#include "collectd.h"
#include "common.h"
#include "plugin.h"
+#include "configfile.h"
#include <varnish/varnishapi.h>
/* {{{ user_config_s */
struct user_config_s {
+ char *instance;
+
_Bool monitor_cache;
_Bool monitor_connections;
_Bool monitor_esi;
};
typedef struct user_config_s user_config_t; /* }}} */
-/* {{{ Configuration directives */
-static user_config_t user_config = USER_CONFIG_INIT;
-
-static const char *config_keys[] =
-{
- "MonitorCache",
- "MonitorConnections",
- "MonitorESI",
- "MonitorBackend",
- "MonitorFetch",
- "MonitorHCB",
- "MonitorSHM",
- "MonitorSMA",
- "MonitorSMS",
- "MonitorSM"
-};
-
-static int config_keys_num = STATIC_ARRAY_SIZE (config_keys); /* }}} */
-
-static int varnish_config(const char *key, const char *value) /* {{{ */
-{
- SET_MONITOR_FLAG("MonitorCache" , monitor_cache , value);
- SET_MONITOR_FLAG("MonitorConnections", monitor_connections, value);
- SET_MONITOR_FLAG("MonitorESI" , monitor_esi , value);
- SET_MONITOR_FLAG("MonitorBackend" , monitor_backend , value);
- SET_MONITOR_FLAG("MonitorFetch" , monitor_fetch , value);
- SET_MONITOR_FLAG("MonitorHCB" , monitor_hcb , value);
- SET_MONITOR_FLAG("MonitorSHM" , monitor_shm , value);
- SET_MONITOR_FLAG("MonitorSMA" , monitor_sma , value);
- SET_MONITOR_FLAG("MonitorSMS" , monitor_sms , value);
- SET_MONITOR_FLAG("MonitorSM" , monitor_sm , value);
-
- return (0);
-} /* }}} */
+static _Bool have_instance = 0;
static void varnish_submit(const char *type, const char *type_instance, gauge_t value) /* {{{ */
{
plugin_dispatch_values(&vl);
} /* }}} */
-static void varnish_monitor(struct varnish_stats *VSL_stats) /* {{{ */
+static void varnish_monitor(const user_config_t *conf, struct varnish_stats *VSL_stats) /* {{{ */
{
- if(user_config.monitor_cache)
+ if(conf->monitor_cache)
{
varnish_submit("varnish_cache_ratio", "cache_hit" , VSL_stats->cache_hit); /* Cache hits */
varnish_submit("varnish_cache_ratio", "cache_miss" , VSL_stats->cache_miss); /* Cache misses */
varnish_submit("varnish_cache_ratio", "cache_hitpass", VSL_stats->cache_hitpass); /* Cache hits for pass */
}
- if(user_config.monitor_connections)
+ if(conf->monitor_connections)
{
varnish_submit("varnish_connections", "client_connections-accepted", VSL_stats->client_conn); /* Client connections accepted */
varnish_submit("varnish_connections", "client_connections-dropped" , VSL_stats->client_drop); /* Connection dropped, no sess */
varnish_submit("varnish_connections", "client_connections-received", VSL_stats->client_req); /* Client requests received */
}
- if(user_config.monitor_esi)
+ if(conf->monitor_esi)
{
varnish_submit("varnish_esi", "esi_parsed", VSL_stats->esi_parse); /* Objects ESI parsed (unlock) */
varnish_submit("varnish_esi", "esi_errors", VSL_stats->esi_errors); /* ESI parse errors (unlock) */
}
- if(user_config.monitor_backend)
+ if(conf->monitor_backend)
{
varnish_submit("varnish_backend_connections", "backend_connections-success" , VSL_stats->backend_conn); /* Backend conn. success */
varnish_submit("varnish_backend_connections", "backend_connections-not-attempted", VSL_stats->backend_unhealthy); /* Backend conn. not attempted */
varnish_submit("varnish_backend_connections", "backend_connections-unused" , VSL_stats->backend_unused); /* Backend conn. unused */
}
- if(user_config.monitor_fetch)
+ if(conf->monitor_fetch)
{
varnish_submit("varnish_fetch", "fetch_head" , VSL_stats->fetch_head); /* Fetch head */
varnish_submit("varnish_fetch", "fetch_length" , VSL_stats->fetch_length); /* Fetch with length */
varnish_submit("varnish_fetch", "fetch_failed" , VSL_stats->fetch_failed); /* Fetch failed */
}
- if(user_config.monitor_hcb)
+ if(conf->monitor_hcb)
{
varnish_submit("varnish_hcb", "hcb_nolock", VSL_stats->hcb_nolock); /* HCB Lookups without lock */
varnish_submit("varnish_hcb", "hcb_lock" , VSL_stats->hcb_lock); /* HCB Lookups with lock */
varnish_submit("varnish_hcb", "hcb_insert", VSL_stats->hcb_insert); /* HCB Inserts */
}
- if(user_config.monitor_shm)
+ if(conf->monitor_shm)
{
varnish_submit("varnish_shm", "shm_records" , VSL_stats->shm_records); /* SHM records */
varnish_submit("varnish_shm", "shm_writes" , VSL_stats->shm_writes); /* SHM writes */
varnish_submit("varnish_shm", "shm_cycles" , VSL_stats->shm_cycles); /* SHM cycles through buffer */
}
- if(user_config.monitor_sma)
+ if(conf->monitor_sma)
{
varnish_submit("varnish_sma", "sma_req" , VSL_stats->sma_nreq); /* SMA allocator requests */
varnish_submit("varnish_sma", "sma_nobj" , VSL_stats->sma_nobj); /* SMA outstanding allocations */
varnish_submit("varnish_sma", "sma_bfree" , VSL_stats->sma_bfree); /* SMA bytes free */
}
- if(user_config.monitor_sms)
+ if(conf->monitor_sms)
{
varnish_submit("varnish_sms", "sms_nreq" , VSL_stats->sms_nreq); /* SMS allocator requests */
varnish_submit("varnish_sms", "sms_nobj" , VSL_stats->sms_nobj); /* SMS outstanding allocations */
varnish_submit("varnish_sms", "sms_bfree" , VSL_stats->sms_bfree); /* SMS bytes freed */
}
- if(user_config.monitor_sm)
+ if(conf->monitor_sm)
{
varnish_submit("varnish_sm", "sm_nreq" , VSL_stats->sm_nreq); /* allocator requests */
varnish_submit("varnish_sm", "sm_nobj" , VSL_stats->sm_nobj); /* outstanding allocations */
}
} /* }}} */
-static int varnish_read(void) /* {{{ */
+static int varnish_read(user_data_t *ud) /* {{{ */
{
struct varnish_stats *VSL_stats;
- const char *varnish_instance_name = NULL;
+ user_config_t *conf;
+
+ if ((ud == NULL) || (ud->data == NULL))
+ return (EINVAL);
+
+ conf = ud->data;
- if ((VSL_stats = VSL_OpenStats(varnish_instance_name)) == NULL)
+ VSL_stats = VSL_OpenStats(conf->instance);
+ if (VSL_stats == NULL)
{
ERROR("Varnish plugin : unable to load statistics");
return (-1);
}
- varnish_monitor(VSL_stats);
+ varnish_monitor(conf, VSL_stats);
return (0);
} /* }}} */
+static void varnish_config_free (void *ptr) /* {{{ */
+{
+ user_config_t *conf = ptr;
+
+ if (conf == NULL)
+ return;
+
+ sfree (conf->instance);
+ sfree (conf);
+} /* }}} */
+
+static int varnish_init (void) /* {{{ */
+{
+ user_config_t *conf;
+ user_data_t ud;
+
+ if (have_instance)
+ return (0);
+
+ conf = malloc (sizeof (*conf));
+ if (conf == NULL)
+ return (ENOMEM);
+ memset (conf, 0, sizeof (*conf));
+
+ /* Default settings: */
+ conf->instance = NULL;
+ conf->monitor_cache = 1;
+ conf->monitor_connections = 1;
+
+ ud.data = conf;
+ ud.free_func = varnish_config_free;
+
+ plugin_register_complex_read (/* group = */ "varnish",
+ /* name = */ "varnish/localhost",
+ /* callback = */ varnish_read,
+ /* interval = */ NULL,
+ /* user data = */ &ud);
+
+ return (0);
+} /* }}} int varnish_init */
+
+static int varnish_config_instance (const oconfig_item_t *ci) /* {{{ */
+{
+ user_config_t *conf;
+ user_data_t ud;
+ char callback_name[DATA_MAX_NAME_LEN];
+ int i;
+
+ conf = malloc (sizeof (*conf));
+ if (conf == NULL)
+ return (ENOMEM);
+ memset (conf, 0, sizeof (*conf));
+ conf->instance = NULL;
+
+ if (ci->values_num == 1)
+ {
+ int status;
+
+ status = cf_util_get_string (ci, &conf->instance);
+ if (status != 0)
+ {
+ sfree (conf);
+ return (status);
+ }
+ assert (conf->instance != NULL);
+
+ if (strcmp ("localhost", conf->instance) == 0)
+ {
+ sfree (conf->instance);
+ conf->instance = NULL;
+ }
+ }
+ else if (ci->values_num > 1)
+ {
+ WARNING ("Varnish plugin: \"Instance\" blocks accept only "
+ "one argument.");
+ return (EINVAL);
+ }
+
+ for (i = 0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child = ci->children + i;
+
+ if (strcasecmp ("MonitorCache", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_cache);
+ else if (strcasecmp ("MonitorConnections", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_connections);
+ else if (strcasecmp ("MonitorESI", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_esi);
+ else if (strcasecmp ("MonitorBackend", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_backend);
+ else if (strcasecmp ("MonitorFetch", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_fetch);
+ else if (strcasecmp ("MonitorHCB", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_hcb);
+ else if (strcasecmp ("MonitorSHM", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_shm);
+ else if (strcasecmp ("MonitorSMA", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_sma);
+ else if (strcasecmp ("MonitorSMS", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_sms);
+ else if (strcasecmp ("MonitorSM", child->key) == 0)
+ cf_util_get_boolean (child, &conf->monitor_sm);
+ else
+ {
+ WARNING ("Varnish plugin: Ignoring unknown "
+ "configuration option: \"%s\"",
+ child->key);
+ }
+ }
+
+ if (!conf->monitor_cache
+ && !conf->monitor_connections
+ && !conf->monitor_esi
+ && !conf->monitor_backend
+ && !conf->monitor_fetch
+ && !conf->monitor_hcb
+ && !conf->monitor_shm
+ && !conf->monitor_sma
+ && !conf->monitor_sms
+ && !conf->monitor_sm)
+ {
+ WARNING ("Varnish plugin: No metric has been configured for "
+ "instance \"%s\". Disabling this instance.",
+ (conf->instance == NULL) ? "localhost" : conf->instance);
+ return (EINVAL);
+ }
+
+ ssnprintf (callback_name, sizeof (callback_name), "varnish/%s",
+ (conf->instance == NULL) ? "localhost" : conf->instance);
+
+ ud.data = conf;
+ ud.free_func = varnish_config_free;
+
+ plugin_register_complex_read (/* group = */ "varnish",
+ /* name = */ callback_name,
+ /* callback = */ varnish_read,
+ /* interval = */ NULL,
+ /* user data = */ &ud);
+
+ have_instance = 1;
+
+ return (0);
+} /* }}} int varnish_config_instance */
+
+static int varnish_config (oconfig_item_t *ci) /* {{{ */
+{
+ int i;
+
+ for (i = 0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child = ci->children + i;
+
+ if (strcasecmp ("Instance", child->key) == 0)
+ varnish_config_instance (child);
+ else
+ {
+ WARNING ("Varnish plugin: Ignoring unknown "
+ "configuration option: \"%s\"",
+ child->key);
+ }
+ }
+
+ return (0);
+} /* }}} int varnish_config */
+
void module_register (void) /* {{{ */
{
- plugin_register_config("varnish", varnish_config, config_keys, config_keys_num);
- plugin_register_read("varnish", varnish_read);
+ plugin_register_complex_config("varnish", varnish_config);
+ plugin_register_init ("varnish", varnish_init);
} /* }}} */
/* vim: set sw=8 noet fdm=marker : */
projects / collectd.git / commitdiff