3bd8cb98159cf853d2e815a442c0de4575844d93
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 char cb_name[DATA_MAX_NAME_LEN];
227 DEBUG ("mysql plugin: Registering new read callback: %s",
228 (db->database != NULL) ? db->database : "<default>");
230 if (db->instance != NULL)
231 ssnprintf (cb_name, sizeof (cb_name), "mysql-%s",
232 db->instance);
233 else
234 sstrncpy (cb_name, "mysql", sizeof (cb_name));
236 plugin_register_complex_read (/* group = */ NULL, cb_name,
237 mysql_read, /* interval = */ 0, &(user_data_t) {
238 .data = db,
239 .free_func = mysql_database_free,
240 });
241 }
242 else
243 {
244 mysql_database_free (db);
245 return (-1);
246 }
248 return (0);
249 } /* }}} int mysql_config_database */
251 static int mysql_config (oconfig_item_t *ci) /* {{{ */
252 {
253 if (ci == NULL)
254 return (EINVAL);
256 /* Fill the `mysql_database_t' structure.. */
257 for (int i = 0; i < ci->children_num; i++)
258 {
259 oconfig_item_t *child = ci->children + i;
261 if (strcasecmp ("Database", child->key) == 0)
262 mysql_config_database (child);
263 else
264 WARNING ("mysql plugin: Option \"%s\" not allowed here.",
265 child->key);
266 }
268 return (0);
269 } /* }}} int mysql_config */
271 /* }}} End of configuration handling functions */
273 static MYSQL *getconnection (mysql_database_t *db)
274 {
275 const char *cipher;
277 if (db->is_connected)
278 {
279 int status;
281 status = mysql_ping (db->con);
282 if (status == 0)
283 return (db->con);
285 WARNING ("mysql plugin: Lost connection to instance \"%s\": %s",
286 db->instance, mysql_error (db->con));
287 }
288 db->is_connected = 0;
290 if (db->con == NULL)
291 {
292 db->con = mysql_init (NULL);
293 if (db->con == NULL)
294 {
295 ERROR ("mysql plugin: mysql_init failed: %s",
296 mysql_error (db->con));
297 return (NULL);
298 }
299 }
301 /* Configure TCP connect timeout (default: 0) */
302 db->con->options.connect_timeout = db->timeout;
304 mysql_ssl_set (db->con, db->key, db->cert, db->ca, db->capath, db->cipher);
306 if (mysql_real_connect (db->con, db->host, db->user, db->pass,
307 db->database, db->port, db->socket, 0) == NULL)
308 {
309 ERROR ("mysql plugin: Failed to connect to database %s "
310 "at server %s: %s",
311 (db->database != NULL) ? db->database : "<none>",
312 (db->host != NULL) ? db->host : "localhost",
313 mysql_error (db->con));
314 return (NULL);
315 }
317 cipher = mysql_get_ssl_cipher (db->con);
319 INFO ("mysql plugin: Successfully connected to database %s "
320 "at server %s with cipher %s "
321 "(server version: %s, protocol version: %d) ",
322 (db->database != NULL) ? db->database : "<none>",
323 mysql_get_host_info (db->con),
324 (cipher != NULL) ? cipher : "<none>",
325 mysql_get_server_info (db->con),
326 mysql_get_proto_info (db->con));
328 db->is_connected = 1;
329 return (db->con);
330 } /* static MYSQL *getconnection (mysql_database_t *db) */
332 static void set_host (mysql_database_t *db, char *buf, size_t buflen)
333 {
334 if (db->alias)
335 sstrncpy (buf, db->alias, buflen);
336 else if ((db->host == NULL)
337 || (strcmp ("", db->host) == 0)
338 || (strcmp ("127.0.0.1", db->host) == 0)
339 || (strcmp ("localhost", db->host) == 0))
340 sstrncpy (buf, hostname_g, buflen);
341 else
342 sstrncpy (buf, db->host, buflen);
343 } /* void set_host */
345 static void submit (const char *type, const char *type_instance,
346 value_t *values, size_t values_len, mysql_database_t *db)
347 {
348 value_list_t vl = VALUE_LIST_INIT;
350 vl.values = values;
351 vl.values_len = values_len;
353 set_host (db, vl.host, sizeof (vl.host));
355 sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
357 /* Assured by "mysql_config_database" */
358 assert (db->instance != NULL);
359 sstrncpy (vl.plugin_instance, db->instance, sizeof (vl.plugin_instance));
361 sstrncpy (vl.type, type, sizeof (vl.type));
362 if (type_instance != NULL)
363 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
365 plugin_dispatch_values (&vl);
366 } /* submit */
368 static void counter_submit (const char *type, const char *type_instance,
369 derive_t value, mysql_database_t *db)
370 {
371 value_t values[1];
373 values[0].derive = value;
374 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
375 } /* void counter_submit */
377 static void gauge_submit (const char *type, const char *type_instance,
378 gauge_t value, mysql_database_t *db)
379 {
380 value_t values[1];
382 values[0].gauge = value;
383 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
384 } /* void gauge_submit */
386 static void derive_submit (const char *type, const char *type_instance,
387 derive_t value, mysql_database_t *db)
388 {
389 value_t values[1];
391 values[0].derive = value;
392 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
393 } /* void derive_submit */
395 static void traffic_submit (derive_t rx, derive_t tx, mysql_database_t *db)
396 {
397 value_t values[2];
399 values[0].derive = rx;
400 values[1].derive = tx;
402 submit ("mysql_octets", NULL, values, STATIC_ARRAY_SIZE (values), db);
403 } /* void traffic_submit */
405 static MYSQL_RES *exec_query (MYSQL *con, const char *query)
406 {
407 MYSQL_RES *res;
409 int query_len = strlen (query);
411 if (mysql_real_query (con, query, query_len))
412 {
413 ERROR ("mysql plugin: Failed to execute query: %s",
414 mysql_error (con));
415 INFO ("mysql plugin: SQL query was: %s", query);
416 return (NULL);
417 }
419 res = mysql_store_result (con);
420 if (res == NULL)
421 {
422 ERROR ("mysql plugin: Failed to store query result: %s",
423 mysql_error (con));
424 INFO ("mysql plugin: SQL query was: %s", query);
425 return (NULL);
426 }
428 return (res);
429 } /* exec_query */
431 static int mysql_read_master_stats (mysql_database_t *db, MYSQL *con)
432 {
433 MYSQL_RES *res;
434 MYSQL_ROW row;
436 const char *query;
437 int field_num;
438 unsigned long long position;
440 query = "SHOW MASTER STATUS";
442 res = exec_query (con, query);
443 if (res == NULL)
444 return (-1);
446 row = mysql_fetch_row (res);
447 if (row == NULL)
448 {
449 ERROR ("mysql plugin: Failed to get master statistics: "
450 "`%s' did not return any rows.", query);
451 mysql_free_result (res);
452 return (-1);
453 }
455 field_num = mysql_num_fields (res);
456 if (field_num < 2)
457 {
458 ERROR ("mysql plugin: Failed to get master statistics: "
459 "`%s' returned less than two columns.", query);
460 mysql_free_result (res);
461 return (-1);
462 }
464 position = atoll (row[1]);
465 counter_submit ("mysql_log_position", "master-bin", position, db);
467 row = mysql_fetch_row (res);
468 if (row != NULL)
469 WARNING ("mysql plugin: `%s' returned more than one row - "
470 "ignoring further results.", query);
472 mysql_free_result (res);
474 return (0);
475 } /* mysql_read_master_stats */
477 static int mysql_read_slave_stats (mysql_database_t *db, MYSQL *con)
478 {
479 MYSQL_RES *res;
480 MYSQL_ROW row;
482 const char *query;
483 int field_num;
485 /* WTF? libmysqlclient does not seem to provide any means to
486 * translate a column name to a column index ... :-/ */
487 const int READ_MASTER_LOG_POS_IDX = 6;
488 const int SLAVE_IO_RUNNING_IDX = 10;
489 const int SLAVE_SQL_RUNNING_IDX = 11;
490 const int EXEC_MASTER_LOG_POS_IDX = 21;
491 const int SECONDS_BEHIND_MASTER_IDX = 32;
493 query = "SHOW SLAVE STATUS";
495 res = exec_query (con, query);
496 if (res == NULL)
497 return (-1);
499 row = mysql_fetch_row (res);
500 if (row == NULL)
501 {
502 ERROR ("mysql plugin: Failed to get slave statistics: "
503 "`%s' did not return any rows.", query);
504 mysql_free_result (res);
505 return (-1);
506 }
508 field_num = mysql_num_fields (res);
509 if (field_num < 33)
510 {
511 ERROR ("mysql plugin: Failed to get slave statistics: "
512 "`%s' returned less than 33 columns.", query);
513 mysql_free_result (res);
514 return (-1);
515 }
517 if (db->slave_stats)
518 {
519 unsigned long long counter;
520 double gauge;
522 counter = atoll (row[READ_MASTER_LOG_POS_IDX]);
523 counter_submit ("mysql_log_position", "slave-read", counter, db);
525 counter = atoll (row[EXEC_MASTER_LOG_POS_IDX]);
526 counter_submit ("mysql_log_position", "slave-exec", counter, db);
528 if (row[SECONDS_BEHIND_MASTER_IDX] != NULL)
529 {
530 gauge = atof (row[SECONDS_BEHIND_MASTER_IDX]);
531 gauge_submit ("time_offset", NULL, gauge, db);
532 }
533 }
535 if (db->slave_notif)
536 {
537 notification_t n = { 0, cdtime (), "", "",
538 "mysql", "", "time_offset", "", NULL };
540 char *io, *sql;
542 io = row[SLAVE_IO_RUNNING_IDX];
543 sql = row[SLAVE_SQL_RUNNING_IDX];
545 set_host (db, n.host, sizeof (n.host));
547 /* Assured by "mysql_config_database" */
548 assert (db->instance != NULL);
549 sstrncpy (n.plugin_instance, db->instance, sizeof (n.plugin_instance));
551 if (((io == NULL) || (strcasecmp (io, "yes") != 0))
552 && (db->slave_io_running))
553 {
554 n.severity = NOTIF_WARNING;
555 ssnprintf (n.message, sizeof (n.message),
556 "slave I/O thread not started or not connected to master");
557 plugin_dispatch_notification (&n);
558 db->slave_io_running = 0;
559 }
560 else if (((io != NULL) && (strcasecmp (io, "yes") == 0))
561 && (! db->slave_io_running))
562 {
563 n.severity = NOTIF_OKAY;
564 ssnprintf (n.message, sizeof (n.message),
565 "slave I/O thread started and connected to master");
566 plugin_dispatch_notification (&n);
567 db->slave_io_running = 1;
568 }
570 if (((sql == NULL) || (strcasecmp (sql, "yes") != 0))
571 && (db->slave_sql_running))
572 {
573 n.severity = NOTIF_WARNING;
574 ssnprintf (n.message, sizeof (n.message),
575 "slave SQL thread not started");
576 plugin_dispatch_notification (&n);
577 db->slave_sql_running = 0;
578 }
579 else if (((sql != NULL) && (strcasecmp (sql, "yes") == 0))
580 && (! db->slave_sql_running))
581 {
582 n.severity = NOTIF_OKAY;
583 ssnprintf (n.message, sizeof (n.message),
584 "slave SQL thread started");
585 plugin_dispatch_notification (&n);
586 db->slave_sql_running = 1;
587 }
588 }
590 row = mysql_fetch_row (res);
591 if (row != NULL)
592 WARNING ("mysql plugin: `%s' returned more than one row - "
593 "ignoring further results.", query);
595 mysql_free_result (res);
597 return (0);
598 } /* mysql_read_slave_stats */
600 static int mysql_read_innodb_stats (mysql_database_t *db, MYSQL *con)
601 {
602 MYSQL_RES *res;
603 MYSQL_ROW row;
605 const char *query;
606 struct {
607 const char *key;
608 const char *type;
609 int ds_type;
610 } metrics[] = {
611 { "metadata_mem_pool_size", "bytes", DS_TYPE_GAUGE },
612 { "lock_deadlocks", "mysql_locks", DS_TYPE_DERIVE },
613 { "lock_timeouts", "mysql_locks", DS_TYPE_DERIVE },
614 { "lock_row_lock_current_waits", "mysql_locks", DS_TYPE_DERIVE },
615 { "buffer_pool_size", "bytes", DS_TYPE_GAUGE },
617 { "os_log_bytes_written", "operations", DS_TYPE_DERIVE },
618 { "os_log_pending_fsyncs", "operations", DS_TYPE_DERIVE },
619 { "os_log_pending_writes", "operations", DS_TYPE_DERIVE },
621 { "trx_rseg_history_len", "gauge", DS_TYPE_GAUGE },
623 { "adaptive_hash_searches", "operations", DS_TYPE_DERIVE },
625 { "file_num_open_files", "gauge", DS_TYPE_GAUGE },
627 { "ibuf_merges_insert", "operations", DS_TYPE_DERIVE },
628 { "ibuf_merges_delete_mark", "operations", DS_TYPE_DERIVE },
629 { "ibuf_merges_delete", "operations", DS_TYPE_DERIVE },
630 { "ibuf_merges_discard_insert", "operations", DS_TYPE_DERIVE },
631 { "ibuf_merges_discard_delete_mark", "operations", DS_TYPE_DERIVE },
632 { "ibuf_merges_discard_delete", "operations", DS_TYPE_DERIVE },
633 { "ibuf_merges_discard_merges", "operations", DS_TYPE_DERIVE },
634 { "ibuf_size", "bytes", DS_TYPE_GAUGE },
636 { "innodb_activity_count", "gauge", DS_TYPE_GAUGE },
638 { "innodb_rwlock_s_spin_waits", "operations", DS_TYPE_DERIVE },
639 { "innodb_rwlock_x_spin_waits", "operations", DS_TYPE_DERIVE },
640 { "innodb_rwlock_s_spin_rounds", "operations", DS_TYPE_DERIVE },
641 { "innodb_rwlock_x_spin_rounds", "operations", DS_TYPE_DERIVE },
642 { "innodb_rwlock_s_os_waits", "operations", DS_TYPE_DERIVE },
643 { "innodb_rwlock_x_os_waits", "operations", DS_TYPE_DERIVE },
645 { "dml_reads", "operations", DS_TYPE_DERIVE },
646 { "dml_inserts", "operations", DS_TYPE_DERIVE },
647 { "dml_deletes", "operations", DS_TYPE_DERIVE },
648 { "dml_updates", "operations", DS_TYPE_DERIVE },
650 { NULL, NULL, 0}
651 };
653 query = "SELECT name, count, type FROM information_schema.innodb_metrics WHERE status = 'enabled'";
655 res = exec_query (con, query);
656 if (res == NULL)
657 return (-1);
659 while ((row = mysql_fetch_row (res)))
660 {
661 int i;
662 char *key;
663 unsigned long long val;
665 key = row[0];
666 val = atoll (row[1]);
668 for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
669 ;
671 if (metrics[i].key == NULL)
672 continue;
674 switch (metrics[i].ds_type) {
675 case DS_TYPE_COUNTER:
676 counter_submit(metrics[i].type, key, (counter_t)val, db);
677 break;
678 case DS_TYPE_GAUGE:
679 gauge_submit(metrics[i].type, key, (gauge_t)val, db);
680 break;
681 case DS_TYPE_DERIVE:
682 derive_submit(metrics[i].type, key, (derive_t)val, db);
683 break;
684 }
685 }
687 mysql_free_result(res);
688 return (0);
689 }
691 static int mysql_read_wsrep_stats (mysql_database_t *db, MYSQL *con)
692 {
693 MYSQL_RES *res;
694 MYSQL_ROW row;
696 const char *query;
697 struct {
698 const char *key;
699 const char *type;
700 int ds_type;
701 } metrics[] = {
703 { "wsrep_apply_oooe", "operations", DS_TYPE_DERIVE },
704 { "wsrep_apply_oool", "operations", DS_TYPE_DERIVE },
705 { "wsrep_causal_reads", "operations", DS_TYPE_DERIVE },
706 { "wsrep_commit_oooe", "operations", DS_TYPE_DERIVE },
707 { "wsrep_commit_oool", "operations", DS_TYPE_DERIVE },
708 { "wsrep_flow_control_recv", "operations", DS_TYPE_DERIVE },
709 { "wsrep_flow_control_sent", "operations", DS_TYPE_DERIVE },
710 { "wsrep_flow_control_paused", "operations", DS_TYPE_DERIVE },
711 { "wsrep_local_bf_aborts", "operations", DS_TYPE_DERIVE },
712 { "wsrep_local_cert_failures", "operations", DS_TYPE_DERIVE },
713 { "wsrep_local_commits", "operations", DS_TYPE_DERIVE },
714 { "wsrep_local_replays", "operations", DS_TYPE_DERIVE },
715 { "wsrep_received", "operations", DS_TYPE_DERIVE },
716 { "wsrep_replicated", "operations", DS_TYPE_DERIVE },
718 { "wsrep_received_bytes", "total_bytes", DS_TYPE_DERIVE },
719 { "wsrep_replicated_bytes", "total_bytes", DS_TYPE_DERIVE },
721 { "wsrep_apply_window", "gauge", DS_TYPE_GAUGE },
722 { "wsrep_commit_window", "gauge", DS_TYPE_GAUGE },
724 { "wsrep_cluster_size", "gauge", DS_TYPE_GAUGE },
725 { "wsrep_cert_deps_distance", "gauge", DS_TYPE_GAUGE },
727 { "wsrep_local_recv_queue", "queue_length", DS_TYPE_GAUGE },
728 { "wsrep_local_send_queue", "queue_length", DS_TYPE_GAUGE },
730 { NULL, NULL, 0}
732 };
734 query = "SHOW GLOBAL STATUS LIKE 'wsrep_%'";
736 res = exec_query (con, query);
737 if (res == NULL)
738 return (-1);
740 row = mysql_fetch_row (res);
741 if (row == NULL)
742 {
743 ERROR ("mysql plugin: Failed to get wsrep statistics: "
744 "`%s' did not return any rows.", query);
745 mysql_free_result (res);
746 return (-1);
747 }
749 while ((row = mysql_fetch_row (res)))
750 {
751 int i;
752 char *key;
753 unsigned long long val;
755 key = row[0];
756 val = atoll (row[1]);
758 for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
759 ;
761 if (metrics[i].key == NULL)
762 continue;
764 switch (metrics[i].ds_type) {
765 case DS_TYPE_GAUGE:
766 gauge_submit(metrics[i].type, key, (gauge_t)val, db);
767 break;
768 case DS_TYPE_DERIVE:
769 derive_submit(metrics[i].type, key, (derive_t)val, db);
770 break;
771 }
772 }
774 mysql_free_result(res);
775 return (0);
776 } /* mysql_read_wsrep_stats */
778 static int mysql_read (user_data_t *ud)
779 {
780 mysql_database_t *db;
781 MYSQL *con;
782 MYSQL_RES *res;
783 MYSQL_ROW row;
784 const char *query;
786 derive_t qcache_hits = 0;
787 derive_t qcache_inserts = 0;
788 derive_t qcache_not_cached = 0;
789 derive_t qcache_lowmem_prunes = 0;
790 gauge_t qcache_queries_in_cache = NAN;
792 gauge_t threads_running = NAN;
793 gauge_t threads_connected = NAN;
794 gauge_t threads_cached = NAN;
795 derive_t threads_created = 0;
797 unsigned long long traffic_incoming = 0ULL;
798 unsigned long long traffic_outgoing = 0ULL;
799 unsigned long mysql_version = 0ULL;
801 if ((ud == NULL) || (ud->data == NULL))
802 {
803 ERROR ("mysql plugin: mysql_database_read: Invalid user data.");
804 return (-1);
805 }
807 db = (mysql_database_t *) ud->data;
809 /* An error message will have been printed in this case */
810 if ((con = getconnection (db)) == NULL)
811 return (-1);
813 mysql_version = mysql_get_server_version(con);
815 query = "SHOW STATUS";
816 if (mysql_version >= 50002)
817 query = "SHOW GLOBAL STATUS";
819 res = exec_query (con, query);
820 if (res == NULL)
821 return (-1);
823 while ((row = mysql_fetch_row (res)))
824 {
825 char *key;
826 unsigned long long val;
828 key = row[0];
829 val = atoll (row[1]);
831 if (strncmp (key, "Com_",
832 strlen ("Com_")) == 0)
833 {
834 if (val == 0ULL)
835 continue;
837 /* Ignore `prepared statements' */
838 if (strncmp (key, "Com_stmt_", strlen ("Com_stmt_")) != 0)
839 counter_submit ("mysql_commands",
840 key + strlen ("Com_"),
841 val, db);
842 }
843 else if (strncmp (key, "Handler_",
844 strlen ("Handler_")) == 0)
845 {
846 if (val == 0ULL)
847 continue;
849 counter_submit ("mysql_handler",
850 key + strlen ("Handler_"),
851 val, db);
852 }
853 else if (strncmp (key, "Qcache_",
854 strlen ("Qcache_")) == 0)
855 {
856 if (strcmp (key, "Qcache_hits") == 0)
857 qcache_hits = (derive_t) val;
858 else if (strcmp (key, "Qcache_inserts") == 0)
859 qcache_inserts = (derive_t) val;
860 else if (strcmp (key, "Qcache_not_cached") == 0)
861 qcache_not_cached = (derive_t) val;
862 else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
863 qcache_lowmem_prunes = (derive_t) val;
864 else if (strcmp (key, "Qcache_queries_in_cache") == 0)
865 qcache_queries_in_cache = (gauge_t) val;
866 }
867 else if (strncmp (key, "Bytes_",
868 strlen ("Bytes_")) == 0)
869 {
870 if (strcmp (key, "Bytes_received") == 0)
871 traffic_incoming += val;
872 else if (strcmp (key, "Bytes_sent") == 0)
873 traffic_outgoing += val;
874 }
875 else if (strncmp (key, "Threads_",
876 strlen ("Threads_")) == 0)
877 {
878 if (strcmp (key, "Threads_running") == 0)
879 threads_running = (gauge_t) val;
880 else if (strcmp (key, "Threads_connected") == 0)
881 threads_connected = (gauge_t) val;
882 else if (strcmp (key, "Threads_cached") == 0)
883 threads_cached = (gauge_t) val;
884 else if (strcmp (key, "Threads_created") == 0)
885 threads_created = (derive_t) val;
886 }
887 else if (strncmp (key, "Table_locks_",
888 strlen ("Table_locks_")) == 0)
889 {
890 counter_submit ("mysql_locks",
891 key + strlen ("Table_locks_"),
892 val, db);
893 }
894 else if (db->innodb_stats && strncmp (key, "Innodb_", strlen ("Innodb_")) == 0)
895 {
896 /* buffer pool */
897 if (strcmp (key, "Innodb_buffer_pool_pages_data") == 0)
898 gauge_submit ("mysql_bpool_pages", "data", val, db);
899 else if (strcmp (key, "Innodb_buffer_pool_pages_dirty") == 0)
900 gauge_submit ("mysql_bpool_pages", "dirty", val, db);
901 else if (strcmp (key, "Innodb_buffer_pool_pages_flushed") == 0)
902 counter_submit ("mysql_bpool_counters", "pages_flushed", val, db);
903 else if (strcmp (key, "Innodb_buffer_pool_pages_free") == 0)
904 gauge_submit ("mysql_bpool_pages", "free", val, db);
905 else if (strcmp (key, "Innodb_buffer_pool_pages_misc") == 0)
906 gauge_submit ("mysql_bpool_pages", "misc", val, db);
907 else if (strcmp (key, "Innodb_buffer_pool_pages_total") == 0)
908 gauge_submit ("mysql_bpool_pages", "total", val, db);
909 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_rnd") == 0)
910 counter_submit ("mysql_bpool_counters", "read_ahead_rnd", val, db);
911 else if (strcmp (key, "Innodb_buffer_pool_read_ahead") == 0)
912 counter_submit ("mysql_bpool_counters", "read_ahead", val, db);
913 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_evicted") == 0)
914 counter_submit ("mysql_bpool_counters", "read_ahead_evicted", val, db);
915 else if (strcmp (key, "Innodb_buffer_pool_read_requests") == 0)
916 counter_submit ("mysql_bpool_counters", "read_requests", val, db);
917 else if (strcmp (key, "Innodb_buffer_pool_reads") == 0)
918 counter_submit ("mysql_bpool_counters", "reads", val, db);
919 else if (strcmp (key, "Innodb_buffer_pool_wait_free") == 0)
920 counter_submit ("mysql_bpool_counters", "wait_free", val, db);
921 else if (strcmp (key, "Innodb_buffer_pool_write_requests") == 0)
922 counter_submit ("mysql_bpool_counters", "write_requests", val, db);
923 else if (strcmp (key, "Innodb_buffer_pool_bytes_data") == 0)
924 gauge_submit ("mysql_bpool_bytes", "data", val, db);
925 else if (strcmp (key, "Innodb_buffer_pool_bytes_dirty") == 0)
926 gauge_submit ("mysql_bpool_bytes", "dirty", val, db);
928 /* data */
929 if (strcmp (key, "Innodb_data_fsyncs") == 0)
930 counter_submit ("mysql_innodb_data", "fsyncs", val, db);
931 else if (strcmp (key, "Innodb_data_read") == 0)
932 counter_submit ("mysql_innodb_data", "read", val, db);
933 else if (strcmp (key, "Innodb_data_reads") == 0)
934 counter_submit ("mysql_innodb_data", "reads", val, db);
935 else if (strcmp (key, "Innodb_data_writes") == 0)
936 counter_submit ("mysql_innodb_data", "writes", val, db);
937 else if (strcmp (key, "Innodb_data_written") == 0)
938 counter_submit ("mysql_innodb_data", "written", val, db);
940 /* double write */
941 else if (strcmp (key, "Innodb_dblwr_writes") == 0)
942 counter_submit ("mysql_innodb_dblwr", "writes", val, db);
943 else if (strcmp (key, "Innodb_dblwr_pages_written") == 0)
944 counter_submit ("mysql_innodb_dblwr", "written", val, db);
945 else if (strcmp (key, "Innodb_dblwr_page_size") == 0)
946 gauge_submit ("mysql_innodb_dblwr", "page_size", val, db);
948 /* log */
949 else if (strcmp (key, "Innodb_log_waits") == 0)
950 counter_submit ("mysql_innodb_log", "waits", val, db);
951 else if (strcmp (key, "Innodb_log_write_requests") == 0)
952 counter_submit ("mysql_innodb_log", "write_requests", val, db);
953 else if (strcmp (key, "Innodb_log_writes") == 0)
954 counter_submit ("mysql_innodb_log", "writes", val, db);
955 else if (strcmp (key, "Innodb_os_log_fsyncs") == 0)
956 counter_submit ("mysql_innodb_log", "fsyncs", val, db);
957 else if (strcmp (key, "Innodb_os_log_written") == 0)
958 counter_submit ("mysql_innodb_log", "written", val, db);
960 /* pages */
961 else if (strcmp (key, "Innodb_pages_created") == 0)
962 counter_submit ("mysql_innodb_pages", "created", val, db);
963 else if (strcmp (key, "Innodb_pages_read") == 0)
964 counter_submit ("mysql_innodb_pages", "read", val, db);
965 else if (strcmp (key, "Innodb_pages_written") == 0)
966 counter_submit ("mysql_innodb_pages", "written", val, db);
968 /* row lock */
969 else if (strcmp (key, "Innodb_row_lock_time") == 0)
970 counter_submit ("mysql_innodb_row_lock", "time", val, db);
971 else if (strcmp (key, "Innodb_row_lock_waits") == 0)
972 counter_submit ("mysql_innodb_row_lock", "waits", val, db);
974 /* rows */
975 else if (strcmp (key, "Innodb_rows_deleted") == 0)
976 counter_submit ("mysql_innodb_rows", "deleted", val, db);
977 else if (strcmp (key, "Innodb_rows_inserted") == 0)
978 counter_submit ("mysql_innodb_rows", "inserted", val, db);
979 else if (strcmp (key, "Innodb_rows_read") == 0)
980 counter_submit ("mysql_innodb_rows", "read", val, db);
981 else if (strcmp (key, "Innodb_rows_updated") == 0)
982 counter_submit ("mysql_innodb_rows", "updated", val, db);
983 }
984 else if (strncmp (key, "Select_", strlen ("Select_")) == 0)
985 {
986 counter_submit ("mysql_select", key + strlen ("Select_"),
987 val, db);
988 }
989 else if (strncmp (key, "Sort_", strlen ("Sort_")) == 0)
990 {
991 if (strcmp (key, "Sort_merge_passes") == 0)
992 counter_submit ("mysql_sort_merge_passes", NULL, val, db);
993 else if (strcmp (key, "Sort_rows") == 0)
994 counter_submit ("mysql_sort_rows", NULL, val, db);
995 else if (strcmp (key, "Sort_range") == 0)
996 counter_submit ("mysql_sort", "range", val, db);
997 else if (strcmp (key, "Sort_scan") == 0)
998 counter_submit ("mysql_sort", "scan", val, db);
1000 }
1001 else if (strncmp (key, "Slow_queries", strlen ("Slow_queries")) == 0)
1002 {
1003 counter_submit ("mysql_slow_queries", NULL , val, db);
1004 }
1005 }
1006 mysql_free_result (res); res = NULL;
1008 if ((qcache_hits != 0)
1009 || (qcache_inserts != 0)
1010 || (qcache_not_cached != 0)
1011 || (qcache_lowmem_prunes != 0))
1012 {
1013 derive_submit ("cache_result", "qcache-hits",
1014 qcache_hits, db);
1015 derive_submit ("cache_result", "qcache-inserts",
1016 qcache_inserts, db);
1017 derive_submit ("cache_result", "qcache-not_cached",
1018 qcache_not_cached, db);
1019 derive_submit ("cache_result", "qcache-prunes",
1020 qcache_lowmem_prunes, db);
1022 gauge_submit ("cache_size", "qcache",
1023 qcache_queries_in_cache, db);
1024 }
1026 if (threads_created != 0)
1027 {
1028 gauge_submit ("threads", "running",
1029 threads_running, db);
1030 gauge_submit ("threads", "connected",
1031 threads_connected, db);
1032 gauge_submit ("threads", "cached",
1033 threads_cached, db);
1035 derive_submit ("total_threads", "created",
1036 threads_created, db);
1037 }
1039 traffic_submit (traffic_incoming, traffic_outgoing, db);
1041 if (mysql_version >= 50600 && db->innodb_stats)
1042 mysql_read_innodb_stats (db, con);
1044 if (db->master_stats)
1045 mysql_read_master_stats (db, con);
1047 if ((db->slave_stats) || (db->slave_notif))
1048 mysql_read_slave_stats (db, con);
1050 if (db->wsrep_stats)
1051 mysql_read_wsrep_stats (db, con);
1053 return (0);
1054 } /* int mysql_read */
1056 void module_register (void)
1057 {
1058 plugin_register_complex_config ("mysql", mysql_config);
1059 } /* void module_register */