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import plugins
import struct
import time
import memcache
class Plugin(plugins.BasePlugin):
__name__ = 'memcached'
def run(self, config):
'''
pip install python-memcached
add to /etc/agent360.ini
[memcached]
enabled=yes
host=127.0.0.1
port=11211
'''
prev_cache = self.get_agent_cache() # Get absolute values from previous check
try:
socket = config.get('memcached', 'socket')
except:
socket = False
try:
# Connect
if socket is False:
mc = memcache.Client(['%s:%s' % (config.get('memcached', 'host'), config.get('memcached', 'port'))], debug=0)
else:
mc = memcache.Client(['unix:/%s' % socket], debug=0)
except:
return "Could not connect to memcached"
non_delta = (
'accepting_conns',
'bytes',
'uptime',
'total_items',
'total_connections',
'time_in_listen_disabled_us',
'threads',
'rusage_user',
'rusage_system',
'reserved_fds',
'pointer_size',
'malloc_fails',
'lrutail_reflocked',
'listen_disabled_num',
'limit_maxbytes',
'hash_power_level',
'hash_bytes',
'curr_items',
'curr_connections',
'connection_structures',
'conn_yields',
'reclaimed'
)
delta_keys = (
'auth_cmds',
'auth_errors',
'bytes_read',
'bytes_written',
'touch_misses',
'touch_hits',
'incr_misses',
'incr_hits',
'cas_misses',
'cas_badval',
'incr_hits',
'get_misses',
'get_hits',
'expired_unfetched',
'evictions',
'evicted_unfetched',
'delete_misses',
'delete_hits',
'decr_misses',
'decr_hits',
'crawler_reclaimed',
'crawler_items_checked',
'cmd_touch',
'cmd_get',
'cmd_set',
'cmd_flush',
'cmd_misses',
'cmd_badval',
'cmd_hits'
)
results = {}
data = {}
try:
result = mc.get_stats()
for key, key_value in enumerate(result[0][1]):
value = result[0][1][key_value]
key = key_value.lower().strip()
if key in non_delta:
results[key] = float(value)
elif key in delta_keys:
value = float(value)
results[key] = self.absolute_to_per_second(key, float(value), prev_cache)
data[key] = float(value)
else:
pass
except:
return 'Could not fetch memcached stats'
data['ts'] = time.time()
self.set_agent_cache(data)
return results
if __name__ == '__main__':
Plugin().execute()