ail-framework/bin/lib/d4.py

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#!/usr/bin/env python3
# -*-coding:UTF-8 -*
import os
import sys
import time
import redis
import d4_pyclient
sys.path.append(os.path.join(os.environ['AIL_BIN'], 'lib'))
import ConfigLoader
config_loader = ConfigLoader.ConfigLoader()
r_serv_db = config_loader.get_redis_conn("Kvrocks_DB")
r_cache = config_loader.get_redis_conn("Redis_Cache")
config_loader = None
def get_ail_uuid():
return r_serv_db.get('ail:uuid')
def get_d4_client_config_dir():
return os.path.join(os.environ['AIL_HOME'], 'configs', 'd4client_passiveDNS_conf')
def create_d4_config_file(filename, content):
if not os.path.isfile(filename):
with open(filename, 'a') as f:
f.write(content)
def get_d4_client_config():
d4_client_config = get_d4_client_config_dir()
filename = os.path.join(d4_client_config, 'uuid')
if not os.path.isfile(filename):
create_d4_config_file(filename, get_ail_uuid())
return d4_client_config
def is_passive_dns_enabled(cache=True):
if cache:
res = r_cache.get('d4:passivedns:enabled')
if res is None:
res = r_serv_db.hget('d4:passivedns', 'enabled') == 'True'
r_cache.set('d4:passivedns:enabled', res)
return res
else:
return res == 'True'
else:
return r_serv_db.hget('d4:passivedns', 'enabled') == 'True'
def change_passive_dns_state(new_state):
old_state = is_passive_dns_enabled(cache=False)
if old_state != new_state:
r_serv_db.hset('d4:passivedns', 'enabled', bool(new_state))
r_cache.set('d4:passivedns:enabled', bool(new_state))
update_time = time.time()
r_serv_db.hset('d4:passivedns', 'update_time', update_time)
r_cache.set('d4:passivedns:last_update_time', update_time)
return True
return False
def get_config_last_update_time():
last_update_time = r_cache.get('d4:passivedns:last_update_time')
if not last_update_time:
last_update_time = r_serv_db.hget('d4:passivedns', 'update_time')
if not last_update_time:
last_update_time = 0
last_update_time = float(last_update_time)
r_cache.set('d4:passivedns:last_update_time', last_update_time)
return float(last_update_time)
def create_d4_client():
if is_passive_dns_enabled():
d4_client = d4_pyclient.D4Client(get_d4_client_config(), False)
return d4_client
else:
return None