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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_STORAGEENGINEAPI_H
#define NETDATA_STORAGEENGINEAPI_H
#include "rrd.h"
typedef struct storage_engine STORAGE_ENGINE;
// ------------------------------------------------------------------------
// function pointers for all APIs provided by a storge engine
typedef struct storage_engine_api {
STORAGE_METRIC_HANDLE *(*init)(RRDDIM *rd, STORAGE_INSTANCE *instance);
void (*free)(STORAGE_METRIC_HANDLE *);
struct rrddim_collect_ops collect_ops;
struct rrddim_query_ops query_ops;
} STORAGE_ENGINE_API;
struct storage_engine {
RRD_MEMORY_MODE id;
const char* name;
STORAGE_ENGINE_API api;
};
extern STORAGE_ENGINE* storage_engine_get(RRD_MEMORY_MODE mmode);
extern STORAGE_ENGINE* storage_engine_find(const char* name);
// Iterator over existing engines
extern STORAGE_ENGINE* storage_engine_foreach_init();
extern STORAGE_ENGINE* storage_engine_foreach_next(STORAGE_ENGINE* it);
#endif
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