d9826d9fb09f9bea7862b81a78e8e86a560cd94f
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 gauge_submit (const char *type, const char *type_instance,
369 gauge_t value, mysql_database_t *db)
370 {
371 submit (type, type_instance, &(value_t) { .gauge = value }, 1, db);
372 } /* void gauge_submit */
374 static void derive_submit (const char *type, const char *type_instance,
375 derive_t value, mysql_database_t *db)
376 {
377 submit (type, type_instance, &(value_t) { .derive = value }, 1, db);
378 } /* void derive_submit */
380 static void traffic_submit (derive_t rx, derive_t tx, mysql_database_t *db)
381 {
382 value_t values[2];
384 values[0].derive = rx;
385 values[1].derive = tx;
387 submit ("mysql_octets", NULL, values, STATIC_ARRAY_SIZE (values), db);
388 } /* void traffic_submit */
390 static MYSQL_RES *exec_query (MYSQL *con, const char *query)
391 {
392 MYSQL_RES *res;
394 int query_len = strlen (query);
396 if (mysql_real_query (con, query, query_len))
397 {
398 ERROR ("mysql plugin: Failed to execute query: %s",
399 mysql_error (con));
400 INFO ("mysql plugin: SQL query was: %s", query);
401 return (NULL);
402 }
404 res = mysql_store_result (con);
405 if (res == NULL)
406 {
407 ERROR ("mysql plugin: Failed to store query result: %s",
408 mysql_error (con));
409 INFO ("mysql plugin: SQL query was: %s", query);
410 return (NULL);
411 }
413 return (res);
414 } /* exec_query */
416 static int mysql_read_master_stats (mysql_database_t *db, MYSQL *con)
417 {
418 MYSQL_RES *res;
419 MYSQL_ROW row;
421 const char *query;
422 int field_num;
423 unsigned long long position;
425 query = "SHOW MASTER STATUS";
427 res = exec_query (con, query);
428 if (res == NULL)
429 return (-1);
431 row = mysql_fetch_row (res);
432 if (row == NULL)
433 {
434 ERROR ("mysql plugin: Failed to get master statistics: "
435 "`%s' did not return any rows.", query);
436 mysql_free_result (res);
437 return (-1);
438 }
440 field_num = mysql_num_fields (res);
441 if (field_num < 2)
442 {
443 ERROR ("mysql plugin: Failed to get master statistics: "
444 "`%s' returned less than two columns.", query);
445 mysql_free_result (res);
446 return (-1);
447 }
449 position = atoll (row[1]);
450 derive_submit ("mysql_log_position", "master-bin", position, db);
452 row = mysql_fetch_row (res);
453 if (row != NULL)
454 WARNING ("mysql plugin: `%s' returned more than one row - "
455 "ignoring further results.", query);
457 mysql_free_result (res);
459 return (0);
460 } /* mysql_read_master_stats */
462 static int mysql_read_slave_stats (mysql_database_t *db, MYSQL *con)
463 {
464 MYSQL_RES *res;
465 MYSQL_ROW row;
467 const char *query;
468 int field_num;
470 /* WTF? libmysqlclient does not seem to provide any means to
471 * translate a column name to a column index ... :-/ */
472 const int READ_MASTER_LOG_POS_IDX = 6;
473 const int SLAVE_IO_RUNNING_IDX = 10;
474 const int SLAVE_SQL_RUNNING_IDX = 11;
475 const int EXEC_MASTER_LOG_POS_IDX = 21;
476 const int SECONDS_BEHIND_MASTER_IDX = 32;
478 query = "SHOW SLAVE STATUS";
480 res = exec_query (con, query);
481 if (res == NULL)
482 return (-1);
484 row = mysql_fetch_row (res);
485 if (row == NULL)
486 {
487 ERROR ("mysql plugin: Failed to get slave statistics: "
488 "`%s' did not return any rows.", query);
489 mysql_free_result (res);
490 return (-1);
491 }
493 field_num = mysql_num_fields (res);
494 if (field_num < 33)
495 {
496 ERROR ("mysql plugin: Failed to get slave statistics: "
497 "`%s' returned less than 33 columns.", query);
498 mysql_free_result (res);
499 return (-1);
500 }
502 if (db->slave_stats)
503 {
504 unsigned long long counter;
505 double gauge;
507 counter = atoll (row[READ_MASTER_LOG_POS_IDX]);
508 derive_submit ("mysql_log_position", "slave-read", counter, db);
510 counter = atoll (row[EXEC_MASTER_LOG_POS_IDX]);
511 derive_submit ("mysql_log_position", "slave-exec", counter, db);
513 if (row[SECONDS_BEHIND_MASTER_IDX] != NULL)
514 {
515 gauge = atof (row[SECONDS_BEHIND_MASTER_IDX]);
516 gauge_submit ("time_offset", NULL, gauge, db);
517 }
518 }
520 if (db->slave_notif)
521 {
522 notification_t n = { 0, cdtime (), "", "",
523 "mysql", "", "time_offset", "", NULL };
525 char *io, *sql;
527 io = row[SLAVE_IO_RUNNING_IDX];
528 sql = row[SLAVE_SQL_RUNNING_IDX];
530 set_host (db, n.host, sizeof (n.host));
532 /* Assured by "mysql_config_database" */
533 assert (db->instance != NULL);
534 sstrncpy (n.plugin_instance, db->instance, sizeof (n.plugin_instance));
536 if (((io == NULL) || (strcasecmp (io, "yes") != 0))
537 && (db->slave_io_running))
538 {
539 n.severity = NOTIF_WARNING;
540 ssnprintf (n.message, sizeof (n.message),
541 "slave I/O thread not started or not connected to master");
542 plugin_dispatch_notification (&n);
543 db->slave_io_running = 0;
544 }
545 else if (((io != NULL) && (strcasecmp (io, "yes") == 0))
546 && (! db->slave_io_running))
547 {
548 n.severity = NOTIF_OKAY;
549 ssnprintf (n.message, sizeof (n.message),
550 "slave I/O thread started and connected to master");
551 plugin_dispatch_notification (&n);
552 db->slave_io_running = 1;
553 }
555 if (((sql == NULL) || (strcasecmp (sql, "yes") != 0))
556 && (db->slave_sql_running))
557 {
558 n.severity = NOTIF_WARNING;
559 ssnprintf (n.message, sizeof (n.message),
560 "slave SQL thread not started");
561 plugin_dispatch_notification (&n);
562 db->slave_sql_running = 0;
563 }
564 else if (((sql != NULL) && (strcasecmp (sql, "yes") == 0))
565 && (! db->slave_sql_running))
566 {
567 n.severity = NOTIF_OKAY;
568 ssnprintf (n.message, sizeof (n.message),
569 "slave SQL thread started");
570 plugin_dispatch_notification (&n);
571 db->slave_sql_running = 1;
572 }
573 }
575 row = mysql_fetch_row (res);
576 if (row != NULL)
577 WARNING ("mysql plugin: `%s' returned more than one row - "
578 "ignoring further results.", query);
580 mysql_free_result (res);
582 return (0);
583 } /* mysql_read_slave_stats */
585 static int mysql_read_innodb_stats (mysql_database_t *db, MYSQL *con)
586 {
587 MYSQL_RES *res;
588 MYSQL_ROW row;
590 const char *query;
591 struct {
592 const char *key;
593 const char *type;
594 int ds_type;
595 } metrics[] = {
596 { "metadata_mem_pool_size", "bytes", DS_TYPE_GAUGE },
597 { "lock_deadlocks", "mysql_locks", DS_TYPE_DERIVE },
598 { "lock_timeouts", "mysql_locks", DS_TYPE_DERIVE },
599 { "lock_row_lock_current_waits", "mysql_locks", DS_TYPE_DERIVE },
600 { "buffer_pool_size", "bytes", DS_TYPE_GAUGE },
602 { "os_log_bytes_written", "operations", DS_TYPE_DERIVE },
603 { "os_log_pending_fsyncs", "operations", DS_TYPE_DERIVE },
604 { "os_log_pending_writes", "operations", DS_TYPE_DERIVE },
606 { "trx_rseg_history_len", "gauge", DS_TYPE_GAUGE },
608 { "adaptive_hash_searches", "operations", DS_TYPE_DERIVE },
610 { "file_num_open_files", "gauge", DS_TYPE_GAUGE },
612 { "ibuf_merges_insert", "operations", DS_TYPE_DERIVE },
613 { "ibuf_merges_delete_mark", "operations", DS_TYPE_DERIVE },
614 { "ibuf_merges_delete", "operations", DS_TYPE_DERIVE },
615 { "ibuf_merges_discard_insert", "operations", DS_TYPE_DERIVE },
616 { "ibuf_merges_discard_delete_mark", "operations", DS_TYPE_DERIVE },
617 { "ibuf_merges_discard_delete", "operations", DS_TYPE_DERIVE },
618 { "ibuf_merges_discard_merges", "operations", DS_TYPE_DERIVE },
619 { "ibuf_size", "bytes", DS_TYPE_GAUGE },
621 { "innodb_activity_count", "gauge", DS_TYPE_GAUGE },
623 { "innodb_rwlock_s_spin_waits", "operations", DS_TYPE_DERIVE },
624 { "innodb_rwlock_x_spin_waits", "operations", DS_TYPE_DERIVE },
625 { "innodb_rwlock_s_spin_rounds", "operations", DS_TYPE_DERIVE },
626 { "innodb_rwlock_x_spin_rounds", "operations", DS_TYPE_DERIVE },
627 { "innodb_rwlock_s_os_waits", "operations", DS_TYPE_DERIVE },
628 { "innodb_rwlock_x_os_waits", "operations", DS_TYPE_DERIVE },
630 { "dml_reads", "operations", DS_TYPE_DERIVE },
631 { "dml_inserts", "operations", DS_TYPE_DERIVE },
632 { "dml_deletes", "operations", DS_TYPE_DERIVE },
633 { "dml_updates", "operations", DS_TYPE_DERIVE },
635 { NULL, NULL, 0}
636 };
638 query = "SELECT name, count, type FROM information_schema.innodb_metrics WHERE status = 'enabled'";
640 res = exec_query (con, query);
641 if (res == NULL)
642 return (-1);
644 while ((row = mysql_fetch_row (res)))
645 {
646 int i;
647 char *key;
648 unsigned long long val;
650 key = row[0];
651 val = atoll (row[1]);
653 for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
654 ;
656 if (metrics[i].key == NULL)
657 continue;
659 switch (metrics[i].ds_type) {
660 case DS_TYPE_COUNTER:
661 derive_submit(metrics[i].type, key, (counter_t)val, db);
662 break;
663 case DS_TYPE_GAUGE:
664 gauge_submit(metrics[i].type, key, (gauge_t)val, db);
665 break;
666 case DS_TYPE_DERIVE:
667 derive_submit(metrics[i].type, key, (derive_t)val, db);
668 break;
669 }
670 }
672 mysql_free_result(res);
673 return (0);
674 }
676 static int mysql_read_wsrep_stats (mysql_database_t *db, MYSQL *con)
677 {
678 MYSQL_RES *res;
679 MYSQL_ROW row;
681 const char *query;
682 struct {
683 const char *key;
684 const char *type;
685 int ds_type;
686 } metrics[] = {
688 { "wsrep_apply_oooe", "operations", DS_TYPE_DERIVE },
689 { "wsrep_apply_oool", "operations", DS_TYPE_DERIVE },
690 { "wsrep_causal_reads", "operations", DS_TYPE_DERIVE },
691 { "wsrep_commit_oooe", "operations", DS_TYPE_DERIVE },
692 { "wsrep_commit_oool", "operations", DS_TYPE_DERIVE },
693 { "wsrep_flow_control_recv", "operations", DS_TYPE_DERIVE },
694 { "wsrep_flow_control_sent", "operations", DS_TYPE_DERIVE },
695 { "wsrep_flow_control_paused", "operations", DS_TYPE_DERIVE },
696 { "wsrep_local_bf_aborts", "operations", DS_TYPE_DERIVE },
697 { "wsrep_local_cert_failures", "operations", DS_TYPE_DERIVE },
698 { "wsrep_local_commits", "operations", DS_TYPE_DERIVE },
699 { "wsrep_local_replays", "operations", DS_TYPE_DERIVE },
700 { "wsrep_received", "operations", DS_TYPE_DERIVE },
701 { "wsrep_replicated", "operations", DS_TYPE_DERIVE },
703 { "wsrep_received_bytes", "total_bytes", DS_TYPE_DERIVE },
704 { "wsrep_replicated_bytes", "total_bytes", DS_TYPE_DERIVE },
706 { "wsrep_apply_window", "gauge", DS_TYPE_GAUGE },
707 { "wsrep_commit_window", "gauge", DS_TYPE_GAUGE },
709 { "wsrep_cluster_size", "gauge", DS_TYPE_GAUGE },
710 { "wsrep_cert_deps_distance", "gauge", DS_TYPE_GAUGE },
712 { "wsrep_local_recv_queue", "queue_length", DS_TYPE_GAUGE },
713 { "wsrep_local_send_queue", "queue_length", DS_TYPE_GAUGE },
715 { NULL, NULL, 0}
717 };
719 query = "SHOW GLOBAL STATUS LIKE 'wsrep_%'";
721 res = exec_query (con, query);
722 if (res == NULL)
723 return (-1);
725 row = mysql_fetch_row (res);
726 if (row == NULL)
727 {
728 ERROR ("mysql plugin: Failed to get wsrep statistics: "
729 "`%s' did not return any rows.", query);
730 mysql_free_result (res);
731 return (-1);
732 }
734 while ((row = mysql_fetch_row (res)))
735 {
736 int i;
737 char *key;
738 unsigned long long val;
740 key = row[0];
741 val = atoll (row[1]);
743 for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
744 ;
746 if (metrics[i].key == NULL)
747 continue;
749 switch (metrics[i].ds_type) {
750 case DS_TYPE_GAUGE:
751 gauge_submit(metrics[i].type, key, (gauge_t)val, db);
752 break;
753 case DS_TYPE_DERIVE:
754 derive_submit(metrics[i].type, key, (derive_t)val, db);
755 break;
756 }
757 }
759 mysql_free_result(res);
760 return (0);
761 } /* mysql_read_wsrep_stats */
763 static int mysql_read (user_data_t *ud)
764 {
765 mysql_database_t *db;
766 MYSQL *con;
767 MYSQL_RES *res;
768 MYSQL_ROW row;
769 const char *query;
771 derive_t qcache_hits = 0;
772 derive_t qcache_inserts = 0;
773 derive_t qcache_not_cached = 0;
774 derive_t qcache_lowmem_prunes = 0;
775 gauge_t qcache_queries_in_cache = NAN;
777 gauge_t threads_running = NAN;
778 gauge_t threads_connected = NAN;
779 gauge_t threads_cached = NAN;
780 derive_t threads_created = 0;
782 unsigned long long traffic_incoming = 0ULL;
783 unsigned long long traffic_outgoing = 0ULL;
784 unsigned long mysql_version = 0ULL;
786 if ((ud == NULL) || (ud->data == NULL))
787 {
788 ERROR ("mysql plugin: mysql_database_read: Invalid user data.");
789 return (-1);
790 }
792 db = (mysql_database_t *) ud->data;
794 /* An error message will have been printed in this case */
795 if ((con = getconnection (db)) == NULL)
796 return (-1);
798 mysql_version = mysql_get_server_version(con);
800 query = "SHOW STATUS";
801 if (mysql_version >= 50002)
802 query = "SHOW GLOBAL STATUS";
804 res = exec_query (con, query);
805 if (res == NULL)
806 return (-1);
808 while ((row = mysql_fetch_row (res)))
809 {
810 char *key;
811 unsigned long long val;
813 key = row[0];
814 val = atoll (row[1]);
816 if (strncmp (key, "Com_",
817 strlen ("Com_")) == 0)
818 {
819 if (val == 0ULL)
820 continue;
822 /* Ignore `prepared statements' */
823 if (strncmp (key, "Com_stmt_", strlen ("Com_stmt_")) != 0)
824 derive_submit ("mysql_commands",
825 key + strlen ("Com_"),
826 val, db);
827 }
828 else if (strncmp (key, "Handler_",
829 strlen ("Handler_")) == 0)
830 {
831 if (val == 0ULL)
832 continue;
834 derive_submit ("mysql_handler",
835 key + strlen ("Handler_"),
836 val, db);
837 }
838 else if (strncmp (key, "Qcache_",
839 strlen ("Qcache_")) == 0)
840 {
841 if (strcmp (key, "Qcache_hits") == 0)
842 qcache_hits = (derive_t) val;
843 else if (strcmp (key, "Qcache_inserts") == 0)
844 qcache_inserts = (derive_t) val;
845 else if (strcmp (key, "Qcache_not_cached") == 0)
846 qcache_not_cached = (derive_t) val;
847 else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
848 qcache_lowmem_prunes = (derive_t) val;
849 else if (strcmp (key, "Qcache_queries_in_cache") == 0)
850 qcache_queries_in_cache = (gauge_t) val;
851 }
852 else if (strncmp (key, "Bytes_",
853 strlen ("Bytes_")) == 0)
854 {
855 if (strcmp (key, "Bytes_received") == 0)
856 traffic_incoming += val;
857 else if (strcmp (key, "Bytes_sent") == 0)
858 traffic_outgoing += val;
859 }
860 else if (strncmp (key, "Threads_",
861 strlen ("Threads_")) == 0)
862 {
863 if (strcmp (key, "Threads_running") == 0)
864 threads_running = (gauge_t) val;
865 else if (strcmp (key, "Threads_connected") == 0)
866 threads_connected = (gauge_t) val;
867 else if (strcmp (key, "Threads_cached") == 0)
868 threads_cached = (gauge_t) val;
869 else if (strcmp (key, "Threads_created") == 0)
870 threads_created = (derive_t) val;
871 }
872 else if (strncmp (key, "Table_locks_",
873 strlen ("Table_locks_")) == 0)
874 {
875 derive_submit ("mysql_locks",
876 key + strlen ("Table_locks_"),
877 val, db);
878 }
879 else if (db->innodb_stats && strncmp (key, "Innodb_", strlen ("Innodb_")) == 0)
880 {
881 /* buffer pool */
882 if (strcmp (key, "Innodb_buffer_pool_pages_data") == 0)
883 gauge_submit ("mysql_bpool_pages", "data", val, db);
884 else if (strcmp (key, "Innodb_buffer_pool_pages_dirty") == 0)
885 gauge_submit ("mysql_bpool_pages", "dirty", val, db);
886 else if (strcmp (key, "Innodb_buffer_pool_pages_flushed") == 0)
887 derive_submit ("mysql_bpool_counters", "pages_flushed", val, db);
888 else if (strcmp (key, "Innodb_buffer_pool_pages_free") == 0)
889 gauge_submit ("mysql_bpool_pages", "free", val, db);
890 else if (strcmp (key, "Innodb_buffer_pool_pages_misc") == 0)
891 gauge_submit ("mysql_bpool_pages", "misc", val, db);
892 else if (strcmp (key, "Innodb_buffer_pool_pages_total") == 0)
893 gauge_submit ("mysql_bpool_pages", "total", val, db);
894 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_rnd") == 0)
895 derive_submit ("mysql_bpool_counters", "read_ahead_rnd", val, db);
896 else if (strcmp (key, "Innodb_buffer_pool_read_ahead") == 0)
897 derive_submit ("mysql_bpool_counters", "read_ahead", val, db);
898 else if (strcmp (key, "Innodb_buffer_pool_read_ahead_evicted") == 0)
899 derive_submit ("mysql_bpool_counters", "read_ahead_evicted", val, db);
900 else if (strcmp (key, "Innodb_buffer_pool_read_requests") == 0)
901 derive_submit ("mysql_bpool_counters", "read_requests", val, db);
902 else if (strcmp (key, "Innodb_buffer_pool_reads") == 0)
903 derive_submit ("mysql_bpool_counters", "reads", val, db);
904 else if (strcmp (key, "Innodb_buffer_pool_wait_free") == 0)
905 derive_submit ("mysql_bpool_counters", "wait_free", val, db);
906 else if (strcmp (key, "Innodb_buffer_pool_write_requests") == 0)
907 derive_submit ("mysql_bpool_counters", "write_requests", val, db);
908 else if (strcmp (key, "Innodb_buffer_pool_bytes_data") == 0)
909 gauge_submit ("mysql_bpool_bytes", "data", val, db);
910 else if (strcmp (key, "Innodb_buffer_pool_bytes_dirty") == 0)
911 gauge_submit ("mysql_bpool_bytes", "dirty", val, db);
913 /* data */
914 if (strcmp (key, "Innodb_data_fsyncs") == 0)
915 derive_submit ("mysql_innodb_data", "fsyncs", val, db);
916 else if (strcmp (key, "Innodb_data_read") == 0)
917 derive_submit ("mysql_innodb_data", "read", val, db);
918 else if (strcmp (key, "Innodb_data_reads") == 0)
919 derive_submit ("mysql_innodb_data", "reads", val, db);
920 else if (strcmp (key, "Innodb_data_writes") == 0)
921 derive_submit ("mysql_innodb_data", "writes", val, db);
922 else if (strcmp (key, "Innodb_data_written") == 0)
923 derive_submit ("mysql_innodb_data", "written", val, db);
925 /* double write */
926 else if (strcmp (key, "Innodb_dblwr_writes") == 0)
927 derive_submit ("mysql_innodb_dblwr", "writes", val, db);
928 else if (strcmp (key, "Innodb_dblwr_pages_written") == 0)
929 derive_submit ("mysql_innodb_dblwr", "written", val, db);
930 else if (strcmp (key, "Innodb_dblwr_page_size") == 0)
931 gauge_submit ("mysql_innodb_dblwr", "page_size", val, db);
933 /* log */
934 else if (strcmp (key, "Innodb_log_waits") == 0)
935 derive_submit ("mysql_innodb_log", "waits", val, db);
936 else if (strcmp (key, "Innodb_log_write_requests") == 0)
937 derive_submit ("mysql_innodb_log", "write_requests", val, db);
938 else if (strcmp (key, "Innodb_log_writes") == 0)
939 derive_submit ("mysql_innodb_log", "writes", val, db);
940 else if (strcmp (key, "Innodb_os_log_fsyncs") == 0)
941 derive_submit ("mysql_innodb_log", "fsyncs", val, db);
942 else if (strcmp (key, "Innodb_os_log_written") == 0)
943 derive_submit ("mysql_innodb_log", "written", val, db);
945 /* pages */
946 else if (strcmp (key, "Innodb_pages_created") == 0)
947 derive_submit ("mysql_innodb_pages", "created", val, db);
948 else if (strcmp (key, "Innodb_pages_read") == 0)
949 derive_submit ("mysql_innodb_pages", "read", val, db);
950 else if (strcmp (key, "Innodb_pages_written") == 0)
951 derive_submit ("mysql_innodb_pages", "written", val, db);
953 /* row lock */
954 else if (strcmp (key, "Innodb_row_lock_time") == 0)
955 derive_submit ("mysql_innodb_row_lock", "time", val, db);
956 else if (strcmp (key, "Innodb_row_lock_waits") == 0)
957 derive_submit ("mysql_innodb_row_lock", "waits", val, db);
959 /* rows */
960 else if (strcmp (key, "Innodb_rows_deleted") == 0)
961 derive_submit ("mysql_innodb_rows", "deleted", val, db);
962 else if (strcmp (key, "Innodb_rows_inserted") == 0)
963 derive_submit ("mysql_innodb_rows", "inserted", val, db);
964 else if (strcmp (key, "Innodb_rows_read") == 0)
965 derive_submit ("mysql_innodb_rows", "read", val, db);
966 else if (strcmp (key, "Innodb_rows_updated") == 0)
967 derive_submit ("mysql_innodb_rows", "updated", val, db);
968 }
969 else if (strncmp (key, "Select_", strlen ("Select_")) == 0)
970 {
971 derive_submit ("mysql_select", key + strlen ("Select_"),
972 val, db);
973 }
974 else if (strncmp (key, "Sort_", strlen ("Sort_")) == 0)
975 {
976 if (strcmp (key, "Sort_merge_passes") == 0)
977 derive_submit ("mysql_sort_merge_passes", NULL, val, db);
978 else if (strcmp (key, "Sort_rows") == 0)
979 derive_submit ("mysql_sort_rows", NULL, val, db);
980 else if (strcmp (key, "Sort_range") == 0)
981 derive_submit ("mysql_sort", "range", val, db);
982 else if (strcmp (key, "Sort_scan") == 0)
983 derive_submit ("mysql_sort", "scan", val, db);
985 }
986 else if (strncmp (key, "Slow_queries", strlen ("Slow_queries")) == 0)
987 {
988 derive_submit ("mysql_slow_queries", NULL , val, db);
989 }
990 }
991 mysql_free_result (res); res = NULL;
993 if ((qcache_hits != 0)
994 || (qcache_inserts != 0)
995 || (qcache_not_cached != 0)
996 || (qcache_lowmem_prunes != 0))
997 {
998 derive_submit ("cache_result", "qcache-hits",
999 qcache_hits, db);
1000 derive_submit ("cache_result", "qcache-inserts",
1001 qcache_inserts, db);
1002 derive_submit ("cache_result", "qcache-not_cached",
1003 qcache_not_cached, db);
1004 derive_submit ("cache_result", "qcache-prunes",
1005 qcache_lowmem_prunes, db);
1007 gauge_submit ("cache_size", "qcache",
1008 qcache_queries_in_cache, db);
1009 }
1011 if (threads_created != 0)
1012 {
1013 gauge_submit ("threads", "running",
1014 threads_running, db);
1015 gauge_submit ("threads", "connected",
1016 threads_connected, db);
1017 gauge_submit ("threads", "cached",
1018 threads_cached, db);
1020 derive_submit ("total_threads", "created",
1021 threads_created, db);
1022 }
1024 traffic_submit (traffic_incoming, traffic_outgoing, db);
1026 if (mysql_version >= 50600 && db->innodb_stats)
1027 mysql_read_innodb_stats (db, con);
1029 if (db->master_stats)
1030 mysql_read_master_stats (db, con);
1032 if ((db->slave_stats) || (db->slave_notif))
1033 mysql_read_slave_stats (db, con);
1035 if (db->wsrep_stats)
1036 mysql_read_wsrep_stats (db, con);
1038 return (0);
1039 } /* int mysql_read */
1041 void module_register (void)
1042 {
1043 plugin_register_complex_config ("mysql", mysql_config);
1044 } /* void module_register */