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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_RRDVAR_H
#define NETDATA_RRDVAR_H 1
#include "libnetdata/libnetdata.h"
extern int rrdvar_compare(void *a, void *b);
typedef enum rrdvar_type {
RRDVAR_TYPE_CALCULATED = 1,
RRDVAR_TYPE_TIME_T = 2,
RRDVAR_TYPE_COLLECTED = 3,
RRDVAR_TYPE_TOTAL = 4,
RRDVAR_TYPE_INT = 5
} RRDVAR_TYPE;
typedef enum rrdvar_options {
RRDVAR_OPTION_DEFAULT = 0,
RRDVAR_OPTION_ALLOCATED = (1 << 0), // the value ptr is allocated (not a reference)
RRDVAR_OPTION_CUSTOM_HOST_VAR = (1 << 1), // this is a custom host variable, not associated with a dimension
RRDVAR_OPTION_CUSTOM_CHART_VAR = (1 << 2), // this is a custom chart variable, not associated with a dimension
RRDVAR_OPTION_RRDCALC_LOCAL_VAR = (1 << 3), // this is a an alarm variable, attached to a chart
RRDVAR_OPTION_RRDCALC_FAMILY_VAR = (1 << 4), // this is a an alarm variable, attached to a family
RRDVAR_OPTION_RRDCALC_HOST_CHARTID_VAR = (1 << 5), // this is a an alarm variable, attached to the host, using the chart id
RRDVAR_OPTION_RRDCALC_HOST_CHARTNAME_VAR = (1 << 6), // this is a an alarm variable, attached to the host, using the chart name
} RRDVAR_OPTIONS;
// the variables as stored in the variables indexes
// there are 3 indexes:
// 1. at each chart (RRDSET.rrdvar_root_index)
// 2. at each context (RRDFAMILY.rrdvar_root_index)
// 3. at each host (RRDHOST.rrdvar_root_index)
struct rrdvar {
avl_t avl;
char *name;
uint32_t hash;
RRDVAR_TYPE type;
RRDVAR_OPTIONS options;
void *value;
time_t last_updated;
};
#define RRDVAR_MAX_LENGTH 1024
extern int rrdvar_fix_name(char *variable);
#include "rrd.h"
extern RRDVAR *rrdvar_custom_host_variable_create(RRDHOST *host, const char *name);
extern void rrdvar_custom_host_variable_set(RRDHOST *host, RRDVAR *rv, calculated_number value);
extern int foreach_host_variable_callback(RRDHOST *host, int (*callback)(RRDVAR *rv, void *data), void *data);
extern void rrdvar_free_remaining_variables(RRDHOST *host, avl_tree_lock *tree_lock);
extern int rrdvar_callback_for_all_host_variables(RRDHOST *host, int (*callback)(void *rrdvar, void *data), void *data);
extern calculated_number rrdvar2number(RRDVAR *rv);
extern RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, RRDVAR_TYPE type, RRDVAR_OPTIONS options, void *value);
extern void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv);
#endif //NETDATA_RRDVAR_H
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