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metrics: Add HS service side circuit build time metrics.

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This adds 2 histogram metrics for hidden services:
* `tor_hs_rend_circ_build_time` - the rendezvous circuit build time in milliseconds
* `tor_hs_intro_circ_build_time` - the introduction circuit build time in milliseconds

The text representation representation of the new metrics looks like this:
```
# HELP tor_hs_rend_circ_build_time The rendezvous circuit build time in milliseconds
# TYPE tor_hs_rend_circ_build_time histogram
tor_hs_rend_circ_build_time_bucket{onion="<elided>",le="1000.00"} 2
tor_hs_rend_circ_build_time_bucket{onion="<elided>",le="5000.00"} 10
tor_hs_rend_circ_build_time_bucket{onion="<elided>",le="10000.00"} 10
tor_hs_rend_circ_build_time_bucket{onion="<elided>",le="30000.00"} 10
tor_hs_rend_circ_build_time_bucket{onion="<elided>",le="60000.00"} 10
tor_hs_rend_circ_build_time_bucket{onion="<elided>",le="+Inf"} 10
tor_hs_rend_circ_build_time_sum{onion="<elided>"} 10824
tor_hs_rend_circ_build_time_count{onion="<elided>"} 10
# HELP tor_hs_intro_circ_build_time The introduction circuit build time in milliseconds
# TYPE tor_hs_intro_circ_build_time histogram
tor_hs_intro_circ_build_time_bucket{onion="<elided>",le="1000.00"} 0
tor_hs_intro_circ_build_time_bucket{onion="<elided>",le="5000.00"} 6
tor_hs_intro_circ_build_time_bucket{onion="<elided>",le="10000.00"} 6
tor_hs_intro_circ_build_time_bucket{onion="<elided>",le="30000.00"} 6
tor_hs_intro_circ_build_time_bucket{onion="<elided>",le="60000.00"} 6
tor_hs_intro_circ_build_time_bucket{onion="<elided>",le="+Inf"} 6
tor_hs_intro_circ_build_time_sum{onion="<elided>"} 9843
tor_hs_intro_circ_build_time_count{onion="<elided>"} 6
```

Signed-off-by: Gabriela Moldovan <gabi@torproject.org>
This commit is contained in:
Gabriela Moldovan 2023-03-08 17:52:20 +00:00 committed by David Goulet
parent d1264d11c3
commit 1a60fa547f
7 changed files with 98 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
changes/ticket40757
View File

@ -1,3 +1,8 @@
o Minor features (metrics):
- Add support for histograms.
Part of ticket 40757.
o Minor features (hs, metrics):
- Add tor_hs_rend_circ_build_time and tor_hs_intro_circ_build_time
histograms to measure hidden service rend/intro circuit build time
durations.
Part of ticket 40757.

14
src/feature/hs/hs_metrics.c
View File

@ -68,6 +68,8 @@ add_metric_with_labels(hs_service_t *service, hs_metrics_key_t metric,
case HS_METRICS_NUM_ESTABLISHED_RDV: FALLTHROUGH;
case HS_METRICS_NUM_RDV: FALLTHROUGH;
case HS_METRICS_NUM_ESTABLISHED_INTRO: FALLTHROUGH;
case HS_METRICS_INTRO_CIRC_BUILD_TIME: FALLTHROUGH;
case HS_METRICS_REND_CIRC_BUILD_TIME: FALLTHROUGH;
default:
break;
}
@ -144,7 +146,7 @@ void
hs_metrics_update_by_service(const hs_metrics_key_t key,
const hs_service_t *service,
uint16_t port, const char *reason,
int64_t n)
int64_t n, int64_t obs)
{
tor_assert(service);
@ -165,7 +167,13 @@ hs_metrics_update_by_service(const hs_metrics_key_t key,
entry, metrics_format_label("port", port_to_str(port)))) &&
((!reason || metrics_store_entry_has_label(
entry, metrics_format_label("reason", reason))))) {
if (metrics_store_entry_is_histogram(entry)) {
metrics_store_hist_entry_update(entry, n, obs);
} else {
metrics_store_entry_update(entry, n);
}
break;
}
} SMARTLIST_FOREACH_END(entry);
@ -182,7 +190,7 @@ void
hs_metrics_update_by_ident(const hs_metrics_key_t key,
const ed25519_public_key_t *ident_pk,
const uint16_t port, const char *reason,
int64_t n)
int64_t n, int64_t obs)
{
hs_service_t *service;
@ -196,7 +204,7 @@ hs_metrics_update_by_ident(const hs_metrics_key_t key,
* service and thus the only way to know is to lookup the service. */
return;
}
hs_metrics_update_by_service(key, service, port, reason, n);
hs_metrics_update_by_service(key, service, port, reason, n, obs);
}
/** Return a list of all the onion service metrics stores. This is the

41
src/feature/hs/hs_metrics.h
View File

@ -27,58 +27,75 @@ const smartlist_t *hs_metrics_get_stores(void);
void hs_metrics_update_by_ident(const hs_metrics_key_t key,
const ed25519_public_key_t *ident_pk,
const uint16_t port, const char *reason,
int64_t n);
int64_t n, int64_t obs);
void hs_metrics_update_by_service(const hs_metrics_key_t key,
const hs_service_t *service,
uint16_t port, const char *reason,
int64_t n);
int64_t n, int64_t obs);
/** New introducion request received. */
#define hs_metrics_new_introduction(s) \
hs_metrics_update_by_service(HS_METRICS_NUM_INTRODUCTIONS, (s), 0, NULL, 1)
hs_metrics_update_by_service(HS_METRICS_NUM_INTRODUCTIONS, (s), 0, NULL, 1, \
0)
/** Introducion request rejected. */
#define hs_metrics_reject_intro_req(s, reason) \
hs_metrics_update_by_service(HS_METRICS_NUM_REJECTED_INTRO_REQ, (s), 0, \
(reason), 1)
(reason), 1, 0)
/** Number of bytes written to the application from the service. */
#define hs_metrics_app_write_bytes(i, port, n) \
hs_metrics_update_by_ident(HS_METRICS_APP_WRITE_BYTES, (i), (port), NULL, \
(n))
(n), 0)
/** Number of bytes read from the application to the service. */
#define hs_metrics_app_read_bytes(i, port, n) \
hs_metrics_update_by_ident(HS_METRICS_APP_READ_BYTES, (i), (port), NULL, (n))
hs_metrics_update_by_ident(HS_METRICS_APP_READ_BYTES, (i), (port), NULL, \
(n), 0)
/** Newly established rendezvous. This is called as soon as the circuit purpose
* is REND_JOINED which is when the RENDEZVOUS2 cell is sent. */
#define hs_metrics_new_established_rdv(s) \
hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_RDV, (s), 0, NULL, 1)
hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_RDV, (s), 0, NULL, \
1, 0)
/** New rendezvous circuit failure. */
#define hs_metrics_failed_rdv(i, reason) \
hs_metrics_update_by_ident(HS_METRICS_NUM_FAILED_RDV, (i), 0, (reason), 1)
hs_metrics_update_by_ident(HS_METRICS_NUM_FAILED_RDV, (i), 0, (reason), 1, 0)
/** Established rendezvous closed. This is called when the circuit in
* REND_JOINED state is marked for close. */
#define hs_metrics_close_established_rdv(i) \
hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_RDV, (i), 0, NULL, -1)
hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_RDV, (i), 0, NULL, \
-1, 0)
/** New rendezvous circuit being launched. */
#define hs_metrics_new_rdv(i) \
hs_metrics_update_by_ident(HS_METRICS_NUM_RDV, (i), 0, NULL, 1)
hs_metrics_update_by_ident(HS_METRICS_NUM_RDV, (i), 0, NULL, 1, 0)
/** New introduction circuit has been established. This is called when the
* INTRO_ESTABLISHED has been received by the service. */
#define hs_metrics_new_established_intro(s) \
hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_INTRO, (s), 0, \
NULL, 1)
NULL, 1, 0)
/** Established introduction circuit closes. This is called when
* INTRO_ESTABLISHED circuit is marked for close. */
#define hs_metrics_close_established_intro(i) \
hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_INTRO, (i), 0, NULL, \
-1)
-1, 0)
/** Record an introduction circuit build time duration. This is called
* when the INTRO_ESTABLISHED has been received by the service. */
#define hs_metrics_intro_circ_build_time(s, obs) \
hs_metrics_update_by_service(HS_METRICS_INTRO_CIRC_BUILD_TIME, (s), 0, \
NULL, 1, obs)
/** Record a rendezvous circuit build time duration. This is called as soon as
* the circuit purpose is REND_JOINED which is when the RENDEZVOUS2 cell is
* sent. */
#define hs_metrics_rdv_circ_build_time(s, obs) \
hs_metrics_update_by_service(HS_METRICS_REND_CIRC_BUILD_TIME, (s), 0, NULL, \
1, obs)
#endif /* !defined(TOR_FEATURE_HS_HS_METRICS_H) */

29
src/feature/hs/hs_metrics_entry.c
View File

@ -18,6 +18,19 @@
#include "feature/hs/hs_metrics_entry.h"
/* Histogram time buckets (in milliseconds). */
static const int64_t hs_metrics_circ_build_time_buckets[] =
{
1000, /* 1s */
5000, /* 5s */
10000, /* 10s */
30000, /* 30s */
60000 /* 60s */
};
static const size_t hs_metrics_circ_build_time_buckets_size =
ARRAY_LENGTH(hs_metrics_circ_build_time_buckets);
/** The base metrics that is a static array of metrics that are added to every
* single new stores.
*
@ -75,6 +88,22 @@ const hs_metrics_entry_t base_metrics[] =
.name = METRICS_NAME(hs_intro_rejected_intro_req_count),
.help = "Total number of rejected introduction circuits",
},
{
.key = HS_METRICS_INTRO_CIRC_BUILD_TIME,
.type = METRICS_TYPE_HISTOGRAM,
.name = METRICS_NAME(hs_intro_circ_build_time),
.buckets = hs_metrics_circ_build_time_buckets,
.bucket_count = hs_metrics_circ_build_time_buckets_size,
.help = "The introduction circuit build time in milliseconds",
},
{
.key = HS_METRICS_REND_CIRC_BUILD_TIME,
.type = METRICS_TYPE_HISTOGRAM,
.name = METRICS_NAME(hs_rend_circ_build_time),
.buckets = hs_metrics_circ_build_time_buckets,
.bucket_count = hs_metrics_circ_build_time_buckets_size,
.help = "The rendezvous circuit build time in milliseconds",
},
};
/** Size of base_metrics array that is number of entries. */

4
src/feature/hs/hs_metrics_entry.h
View File

@ -58,6 +58,10 @@ typedef enum {
HS_METRICS_NUM_ESTABLISHED_INTRO = 6,
/** Number of rejected introducton requests. */
HS_METRICS_NUM_REJECTED_INTRO_REQ = 7,
/** Introduction circuit build time in milliseconds. */
HS_METRICS_INTRO_CIRC_BUILD_TIME = 8,
/** Rendezvous circuit build time in milliseconds. */
HS_METRICS_REND_CIRC_BUILD_TIME = 9,
} hs_metrics_key_t;
/** The metadata of an HS metrics. */

11
src/feature/hs/hs_service.c
View File

@ -33,6 +33,7 @@
#include "lib/crypt_ops/crypto_ope.h"
#include "lib/crypt_ops/crypto_rand.h"
#include "lib/crypt_ops/crypto_util.h"
#include "lib/time/tvdiff.h"
#include "feature/hs/hs_circuit.h"
#include "feature/hs/hs_common.h"
@ -3412,6 +3413,11 @@ service_rendezvous_circ_has_opened(origin_circuit_t *circ)
* will even out the metric. */
if (TO_CIRCUIT(circ)->purpose == CIRCUIT_PURPOSE_S_REND_JOINED) {
hs_metrics_new_established_rdv(service);
struct timeval now;
tor_gettimeofday(&now);
int64_t duration = tv_mdiff(&TO_CIRCUIT(circ)->timestamp_began, &now);
hs_metrics_rdv_circ_build_time(service, duration);
}
goto done;
@ -3465,8 +3471,13 @@ service_handle_intro_established(origin_circuit_t *circ,
goto err;
}
struct timeval now;
tor_gettimeofday(&now);
int64_t duration = tv_mdiff(&TO_CIRCUIT(circ)->timestamp_began, &now);
/* Update metrics. */
hs_metrics_new_established_intro(service);
hs_metrics_intro_circ_build_time(service, duration);
log_info(LD_REND, "Successfully received an INTRO_ESTABLISHED cell "
"on circuit %u for service %s",

8
src/test/test_hs_metrics.c
View File

@ -40,7 +40,7 @@ test_metrics(void *arg)
/* Update entry by identifier. */
hs_metrics_update_by_ident(HS_METRICS_NUM_INTRODUCTIONS,
&service->keys.identity_pk, 0, NULL, 42);
&service->keys.identity_pk, 0, NULL, 42, 0);
/* Confirm the entry value. */
const smartlist_t *entries = metrics_store_get_all(service->metrics.store,
@ -53,14 +53,14 @@ test_metrics(void *arg)
/* Update entry by service now. */
hs_metrics_update_by_service(HS_METRICS_NUM_INTRODUCTIONS,
service, 0, NULL, 42);
service, 0, NULL, 42, 0);
tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 84);
const char *reason = HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY;
/* Update tor_hs_intro_rejected_intro_req_count */
hs_metrics_update_by_ident(HS_METRICS_NUM_REJECTED_INTRO_REQ,
&service->keys.identity_pk, 0, reason, 112);
&service->keys.identity_pk, 0, reason, 112, 0);
entries = metrics_store_get_all(service->metrics.store,
"tor_hs_intro_rejected_intro_req_count");
@ -75,7 +75,7 @@ test_metrics(void *arg)
/* Update tor_hs_intro_rejected_intro_req_count entry by service now. */
hs_metrics_update_by_service(HS_METRICS_NUM_REJECTED_INTRO_REQ, service, 0,
reason, 10);
reason, 10, 0);
tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 122);
done: