->stats.udp);
lua_setfield(L, -2, "udp");
lua_pushnumber(L, worker->stats.tcp);
lua_setfield(L, -2, "tcp");
lua_pushnumber(L, worker->stats.tls);
lua_setfield(L, -2, "tls");
lua_pushnumber(L, worker->stats.ipv4);
lua_setfield(L, -2, "ipv4");
lua_pushnumber(L, worker->stats.ipv6);
lua_setfield(L, -2, "ipv6");
lua_pushnumber(L, worker->stats.err_udp);
lua_setfield(L, -2, "err_udp");
lua_pushnumber(L, worker->stats.err_tcp);
lua_setfield(L, -2, "err_tcp");
lua_pushnumber(L, worker->stats.err_tls);
lua_setfield(L, -2, "err_tls");
lua_pushnumber(L, worker->stats.err_http);
lua_setfield(L, -2, "err_http");
/* Add subset of rusage that represents counters. */
uv_rusage_t rusage;
if (uv_getrusage(&rusage) == 0) {
lua_pushnumber(L, getseconds(&rusage.ru_utime));
lua_setfield(L, -2, "usertime");
lua_pushnumber(L, getseconds(&rusage.ru_stime));
lua_setfield(L, -2, "systime");
lua_pushnumber(L, rusage.ru_majflt);
lua_setfield(L, -2, "pagefaults");
lua_pushnumber(L, rusage.ru_nswap);
lua_setfield(L, -2, "swaps");
lua_pushnumber(L, rusage.ru_nvcsw + rusage.ru_nivcsw);
lua_setfield(L, -2, "csw");
}
/* Get RSS */
size_t rss = 0;
if (uv_resident_set_memory(&rss) == 0) {
lua_pushnumber(L, rss);
lua_setfield(L, -2, "rss");
}
return 1;
}
int kr_bindings_worker(lua_State *L)
{
static const luaL_Reg lib[] = {
{ "stats", wrk_stats },
{ NULL, NULL }
};
luaL_register(L, "worker", lib);
return 1;
}
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