#include "pinba.pb-c.h"
/*
- * Service declaration section
+ * Defines
*/
#ifndef PINBA_UDP_BUFFER_SIZE
# define PINBA_UDP_BUFFER_SIZE 65536
/*
* Private data structures
*/
-typedef struct _pinba_statres_ pinba_statres;
+typedef struct _pinba_statres_ pinba_statres_t;
struct _pinba_statres_ {
const char *name;
double req_per_sec;
typedef double pinba_time_t;
typedef uint32_t pinba_size_t;
-typedef struct pinba_statnode_s pinba_statnode_t;
+/* Fixed point counter value. n is the decimal part multiplied by 10^9. */
+struct float_counter_s
+{
+ uint64_t i;
+ uint64_t n; /* nanos */
+};
+typedef struct float_counter_s float_counter_t;
+
struct pinba_statnode_s
{
/* collector name */
char *name;
+
/* query data */
char *host;
char *server;
char *script;
- /* collected data */
- pinba_time_t last_coll;
- pinba_size_t req_count;
- pinba_time_t req_time;
- pinba_time_t ru_utime;
- pinba_time_t ru_stime;
- pinba_size_t doc_size;
- pinba_size_t mem_peak;
+
+ derive_t req_count;
+
+ float_counter_t req_time;
+ float_counter_t ru_utime;
+ float_counter_t ru_stime;
+
+ derive_t doc_size;
+ gauge_t mem_peak;
};
+typedef struct pinba_statnode_s pinba_statnode_t;
+/*
+ * Module global variables
+ */
static pinba_statnode_t *stat_nodes = NULL;
static unsigned int stat_nodes_num = 0;
static pthread_mutex_t stat_nodes_lock;
static _Bool collector_thread_do_shutdown = 0;
static pthread_t collector_thread_id;
-static pinba_time_t now (void) /* {{{ */
+/*
+ * Functions
+ */
+static void float_counter_add (float_counter_t *fc, float val) /* {{{ */
{
- static struct timeval tv;
-
- gettimeofday (&tv, /* tz = */ NULL);
-
- return (double)tv.tv_sec+((double)tv.tv_usec/(double)1000000);
-} /* }}} pinba_time_t now */
+ uint64_t tmp;
-static void service_statnode_reset (pinba_statnode_t *node) /* {{{ */
+ if (val < 0.0)
+ return;
+
+ tmp = (uint64_t) val;
+ val -= (double) tmp;
+
+ fc->i += tmp;
+ fc->n += (uint64_t) ((val * 1000000000.0) + .5);
+
+ if (fc->n >= 1000000000)
+ {
+ fc->i += 1;
+ fc->n -= 1000000000;
+ assert (fc->n < 1000000000);
+ }
+} /* }}} void float_counter_add */
+
+static derive_t float_counter_get (const float_counter_t *fc) /* {{{ */
{
- node->last_coll=now();
- node->req_count=0;
- node->req_time=0.0;
- node->ru_utime=0.0;
- node->ru_stime=0.0;
- node->doc_size=0;
- node->mem_peak=0;
-} /* }}} void service_statnode_reset */
+ if (fc->n >= 500000000)
+ return ((derive_t) (fc->i + 1));
+ else
+ return ((derive_t) fc->i);
+} /* }}} derive_t float_counter_get */
static void strset (char **str, const char *new) /* {{{ */
{
const char *script)
{
pinba_statnode_t *node;
- DEBUG("adding node `%s' to collector { %s, %s, %s }", name, host?host:"", server?server:"", script?script:"");
- stat_nodes=realloc(stat_nodes, sizeof(pinba_statnode_t)*(stat_nodes_num+1));
- if(!stat_nodes){
- ERROR("Realloc failed!");
- exit(-1);
+ node = realloc (stat_nodes,
+ sizeof (*stat_nodes) * (stat_nodes_num + 1));
+ if (node == NULL)
+ {
+ ERROR ("pinba plugin: realloc failed");
+ return;
}
-
- node=&stat_nodes[stat_nodes_num];
-
- /* reset stat data */
- service_statnode_reset(node);
+ stat_nodes = node;
+
+ node = stat_nodes + stat_nodes_num;
+ memset (node, 0, sizeof (*node));
/* reset strings */
- node->name=NULL;
- node->host=NULL;
- node->server=NULL;
- node->script=NULL;
+ node->name = NULL;
+ node->host = NULL;
+ node->server = NULL;
+ node->script = NULL;
+
+ node->mem_peak = NAN;
/* fill query data */
strset(&node->name, name);
stat_nodes_num++;
} /* }}} void service_statnode_add */
-static void service_statnode_free (void) /* {{{ */
-{
- unsigned int i;
-
- if(stat_nodes_num < 1)
- return;
-
- for (i = 0; i < stat_nodes_num; i++)
- {
- sfree (stat_nodes[i].name);
- sfree (stat_nodes[i].host);
- sfree (stat_nodes[i].server);
- sfree (stat_nodes[i].script);
- }
-
- sfree (stat_nodes);
- stat_nodes_num = 0;
-
- pthread_mutex_destroy (&stat_nodes_lock);
-} /* }}} void service_statnode_free */
-
-static void service_statnode_init (void) /* {{{ */
-{
- /* only total info collect by default */
- service_statnode_free();
-
- DEBUG("initializing collector..");
- pthread_mutex_init(&stat_nodes_lock, 0);
-} /* }}} void service_statnode_init */
-
-static void service_statnode_begin (void) /* {{{ */
-{
- service_statnode_init();
- pthread_mutex_lock(&stat_nodes_lock);
-
- service_statnode_add("total", NULL, NULL, NULL);
-} /* }}} void service_statnode_begin */
-
-static void service_statnode_end (void) /* {{{ */
-{
- pthread_mutex_unlock(&stat_nodes_lock);
-} /* }}} void service_statnode_end */
-
-static unsigned int service_statnode_collect (pinba_statres *res, /* {{{ */
+/* Copy the data from the global "stat_nodes" list into the buffer pointed to
+ * by "res", doing the derivation in the process. Returns the next index or
+ * zero if the end of the list has been reached. */
+static unsigned int service_statnode_collect (pinba_statnode_t *res, /* {{{ */
unsigned int index)
{
- pinba_statnode_t* node;
- pinba_time_t delta;
+ pinba_statnode_t *node;
if (stat_nodes_num == 0)
return 0;
pthread_mutex_unlock (&stat_nodes_lock);
return 0;
}
-
+
node = stat_nodes + index;
- delta = now() - node->last_coll;
-
- res->name = node->name;
- res->req_per_sec = node->req_count / delta;
-
- if (node->req_count == 0)
- node->req_count = 1;
-
- res->req_time = node->req_time / node->req_count;
- res->ru_utime = node->ru_utime / node->req_count;
- res->ru_stime = node->ru_stime / node->req_count;
- res->ru_stime = node->ru_stime / node->req_count;
- res->doc_size = node->doc_size / node->req_count;
- res->mem_peak = node->mem_peak / node->req_count;
+ memcpy (res, node, sizeof (*res));
+
+ /* reset node */
+ node->mem_peak = NAN;
- service_statnode_reset (node);
return (index + 1);
} /* }}} unsigned int service_statnode_collect */
Pinba__Request* request)
{
node->req_count++;
- node->req_time+=request->request_time;
- node->ru_utime+=request->ru_utime;
- node->ru_stime+=request->ru_stime;
- node->doc_size+=request->document_size;
- node->mem_peak+=request->memory_peak;
+
+ float_counter_add (&node->req_time, request->request_time);
+ float_counter_add (&node->ru_utime, request->ru_utime);
+ float_counter_add (&node->ru_stime, request->ru_stime);
+
+ node->doc_size += request->document_size;
+
+ if (isnan (node->mem_peak)
+ || (node->mem_peak < ((gauge_t) request->memory_peak)))
+ node->mem_peak = (gauge_t) request->memory_peak;
+
} /* }}} void service_statnode_process */
static void service_process_request (Pinba__Request *request) /* {{{ */
{
unsigned int i, o;
- service_statnode_begin();
-
+ pthread_mutex_lock (&stat_nodes_lock);
+ /* FIXME XXX: Remove all those return statements that don't free the lock. */
+
+ if (stat_nodes == NULL)
+ {
+ /* Collect the "total" data by default. */
+ service_statnode_add ("total",
+ /* host = */ NULL,
+ /* server = */ NULL,
+ /* script = */ NULL);
+ }
+
for (i = 0; i < ci->children_num; i++) {
oconfig_item_t *child = ci->children + i;
if (strcasecmp ("Address", child->key) == 0) {
}
}
- service_statnode_end();
+ pthread_mutex_unlock(&stat_nodes_lock);
return (0);
} /* int pinba_config */
return (0);
} /* }}} int plugin_shutdown */
-static int plugin_submit (const char *plugin_instance, /* {{{ */
- const char *type,
- const pinba_statres *res) {
- value_t values[6];
+static int plugin_submit (const pinba_statnode_t *res) /* {{{ */
+{
+ value_t value;
value_list_t vl = VALUE_LIST_INIT;
- values[0].gauge = res->req_per_sec;
- values[1].gauge = res->req_time;
- values[2].gauge = res->ru_utime;
- values[3].gauge = res->ru_stime;
- values[4].gauge = res->doc_size;
- values[5].gauge = res->mem_peak;
-
- vl.values = values;
- vl.values_len = 6;
+ vl.values = &value;
+ vl.values_len = 1;
sstrncpy (vl.host, hostname_g, sizeof (vl.host));
sstrncpy (vl.plugin, "pinba", sizeof (vl.plugin));
- sstrncpy (vl.plugin_instance, plugin_instance,
- sizeof(vl.plugin_instance));
- sstrncpy (vl.type, type, sizeof (vl.type));
- INFO("Pinba Dispatch");
+ sstrncpy (vl.plugin_instance, res->name, sizeof (vl.plugin_instance));
+
+ value.derive = res->req_count;
+ sstrncpy (vl.type, "requests", sizeof (vl.type));
+ plugin_dispatch_values (&vl);
+
+ value.derive = float_counter_get (&res->req_time);
+ sstrncpy (vl.type, "total_time", sizeof (vl.type));
+ plugin_dispatch_values (&vl);
+
+ value.derive = float_counter_get (&res->ru_utime);
+ sstrncpy (vl.type, "cpu", sizeof (vl.type));
+ sstrncpy (vl.type_instance, "user", sizeof (vl.type_instance));
+ plugin_dispatch_values (&vl);
+
+ value.derive = float_counter_get (&res->ru_stime);
+ sstrncpy (vl.type, "cpu", sizeof (vl.type));
+ sstrncpy (vl.type_instance, "system", sizeof (vl.type_instance));
+ plugin_dispatch_values (&vl);
+
+ value.gauge = res->mem_peak;
+ sstrncpy (vl.type, "memory", sizeof (vl.type));
+ sstrncpy (vl.type_instance, "peak", sizeof (vl.type_instance));
plugin_dispatch_values (&vl);
return (0);
static int plugin_read (void) /* {{{ */
{
unsigned int i=0;
- static pinba_statres res;
+ pinba_statnode_t data;
- while ((i = service_statnode_collect (&res, i)) != 0)
+ while ((i = service_statnode_collect (&data, i)) != 0)
{
- plugin_submit(res.name, "pinba_view", &res);
+ plugin_submit (&data);
}
return 0;
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