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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"

#ifdef RELAY_METRICS_ENTRY_PRIVATE

/** Metrics key for each reported metrics. This key is also used as an index in
 * the base_metrics array. */
typedef enum {
  /* XXX So code compiles. */
  PLACEHOLDER = 0,
} 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;
} relay_metrics_entry_t;

#endif /* RELAY_METRICS_ENTRY_PRIVATE */

/* 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) */