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/* Copyright (c) 2021, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* @file relay_metrics.h
* @brief Header for feature/relay/relay_metrics.c
**/
#ifndef TOR_FEATURE_RELAY_RELAY_METRICS_H
#define TOR_FEATURE_RELAY_RELAY_METRICS_H
#include "lib/container/smartlist.h"
#include "lib/metrics/metrics_common.h"
/** Metrics key for each reported metrics. This key is also used as an index in
* the base_metrics array. */
typedef enum {
/** Number of OOM invocation. */
RELAY_METRICS_NUM_OOM_BYTES = 0,
/** Number of onionskines handled. */
RELAY_METRICS_NUM_ONIONSKINS = 1,
} relay_metrics_key_t;
/** The metadata of a relay metric. */
typedef struct relay_metrics_entry_t {
/* Metric key used as a static array index. */
relay_metrics_key_t key;
/* Metric type. */
metrics_type_t type;
/* Metrics output name. */
const char *name;
/* Metrics output help comment. */
const char *help;
/* Update value function. */
void (*fill_fn)(void);
} relay_metrics_entry_t;
/* Init. */
void relay_metrics_init(void);
void relay_metrics_free(void);
/* Accessors. */
const smartlist_t *relay_metrics_get_stores(void);
#endif /* !defined(TOR_FEATURE_RELAY_RELAY_METRICS_H) */
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