// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_RRD_H
#define NETDATA_RRD_H 1
#ifdef __cplusplus
extern "C" {
#endif
// non-existing structs instead of voids
// to enable type checking at compile time
typedef struct storage_instance STORAGE_INSTANCE;
typedef struct storage_metric_handle STORAGE_METRIC_HANDLE;
typedef struct storage_alignment STORAGE_METRICS_GROUP;
// forward typedefs
typedef struct rrdhost RRDHOST;
typedef struct rrddim RRDDIM;
typedef struct rrdset RRDSET;
typedef struct rrdcalc RRDCALC;
typedef struct rrdcalctemplate RRDCALCTEMPLATE;
typedef struct alarm_entry ALARM_ENTRY;
typedef struct rrdfamily_acquired RRDFAMILY_ACQUIRED;
typedef struct rrdvar_acquired RRDVAR_ACQUIRED;
typedef struct rrdsetvar_acquired RRDSETVAR_ACQUIRED;
typedef struct rrdcalc_acquired RRDCALC_ACQUIRED;
typedef struct rrdhost_acquired RRDHOST_ACQUIRED;
typedef struct rrdset_acquired RRDSET_ACQUIRED;
typedef struct rrddim_acquired RRDDIM_ACQUIRED;
typedef struct ml_host ml_host_t;
typedef struct ml_chart ml_chart_t;
typedef struct ml_dimension ml_dimension_t;
typedef enum __attribute__ ((__packed__)) {
QUERY_SOURCE_UNKNOWN = 0,
QUERY_SOURCE_API_DATA,
QUERY_SOURCE_API_BADGE,
QUERY_SOURCE_API_WEIGHTS,
QUERY_SOURCE_HEALTH,
QUERY_SOURCE_ML,
QUERY_SOURCE_UNITTEST,
} QUERY_SOURCE;
typedef enum __attribute__ ((__