static int mysql_read (user_data_t *ud)
{
mysql_database_t *db;
MYSQL *con;
MYSQL_RES *res;
MYSQL_ROW row;
char *query;
derive_t qcache_hits = 0;
derive_t qcache_inserts = 0;
derive_t qcache_not_cached = 0;
derive_t qcache_lowmem_prunes = 0;
gauge_t qcache_queries_in_cache = NAN;
gauge_t threads_running = NAN;
gauge_t threads_connected = NAN;
gauge_t threads_cached = NAN;
derive_t threads_created = 0;
unsigned long long traffic_incoming = 0ULL;
unsigned long long traffic_outgoing = 0ULL;
if ((ud == NULL) || (ud->data == NULL))
{
ERROR ("mysql plugin: mysql_database_read: Invalid user data.");
return (-1);
}
db = (mysql_database_t *) ud->data;
/* An error message will have been printed in this case */
if ((con = getconnection (db)) == NULL)
return (-1);
query = "SHOW STATUS";
if (mysql_get_server_version (con) >= 50002)
query = "SHOW GLOBAL STATUS";
res = exec_query (con, query);
if (res == NULL)
return (-1);
while ((row = mysql_fetch_row (res)))
{
char *key;
unsigned long long val;
key = row[0];
val = atoll (row[1]);
if (strncmp (key, "Com_",
strlen ("Com_")) == 0)
{
if (val == 0ULL)
continue;
/* Ignore `prepared statements' */
if (strncmp (key, "Com_stmt_", strlen ("Com_stmt_")) != 0)
counter_submit ("mysql_commands",
key + strlen ("Com_"),
val, db);
}
else if (strncmp (key, "Handler_",
strlen ("Handler_")) == 0)
{
if (val == 0ULL)
continue;
counter_submit ("mysql_handler",
key + strlen ("Handler_"),
val, db);
}
else if (strncmp (key, "Qcache_",
strlen ("Qcache_")) == 0)
{
if (strcmp (key, "Qcache_hits") == 0)
qcache_hits = (derive_t) val;
else if (strcmp (key, "Qcache_inserts") == 0)
qcache_inserts = (derive_t) val;
else if (strcmp (key, "Qcache_not_cached") == 0)
qcache_not_cached = (derive_t) val;
else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
qcache_lowmem_prunes = (derive_t) val;
else if (strcmp (key, "Qcache_queries_in_cache") == 0)
qcache_queries_in_cache = (gauge_t) val;
}
else if (strncmp (key, "Bytes_",
strlen ("Bytes_")) == 0)
{
if (strcmp (key, "Bytes_received") == 0)
traffic_incoming += val;
else if (strcmp (key, "Bytes_sent") == 0)
traffic_outgoing += val;
}
else if (strncmp (key, "Threads_",
strlen ("Threads_")) == 0)
{
if (strcmp (key, "Threads_running") == 0)
threads_running = (gauge_t) val;
else if (strcmp (key, "Threads_connected") == 0)
threads_connected = (gauge_t) val;
else if (strcmp (key, "Threads_cached") == 0)
threads_cached = (gauge_t) val;
else if (strcmp (key, "Threads_created") == 0)
threads_created = (derive_t) val;
}
else if (strncmp (key, "Table_locks_",
strlen ("Table_locks_")) == 0)
{
counter_submit ("mysql_locks",
key + strlen ("Table_locks_"),
val, db);
}
}
mysql_free_result (res); res = NULL;
if ((qcache_hits != 0)
|| (qcache_inserts != 0)
|| (qcache_not_cached != 0)
|| (qcache_lowmem_prunes != 0))
{
derive_submit ("cache_result", "qcache-hits",
qcache_hits, db);
derive_submit ("cache_result", "qcache-inserts",
qcache_inserts, db);
derive_submit ("cache_result", "qcache-not_cached",
qcache_not_cached, db);
derive_submit ("cache_result", "qcache-prunes",
qcache_lowmem_prunes, db);
gauge_submit ("cache_size", "qcache",
qcache_queries_in_cache, db);
}
if (threads_created != 0)
{
gauge_submit ("threads", "running",
threads_running, db);
gauge_submit ("threads", "connected",
threads_connected, db);
gauge_submit ("threads", "cached",
threads_cached, db);
derive_submit ("total_threads", "created",
threads_created, db);
}
traffic_submit (traffic_incoming, traffic_outgoing, db);
if (db->master_stats)
mysql_read_master_stats (db, con);
if ((db->slave_stats) || (db->slave_notif))
mysql_read_slave_stats (db, con);
return (0);
} /* int mysql_read */
static int mysql_read_wsrep_stats (mysql_database_t *db, MYSQL *con)
{
MYSQL_RES *res;
MYSQL_ROW row;
const char *query;
struct {
const char *key;
const char *type;
int ds_type;
} metrics[] = {
{ "wsrep_apply_oooe", "operations", DS_TYPE_DERIVE },
{ "wsrep_apply_oool", "operations", DS_TYPE_DERIVE },
{ "wsrep_causal_reads", "operations", DS_TYPE_DERIVE },
{ "wsrep_commit_oooe", "operations", DS_TYPE_DERIVE },
{ "wsrep_commit_oool", "operations", DS_TYPE_DERIVE },
{ "wsrep_flow_control_recv", "operations", DS_TYPE_DERIVE },
{ "wsrep_flow_control_sent", "operations", DS_TYPE_DERIVE },
{ "wsrep_flow_control_paused", "operations", DS_TYPE_DERIVE },
{ "wsrep_local_bf_aborts", "operations", DS_TYPE_DERIVE },
{ "wsrep_local_cert_failures", "operations", DS_TYPE_DERIVE },
{ "wsrep_local_commits", "operations", DS_TYPE_DERIVE },
{ "wsrep_local_replays", "operations", DS_TYPE_DERIVE },
{ "wsrep_received", "operations", DS_TYPE_DERIVE },
{ "wsrep_replicated", "operations", DS_TYPE_DERIVE },
{ "wsrep_received_bytes", "total_bytes", DS_TYPE_DERIVE },
{ "wsrep_replicated_bytes", "total_bytes", DS_TYPE_DERIVE },
{ "wsrep_apply_window", "gauge", DS_TYPE_GAUGE },
{ "wsrep_commit_window", "gauge", DS_TYPE_GAUGE },
{ "wsrep_cluster_size", "gauge", DS_TYPE_GAUGE },
{ "wsrep_cert_deps_distance", "gauge", DS_TYPE_GAUGE },
{ "wsrep_local_recv_queue", "queue_length", DS_TYPE_GAUGE },
{ "wsrep_local_send_queue", "queue_length", DS_TYPE_GAUGE },
{ NULL, NULL, 0}
};
query = "SHOW GLOBAL STATUS LIKE 'wsrep_%'";
res = exec_query (con, query);
if (res == NULL)
return (-1);
row = mysql_fetch_row (res);
if (row == NULL)
{
ERROR ("mysql plugin: Failed to get wsrep statistics: "
"`%s' did not return any rows.", query);
mysql_free_result (res);
return (-1);
}
while ((row = mysql_fetch_row (res)))
{
int i;
char *key;
unsigned long long val;
key = row[0];
val = atoll (row[1]);
for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
;
if (metrics[i].key == NULL)
continue;
switch (metrics[i].ds_type) {
case DS_TYPE_GAUGE:
gauge_submit(metrics[i].type, key, (gauge_t)val, db);
break;
case DS_TYPE_DERIVE:
derive_submit(metrics[i].type, key, (derive_t)val, db);
break;
}
}
mysql_free_result(res);
return (0);
} /* mysql_read_wsrep_stats */
static int mysql_read (user_data_t *ud)
{
mysql_database_t *db;
MYSQL *con;
MYSQL_RES *res;
MYSQL_ROW row;
const char *query;
derive_t qcache_hits = 0;
derive_t qcache_inserts = 0;
derive_t qcache_not_cached = 0;
derive_t qcache_lowmem_prunes = 0;
gauge_t qcache_queries_in_cache = NAN;
gauge_t threads_running = NAN;
gauge_t threads_connected = NAN;
gauge_t threads_cached = NAN;
derive_t threads_created = 0;
unsigned long long traffic_incoming = 0ULL;
unsigned long long traffic_outgoing = 0ULL;
unsigned long mysql_version = 0ULL;
if ((ud == NULL) || (ud->data == NULL))
{
ERROR ("mysql plugin: mysql_database_read: Invalid user data.");
return (-1);
}
db = (mysql_database_t *) ud->data;
/* An error message will have been printed in this case */
if ((con = getconnection (db)) == NULL)
return (-1);
mysql_version = mysql_get_server_version(con);
query = "SHOW STATUS";
if (mysql_version >= 50002)
query = "SHOW GLOBAL STATUS";
res = exec_query (con, query);
if (res == NULL)
return (-1);
while ((row = mysql_fetch_row (res)))
{
char *key;
unsigned long long val;
key = row[0];
val = atoll (row[1]);
if (strncmp (key, "Com_",
strlen ("Com_")) == 0)
{
if (val == 0ULL)
continue;
/* Ignore `prepared statements' */
if (strncmp (key, "Com_stmt_", strlen ("Com_stmt_")) != 0)
counter_submit ("mysql_commands",
key + strlen ("Com_"),
val, db);
}
else if (strncmp (key, "Handler_",
strlen ("Handler_")) == 0)
{
if (val == 0ULL)
continue;
counter_submit ("mysql_handler",
key + strlen ("Handler_"),
val, db);
}
else if (strncmp (key, "Qcache_",
strlen ("Qcache_")) == 0)
{
if (strcmp (key, "Qcache_hits") == 0)
qcache_hits = (derive_t) val;
else if (strcmp (key, "Qcache_inserts") == 0)
qcache_inserts = (derive_t) val;
else if (strcmp (key, "Qcache_not_cached") == 0)
qcache_not_cached = (derive_t) val;
else if (strcmp (key, "Qcache_lowmem_prunes") == 0)
qcache_lowmem_prunes = (derive_t) val;
else if (strcmp (key, "Qcache_queries_in_cache") == 0)
qcache_queries_in_cache = (gauge_t) val;
}
else if (strncmp (key, "Bytes_",
strlen ("Bytes_")) == 0)
{
if (strcmp (key, "Bytes_received") == 0)
traffic_incoming += val;
else if (strcmp (key, "Bytes_sent") == 0)
traffic_outgoing += val;
}
else if (strncmp (key, "Threads_",
strlen ("Threads_")) == 0)
{
if (strcmp (key, "Threads_running") == 0)
threads_running = (gauge_t) val;
else if (strcmp (key, "Threads_connected") == 0)
threads_connected = (gauge_t) val;
else if (strcmp (key, "Threads_cached") == 0)
threads_cached = (gauge_t) val;
else if (strcmp (key, "Threads_created") == 0)
threads_created = (derive_t) val;
}
else if (strncmp (key, "Table_locks_",
strlen ("Table_locks_")) == 0)
{
counter_submit ("mysql_locks",
key + strlen ("Table_locks_"),
val, db);
}
else if (db->innodb_stats && strncmp (key, "Innodb_", strlen ("Innodb_")) == 0)
{
/* buffer pool */
if (strcmp (key, "Innodb_buffer_pool_pages_data") == 0)
gauge_submit ("mysql_bpool_pages", "data", val, db);
else if (strcmp (key, "Innodb_buffer_pool_pages_dirty") == 0)
gauge_submit ("mysql_bpool_pages", "dirty", val, db);
else if (strcmp (key, "Innodb_buffer_pool_pages_flushed") == 0)
counter_submit ("mysql_bpool_counters", "pages_flushed", val, db);
else if (strcmp (key, "Innodb_buffer_pool_pages_free") == 0)
gauge_submit ("mysql_bpool_pages", "free", val, db);
else if (strcmp (key, "Innodb_buffer_pool_pages_misc") == 0)
gauge_submit ("mysql_bpool_pages", "misc", val, db);
else if (strcmp (key, "Innodb_buffer_pool_pages_total") == 0)
gauge_submit ("mysql_bpool_pages", "total", val, db);
else if (strcmp (key, "Innodb_buffer_pool_read_ahead_rnd") == 0)
counter_submit ("mysql_bpool_counters", "read_ahead_rnd", val, db);
else if (strcmp (key, "Innodb_buffer_pool_read_ahead") == 0)
counter_submit ("mysql_bpool_counters", "read_ahead", val, db);
else if (strcmp (key, "Innodb_buffer_pool_read_ahead_evicted") == 0)
counter_submit ("mysql_bpool_counters", "read_ahead_evicted", val, db);
else if (strcmp (key, "Innodb_buffer_pool_read_requests") == 0)
counter_submit ("mysql_bpool_counters", "read_requests", val, db);
else if (strcmp (key, "Innodb_buffer_pool_reads") == 0)
counter_submit ("mysql_bpool_counters", "reads", val, db);
else if (strcmp (key, "Innodb_buffer_pool_write_requests") == 0)
counter_submit ("mysql_bpool_counters", "write_requests", val, db);
else if (strcmp (key, "Innodb_buffer_pool_bytes_data") == 0)
gauge_submit ("mysql_bpool_bytes", "data", val, db);
else if (strcmp (key, "Innodb_buffer_pool_bytes_dirty") == 0)
gauge_submit ("mysql_bpool_bytes", "dirty", val, db);
/* data */
if (strcmp (key, "Innodb_data_fsyncs") == 0)
counter_submit ("mysql_innodb_data", "fsyncs", val, db);
else if (strcmp (key, "Innodb_data_read") == 0)
counter_submit ("mysql_innodb_data", "read", val, db);
else if (strcmp (key, "Innodb_data_reads") == 0)
counter_submit ("mysql_innodb_data", "reads", val, db);
else if (strcmp (key, "Innodb_data_writes") == 0)
counter_submit ("mysql_innodb_data", "writes", val, db);
else if (strcmp (key, "Innodb_data_written") == 0)
counter_submit ("mysql_innodb_data", "written", val, db);
/* double write */
else if (strcmp (key, "Innodb_dblwr_writes") == 0)
counter_submit ("mysql_innodb_dblwr", "writes", val, db);
else if (strcmp (key, "Innodb_dblwr_pages_written") == 0)
counter_submit ("mysql_innodb_dblwr", "written", val, db);
/* log */
else if (strcmp (key, "Innodb_log_waits") == 0)
counter_submit ("mysql_innodb_log", "waits", val, db);
else if (strcmp (key, "Innodb_log_write_requests") == 0)
counter_submit ("mysql_innodb_log", "write_requests", val, db);
else if (strcmp (key, "Innodb_log_writes") == 0)
counter_submit ("mysql_innodb_log", "writes", val, db);
else if (strcmp (key, "Innodb_os_log_fsyncs") == 0)
counter_submit ("mysql_innodb_log", "fsyncs", val, db);
else if (strcmp (key, "Innodb_os_log_written") == 0)
counter_submit ("mysql_innodb_log", "written", val, db);
/* pages */
else if (strcmp (key, "Innodb_pages_created") == 0)
counter_submit ("mysql_innodb_pages", "created", val, db);
else if (strcmp (key, "Innodb_pages_read") == 0)
counter_submit ("mysql_innodb_pages", "read", val, db);
else if (strcmp (key, "Innodb_pages_written") == 0)
counter_submit ("mysql_innodb_pages", "written", val, db);
/* row lock */
else if (strcmp (key, "Innodb_row_lock_time") == 0)
counter_submit ("mysql_innodb_row_lock", "time", val, db);
else if (strcmp (key, "Innodb_row_lock_waits") == 0)
counter_submit ("mysql_innodb_row_lock", "waits", val, db);
/* rows */
else if (strcmp (key, "Innodb_rows_deleted") == 0)
counter_submit ("mysql_innodb_rows", "deleted", val, db);
else if (strcmp (key, "Innodb_rows_inserted") == 0)
counter_submit ("mysql_innodb_rows", "inserted", val, db);
else if (strcmp (key, "Innodb_rows_read") == 0)
counter_submit ("mysql_innodb_rows", "read", val, db);
else if (strcmp (key, "Innodb_rows_updated") == 0)
counter_submit ("mysql_innodb_rows", "updated", val, db);
}
else if (strncmp (key, "Select_", strlen ("Select_")) == 0)
{
counter_submit ("mysql_select", key + strlen ("Select_"),
val, db);
}
else if (strncmp (key, "Sort_", strlen ("Sort_")) == 0)
{
if (strcmp (key, "Sort_merge_passes") == 0)
counter_submit ("mysql_sort_merge_passes", NULL, val, db);
else if (strcmp (key, "Sort_rows") == 0)
counter_submit ("mysql_sort_rows", NULL, val, db);
else if (strcmp (key, "Sort_range") == 0)
counter_submit ("mysql_sort", "range", val, db);
else if (strcmp (key, "Sort_scan") == 0)
counter_submit ("mysql_sort", "scan", val, db);
}
else if (strncmp (key, "Slow_queries", strlen ("Slow_queries")) == 0)
{
counter_submit ("mysql_slow_queries", NULL , val, db);
}
}
mysql_free_result (res);
res = NULL;
if ((qcache_hits != 0)
|| (qcache_inserts != 0)
|| (qcache_not_cached != 0)
|| (qcache_lowmem_prunes != 0))
{
derive_submit ("cache_result", "qcache-hits",
qcache_hits, db);
derive_submit ("cache_result", "qcache-inserts",
qcache_inserts, db);
derive_submit ("cache_result", "qcache-not_cached",
qcache_not_cached, db);
derive_submit ("cache_result", "qcache-prunes",
qcache_lowmem_prunes, db);
gauge_submit ("cache_size", "qcache",
qcache_queries_in_cache, db);
}
if (threads_created != 0)
{
gauge_submit ("threads", "running",
threads_running, db);
gauge_submit ("threads", "connected",
threads_connected, db);
gauge_submit ("threads", "cached",
threads_cached, db);
derive_submit ("total_threads", "created",
threads_created, db);
}
traffic_submit (traffic_incoming, traffic_outgoing, db);
if (mysql_version >= 50600 && db->innodb_stats)
mysql_read_innodb_stats (db, con);
if (db->master_stats)
mysql_read_master_stats (db, con);
if ((db->slave_stats) || (db->slave_notif))
mysql_read_slave_stats (db, con);
if (db->wsrep_stats)
mysql_read_wsrep_stats (db, con);
return (0);
} /* int mysql_read */
static int mysql_read_innodb_stats (mysql_database_t *db, MYSQL *con)
{
MYSQL_RES *res;
MYSQL_ROW row;
const char *query;
struct {
const char *key;
const char *type;
int ds_type;
} metrics[] = {
{ "metadata_mem_pool_size", "bytes", DS_TYPE_GAUGE },
{ "lock_deadlocks", "mysql_locks", DS_TYPE_DERIVE },
{ "lock_timeouts", "mysql_locks", DS_TYPE_DERIVE },
{ "lock_row_lock_current_waits", "mysql_locks", DS_TYPE_DERIVE },
{ "buffer_pool_size", "bytes", DS_TYPE_GAUGE },
{ "buffer_pool_reads", "operations", DS_TYPE_DERIVE },
{ "buffer_pool_read_requests", "operations", DS_TYPE_DERIVE },
{ "buffer_pool_write_requests", "operations", DS_TYPE_DERIVE },
{ "buffer_pool_wait_free", "operations", DS_TYPE_DERIVE },
{ "buffer_pool_read_ahead", "operations", DS_TYPE_DERIVE },
{ "buffer_pool_read_ahead_evicted", "operations", DS_TYPE_DERIVE },
{ "buffer_pool_pages_total", "gauge", DS_TYPE_GAUGE },
{ "buffer_pool_pages_misc", "gauge", DS_TYPE_GAUGE },
{ "buffer_pool_pages_data", "gauge", DS_TYPE_GAUGE },
{ "buffer_pool_bytes_data", "gauge", DS_TYPE_GAUGE },
{ "buffer_pool_pages_dirty", "gauge", DS_TYPE_GAUGE },
{ "buffer_pool_bytes_dirty", "gauge", DS_TYPE_GAUGE },
{ "buffer_pool_pages_free", "gauge", DS_TYPE_GAUGE },
{ "buffer_pages_created", "operations", DS_TYPE_DERIVE },
{ "buffer_pages_written", "operations", DS_TYPE_DERIVE },
{ "buffer_pages_read", "operations", DS_TYPE_DERIVE },
{ "buffer_data_reads", "operations", DS_TYPE_DERIVE },
{ "buffer_data_written", "operations", DS_TYPE_DERIVE },
{ "os_data_reads", "operations", DS_TYPE_DERIVE },
{ "os_data_writes", "operations", DS_TYPE_DERIVE },
{ "os_data_fsyncs", "operations", DS_TYPE_DERIVE },
{ "os_log_bytes_written", "operations", DS_TYPE_DERIVE },
{ "os_log_fsyncs", "operations", DS_TYPE_DERIVE },
{ "os_log_pending_fsyncs", "operations", DS_TYPE_DERIVE },
{ "os_log_pending_writes", "operations", DS_TYPE_DERIVE },
{ "trx_rseg_history_len", "gauge", DS_TYPE_GAUGE },
{ "log_waits", "operations", DS_TYPE_DERIVE },
{ "log_write_requests", "operations", DS_TYPE_DERIVE },
{ "log_writes", "operations", DS_TYPE_DERIVE },
{ "adaptive_hash_searches", "operations", DS_TYPE_DERIVE },
{ "file_num_open_files", "gauge", DS_TYPE_GAUGE },
{ "ibuf_merges_insert", "operations", DS_TYPE_DERIVE },
{ "ibuf_merges_delete_mark", "operations", DS_TYPE_DERIVE },
{ "ibuf_merges_delete", "operations", DS_TYPE_DERIVE },
{ "ibuf_merges_discard_insert", "operations", DS_TYPE_DERIVE },
{ "ibuf_merges_discard_delete_mark", "operations", DS_TYPE_DERIVE },
{ "ibuf_merges_discard_delete", "operations", DS_TYPE_DERIVE },
{ "ibuf_merges_discard_merges", "operations", DS_TYPE_DERIVE },
{ "ibuf_size", "bytes", DS_TYPE_GAUGE },
{ "innodb_activity_count", "gauge", DS_TYPE_GAUGE },
{ "innodb_dblwr_writes", "operations", DS_TYPE_DERIVE },
{ "innodb_dblwr_pages_written", "operations", DS_TYPE_DERIVE },
{ "innodb_dblwr_page_size", "gauge", DS_TYPE_GAUGE },
{ "innodb_rwlock_s_spin_waits", "operations", DS_TYPE_DERIVE },
{ "innodb_rwlock_x_spin_waits", "operations", DS_TYPE_DERIVE },
{ "innodb_rwlock_s_spin_rounds", "operations", DS_TYPE_DERIVE },
{ "innodb_rwlock_x_spin_rounds", "operations", DS_TYPE_DERIVE },
{ "innodb_rwlock_s_os_waits", "operations", DS_TYPE_DERIVE },
{ "innodb_rwlock_x_os_waits", "operations", DS_TYPE_DERIVE },
{ "dml_reads", "operations", DS_TYPE_DERIVE },
{ "dml_inserts", "operations", DS_TYPE_DERIVE },
{ "dml_deletes", "operations", DS_TYPE_DERIVE },
{ "dml_updates", "operations", DS_TYPE_DERIVE },
{ NULL, NULL, 0}
};
query = "SELECT name, count, type FROM information_schema.innodb_metrics WHERE status = 'enabled'";
res = exec_query (con, query);
if (res == NULL)
return (-1);
while ((row = mysql_fetch_row (res)))
{
int i;
char *key;
unsigned long long val;
key = row[0];
val = atoll (row[1]);
for (i = 0; metrics[i].key != NULL && strcmp(metrics[i].key, key) != 0; i++)
;
if (metrics[i].key == NULL)
continue;
switch (metrics[i].ds_type) {
case DS_TYPE_COUNTER:
counter_submit(metrics[i].type, key, (counter_t)val, db);
break;
case DS_TYPE_GAUGE:
gauge_submit(metrics[i].type, key, (gauge_t)val, db);
break;
case DS_TYPE_DERIVE:
derive_submit(metrics[i].type, key, (derive_t)val, db);
break;
}
}
mysql_free_result(res);
return (0);
}