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/*
* Copyright (c) 2023-2024 Attila Szakacs <attila.szakacs@axoflow.com>
* Copyright (c) 2024 Balazs Scheidler <balazs.scheidler@axoflow.com>
* Copyright (c) 2024 László Várady
* Copyright (c) 2024 Axoflow
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "dyn-metrics-cache.h"
#include "syslog-ng.h"
#include "apphook.h"
#include "tls-support.h"
TLS_BLOCK_START
{
DynMetricsStore *metrics_cache;
}
TLS_BLOCK_END;
#define metrics_cache __tls_deref(metrics_cache)
static DynMetricsStore *global_metrics_cache;
static GMutex global_metrics_cache_lock;
static void
_sync_with_global_cache(DynMetricsStore *store)
{
g_mutex_lock(&global_metrics_cache_lock);
dyn_metrics_store_merge(global_metrics_cache, store);
g_mutex_unlock(&global_metrics_cache_lock);
}
static void
_purge_global_cache(gint type, gpointer c)
{
g_mutex_lock(&global_metrics_cache_lock);
dyn_metrics_store_reset(global_metrics_cache);
g_mutex_unlock(&global_metrics_cache_lock);
}
static void
_init_tls_cache(gpointer user_data)
{
g_assert(!metrics_cache);
metrics_cache = dyn_metrics_store_new();
}
static void
_deinit_tls_cache(gpointer user_data)
{
_sync_with_global_cache(metrics_cache);
dyn_metrics_store_free(metrics_cache);
}
DynMetricsStore *
dyn_metrics_cache(void)
{
return metrics_cache;
}
void
dyn_metrics_cache_global_init(void)
{
g_assert(!global_metrics_cache);
g_mutex_init(&global_metrics_cache_lock);
global_metrics_cache = dyn_metrics_store_new();
register_application_thread_init_hook(_init_tls_cache, NULL);
register_application_thread_deinit_hook(_deinit_tls_cache, NULL);
register_application_hook(AH_CONFIG_CHANGED, _purge_global_cache, NULL, AHM_RUN_REPEAT);
_init_tls_cache(NULL);
}
void
dyn_metrics_cache_global_deinit(void)
{
_deinit_tls_cache(NULL);
dyn_metrics_store_free(global_metrics_cache);
g_mutex_clear(&global_metrics_cache_lock);
}
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