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"
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;
50 /* mysql_ssl_set params */
51 char *key;
52 char *cert;
53 char *ca;
54 char *capath;
55 char *cipher;
57 char *socket;
58 int port;
59 int timeout;
61 _Bool master_stats;
62 _Bool slave_stats;
63 _Bool innodb_stats;
64 _Bool wsrep_stats;
66 _Bool slave_notif;
67 _Bool slave_io_running;
68 _Bool slave_sql_running;
70 MYSQL *con;
71 _Bool is_connected;
72 };
73 typedef struct mysql_database_s mysql_database_t; /* }}} */
75 static int mysql_read (user_data_t *ud);
77 static void mysql_database_free (void *arg) /* {{{ */
78 {
79 mysql_database_t *db;
81 DEBUG ("mysql plugin: mysql_database_free (arg = %p);", arg);
83 db = arg;
85 if (db == NULL)
86 return;
88 if (db->con != NULL)
89 mysql_close (db->con);
91 sfree (db->alias);
92 sfree (db->host);
93 sfree (db->user);
94 sfree (db->pass);
95 sfree (db->socket);
96 sfree (db->instance);
97 sfree (db->database);
98 sfree (db->key);
99 sfree (db->cert);
100 sfree (db->ca);
101 sfree (db->capath);
102 sfree (db->cipher);
103 sfree (db);
104 } /* }}} void mysql_database_free */
106 /* Configuration handling functions {{{
107 *
108 * <Plugin mysql>
109 * <Database "plugin_instance1">
110 * Host "localhost"
111 * Port 22000
112 * ...
113 * </Database>
114 * </Plugin>
115 */
116 static int mysql_config_database (oconfig_item_t *ci) /* {{{ */
117 {
118 mysql_database_t *db;
119 int status = 0;
121 if ((ci->values_num != 1)
122 || (ci->values[0].type != OCONFIG_TYPE_STRING))
123 {
124 WARNING ("mysql plugin: The `Database' block "
125 "needs exactly one string argument.");
126 return (-1);
127 }
129 db = calloc (1, sizeof (*db));
130 if (db == NULL)
131 {
132 ERROR ("mysql plugin: calloc failed.");
133 return (-1);
134 }
136 /* initialize all the pointers */
137 db->alias = NULL;
138 db->host = NULL;
139 db->user = NULL;
140 db->pass = NULL;
141 db->database = NULL;
142 db->key = NULL;
143 db->cert = NULL;
144 db->ca = NULL;
145 db->capath = NULL;
146 db->cipher = NULL;
148 db->socket = NULL;
149 db->con = NULL;
150 db->timeout = 0;
152 /* trigger a notification, if it's not running */
153 db->slave_io_running = 1;
154 db->slave_sql_running = 1;
156 status = cf_util_get_string (ci, &db->instance);
157 if (status != 0)
158 {
159 sfree (db);
160 return (status);
161 }
162 assert (db->instance != NULL);
164 /* Fill the `mysql_database_t' structure.. */
165 for (int i = 0; i < ci->children_num; i++)
166 {
167 oconfig_item_t *child = ci->children + i;
169 if (strcasecmp ("Alias", child->key) == 0)
170 status = cf_util_get_string (child, &db->alias);
171 else if (strcasecmp ("Host", child->key) == 0)
172 status = cf_util_get_string (child, &db->host);
173 else if (strcasecmp ("User", child->key) == 0)
174 status = cf_util_get_string (child, &db->user);
175 else if (strcasecmp ("Password", child->key) == 0)
176 status = cf_util_get_string (child, &db->pass);
177 else if (strcasecmp ("Port", child->key) == 0)
178 {
179 status = cf_util_get_port_number (child);
180 if (status > 0)
181 {
182 db->port = status;
183 status = 0;
184 }
185 }
186 else if (strcasecmp ("Socket", child->key) == 0)
187 status = cf_util_get_string (child, &db->socket);
188 else if (strcasecmp ("Database", child->key) == 0)
189 status = cf_util_get_string (child, &db->database);
190 else if (strcasecmp ("SSLKey", child->key) == 0)
191 status = cf_util_get_string (child, &db->key);
192 else if (strcasecmp ("SSLCert", child->key) == 0)
193 status = cf_util_get_string (child, &db->cert);
194 else if (strcasecmp ("SSLCA", child->key) == 0)
195 status = cf_util_get_string (child, &db->ca);
196 else if (strcasecmp ("SSLCAPath", child->key) == 0)
197 status = cf_util_get_string (child, &db->capath);
198 else if (strcasecmp ("SSLCipher", child->key) == 0)
199 status = cf_util_get_string (child, &db->cipher);
200 else if (strcasecmp ("ConnectTimeout", child->key) == 0)
201 status = cf_util_get_int (child, &db->timeout);
202 else if (strcasecmp ("MasterStats", child->key) == 0)
203 status = cf_util_get_boolean (child, &db->master_stats);
204 else if (strcasecmp ("SlaveStats", child->key) == 0)
205 status = cf_util_get_boolean (child, &db->slave_stats);
206 else if (strcasecmp ("SlaveNotifications", child->key) == 0)
207 status = cf_util_get_boolean (child, &db->slave_notif);
208 else if (strcasecmp ("InnodbStats", child->key) == 0)
209 status = cf_util_get_boolean (child, &db->innodb_stats);
210 else if (strcasecmp ("WsrepStats", child->key) == 0)
211 status = cf_util_get_boolean (child, &db->wsrep_stats);
212 else
213 {
214 WARNING ("mysql plugin: Option `%s' not allowed here.", child->key);
215 status = -1;
216 }
218 if (status != 0)
219 break;
220 }
222 /* If all went well, register this database for reading */
223 if (status == 0)
224 {
225 user_data_t ud = { 0 };
226 char cb_name[DATA_MAX_NAME_LEN];
228 DEBUG ("mysql plugin: Registering new read callback: %s",
229 (db->database != NULL) ? db->database : "<default>");
231 ud.data = (void *) db;
232 ud.free_func = mysql_database_free;
234 if (db->instance != NULL)
235 ssnprintf (cb_name, sizeof (cb_name), "mysql-%s",
236 db->instance);
237 else
238 sstrncpy (cb_name, "mysql", sizeof (cb_name));
240 plugin_register_complex_read (/* group = */ NULL, cb_name,
241 mysql_read,
242 /* interval = */ 0, &ud);
243 }
244 else
245 {
246 mysql_database_free (db);
247 return (-1);
248 }
250 return (0);
251 } /* }}} int mysql_config_database */
253 static int mysql_config (oconfig_item_t *ci) /* {{{ */
254 {
255 if (ci == NULL)
256 return (EINVAL);
258 /* Fill the `mysql_database_t' structure.. */
259 for (int i = 0; i < ci->children_num; i++)
260 {
261 oconfig_item_t *child = ci->children + i;
263 if (strcasecmp ("Database", child->key) == 0)
264 mysql_config_database (child);
265 else
266 WARNING ("mysql plugin: Option \"%s\" not allowed here.",
267 child->key);
268 }
270 return (0);
271 } /* }}} int mysql_config */
273 /* }}} End of configuration handling functions */
275 static MYSQL *getconnection (mysql_database_t *db)
276 {
277 const char *cipher;
279 if (db->is_connected)
280 {
281 int status;
283 status = mysql_ping (db->con);
284 if (status == 0)
285 return (db->con);
287 WARNING ("mysql plugin: Lost connection to instance \"%s\": %s",
288 db->instance, mysql_error (db->con));
289 }
290 db->is_connected = 0;
292 if (db->con == NULL)
293 {
294 db->con = mysql_init (NULL);
295 if (db->con == NULL)
296 {
297 ERROR ("mysql plugin: mysql_init failed: %s",
298 mysql_error (db->con));
299 return (NULL);
300 }
301 }
303 /* Configure TCP connect timeout (default: 0) */
304 db->con->options.connect_timeout = db->timeout;
306 mysql_ssl_set (db->con, db->key, db->cert, db->ca, db->capath, db->cipher);
308 if (mysql_real_connect (db->con, db->host, db->user, db->pass,
309 db->database, db->port, db->socket, 0) == NULL)
310 {
311 ERROR ("mysql plugin: Failed to connect to database %s "
312 "at server %s: %s",
313 (db->database != NULL) ? db->database : "<none>",
314 (db->host != NULL) ? db->host : "localhost",
315 mysql_error (db->con));
316 return (NULL);
317 }
319 cipher = mysql_get_ssl_cipher (db->con);
321 INFO ("mysql plugin: Successfully connected to database %s "
322 "at server %s with cipher %s "
323 "(server version: %s, protocol version: %d) ",
324 (db->database != NULL) ? db->database : "<none>",
325 mysql_get_host_info (db->con),
326 (cipher != NULL) ? cipher : "<none>",
327 mysql_get_server_info (db->con),
328 mysql_get_proto_info (db->con));
330 db->is_connected = 1;
331 return (db->con);
332 } /* static MYSQL *getconnection (mysql_database_t *db) */
334 static void set_host (mysql_database_t *db, char *buf, size_t buflen)
335 {
336 if (db->alias)
337 sstrncpy (buf, db->alias, buflen);
338 else if ((db->host == NULL)
339 || (strcmp ("", db->host) == 0)
340 || (strcmp ("127.0.0.1", db->host) == 0)
341 || (strcmp ("localhost", db->host) == 0))
342 sstrncpy (buf, hostname_g, buflen);
343 else
344 sstrncpy (buf, db->host, buflen);
345 } /* void set_host */
347 static void submit (const char *type, const char *type_instance,
348 value_t *values, size_t values_len, mysql_database_t *db)
349 {
350 value_list_t vl = VALUE_LIST_INIT;
352 vl.values = values;
353 vl.values_len = values_len;
355 set_host (db, vl.host, sizeof (vl.host));
357 sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
359 /* Assured by "mysql_config_database" */
360 assert (db->instance != NULL);
361 sstrncpy (vl.plugin_instance, db->instance, sizeof (vl.plugin_instance));
363 sstrncpy (vl.type, type, sizeof (vl.type));
364 if (type_instance != NULL)
365 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
367 plugin_dispatch_values (&vl);
368 } /* submit */
370 static void counter_submit (const char *type, const char *type_instance,
371 derive_t value, mysql_database_t *db)
372 {
373 value_t values[1];
375 values[0].derive = value;
376 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
377 } /* void counter_submit */
379 static void gauge_submit (const char *type, const char *type_instance,
380 gauge_t value, mysql_database_t *db)
381 {
382 value_t values[1];
384 values[0].gauge = value;
385 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
386 } /* void gauge_submit */
388 static void derive_submit (const char *type, const char *type_instance,
389 derive_t value, mysql_database_t *db)
390 {
391 value_t values[1];
393 values[0].derive = value;
394 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
395 } /* void derive_submit */
397 static void traffic_submit (derive_t rx, derive_t tx, mysql_database_t *db)
398 {
399 value_t values[2];
401 values[0].derive = rx;
402 values[1].derive = tx;
404 submit ("mysql_octets", NULL, values, STATIC_ARRAY_SIZE (values), db);
405 } /* void traffic_submit */
407 static MYSQL_RES *exec_query (MYSQL *con, const char *query)
408 {
409 MYSQL_RES *res;
411 int query_len = strlen (query);
413 if (mysql_real_query (con, query, query_len))
414 {
415 ERROR ("mysql plugin: Failed to execute query: %s",
416 mysql_error (con));
417 INFO ("mysql plugin: SQL query was: %s", query);
418 return (NULL);
419 }
421 res = mysql_store_result (con);
422 if (res == NULL)
423 {
424 ERROR ("mysql plugin: Failed to store query result: %s",
425 mysql_error (con));
426 INFO ("mysql plugin: SQL query was: %s", query);
427 return (NULL);
428 }
430 return (res);
431 } /* exec_query */
433 static int mysql_read_master_stats (mysql_database_t *db, MYSQL *con)
434 {
435 MYSQL_RES *res;
436 MYSQL_ROW row;
438 const char *query;
439 int field_num;
440 unsigned long long position;
442 query = "SHOW MASTER STATUS";
444 res = exec_query (con, query);
445 if (res == NULL)
446 return (-1);
448 row = mysql_fetch_row (res);
449 if (row == NULL)
450 {
451 ERROR ("mysql plugin: Failed to get master statistics: "
452 "`%s' did not return any rows.", query);
453 mysql_free_result (res);
454 return (-1);
455 }
457 field_num = mysql_num_fields (res);
458 if (field_num < 2)
459 {
460 ERROR ("mysql plugin: Failed to get master statistics: "
461 "`%s' returned less than two columns.", query);
462 mysql_free_result (res);
463 return (-1);
464 }
466 position = atoll (row[1]);
467 counter_submit ("mysql_log_position", "master-bin", position, db);
469 row = mysql_fetch_row (res);
470 if (row != NULL)
471 WARNING ("mysql plugin: `%s' returned more than one row - "
472 "ignoring further results.", query);
474 mysql_free_result (res);
476 return (0);
477 } /* mysql_read_master_stats */
479 static int mysql_read_slave_stats (mysql_database_t *db, MYSQL *con)
480 {
481 MYSQL_RES *res;
482 MYSQL_ROW row;
484 const char *query;
485 int field_num;
487 /* WTF? libmysqlclient does not seem to provide any means to
488 * translate a column name to a column index ... :-/ */
489 const int READ_MASTER_LOG_POS_IDX = 6;
490 const int SLAVE_IO_RUNNING_IDX = 10;
491 const int SLAVE_SQL_RUNNING_IDX = 11;
492 const int EXEC_MASTER_LOG_POS_IDX = 21;
493 const int SECONDS_BEHIND_MASTER_IDX = 32;
495 query = "SHOW SLAVE STATUS";
497 res = exec_query (con, query);
498 if (res == NULL)
499 return (-1);
501 row = mysql_fetch_row (res);
502 if (row == NULL)
503 {
504 ERROR ("mysql plugin: Failed to get slave statistics: "
505 "`%s' did not return any rows.", query);
506 mysql_free_result (res);
507 return (-1);
508 }
510 field_num = mysql_num_fields (res);
511 if (field_num < 33)
512 {
513 ERROR ("mysql plugin: Failed to get slave statistics: "
514 "`%s' returned less than 33 columns.", query);
515 mysql_free_result (res);
516 return (-1);
517 }
519 if (db->slave_stats)
520 {
521 unsigned long long counter;
522 double gauge;
524 counter = atoll (row[READ_MASTER_LOG_POS_IDX]);
525 counter_submit ("mysql_log_position", "slave-read", counter, db);
527 counter = atoll (row[EXEC_MASTER_LOG_POS_IDX]);
528 counter_submit ("mysql_log_position", "slave-exec", counter, db);
530 if (row[SECONDS_BEHIND_MASTER_IDX] != NULL)
531 {
532 gauge = atof (row[SECONDS_BEHIND_MASTER_IDX]);
533 gauge_submit ("time_offset", NULL, gauge, db);
534 }
535 }
537 if (db->slave_notif)
538 {
539 notification_t n = { 0, cdtime (), "", "",
540 "mysql", "", "time_offset", "", NULL };
542 char *io, *sql;
544 io = row[SLAVE_IO_RUNNING_IDX];
545 sql = row[SLAVE_SQL_RUNNING_IDX];
547 set_host (db, n.host, sizeof (n.host));
549 /* Assured by "mysql_config_database" */
550 assert (db->instance != NULL);
551 sstrncpy (n.plugin_instance, db->instance, sizeof (n.plugin_instance));
553 if (((io == NULL) || (strcasecmp (io, "yes") != 0))
554 && (db->slave_io_running))
555 {
556 n.severity = NOTIF_WARNING;
557 ssnprintf (n.message, sizeof (n.message),
558 "slave I/O thread not started or not connected to master");
559 plugin_dispatch_notification (&n);
560 db->slave_io_running = 0;
561 }
562 else if (((io != NULL) && (strcasecmp (io, "yes") == 0))
563 && (! db->slave_io_running))
564 {
565 n.severity = NOTIF_OKAY;
566 ssnprintf (n.message, sizeof (n.message),
567 "slave I/O thread started and connected to master");
568 plugin_dispatch_notification (&n);
569 db->slave_io_running = 1;
570 }
572 if (((sql == NULL) || (strcasecmp (sql, "yes") != 0))
573 && (db->slave_sql_running))
574 {
575 n.severity = NOTIF_WARNING;
576 ssnprintf (n.message, sizeof (n.message),
577 "slave SQL thread not started");
578 plugin_dispatch_notification (&n);
579 db->slave_sql_running = 0;
580 }
581 else if (((sql != NULL) && (strcasecmp (sql, "yes") == 0))
582 && (! db->slave_sql_running))
583 {
584 n.severity = NOTIF_OKAY;
585 ssnprintf (n.message, sizeof (n.message),
586 "slave SQL thread started");
587 plugin_dispatch_notification (&n);
588 db->slave_sql_running = 1;
589 }
590 }
592 row = mysql_fetch_row (res);
593 if (row != NULL)
594 WARNING ("mysql plugin: `%s' returned more than one row - "
595 "ignoring further results.", query);
597 mysql_free_result (res);
599 return (0);
600 } /* mysql_read_slave_stats */
602 static int mysql_read_innodb_stats (mysql_database_t *db, MYSQL *con)
603 {
604 MYSQL_RES *res;
605 MYSQL_ROW row;
607 const char *query;
608 struct {
609 const char *key;
610 const char *type;
611 int ds_type;
612 } metrics[] = {
613 { "metadata_mem_pool_size", "bytes", DS_TYPE_GAUGE },
614 { "lock_deadlocks", "mysql_locks", DS_TYPE_DERIVE },
615 { "lock_timeouts", "mysql_locks", DS_TYPE_DERIVE },
616 { "lock_row_lock_current_waits", "mysql_locks", DS_TYPE_DERIVE },
617 { "buffer_pool_size", "bytes", DS_TYPE_GAUGE },
619 { "os_log_bytes_written", "operations", DS_TYPE_DERIVE },
620 { "os_log_pending_fsyncs", "operations", DS_TYPE_DERIVE },
621 { "os_log_pending_writes", "operations", DS_TYPE_DERIVE },
623 { "trx_rseg_history_len", "gauge", DS_TYPE_GAUGE },
625 { "adaptive_hash_searches", "operations", DS_TYPE_DERIVE },
627 { "file_num_open_files", "gauge", DS_TYPE_GAUGE },
629 { "ibuf_merges_insert", "operations", DS_TYPE_DERIVE },
630 { "ibuf_merges_delete_mark", "operations", DS_TYPE_DERIVE },
631 { "ibuf_merges_delete", "operations", DS_TYPE_DERIVE },
632 { "ibuf_merges_discard_insert", "operations", DS_TYPE_DERIVE },
633 { "ibuf_merges_discard_delete_mark", "operations", DS_TYPE_DERIVE },
634 { "ibuf_merges_discard_delete", "operations", DS_TYPE_DERIVE },
635 { "ibuf_merges_discard_merges", "operations", DS_TYPE_DERIVE },
636 { "ibuf_size", "bytes", DS_TYPE_GAUGE },
638 { "innodb_activity_count", "gauge", DS_TYPE_GAUGE },
640 { "innodb_rwlock_s_spin_waits", "operations", DS_TYPE_DERIVE },
641 { "innodb_rwlock_x_spin_waits", "operations", DS_TYPE_DERIVE },
642 { "innodb_rwlock_s_spin_rounds", "operations", DS_TYPE_DERIVE },
643 { "innodb_rwlock_x_spin_rounds", "operations", DS_TYPE_DERIVE },
644 { "innodb_rwlock_s_os_waits", "operations", DS_TYPE_DERIVE },
645 { "innodb_rwlock_x_os_waits", "operations", DS_TYPE_DERIVE },
647 { "dml_reads", "operations", DS_TYPE_DERIVE },
648 { "dml_inserts", "operations", DS_TYPE_DERIVE },
649 { "dml_deletes", "operations", DS_TYPE_DERIVE },
650 { "dml_updates", "operations", DS_TYPE_DERIVE },
652 { NULL, NULL, 0}
653 };
655 query = "SELECT name, count, type FROM information_schema.innodb_metrics WHERE status = 'enabled'";
657 res = exec_query (con, query);
658 if (res == NULL)
659 return (-1);
661 while ((row = mysql_fetch_row (res)))
662 {
663 int i;
664 char *key;
665 unsigned long long val;
667 key = row[0];
668 val = atoll (row[1]);
670 for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
671 ;
673 if (metrics[i].key == NULL)
674 continue;
676 switch (metrics[i].ds_type) {
677 case DS_TYPE_COUNTER:
678 counter_submit(metrics[i].type, key, (counter_t)val, db);
679 break;
680 case DS_TYPE_GAUGE:
681 gauge_submit(metrics[i].type, key, (gauge_t)val, db);
682 break;
683 case DS_TYPE_DERIVE:
684 derive_submit(metrics[i].type, key, (derive_t)val, db);
685 break;
686 }
687 }
689 mysql_free_result(res);
690 return (0);
691 }
693 static int mysql_read_wsrep_stats (mysql_database_t *db, MYSQL *con)
694 {
695 MYSQL_RES *res;
696 MYSQL_ROW row;
698 const char *query;
699 struct {
700 const char *key;
701 const char *type;
702 int ds_type;
703 } metrics[] = {
705 { "wsrep_apply_oooe", "operations", DS_TYPE_DERIVE },
706 { "wsrep_apply_oool", "operations", DS_TYPE_DERIVE },
707 { "wsrep_causal_reads", "operations", DS_TYPE_DERIVE },
708 { "wsrep_commit_oooe", "operations", DS_TYPE_DERIVE },
709 { "wsrep_commit_oool", "operations", DS_TYPE_DERIVE },
710 { "wsrep_flow_control_recv", "operations", DS_TYPE_DERIVE },
711 { "wsrep_flow_control_sent", "operations", DS_TYPE_DERIVE },
712 { "wsrep_flow_control_paused", "operations", DS_TYPE_DERIVE },
713 { "wsrep_local_bf_aborts", "operations", DS_TYPE_DERIVE },
714 { "wsrep_local_cert_failures", "operations", DS_TYPE_DERIVE },
715 { "wsrep_local_commits", "operations", DS_TYPE_DERIVE },
716 { "wsrep_local_replays", "operations", DS_TYPE_DERIVE },
717 { "wsrep_received", "operations", DS_TYPE_DERIVE },
718 { "wsrep_replicated", "operations", DS_TYPE_DERIVE },
720 { "wsrep_received_bytes", "total_bytes", DS_TYPE_DERIVE },
721 { "wsrep_replicated_bytes", "total_bytes", DS_TYPE_DERIVE },
723 { "wsrep_apply_window", "gauge", DS_TYPE_GAUGE },
724 { "wsrep_commit_window", "gauge", DS_TYPE_GAUGE },
726 { "wsrep_cluster_size", "gauge", DS_TYPE_GAUGE },
727 { "wsrep_cert_deps_distance", "gauge", DS_TYPE_GAUGE },
729 { "wsrep_local_recv_queue", "queue_length", DS_TYPE_GAUGE },
730 { "wsrep_local_send_queue", "queue_length", DS_TYPE_GAUGE },
732 { NULL, NULL, 0}
734 };
736 query = "SHOW GLOBAL STATUS LIKE 'wsrep_%'";
738 res = exec_query (con, query);
739 if (res == NULL)
740 return (-1);
742 row = mysql_fetch_row (res);
743 if (row == NULL)
744 {
745 ERROR ("mysql plugin: Failed to get wsrep statistics: "
746 "`%s' did not return any rows.", query);
747 mysql_free_result (res);
748 return (-1);
749 }
751 while ((row = mysql_fetch_row (res)))
752 {
753 int i;
754 char *key;
755 unsigned long long val;
757 key = row[0];
758 val = atoll (row[1]);
760 for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
761 ;
763 if (metrics[i].key == NULL)
764 continue;
766 switch (metrics[i].ds_type) {
767 case DS_TYPE_GAUGE:
768 gauge_submit(metrics[i].type, key, (gauge_t)val, db);
769 break;
770 case DS_TYPE_DERIVE:
771 derive_submit(metrics[i].type, key, (derive_t)val, db);
772 break;
773 }
774 }
776 mysql_free_result(res);
777 return (0);
778 } /* mysql_read_wsrep_stats */
780 static int mysql_read (user_data_t *ud)
781 {
782 mysql_database_t *db;
783 MYSQL *con;
784 MYSQL_RES *res;
785 MYSQL_ROW row;
786 const char *query;
788 derive_t qcache_hits = 0;
789 derive_t qcache_inserts = 0;
790 derive_t qcache_not_cached = 0;
791 derive_t qcache_lowmem_prunes = 0;
792 gauge_t qcache_queries_in_cache = NAN;
794 gauge_t threads_running = NAN;
795 gauge_t threads_connected = NAN;
796 gauge_t threads_cached = NAN;
797 derive_t threads_created = 0;
799 unsigned long long traffic_incoming = 0ULL;
800 unsigned long long traffic_outgoing = 0ULL;
801 unsigned long mysql_version = 0ULL;
803 if ((ud == NULL) || (ud->data == NULL))
804 {
805 ERROR ("mysql plugin: mysql_database_read: Invalid user data.");
806 return (-1);
807 }
809 db = (mysql_database_t *) ud->data;
811 /* An error message will have been printed in this case */
812 if ((con = getconnection (db)) == NULL)
813 return (-1);
815 mysql_version = mysql_get_server_version(con);
817 query = "SHOW STATUS";
818 if (mysql_version >= 50002)
819 query = "SHOW GLOBAL STATUS";
821 res = exec_query (con, query);
822 if (res == NULL)
823 return (-1);
825 while ((row = mysql_fetch_row (res)))
826 {
827 char *key;
828 unsigned long long val;
830 key = row[0];
831 val = atoll (row[1]);
833 if (strncmp (key, "Com_",
834 strlen ("Com_")) == 0)
835 {
836 if (val == 0ULL)
837 continue;
839 /* Ignore `prepared statements' */
840 if (strncmp (key, "Com_stmt_", strlen ("Com_stmt_")) != 0)
841 counter_submit ("mysql_commands",
842 key + strlen ("Com_"),
843 val, db);
844 }
845 else if (strncmp (key, "Handler_",
846 strlen ("Handler_")) == 0)
847 {
848 if (val == 0ULL)
849 continue;
851 counter_submit ("mysql_handler",
852 key + strlen ("Handler_"),
853 val, db);
854 }
855 else if (strncmp (key, "Qcache_",
856 strlen ("Qcache_")) == 0)
857 {
858 if (strcmp (key, "Qcache_hits") == 0)
859 qcache_hits = (derive_t) val;
860 else if (strcmp (key, "Qcache_inserts") == 0)
861 qcache_inserts = (derive_t) val;
862 else if (strcmp (key, "Qcache_not_cached") == 0)
863 qcache_not_cached = (derive_t) val;
864 else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
865 qcache_lowmem_prunes = (derive_t) val;
866 else if (strcmp (key, "Qcache_queries_in_cache") == 0)
867 qcache_queries_in_cache = (gauge_t) val;
868 }
869 else if (strncmp (key, "Bytes_",
870 strlen ("Bytes_")) == 0)
871 {
872 if (strcmp (key, "Bytes_received") == 0)
873 traffic_incoming += val;
874 else if (strcmp (key, "Bytes_sent") == 0)
875 traffic_outgoing += val;
876 }
877 else if (strncmp (key, "Threads_",
878 strlen ("Threads_")) == 0)
879 {
880 if (strcmp (key, "Threads_running") == 0)
881 threads_running = (gauge_t) val;
882 else if (strcmp (key, "Threads_connected") == 0)
883 threads_connected = (gauge_t) val;
884 else if (strcmp (key, "Threads_cached") == 0)
885 threads_cached = (gauge_t) val;
886 else if (strcmp (key, "Threads_created") == 0)
887 threads_created = (derive_t) val;
888 }
889 else if (strncmp (key, "Table_locks_",
890 strlen ("Table_locks_")) == 0)
891 {
892 counter_submit ("mysql_locks",
893 key + strlen ("Table_locks_"),
894 val, db);
895 }
896 else if (db->innodb_stats && strncmp (key, "Innodb_", strlen ("Innodb_")) == 0)
897 {
898 /* buffer pool */
899 if (strcmp (key, "Innodb_buffer_pool_pages_data") == 0)
900 gauge_submit ("mysql_bpool_pages", "data", val, db);
901 else if (strcmp (key, "Innodb_buffer_pool_pages_dirty") == 0)
902 gauge_submit ("mysql_bpool_pages", "dirty", val, db);
903 else if (strcmp (key, "Innodb_buffer_pool_pages_flushed") == 0)
904 counter_submit ("mysql_bpool_counters", "pages_flushed", val, db);
905 else if (strcmp (key, "Innodb_buffer_pool_pages_free") == 0)
906 gauge_submit ("mysql_bpool_pages", "free", val, db);
907 else if (strcmp (key, "Innodb_buffer_pool_pages_misc") == 0)
908 gauge_submit ("mysql_bpool_pages", "misc", val, db);
909 else if (strcmp (key, "Innodb_buffer_pool_pages_total") == 0)
910 gauge_submit ("mysql_bpool_pages", "total", val, db);
911 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_rnd") == 0)
912 counter_submit ("mysql_bpool_counters", "read_ahead_rnd", val, db);
913 else if (strcmp (key, "Innodb_buffer_pool_read_ahead") == 0)
914 counter_submit ("mysql_bpool_counters", "read_ahead", val, db);
915 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_evicted") == 0)
916 counter_submit ("mysql_bpool_counters", "read_ahead_evicted", val, db);
917 else if (strcmp (key, "Innodb_buffer_pool_read_requests") == 0)
918 counter_submit ("mysql_bpool_counters", "read_requests", val, db);
919 else if (strcmp (key, "Innodb_buffer_pool_reads") == 0)
920 counter_submit ("mysql_bpool_counters", "reads", val, db);
921 else if (strcmp (key, "Innodb_buffer_pool_wait_free") == 0)
922 counter_submit ("mysql_bpool_counters", "wait_free", val, db);
923 else if (strcmp (key, "Innodb_buffer_pool_write_requests") == 0)
924 counter_submit ("mysql_bpool_counters", "write_requests", val, db);
925 else if (strcmp (key, "Innodb_buffer_pool_bytes_data") == 0)
926 gauge_submit ("mysql_bpool_bytes", "data", val, db);
927 else if (strcmp (key, "Innodb_buffer_pool_bytes_dirty") == 0)
928 gauge_submit ("mysql_bpool_bytes", "dirty", val, db);
930 /* data */
931 if (strcmp (key, "Innodb_data_fsyncs") == 0)
932 counter_submit ("mysql_innodb_data", "fsyncs", val, db);
933 else if (strcmp (key, "Innodb_data_read") == 0)
934 counter_submit ("mysql_innodb_data", "read", val, db);
935 else if (strcmp (key, "Innodb_data_reads") == 0)
936 counter_submit ("mysql_innodb_data", "reads", val, db);
937 else if (strcmp (key, "Innodb_data_writes") == 0)
938 counter_submit ("mysql_innodb_data", "writes", val, db);
939 else if (strcmp (key, "Innodb_data_written") == 0)
940 counter_submit ("mysql_innodb_data", "written", val, db);
942 /* double write */
943 else if (strcmp (key, "Innodb_dblwr_writes") == 0)
944 counter_submit ("mysql_innodb_dblwr", "writes", val, db);
945 else if (strcmp (key, "Innodb_dblwr_pages_written") == 0)
946 counter_submit ("mysql_innodb_dblwr", "written", val, db);
947 else if (strcmp (key, "Innodb_dblwr_page_size") == 0)
948 gauge_submit ("mysql_innodb_dblwr", "page_size", val, db);
950 /* log */
951 else if (strcmp (key, "Innodb_log_waits") == 0)
952 counter_submit ("mysql_innodb_log", "waits", val, db);
953 else if (strcmp (key, "Innodb_log_write_requests") == 0)
954 counter_submit ("mysql_innodb_log", "write_requests", val, db);
955 else if (strcmp (key, "Innodb_log_writes") == 0)
956 counter_submit ("mysql_innodb_log", "writes", val, db);
957 else if (strcmp (key, "Innodb_os_log_fsyncs") == 0)
958 counter_submit ("mysql_innodb_log", "fsyncs", val, db);
959 else if (strcmp (key, "Innodb_os_log_written") == 0)
960 counter_submit ("mysql_innodb_log", "written", val, db);
962 /* pages */
963 else if (strcmp (key, "Innodb_pages_created") == 0)
964 counter_submit ("mysql_innodb_pages", "created", val, db);
965 else if (strcmp (key, "Innodb_pages_read") == 0)
966 counter_submit ("mysql_innodb_pages", "read", val, db);
967 else if (strcmp (key, "Innodb_pages_written") == 0)
968 counter_submit ("mysql_innodb_pages", "written", val, db);
970 /* row lock */
971 else if (strcmp (key, "Innodb_row_lock_time") == 0)
972 counter_submit ("mysql_innodb_row_lock", "time", val, db);
973 else if (strcmp (key, "Innodb_row_lock_waits") == 0)
974 counter_submit ("mysql_innodb_row_lock", "waits", val, db);
976 /* rows */
977 else if (strcmp (key, "Innodb_rows_deleted") == 0)
978 counter_submit ("mysql_innodb_rows", "deleted", val, db);
979 else if (strcmp (key, "Innodb_rows_inserted") == 0)
980 counter_submit ("mysql_innodb_rows", "inserted", val, db);
981 else if (strcmp (key, "Innodb_rows_read") == 0)
982 counter_submit ("mysql_innodb_rows", "read", val, db);
983 else if (strcmp (key, "Innodb_rows_updated") == 0)
984 counter_submit ("mysql_innodb_rows", "updated", val, db);
985 }
986 else if (strncmp (key, "Select_", strlen ("Select_")) == 0)
987 {
988 counter_submit ("mysql_select", key + strlen ("Select_"),
989 val, db);
990 }
991 else if (strncmp (key, "Sort_", strlen ("Sort_")) == 0)
992 {
993 if (strcmp (key, "Sort_merge_passes") == 0)
994 counter_submit ("mysql_sort_merge_passes", NULL, val, db);
995 else if (strcmp (key, "Sort_rows") == 0)
996 counter_submit ("mysql_sort_rows", NULL, val, db);
997 else if (strcmp (key, "Sort_range") == 0)
998 counter_submit ("mysql_sort", "range", val, db);
999 else if (strcmp (key, "Sort_scan") == 0)
1000 counter_submit ("mysql_sort", "scan", val, db);
1002 }
1003 else if (strncmp (key, "Slow_queries", strlen ("Slow_queries")) == 0)
1004 {
1005 counter_submit ("mysql_slow_queries", NULL , val, db);
1006 }
1007 }
1008 mysql_free_result (res); res = NULL;
1010 if ((qcache_hits != 0)
1011 || (qcache_inserts != 0)
1012 || (qcache_not_cached != 0)
1013 || (qcache_lowmem_prunes != 0))
1014 {
1015 derive_submit ("cache_result", "qcache-hits",
1016 qcache_hits, db);
1017 derive_submit ("cache_result", "qcache-inserts",
1018 qcache_inserts, db);
1019 derive_submit ("cache_result", "qcache-not_cached",
1020 qcache_not_cached, db);
1021 derive_submit ("cache_result", "qcache-prunes",
1022 qcache_lowmem_prunes, db);
1024 gauge_submit ("cache_size", "qcache",
1025 qcache_queries_in_cache, db);
1026 }
1028 if (threads_created != 0)
1029 {
1030 gauge_submit ("threads", "running",
1031 threads_running, db);
1032 gauge_submit ("threads", "connected",
1033 threads_connected, db);
1034 gauge_submit ("threads", "cached",
1035 threads_cached, db);
1037 derive_submit ("total_threads", "created",
1038 threads_created, db);
1039 }
1041 traffic_submit (traffic_incoming, traffic_outgoing, db);
1043 if (mysql_version >= 50600 && db->innodb_stats)
1044 mysql_read_innodb_stats (db, con);
1046 if (db->master_stats)
1047 mysql_read_master_stats (db, con);
1049 if ((db->slave_stats) || (db->slave_notif))
1050 mysql_read_slave_stats (db, con);
1052 if (db->wsrep_stats)
1053 mysql_read_wsrep_stats (db, con);
1055 return (0);
1056 } /* int mysql_read */
1058 void module_register (void)
1059 {
1060 plugin_register_complex_config ("mysql", mysql_config);
1061 } /* void module_register */