From 3f597527d7ca6c1d4ceb22e01d83a385342316c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Vavru=C5=A1a?= <marek.vavrusa@nic.cz>
Date: Mon, 13 Jul 2015 18:29:31 +0200
Subject: [PATCH] modules/stats: expose frequent queries LRU turnover
---
modules/stats/stats.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/modules/stats/stats.c b/modules/stats/stats.c
index 078ff7b12..a35cfd5e0 100644
--- a/modules/stats/stats.c
+++ b/modules/stats/stats.c
@@ -217,7 +217,7 @@ static char* stats_get(void *env, struct kr_module *module, const char *args)
struct stat_data *data = module->data;
/* Expecting CHAR_BIT to be 8, this is a safe bet */
- char *ret = malloc(3 * sizeof(ret) + 2);
+ char *ret = malloc(3 * sizeof(size_t) + 2);
if (!ret) {
return NULL;
}
@@ -305,6 +305,19 @@ static char* freq_list(void *env, struct kr_module *module, const char *args)
return ret;
}
+static char* freq_turnover(void *env, struct kr_module *module, const char *args)
+{
+ struct stat_data *data = module->data;
+ namehash_t *freq_table = data->frequent.names;
+ if (!freq_table) {
+ return NULL;
+ }
+ JsonNode *root = json_mknumber(freq_table->evictions);
+ char *ret = json_encode(root);
+ json_delete(root);
+ return ret;
+}
+
static char* freq_clear(void *env, struct kr_module *module, const char *args)
{
struct stat_data *data = module->data;
@@ -367,6 +380,7 @@ struct kr_prop *stats_props(void)
{ &stats_list, "list", "List observed metrics.", },
{ &freq_list, "queries", "List most frequent queries.", },
{ &freq_clear, "queries_clear", "Clear most frequent queries.", },
+ { &freq_turnover, "queries_turnover", "Turnover of the frequent queries.", },
{ NULL, NULL, NULL }
};
return prop_list;
--
GitLab