relay: Code and objects to initialize metrics store

Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet 2021-04-15 12:46:23 -04:00
parent 0cf25fd3a5
commit bdde4579c2
2 changed files with 31 additions and 0 deletions

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@ -17,6 +17,13 @@
#include "feature/relay/relay_metrics.h"
/** The base metrics that is a static array of metrics added to the metrics
* store.
*
* The key member MUST be also the index of the entry in the array. */
static const relay_metrics_entry_t base_metrics[] = {};
static const size_t num_base_metrics = ARRAY_LENGTH(base_metrics);
/** The only and single store of all the relay metrics. */
static metrics_store_t *the_store;

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@ -10,6 +10,30 @@
#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);