1bc0fdf77b8e4429090d292e7ccc77f54667cc33
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"
32 #include "common.h"
33 #include "plugin.h"
34 #include "configfile.h"
36 #ifdef HAVE_MYSQL_H
37 #include <mysql.h>
38 #elif defined(HAVE_MYSQL_MYSQL_H)
39 #include <mysql/mysql.h>
40 #endif
42 struct mysql_database_s /* {{{ */
43 {
44 char *instance;
45 char *alias;
46 char *host;
47 char *user;
48 char *pass;
49 char *database;
50 char *socket;
51 int port;
52 int timeout;
54 _Bool master_stats;
55 _Bool slave_stats;
56 _Bool innodb_stats;
58 _Bool slave_notif;
59 _Bool slave_io_running;
60 _Bool slave_sql_running;
62 MYSQL *con;
63 _Bool is_connected;
64 };
65 typedef struct mysql_database_s mysql_database_t; /* }}} */
67 static int mysql_read (user_data_t *ud);
69 static void mysql_database_free (void *arg) /* {{{ */
70 {
71 mysql_database_t *db;
73 DEBUG ("mysql plugin: mysql_database_free (arg = %p);", arg);
75 db = arg;
77 if (db == NULL)
78 return;
80 if (db->con != NULL)
81 mysql_close (db->con);
83 sfree (db->alias);
84 sfree (db->host);
85 sfree (db->user);
86 sfree (db->pass);
87 sfree (db->socket);
88 sfree (db->instance);
89 sfree (db->database);
90 sfree (db);
91 } /* }}} void mysql_database_free */
93 /* Configuration handling functions {{{
94 *
95 * <Plugin mysql>
96 * <Database "plugin_instance1">
97 * Host "localhost"
98 * Port 22000
99 * ...
100 * </Database>
101 * </Plugin>
102 */
103 static int mysql_config_database (oconfig_item_t *ci) /* {{{ */
104 {
105 mysql_database_t *db;
106 int status = 0;
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 = calloc (1, sizeof (*db));
117 if (db == NULL)
118 {
119 ERROR ("mysql plugin: calloc failed.");
120 return (-1);
121 }
123 /* initialize all the pointers */
124 db->alias = NULL;
125 db->host = NULL;
126 db->user = NULL;
127 db->pass = NULL;
128 db->database = NULL;
129 db->socket = NULL;
130 db->con = NULL;
131 db->timeout = 0;
133 /* trigger a notification, if it's not running */
134 db->slave_io_running = 1;
135 db->slave_sql_running = 1;
137 status = cf_util_get_string (ci, &db->instance);
138 if (status != 0)
139 {
140 sfree (db);
141 return (status);
142 }
143 assert (db->instance != NULL);
145 /* Fill the `mysql_database_t' structure.. */
146 for (int i = 0; i < ci->children_num; i++)
147 {
148 oconfig_item_t *child = ci->children + i;
150 if (strcasecmp ("Alias", child->key) == 0)
151 status = cf_util_get_string (child, &db->alias);
152 else if (strcasecmp ("Host", child->key) == 0)
153 status = cf_util_get_string (child, &db->host);
154 else if (strcasecmp ("User", child->key) == 0)
155 status = cf_util_get_string (child, &db->user);
156 else if (strcasecmp ("Password", child->key) == 0)
157 status = cf_util_get_string (child, &db->pass);
158 else if (strcasecmp ("Port", child->key) == 0)
159 {
160 status = cf_util_get_port_number (child);
161 if (status > 0)
162 {
163 db->port = status;
164 status = 0;
165 }
166 }
167 else if (strcasecmp ("Socket", child->key) == 0)
168 status = cf_util_get_string (child, &db->socket);
169 else if (strcasecmp ("Database", child->key) == 0)
170 status = cf_util_get_string (child, &db->database);
171 else if (strcasecmp ("ConnectTimeout", child->key) == 0)
172 status = cf_util_get_int (child, &db->timeout);
173 else if (strcasecmp ("MasterStats", child->key) == 0)
174 status = cf_util_get_boolean (child, &db->master_stats);
175 else if (strcasecmp ("SlaveStats", child->key) == 0)
176 status = cf_util_get_boolean (child, &db->slave_stats);
177 else if (strcasecmp ("SlaveNotifications", child->key) == 0)
178 status = cf_util_get_boolean (child, &db->slave_notif);
179 else if (strcasecmp ("InnodbStats", child->key) == 0)
180 status = cf_util_get_boolean (child, &db->innodb_stats);
181 else
182 {
183 WARNING ("mysql plugin: Option `%s' not allowed here.", child->key);
184 status = -1;
185 }
187 if (status != 0)
188 break;
189 }
191 /* If all went well, register this database for reading */
192 if (status == 0)
193 {
194 user_data_t ud = { 0 };
195 char cb_name[DATA_MAX_NAME_LEN];
197 DEBUG ("mysql plugin: Registering new read callback: %s",
198 (db->database != NULL) ? db->database : "<default>");
200 ud.data = (void *) db;
201 ud.free_func = mysql_database_free;
203 if (db->instance != NULL)
204 ssnprintf (cb_name, sizeof (cb_name), "mysql-%s",
205 db->instance);
206 else
207 sstrncpy (cb_name, "mysql", sizeof (cb_name));
209 plugin_register_complex_read (/* group = */ NULL, cb_name,
210 mysql_read,
211 /* interval = */ 0, &ud);
212 }
213 else
214 {
215 mysql_database_free (db);
216 return (-1);
217 }
219 return (0);
220 } /* }}} int mysql_config_database */
222 static int mysql_config (oconfig_item_t *ci) /* {{{ */
223 {
224 if (ci == NULL)
225 return (EINVAL);
227 /* Fill the `mysql_database_t' structure.. */
228 for (int i = 0; i < ci->children_num; i++)
229 {
230 oconfig_item_t *child = ci->children + i;
232 if (strcasecmp ("Database", child->key) == 0)
233 mysql_config_database (child);
234 else
235 WARNING ("mysql plugin: Option \"%s\" not allowed here.",
236 child->key);
237 }
239 return (0);
240 } /* }}} int mysql_config */
242 /* }}} End of configuration handling functions */
244 static MYSQL *getconnection (mysql_database_t *db)
245 {
246 if (db->is_connected)
247 {
248 int status;
250 status = mysql_ping (db->con);
251 if (status == 0)
252 return (db->con);
254 WARNING ("mysql plugin: Lost connection to instance \"%s\": %s",
255 db->instance, mysql_error (db->con));
256 }
257 db->is_connected = 0;
259 if (db->con == NULL)
260 {
261 db->con = mysql_init (NULL);
262 if (db->con == NULL)
263 {
264 ERROR ("mysql plugin: mysql_init failed: %s",
265 mysql_error (db->con));
266 return (NULL);
267 }
268 }
270 /* Configure TCP connect timeout (default: 0) */
271 db->con->options.connect_timeout = db->timeout;
273 if (mysql_real_connect (db->con, db->host, db->user, db->pass,
274 db->database, db->port, db->socket, 0) == NULL)
275 {
276 ERROR ("mysql plugin: Failed to connect to database %s "
277 "at server %s: %s",
278 (db->database != NULL) ? db->database : "<none>",
279 (db->host != NULL) ? db->host : "localhost",
280 mysql_error (db->con));
281 return (NULL);
282 }
284 INFO ("mysql plugin: Successfully connected to database %s "
285 "at server %s (server version: %s, protocol version: %d)",
286 (db->database != NULL) ? db->database : "<none>",
287 mysql_get_host_info (db->con),
288 mysql_get_server_info (db->con),
289 mysql_get_proto_info (db->con));
291 db->is_connected = 1;
292 return (db->con);
293 } /* static MYSQL *getconnection (mysql_database_t *db) */
295 static void set_host (mysql_database_t *db, char *buf, size_t buflen)
296 {
297 if (db->alias)
298 sstrncpy (buf, db->alias, buflen);
299 else if ((db->host == NULL)
300 || (strcmp ("", db->host) == 0)
301 || (strcmp ("127.0.0.1", db->host) == 0)
302 || (strcmp ("localhost", db->host) == 0))
303 sstrncpy (buf, hostname_g, buflen);
304 else
305 sstrncpy (buf, db->host, buflen);
306 } /* void set_host */
308 static void submit (const char *type, const char *type_instance,
309 value_t *values, size_t values_len, mysql_database_t *db)
310 {
311 value_list_t vl = VALUE_LIST_INIT;
313 vl.values = values;
314 vl.values_len = values_len;
316 set_host (db, vl.host, sizeof (vl.host));
318 sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
320 /* Assured by "mysql_config_database" */
321 assert (db->instance != NULL);
322 sstrncpy (vl.plugin_instance, db->instance, sizeof (vl.plugin_instance));
324 sstrncpy (vl.type, type, sizeof (vl.type));
325 if (type_instance != NULL)
326 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
328 plugin_dispatch_values (&vl);
329 } /* submit */
331 static void counter_submit (const char *type, const char *type_instance,
332 derive_t value, mysql_database_t *db)
333 {
334 value_t values[1];
336 values[0].derive = value;
337 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
338 } /* void counter_submit */
340 static void gauge_submit (const char *type, const char *type_instance,
341 gauge_t value, mysql_database_t *db)
342 {
343 value_t values[1];
345 values[0].gauge = value;
346 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
347 } /* void gauge_submit */
349 static void derive_submit (const char *type, const char *type_instance,
350 derive_t value, mysql_database_t *db)
351 {
352 value_t values[1];
354 values[0].derive = value;
355 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
356 } /* void derive_submit */
358 static void traffic_submit (derive_t rx, derive_t tx, mysql_database_t *db)
359 {
360 value_t values[2];
362 values[0].derive = rx;
363 values[1].derive = tx;
365 submit ("mysql_octets", NULL, values, STATIC_ARRAY_SIZE (values), db);
366 } /* void traffic_submit */
368 static MYSQL_RES *exec_query (MYSQL *con, const char *query)
369 {
370 MYSQL_RES *res;
372 int query_len = strlen (query);
374 if (mysql_real_query (con, query, query_len))
375 {
376 ERROR ("mysql plugin: Failed to execute query: %s",
377 mysql_error (con));
378 INFO ("mysql plugin: SQL query was: %s", query);
379 return (NULL);
380 }
382 res = mysql_store_result (con);
383 if (res == NULL)
384 {
385 ERROR ("mysql plugin: Failed to store query result: %s",
386 mysql_error (con));
387 INFO ("mysql plugin: SQL query was: %s", query);
388 return (NULL);
389 }
391 return (res);
392 } /* exec_query */
394 static int mysql_read_master_stats (mysql_database_t *db, MYSQL *con)
395 {
396 MYSQL_RES *res;
397 MYSQL_ROW row;
399 const char *query;
400 int field_num;
401 unsigned long long position;
403 query = "SHOW MASTER STATUS";
405 res = exec_query (con, query);
406 if (res == NULL)
407 return (-1);
409 row = mysql_fetch_row (res);
410 if (row == NULL)
411 {
412 ERROR ("mysql plugin: Failed to get master statistics: "
413 "`%s' did not return any rows.", query);
414 mysql_free_result (res);
415 return (-1);
416 }
418 field_num = mysql_num_fields (res);
419 if (field_num < 2)
420 {
421 ERROR ("mysql plugin: Failed to get master statistics: "
422 "`%s' returned less than two columns.", query);
423 mysql_free_result (res);
424 return (-1);
425 }
427 position = atoll (row[1]);
428 counter_submit ("mysql_log_position", "master-bin", position, db);
430 row = mysql_fetch_row (res);
431 if (row != NULL)
432 WARNING ("mysql plugin: `%s' returned more than one row - "
433 "ignoring further results.", query);
435 mysql_free_result (res);
437 return (0);
438 } /* mysql_read_master_stats */
440 static int mysql_read_slave_stats (mysql_database_t *db, MYSQL *con)
441 {
442 MYSQL_RES *res;
443 MYSQL_ROW row;
445 const char *query;
446 int field_num;
448 /* WTF? libmysqlclient does not seem to provide any means to
449 * translate a column name to a column index ... :-/ */
450 const int READ_MASTER_LOG_POS_IDX = 6;
451 const int SLAVE_IO_RUNNING_IDX = 10;
452 const int SLAVE_SQL_RUNNING_IDX = 11;
453 const int EXEC_MASTER_LOG_POS_IDX = 21;
454 const int SECONDS_BEHIND_MASTER_IDX = 32;
456 query = "SHOW SLAVE STATUS";
458 res = exec_query (con, query);
459 if (res == NULL)
460 return (-1);
462 row = mysql_fetch_row (res);
463 if (row == NULL)
464 {
465 ERROR ("mysql plugin: Failed to get slave statistics: "
466 "`%s' did not return any rows.", query);
467 mysql_free_result (res);
468 return (-1);
469 }
471 field_num = mysql_num_fields (res);
472 if (field_num < 33)
473 {
474 ERROR ("mysql plugin: Failed to get slave statistics: "
475 "`%s' returned less than 33 columns.", query);
476 mysql_free_result (res);
477 return (-1);
478 }
480 if (db->slave_stats)
481 {
482 unsigned long long counter;
483 double gauge;
485 counter = atoll (row[READ_MASTER_LOG_POS_IDX]);
486 counter_submit ("mysql_log_position", "slave-read", counter, db);
488 counter = atoll (row[EXEC_MASTER_LOG_POS_IDX]);
489 counter_submit ("mysql_log_position", "slave-exec", counter, db);
491 if (row[SECONDS_BEHIND_MASTER_IDX] != NULL)
492 {
493 gauge = atof (row[SECONDS_BEHIND_MASTER_IDX]);
494 gauge_submit ("time_offset", NULL, gauge, db);
495 }
496 }
498 if (db->slave_notif)
499 {
500 notification_t n = { 0, cdtime (), "", "",
501 "mysql", "", "time_offset", "", NULL };
503 char *io, *sql;
505 io = row[SLAVE_IO_RUNNING_IDX];
506 sql = row[SLAVE_SQL_RUNNING_IDX];
508 set_host (db, n.host, sizeof (n.host));
510 /* Assured by "mysql_config_database" */
511 assert (db->instance != NULL);
512 sstrncpy (n.plugin_instance, db->instance, sizeof (n.plugin_instance));
514 if (((io == NULL) || (strcasecmp (io, "yes") != 0))
515 && (db->slave_io_running))
516 {
517 n.severity = NOTIF_WARNING;
518 ssnprintf (n.message, sizeof (n.message),
519 "slave I/O thread not started or not connected to master");
520 plugin_dispatch_notification (&n);
521 db->slave_io_running = 0;
522 }
523 else if (((io != NULL) && (strcasecmp (io, "yes") == 0))
524 && (! db->slave_io_running))
525 {
526 n.severity = NOTIF_OKAY;
527 ssnprintf (n.message, sizeof (n.message),
528 "slave I/O thread started and connected to master");
529 plugin_dispatch_notification (&n);
530 db->slave_io_running = 1;
531 }
533 if (((sql == NULL) || (strcasecmp (sql, "yes") != 0))
534 && (db->slave_sql_running))
535 {
536 n.severity = NOTIF_WARNING;
537 ssnprintf (n.message, sizeof (n.message),
538 "slave SQL thread not started");
539 plugin_dispatch_notification (&n);
540 db->slave_sql_running = 0;
541 }
542 else if (((sql != NULL) && (strcasecmp (sql, "yes") == 0))
543 && (! db->slave_sql_running))
544 {
545 n.severity = NOTIF_OKAY;
546 ssnprintf (n.message, sizeof (n.message),
547 "slave SQL thread started");
548 plugin_dispatch_notification (&n);
549 db->slave_sql_running = 1;
550 }
551 }
553 row = mysql_fetch_row (res);
554 if (row != NULL)
555 WARNING ("mysql plugin: `%s' returned more than one row - "
556 "ignoring further results.", query);
558 mysql_free_result (res);
560 return (0);
561 } /* mysql_read_slave_stats */
563 static int mysql_read_innodb_stats (mysql_database_t *db, MYSQL *con)
564 {
565 MYSQL_RES *res;
566 MYSQL_ROW row;
568 const char *query;
569 struct {
570 const char *key;
571 const char *type;
572 int ds_type;
573 } metrics[] = {
574 { "metadata_mem_pool_size", "bytes", DS_TYPE_GAUGE },
575 { "lock_deadlocks", "mysql_locks", DS_TYPE_DERIVE },
576 { "lock_timeouts", "mysql_locks", DS_TYPE_DERIVE },
577 { "lock_row_lock_current_waits", "mysql_locks", DS_TYPE_DERIVE },
578 { "buffer_pool_size", "bytes", DS_TYPE_GAUGE },
580 { "buffer_pool_reads", "operations", DS_TYPE_DERIVE },
581 { "buffer_pool_read_requests", "operations", DS_TYPE_DERIVE },
582 { "buffer_pool_write_requests", "operations", DS_TYPE_DERIVE },
583 { "buffer_pool_wait_free", "operations", DS_TYPE_DERIVE },
584 { "buffer_pool_read_ahead", "operations", DS_TYPE_DERIVE },
585 { "buffer_pool_read_ahead_evicted", "operations", DS_TYPE_DERIVE },
587 { "buffer_pool_pages_total", "gauge", DS_TYPE_GAUGE },
588 { "buffer_pool_pages_misc", "gauge", DS_TYPE_GAUGE },
589 { "buffer_pool_pages_data", "gauge", DS_TYPE_GAUGE },
590 { "buffer_pool_bytes_data", "gauge", DS_TYPE_GAUGE },
591 { "buffer_pool_pages_dirty", "gauge", DS_TYPE_GAUGE },
592 { "buffer_pool_bytes_dirty", "gauge", DS_TYPE_GAUGE },
593 { "buffer_pool_pages_free", "gauge", DS_TYPE_GAUGE },
595 { "buffer_pages_created", "operations", DS_TYPE_DERIVE },
596 { "buffer_pages_written", "operations", DS_TYPE_DERIVE },
597 { "buffer_pages_read", "operations", DS_TYPE_DERIVE },
598 { "buffer_data_reads", "operations", DS_TYPE_DERIVE },
599 { "buffer_data_written", "operations", DS_TYPE_DERIVE },
601 { "os_data_reads", "operations", DS_TYPE_DERIVE },
602 { "os_data_writes", "operations", DS_TYPE_DERIVE },
603 { "os_data_fsyncs", "operations", DS_TYPE_DERIVE },
604 { "os_log_bytes_written", "operations", DS_TYPE_DERIVE },
605 { "os_log_fsyncs", "operations", DS_TYPE_DERIVE },
606 { "os_log_pending_fsyncs", "operations", DS_TYPE_DERIVE },
607 { "os_log_pending_writes", "operations", DS_TYPE_DERIVE },
609 { "trx_rseg_history_len", "gauge", DS_TYPE_GAUGE },
611 { "log_waits", "operations", DS_TYPE_DERIVE },
612 { "log_write_requests", "operations", DS_TYPE_DERIVE },
613 { "log_writes", "operations", DS_TYPE_DERIVE },
614 { "adaptive_hash_searches", "operations", DS_TYPE_DERIVE },
616 { "file_num_open_files", "gauge", DS_TYPE_GAUGE },
618 { "ibuf_merges_insert", "operations", DS_TYPE_DERIVE },
619 { "ibuf_merges_delete_mark", "operations", DS_TYPE_DERIVE },
620 { "ibuf_merges_delete", "operations", DS_TYPE_DERIVE },
621 { "ibuf_merges_discard_insert", "operations", DS_TYPE_DERIVE },
622 { "ibuf_merges_discard_delete_mark", "operations", DS_TYPE_DERIVE },
623 { "ibuf_merges_discard_delete", "operations", DS_TYPE_DERIVE },
624 { "ibuf_merges_discard_merges", "operations", DS_TYPE_DERIVE },
625 { "ibuf_size", "bytes", DS_TYPE_GAUGE },
627 { "innodb_activity_count", "gauge", DS_TYPE_GAUGE },
628 { "innodb_dblwr_writes", "operations", DS_TYPE_DERIVE },
629 { "innodb_dblwr_pages_written", "operations", DS_TYPE_DERIVE },
630 { "innodb_dblwr_page_size", "gauge", DS_TYPE_GAUGE },
632 { "innodb_rwlock_s_spin_waits", "operations", DS_TYPE_DERIVE },
633 { "innodb_rwlock_x_spin_waits", "operations", DS_TYPE_DERIVE },
634 { "innodb_rwlock_s_spin_rounds", "operations", DS_TYPE_DERIVE },
635 { "innodb_rwlock_x_spin_rounds", "operations", DS_TYPE_DERIVE },
636 { "innodb_rwlock_s_os_waits", "operations", DS_TYPE_DERIVE },
637 { "innodb_rwlock_x_os_waits", "operations", DS_TYPE_DERIVE },
639 { "dml_reads", "operations", DS_TYPE_DERIVE },
640 { "dml_inserts", "operations", DS_TYPE_DERIVE },
641 { "dml_deletes", "operations", DS_TYPE_DERIVE },
642 { "dml_updates", "operations", DS_TYPE_DERIVE },
644 { NULL, NULL, 0}
645 };
647 query = "SELECT name, count, type FROM information_schema.innodb_metrics WHERE status = 'enabled'";
649 res = exec_query (con, query);
650 if (res == NULL)
651 return (-1);
653 while ((row = mysql_fetch_row (res)))
654 {
655 int i;
656 char *key;
657 unsigned long long val;
659 key = row[0];
660 val = atoll (row[1]);
662 for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
663 ;
665 if (metrics[i].key == NULL)
666 continue;
668 switch (metrics[i].ds_type) {
669 case DS_TYPE_COUNTER:
670 counter_submit(metrics[i].type, key, (counter_t)val, db);
671 break;
672 case DS_TYPE_GAUGE:
673 gauge_submit(metrics[i].type, key, (gauge_t)val, db);
674 break;
675 case DS_TYPE_DERIVE:
676 derive_submit(metrics[i].type, key, (derive_t)val, db);
677 break;
678 }
679 }
681 mysql_free_result(res);
682 return (0);
683 }
685 static int mysql_read (user_data_t *ud)
686 {
687 mysql_database_t *db;
688 MYSQL *con;
689 MYSQL_RES *res;
690 MYSQL_ROW row;
691 const char *query;
693 derive_t qcache_hits = 0;
694 derive_t qcache_inserts = 0;
695 derive_t qcache_not_cached = 0;
696 derive_t qcache_lowmem_prunes = 0;
697 gauge_t qcache_queries_in_cache = NAN;
699 gauge_t threads_running = NAN;
700 gauge_t threads_connected = NAN;
701 gauge_t threads_cached = NAN;
702 derive_t threads_created = 0;
704 unsigned long long traffic_incoming = 0ULL;
705 unsigned long long traffic_outgoing = 0ULL;
706 unsigned long mysql_version = 0ULL;
708 if ((ud == NULL) || (ud->data == NULL))
709 {
710 ERROR ("mysql plugin: mysql_database_read: Invalid user data.");
711 return (-1);
712 }
714 db = (mysql_database_t *) ud->data;
716 /* An error message will have been printed in this case */
717 if ((con = getconnection (db)) == NULL)
718 return (-1);
720 mysql_version = mysql_get_server_version(con);
722 query = "SHOW STATUS";
723 if (mysql_version >= 50002)
724 query = "SHOW GLOBAL STATUS";
726 res = exec_query (con, query);
727 if (res == NULL)
728 return (-1);
730 while ((row = mysql_fetch_row (res)))
731 {
732 char *key;
733 unsigned long long val;
735 key = row[0];
736 val = atoll (row[1]);
738 if (strncmp (key, "Com_",
739 strlen ("Com_")) == 0)
740 {
741 if (val == 0ULL)
742 continue;
744 /* Ignore `prepared statements' */
745 if (strncmp (key, "Com_stmt_", strlen ("Com_stmt_")) != 0)
746 counter_submit ("mysql_commands",
747 key + strlen ("Com_"),
748 val, db);
749 }
750 else if (strncmp (key, "Handler_",
751 strlen ("Handler_")) == 0)
752 {
753 if (val == 0ULL)
754 continue;
756 counter_submit ("mysql_handler",
757 key + strlen ("Handler_"),
758 val, db);
759 }
760 else if (strncmp (key, "Qcache_",
761 strlen ("Qcache_")) == 0)
762 {
763 if (strcmp (key, "Qcache_hits") == 0)
764 qcache_hits = (derive_t) val;
765 else if (strcmp (key, "Qcache_inserts") == 0)
766 qcache_inserts = (derive_t) val;
767 else if (strcmp (key, "Qcache_not_cached") == 0)
768 qcache_not_cached = (derive_t) val;
769 else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
770 qcache_lowmem_prunes = (derive_t) val;
771 else if (strcmp (key, "Qcache_queries_in_cache") == 0)
772 qcache_queries_in_cache = (gauge_t) val;
773 }
774 else if (strncmp (key, "Bytes_",
775 strlen ("Bytes_")) == 0)
776 {
777 if (strcmp (key, "Bytes_received") == 0)
778 traffic_incoming += val;
779 else if (strcmp (key, "Bytes_sent") == 0)
780 traffic_outgoing += val;
781 }
782 else if (strncmp (key, "Threads_",
783 strlen ("Threads_")) == 0)
784 {
785 if (strcmp (key, "Threads_running") == 0)
786 threads_running = (gauge_t) val;
787 else if (strcmp (key, "Threads_connected") == 0)
788 threads_connected = (gauge_t) val;
789 else if (strcmp (key, "Threads_cached") == 0)
790 threads_cached = (gauge_t) val;
791 else if (strcmp (key, "Threads_created") == 0)
792 threads_created = (derive_t) val;
793 }
794 else if (strncmp (key, "Table_locks_",
795 strlen ("Table_locks_")) == 0)
796 {
797 counter_submit ("mysql_locks",
798 key + strlen ("Table_locks_"),
799 val, db);
800 }
801 else if (db->innodb_stats && strncmp (key, "Innodb_", strlen ("Innodb_")) == 0)
802 {
803 /* buffer pool */
804 if (strcmp (key, "Innodb_buffer_pool_pages_data") == 0)
805 gauge_submit ("mysql_bpool_pages", "data", val, db);
806 else if (strcmp (key, "Innodb_buffer_pool_pages_dirty") == 0)
807 gauge_submit ("mysql_bpool_pages", "dirty", val, db);
808 else if (strcmp (key, "Innodb_buffer_pool_pages_flushed") == 0)
809 counter_submit ("mysql_bpool_counters", "pages_flushed", val, db);
810 else if (strcmp (key, "Innodb_buffer_pool_pages_free") == 0)
811 gauge_submit ("mysql_bpool_pages", "free", val, db);
812 else if (strcmp (key, "Innodb_buffer_pool_pages_misc") == 0)
813 gauge_submit ("mysql_bpool_pages", "misc", val, db);
814 else if (strcmp (key, "Innodb_buffer_pool_pages_total") == 0)
815 gauge_submit ("mysql_bpool_pages", "total", val, db);
816 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_rnd") == 0)
817 counter_submit ("mysql_bpool_counters", "read_ahead_rnd", val, db);
818 else if (strcmp (key, "Innodb_buffer_pool_read_ahead") == 0)
819 counter_submit ("mysql_bpool_counters", "read_ahead", val, db);
820 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_evicted") == 0)
821 counter_submit ("mysql_bpool_counters", "read_ahead_evicted", val, db);
822 else if (strcmp (key, "Innodb_buffer_pool_read_requests") == 0)
823 counter_submit ("mysql_bpool_counters", "read_requests", val, db);
824 else if (strcmp (key, "Innodb_buffer_pool_reads") == 0)
825 counter_submit ("mysql_bpool_counters", "reads", val, db);
826 else if (strcmp (key, "Innodb_buffer_pool_write_requests") == 0)
827 counter_submit ("mysql_bpool_counters", "write_requests", val, db);
828 else if (strcmp (key, "Innodb_buffer_pool_bytes_data") == 0)
829 gauge_submit ("mysql_bpool_bytes", "data", val, db);
830 else if (strcmp (key, "Innodb_buffer_pool_bytes_dirty") == 0)
831 gauge_submit ("mysql_bpool_bytes", "dirty", val, db);
833 /* data */
834 if (strcmp (key, "Innodb_data_fsyncs") == 0)
835 counter_submit ("mysql_innodb_data", "fsyncs", val, db);
836 else if (strcmp (key, "Innodb_data_read") == 0)
837 counter_submit ("mysql_innodb_data", "read", val, db);
838 else if (strcmp (key, "Innodb_data_reads") == 0)
839 counter_submit ("mysql_innodb_data", "reads", val, db);
840 else if (strcmp (key, "Innodb_data_writes") == 0)
841 counter_submit ("mysql_innodb_data", "writes", val, db);
842 else if (strcmp (key, "Innodb_data_written") == 0)
843 counter_submit ("mysql_innodb_data", "written", val, db);
845 /* double write */
846 else if (strcmp (key, "Innodb_dblwr_writes") == 0)
847 counter_submit ("mysql_innodb_dblwr", "writes", val, db);
848 else if (strcmp (key, "Innodb_dblwr_pages_written") == 0)
849 counter_submit ("mysql_innodb_dblwr", "written", val, db);
851 /* log */
852 else if (strcmp (key, "Innodb_log_waits") == 0)
853 counter_submit ("mysql_innodb_log", "waits", val, db);
854 else if (strcmp (key, "Innodb_log_write_requests") == 0)
855 counter_submit ("mysql_innodb_log", "write_requests", val, db);
856 else if (strcmp (key, "Innodb_log_writes") == 0)
857 counter_submit ("mysql_innodb_log", "writes", val, db);
858 else if (strcmp (key, "Innodb_os_log_fsyncs") == 0)
859 counter_submit ("mysql_innodb_log", "fsyncs", val, db);
860 else if (strcmp (key, "Innodb_os_log_written") == 0)
861 counter_submit ("mysql_innodb_log", "written", val, db);
863 /* pages */
864 else if (strcmp (key, "Innodb_pages_created") == 0)
865 counter_submit ("mysql_innodb_pages", "created", val, db);
866 else if (strcmp (key, "Innodb_pages_read") == 0)
867 counter_submit ("mysql_innodb_pages", "read", val, db);
868 else if (strcmp (key, "Innodb_pages_written") == 0)
869 counter_submit ("mysql_innodb_pages", "written", val, db);
871 /* row lock */
872 else if (strcmp (key, "Innodb_row_lock_time") == 0)
873 counter_submit ("mysql_innodb_row_lock", "time", val, db);
874 else if (strcmp (key, "Innodb_row_lock_waits") == 0)
875 counter_submit ("mysql_innodb_row_lock", "waits", val, db);
877 /* rows */
878 else if (strcmp (key, "Innodb_rows_deleted") == 0)
879 counter_submit ("mysql_innodb_rows", "deleted", val, db);
880 else if (strcmp (key, "Innodb_rows_inserted") == 0)
881 counter_submit ("mysql_innodb_rows", "inserted", val, db);
882 else if (strcmp (key, "Innodb_rows_read") == 0)
883 counter_submit ("mysql_innodb_rows", "read", val, db);
884 else if (strcmp (key, "Innodb_rows_updated") == 0)
885 counter_submit ("mysql_innodb_rows", "updated", val, db);
886 }
887 else if (strncmp (key, "Select_", strlen ("Select_")) == 0)
888 {
889 counter_submit ("mysql_select", key + strlen ("Select_"),
890 val, db);
891 }
892 else if (strncmp (key, "Sort_", strlen ("Sort_")) == 0)
893 {
894 if (strcmp (key, "Sort_merge_passes") == 0)
895 counter_submit ("mysql_sort_merge_passes", NULL, val, db);
896 else if (strcmp (key, "Sort_rows") == 0)
897 counter_submit ("mysql_sort_rows", NULL, val, db);
898 else if (strcmp (key, "Sort_range") == 0)
899 counter_submit ("mysql_sort", "range", val, db);
900 else if (strcmp (key, "Sort_scan") == 0)
901 counter_submit ("mysql_sort", "scan", val, db);
903 }
904 else if (strncmp (key, "Slow_queries", strlen ("Slow_queries")) == 0)
905 {
906 counter_submit ("mysql_slow_queries", NULL , val, db);
907 }
908 }
909 mysql_free_result (res); res = NULL;
911 if ((qcache_hits != 0)
912 || (qcache_inserts != 0)
913 || (qcache_not_cached != 0)
914 || (qcache_lowmem_prunes != 0))
915 {
916 derive_submit ("cache_result", "qcache-hits",
917 qcache_hits, db);
918 derive_submit ("cache_result", "qcache-inserts",
919 qcache_inserts, db);
920 derive_submit ("cache_result", "qcache-not_cached",
921 qcache_not_cached, db);
922 derive_submit ("cache_result", "qcache-prunes",
923 qcache_lowmem_prunes, db);
925 gauge_submit ("cache_size", "qcache",
926 qcache_queries_in_cache, db);
927 }
929 if (threads_created != 0)
930 {
931 gauge_submit ("threads", "running",
932 threads_running, db);
933 gauge_submit ("threads", "connected",
934 threads_connected, db);
935 gauge_submit ("threads", "cached",
936 threads_cached, db);
938 derive_submit ("total_threads", "created",
939 threads_created, db);
940 }
942 traffic_submit (traffic_incoming, traffic_outgoing, db);
944 if (mysql_version >= 50600 && db->innodb_stats)
945 mysql_read_innodb_stats (db, con);
947 if (db->master_stats)
948 mysql_read_master_stats (db, con);
950 if ((db->slave_stats) || (db->slave_notif))
951 mysql_read_slave_stats (db, con);
953 return (0);
954 } /* int mysql_read */
956 void module_register (void)
957 {
958 plugin_register_complex_config ("mysql", mysql_config);
959 } /* void module_register */