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/* Copyright (c) 2020-2021, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* @file hs_metrics.h
* @brief Header for feature/hs/hs_metrics.c
**/
#ifndef TOR_FEATURE_HS_HS_METRICS_H
#define TOR_FEATURE_HS_HS_METRICS_H
#include "lib/container/smartlist.h"
#include "lib/crypt_ops/crypto_ed25519.h"
#define HS_METRICS_ENTRY_PRIVATE
#include "feature/hs/hs_metrics_entry.h"
#include "feature/hs/hs_service.h"
/* Init and Free. */
void hs_metrics_service_init(hs_service_t *service);
void hs_metrics_service_free(hs_service_t *service);
/* Accessors. */
const smartlist_t *hs_metrics_get_stores(void);
/* Metrics Update. */
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 obs, bool reset);
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 obs, bool reset);
/** New introducion request received. */
#define hs_metrics_new_introduction(s) \
hs_metrics_update_by_service(HS_METRICS_NUM_INTRODUCTIONS, (s), \
0, NULL, 1, 0, false)
/** 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, 0, false)
/** 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), 0, false)
/** 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), 0, false)
/** 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, 0, false)
/** 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, 0, false)
/** 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, 0, false)
/** New rendezvous circuit being launched. */
#define hs_metrics_new_rdv(i) \
hs_metrics_update_by_ident(HS_METRICS_NUM_RDV, (i), 0, NULL, 1, 0, false)
/** Update depth of rendezvous pqueue any time new work is enqueued. */
#define hs_metrics_pow_pqueue_rdv(s, n) \
hs_metrics_update_by_service(HS_METRICS_POW_NUM_PQUEUE_RDV, (s), 0, \
NULL, (n), 0, true)
/** Update the suggested effort we include in proof-of-work state */
#define hs_metrics_pow_suggested_effort(s, n) \
hs_metrics_update_by_service(HS_METRICS_POW_SUGGESTED_EFFORT, (s), 0, \
NULL, (n), 0, true)
/** 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, 0, false)
/** 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, 0, false)
/** 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, false)
/** 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, false)
#endif /* !defined(TOR_FEATURE_HS_HS_METRICS_H) */
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