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/*
** Zabbix
** Copyright (C) 2001-2021 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
#include "valuecache_test.h"
void zbx_vc_set_mode(int mode)
{
vc_cache->mode = mode;
vc_cache->mode_time = time(NULL);
}
int zbx_vc_get_cached_values(zbx_uint64_t itemid, unsigned char value_type, zbx_vector_history_record_t *values)
{
zbx_vc_item_t *item;
int i;
zbx_vc_chunk_t *chunk;
if (NULL == (item = zbx_hashset_search(&vc_cache->items, &itemid)))
return FAIL;
if (NULL == item->head)
return SUCCEED;
for (chunk = item->tail; NULL != chunk; chunk = chunk->next)
{
for (i = chunk->first_value; i <= chunk->last_value; i++)
vc_history_record_vector_append(values, value_type, &chunk->slots[i]);
}
return SUCCEED;
}
int zbx_vc_precache_values(zbx_uint64_t itemid, int value_type, int seconds, int count, const zbx_timespec_t *ts)
{
zbx_vc_item_t *item;
int ret;
zbx_vector_history_record_t values;
/* add item to cache if necessary */
if (NULL == (item = (zbx_vc_item_t *)zbx_hashset_search(&vc_cache->items, &itemid)))
{
zbx_vc_item_t new_item = {.itemid = itemid, .value_type = value_type};
item = zbx_hashset_insert(&vc_cache->items, &new_item, sizeof(zbx_vc_item_t));
}
/* perform request to cache values */
zbx_history_record_vector_create(&values);
RDLOCK_CACHE;
ret = vch_item_get_values(item, &values, seconds, count, ts);
UNLOCK_CACHE;
zbx_vc_flush_stats();
zbx_history_record_vector_destroy(&values, value_type);
/* reset cache statistics */
vc_cache->hits = 0;
vc_cache->misses = 0;
return ret;
}
int zbx_vc_get_item_state(zbx_uint64_t itemid, int *status, int *active_range, int *values_total,
int *db_cached_from)
{
zbx_vc_item_t *item;
int ret = FAIL;
if (NULL != (item = (zbx_vc_item_t *)zbx_hashset_search(&vc_cache->items, &itemid)))
{
*status = item->status;
*active_range = item->active_range;
*values_total = item->values_total;
*db_cached_from = item->db_cached_from;
ret = SUCCEED;
}
return ret;
}
int zbx_vc_get_cache_state(int *mode, zbx_uint64_t *hits, zbx_uint64_t *misses)
{
if (NULL == vc_cache)
return FAIL;
*mode = vc_cache->mode;
*hits = vc_cache->hits;
*misses = vc_cache->misses;
return SUCCEED;
}
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