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relay_metrics.c
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1/* Copyright (c) 2021, The Tor Project, Inc. */
2/* See LICENSE for licensing information */
3
4/**
5 * @file relay_metrics.c
6 * @brief Relay metrics exposed through the MetricsPort
7 **/
8
9#define RELAY_METRICS_ENTRY_PRIVATE
10
11#include "orconfig.h"
12
13#include "core/or/or.h"
14#include "core/mainloop/connection.h"
15#include "core/mainloop/mainloop.h"
16#include "core/or/command.h"
17#include "core/or/congestion_control_common.h"
18#include "core/or/congestion_control_vegas.h"
19#include "core/or/congestion_control_flow.h"
20#include "core/or/circuitlist.h"
21#include "core/or/dos.h"
22#include "core/or/relay.h"
23
24#include "app/config/config.h"
25
26#include "lib/container/smartlist.h"
27#include "lib/log/util_bug.h"
28#include "lib/malloc/malloc.h"
29#include "lib/math/fp.h"
30#include "lib/metrics/metrics_store.h"
31
32#include "feature/hs/hs_dos.h"
33#include "feature/nodelist/nodelist.h"
34#include "feature/nodelist/node_st.h"
35#include "feature/nodelist/routerstatus_st.h"
36#include "feature/nodelist/torcert.h"
37#include "feature/relay/relay_metrics.h"
38#include "feature/relay/router.h"
39#include "feature/relay/routerkeys.h"
40#include "feature/stats/rephist.h"
41
42#include <event2/dns.h>
43
44/** Declarations of each fill function for metrics defined in base_metrics. */
45static void fill_cc_counters_values(void);
46static void fill_cc_gauges_values(void);
47static void fill_circuits_values(void);
48static void fill_conn_counter_values(void);
49static void fill_conn_gauge_values(void);
50static void fill_dns_error_values(void);
51static void fill_dns_query_values(void);
52static void fill_dos_values(void);
53static void fill_global_bw_limit_values(void);
54static void fill_socket_values(void);
55static void fill_onionskins_values(void);
56static void fill_oom_values(void);
57static void fill_streams_values(void);
58static void fill_relay_circ_proto_violation(void);
59static void fill_relay_destroy_cell(void);
60static void fill_relay_drop_cell(void);
61static void fill_relay_flags(void);
62static void fill_tcp_exhaustion_values(void);
63static void fill_traffic_values(void);
64static void fill_signing_cert_expiry(void);
65
66static void fill_est_intro_cells(void);
67static void fill_est_rend_cells(void);
68static void fill_intro1_cells(void);
69static void fill_rend1_cells(void);
70
71/** The base metrics that is a static array of metrics added to the metrics
72 * store.
73 *
74 * The key member MUST be also the index of the entry in the array. */
75static const relay_metrics_entry_t base_metrics[] =
76{
77 {
78 .key = RELAY_METRICS_NUM_OOM_BYTES,
79 .type = METRICS_TYPE_COUNTER,
80 .name = METRICS_NAME(relay_load_oom_bytes_total),
81 .help = "Total number of bytes the OOM has freed by subsystem",
82 .fill_fn = fill_oom_values,
83 },
84 {
85 .key = RELAY_METRICS_NUM_ONIONSKINS,
86 .type = METRICS_TYPE_COUNTER,
87 .name = METRICS_NAME(relay_load_onionskins_total),
88 .help = "Total number of onionskins handled",
89 .fill_fn = fill_onionskins_values,
90 },
91 {
92 .key = RELAY_METRICS_NUM_SOCKETS,
93 .type = METRICS_TYPE_GAUGE,
94 .name = METRICS_NAME(relay_load_socket_total),
95 .help = "Total number of sockets",
96 .fill_fn = fill_socket_values,
97 },
98 {
99 .key = RELAY_METRICS_NUM_GLOBAL_RW_LIMIT,
100 .type = METRICS_TYPE_COUNTER,
101 .name = METRICS_NAME(relay_load_global_rate_limit_reached_total),
102 .help = "Total number of global connection bucket limit reached",
103 .fill_fn = fill_global_bw_limit_values,
104 },
105 {
106 .key = RELAY_METRICS_NUM_DNS,
107 .type = METRICS_TYPE_COUNTER,
108 .name = METRICS_NAME(relay_exit_dns_query_total),
109 .help = "Total number of DNS queries done by this relay",
110 .fill_fn = fill_dns_query_values,
111 },
112 {
113 .key = RELAY_METRICS_NUM_DNS_ERRORS,
114 .type = METRICS_TYPE_COUNTER,
115 .name = METRICS_NAME(relay_exit_dns_error_total),
116 .help = "Total number of DNS errors encountered by this relay",
117 .fill_fn = fill_dns_error_values,
118 },
119 {
120 .key = RELAY_METRICS_NUM_TCP_EXHAUSTION,
121 .type = METRICS_TYPE_COUNTER,
122 .name = METRICS_NAME(relay_load_tcp_exhaustion_total),
123 .help = "Total number of times we ran out of TCP ports",
124 .fill_fn = fill_tcp_exhaustion_values,
125 },
126 {
127 .key = RELAY_METRICS_CONN_COUNTERS,
128 .type = METRICS_TYPE_COUNTER,
129 .name = METRICS_NAME(relay_connections_total),
130 .help = "Total number of created/rejected connections",
131 .fill_fn = fill_conn_counter_values,
132 },
133 {
134 .key = RELAY_METRICS_CONN_GAUGES,
135 .type = METRICS_TYPE_GAUGE,
136 .name = METRICS_NAME(relay_connections),
137 .help = "Total number of opened connections",
138 .fill_fn = fill_conn_gauge_values,
139 },
140 {
141 .key = RELAY_METRICS_NUM_STREAMS,
142 .type = METRICS_TYPE_COUNTER,
143 .name = METRICS_NAME(relay_streams_total),
144 .help = "Total number of streams",
145 .fill_fn = fill_streams_values,
146 },
147 {
148 .key = RELAY_METRICS_CC_COUNTERS,
149 .type = METRICS_TYPE_COUNTER,
150 .name = METRICS_NAME(relay_congestion_control_total),
151 .help = "Congestion control related counters",
152 .fill_fn = fill_cc_counters_values,
153 },
154 {
155 .key = RELAY_METRICS_CC_GAUGES,
156 .type = METRICS_TYPE_GAUGE,
157 .name = METRICS_NAME(relay_congestion_control),
158 .help = "Congestion control related gauges",
159 .fill_fn = fill_cc_gauges_values,
160 },
161 {
162 .key = RELAY_METRICS_NUM_DOS,
163 .type = METRICS_TYPE_COUNTER,
164 .name = METRICS_NAME(relay_dos_total),
165 .help = "Denial of Service defenses related counters",
166 .fill_fn = fill_dos_values,
167 },
168 {
169 .key = RELAY_METRICS_NUM_TRAFFIC,
170 .type = METRICS_TYPE_COUNTER,
171 .name = METRICS_NAME(relay_traffic_bytes),
172 .help = "Traffic related counters",
173 .fill_fn = fill_traffic_values,
174 },
175 {
176 .key = RELAY_METRICS_RELAY_FLAGS,
177 .type = METRICS_TYPE_GAUGE,
178 .name = METRICS_NAME(relay_flag),
179 .help = "Relay flags from consensus",
180 .fill_fn = fill_relay_flags,
181 },
182 {
183 .key = RELAY_METRICS_NUM_CIRCUITS,
184 .type = METRICS_TYPE_GAUGE,
185 .name = METRICS_NAME(relay_circuits_total),
186 .help = "Total number of circuits",
187 .fill_fn = fill_circuits_values,
188 },
189 {
190 .key = RELAY_METRICS_SIGNING_CERT_EXPIRY,
191 .type = METRICS_TYPE_GAUGE,
192 .name = METRICS_NAME(relay_signing_cert_expiry_timestamp),
193 .help = "Timestamp at which the current online keys will expire",
194 .fill_fn = fill_signing_cert_expiry,
195 },
196 {
197 .key = RELAY_METRICS_NUM_EST_REND,
198 .type = METRICS_TYPE_COUNTER,
199 .name = METRICS_NAME(relay_est_rend_total),
200 .help = "Total number of EST_REND cells we received",
201 .fill_fn = fill_est_rend_cells,
202 },
203 {
204 .key = RELAY_METRICS_NUM_EST_INTRO,
205 .type = METRICS_TYPE_COUNTER,
206 .name = METRICS_NAME(relay_est_intro_total),
207 .help = "Total number of EST_INTRO cells we received",
208 .fill_fn = fill_est_intro_cells,
209 },
210 {
211 .key = RELAY_METRICS_NUM_INTRO1_CELLS,
212 .type = METRICS_TYPE_COUNTER,
213 .name = METRICS_NAME(relay_intro1_total),
214 .help = "Total number of INTRO1 cells we received",
215 .fill_fn = fill_intro1_cells,
216 },
217 {
218 .key = RELAY_METRICS_NUM_REND1_CELLS,
219 .type = METRICS_TYPE_COUNTER,
220 .name = METRICS_NAME(relay_rend1_total),
221 .help = "Total number of REND1 cells we received",
222 .fill_fn = fill_rend1_cells,
223 },
224 {
225 .key = RELAY_METRICS_CIRC_DESTROY_CELL,
226 .type = METRICS_TYPE_COUNTER,
227 .name = METRICS_NAME(relay_destroy_cell_total),
228 .help = "Total number of DESTROY cell we received",
229 .fill_fn = fill_relay_destroy_cell,
230 },
231 {
232 .key = RELAY_METRICS_CIRC_PROTO_VIOLATION,
233 .type = METRICS_TYPE_COUNTER,
234 .name = METRICS_NAME(relay_circ_proto_violation_total),
235 .help = "Total number of circuit protocol violation",
236 .fill_fn = fill_relay_circ_proto_violation,
237 },
238 {
239 .key = RELAY_METRICS_CIRC_DROP_CELL,
240 .type = METRICS_TYPE_COUNTER,
241 .name = METRICS_NAME(relay_drop_cell_total),
242 .help = "Total number of DROP cell we received",
243 .fill_fn = fill_relay_drop_cell,
244 },
245};
246static const size_t num_base_metrics = ARRAY_LENGTH(base_metrics);
247
248/** The only and single store of all the relay metrics. */
249static metrics_store_t *the_store;
250
251/** Helper function to convert an handshake type into a string. */
252static inline const char *
253handshake_type_to_str(const uint16_t type)
254{
255 switch (type) {
256 case ONION_HANDSHAKE_TYPE_TAP:
257 return "tap";
258 case ONION_HANDSHAKE_TYPE_FAST:
259 return "fast";
260 case ONION_HANDSHAKE_TYPE_NTOR:
261 return "ntor";
262 case ONION_HANDSHAKE_TYPE_NTOR_V3:
263 return "ntor_v3";
264 default:
265 // LCOV_EXCL_START
266 tor_assert_unreached();
267 // LCOV_EXCL_STOP
268 }
269}
270
271/** Helper function to convert a socket family type into a string. */
272static inline const char *
273af_to_string(const int af)
274{
275 switch (af) {
276 case AF_INET:
277 return "ipv4";
278 case AF_INET6:
279 return "ipv6";
280 case AF_UNIX:
281 return "unix";
282 default:
283 return "<unknown>";
284 }
285}
286
287/** Fill function for the RELAY_METRICS_NUM_CIRCUITS metric. */
288static void
289fill_circuits_values(void)
290{
291 const relay_metrics_entry_t *rentry =
292 &base_metrics[RELAY_METRICS_NUM_CIRCUITS];
293 metrics_store_entry_t *sentry = metrics_store_add(
294 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
295
296 metrics_store_entry_add_label(sentry,
297 metrics_format_label("state", "opened"));
298 metrics_store_entry_update(sentry,
299 smartlist_len(circuit_get_global_list()));
300}
301
302/** Fill function for the RELAY_METRICS_RELAY_FLAGS metric. */
303static void
304fill_relay_flags(void)
305{
306 uint8_t is_fast = 0, is_exit = 0, is_authority = 0, is_stable = 0;
307 uint8_t is_running = 0, is_v2_dir = 0, is_guard = 0, is_sybil = 0;
308 uint8_t is_hs_dir = 0;
309
310 const node_t *me =
311 node_get_by_id((const char *) router_get_my_id_digest());
312 if (me && me->rs) {
313 is_fast = me->rs->is_fast;
314 is_exit = me->rs->is_exit;
315 is_authority = me->rs->is_authority;
316 is_stable = me->rs->is_stable;
317 is_running = me->rs->is_flagged_running;
318 is_v2_dir = me->rs->is_v2_dir;
319 is_guard = me->rs->is_possible_guard;
320 is_sybil = me->rs->is_sybil;
321 is_hs_dir = me->rs->is_hs_dir;
322 }
323
324 const relay_metrics_entry_t *rentry =
325 &base_metrics[RELAY_METRICS_RELAY_FLAGS];
326 metrics_store_entry_t *sentry = metrics_store_add(
327 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
328
329 metrics_store_entry_add_label(sentry,
330 metrics_format_label("type", "Fast"));
331 metrics_store_entry_update(sentry, is_fast);
332
333 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
334 rentry->help, 0, NULL);
335 metrics_store_entry_add_label(sentry,
336 metrics_format_label("type", "Exit"));
337 metrics_store_entry_update(sentry, is_exit);
338
339 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
340 rentry->help, 0, NULL);
341 metrics_store_entry_add_label(sentry,
342 metrics_format_label("type", "Authority"));
343 metrics_store_entry_update(sentry, is_authority);
344
345 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
346 rentry->help, 0, NULL);
347 metrics_store_entry_add_label(sentry,
348 metrics_format_label("type", "Stable"));
349 metrics_store_entry_update(sentry, is_stable);
350
351 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
352 rentry->help, 0, NULL);
353 metrics_store_entry_add_label(sentry,
354 metrics_format_label("type", "HSDir"));
355 metrics_store_entry_update(sentry, is_hs_dir);
356
357 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
358 rentry->help, 0, NULL);
359 metrics_store_entry_add_label(sentry,
360 metrics_format_label("type", "Running"));
361 metrics_store_entry_update(sentry, is_running);
362
363 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
364 rentry->help, 0, NULL);
365 metrics_store_entry_add_label(sentry,
366 metrics_format_label("type", "V2Dir"));
367 metrics_store_entry_update(sentry, is_v2_dir);
368
369 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
370 rentry->help, 0, NULL);
371 metrics_store_entry_add_label(sentry,
372 metrics_format_label("type", "Sybil"));
373 metrics_store_entry_update(sentry, is_sybil);
374
375 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
376 rentry->help, 0, NULL);
377 metrics_store_entry_add_label(sentry,
378 metrics_format_label("type", "Guard"));
379 metrics_store_entry_update(sentry, is_guard);
380}
381
382/** Fill function for the RELAY_METRICS_NUM_TRAFFIC metric. */
383static void
384fill_traffic_values(void)
385{
386 const relay_metrics_entry_t *rentry =
387 &base_metrics[RELAY_METRICS_NUM_TRAFFIC];
388 metrics_store_entry_t *sentry = metrics_store_add(
389 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
390
391 metrics_store_entry_add_label(sentry,
392 metrics_format_label("direction", "read"));
393 metrics_store_entry_update(sentry, get_bytes_read());
394
395 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
396 rentry->help, 0, NULL);
397 metrics_store_entry_add_label(sentry,
398 metrics_format_label("direction", "written"));
399 metrics_store_entry_update(sentry, get_bytes_written());
400}
401
402/** Fill function for the RELAY_METRICS_NUM_DOS metric. */
403static void
404fill_dos_values(void)
405{
406 const relay_metrics_entry_t *rentry = &base_metrics[RELAY_METRICS_NUM_DOS];
407 metrics_store_entry_t *sentry = metrics_store_add(
408 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
409
410 metrics_store_entry_add_label(sentry,
411 metrics_format_label("type", "circuit_rejected"));
412 metrics_store_entry_update(sentry, dos_get_num_cc_rejected());
413
414 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
415 rentry->help, 0, NULL);
416 metrics_store_entry_add_label(sentry,
417 metrics_format_label("type", "circuit_killed_max_cell"));
418 metrics_store_entry_update(sentry, stats_n_circ_max_cell_reached);
419
420 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
421 rentry->help, 0, NULL);
422 metrics_store_entry_add_label(sentry,
423 metrics_format_label("type", "circuit_killed_max_cell_outq"));
424 metrics_store_entry_update(sentry, stats_n_circ_max_cell_outq_reached);
425
426 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
427 rentry->help, 0, NULL);
428 metrics_store_entry_add_label(sentry,
429 metrics_format_label("type", "marked_address"));
430 metrics_store_entry_update(sentry, dos_get_num_cc_marked_addr());
431
432 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
433 rentry->help, 0, NULL);
434 metrics_store_entry_add_label(sentry,
435 metrics_format_label("type", "marked_address_maxq"));
436 metrics_store_entry_update(sentry, dos_get_num_cc_marked_addr_maxq());
437
438 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
439 rentry->help, 0, NULL);
440 metrics_store_entry_add_label(sentry,
441 metrics_format_label("type", "conn_rejected"));
442 metrics_store_entry_update(sentry, dos_get_num_conn_addr_connect_rejected());
443
444 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
445 rentry->help, 0, NULL);
446 metrics_store_entry_add_label(sentry,
447 metrics_format_label("type", "concurrent_conn_rejected"));
448 metrics_store_entry_update(sentry, dos_get_num_conn_addr_rejected());
449
450 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
451 rentry->help, 0, NULL);
452 metrics_store_entry_add_label(sentry,
453 metrics_format_label("type", "single_hop_refused"));
454 metrics_store_entry_update(sentry, dos_get_num_single_hop_refused());
455
456 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
457 rentry->help, 0, NULL);
458 metrics_store_entry_add_label(sentry,
459 metrics_format_label("type", "introduce2_rejected"));
460 metrics_store_entry_update(sentry, hs_dos_get_intro2_rejected_count());
461
462 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
463 rentry->help, 0, NULL);
464 metrics_store_entry_add_label(sentry,
465 metrics_format_label("type", "stream_rejected"));
466 metrics_store_entry_update(sentry, dos_get_num_stream_rejected());
467}
468
469/** Fill function for the RELAY_METRICS_CC_COUNTERS metric. */
470static void
471fill_cc_counters_values(void)
472{
473 const relay_metrics_entry_t *rentry =
474 &base_metrics[RELAY_METRICS_CC_COUNTERS];
475
476 metrics_store_entry_t *sentry = metrics_store_add(
477 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
478 metrics_store_entry_add_label(sentry,
479 metrics_format_label("state", "starvation"));
480 metrics_store_entry_add_label(sentry,
481 metrics_format_label("action", "rtt_reset"));
482 metrics_store_entry_update(sentry, congestion_control_get_num_rtt_reset());
483
484 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
485 rentry->help, 0, NULL);
486 metrics_store_entry_add_label(sentry,
487 metrics_format_label("state", "clock_stalls"));
488 metrics_store_entry_add_label(sentry,
489 metrics_format_label("action", "rtt_skipped"));
490 metrics_store_entry_update(sentry,
491 congestion_control_get_num_clock_stalls());
492
493 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
494 rentry->help, 0, NULL);
495 metrics_store_entry_add_label(sentry,
496 metrics_format_label("state", "flow_control"));
497 metrics_store_entry_add_label(sentry,
498 metrics_format_label("action", "xoff_num_sent"));
499 metrics_store_entry_update(sentry,
500 cc_stats_flow_num_xoff_sent);
501
502 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
503 rentry->help, 0, NULL);
504 metrics_store_entry_add_label(sentry,
505 metrics_format_label("state", "flow_control"));
506 metrics_store_entry_add_label(sentry,
507 metrics_format_label("action", "xon_num_sent"));
508 metrics_store_entry_update(sentry,
509 cc_stats_flow_num_xon_sent);
510
511 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
512 rentry->help, 0, NULL);
513 metrics_store_entry_add_label(sentry,
514 metrics_format_label("state", "cc_limits"));
515 metrics_store_entry_add_label(sentry,
516 metrics_format_label("action", "above_delta"));
517 metrics_store_entry_update(sentry, cc_stats_vegas_above_delta);
518
519 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
520 rentry->help, 0, NULL);
521 metrics_store_entry_add_label(sentry,
522 metrics_format_label("state", "cc_limits"));
523 metrics_store_entry_add_label(sentry,
524 metrics_format_label("action", "above_ss_cwnd_max"));
525 metrics_store_entry_update(sentry, cc_stats_vegas_above_ss_cwnd_max);
526
527 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
528 rentry->help, 0, NULL);
529 metrics_store_entry_add_label(sentry,
530 metrics_format_label("state", "cc_limits"));
531 metrics_store_entry_add_label(sentry,
532 metrics_format_label("action", "below_ss_inc_floor"));
533 metrics_store_entry_update(sentry, cc_stats_vegas_below_ss_inc_floor);
534
535 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
536 rentry->help, 0, NULL);
537 metrics_store_entry_add_label(sentry,
538 metrics_format_label("state", "cc_circuits"));
539 metrics_store_entry_add_label(sentry,
540 metrics_format_label("action", "circs_created"));
541 metrics_store_entry_update(sentry, cc_stats_circs_created);
542
543 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
544 rentry->help, 0, NULL);
545 metrics_store_entry_add_label(sentry,
546 metrics_format_label("state", "cc_circuits"));
547 metrics_store_entry_add_label(sentry,
548 metrics_format_label("action", "circs_closed"));
549 metrics_store_entry_update(sentry, cc_stats_circs_closed);
550
551 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
552 rentry->help, 0, NULL);
553 metrics_store_entry_add_label(sentry,
554 metrics_format_label("state", "cc_circuits"));
555 metrics_store_entry_add_label(sentry,
556 metrics_format_label("action", "circs_exited_ss"));
557 metrics_store_entry_update(sentry, cc_stats_vegas_circ_exited_ss);
558}
559
560/** Fill function for the RELAY_METRICS_CC_GAUGES metric. */
561static void
562fill_cc_gauges_values(void)
563{
564 const relay_metrics_entry_t *rentry =
565 &base_metrics[RELAY_METRICS_CC_GAUGES];
566
567 metrics_store_entry_t *sentry = metrics_store_add(
568 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
569 metrics_store_entry_add_label(sentry,
570 metrics_format_label("state", "slow_start_exit"));
571 metrics_store_entry_add_label(sentry,
572 metrics_format_label("action", "cwnd"));
573 metrics_store_entry_update(sentry,
574 tor_llround(cc_stats_vegas_exit_ss_cwnd_ma));
575
576 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
577 rentry->help, 0, NULL);
578 metrics_store_entry_add_label(sentry,
579 metrics_format_label("state", "slow_start_exit"));
580 metrics_store_entry_add_label(sentry,
581 metrics_format_label("action", "bdp"));
582 metrics_store_entry_update(sentry,
583 tor_llround(cc_stats_vegas_exit_ss_bdp_ma));
584
585 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
586 rentry->help, 0, NULL);
587 metrics_store_entry_add_label(sentry,
588 metrics_format_label("state", "slow_start_exit"));
589 metrics_store_entry_add_label(sentry,
590 metrics_format_label("action", "inc"));
591 metrics_store_entry_update(sentry,
592 tor_llround(cc_stats_vegas_exit_ss_inc_ma));
593
594 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
595 rentry->help, 0, NULL);
596 metrics_store_entry_add_label(sentry,
597 metrics_format_label("state", "on_circ_close"));
598 metrics_store_entry_add_label(sentry,
599 metrics_format_label("action", "cwnd"));
600 metrics_store_entry_update(sentry,
601 tor_llround(cc_stats_circ_close_cwnd_ma));
602
603 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
604 rentry->help, 0, NULL);
605 metrics_store_entry_add_label(sentry,
606 metrics_format_label("state", "on_circ_close"));
607 metrics_store_entry_add_label(sentry,
608 metrics_format_label("action", "ss_cwnd"));
609 metrics_store_entry_update(sentry,
610 tor_llround(cc_stats_circ_close_ss_cwnd_ma));
611
612 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
613 rentry->help, 0, NULL);
614 metrics_store_entry_add_label(sentry,
615 metrics_format_label("state", "buffers"));
616 metrics_store_entry_add_label(sentry,
617 metrics_format_label("action", "xon_outbuf"));
618 metrics_store_entry_update(sentry,
619 tor_llround(cc_stats_flow_xon_outbuf_ma));
620
621 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
622 rentry->help, 0, NULL);
623 metrics_store_entry_add_label(sentry,
624 metrics_format_label("state", "buffers"));
625 metrics_store_entry_add_label(sentry,
626 metrics_format_label("action", "xoff_outbuf"));
627 metrics_store_entry_update(sentry,
628 tor_llround(cc_stats_flow_xoff_outbuf_ma));
629
630 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
631 rentry->help, 0, NULL);
632 metrics_store_entry_add_label(sentry,
633 metrics_format_label("state", "cc_backoff"));
634 metrics_store_entry_add_label(sentry,
635 metrics_format_label("action", "chan_blocked_pct"));
636 metrics_store_entry_update(sentry,
637 tor_llround(cc_stats_vegas_csig_blocked_ma));
638
639 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
640 rentry->help, 0, NULL);
641 metrics_store_entry_add_label(sentry,
642 metrics_format_label("state", "cc_backoff"));
643 metrics_store_entry_add_label(sentry,
644 metrics_format_label("action", "gamma_drop"));
645 metrics_store_entry_update(sentry,
646 tor_llround(cc_stats_vegas_gamma_drop_ma));
647
648 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
649 rentry->help, 0, NULL);
650 metrics_store_entry_add_label(sentry,
651 metrics_format_label("state", "cc_backoff"));
652 metrics_store_entry_add_label(sentry,
653 metrics_format_label("action", "delta_drop"));
654 metrics_store_entry_update(sentry,
655 tor_llround(cc_stats_vegas_delta_drop_ma));
656
657 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
658 rentry->help, 0, NULL);
659 metrics_store_entry_add_label(sentry,
660 metrics_format_label("state", "cc_backoff"));
661 metrics_store_entry_add_label(sentry,
662 metrics_format_label("action", "ss_chan_blocked_pct"));
663 metrics_store_entry_update(sentry,
664 tor_llround(cc_stats_vegas_ss_csig_blocked_ma));
665
666 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
667 rentry->help, 0, NULL);
668 metrics_store_entry_add_label(sentry,
669 metrics_format_label("state", "cc_cwnd_update"));
670 metrics_store_entry_add_label(sentry,
671 metrics_format_label("action", "alpha_pct"));
672 metrics_store_entry_update(sentry,
673 tor_llround(cc_stats_vegas_csig_alpha_ma));
674
675 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
676 rentry->help, 0, NULL);
677 metrics_store_entry_add_label(sentry,
678 metrics_format_label("state", "cc_cwnd_update"));
679 metrics_store_entry_add_label(sentry,
680 metrics_format_label("action", "beta_pct"));
681 metrics_store_entry_update(sentry,
682 tor_llround(cc_stats_vegas_csig_beta_ma));
683
684 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
685 rentry->help, 0, NULL);
686 metrics_store_entry_add_label(sentry,
687 metrics_format_label("state", "cc_cwnd_update"));
688 metrics_store_entry_add_label(sentry,
689 metrics_format_label("action", "delta_pct"));
690 metrics_store_entry_update(sentry,
691 tor_llround(cc_stats_vegas_csig_delta_ma));
692
693 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
694 rentry->help, 0, NULL);
695 metrics_store_entry_add_label(sentry,
696 metrics_format_label("state", "cc_estimates"));
697 metrics_store_entry_add_label(sentry,
698 metrics_format_label("action", "ss_queue"));
699 metrics_store_entry_update(sentry,
700 tor_llround(cc_stats_vegas_ss_queue_ma));
701
702 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
703 rentry->help, 0, NULL);
704 metrics_store_entry_add_label(sentry,
705 metrics_format_label("state", "cc_estimates"));
706 metrics_store_entry_add_label(sentry,
707 metrics_format_label("action", "queue"));
708 metrics_store_entry_update(sentry,
709 tor_llround(cc_stats_vegas_queue_ma));
710
711 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
712 rentry->help, 0, NULL);
713 metrics_store_entry_add_label(sentry,
714 metrics_format_label("state", "cc_estimates"));
715 metrics_store_entry_add_label(sentry,
716 metrics_format_label("action", "bdp"));
717 metrics_store_entry_update(sentry,
718 tor_llround(cc_stats_vegas_bdp_ma));
719}
720
721/** Helper: Fill in single stream metrics output. */
722static void
723fill_single_stream_value(metrics_store_entry_t *sentry, uint8_t cmd)
724{
725 metrics_store_entry_add_label(sentry,
726 metrics_format_label("type", relay_command_to_string(cmd)));
727 metrics_store_entry_update(sentry, rep_hist_get_exit_stream_seen(cmd));
728}
729
730/** Fill function for the RELAY_METRICS_NUM_STREAMS metric. */
731static void
732fill_streams_values(void)
733{
734 const relay_metrics_entry_t *rentry =
735 &base_metrics[RELAY_METRICS_NUM_STREAMS];
736 metrics_store_entry_t *sentry = metrics_store_add(
737 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
738 fill_single_stream_value(sentry, RELAY_COMMAND_BEGIN);
739
740 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
741 rentry->help, 0, NULL);
742 fill_single_stream_value(sentry, RELAY_COMMAND_BEGIN_DIR);
743
744 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
745 rentry->help, 0, NULL);
746 fill_single_stream_value(sentry, RELAY_COMMAND_RESOLVE);
747}
748
749/** Helper: Fill in single connection metrics output. */
750static void
751fill_single_connection_value(metrics_store_entry_t *sentry,
752 unsigned int conn_type,
753 const char* direction,
754 const char* state,
755 int socket_family,
756 uint64_t value)
757{
758 metrics_store_entry_add_label(sentry,
759 metrics_format_label("type", conn_type_to_string(conn_type)));
760 metrics_store_entry_add_label(sentry,
761 metrics_format_label("direction", direction));
762 metrics_store_entry_add_label(sentry,
763 metrics_format_label("state", state));
764 metrics_store_entry_add_label(sentry,
765 metrics_format_label("family", af_to_string(socket_family)));
766 metrics_store_entry_update(sentry, value);
767}
768
769/** Fill function for the RELAY_METRICS_CONN_COUNTERS metric. */
770static void
771fill_conn_counter_values(void)
772{
773 const relay_metrics_entry_t *rentry =
774 &base_metrics[RELAY_METRICS_CONN_COUNTERS];
775
776 for (unsigned int i = CONN_TYPE_MIN_; i < CONN_TYPE_MAX_ ; i++) {
777 /* Type is unused. Ugly but else we clobber the output. */
778 if (i == 10) {
779 continue;
780 }
781 metrics_store_entry_t *sentry = metrics_store_add(
782 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
783 fill_single_connection_value(sentry, i, "initiated", "created", AF_INET,
784 rep_hist_get_conn_created(false, i, AF_INET));
785 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
786 rentry->help, 0, NULL);
787 fill_single_connection_value(sentry, i, "initiated", "created", AF_INET6,
788 rep_hist_get_conn_created(false, i,
789 AF_INET6));
790
791 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
792 rentry->help, 0, NULL);
793 fill_single_connection_value(sentry, i, "received", "created", AF_INET,
794 rep_hist_get_conn_created(true, i, AF_INET));
795 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
796 rentry->help, 0, NULL);
797 fill_single_connection_value(sentry, i, "received", "created", AF_INET6,
798 rep_hist_get_conn_created(true, i, AF_INET6));
799
800 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
801 rentry->help, 0, NULL);
802 fill_single_connection_value(sentry, i, "received", "rejected", AF_INET,
803 rep_hist_get_conn_rejected(i, AF_INET));
804 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
805 rentry->help, 0, NULL);
806 fill_single_connection_value(sentry, i, "received", "rejected", AF_INET6,
807 rep_hist_get_conn_rejected(i, AF_INET6));
808
809 /* No counter for "initiated" + "rejected" connections exists. */
810 }
811}
812
813/** Fill function for the RELAY_METRICS_CONN_GAUGES metric. */
814static void
815fill_conn_gauge_values(void)
816{
817 const relay_metrics_entry_t *rentry =
818 &base_metrics[RELAY_METRICS_CONN_GAUGES];
819
820 for (unsigned int i = CONN_TYPE_MIN_; i < CONN_TYPE_MAX_ ; i++) {
821 /* Type is unused. Ugly but else we clobber the output. */
822 if (i == 10) {
823 continue;
824 }
825 metrics_store_entry_t *sentry = metrics_store_add(
826 the_store, rentry->type, rentry->name, rentry->help, 0, NULL);
827 fill_single_connection_value(sentry, i, "initiated", "opened", AF_INET,
828 rep_hist_get_conn_opened(false, i, AF_INET));
829 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
830 rentry->help, 0, NULL);
831 fill_single_connection_value(sentry, i, "initiated", "opened", AF_INET6,
832 rep_hist_get_conn_opened(false, i, AF_INET6));
833
834 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
835 rentry->help, 0, NULL);
836 fill_single_connection_value(sentry, i, "received", "opened", AF_INET,
837 rep_hist_get_conn_opened(true, i, AF_INET));
838 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
839 rentry->help, 0, NULL);
840 fill_single_connection_value(sentry, i, "received", "opened", AF_INET6,
841 rep_hist_get_conn_opened(true, i, AF_INET6));
842 }
843}
844
845/** Fill function for the RELAY_METRICS_NUM_DNS metrics. */
846static void
847fill_tcp_exhaustion_values(void)
848{
849 metrics_store_entry_t *sentry;
850 const relay_metrics_entry_t *rentry =
851 &base_metrics[RELAY_METRICS_NUM_TCP_EXHAUSTION];
852
853 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
854 rentry->help, 0, NULL);
855 metrics_store_entry_update(sentry, rep_hist_get_n_tcp_exhaustion());
856}
857
858/* NOTE: Disable the record type label until libevent is fixed. */
859#if 0
860/** Helper array containing mapping for the name of the different DNS records
861 * and their corresponding libevent values. */
862static struct dns_type {
863 const char *name;
864 uint8_t type;
865} dns_types[] = {
866 { .name = "A", .type = DNS_IPv4_A },
867 { .name = "PTR", .type = DNS_PTR },
868 { .name = "AAAA", .type = DNS_IPv6_AAAA },
869};
870static const size_t num_dns_types = ARRAY_LENGTH(dns_types);
871#endif
872
873/** Fill function for the RELAY_METRICS_NUM_DNS_ERRORS metrics. */
874static void
875fill_dns_error_values(void)
876{
877 metrics_store_entry_t *sentry;
878 const relay_metrics_entry_t *rentry =
879 &base_metrics[RELAY_METRICS_NUM_DNS_ERRORS];
880
881 /* Helper array to map libeven DNS errors to their names and so we can
882 * iterate over this array to add all metrics. */
883 static struct dns_error {
884 const char *name;
885 uint8_t key;
886 } errors[] = {
887 { .name = "success", .key = DNS_ERR_NONE },
888 { .name = "format", .key = DNS_ERR_FORMAT },
889 { .name = "serverfailed", .key = DNS_ERR_SERVERFAILED },
890 { .name = "notexist", .key = DNS_ERR_NOTEXIST },
891 { .name = "notimpl", .key = DNS_ERR_NOTIMPL },
892 { .name = "refused", .key = DNS_ERR_REFUSED },
893 { .name = "truncated", .key = DNS_ERR_TRUNCATED },
894 { .name = "unknown", .key = DNS_ERR_UNKNOWN },
895 { .name = "tor_timeout", .key = DNS_ERR_TIMEOUT },
896 { .name = "shutdown", .key = DNS_ERR_SHUTDOWN },
897 { .name = "cancel", .key = DNS_ERR_CANCEL },
898 { .name = "nodata", .key = DNS_ERR_NODATA },
899 };
900 static const size_t num_errors = ARRAY_LENGTH(errors);
901
902 /* NOTE: Disable the record type label until libevent is fixed. */
903#if 0
904 for (size_t i = 0; i < num_dns_types; i++) {
905 /* Dup the label because metrics_format_label() returns a pointer to a
906 * string on the stack and we need that label for all metrics. */
907 char *record_label =
908 tor_strdup(metrics_format_label("record", dns_types[i].name));
909
910 for (size_t j = 0; j < num_errors; j++) {
911 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
912 rentry->help, 0, NULL);
913 metrics_store_entry_add_label(sentry, record_label);
914 metrics_store_entry_add_label(sentry,
915 metrics_format_label("reason", errors[j].name));
916 metrics_store_entry_update(sentry,
917 rep_hist_get_n_dns_error(dns_types[i].type, errors[j].key));
918 }
919 tor_free(record_label);
920 }
921#endif
922
923 /* Put in the DNS errors, unfortunately not per-type for now. */
924 for (size_t j = 0; j < num_errors; j++) {
925 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
926 rentry->help, 0, NULL);
927 metrics_store_entry_add_label(sentry,
928 metrics_format_label("reason", errors[j].name));
929 metrics_store_entry_update(sentry,
930 rep_hist_get_n_dns_error(0, errors[j].key));
931 }
932}
933
934/** Fill function for the RELAY_METRICS_NUM_DNS metrics. */
935static void
936fill_dns_query_values(void)
937{
938 metrics_store_entry_t *sentry;
939 const relay_metrics_entry_t *rentry =
940 &base_metrics[RELAY_METRICS_NUM_DNS];
941
942 /* NOTE: Disable the record type label until libevent is fixed (#40490). */
943#if 0
944 for (size_t i = 0; i < num_dns_types; i++) {
945 /* Dup the label because metrics_format_label() returns a pointer to a
946 * string on the stack and we need that label for all metrics. */
947 char *record_label =
948 tor_strdup(metrics_format_label("record", dns_types[i].name));
949 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
950 rentry->help, 0, NULL);
951 metrics_store_entry_add_label(sentry, record_label);
952 metrics_store_entry_update(sentry,
953 rep_hist_get_n_dns_request(dns_types[i].type));
954 tor_free(record_label);
955 }
956#endif
957
958 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
959 rentry->help, 0, NULL);
960 metrics_store_entry_update(sentry, rep_hist_get_n_dns_request(0));
961}
962
963/** Fill function for the RELAY_METRICS_NUM_GLOBAL_RW_LIMIT metrics. */
964static void
965fill_global_bw_limit_values(void)
966{
967 metrics_store_entry_t *sentry;
968 const relay_metrics_entry_t *rentry =
969 &base_metrics[RELAY_METRICS_NUM_GLOBAL_RW_LIMIT];
970
971 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
972 rentry->help, 0, NULL);
973 metrics_store_entry_add_label(sentry,
974 metrics_format_label("side", "read"));
975 metrics_store_entry_update(sentry, rep_hist_get_n_read_limit_reached());
976
977 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
978 rentry->help, 0, NULL);
979 metrics_store_entry_add_label(sentry,
980 metrics_format_label("side", "write"));
981 metrics_store_entry_update(sentry, rep_hist_get_n_write_limit_reached());
982}
983
984/** Fill function for the RELAY_METRICS_NUM_SOCKETS metrics. */
985static void
986fill_socket_values(void)
987{
988 metrics_store_entry_t *sentry;
989 const relay_metrics_entry_t *rentry =
990 &base_metrics[RELAY_METRICS_NUM_SOCKETS];
991
992 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
993 rentry->help, 0, NULL);
994 metrics_store_entry_add_label(sentry,
995 metrics_format_label("state", "opened"));
996 metrics_store_entry_update(sentry, get_n_open_sockets());
997
998 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
999 rentry->help, 0, NULL);
1000 metrics_store_entry_update(sentry, get_max_sockets());
1001}
1002
1003/** Fill function for the RELAY_METRICS_NUM_ONIONSKINS metrics. */
1004static void
1005fill_onionskins_values(void)
1006{
1007 metrics_store_entry_t *sentry;
1008 const relay_metrics_entry_t *rentry =
1009 &base_metrics[RELAY_METRICS_NUM_ONIONSKINS];
1010
1011 for (uint16_t t = 0; t <= MAX_ONION_HANDSHAKE_TYPE; t++) {
1012 /* Dup the label because metrics_format_label() returns a pointer to a
1013 * string on the stack and we need that label for all metrics. */
1014 char *type_label =
1015 tor_strdup(metrics_format_label("type", handshake_type_to_str(t)));
1016 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1017 rentry->help, 0, NULL);
1018 metrics_store_entry_add_label(sentry, type_label);
1019 metrics_store_entry_add_label(sentry,
1020 metrics_format_label("action", "processed"));
1021 metrics_store_entry_update(sentry,
1022 rep_hist_get_circuit_n_handshake_assigned(t));
1023
1024 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1025 rentry->help, 0, NULL);
1026 metrics_store_entry_add_label(sentry, type_label);
1027 metrics_store_entry_add_label(sentry,
1028 metrics_format_label("action", "dropped"));
1029 metrics_store_entry_update(sentry,
1030 rep_hist_get_circuit_n_handshake_dropped(t));
1031 tor_free(type_label);
1032 }
1033}
1034
1035/** Fill function for the RELAY_METRICS_NUM_OOM_BYTES metrics. */
1036static void
1037fill_oom_values(void)
1038{
1039 metrics_store_entry_t *sentry;
1040 const relay_metrics_entry_t *rentry =
1041 &base_metrics[RELAY_METRICS_NUM_OOM_BYTES];
1042
1043 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1044 rentry->help, 0, NULL);
1045 metrics_store_entry_add_label(sentry,
1046 metrics_format_label("subsys", "cell"));
1047 metrics_store_entry_update(sentry, oom_stats_n_bytes_removed_cell);
1048
1049 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1050 rentry->help, 0, NULL);
1051 metrics_store_entry_add_label(sentry,
1052 metrics_format_label("subsys", "dns"));
1053 metrics_store_entry_update(sentry, oom_stats_n_bytes_removed_dns);
1054
1055 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1056 rentry->help, 0, NULL);
1057 metrics_store_entry_add_label(sentry,
1058 metrics_format_label("subsys", "geoip"));
1059 metrics_store_entry_update(sentry, oom_stats_n_bytes_removed_geoip);
1060
1061 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1062 rentry->help, 0, NULL);
1063 metrics_store_entry_add_label(sentry,
1064 metrics_format_label("subsys", "hsdir"));
1065 metrics_store_entry_update(sentry, oom_stats_n_bytes_removed_hsdir);
1066}
1067
1068/** Fill function for the RELAY_METRICS_SIGNING_CERT_EXPIRY metrics. */
1069static void
1070fill_signing_cert_expiry(void)
1071{
1072 metrics_store_entry_t *sentry;
1073 const tor_cert_t *signing_key;
1074 const relay_metrics_entry_t *rentry =
1075 &base_metrics[RELAY_METRICS_SIGNING_CERT_EXPIRY];
1076
1077 if (get_options()->OfflineMasterKey) {
1078 signing_key = get_master_signing_key_cert();
1079 if (signing_key) {
1080 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1081 rentry->help, 0, NULL);
1082 metrics_store_entry_update(sentry, signing_key->valid_until);
1083 }
1084 }
1085}
1086
1087static uint64_t est_intro_actions[EST_INTRO_ACTION_COUNT] = {0};
1088
1089void
1090relay_increment_est_intro_action(est_intro_action_t action)
1091{
1092 est_intro_actions[action]++;
1093}
1094
1095static void
1096fill_est_intro_cells(void)
1097{
1098 metrics_store_entry_t *sentry;
1099 const relay_metrics_entry_t *rentry =
1100 &base_metrics[RELAY_METRICS_NUM_EST_INTRO];
1101
1102 static struct {
1103 const char *name;
1104 est_intro_action_t key;
1105 } actions[] = {
1106 {.name = "success", .key = EST_INTRO_SUCCESS},
1107 {.name = "malformed", .key = EST_INTRO_MALFORMED},
1108 {.name = "unsuitable_circuit", .key = EST_INTRO_UNSUITABLE_CIRCUIT},
1109 {.name = "circuit_dead", .key = EST_INTRO_CIRCUIT_DEAD},
1110 };
1111 static const size_t num_actions = ARRAY_LENGTH(actions);
1112
1113 for (size_t i = 0; i < num_actions; ++i) {
1114 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1115 rentry->help, 0, NULL);
1116 metrics_store_entry_add_label(
1117 sentry, metrics_format_label("action", actions[i].name));
1118 metrics_store_entry_update(sentry,
1119 (long)est_intro_actions[actions[i].key]);
1120 }
1121}
1122
1123static uint64_t est_rend_actions[EST_REND_ACTION_COUNT] = {0};
1124
1125void
1126relay_increment_est_rend_action(est_rend_action_t action)
1127{
1128 est_rend_actions[action]++;
1129}
1130
1131static void
1132fill_est_rend_cells(void)
1133{
1134 metrics_store_entry_t *sentry;
1135 const relay_metrics_entry_t *rentry =
1136 &base_metrics[RELAY_METRICS_NUM_EST_REND];
1137
1138 static struct {
1139 const char *name;
1140 est_rend_action_t key;
1141 } actions[] = {
1142 {.name = "success", .key = EST_REND_SUCCESS},
1143 {.name = "unsuitable_circuit", .key = EST_REND_UNSUITABLE_CIRCUIT},
1144 {.name = "single_hop", .key = EST_REND_SINGLE_HOP},
1145 {.name = "malformed", .key = EST_REND_MALFORMED},
1146 {.name = "duplicate_cookie", .key = EST_REND_DUPLICATE_COOKIE},
1147 {.name = "circuit_dead", .key = EST_REND_CIRCUIT_DEAD},
1148 };
1149 static const size_t num_actions = ARRAY_LENGTH(actions);
1150
1151 for (size_t i = 0; i < num_actions; ++i) {
1152 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1153 rentry->help, 0, NULL);
1154 metrics_store_entry_add_label(
1155 sentry, metrics_format_label("action", actions[i].name));
1156 metrics_store_entry_update(sentry, (long)est_rend_actions[actions[i].key]);
1157 }
1158}
1159
1160static uint64_t intro1_actions[INTRO1_ACTION_COUNT] = {0};
1161
1162void
1163relay_increment_intro1_action(intro1_action_t action)
1164{
1165 intro1_actions[action]++;
1166}
1167
1168static void
1169fill_intro1_cells(void)
1170{
1171 metrics_store_entry_t *sentry;
1172 const relay_metrics_entry_t *rentry =
1173 &base_metrics[RELAY_METRICS_NUM_INTRO1_CELLS];
1174
1175 static struct {
1176 const char *name;
1177 intro1_action_t key;
1178 } actions[] = {
1179 {.name = "success", .key = INTRO1_SUCCESS},
1180 {.name = "circuit_dead", .key = INTRO1_CIRCUIT_DEAD},
1181 {.name = "malformed", .key = INTRO1_MALFORMED},
1182 {.name = "unknown_service", .key = INTRO1_UNKNOWN_SERVICE},
1183 {.name = "rate_limited", .key = INTRO1_RATE_LIMITED},
1184 {.name = "circuit_reused", .key = INTRO1_CIRCUIT_REUSED},
1185 {.name = "single_hop", .key = INTRO1_SINGLE_HOP},
1186 };
1187 static const size_t num_actions = ARRAY_LENGTH(actions);
1188
1189 for (size_t i = 0; i < num_actions; ++i) {
1190 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1191 rentry->help, 0, NULL);
1192 metrics_store_entry_add_label(
1193 sentry, metrics_format_label("action", actions[i].name));
1194 metrics_store_entry_update(sentry, (long)intro1_actions[actions[i].key]);
1195 }
1196}
1197
1198static uint64_t rend1_actions[REND1_ACTION_COUNT] = {0};
1199
1200void
1201relay_increment_rend1_action(rend1_action_t action)
1202{
1203 rend1_actions[action]++;
1204}
1205
1206static void
1207fill_rend1_cells(void)
1208{
1209 metrics_store_entry_t *sentry;
1210 const relay_metrics_entry_t *rentry =
1211 &base_metrics[RELAY_METRICS_NUM_REND1_CELLS];
1212
1213 static struct {
1214 const char *name;
1215 rend1_action_t key;
1216 } actions[] = {
1217 {.name = "success", .key = REND1_SUCCESS},
1218 {.name = "unsuitable_circuit", .key = REND1_UNSUITABLE_CIRCUIT},
1219 {.name = "malformed", .key = REND1_MALFORMED},
1220 {.name = "unknown_cookie", .key = REND1_UNKNOWN_COOKIE},
1221 {.name = "circuit_dead", .key = REND1_CIRCUIT_DEAD},
1222 };
1223 static const size_t num_actions = ARRAY_LENGTH(actions);
1224
1225 for (size_t i = 0; i < num_actions; ++i) {
1226 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1227 rentry->help, 0, NULL);
1228 metrics_store_entry_add_label(
1229 sentry, metrics_format_label("action", actions[i].name));
1230 metrics_store_entry_update(sentry, (long)rend1_actions[actions[i].key]);
1231 }
1232}
1233
1234/** Fill the metrics store for the RELAY_METRICS_CIRC_DESTROY_CELL counter. */
1235static void
1236fill_relay_destroy_cell(void)
1237{
1238 metrics_store_entry_t *sentry;
1239 const relay_metrics_entry_t *rentry =
1240 &base_metrics[RELAY_METRICS_CIRC_DESTROY_CELL];
1241
1242 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1243 rentry->help, 0, NULL);
1244 metrics_store_entry_update(sentry,
1245 (int64_t) stats_n_destroy_cells_processed);
1246}
1247
1248/** Fill the metrics store for the RELAY_METRICS_CIRC_DROP_CELL counter. */
1249static void
1250fill_relay_drop_cell(void)
1251{
1252 metrics_store_entry_t *sentry;
1253 const relay_metrics_entry_t *rentry =
1254 &base_metrics[RELAY_METRICS_CIRC_DROP_CELL];
1255
1256 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1257 rentry->help, 0, NULL);
1258 metrics_store_entry_update(sentry, rep_hist_get_drop_cell_received_count());
1259}
1260
1261/** Fill the metrics store for the RELAY_METRICS_CIRC_PROTO_VIOLATION. */
1262static void
1263fill_relay_circ_proto_violation(void)
1264{
1265 metrics_store_entry_t *sentry;
1266 const relay_metrics_entry_t *rentry =
1267 &base_metrics[RELAY_METRICS_CIRC_PROTO_VIOLATION];
1268
1269 sentry = metrics_store_add(the_store, rentry->type, rentry->name,
1270 rentry->help, 0, NULL);
1271 metrics_store_entry_update(sentry, circ_n_proto_violation);
1272}
1273
1274/** Reset the global store and fill it with all the metrics from base_metrics
1275 * and their associated values.
1276 *
1277 * To pull this off, every metrics has a "fill" function that is called and in
1278 * charge of adding the metrics to the store, appropriate labels and finally
1279 * updating the value to report. */
1280static void
1281fill_store(void)
1282{
1283 /* Reset the current store, we are about to fill it with all the things. */
1284 metrics_store_reset(the_store);
1285
1286 /* Call the fill function for each metrics. */
1287 for (size_t i = 0; i < num_base_metrics; i++) {
1288 if (BUG(!base_metrics[i].fill_fn)) {
1289 continue;
1290 }
1291 base_metrics[i].fill_fn();
1292 }
1293}
1294
1295/** Return a list of all the relay metrics stores. This is the
1296 * function attached to the .get_metrics() member of the subsys_t. */
1297const smartlist_t *
1298relay_metrics_get_stores(void)
1299{
1300 /* We can't have the caller to free the returned list so keep it static,
1301 * simply update it. */
1302 static smartlist_t *stores_list = NULL;
1303
1304 /* We dynamically fill the store with all the metrics upon a request. The
1305 * reason for this is because the exposed metrics of a relay are often
1306 * internal counters in the fast path and thus we fetch the value when a
1307 * metrics port request arrives instead of keeping a local metrics store of
1308 * those values. */
1309 fill_store();
1310
1311 if (!stores_list) {
1312 stores_list = smartlist_new();
1313 smartlist_add(stores_list, the_store);
1314 }
1315
1316 return stores_list;
1317}
1318
1319/** Initialize the relay metrics. */
1320void
1321relay_metrics_init(void)
1322{
1323 if (BUG(the_store)) {
1324 return;
1325 }
1326 the_store = metrics_store_new();
1327}
1328
1329/** Free the relay metrics. */
1330void
1331relay_metrics_free(void)
1332{
1333 if (!the_store) {
1334 return;
1335 }
1336 /* NULL is set with this call. */
1337 metrics_store_free(the_store);
1338}
circ_n_proto_violation
uint64_t circ_n_proto_violation
Definition: circuitlist.c:165
cc_stats_circ_close_ss_cwnd_ma
double cc_stats_circ_close_ss_cwnd_ma
Definition: circuitlist.c:159
cc_stats_circ_close_cwnd_ma
double cc_stats_circ_close_cwnd_ma
Definition: circuitlist.c:157
circuit_get_global_list
smartlist_t * circuit_get_global_list(void)
Definition: circuitlist.c:713
circuitlist.h
Header file for circuitlist.c.
stats_n_destroy_cells_processed
uint64_t stats_n_destroy_cells_processed
Definition: command.c:74
command.h
Header file for command.c.
ARRAY_LENGTH
#define ARRAY_LENGTH(x)
Definition: compat_compiler.h:241
name
const char * name
Definition: config.c:2471
get_options
const or_options_t * get_options(void)
Definition: config.c:947
config.h
Header file for config.c.
congestion_control_get_num_clock_stalls
uint64_t congestion_control_get_num_clock_stalls(void)
Definition: congestion_control_common.c:143
congestion_control_get_num_rtt_reset
uint64_t congestion_control_get_num_rtt_reset(void)
Definition: congestion_control_common.c:136
cc_stats_circs_created
uint64_t cc_stats_circs_created
Definition: congestion_control_common.c:132
congestion_control_common.h
Public APIs for congestion control.
cc_stats_flow_num_xoff_sent
uint64_t cc_stats_flow_num_xoff_sent
Definition: congestion_control_flow.c:42
congestion_control_flow.h
APIs for stream flow control on congestion controlled circuits.
cc_stats_vegas_above_ss_cwnd_max
uint64_t cc_stats_vegas_above_ss_cwnd_max
Definition: congestion_control_vegas.c:91
cc_stats_vegas_above_delta
uint64_t cc_stats_vegas_above_delta
Definition: congestion_control_vegas.c:89
cc_stats_vegas_exit_ss_cwnd_ma
double cc_stats_vegas_exit_ss_cwnd_ma
Definition: congestion_control_vegas.c:73
congestion_control_vegas.h
Private-ish APIs for the TOR_VEGAS congestion control algorithm.
conn_type_to_string
const char * conn_type_to_string(int type)
Definition: connection.c:270
connection.h
Header file for connection.c.
tor_llround
int64_t tor_llround(double d)
Definition: fp.c:46
fp.h
Header for fp.c.
hs_dos_get_intro2_rejected_count
uint64_t hs_dos_get_intro2_rejected_count(void)
Definition: hs_dos.c:219
hs_dos.h
Header file containing denial of service defenses for the HS subsystem for all versions.
get_bytes_read
uint64_t get_bytes_read(void)
Definition: mainloop.c:455
get_bytes_written
uint64_t get_bytes_written(void)
Definition: mainloop.c:465
mainloop.h
Header file for mainloop.c.
malloc.h
Headers for util_malloc.c.
tor_free
#define tor_free(p)
Definition: malloc.h:56
metrics_format_label
const char * metrics_format_label(const char *key, const char *value)
Definition: metrics_common.c:39
metrics_store_new
metrics_store_t * metrics_store_new(void)
Definition: metrics_store.c:74
metrics_store_add
metrics_store_entry_t * metrics_store_add(metrics_store_t *store, metrics_type_t type, const char *name, const char *help, size_t bucket_count, const int64_t *buckets)
Definition: metrics_store.c:109
metrics_store_reset
void metrics_store_reset(metrics_store_t *store)
Definition: metrics_store.c:152
metrics_store.h
Header for lib/metrics/metrics_store.c.
metrics_store_entry_update
void metrics_store_entry_update(metrics_store_entry_t *entry, const int64_t value)
Definition: metrics_store_entry.c:79
metrics_store_entry_add_label
void metrics_store_entry_add_label(metrics_store_entry_t *entry, const char *label)
Definition: metrics_store_entry.c:223
node_st.h
Node information structure.
node_get_by_id
const node_t * node_get_by_id(const char *identity_digest)
Definition: nodelist.c:226
nodelist.h
Header file for nodelist.c.
or.h
Master header file for Tor-specific functionality.
oom_stats_n_bytes_removed_dns
uint64_t oom_stats_n_bytes_removed_dns
Definition: relay.c:2854
stats_n_circ_max_cell_reached
uint64_t stats_n_circ_max_cell_reached
Definition: relay.c:144
relay_command_to_string
const char * relay_command_to_string(uint8_t command)
Definition: relay.c:533
relay.h
Header file for relay.c.
fill_oom_values
static void fill_oom_values(void)
Definition: relay_metrics.c:1037
relay_metrics_get_stores
const smartlist_t * relay_metrics_get_stores(void)
Definition: relay_metrics.c:1298
fill_traffic_values
static void fill_traffic_values(void)
Definition: relay_metrics.c:384
fill_store
static void fill_store(void)
Definition: relay_metrics.c:1281
fill_relay_drop_cell
static void fill_relay_drop_cell(void)
Definition: relay_metrics.c:1250
fill_streams_values
static void fill_streams_values(void)
Definition: relay_metrics.c:732
fill_tcp_exhaustion_values
static void fill_tcp_exhaustion_values(void)
Definition: relay_metrics.c:847
fill_relay_circ_proto_violation
static void fill_relay_circ_proto_violation(void)
Definition: relay_metrics.c:1263
fill_dns_query_values
static void fill_dns_query_values(void)
Definition: relay_metrics.c:936
fill_onionskins_values
static void fill_onionskins_values(void)
Definition: relay_metrics.c:1005
fill_dos_values
static void fill_dos_values(void)
Definition: relay_metrics.c:404
fill_dns_error_values
static void fill_dns_error_values(void)
Definition: relay_metrics.c:875
fill_conn_gauge_values
static void fill_conn_gauge_values(void)
Definition: relay_metrics.c:815
fill_conn_counter_values
static void fill_conn_counter_values(void)
Definition: relay_metrics.c:771
relay_metrics_init
void relay_metrics_init(void)
Definition: relay_metrics.c:1321
fill_signing_cert_expiry
static void fill_signing_cert_expiry(void)
Definition: relay_metrics.c:1070
fill_single_stream_value
static void fill_single_stream_value(metrics_store_entry_t *sentry, uint8_t cmd)
Definition: relay_metrics.c:723
fill_single_connection_value
static void fill_single_connection_value(metrics_store_entry_t *sentry, unsigned int conn_type, const char *direction, const char *state, int socket_family, uint64_t value)
Definition: relay_metrics.c:751
fill_circuits_values
static void fill_circuits_values(void)
Definition: relay_metrics.c:289
fill_global_bw_limit_values
static void fill_global_bw_limit_values(void)
Definition: relay_metrics.c:965
fill_cc_counters_values
static void fill_cc_counters_values(void)
Definition: relay_metrics.c:471
relay_metrics_free
void relay_metrics_free(void)
Definition: relay_metrics.c:1331
af_to_string
static const char * af_to_string(const int af)
Definition: relay_metrics.c:273
fill_relay_destroy_cell
static void fill_relay_destroy_cell(void)
Definition: relay_metrics.c:1236
fill_relay_flags
static void fill_relay_flags(void)
Definition: relay_metrics.c:304
handshake_type_to_str
static const char * handshake_type_to_str(const uint16_t type)
Definition: relay_metrics.c:253
base_metrics
static const relay_metrics_entry_t base_metrics[]
Definition: relay_metrics.c:75
fill_cc_gauges_values
static void fill_cc_gauges_values(void)
Definition: relay_metrics.c:562
fill_socket_values
static void fill_socket_values(void)
Definition: relay_metrics.c:986
the_store
static metrics_store_t * the_store
Definition: relay_metrics.c:249
relay_metrics.h
Header for feature/relay/relay_metrics.c.
RELAY_METRICS_CC_GAUGES
@ RELAY_METRICS_CC_GAUGES
Definition: relay_metrics.h:41
RELAY_METRICS_NUM_GLOBAL_RW_LIMIT
@ RELAY_METRICS_NUM_GLOBAL_RW_LIMIT
Definition: relay_metrics.h:25
RELAY_METRICS_NUM_EST_REND
@ RELAY_METRICS_NUM_EST_REND
Definition: relay_metrics.h:53
RELAY_METRICS_NUM_STREAMS
@ RELAY_METRICS_NUM_STREAMS
Definition: relay_metrics.h:37
RELAY_METRICS_NUM_CIRCUITS
@ RELAY_METRICS_NUM_CIRCUITS
Definition: relay_metrics.h:49
RELAY_METRICS_NUM_TCP_EXHAUSTION
@ RELAY_METRICS_NUM_TCP_EXHAUSTION
Definition: relay_metrics.h:31
RELAY_METRICS_NUM_SOCKETS
@ RELAY_METRICS_NUM_SOCKETS
Definition: relay_metrics.h:23
RELAY_METRICS_NUM_INTRO1_CELLS
@ RELAY_METRICS_NUM_INTRO1_CELLS
Definition: relay_metrics.h:57
RELAY_METRICS_NUM_DOS
@ RELAY_METRICS_NUM_DOS
Definition: relay_metrics.h:43
RELAY_METRICS_CONN_COUNTERS
@ RELAY_METRICS_CONN_COUNTERS
Definition: relay_metrics.h:33
RELAY_METRICS_CC_COUNTERS
@ RELAY_METRICS_CC_COUNTERS
Definition: relay_metrics.h:39
RELAY_METRICS_CONN_GAUGES
@ RELAY_METRICS_CONN_GAUGES
Definition: relay_metrics.h:35
RELAY_METRICS_CIRC_DESTROY_CELL
@ RELAY_METRICS_CIRC_DESTROY_CELL
Definition: relay_metrics.h:61
RELAY_METRICS_NUM_ONIONSKINS
@ RELAY_METRICS_NUM_ONIONSKINS
Definition: relay_metrics.h:21
RELAY_METRICS_NUM_DNS
@ RELAY_METRICS_NUM_DNS
Definition: relay_metrics.h:27
RELAY_METRICS_RELAY_FLAGS
@ RELAY_METRICS_RELAY_FLAGS
Definition: relay_metrics.h:47
RELAY_METRICS_SIGNING_CERT_EXPIRY
@ RELAY_METRICS_SIGNING_CERT_EXPIRY
Definition: relay_metrics.h:51
RELAY_METRICS_NUM_EST_INTRO
@ RELAY_METRICS_NUM_EST_INTRO
Definition: relay_metrics.h:55
RELAY_METRICS_NUM_DNS_ERRORS
@ RELAY_METRICS_NUM_DNS_ERRORS
Definition: relay_metrics.h:29
RELAY_METRICS_NUM_OOM_BYTES
@ RELAY_METRICS_NUM_OOM_BYTES
Definition: relay_metrics.h:19
RELAY_METRICS_NUM_TRAFFIC
@ RELAY_METRICS_NUM_TRAFFIC
Definition: relay_metrics.h:45
RELAY_METRICS_CIRC_DROP_CELL
@ RELAY_METRICS_CIRC_DROP_CELL
Definition: relay_metrics.h:65
RELAY_METRICS_NUM_REND1_CELLS
@ RELAY_METRICS_NUM_REND1_CELLS
Definition: relay_metrics.h:59
RELAY_METRICS_CIRC_PROTO_VIOLATION
@ RELAY_METRICS_CIRC_PROTO_VIOLATION
Definition: relay_metrics.h:63
rep_hist_get_drop_cell_received_count
uint64_t rep_hist_get_drop_cell_received_count(void)
Definition: rephist.c:3032
rep_hist_get_conn_created
uint64_t rep_hist_get_conn_created(bool from_listener, unsigned int type, int af)
Definition: rephist.c:1777
rep_hist_get_n_dns_request
uint64_t rep_hist_get_n_dns_request(int type)
Definition: rephist.c:358
rep_hist_get_conn_rejected
uint64_t rep_hist_get_conn_rejected(unsigned int type, int af)
Definition: rephist.c:1809
rep_hist_get_circuit_n_handshake_assigned
uint64_t rep_hist_get_circuit_n_handshake_assigned(uint16_t type)
Definition: rephist.c:2423
rep_hist_get_conn_opened
uint64_t rep_hist_get_conn_opened(bool from_listener, unsigned int type, int af)
Definition: rephist.c:1793
rep_hist_get_n_dns_error
uint64_t rep_hist_get_n_dns_error(int type, uint8_t error)
Definition: rephist.c:317
rep_hist_get_n_read_limit_reached
uint64_t rep_hist_get_n_read_limit_reached(void)
Definition: rephist.c:461
rep_hist_get_n_tcp_exhaustion
uint64_t rep_hist_get_n_tcp_exhaustion(void)
Definition: rephist.c:586
rep_hist_get_circuit_n_handshake_dropped
uint64_t rep_hist_get_circuit_n_handshake_dropped(uint16_t type)
Definition: rephist.c:2430
rep_hist_get_exit_stream_seen
uint64_t rep_hist_get_exit_stream_seen(unsigned int cmd)
Definition: rephist.c:1676
rep_hist_get_n_write_limit_reached
uint64_t rep_hist_get_n_write_limit_reached(void)
Definition: rephist.c:468
rephist.h
Header file for rephist.c.
router_get_my_id_digest
const uint8_t * router_get_my_id_digest(void)
Definition: router.c:1783
router.h
Header file for router.c.
routerkeys.h
Header for routerkeys.c.
routerstatus_st.h
Routerstatus (consensus entry) structure.
smartlist.h
Header for smartlist.c.
smartlist_new
smartlist_t * smartlist_new(void)
Definition: smartlist_core.c:26
smartlist_add
void smartlist_add(smartlist_t *sl, void *element)
Definition: smartlist_core.c:117
get_max_sockets
int get_max_sockets(void)
Definition: socket.c:98
get_n_open_sockets
int get_n_open_sockets(void)
Definition: socket.c:440
metrics_store_t
Definition: metrics_store.c:25
node_t
Definition: node_st.h:34
relay_metrics_entry_t
Definition: relay_metrics.h:69
routerstatus_t::is_sybil
unsigned int is_sybil
Definition: routerstatus_st.h:62
routerstatus_t::is_hs_dir
unsigned int is_hs_dir
Definition: routerstatus_st.h:55
routerstatus_t::is_possible_guard
unsigned int is_possible_guard
Definition: routerstatus_st.h:49
routerstatus_t::is_stable
unsigned int is_stable
Definition: routerstatus_st.h:38
routerstatus_t::is_flagged_running
unsigned int is_flagged_running
Definition: routerstatus_st.h:44
routerstatus_t::is_exit
unsigned int is_exit
Definition: routerstatus_st.h:37
routerstatus_t::is_authority
unsigned int is_authority
Definition: routerstatus_st.h:36
routerstatus_t::is_fast
unsigned int is_fast
Definition: routerstatus_st.h:39
smartlist_t
Definition: smartlist_core.h:26
tor_cert_t
Definition: torcert.h:31
tor_cert_t::valid_until
time_t valid_until
Definition: torcert.h:38
torcert.h
Header for torcert.c.
util_bug.h
Macros to manage assertions, fatal and non-fatal.
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