8a1692064b534dda25db368fdb77830cbebdcf15
1 /**
2 * collectd - src/mysql.c
3 * Copyright (C) 2006-2010 Florian octo Forster
4 * Copyright (C) 2008 Mirko Buffoni
5 * Copyright (C) 2009 Doug MacEachern
6 * Copyright (C) 2009 Sebastian tokkee Harl
7 * Copyright (C) 2009 Rodolphe QuiƩdeville
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; only version 2 of the License is applicable.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 * Authors:
23 * Florian octo Forster <octo at collectd.org>
24 * Mirko Buffoni <briareos at eswat.org>
25 * Doug MacEachern <dougm at hyperic.com>
26 * Sebastian tokkee Harl <sh at tokkee.org>
27 * Rodolphe QuiƩdeville <rquiedeville at bearstech.com>
28 **/
30 #include "collectd.h"
31 #include "common.h"
32 #include "plugin.h"
33 #include "configfile.h"
35 #ifdef HAVE_MYSQL_H
36 #include <mysql.h>
37 #elif defined(HAVE_MYSQL_MYSQL_H)
38 #include <mysql/mysql.h>
39 #endif
41 struct mysql_database_s /* {{{ */
42 {
43 char *instance;
44 char *alias;
45 char *host;
46 char *user;
47 char *pass;
48 char *database;
49 char *socket;
50 int port;
51 int timeout;
53 _Bool master_stats;
54 _Bool slave_stats;
55 _Bool innodb_stats;
57 _Bool slave_notif;
58 _Bool slave_io_running;
59 _Bool slave_sql_running;
61 MYSQL *con;
62 _Bool is_connected;
63 };
64 typedef struct mysql_database_s mysql_database_t; /* }}} */
66 static int mysql_read (user_data_t *ud);
68 static void mysql_database_free (void *arg) /* {{{ */
69 {
70 mysql_database_t *db;
72 DEBUG ("mysql plugin: mysql_database_free (arg = %p);", arg);
74 db = (mysql_database_t *) arg;
76 if (db == NULL)
77 return;
79 if (db->con != NULL)
80 mysql_close (db->con);
82 sfree (db->alias);
83 sfree (db->host);
84 sfree (db->user);
85 sfree (db->pass);
86 sfree (db->socket);
87 sfree (db->instance);
88 sfree (db->database);
89 sfree (db);
90 } /* }}} void mysql_database_free */
92 /* Configuration handling functions {{{
93 *
94 * <Plugin mysql>
95 * <Database "plugin_instance1">
96 * Host "localhost"
97 * Port 22000
98 * ...
99 * </Database>
100 * </Plugin>
101 */
102 static int mysql_config_database (oconfig_item_t *ci) /* {{{ */
103 {
104 mysql_database_t *db;
105 int status = 0;
106 int i;
108 if ((ci->values_num != 1)
109 || (ci->values[0].type != OCONFIG_TYPE_STRING))
110 {
111 WARNING ("mysql plugin: The `Database' block "
112 "needs exactly one string argument.");
113 return (-1);
114 }
116 db = (mysql_database_t *) malloc (sizeof (*db));
117 if (db == NULL)
118 {
119 ERROR ("mysql plugin: malloc failed.");
120 return (-1);
121 }
122 memset (db, 0, sizeof (*db));
124 /* initialize all the pointers */
125 db->alias = NULL;
126 db->host = NULL;
127 db->user = NULL;
128 db->pass = NULL;
129 db->database = NULL;
130 db->socket = NULL;
131 db->con = NULL;
132 db->timeout = 0;
134 /* trigger a notification, if it's not running */
135 db->slave_io_running = 1;
136 db->slave_sql_running = 1;
138 status = cf_util_get_string (ci, &db->instance);
139 if (status != 0)
140 {
141 sfree (db);
142 return (status);
143 }
144 assert (db->instance != NULL);
146 /* Fill the `mysql_database_t' structure.. */
147 for (i = 0; i < ci->children_num; i++)
148 {
149 oconfig_item_t *child = ci->children + i;
151 if (strcasecmp ("Alias", child->key) == 0)
152 status = cf_util_get_string (child, &db->alias);
153 else if (strcasecmp ("Host", child->key) == 0)
154 status = cf_util_get_string (child, &db->host);
155 else if (strcasecmp ("User", child->key) == 0)
156 status = cf_util_get_string (child, &db->user);
157 else if (strcasecmp ("Password", child->key) == 0)
158 status = cf_util_get_string (child, &db->pass);
159 else if (strcasecmp ("Port", child->key) == 0)
160 {
161 status = cf_util_get_port_number (child);
162 if (status > 0)
163 {
164 db->port = status;
165 status = 0;
166 }
167 }
168 else if (strcasecmp ("Socket", child->key) == 0)
169 status = cf_util_get_string (child, &db->socket);
170 else if (strcasecmp ("Database", child->key) == 0)
171 status = cf_util_get_string (child, &db->database);
172 else if (strcasecmp ("ConnectTimeout", child->key) == 0)
173 status = cf_util_get_int (child, &db->timeout);
174 else if (strcasecmp ("MasterStats", child->key) == 0)
175 status = cf_util_get_boolean (child, &db->master_stats);
176 else if (strcasecmp ("SlaveStats", child->key) == 0)
177 status = cf_util_get_boolean (child, &db->slave_stats);
178 else if (strcasecmp ("SlaveNotifications", child->key) == 0)
179 status = cf_util_get_boolean (child, &db->slave_notif);
180 else if (strcasecmp ("InnodbStats", child->key) == 0)
181 status = cf_util_get_boolean (child, &db->innodb_stats);
182 else
183 {
184 WARNING ("mysql plugin: Option `%s' not allowed here.", child->key);
185 status = -1;
186 }
188 if (status != 0)
189 break;
190 }
192 /* If all went well, register this database for reading */
193 if (status == 0)
194 {
195 user_data_t ud;
196 char cb_name[DATA_MAX_NAME_LEN];
198 DEBUG ("mysql plugin: Registering new read callback: %s",
199 (db->database != NULL) ? db->database : "<default>");
201 memset (&ud, 0, sizeof (ud));
202 ud.data = (void *) db;
203 ud.free_func = mysql_database_free;
205 if (db->instance != NULL)
206 ssnprintf (cb_name, sizeof (cb_name), "mysql-%s",
207 db->instance);
208 else
209 sstrncpy (cb_name, "mysql", sizeof (cb_name));
211 plugin_register_complex_read (/* group = */ NULL, cb_name,
212 mysql_read,
213 /* interval = */ 0, &ud);
214 }
215 else
216 {
217 mysql_database_free (db);
218 return (-1);
219 }
221 return (0);
222 } /* }}} int mysql_config_database */
224 static int mysql_config (oconfig_item_t *ci) /* {{{ */
225 {
226 int i;
228 if (ci == NULL)
229 return (EINVAL);
231 /* Fill the `mysql_database_t' structure.. */
232 for (i = 0; i < ci->children_num; i++)
233 {
234 oconfig_item_t *child = ci->children + i;
236 if (strcasecmp ("Database", child->key) == 0)
237 mysql_config_database (child);
238 else
239 WARNING ("mysql plugin: Option \"%s\" not allowed here.",
240 child->key);
241 }
243 return (0);
244 } /* }}} int mysql_config */
246 /* }}} End of configuration handling functions */
248 static MYSQL *getconnection (mysql_database_t *db)
249 {
250 if (db->is_connected)
251 {
252 int status;
254 status = mysql_ping (db->con);
255 if (status == 0)
256 return (db->con);
258 WARNING ("mysql plugin: Lost connection to instance \"%s\": %s",
259 db->instance, mysql_error (db->con));
260 }
261 db->is_connected = 0;
263 if (db->con == NULL)
264 {
265 db->con = mysql_init (NULL);
266 if (db->con == NULL)
267 {
268 ERROR ("mysql plugin: mysql_init failed: %s",
269 mysql_error (db->con));
270 return (NULL);
271 }
272 }
274 /* Configure TCP connect timeout (default: 0) */
275 db->con->options.connect_timeout = db->timeout;
277 if (mysql_real_connect (db->con, db->host, db->user, db->pass,
278 db->database, db->port, db->socket, 0) == NULL)
279 {
280 ERROR ("mysql plugin: Failed to connect to database %s "
281 "at server %s: %s",
282 (db->database != NULL) ? db->database : "<none>",
283 (db->host != NULL) ? db->host : "localhost",
284 mysql_error (db->con));
285 return (NULL);
286 }
288 INFO ("mysql plugin: Successfully connected to database %s "
289 "at server %s (server version: %s, protocol version: %d)",
290 (db->database != NULL) ? db->database : "<none>",
291 mysql_get_host_info (db->con),
292 mysql_get_server_info (db->con),
293 mysql_get_proto_info (db->con));
295 db->is_connected = 1;
296 return (db->con);
297 } /* static MYSQL *getconnection (mysql_database_t *db) */
299 static void set_host (mysql_database_t *db, char *buf, size_t buflen)
300 {
301 if (db->alias)
302 sstrncpy (buf, db->alias, buflen);
303 else if ((db->host == NULL)
304 || (strcmp ("", db->host) == 0)
305 || (strcmp ("127.0.0.1", db->host) == 0)
306 || (strcmp ("localhost", db->host) == 0))
307 sstrncpy (buf, hostname_g, buflen);
308 else
309 sstrncpy (buf, db->host, buflen);
310 } /* void set_host */
312 static void submit (const char *type, const char *type_instance,
313 value_t *values, size_t values_len, mysql_database_t *db)
314 {
315 value_list_t vl = VALUE_LIST_INIT;
317 vl.values = values;
318 vl.values_len = values_len;
320 set_host (db, vl.host, sizeof (vl.host));
322 sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
324 /* Assured by "mysql_config_database" */
325 assert (db->instance != NULL);
326 sstrncpy (vl.plugin_instance, db->instance, sizeof (vl.plugin_instance));
328 sstrncpy (vl.type, type, sizeof (vl.type));
329 if (type_instance != NULL)
330 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
332 plugin_dispatch_values (&vl);
333 } /* submit */
335 static void counter_submit (const char *type, const char *type_instance,
336 derive_t value, mysql_database_t *db)
337 {
338 value_t values[1];
340 values[0].derive = value;
341 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
342 } /* void counter_submit */
344 static void gauge_submit (const char *type, const char *type_instance,
345 gauge_t value, mysql_database_t *db)
346 {
347 value_t values[1];
349 values[0].gauge = value;
350 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
351 } /* void gauge_submit */
353 static void derive_submit (const char *type, const char *type_instance,
354 derive_t value, mysql_database_t *db)
355 {
356 value_t values[1];
358 values[0].derive = value;
359 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
360 } /* void derive_submit */
362 static void traffic_submit (derive_t rx, derive_t tx, mysql_database_t *db)
363 {
364 value_t values[2];
366 values[0].derive = rx;
367 values[1].derive = tx;
369 submit ("mysql_octets", NULL, values, STATIC_ARRAY_SIZE (values), db);
370 } /* void traffic_submit */
372 static MYSQL_RES *exec_query (MYSQL *con, const char *query)
373 {
374 MYSQL_RES *res;
376 int query_len = strlen (query);
378 if (mysql_real_query (con, query, query_len))
379 {
380 ERROR ("mysql plugin: Failed to execute query: %s",
381 mysql_error (con));
382 INFO ("mysql plugin: SQL query was: %s", query);
383 return (NULL);
384 }
386 res = mysql_store_result (con);
387 if (res == NULL)
388 {
389 ERROR ("mysql plugin: Failed to store query result: %s",
390 mysql_error (con));
391 INFO ("mysql plugin: SQL query was: %s", query);
392 return (NULL);
393 }
395 return (res);
396 } /* exec_query */
398 static int mysql_read_master_stats (mysql_database_t *db, MYSQL *con)
399 {
400 MYSQL_RES *res;
401 MYSQL_ROW row;
403 const char *query;
404 int field_num;
405 unsigned long long position;
407 query = "SHOW MASTER STATUS";
409 res = exec_query (con, query);
410 if (res == NULL)
411 return (-1);
413 row = mysql_fetch_row (res);
414 if (row == NULL)
415 {
416 ERROR ("mysql plugin: Failed to get master statistics: "
417 "`%s' did not return any rows.", query);
418 mysql_free_result (res);
419 return (-1);
420 }
422 field_num = mysql_num_fields (res);
423 if (field_num < 2)
424 {
425 ERROR ("mysql plugin: Failed to get master statistics: "
426 "`%s' returned less than two columns.", query);
427 mysql_free_result (res);
428 return (-1);
429 }
431 position = atoll (row[1]);
432 counter_submit ("mysql_log_position", "master-bin", position, db);
434 row = mysql_fetch_row (res);
435 if (row != NULL)
436 WARNING ("mysql plugin: `%s' returned more than one row - "
437 "ignoring further results.", query);
439 mysql_free_result (res);
441 return (0);
442 } /* mysql_read_master_stats */
444 static int mysql_read_slave_stats (mysql_database_t *db, MYSQL *con)
445 {
446 MYSQL_RES *res;
447 MYSQL_ROW row;
449 const char *query;
450 int field_num;
452 /* WTF? libmysqlclient does not seem to provide any means to
453 * translate a column name to a column index ... :-/ */
454 const int READ_MASTER_LOG_POS_IDX = 6;
455 const int SLAVE_IO_RUNNING_IDX = 10;
456 const int SLAVE_SQL_RUNNING_IDX = 11;
457 const int EXEC_MASTER_LOG_POS_IDX = 21;
458 const int SECONDS_BEHIND_MASTER_IDX = 32;
460 query = "SHOW SLAVE STATUS";
462 res = exec_query (con, query);
463 if (res == NULL)
464 return (-1);
466 row = mysql_fetch_row (res);
467 if (row == NULL)
468 {
469 ERROR ("mysql plugin: Failed to get slave statistics: "
470 "`%s' did not return any rows.", query);
471 mysql_free_result (res);
472 return (-1);
473 }
475 field_num = mysql_num_fields (res);
476 if (field_num < 33)
477 {
478 ERROR ("mysql plugin: Failed to get slave statistics: "
479 "`%s' returned less than 33 columns.", query);
480 mysql_free_result (res);
481 return (-1);
482 }
484 if (db->slave_stats)
485 {
486 unsigned long long counter;
487 double gauge;
489 counter = atoll (row[READ_MASTER_LOG_POS_IDX]);
490 counter_submit ("mysql_log_position", "slave-read", counter, db);
492 counter = atoll (row[EXEC_MASTER_LOG_POS_IDX]);
493 counter_submit ("mysql_log_position", "slave-exec", counter, db);
495 if (row[SECONDS_BEHIND_MASTER_IDX] != NULL)
496 {
497 gauge = atof (row[SECONDS_BEHIND_MASTER_IDX]);
498 gauge_submit ("time_offset", NULL, gauge, db);
499 }
500 }
502 if (db->slave_notif)
503 {
504 notification_t n = { 0, cdtime (), "", "",
505 "mysql", "", "time_offset", "", NULL };
507 char *io, *sql;
509 io = row[SLAVE_IO_RUNNING_IDX];
510 sql = row[SLAVE_SQL_RUNNING_IDX];
512 set_host (db, n.host, sizeof (n.host));
514 /* Assured by "mysql_config_database" */
515 assert (db->instance != NULL);
516 sstrncpy (n.plugin_instance, db->instance, sizeof (n.plugin_instance));
518 if (((io == NULL) || (strcasecmp (io, "yes") != 0))
519 && (db->slave_io_running))
520 {
521 n.severity = NOTIF_WARNING;
522 ssnprintf (n.message, sizeof (n.message),
523 "slave I/O thread not started or not connected to master");
524 plugin_dispatch_notification (&n);
525 db->slave_io_running = 0;
526 }
527 else if (((io != NULL) && (strcasecmp (io, "yes") == 0))
528 && (! db->slave_io_running))
529 {
530 n.severity = NOTIF_OKAY;
531 ssnprintf (n.message, sizeof (n.message),
532 "slave I/O thread started and connected to master");
533 plugin_dispatch_notification (&n);
534 db->slave_io_running = 1;
535 }
537 if (((sql == NULL) || (strcasecmp (sql, "yes") != 0))
538 && (db->slave_sql_running))
539 {
540 n.severity = NOTIF_WARNING;
541 ssnprintf (n.message, sizeof (n.message),
542 "slave SQL thread not started");
543 plugin_dispatch_notification (&n);
544 db->slave_sql_running = 0;
545 }
546 else if (((sql != NULL) && (strcasecmp (sql, "yes") == 0))
547 && (! db->slave_sql_running))
548 {
549 n.severity = NOTIF_OKAY;
550 ssnprintf (n.message, sizeof (n.message),
551 "slave SQL thread started");
552 plugin_dispatch_notification (&n);
553 db->slave_sql_running = 1;
554 }
555 }
557 row = mysql_fetch_row (res);
558 if (row != NULL)
559 WARNING ("mysql plugin: `%s' returned more than one row - "
560 "ignoring further results.", query);
562 mysql_free_result (res);
564 return (0);
565 } /* mysql_read_slave_stats */
567 static int mysql_read_innodb_stats (mysql_database_t *db, MYSQL *con)
568 {
569 MYSQL_RES *res;
570 MYSQL_ROW row;
572 const char *query;
573 struct {
574 const char *key;
575 const char *type;
576 int ds_type;
577 } metrics[] = {
578 { "metadata_mem_pool_size", "bytes", DS_TYPE_GAUGE },
579 { "lock_deadlocks", "mysql_locks", DS_TYPE_DERIVE },
580 { "lock_timeouts", "mysql_locks", DS_TYPE_DERIVE },
581 { "lock_row_lock_current_waits", "mysql_locks", DS_TYPE_DERIVE },
582 { "buffer_pool_size", "bytes", DS_TYPE_GAUGE },
584 { "buffer_pool_reads", "operations", DS_TYPE_DERIVE },
585 { "buffer_pool_read_requests", "operations", DS_TYPE_DERIVE },
586 { "buffer_pool_write_requests", "operations", DS_TYPE_DERIVE },
587 { "buffer_pool_wait_free", "operations", DS_TYPE_DERIVE },
588 { "buffer_pool_read_ahead", "operations", DS_TYPE_DERIVE },
589 { "buffer_pool_read_ahead_evicted", "operations", DS_TYPE_DERIVE },
591 { "buffer_pool_pages_total", "gauge", DS_TYPE_GAUGE },
592 { "buffer_pool_pages_misc", "gauge", DS_TYPE_GAUGE },
593 { "buffer_pool_pages_data", "gauge", DS_TYPE_GAUGE },
594 { "buffer_pool_bytes_data", "gauge", DS_TYPE_GAUGE },
595 { "buffer_pool_pages_dirty", "gauge", DS_TYPE_GAUGE },
596 { "buffer_pool_bytes_dirty", "gauge", DS_TYPE_GAUGE },
597 { "buffer_pool_pages_free", "gauge", DS_TYPE_GAUGE },
599 { "buffer_pages_created", "operations", DS_TYPE_DERIVE },
600 { "buffer_pages_written", "operations", DS_TYPE_DERIVE },
601 { "buffer_pages_read", "operations", DS_TYPE_DERIVE },
602 { "buffer_data_reads", "operations", DS_TYPE_DERIVE },
603 { "buffer_data_written", "operations", DS_TYPE_DERIVE },
605 { "os_data_reads", "operations", DS_TYPE_DERIVE },
606 { "os_data_writes", "operations", DS_TYPE_DERIVE },
607 { "os_data_fsyncs", "operations", DS_TYPE_DERIVE },
608 { "os_log_bytes_written", "operations", DS_TYPE_DERIVE },
609 { "os_log_fsyncs", "operations", DS_TYPE_DERIVE },
610 { "os_log_pending_fsyncs", "operations", DS_TYPE_DERIVE },
611 { "os_log_pending_writes", "operations", DS_TYPE_DERIVE },
613 { "trx_rseg_history_len", "gauge", DS_TYPE_GAUGE },
615 { "log_waits", "operations", DS_TYPE_DERIVE },
616 { "log_write_requests", "operations", DS_TYPE_DERIVE },
617 { "log_writes", "operations", DS_TYPE_DERIVE },
618 { "adaptive_hash_searches", "operations", DS_TYPE_DERIVE },
620 { "file_num_open_files", "gauge", DS_TYPE_GAUGE },
622 { "ibuf_merges_insert", "operations", DS_TYPE_DERIVE },
623 { "ibuf_merges_delete_mark", "operations", DS_TYPE_DERIVE },
624 { "ibuf_merges_delete", "operations", DS_TYPE_DERIVE },
625 { "ibuf_merges_discard_insert", "operations", DS_TYPE_DERIVE },
626 { "ibuf_merges_discard_delete_mark", "operations", DS_TYPE_DERIVE },
627 { "ibuf_merges_discard_delete", "operations", DS_TYPE_DERIVE },
628 { "ibuf_merges_discard_merges", "operations", DS_TYPE_DERIVE },
629 { "ibuf_size", "bytes", DS_TYPE_GAUGE },
631 { "innodb_activity_count", "gauge", DS_TYPE_GAUGE },
632 { "innodb_dblwr_writes", "operations", DS_TYPE_DERIVE },
633 { "innodb_dblwr_pages_written", "operations", DS_TYPE_DERIVE },
634 { "innodb_dblwr_page_size", "gauge", DS_TYPE_GAUGE },
636 { "innodb_rwlock_s_spin_waits", "operations", DS_TYPE_DERIVE },
637 { "innodb_rwlock_x_spin_waits", "operations", DS_TYPE_DERIVE },
638 { "innodb_rwlock_s_spin_rounds", "operations", DS_TYPE_DERIVE },
639 { "innodb_rwlock_x_spin_rounds", "operations", DS_TYPE_DERIVE },
640 { "innodb_rwlock_s_os_waits", "operations", DS_TYPE_DERIVE },
641 { "innodb_rwlock_x_os_waits", "operations", DS_TYPE_DERIVE },
643 { "dml_reads", "operations", DS_TYPE_DERIVE },
644 { "dml_inserts", "operations", DS_TYPE_DERIVE },
645 { "dml_deletes", "operations", DS_TYPE_DERIVE },
646 { "dml_updates", "operations", DS_TYPE_DERIVE },
648 { NULL, NULL, 0}
649 };
651 query = "SELECT name, count, type FROM information_schema.innodb_metrics WHERE status = 'enabled'";
653 res = exec_query (con, query);
654 if (res == NULL)
655 return (-1);
657 while ((row = mysql_fetch_row (res)))
658 {
659 int i;
660 char *key;
661 unsigned long long val;
663 key = row[0];
664 val = atoll (row[1]);
666 for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
667 ;
669 if (metrics[i].key == NULL)
670 continue;
672 switch (metrics[i].ds_type) {
673 case DS_TYPE_COUNTER:
674 counter_submit(metrics[i].type, key, (counter_t)val, db);
675 break;
676 case DS_TYPE_GAUGE:
677 gauge_submit(metrics[i].type, key, (gauge_t)val, db);
678 break;
679 case DS_TYPE_DERIVE:
680 derive_submit(metrics[i].type, key, (derive_t)val, db);
681 break;
682 }
683 }
685 mysql_free_result(res);
686 return (0);
687 }
689 static int mysql_read (user_data_t *ud)
690 {
691 mysql_database_t *db;
692 MYSQL *con;
693 MYSQL_RES *res;
694 MYSQL_ROW row;
695 const char *query;
697 derive_t qcache_hits = 0;
698 derive_t qcache_inserts = 0;
699 derive_t qcache_not_cached = 0;
700 derive_t qcache_lowmem_prunes = 0;
701 gauge_t qcache_queries_in_cache = NAN;
703 gauge_t threads_running = NAN;
704 gauge_t threads_connected = NAN;
705 gauge_t threads_cached = NAN;
706 derive_t threads_created = 0;
708 unsigned long long traffic_incoming = 0ULL;
709 unsigned long long traffic_outgoing = 0ULL;
710 unsigned long mysql_version = 0ULL;
712 if ((ud == NULL) || (ud->data == NULL))
713 {
714 ERROR ("mysql plugin: mysql_database_read: Invalid user data.");
715 return (-1);
716 }
718 db = (mysql_database_t *) ud->data;
720 /* An error message will have been printed in this case */
721 if ((con = getconnection (db)) == NULL)
722 return (-1);
724 mysql_version = mysql_get_server_version(con);
726 query = "SHOW STATUS";
727 if (mysql_version >= 50002)
728 query = "SHOW GLOBAL STATUS";
730 res = exec_query (con, query);
731 if (res == NULL)
732 return (-1);
734 while ((row = mysql_fetch_row (res)))
735 {
736 char *key;
737 unsigned long long val;
739 key = row[0];
740 val = atoll (row[1]);
742 if (strncmp (key, "Com_",
743 strlen ("Com_")) == 0)
744 {
745 if (val == 0ULL)
746 continue;
748 /* Ignore `prepared statements' */
749 if (strncmp (key, "Com_stmt_", strlen ("Com_stmt_")) != 0)
750 counter_submit ("mysql_commands",
751 key + strlen ("Com_"),
752 val, db);
753 }
754 else if (strncmp (key, "Handler_",
755 strlen ("Handler_")) == 0)
756 {
757 if (val == 0ULL)
758 continue;
760 counter_submit ("mysql_handler",
761 key + strlen ("Handler_"),
762 val, db);
763 }
764 else if (strncmp (key, "Qcache_",
765 strlen ("Qcache_")) == 0)
766 {
767 if (strcmp (key, "Qcache_hits") == 0)
768 qcache_hits = (derive_t) val;
769 else if (strcmp (key, "Qcache_inserts") == 0)
770 qcache_inserts = (derive_t) val;
771 else if (strcmp (key, "Qcache_not_cached") == 0)
772 qcache_not_cached = (derive_t) val;
773 else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
774 qcache_lowmem_prunes = (derive_t) val;
775 else if (strcmp (key, "Qcache_queries_in_cache") == 0)
776 qcache_queries_in_cache = (gauge_t) val;
777 }
778 else if (strncmp (key, "Bytes_",
779 strlen ("Bytes_")) == 0)
780 {
781 if (strcmp (key, "Bytes_received") == 0)
782 traffic_incoming += val;
783 else if (strcmp (key, "Bytes_sent") == 0)
784 traffic_outgoing += val;
785 }
786 else if (strncmp (key, "Threads_",
787 strlen ("Threads_")) == 0)
788 {
789 if (strcmp (key, "Threads_running") == 0)
790 threads_running = (gauge_t) val;
791 else if (strcmp (key, "Threads_connected") == 0)
792 threads_connected = (gauge_t) val;
793 else if (strcmp (key, "Threads_cached") == 0)
794 threads_cached = (gauge_t) val;
795 else if (strcmp (key, "Threads_created") == 0)
796 threads_created = (derive_t) val;
797 }
798 else if (strncmp (key, "Table_locks_",
799 strlen ("Table_locks_")) == 0)
800 {
801 counter_submit ("mysql_locks",
802 key + strlen ("Table_locks_"),
803 val, db);
804 }
805 else if (db->innodb_stats && strncmp (key, "Innodb_", strlen ("Innodb_")) == 0)
806 {
807 /* buffer pool */
808 if (strcmp (key, "Innodb_buffer_pool_pages_data") == 0)
809 gauge_submit ("mysql_bpool_pages", "data", val, db);
810 else if (strcmp (key, "Innodb_buffer_pool_pages_dirty") == 0)
811 gauge_submit ("mysql_bpool_pages", "dirty", val, db);
812 else if (strcmp (key, "Innodb_buffer_pool_pages_flushed") == 0)
813 counter_submit ("mysql_bpool_counters", "pages_flushed", val, db);
814 else if (strcmp (key, "Innodb_buffer_pool_pages_free") == 0)
815 gauge_submit ("mysql_bpool_pages", "free", val, db);
816 else if (strcmp (key, "Innodb_buffer_pool_pages_misc") == 0)
817 gauge_submit ("mysql_bpool_pages", "misc", val, db);
818 else if (strcmp (key, "Innodb_buffer_pool_pages_total") == 0)
819 gauge_submit ("mysql_bpool_pages", "total", val, db);
820 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_rnd") == 0)
821 counter_submit ("mysql_bpool_counters", "read_ahead_rnd", val, db);
822 else if (strcmp (key, "Innodb_buffer_pool_read_ahead") == 0)
823 counter_submit ("mysql_bpool_counters", "read_ahead", val, db);
824 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_evicted") == 0)
825 counter_submit ("mysql_bpool_counters", "read_ahead_evicted", val, db);
826 else if (strcmp (key, "Innodb_buffer_pool_read_requests") == 0)
827 counter_submit ("mysql_bpool_counters", "read_requests", val, db);
828 else if (strcmp (key, "Innodb_buffer_pool_reads") == 0)
829 counter_submit ("mysql_bpool_counters", "reads", val, db);
830 else if (strcmp (key, "Innodb_buffer_pool_write_requests") == 0)
831 counter_submit ("mysql_bpool_counters", "write_requests", val, db);
832 else if (strcmp (key, "Innodb_buffer_pool_bytes_data") == 0)
833 gauge_submit ("mysql_bpool_bytes", "data", val, db);
834 else if (strcmp (key, "Innodb_buffer_pool_bytes_dirty") == 0)
835 gauge_submit ("mysql_bpool_bytes", "dirty", val, db);
837 /* data */
838 if (strcmp (key, "Innodb_data_fsyncs") == 0)
839 counter_submit ("mysql_innodb_data", "fsyncs", val, db);
840 else if (strcmp (key, "Innodb_data_read") == 0)
841 counter_submit ("mysql_innodb_data", "read", val, db);
842 else if (strcmp (key, "Innodb_data_reads") == 0)
843 counter_submit ("mysql_innodb_data", "reads", val, db);
844 else if (strcmp (key, "Innodb_data_writes") == 0)
845 counter_submit ("mysql_innodb_data", "writes", val, db);
846 else if (strcmp (key, "Innodb_data_written") == 0)
847 counter_submit ("mysql_innodb_data", "written", val, db);
849 /* double write */
850 else if (strcmp (key, "Innodb_dblwr_writes") == 0)
851 counter_submit ("mysql_innodb_dblwr", "writes", val, db);
852 else if (strcmp (key, "Innodb_dblwr_pages_written") == 0)
853 counter_submit ("mysql_innodb_dblwr", "written", val, db);
855 /* log */
856 else if (strcmp (key, "Innodb_log_waits") == 0)
857 counter_submit ("mysql_innodb_log", "waits", val, db);
858 else if (strcmp (key, "Innodb_log_write_requests") == 0)
859 counter_submit ("mysql_innodb_log", "write_requests", val, db);
860 else if (strcmp (key, "Innodb_log_writes") == 0)
861 counter_submit ("mysql_innodb_log", "writes", val, db);
862 else if (strcmp (key, "Innodb_os_log_fsyncs") == 0)
863 counter_submit ("mysql_innodb_log", "fsyncs", val, db);
864 else if (strcmp (key, "Innodb_os_log_written") == 0)
865 counter_submit ("mysql_innodb_log", "written", val, db);
867 /* pages */
868 else if (strcmp (key, "Innodb_pages_created") == 0)
869 counter_submit ("mysql_innodb_pages", "created", val, db);
870 else if (strcmp (key, "Innodb_pages_read") == 0)
871 counter_submit ("mysql_innodb_pages", "read", val, db);
872 else if (strcmp (key, "Innodb_pages_written") == 0)
873 counter_submit ("mysql_innodb_pages", "written", val, db);
875 /* row lock */
876 else if (strcmp (key, "Innodb_row_lock_time") == 0)
877 counter_submit ("mysql_innodb_row_lock", "time", val, db);
878 else if (strcmp (key, "Innodb_row_lock_waits") == 0)
879 counter_submit ("mysql_innodb_row_lock", "waits", val, db);
881 /* rows */
882 else if (strcmp (key, "Innodb_rows_deleted") == 0)
883 counter_submit ("mysql_innodb_rows", "deleted", val, db);
884 else if (strcmp (key, "Innodb_rows_inserted") == 0)
885 counter_submit ("mysql_innodb_rows", "inserted", val, db);
886 else if (strcmp (key, "Innodb_rows_read") == 0)
887 counter_submit ("mysql_innodb_rows", "read", val, db);
888 else if (strcmp (key, "Innodb_rows_updated") == 0)
889 counter_submit ("mysql_innodb_rows", "updated", val, db);
890 }
891 else if (strncmp (key, "Select_", strlen ("Select_")) == 0)
892 {
893 counter_submit ("mysql_select", key + strlen ("Select_"),
894 val, db);
895 }
896 else if (strncmp (key, "Sort_", strlen ("Sort_")) == 0)
897 {
898 counter_submit ("mysql_sort", key + strlen ("Sort_"),
899 val, db);
900 }
901 }
902 mysql_free_result (res); res = NULL;
904 if ((qcache_hits != 0)
905 || (qcache_inserts != 0)
906 || (qcache_not_cached != 0)
907 || (qcache_lowmem_prunes != 0))
908 {
909 derive_submit ("cache_result", "qcache-hits",
910 qcache_hits, db);
911 derive_submit ("cache_result", "qcache-inserts",
912 qcache_inserts, db);
913 derive_submit ("cache_result", "qcache-not_cached",
914 qcache_not_cached, db);
915 derive_submit ("cache_result", "qcache-prunes",
916 qcache_lowmem_prunes, db);
918 gauge_submit ("cache_size", "qcache",
919 qcache_queries_in_cache, db);
920 }
922 if (threads_created != 0)
923 {
924 gauge_submit ("threads", "running",
925 threads_running, db);
926 gauge_submit ("threads", "connected",
927 threads_connected, db);
928 gauge_submit ("threads", "cached",
929 threads_cached, db);
931 derive_submit ("total_threads", "created",
932 threads_created, db);
933 }
935 traffic_submit (traffic_incoming, traffic_outgoing, db);
937 if (mysql_version >= 50600 && db->innodb_stats)
938 mysql_read_innodb_stats (db, con);
940 if (db->master_stats)
941 mysql_read_master_stats (db, con);
943 if ((db->slave_stats) || (db->slave_notif))
944 mysql_read_slave_stats (db, con);
946 return (0);
947 } /* int mysql_read */
949 void module_register (void)
950 {
951 plugin_register_complex_config ("mysql", mysql_config);
952 } /* void module_register */