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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import time
import MySQLdb
import plugins
class Plugin(plugins.BasePlugin):
__name__ = 'mysql'
def run(self, config):
'''
MySQL metrics plugin
'''
prev_cache = self.get_agent_cache() # Get absolute values from previous check
auth = {}
try:
auth['port'] = int(config.get('mysql', 'port'))
except ValueError:
auth['port'] = 3306
try:
auth['user'] = config.get('mysql', 'username')
except:
auth['user'] = 'root'
try:
auth['passwd'] = config.get('mysql', 'password')
except:
auth['passwd'] = ''
try:
auth['host'] = config.get('mysql', 'host')
except:
auth['unix_socket'] = config.get('mysql', 'socket')
try:
auth['db'] = config.get('mysql', 'database')
except:
auth['db'] = 'mysql'
db = MySQLdb.connect(**auth)
cursor = db.cursor()
cursor.execute("SHOW GLOBAL STATUS;")
query_result = cursor.fetchall()
non_delta = (
'max_used_connections',
'open_files',
'open_tables',
'qcache_free_blocks',
'qcache_free_memory',
'qcache_total_blocks',
'slave_open_temp_tables',
'threads_cached',
'threads_connected',
'threads_running',
'uptime'
)
delta_keys = (
'aborted_clients',
'aborted_connects',
'binlog_cache_disk_use',
'binlog_cache_use',
'bytes_received',
'bytes_sent',
'com_delete',
'com_delete_multi',
'com_insert',
'com_insert_select',
'com_load',
'com_replace',
'com_replace_select',
'com_select',
'com_update',
'com_update_multi',
'connections',
'created_tmp_disk_tables',
'created_tmp_files',
'created_tmp_tables',
'key_reads',
'key_read_requests',
'key_writes',
'key_write_requests',
'max_used_connections',
'open_files',
'open_tables',
'opened_tables',
'qcache_free_blocks',
'qcache_free_memory',
'qcache_hits',
'qcache_inserts',
'qcache_lowmem_prunes',
'qcache_not_cached',
'qcache_queries_in_cache',
'qcache_total_blocks',
'questions',
'select_full_join',
'select_full_range_join',
'select_range',
'select_range_check',
'select_scan',
'slave_open_temp_tables',
'slave_retried_transactions',
'slow_launch_threads',
'slow_queries',
'sort_range',
'sort_rows',
'sort_scan',
'table_locks_immediate',
'table_locks_waited',
'threads_cached',
'threads_connected',
'threads_created',
'threads_running'
)
results = dict()
data = dict()
constructors = [str, float]
for key, value in query_result:
key = key.lower().strip()
for c in constructors:
try:
value = c(value)
except ValueError:
pass
if key in non_delta:
results[key] = value
elif key in delta_keys and type(value) is not str:
results[key] = self.absolute_to_per_second(key, float(value), prev_cache)
data[key] = float(value)
else:
pass
cursor = db.cursor(MySQLdb.cursors.DictCursor)
cursor.execute('SHOW SLAVE STATUS')
query_result_slave = cursor.fetchone()
non_delta_slave = (
'slave_io_state',
'master_host',
'seconds_behind_master',
'read_master_log_pos',
'relay_log_pos',
'slave_io_running',
'slave_sql_running',
'last_error',
'exec_master_log_pos',
'relay_log_space',
'slave_sql_running_state',
'master_retry_count'
)
if query_result_slave is None:
query_result_slave = dict()
for key, value in query_result_slave.items():
key = key.lower().strip()
if key == 'slave_sql_running':
value = 1 if value == 'Yes' else 0
if key == 'slave_io_running':
value = 1 if value == 'Yes' else 0
for c in constructors:
try:
value = c(value)
except ValueError:
pass
if key in non_delta_slave and type(value) is not str:
results[key] = value
else:
pass
db.close()
data['ts'] = time.time()
self.set_agent_cache(data)
return results
if __name__ == '__main__':
Plugin().execute()