/**
* collectd - src/statsd.c
- *
* Copyright (C) 2013 Florian octo Forster
*
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
- * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
* Authors:
* Florian octo Forster <octo at collectd.org>
#include "common.h"
#include "configfile.h"
#include "utils_avltree.h"
-#include "utils_complain.h"
#include "utils_latency.h"
-#include <pthread.h>
-
#include <sys/types.h>
-#include <sys/socket.h>
#include <netdb.h>
#include <poll.h>
{
metric_type_t type;
double value;
+ derive_t counter;
latency_counter_t *latency;
c_avl_tree_t *set;
unsigned long updates_num;
static double *conf_timer_percentile = NULL;
static size_t conf_timer_percentile_num = 0;
+static _Bool conf_counter_sum = 0;
static _Bool conf_timer_lower = 0;
static _Bool conf_timer_upper = 0;
static _Bool conf_timer_sum = 0;
return (NULL);
}
- metric = malloc (sizeof (*metric));
+ metric = calloc (1, sizeof (*metric));
if (metric == NULL)
{
- ERROR ("statsd plugin: malloc failed.");
+ ERROR ("statsd plugin: calloc failed.");
sfree (key_copy);
return (NULL);
}
- memset (metric, 0, sizeof (*metric));
metric->type = type;
metric->latency = NULL;
if (status != 0)
return (status);
+ /* Changes to the counter are added to (statsd_metric_t*)->value. ->counter is
+ * only updated in statsd_metric_submit_unsafe(). */
return (statsd_metric_add (name, (double) (value.gauge / scale.gauge),
STATSD_COUNTER));
} /* }}} int statsd_handle_counter */
/* Make sure metric->set exists. */
if (metric->set == NULL)
- metric->set = c_avl_create ((void *) strcmp);
+ metric->set = c_avl_create ((int (*) (const void *, const void *)) strcmp);
if (metric->set == NULL)
{
cf_util_get_boolean (child, &conf_delete_gauges);
else if (strcasecmp ("DeleteSets", child->key) == 0)
cf_util_get_boolean (child, &conf_delete_sets);
+ else if (strcasecmp ("CounterSum", child->key) == 0)
+ cf_util_get_boolean (child, &conf_counter_sum);
else if (strcasecmp ("TimerLower", child->key) == 0)
cf_util_get_boolean (child, &conf_timer_lower);
else if (strcasecmp ("TimerUpper", child->key) == 0)
{
pthread_mutex_lock (&metrics_lock);
if (metrics_tree == NULL)
- metrics_tree = c_avl_create ((void *) strcmp);
+ metrics_tree = c_avl_create ((int (*) (const void *, const void *)) strcmp);
if (!network_thread_running)
{
} /* }}} int statsd_metric_clear_set_unsafe */
/* Must hold metrics_lock when calling this function. */
-static int statsd_metric_submit_unsafe (char const *name, /* {{{ */
- statsd_metric_t const *metric)
+static int statsd_metric_submit_unsafe (char const *name, statsd_metric_t *metric) /* {{{ */
{
value_t values[1];
value_list_t vl = VALUE_LIST_INIT;
values[0].gauge = (gauge_t) c_avl_size (metric->set);
}
else { /* STATSD_COUNTER */
- /*
- * Expand a single value to two metrics:
- *
- * - The absolute counter, as a gauge
- * - A derived rate for this counter
- */
- values[0].derive = (derive_t) metric->value;
- plugin_dispatch_values(&vl);
-
- sstrncpy(vl.type, "gauge", sizeof (vl.type));
- values[0].gauge = (gauge_t) metric->value;
+ gauge_t delta = nearbyint (metric->value);
+
+ /* Etsy's statsd writes counters as two metrics: a rate and the change since
+ * the last write. Since collectd does not reset its DERIVE metrics to zero,
+ * this makes little sense, but we're dispatching a "count" metric here
+ * anyway - if requested by the user - for compatibility reasons. */
+ if (conf_counter_sum)
+ {
+ sstrncpy (vl.type, "count", sizeof (vl.type));
+ values[0].gauge = delta;
+ plugin_dispatch_values (&vl);
+
+ /* restore vl.type */
+ sstrncpy (vl.type, "derive", sizeof (vl.type));
+ }
+
+ /* Rather than resetting value to zero, subtract delta so we correctly keep
+ * track of residuals. */
+ metric->value -= delta;
+ metric->counter += (derive_t) delta;
+
+ values[0].derive = metric->counter;
}
return (plugin_dispatch_values (&vl));
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