/*****************************************************************************\
 *  metrics plugin interface header
 *****************************************************************************
 *  Copyright (C) SchedMD LLC.
 *
 *  This file is part of Slurm, a resource management program.
 *  For details, see <https://slurm.schedmd.com/>.
 *  Please also read the included file: DISCLAIMER.
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\*****************************************************************************/

#ifndef _INTERFACES_METRICS_H
#define _INTERFACES_METRICS_H

#include "src/interfaces/data_parser.h"
#include "src/slurmctld/statistics.h"

typedef enum metrics_structs {
	METRICS_CTLD_JOBS,
	METRICS_CTLD_NODES,
	METRICS_CTLD_PARTS,
	METRICS_CTLD_SCHED,
	METRICS_CTLD_UA,
} metrics_structs_t;

typedef struct metric_keyval {
	char *key;
	char *val;
} metric_keyval_t;

typedef struct metric_set {
	void *arg; /* actual metrics data provided by the specific plugin */
	int plugin_id;
	const char *plugin_type; /* ptr to plugin plugin_type - do not xfree */
} metric_set_t;

typedef struct metric {
	int attr; /* Custom Attributes */
	void *data; /* Data */
	char *desc; /* Metric description */
	void *id; /* Plugin custom identifier of this metric */
	metric_keyval_t **keyval; /* Array of key-values strings, last element
				   * is NULL=NULL */
	char *name; /* Metric name */
	metric_set_t *set; /* Pointer to a metric set */
	data_parser_type_t type; /* Data type */
} metric_t;

extern metric_t *metrics_create_metric(metric_set_t *set,
				       data_parser_type_t type, void *data,
				       ssize_t sz_data, char *name, char *desc,
				       int attr, metric_keyval_t **kv);
extern void metrics_free_metric(metric_t *metric);
extern char *metrics_serialize_struct(metrics_structs_t t, void *st);

extern int metrics_g_init(void);
extern void metrics_g_fini(void);
extern int metrics_g_dump(metric_set_t *set, char **buf);
extern int metrics_g_free_set(metric_set_t *set);
extern metric_set_t *metrics_g_parse_jobs_metrics(jobs_stats_t *s);
extern metric_set_t *metrics_g_parse_nodes_metrics(nodes_stats_t *s);
extern metric_set_t *metrics_g_parse_parts_metrics(partitions_stats_t *s);
extern metric_set_t *metrics_g_parse_sched_metrics(scheduling_stats_t *s);
extern metric_set_t *metrics_g_parse_ua_metrics(users_accts_stats_t *s);
#endif