/**
* collectd - src/mysql.c
- * Copyright (C) 2006,2007 Florian octo Forster
+ * Copyright (C) 2006-2009 Florian octo Forster
+ * Copyright (C) 2009 Sebastian tokkee Harl
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
* Authors:
* Florian octo Forster <octo at verplant.org>
+ * Sebastian tokkee Harl <sh at tokkee.org>
**/
#include "collectd.h"
char *socket;
int port;
+ int master_stats;
+ int slave_stats;
+
MYSQL *con;
int state;
};
return (0);
} /* }}} int mysql_config_set_int */
+static int mysql_config_set_boolean (int *ret_boolean, /* {{{ */
+ oconfig_item_t *ci)
+{
+ int status = 0;
+
+ if (ci->values_num != 1)
+ status = -1;
+
+ if (status == 0)
+ {
+ if (ci->values[0].type == OCONFIG_TYPE_BOOLEAN)
+ *ret_boolean = ci->values[0].value.boolean;
+ else if (ci->values[0].type == OCONFIG_TYPE_STRING)
+ {
+ if (IS_TRUE (ci->values[0].value.string))
+ *ret_boolean = 1;
+ else if (IS_FALSE (ci->values[0].value.string))
+ *ret_boolean = 0;
+ else
+ status = -1;
+ }
+ else
+ status = -1;
+ }
+
+ if (status != 0)
+ {
+ WARNING ("mysql plugin: The `%s' config option "
+ "needs exactly one boolean argument.", ci->key);
+ return (-1);
+ }
+ return (0);
+} /* }}} mysql_config_set_boolean */
+
static int mysql_config (oconfig_item_t *ci) /* {{{ */
{
mysql_database_t *db;
else if ((strcasecmp ("Database", child->key) == 0)
&& (child->children == NULL))
status = mysql_config_set_string (&db->database, child);
+ else if (strcasecmp ("MasterStats", child->key) == 0)
+ status = mysql_config_set_boolean (&db->master_stats, child);
+ else if (strcasecmp ("SlaveStats", child->key) == 0)
+ status = mysql_config_set_boolean (&db->slave_stats, child);
else
{
WARNING ("mysql plugin: Option `%s' not allowed here.", child->key);
sizeof (vl->plugin_instance));
}
-static void counter_submit (const char *type, const char *type_instance,
- counter_t value, mysql_database_t *db)
+static void submit (const char *type, const char *type_instance,
+ value_t *values, size_t values_len, mysql_database_t *db)
{
- value_t values[1];
value_list_t vl = VALUE_LIST_INIT;
- values[0].counter = value;
+ vl.values = values;
+ vl.values_len = values_len;
- vl.values = values;
- vl.values_len = 1;
set_host (db, &vl);
+
sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
- sstrncpy (vl.type, type, sizeof (vl.type));
- sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
set_plugin_instance (db, &vl);
+ sstrncpy (vl.type, type, sizeof (vl.type));
+ if (type_instance != NULL)
+ sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+
plugin_dispatch_values (&vl);
+} /* submit */
+
+static void counter_submit (const char *type, const char *type_instance,
+ counter_t value, mysql_database_t *db)
+{
+ value_t values[1];
+
+ values[0].counter = value;
+ submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
} /* void counter_submit */
+static void gauge_submit (const char *type, const char *type_instance,
+ gauge_t value, mysql_database_t *db)
+{
+ value_t values[1];
+
+ values[0].gauge = value;
+ submit (type, type_instance, values, STATIC_ARRAY_SIZE (values), db);
+} /* void gauge_submit */
+
static void qcache_submit (counter_t hits, counter_t inserts,
counter_t not_cached, counter_t lowmem_prunes,
gauge_t queries_in_cache, mysql_database_t *db)
{
value_t values[5];
- value_list_t vl = VALUE_LIST_INIT;
values[0].counter = hits;
values[1].counter = inserts;
values[3].counter = lowmem_prunes;
values[4].gauge = queries_in_cache;
- vl.values = values;
- vl.values_len = 5;
- set_host (db, &vl);
- sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
- sstrncpy (vl.type, "mysql_qcache", sizeof (vl.type));
- set_plugin_instance (db, &vl);
-
- plugin_dispatch_values (&vl);
+ submit ("mysql_qcache", NULL, values, STATIC_ARRAY_SIZE (values), db);
} /* void qcache_submit */
static void threads_submit (gauge_t running, gauge_t connected, gauge_t cached,
counter_t created, mysql_database_t *db)
{
value_t values[4];
- value_list_t vl = VALUE_LIST_INIT;
values[0].gauge = running;
values[1].gauge = connected;
values[2].gauge = cached;
values[3].counter = created;
- vl.values = values;
- vl.values_len = 4;
- set_host (db, &vl);
- sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
- sstrncpy (vl.type, "mysql_threads", sizeof (vl.type));
- set_plugin_instance (db, &vl);
-
- plugin_dispatch_values (&vl);
+ submit ("mysql_threads", NULL, values, STATIC_ARRAY_SIZE (values), db);
} /* void threads_submit */
static void traffic_submit (counter_t rx, counter_t tx, mysql_database_t *db)
{
value_t values[2];
- value_list_t vl = VALUE_LIST_INIT;
values[0].counter = rx;
values[1].counter = tx;
- vl.values = values;
- vl.values_len = 2;
- set_host (db, &vl);
- sstrncpy (vl.plugin, "mysql", sizeof (vl.plugin));
- sstrncpy (vl.type, "mysql_octets", sizeof (vl.type));
- set_plugin_instance (db, &vl);
-
- plugin_dispatch_values (&vl);
+ submit ("mysql_octets", NULL, values, STATIC_ARRAY_SIZE (values), db);
} /* void traffic_submit */
+static MYSQL_RES *exec_query (MYSQL *con, const char *query)
+{
+ MYSQL_RES *res;
+
+ int query_len = strlen (query);
+
+ if (mysql_real_query (con, query, query_len))
+ {
+ ERROR ("mysql plugin: Failed to execute query: %s",
+ mysql_error (con));
+ INFO ("mysql plugin: SQL query was: %s", query);
+ return (NULL);
+ }
+
+ res = mysql_store_result (con);
+ if (res == NULL)
+ {
+ ERROR ("mysql plugin: Failed to store query result: %s",
+ mysql_error (con));
+ INFO ("mysql plugin: SQL query was: %s", query);
+ return (NULL);
+ }
+
+ return (res);
+} /* exec_query */
+
+static int mysql_read_master_stats (mysql_database_t *db, MYSQL *con)
+{
+ MYSQL_RES *res;
+ MYSQL_ROW row;
+
+ char *query;
+ int field_num;
+ unsigned long long position;
+
+ query = "SHOW MASTER STATUS";
+
+ res = exec_query (con, query);
+ if (res == NULL)
+ return (-1);
+
+ row = mysql_fetch_row (res);
+ if (row == NULL)
+ {
+ ERROR ("mysql plugin: Failed to get master statistics: "
+ "`%s' did not return any rows.", query);
+ return (-1);
+ }
+
+ field_num = mysql_num_fields (res);
+ if (field_num < 2)
+ {
+ ERROR ("mysql plugin: Failed to get master statistics: "
+ "`%s' returned less than two columns.", query);
+ return (-1);
+ }
+
+ position = atoll (row[1]);
+ counter_submit ("mysql_log_position", "master-bin", position, db);
+
+ row = mysql_fetch_row (res);
+ if (row != NULL)
+ WARNING ("mysql plugin: `%s' returned more than one row - "
+ "ignoring further results.", query);
+
+ mysql_free_result (res);
+
+ return (0);
+} /* mysql_read_master_stats */
+
+static int mysql_read_slave_stats (mysql_database_t *db, MYSQL *con)
+{
+ MYSQL_RES *res;
+ MYSQL_ROW row;
+
+ char *query;
+ int field_num;
+
+ /* WTF? libmysqlclient does not seem to provide any means to
+ * translate a column name to a column index ... :-/ */
+ const int READ_MASTER_LOG_POS_IDX = 6;
+ const int EXEC_MASTER_LOG_POS_IDX = 21;
+ const int SECONDS_BEHIND_MASTER_IDX = 32;
+
+ unsigned long long counter;
+ double gauge;
+
+ query = "SHOW SLAVE STATUS";
+
+ res = exec_query (con, query);
+ if (res == NULL)
+ return (-1);
+
+ row = mysql_fetch_row (res);
+ if (row == NULL)
+ {
+ ERROR ("mysql plugin: Failed to get slave statistics: "
+ "`%s' did not return any rows.", query);
+ return (-1);
+ }
+
+ field_num = mysql_num_fields (res);
+ if (field_num < 33)
+ {
+ ERROR ("mysql plugin: Failed to get slave statistics: "
+ "`%s' returned less than 33 columns.", query);
+ return (-1);
+ }
+
+ counter = atoll (row[READ_MASTER_LOG_POS_IDX]);
+ counter_submit ("mysql_log_position", "slave-read", counter, db);
+
+ counter = atoll (row[EXEC_MASTER_LOG_POS_IDX]);
+ counter_submit ("mysql_log_position", "slave-exec", counter, db);
+
+ if (row[SECONDS_BEHIND_MASTER_IDX] != NULL)
+ {
+ gauge = atof (row[SECONDS_BEHIND_MASTER_IDX]);
+ gauge_submit ("time_offset", NULL, gauge, db);
+ }
+
+ row = mysql_fetch_row (res);
+ if (row != NULL)
+ WARNING ("mysql plugin: `%s' returned more than one row - "
+ "ignoring further results.", query);
+
+ mysql_free_result (res);
+
+ return (0);
+} /* mysql_read_slave_stats */
+
static int mysql_read (user_data_t *ud)
{
mysql_database_t *db;
MYSQL_RES *res;
MYSQL_ROW row;
char *query;
- int query_len;
int field_num;
unsigned long long qcache_hits = 0ULL;
if (mysql_get_server_version (con) >= 50002)
query = "SHOW GLOBAL STATUS";
- query_len = strlen (query);
-
- if (mysql_real_query (con, query, query_len))
- {
- ERROR ("mysql_real_query failed: %s\n",
- mysql_error (con));
- return (-1);
- }
-
- if ((res = mysql_store_result (con)) == NULL)
- {
- ERROR ("mysql_store_result failed: %s\n",
- mysql_error (con));
+ res = exec_query (con, query);
+ if (res == NULL)
return (-1);
- }
field_num = mysql_num_fields (res);
while ((row = mysql_fetch_row (res)))
traffic_submit (traffic_incoming, traffic_outgoing, db);
+ if (db->master_stats)
+ mysql_read_master_stats (db, con);
+
+ if (db->slave_stats)
+ mysql_read_slave_stats (db, con);
+
return (0);
} /* int mysql_read */
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