/**
* collectd - src/mysql.c
- * Copyright (C) 2005 Florian octo Forster
+ * Copyright (C) 2006,2007 Florian octo Forster
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
+ * Free Software Foundation; only version 2 of the License is applicable.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
#include "plugin.h"
#include "configfile.h"
-#ifdef HAVE_MYSQL_MYSQL_H
+#ifdef HAVE_MYSQL_H
+#include <mysql.h>
+#elif defined(HAVE_MYSQL_MYSQL_H)
#include <mysql/mysql.h>
#endif
-#define MODULE_NAME "mysql"
+/* TODO: Understand `Select_*' and possibly do that stuff as well.. */
-#if COLLECT_LIBMYSQL
-# define MYSQL_HAVE_READ 1
-#else
-# define MYSQL_HAVE_READ 0
-#endif
-
-#define BUFSIZE 512
-
-static char *host = "localhost";
-static char *user;
-static char *pass;
-static char *db = NULL;
-
-static char init_suceeded = 0;
-
-static char *commands_file = "mysql/mysql_commands-%s.rrd";
-static char *handler_file = "mysql/mysql_handler-%s.rrd";
-static char *traffic_file = "traffic-mysql.rrd";
-
-static char *commands_ds_def[] =
-{
- "DS:value:COUNTER:25:0:U",
- NULL
-};
-static int commands_ds_num = 1;
-
-static char *handler_ds_def[] =
-{
- "DS:value:COUNTER:25:0:U",
- NULL
-};
-static int handler_ds_num = 1;
-
-static char *traffic_ds_def[] =
-{
- "DS:incoming:COUNTER:25:0:U",
- "DS:outgoing:COUNTER:25:0:U",
- NULL
-};
-static int traffic_ds_num = 2;
-
-static char *config_keys[] =
+static const char *config_keys[] =
{
"Host",
"User",
};
static int config_keys_num = 4;
-#if MYSQL_HAVE_READ
+static char *host = "localhost";
+static char *user;
+static char *pass;
+static char *db = NULL;
+
static MYSQL *getconnection (void)
{
static MYSQL *con;
static int state;
+ static int wait_for = 0;
+ static int wait_increase = 60;
+
if (state != 0)
{
int err;
if ((err = mysql_ping (con)) != 0)
{
- syslog (LOG_WARNING, "mysql_ping failed: %s", mysql_error (con));
+ WARNING ("mysql_ping failed: %s", mysql_error (con));
state = 0;
}
else
}
}
+ if (wait_for > 0)
+ {
+ wait_for -= interval_g;
+ return (NULL);
+ }
+
+ wait_for = wait_increase;
+ wait_increase *= 2;
+ if (wait_increase > 86400)
+ wait_increase = 86400;
+
if ((con = mysql_init (con)) == NULL)
{
- syslog (LOG_ERR, "mysql_init failed: %s", mysql_error (con));
+ ERROR ("mysql_init failed: %s", mysql_error (con));
state = 0;
return (NULL);
}
if (mysql_real_connect (con, host, user, pass, db, 0, NULL, 0) == NULL)
{
- syslog (LOG_ERR, "mysql_real_connect failed: %s", mysql_error (con));
+ ERROR ("mysql_real_connect failed: %s", mysql_error (con));
state = 0;
return (NULL);
}
else
{
state = 1;
+ wait_for = 0;
+ wait_increase = 60;
return (con);
}
} /* static MYSQL *getconnection (void) */
-#endif /* MYSQL_HAVE_READ */
-
-static void init (void)
-{
-#if MYSQL_HAVE_READ
- if (getconnection () != NULL)
- init_suceeded = 1;
- else
- {
- syslog (LOG_ERR, "The `mysql' plugin will be disabled because `init' failed to connect to `%s'", host);
- init_suceeded = 0;
- }
-#endif /* MYSQL_HAVE_READ */
-
- return;
-}
-static int config (char *key, char *value)
+static int config (const char *key, const char *value)
{
if (strcasecmp (key, "host") == 0)
return ((host = strdup (value)) == NULL ? 1 : 0);
return (-1);
}
-static void commands_write (char *host, char *inst, char *val)
-{
- char buf[BUFSIZE];
-
- if (snprintf (buf, BUFSIZE, commands_file, inst) >= BUFSIZE)
- return;
-
- rrd_update_file (host, buf, val, commands_ds_def, commands_ds_num);
-}
-
-static void handler_write (char *host, char *inst, char *val)
+static void counter_submit (const char *type, const char *type_instance,
+ counter_t value)
{
- char buf[BUFSIZE];
+ value_t values[1];
+ value_list_t vl = VALUE_LIST_INIT;
- if (snprintf (buf, BUFSIZE, handler_file, inst) >= BUFSIZE)
- return;
+ values[0].counter = value;
- rrd_update_file (host, buf, val, handler_ds_def, handler_ds_num);
-}
+ vl.values = values;
+ vl.values_len = 1;
+ vl.time = time (NULL);
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
+ sstrncpy (vl.type, type, sizeof (vl.type));
+ sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
-static void traffic_write (char *host, char *inst, char *val)
-{
- rrd_update_file (host, traffic_file, val, traffic_ds_def, traffic_ds_num);
-}
+ plugin_dispatch_values (&vl);
+} /* void counter_submit */
-#if MYSQL_HAVE_READ
-static void commands_submit (char *inst, unsigned long long value)
+static void qcache_submit (counter_t hits, counter_t inserts,
+ counter_t not_cached, counter_t lowmem_prunes,
+ gauge_t queries_in_cache)
{
- char buf[BUFSIZE];
- int status;
-
- status = snprintf (buf, BUFSIZE, "%u:%llu", (unsigned int) curtime, value);
-
- if (status < 0)
- {
- syslog (LOG_ERR, "snprintf failed");
- return;
- }
- else if (status >= BUFSIZE)
- {
- syslog (LOG_WARNING, "snprintf was truncated");
- return;
- }
-
- plugin_submit ("mysql_commands", inst, buf);
-}
-
-static void handler_submit (char *inst, unsigned long long value)
+ value_t values[5];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ values[0].counter = hits;
+ values[1].counter = inserts;
+ values[2].counter = not_cached;
+ values[3].counter = lowmem_prunes;
+ values[4].gauge = queries_in_cache;
+
+ vl.values = values;
+ vl.values_len = 5;
+ vl.time = time (NULL);
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
+ sstrncpy (vl.type, "mysql_qcache", sizeof (vl.type));
+
+ plugin_dispatch_values (&vl);
+} /* void qcache_submit */
+
+static void threads_submit (gauge_t running, gauge_t connected, gauge_t cached,
+ counter_t created)
{
- char buf[BUFSIZE];
- int status;
+ value_t values[4];
+ value_list_t vl = VALUE_LIST_INIT;
- status = snprintf (buf, BUFSIZE, "%u:%llu", (unsigned int) curtime, value);
+ values[0].gauge = running;
+ values[1].gauge = connected;
+ values[2].gauge = cached;
+ values[3].counter = created;
- if (status < 0)
- {
- syslog (LOG_ERR, "snprintf failed");
- return;
- }
- else if (status >= BUFSIZE)
- {
- syslog (LOG_WARNING, "snprintf was truncated");
- return;
- }
+ vl.values = values;
+ vl.values_len = 4;
+ vl.time = time (NULL);
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
+ sstrncpy (vl.type, "mysql_threads", sizeof (vl.type));
- plugin_submit ("mysql_handler", inst, buf);
-}
+ plugin_dispatch_values (&vl);
+} /* void threads_submit */
-static void traffic_submit (unsigned long long incoming,
- unsigned long long outgoing)
+static void traffic_submit (counter_t rx, counter_t tx)
{
- char buf[BUFSIZE];
- int status;
+ value_t values[2];
+ value_list_t vl = VALUE_LIST_INIT;
- status = snprintf (buf, BUFSIZE, "%u:%llu:%llu", (unsigned int) curtime,
- incoming, outgoing);
+ values[0].counter = rx;
+ values[1].counter = tx;
- if (status < 0)
- {
- syslog (LOG_ERR, "snprintf failed");
- return;
- }
- else if (status >= BUFSIZE)
- {
- syslog (LOG_WARNING, "snprintf was truncated");
- return;
- }
+ vl.values = values;
+ vl.values_len = 2;
+ vl.time = time (NULL);
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
+ sstrncpy (vl.type, "mysql_octets", sizeof (vl.type));
- plugin_submit ("mysql_traffic", "-", buf);
-}
+ plugin_dispatch_values (&vl);
+} /* void traffic_submit */
-static void mysql_read (void)
+static int mysql_read (void)
{
MYSQL *con;
MYSQL_RES *res;
int query_len;
int field_num;
- unsigned long long traffic_incoming = 0LL;
- unsigned long long traffic_outgoing = 0LL;
+ unsigned long long qcache_hits = 0ULL;
+ unsigned long long qcache_inserts = 0ULL;
+ unsigned long long qcache_not_cached = 0ULL;
+ unsigned long long qcache_lowmem_prunes = 0ULL;
+ int qcache_queries_in_cache = -1;
+
+ int threads_running = -1;
+ int threads_connected = -1;
+ int threads_cached = -1;
+ unsigned long long threads_created = 0ULL;
- if (init_suceeded == 0)
- return;
+ unsigned long long traffic_incoming = 0ULL;
+ unsigned long long traffic_outgoing = 0ULL;
/* An error message will have been printed in this case */
if ((con = getconnection ()) == NULL)
- return;
+ return (-1);
query = "SHOW STATUS";
+ if (mysql_get_server_version (con) >= 50002)
+ query = "SHOW GLOBAL STATUS";
+
query_len = strlen (query);
if (mysql_real_query (con, query, query_len))
{
- syslog (LOG_ERR, "mysql_real_query failed: %s\n", mysql_error (con));
- return;
+ ERROR ("mysql_real_query failed: %s\n",
+ mysql_error (con));
+ return (-1);
}
if ((res = mysql_store_result (con)) == NULL)
{
- syslog (LOG_ERR, "mysql_store_result failed: %s\n", mysql_error (con));
- return;
+ ERROR ("mysql_store_result failed: %s\n",
+ mysql_error (con));
+ return (-1);
}
field_num = mysql_num_fields (res);
key = row[0];
val = atoll (row[1]);
- if (val == 0ULL)
- continue;
-
if (strncmp (key, "Com_", 4) == 0)
{
+ if (val == 0ULL)
+ continue;
+
/* Ignore `prepared statements' */
if (strncmp (key, "Com_stmt_", 9) != 0)
- commands_submit (key + 4, val);
+ counter_submit ("mysql_commands", key + 4, val);
}
else if (strncmp (key, "Handler_", 8) == 0)
{
- handler_submit (key + 8, val);
+ if (val == 0ULL)
+ continue;
+
+ counter_submit ("mysql_handler", key + 8, val);
+ }
+ else if (strncmp (key, "Qcache_", 7) == 0)
+ {
+ if (strcmp (key, "Qcache_hits") == 0)
+ qcache_hits = val;
+ else if (strcmp (key, "Qcache_inserts") == 0)
+ qcache_inserts = val;
+ else if (strcmp (key, "Qcache_not_cached") == 0)
+ qcache_not_cached = val;
+ else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
+ qcache_lowmem_prunes = val;
+ else if (strcmp (key, "Qcache_queries_in_cache") == 0)
+ qcache_queries_in_cache = (int) val;
}
else if (strncmp (key, "Bytes_", 6) == 0)
{
else if (strcmp (key, "Bytes_sent") == 0)
traffic_outgoing += val;
}
+ else if (strncmp (key, "Threads_", 8) == 0)
+ {
+ if (strcmp (key, "Threads_running") == 0)
+ threads_running = (int) val;
+ else if (strcmp (key, "Threads_connected") == 0)
+ threads_connected = (int) val;
+ else if (strcmp (key, "Threads_cached") == 0)
+ threads_cached = (int) val;
+ else if (strcmp (key, "Threads_created") == 0)
+ threads_created = val;
+ }
}
mysql_free_result (res); res = NULL;
+ if ((qcache_hits != 0ULL)
+ || (qcache_inserts != 0ULL)
+ || (qcache_not_cached != 0ULL)
+ || (qcache_lowmem_prunes != 0ULL))
+ qcache_submit (qcache_hits, qcache_inserts, qcache_not_cached,
+ qcache_lowmem_prunes, qcache_queries_in_cache);
+
+ if (threads_created != 0ULL)
+ threads_submit (threads_running, threads_connected,
+ threads_cached, threads_created);
+
traffic_submit (traffic_incoming, traffic_outgoing);
/* mysql_close (con); */
- return;
-}
-#else
-# define mysql_read NULL
-#endif /* MYSQL_HAVE_READ */
+ return (0);
+} /* int mysql_read */
void module_register (void)
{
- plugin_register (MODULE_NAME, init, mysql_read, NULL);
- plugin_register ("mysql_commands", NULL, NULL, commands_write);
- plugin_register ("mysql_handler", NULL, NULL, handler_write);
- plugin_register ("mysql_traffic", NULL, NULL, traffic_write);
- cf_register (MODULE_NAME, config, config_keys, config_keys_num);
-}
-
-#undef BUFSIZE
-#undef MODULE_NAME
+ plugin_register_config ("mysql", config, config_keys, config_keys_num);
+ plugin_register_read ("mysql", mysql_read);
+} /* void module_register */
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