4329687e8e9bf54740516cf5f3774743d78e16bf
1 /**
2 * collectd - src/varnish.c
3 * Copyright (C) 2010 Jerome Renard
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Authors:
19 * Jerome Renard <jerome.renard@gmail.com>
20 **/
22 #include "collectd.h"
23 #include "common.h"
24 #include "plugin.h"
26 #include <varnish/varnishapi.h>
28 #define USER_CONFIG_INIT {0, 0, 0}
29 #define SET_MONITOR_FLAG(name, flag, value) if((strcasecmp(name, key) == 0) && IS_TRUE(value)) user_config.flag = 1
31 /* {{{ user_config_s */
32 struct user_config_s {
33 int monitor_cache;
34 int monitor_connections;
35 int monitor_esi;
36 };
38 typedef struct user_config_s user_config_t; /* }}} */
40 /* {{{ Configuration directives */
41 static user_config_t user_config = USER_CONFIG_INIT;
43 static const char *config_keys[] =
44 {
45 "MonitorCache",
46 "MonitorConnections",
47 "MonitorESI"
48 };
50 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys); /* }}} */
52 static int varnish_config(const char *key, const char *value) /* {{{ */
53 {
54 SET_MONITOR_FLAG("MonitorCache", monitor_cache, value);
55 SET_MONITOR_FLAG("MonitorConnections", monitor_connections, value);
56 SET_MONITOR_FLAG("MonitorESI", monitor_esi, value);
58 return (0);
59 } /* }}} */
61 static void varnish_submit(const char *type, const char *type_instance, gauge_t value) /* {{{ */
62 {
63 value_t values[1];
64 value_list_t vl = VALUE_LIST_INIT;
66 values[0].gauge = value;
67 vl.values_len = 1;
68 vl.values = values;
70 sstrncpy(vl.host , hostname_g , sizeof(vl.host));
71 sstrncpy(vl.plugin , "varnish" , sizeof(vl.plugin));
72 sstrncpy(vl.type , type , sizeof(vl.type));
73 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
75 plugin_dispatch_values(&vl);
76 } /* }}} */
78 static void varnish_monitor(struct varnish_stats *VSL_stats) /* {{{ */
79 {
80 if(user_config.monitor_cache == 1)
81 {
82 varnish_submit("varnish_cache_ratio", "cache_hit" , VSL_stats->cache_hit);
83 varnish_submit("varnish_cache_ratio", "cache_miss" , VSL_stats->cache_miss);
84 varnish_submit("varnish_cache_ratio", "cache_hitpass", VSL_stats->cache_hitpass);
85 }
87 if(user_config.monitor_connections == 1)
88 {
89 varnish_submit("varnish_connections", "client_connections-accepted", VSL_stats->client_conn);
90 varnish_submit("varnish_connections", "client_connections-dropped" , VSL_stats->client_drop);
91 varnish_submit("varnish_connections", "client_connections-received", VSL_stats->client_req);
92 }
94 if(user_config.monitor_esi == 1)
95 {
96 varnish_submit("varnish_esi", "esi_parsed", VSL_stats->esi_parse);
97 varnish_submit("varnish_esi", "esi_errors", VSL_stats->esi_errors);
98 }
99 } /* }}} */
101 static int varnish_read(void) /* {{{ */
102 {
103 struct varnish_stats *VSL_stats;
104 const char *varnish_instance_name = NULL;
106 if ((VSL_stats = VSL_OpenStats(varnish_instance_name)) == NULL)
107 {
108 ERROR("Varnish plugin : unable to load statistics");
110 return (-1);
111 }
113 varnish_monitor(VSL_stats);
115 return (0);
116 } /* }}} */
118 void module_register (void) /* {{{ */
119 {
120 plugin_register_config("varnish", varnish_config, config_keys, config_keys_num);
121 plugin_register_read("varnish", varnish_read);
122 } /* }}} */
124 /* vim: set sw=8 noet fdm=marker : */