1 /**
2 * collectd - src/mysql.c
3 * Copyright (C) 2006-2009 Florian octo Forster
4 * Copyright (C) 2008 Mirko Buffoni
5 * Copyright (C) 2009 Doug MacEachern
6 * Copyright (C) 2009 Sebastian tokkee Harl
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; only version 2 of the License is applicable.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 *
21 * Authors:
22 * Florian octo Forster <octo at verplant.org>
23 * Mirko Buffoni <briareos at eswat.org>
24 * Doug MacEachern <dougm at hyperic.com>
25 * Sebastian tokkee Harl <sh at tokkee.org>
26 **/
28 #include "collectd.h"
29 #include "common.h"
30 #include "plugin.h"
31 #include "configfile.h"
33 #ifdef HAVE_MYSQL_H
34 #include <mysql.h>
35 #elif defined(HAVE_MYSQL_MYSQL_H)
36 #include <mysql/mysql.h>
37 #endif
39 /* TODO: Understand `Select_*' and possibly do that stuff as well.. */
41 struct mysql_database_s /* {{{ */
42 {
43 /* instance == NULL => legacy mode */
44 char *instance;
45 char *host;
46 char *user;
47 char *pass;
48 char *database;
49 char *socket;
50 int port;
52 int master_stats;
53 int slave_stats;
55 int slave_notif;
56 int slave_io_running;
57 int slave_sql_running;
59 MYSQL *con;
60 int state;
61 };
62 typedef struct mysql_database_s mysql_database_t; /* }}} */
64 static int mysql_read (user_data_t *ud);
66 static void mysql_database_free (void *arg) /* {{{ */
67 {
68 mysql_database_t *db;
70 DEBUG ("mysql plugin: mysql_database_free (arg = %p);", arg);
72 db = (mysql_database_t *) arg;
74 if (db == NULL)
75 return;
77 if (db->con != NULL)
78 mysql_close (db->con);
80 sfree (db->host);
81 sfree (db->user);
82 sfree (db->pass);
83 sfree (db->socket);
84 sfree (db->instance);
85 sfree (db->database);
86 sfree (db);
87 } /* }}} void mysql_database_free */
89 /* Configuration handling functions {{{
90 *
91 * <Plugin mysql>
92 * <Database "plugin_instance1">
93 * Host "localhost"
94 * Port 22000
95 * ...
96 * </Database>
97 * </Plugin>
98 */
100 static int mysql_config_set_string (char **ret_string, /* {{{ */
101 oconfig_item_t *ci)
102 {
103 char *string;
105 if ((ci->values_num != 1)
106 || (ci->values[0].type != OCONFIG_TYPE_STRING))
107 {
108 WARNING ("mysql plugin: The `%s' config option "
109 "needs exactly one string argument.", ci->key);
110 return (-1);
111 }
113 string = strdup (ci->values[0].value.string);
114 if (string == NULL)
115 {
116 ERROR ("mysql plugin: strdup failed.");
117 return (-1);
118 }
120 if (*ret_string != NULL)
121 free (*ret_string);
122 *ret_string = string;
124 return (0);
125 } /* }}} int mysql_config_set_string */
127 static int mysql_config_set_int (int *ret_int, /* {{{ */
128 oconfig_item_t *ci)
129 {
130 if ((ci->values_num != 1)
131 || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
132 {
133 WARNING ("mysql plugin: The `%s' config option "
134 "needs exactly one string argument.", ci->key);
135 return (-1);
136 }
138 *ret_int = ci->values[0].value.number;
140 return (0);
141 } /* }}} int mysql_config_set_int */
143 static int mysql_config_set_boolean (int *ret_boolean, /* {{{ */
144 oconfig_item_t *ci)
145 {
146 int status = 0;
148 if (ci->values_num != 1)
149 status = -1;
151 if (status == 0)
152 {
153 if (ci->values[0].type == OCONFIG_TYPE_BOOLEAN)
154 *ret_boolean = ci->values[0].value.boolean;
155 else if (ci->values[0].type == OCONFIG_TYPE_STRING)
156 {
157 if (IS_TRUE (ci->values[0].value.string))
158 *ret_boolean = 1;
159 else if (IS_FALSE (ci->values[0].value.string))
160 *ret_boolean = 0;
161 else
162 status = -1;
163 }
164 else
165 status = -1;
166 }
168 if (status != 0)
169 {
170 WARNING ("mysql plugin: The `%s' config option "
171 "needs exactly one boolean argument.", ci->key);
172 return (-1);
173 }
174 return (0);
175 } /* }}} mysql_config_set_boolean */
177 static int mysql_config (oconfig_item_t *ci) /* {{{ */
178 {
179 mysql_database_t *db;
180 int plugin_block;
181 int status = 0;
182 int i;
184 if ((ci->values_num != 1)
185 || (ci->values[0].type != OCONFIG_TYPE_STRING))
186 {
187 WARNING ("mysql plugin: The `Database' block "
188 "needs exactly one string argument.");
189 return (-1);
190 }
192 db = (mysql_database_t *) malloc (sizeof (*db));
193 if (db == NULL)
194 {
195 ERROR ("mysql plugin: malloc failed.");
196 return (-1);
197 }
198 memset (db, 0, sizeof (*db));
200 /* initialize all the pointers */
201 db->host = NULL;
202 db->user = NULL;
203 db->pass = NULL;
204 db->database = NULL;
205 db->socket = NULL;
206 db->con = NULL;
208 /* trigger a notification, if it's not running */
209 db->slave_io_running = 1;
210 db->slave_sql_running = 1;
212 plugin_block = 1;
213 if (strcasecmp ("Plugin", ci->key) == 0)
214 {
215 db->instance = NULL;
216 }
217 else if (strcasecmp ("Database", ci->key) == 0)
218 {
219 plugin_block = 0;
220 status = mysql_config_set_string (&db->instance, ci);
221 if (status != 0)
222 {
223 sfree (db);
224 return (status);
225 }
226 assert (db->instance != NULL);
227 }
228 else
229 {
230 ERROR ("mysql plugin: mysql_config: "
231 "Invalid key: %s", ci->key);
232 return (-1);
233 }
235 /* Fill the `mysql_database_t' structure.. */
236 for (i = 0; i < ci->children_num; i++)
237 {
238 oconfig_item_t *child = ci->children + i;
240 if (strcasecmp ("Host", child->key) == 0)
241 status = mysql_config_set_string (&db->host, child);
242 else if (strcasecmp ("User", child->key) == 0)
243 status = mysql_config_set_string (&db->user, child);
244 else if (strcasecmp ("Password", child->key) == 0)
245 status = mysql_config_set_string (&db->pass, child);
246 else if (strcasecmp ("Port", child->key) == 0)
247 status = mysql_config_set_int (&db->port, child);
248 else if (strcasecmp ("Socket", child->key) == 0)
249 status = mysql_config_set_string (&db->socket, child);
250 /* Check if we're currently handling the `Plugin' block. If so,
251 * handle `Database' _blocks_, too. */
252 else if ((plugin_block != 0)
253 && (strcasecmp ("Database", child->key) == 0)
254 && (child->children != NULL))
255 {
256 /* If `plugin_block > 1', there has been at least one
257 * `Database' block */
258 plugin_block++;
259 status = mysql_config (child);
260 }
261 /* Now handle ordinary `Database' options (without children) */
262 else if ((strcasecmp ("Database", child->key) == 0)
263 && (child->children == NULL))
264 status = mysql_config_set_string (&db->database, child);
265 else if (strcasecmp ("MasterStats", child->key) == 0)
266 status = mysql_config_set_boolean (&db->master_stats, child);
267 else if (strcasecmp ("SlaveStats", child->key) == 0)
268 status = mysql_config_set_boolean (&db->slave_stats, child);
269 else if (strcasecmp ("SlaveNotifications", child->key) == 0)
270 status = mysql_config_set_boolean (&db->slave_notif, child);
271 else
272 {
273 WARNING ("mysql plugin: Option `%s' not allowed here.", child->key);
274 status = -1;
275 }
277 if (status != 0)
278 break;
279 }
281 /* Check if there were any `Database' blocks. */
282 if (plugin_block > 1)
283 {
284 /* There were connection blocks. Don't use any legacy stuff. */
285 if ((db->host != NULL)
286 || (db->user != NULL)
287 || (db->pass != NULL)
288 || (db->database != NULL)
289 || (db->socket != NULL)
290 || (db->port != 0))
291 {
292 WARNING ("mysql plugin: At least one <Database> "
293 "block has been found. The legacy "
294 "configuration will be ignored.");
295 }
296 mysql_database_free (db);
297 return (0);
298 }
299 else if (plugin_block != 0)
300 {
301 WARNING ("mysql plugin: You're using the legacy "
302 "configuration options. Please consider "
303 "updating your configuration!");
304 }
306 /* Check that all necessary options have been given. */
307 while (status == 0)
308 {
309 /* Zero is allowed and automatically handled by
310 * `mysql_real_connect'. */
311 if ((db->port < 0) || (db->port > 65535))
312 {
313 ERROR ("mysql plugin: Database %s: Port number out "
314 "of range: %i",
315 (db->instance != NULL)
316 ? db->instance
317 : "<legacy>",
318 db->port);
319 status = -1;
320 }
321 break;
322 } /* while (status == 0) */
324 /* If all went well, register this database for reading */
325 if (status == 0)
326 {
327 user_data_t ud;
328 char cb_name[DATA_MAX_NAME_LEN];
330 DEBUG ("mysql plugin: Registering new read callback: %s",
331 (db->database != NULL) ? db->database : "<default>");
333 memset (&ud, 0, sizeof (ud));
334 ud.data = (void *) db;
335 ud.free_func = mysql_database_free;
337 if (db->database != NULL)
338 ssnprintf (cb_name, sizeof (cb_name), "mysql-%s",
339 db->database);
340 else
341 sstrncpy (cb_name, "mysql", sizeof (cb_name));
343 plugin_register_complex_read (cb_name, mysql_read,
344 /* interval = */ NULL, &ud);
345 }
346 else
347 {
348 mysql_database_free (db);
349 return (-1);
350 }
352 return (0);
353 } /* }}} int mysql_config */
355 /* }}} End of configuration handling functions */
357 static MYSQL *getconnection (mysql_database_t *db)
358 {
359 if (db->state != 0)
360 {
361 int err;
362 if ((err = mysql_ping (db->con)) != 0)
363 {
364 WARNING ("mysql_ping failed: %s", mysql_error (db->con));
365 db->state = 0;
366 }
367 else
368 {
369 db->state = 1;
370 return (db->con);
371 }
372 }
374 if ((db->con = mysql_init (db->con)) == NULL)
375 {
376 ERROR ("mysql_init failed: %s", mysql_error (db->con));
377 db->state = 0;
378 return (NULL);
379 }
381 if (mysql_real_connect (db->con, db->host, db->user, db->pass,
382 db->database, db->port, db->socket, 0) == NULL)
383 {
384 ERROR ("mysql plugin: Failed to connect to database %s "
385 "at server %s: %s",
386 (db->database != NULL) ? db->database : "<none>",
387 (db->host != NULL) ? db->host : "localhost",
388 mysql_error (db->con));
389 db->state = 0;
390 return (NULL);
391 }
392 else
393 {
394 INFO ("mysql plugin: Sucessfully connected to database %s "
395 "at server %s (server version: %s, protocol version: %d)",
396 (db->database != NULL) ? db->database : "<none>",
397 mysql_get_host_info (db->con),
398 mysql_get_server_info (db->con),
399 mysql_get_proto_info (db->con));
400 db->state = 1;
401 return (db->con);
402 }
403 } /* static MYSQL *getconnection (mysql_database_t *db) */
405 static void set_host (mysql_database_t *db, char *buf, size_t buflen)
406 {
407 /* XXX legacy mode - use hostname_g */
408 if (db->instance == NULL)
409 sstrncpy (buf, hostname_g, buflen);
410 else
411 {
412 if ((db->host == NULL)
413 || (strcmp ("", db->host) == 0)
414 || (strcmp ("localhost", db->host) == 0))
415 sstrncpy (buf, hostname_g, buflen);
416 else
417 sstrncpy (buf, db->host, buflen);
418 }
419 }
421 static void set_plugin_instance (mysql_database_t *db,
422 char *buf, size_t buflen)
423 {
424 /* XXX legacy mode - no plugin_instance */
425 if (db->instance == NULL)
426 sstrncpy (buf, "", buflen);
427 else
428 sstrncpy (buf, db->instance, buflen);
429 }
431 static void submit (const char *type, const char *type_instance,
432 value_t *values, size_t values_len, mysql_database_t *db)
433 {
434 value_list_t vl = VALUE_LIST_INIT;
436 vl.values = values;
437 vl.values_len = values_len;
439 set_host (db, vl.host, sizeof (vl.host));
441 sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
442 set_plugin_instance (db, vl.plugin_instance, sizeof (vl.plugin_instance));
444 sstrncpy (vl.type, type, sizeof (vl.type));
445 if (type_instance != NULL)
446 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
448 plugin_dispatch_values (&vl);
449 } /* submit */
451 static void counter_submit (const char *type, const char *type_instance,
452 counter_t value, mysql_database_t *db)
453 {
454 value_t values[1];
456 values[0].counter = value;
457 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
458 } /* void counter_submit */
460 static void gauge_submit (const char *type, const char *type_instance,
461 gauge_t value, mysql_database_t *db)
462 {
463 value_t values[1];
465 values[0].gauge = value;
466 submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
467 } /* void gauge_submit */
469 static void qcache_submit (counter_t hits, counter_t inserts,
470 counter_t not_cached, counter_t lowmem_prunes,
471 gauge_t queries_in_cache, mysql_database_t *db)
472 {
473 value_t values[5];
475 values[0].counter = hits;
476 values[1].counter = inserts;
477 values[2].counter = not_cached;
478 values[3].counter = lowmem_prunes;
479 values[4].gauge = queries_in_cache;
481 submit ("mysql_qcache", NULL, values, STATIC_ARRAY_SIZE (values), db);
482 } /* void qcache_submit */
484 static void threads_submit (gauge_t running, gauge_t connected, gauge_t cached,
485 counter_t created, mysql_database_t *db)
486 {
487 value_t values[4];
489 values[0].gauge = running;
490 values[1].gauge = connected;
491 values[2].gauge = cached;
492 values[3].counter = created;
494 submit ("mysql_threads", NULL, values, STATIC_ARRAY_SIZE (values), db);
495 } /* void threads_submit */
497 static void traffic_submit (counter_t rx, counter_t tx, mysql_database_t *db)
498 {
499 value_t values[2];
501 values[0].counter = rx;
502 values[1].counter = tx;
504 submit ("mysql_octets", NULL, values, STATIC_ARRAY_SIZE (values), db);
505 } /* void traffic_submit */
507 static MYSQL_RES *exec_query (MYSQL *con, const char *query)
508 {
509 MYSQL_RES *res;
511 int query_len = strlen (query);
513 if (mysql_real_query (con, query, query_len))
514 {
515 ERROR ("mysql plugin: Failed to execute query: %s",
516 mysql_error (con));
517 INFO ("mysql plugin: SQL query was: %s", query);
518 return (NULL);
519 }
521 res = mysql_store_result (con);
522 if (res == NULL)
523 {
524 ERROR ("mysql plugin: Failed to store query result: %s",
525 mysql_error (con));
526 INFO ("mysql plugin: SQL query was: %s", query);
527 return (NULL);
528 }
530 return (res);
531 } /* exec_query */
533 static int mysql_read_master_stats (mysql_database_t *db, MYSQL *con)
534 {
535 MYSQL_RES *res;
536 MYSQL_ROW row;
538 char *query;
539 int field_num;
540 unsigned long long position;
542 query = "SHOW MASTER STATUS";
544 res = exec_query (con, query);
545 if (res == NULL)
546 return (-1);
548 row = mysql_fetch_row (res);
549 if (row == NULL)
550 {
551 ERROR ("mysql plugin: Failed to get master statistics: "
552 "`%s' did not return any rows.", query);
553 return (-1);
554 }
556 field_num = mysql_num_fields (res);
557 if (field_num < 2)
558 {
559 ERROR ("mysql plugin: Failed to get master statistics: "
560 "`%s' returned less than two columns.", query);
561 return (-1);
562 }
564 position = atoll (row[1]);
565 counter_submit ("mysql_log_position", "master-bin", position, db);
567 row = mysql_fetch_row (res);
568 if (row != NULL)
569 WARNING ("mysql plugin: `%s' returned more than one row - "
570 "ignoring further results.", query);
572 mysql_free_result (res);
574 return (0);
575 } /* mysql_read_master_stats */
577 static int mysql_read_slave_stats (mysql_database_t *db, MYSQL *con)
578 {
579 MYSQL_RES *res;
580 MYSQL_ROW row;
582 char *query;
583 int field_num;
585 /* WTF? libmysqlclient does not seem to provide any means to
586 * translate a column name to a column index ... :-/ */
587 const int READ_MASTER_LOG_POS_IDX = 6;
588 const int SLAVE_IO_RUNNING_IDX = 10;
589 const int SLAVE_SQL_RUNNING_IDX = 11;
590 const int EXEC_MASTER_LOG_POS_IDX = 21;
591 const int SECONDS_BEHIND_MASTER_IDX = 32;
593 query = "SHOW SLAVE STATUS";
595 res = exec_query (con, query);
596 if (res == NULL)
597 return (-1);
599 row = mysql_fetch_row (res);
600 if (row == NULL)
601 {
602 ERROR ("mysql plugin: Failed to get slave statistics: "
603 "`%s' did not return any rows.", query);
604 return (-1);
605 }
607 field_num = mysql_num_fields (res);
608 if (field_num < 33)
609 {
610 ERROR ("mysql plugin: Failed to get slave statistics: "
611 "`%s' returned less than 33 columns.", query);
612 return (-1);
613 }
615 if (db->slave_stats)
616 {
617 unsigned long long counter;
618 double gauge;
620 counter = atoll (row[READ_MASTER_LOG_POS_IDX]);
621 counter_submit ("mysql_log_position", "slave-read", counter, db);
623 counter = atoll (row[EXEC_MASTER_LOG_POS_IDX]);
624 counter_submit ("mysql_log_position", "slave-exec", counter, db);
626 if (row[SECONDS_BEHIND_MASTER_IDX] != NULL)
627 {
628 gauge = atof (row[SECONDS_BEHIND_MASTER_IDX]);
629 gauge_submit ("time_offset", NULL, gauge, db);
630 }
631 }
633 if (db->slave_notif)
634 {
635 notification_t n = { 0, time (NULL), "", "",
636 "mysql", "", "time_offset", "", NULL };
638 char *io, *sql;
640 io = row[SLAVE_IO_RUNNING_IDX];
641 sql = row[SLAVE_SQL_RUNNING_IDX];
643 set_host (db, n.host, sizeof (n.host));
644 set_plugin_instance (db,
645 n.plugin_instance, sizeof (n.plugin_instance));
647 if (((io == NULL) || (strcasecmp (io, "yes") != 0))
648 && (db->slave_io_running))
649 {
650 n.severity = NOTIF_WARNING;
651 ssnprintf (n.message, sizeof (n.message),
652 "slave I/O thread not started or not connected to master");
653 plugin_dispatch_notification (&n);
654 db->slave_io_running = 0;
655 }
656 else if (((io != NULL) && (strcasecmp (io, "yes") == 0))
657 && (! db->slave_io_running))
658 {
659 n.severity = NOTIF_OKAY;
660 ssnprintf (n.message, sizeof (n.message),
661 "slave I/O thread started and connected to master");
662 plugin_dispatch_notification (&n);
663 db->slave_io_running = 1;
664 }
666 if (((sql == NULL) || (strcasecmp (sql, "yes") != 0))
667 && (db->slave_sql_running))
668 {
669 n.severity = NOTIF_WARNING;
670 ssnprintf (n.message, sizeof (n.message),
671 "slave SQL thread not started");
672 plugin_dispatch_notification (&n);
673 db->slave_sql_running = 0;
674 }
675 else if (((sql != NULL) && (strcasecmp (sql, "yes") == 0))
676 && (! db->slave_sql_running))
677 {
678 n.severity = NOTIF_OKAY;
679 ssnprintf (n.message, sizeof (n.message),
680 "slave SQL thread started");
681 plugin_dispatch_notification (&n);
682 db->slave_sql_running = 0;
683 }
684 }
686 row = mysql_fetch_row (res);
687 if (row != NULL)
688 WARNING ("mysql plugin: `%s' returned more than one row - "
689 "ignoring further results.", query);
691 mysql_free_result (res);
693 return (0);
694 } /* mysql_read_slave_stats */
696 static int mysql_read (user_data_t *ud)
697 {
698 mysql_database_t *db;
699 MYSQL *con;
700 MYSQL_RES *res;
701 MYSQL_ROW row;
702 char *query;
703 int field_num;
705 unsigned long long qcache_hits = 0ULL;
706 unsigned long long qcache_inserts = 0ULL;
707 unsigned long long qcache_not_cached = 0ULL;
708 unsigned long long qcache_lowmem_prunes = 0ULL;
709 int qcache_queries_in_cache = -1;
711 int threads_running = -1;
712 int threads_connected = -1;
713 int threads_cached = -1;
714 unsigned long long threads_created = 0ULL;
716 unsigned long long traffic_incoming = 0ULL;
717 unsigned long long traffic_outgoing = 0ULL;
719 if ((ud == NULL) || (ud->data == NULL))
720 {
721 ERROR ("mysql plugin: mysql_database_read: Invalid user data.");
722 return (-1);
723 }
725 db = (mysql_database_t *) ud->data;
727 /* An error message will have been printed in this case */
728 if ((con = getconnection (db)) == NULL)
729 return (-1);
731 query = "SHOW STATUS";
732 if (mysql_get_server_version (con) >= 50002)
733 query = "SHOW GLOBAL STATUS";
735 res = exec_query (con, query);
736 if (res == NULL)
737 return (-1);
739 field_num = mysql_num_fields (res);
740 while ((row = mysql_fetch_row (res)))
741 {
742 char *key;
743 unsigned long long val;
745 key = row[0];
746 val = atoll (row[1]);
748 if (strncmp (key, "Com_", 4) == 0)
749 {
750 if (val == 0ULL)
751 continue;
753 /* Ignore `prepared statements' */
754 if (strncmp (key, "Com_stmt_", 9) != 0)
755 counter_submit ("mysql_commands", key + 4, val, db);
756 }
757 else if (strncmp (key, "Handler_", 8) == 0)
758 {
759 if (val == 0ULL)
760 continue;
762 counter_submit ("mysql_handler", key + 8, val, db);
763 }
764 else if (strncmp (key, "Qcache_", 7) == 0)
765 {
766 if (strcmp (key, "Qcache_hits") == 0)
767 qcache_hits = val;
768 else if (strcmp (key, "Qcache_inserts") == 0)
769 qcache_inserts = val;
770 else if (strcmp (key, "Qcache_not_cached") == 0)
771 qcache_not_cached = val;
772 else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
773 qcache_lowmem_prunes = val;
774 else if (strcmp (key, "Qcache_queries_in_cache") == 0)
775 qcache_queries_in_cache = (int) val;
776 }
777 else if (strncmp (key, "Bytes_", 6) == 0)
778 {
779 if (strcmp (key, "Bytes_received") == 0)
780 traffic_incoming += val;
781 else if (strcmp (key, "Bytes_sent") == 0)
782 traffic_outgoing += val;
783 }
784 else if (strncmp (key, "Threads_", 8) == 0)
785 {
786 if (strcmp (key, "Threads_running") == 0)
787 threads_running = (int) val;
788 else if (strcmp (key, "Threads_connected") == 0)
789 threads_connected = (int) val;
790 else if (strcmp (key, "Threads_cached") == 0)
791 threads_cached = (int) val;
792 else if (strcmp (key, "Threads_created") == 0)
793 threads_created = val;
794 }
795 }
796 mysql_free_result (res); res = NULL;
798 if ((qcache_hits != 0ULL)
799 || (qcache_inserts != 0ULL)
800 || (qcache_not_cached != 0ULL)
801 || (qcache_lowmem_prunes != 0ULL))
802 qcache_submit (qcache_hits, qcache_inserts, qcache_not_cached,
803 qcache_lowmem_prunes, qcache_queries_in_cache, db);
805 if (threads_created != 0ULL)
806 threads_submit (threads_running, threads_connected,
807 threads_cached, threads_created, db);
809 traffic_submit (traffic_incoming, traffic_outgoing, db);
811 if (db->master_stats)
812 mysql_read_master_stats (db, con);
814 if ((db->slave_stats) || (db->slave_notif))
815 mysql_read_slave_stats (db, con);
817 return (0);
818 } /* int mysql_read */
820 void module_register (void)
821 {
822 plugin_register_complex_config ("mysql", mysql_config);
823 } /* void module_register */