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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-store.h"
#include "stats/stats-cluster-single.h"
#include <string.h>
struct _DynMetricsStore
{
GHashTable *clusters;
GArray *label_buffers;
};
static StatsCluster *
_register_single_cluster_locked(StatsClusterKey *key, gint stats_level)
{
StatsCluster *cluster;
stats_lock();
{
StatsCounterItem *counter;
cluster = stats_register_dynamic_counter(stats_level, key, SC_TYPE_SINGLE_VALUE, &counter);
}
stats_unlock();
return cluster;
}
static void
_unregister_single_cluster_locked(StatsCluster *cluster)
{
stats_lock();
{
StatsCounterItem *counter = stats_cluster_single_get_counter(cluster);
stats_unregister_dynamic_counter(cluster, SC_TYPE_SINGLE_VALUE, &counter);
}
stats_unlock();
}
DynMetricsStore *
dyn_metrics_store_new(void)
{
DynMetricsStore *self = g_new0(DynMetricsStore, 1);
self->clusters = g_hash_table_new_full((GHashFunc) stats_cluster_key_hash,
(GEqualFunc) stats_cluster_key_equal,
NULL,
(GDestroyNotify) _unregister_single_cluster_locked);
self->label_buffers = g_array_new(FALSE, FALSE, sizeof(StatsClusterLabel));
return self;
}
void
dyn_metrics_store_free(DynMetricsStore *self)
{
g_hash_table_destroy(self->clusters);
g_array_free(self->label_buffers, TRUE);
g_free(self);
}
StatsCounterItem *
dyn_metrics_store_retrieve_counter(DynMetricsStore *self, StatsClusterKey *key, gint level)
{
StatsCluster *cluster = g_hash_table_lookup(self->clusters, key);
if (!cluster)
{
cluster = _register_single_cluster_locked(key, level);
if (cluster)
g_hash_table_insert(self->clusters, &cluster->key, cluster);
}
return stats_cluster_single_get_counter(cluster);
}
gboolean
dyn_metrics_store_remove_counter(DynMetricsStore *self, StatsClusterKey *key)
{
return g_hash_table_remove(self->clusters, key);
}
void
dyn_metrics_store_reset(DynMetricsStore *self)
{
g_hash_table_remove_all(self->clusters);
}
void
dyn_metrics_store_merge(DynMetricsStore *self, DynMetricsStore *other)
{
GHashTableIter iter;
g_hash_table_iter_init(&iter, other->clusters);
gpointer key, value;
while (g_hash_table_iter_next(&iter, &key, &value))
{
stats_cluster_track_counter(value, SC_TYPE_SINGLE_VALUE);
g_hash_table_insert(self->clusters, key, value);
}
}
void
dyn_metrics_store_reset_labels_cache(DynMetricsStore *self)
{
self->label_buffers = g_array_set_size(self->label_buffers, 0);
}
StatsClusterLabel *
dyn_metrics_store_cache_label(DynMetricsStore *self)
{
self->label_buffers = g_array_set_size(self->label_buffers, self->label_buffers->len + 1);
return &g_array_index(self->label_buffers, StatsClusterLabel, self->label_buffers->len - 1);
}
StatsClusterLabel *
dyn_metrics_store_get_cached_labels(DynMetricsStore *self)
{
return (StatsClusterLabel *) self->label_buffers->data;
}
guint
dyn_metrics_store_get_cached_labels_len(DynMetricsStore *self)
{
return self->label_buffers->len;
}
static gint
_label_cmp(StatsClusterLabel *lhs, StatsClusterLabel *rhs)
{
return strcmp(lhs->name, rhs->name);
}
void
dyn_metrics_store_sort_cached_labels(DynMetricsStore *self)
{
g_array_sort(self->label_buffers, (GCompareFunc) _label_cmp);
}
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