mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-24 04:13:28 +01:00
relay: For metrics, don't report DNS errors by query type
This is due to the libevent bug https://github.com/libevent/libevent/issues/1219 that fails to return back the DNS record type on error. And so, the MetricsPort now only reports the errors as a global counter and not a per record type. Closes #40490 Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
parent
7a8108ea87
commit
e7abab8782
5
changes/ticket40490
Normal file
5
changes/ticket40490
Normal file
@ -0,0 +1,5 @@
|
||||
o Major bugfix (relay, metrics):
|
||||
- On the MetricsPort, the DNS error statistics are not reported by record
|
||||
type ("record=...") anymore due to a libevent bug
|
||||
(https://github.com/libevent/libevent/issues/1219). Fixes bug 40490;
|
||||
bugfix on 0.4.7.1-alpha.
|
@ -166,21 +166,24 @@ fill_dns_error_values(void)
|
||||
static const size_t num_errors = ARRAY_LENGTH(errors);
|
||||
|
||||
for (size_t i = 0; i < num_dns_types; i++) {
|
||||
/* NOTE: Disable the record type label until libevent is fixed. */
|
||||
#if 0
|
||||
/* Dup the label because metrics_format_label() returns a pointer to a
|
||||
* string on the stack and we need that label for all metrics. */
|
||||
char *record_label =
|
||||
tor_strdup(metrics_format_label("record", dns_types[i].name));
|
||||
#endif
|
||||
|
||||
for (size_t j = 0; j < num_errors; j++) {
|
||||
sentry = metrics_store_add(the_store, rentry->type, rentry->name,
|
||||
rentry->help);
|
||||
metrics_store_entry_add_label(sentry, record_label);
|
||||
//metrics_store_entry_add_label(sentry, record_label);
|
||||
metrics_store_entry_add_label(sentry,
|
||||
metrics_format_label("reason", errors[j].name));
|
||||
metrics_store_entry_update(sentry,
|
||||
rep_hist_get_n_dns_error(dns_types[i].type, errors[j].key));
|
||||
}
|
||||
tor_free(record_label);
|
||||
//tor_free(record_label);
|
||||
}
|
||||
}
|
||||
|
||||
@ -192,6 +195,8 @@ fill_dns_query_values(void)
|
||||
const relay_metrics_entry_t *rentry =
|
||||
&base_metrics[RELAY_METRICS_NUM_DNS];
|
||||
|
||||
/* NOTE: Disable the record type label until libevent is fixed (#40490). */
|
||||
#if 0
|
||||
for (size_t i = 0; i < num_dns_types; i++) {
|
||||
/* Dup the label because metrics_format_label() returns a pointer to a
|
||||
* string on the stack and we need that label for all metrics. */
|
||||
@ -204,6 +209,11 @@ fill_dns_query_values(void)
|
||||
rep_hist_get_n_dns_request(dns_types[i].type));
|
||||
tor_free(record_label);
|
||||
}
|
||||
#endif
|
||||
|
||||
sentry = metrics_store_add(the_store, rentry->type, rentry->name,
|
||||
rentry->help);
|
||||
metrics_store_entry_update(sentry, rep_hist_get_n_dns_request(0));
|
||||
}
|
||||
|
||||
/** Fill function for the RELAY_METRICS_NUM_GLOBAL_RW_LIMIT metrics. */
|
||||
|
@ -296,12 +296,29 @@ typedef struct {
|
||||
uint64_t stats_n_request;
|
||||
} dns_stats_t;
|
||||
|
||||
/* This is disabled because of the libevent bug where on error we don't get the
|
||||
* DNS query type back. Once it is fixed, we can re-enable this. */
|
||||
#if 0
|
||||
/** DNS statistics store for each DNS record type for which tor supports only
|
||||
* three at the moment: A, PTR and AAAA. */
|
||||
static dns_stats_t dns_A_stats;
|
||||
static dns_stats_t dns_PTR_stats;
|
||||
static dns_stats_t dns_AAAA_stats;
|
||||
#endif
|
||||
|
||||
/** DNS query statistics store. It covers all type of queries. */
|
||||
static dns_stats_t dns_all_stats;
|
||||
|
||||
/** Return the point to the DNS statistics store. Ignore the type for now
|
||||
* because of a libevent problem. */
|
||||
static inline dns_stats_t *
|
||||
get_dns_stats_by_type(const int type)
|
||||
{
|
||||
(void) type;
|
||||
return &dns_all_stats;
|
||||
}
|
||||
|
||||
#if 0
|
||||
/** From a libevent record type, return a pointer to the corresponding DNS
|
||||
* statistics store. NULL is returned if the type is unhandled. */
|
||||
static inline dns_stats_t *
|
||||
@ -318,6 +335,7 @@ get_dns_stats_by_type(const int type)
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/** Assess the DNS timeout errors and if we have enough to trigger a general
|
||||
* overload. */
|
||||
|
Loading…
Reference in New Issue
Block a user