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db_transfer.py
216 lines (201 loc) · 7.17 KB
/
db_transfer.py
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#!/usr/bin/python
# -*- coding: UTF-8 -*-
import logging
import sqlite3
import threading
import traceback
from server_pool import ServerPool
from shadowsocks import eventloop
db_instance = None
class TransferBase(object):
def __init__(self):
self.event = threading.Event()
self.last_update_transfer = {}
self.force_update_transfer = {}
self.pull_ok = False
def push_db_all_user(self):
if self.pull_ok is False:
return
current_transfer=ServerPool.get_instance().get_servers_transfer()
dt_transfer={}
for id in self.force_update_transfer:
if id in self.last_update_transfer:
if self.force_update_transfer[id][0]+self.force_update_transfer[id][1]>self.last_update_transfer[id][0]+self.last_update_transfer[id][1]:
dt_transfer[id]=[self.force_update_transfer[id][0]-self.last_update_transfer[id][0], self.force_update_transfer[id][1]-self.last_update_transfer[id][1]]
del self.last_update_transfer[id]
for id in current_transfer:
if id in self.force_update_transfer:
continue
if id in self.last_update_transfer:
if current_transfer[id][0]+current_transfer[id][1]-self.last_update_transfer[id][0]-self.last_update_transfer[id][1]<=0:
continue
dt_transfer[id]=[current_transfer[id][0]-self.last_update_transfer[id][0],current_transfer[id][1]-self.last_update_transfer[id][1]]
else:
if current_transfer[id][0]+current_transfer[id][1]<=0:
continue
dt_transfer[id]=[current_transfer[id][0],current_transfer[id][1]]
self.update_all_user(dt_transfer)
for id in dt_transfer:
if id not in self.force_update_transfer:
last=self.last_update_transfer.get(id,[0,0])
self.last_update_transfer[id]=[last[0]+dt_transfer[id][0],last[1]+dt_transfer[id][1]]
self.force_update_transfer={}
def del_server_out_of_bound_safe(self, rows):
cur_servers = {} #存放每次整理参数所有有效端口号
new_servers = {} #存放由于参数变更或新增的端口号
cur_running = ServerPool.get_instance().tcp_servers_pool
for row in rows:
if row['u'] + row['d'] >= row['quota']: #超流了
continue
port = row['port']
passwd = self.to_bytes(row['passwd'])
if hasattr(passwd, 'encode'):
passwd = passwd.encode('utf-8')
cfg = {'password': passwd}
read_config_keys = ['method', 'obfs', 'obfs_param', 'protocol', 'protocol_param', 'speed_limit_per_user']
for param_key in read_config_keys:
if param_key in row and row[param_key]:
cfg[param_key] = row[param_key]
else:
cfg[param_key] = ""
merge_config_keys = ['password'] + read_config_keys
for name in cfg.keys():
if hasattr(cfg[name], 'encode'):
try:
cfg[name] = cfg[name].encode('utf-8')
except Exception as e:
logging.warning('encode cfg key "%s" fail, val "%s"' %(name, cfg[name]))
if port not in cur_servers:
cur_servers[port] = passwd
else:
logging.error('端口冲突: [%s]' %(port))
continue
#处理参数变更和需要新增的服务端口
if port in cur_running:
port_running_param = ServerPool.get_instance().get_config(port)
for name in merge_config_keys:
if cfg[name] and port_running_param[name] and not self.cmp(cfg[name], port_running_param[name]):
self.force_update_transfer[port] = ServerPool.get_instance().get_server_transfer(port)
ServerPool.get_instance().cb_del_server(port)
new_servers[port] = (passwd, cfg)
break
else:
new_servers[port] = (passwd, cfg)
#关闭已失效的端口服务
for port in cur_running:
if port not in cur_servers:
self.force_update_transfer[port] = ServerPool.get_instance().get_server_transfer(port)
ServerPool.get_instance().cb_del_server(port)
if len(new_servers) > 0:
self.event.wait(eventloop.TIMEOUT_PRECISION + eventloop.TIMEOUT_PRECISION / 2)
for port in new_servers.keys():
passwd, cfg = new_servers[port]
self.new_server(port, passwd, cfg)
def new_server(self, port, passwd, cfg):
protocol = cfg.get('protocol', ServerPool.get_instance().config.get('protocol', 'origin'))
method = cfg.get('method', ServerPool.get_instance().config.get('method', 'None'))
obfs = cfg.get('obfs', ServerPool.get_instance().config.get('obfs', 'plain'))
logging.info('db start server at port [%s] pass [%s] protocol [%s] method [%s] obfs [%s]' % (port, passwd, protocol, method, obfs))
for hersh in cfg:
logging.info("%s:%s"%(hersh,cfg[hersh]))
ServerPool.get_instance().new_server(port, cfg)
def to_bytes(self, s):
if bytes != str:
if type(s) == str:
return s.encode('utf-8')
return s
def to_str(self, s):
if bytes != str:
if type(s) == bytes:
return s.decode('utf-8')
return s
def cmp(self, val1, val2):
if type(val1) is bytes:
val1 = self.to_str(val1)
if type(val2) is bytes:
val2 = self.to_str(val2)
return val1 == val2
@staticmethod
def del_servers():
for port in [v for v in ServerPool.get_instance().tcp_servers_pool.keys()]:
if ServerPool.get_instance().server_is_run(port) > 0:
ServerPool.get_instance().cb_del_server(port)
@staticmethod
def thread_db(obj):
global db_instance
db_instance = obj()
ServerPool.get_instance()
try:
while True:
try:
#保存端口流量记录
db_instance.push_db_all_user()
#读取所有端口参数
rows = db_instance.pull_db_all_user()
if rows:
db_instance.pull_ok = True
#①停止超流的服务,②重启配置更改的服务,③启动新增的服务
db_instance.del_server_out_of_bound_safe(rows)
except Exception as e:
trace = traceback.format_exc()
logging.error(trace)
if db_instance.event.wait(10) or not ServerPool.get_instance().thread.is_alive():
break
except KeyboardInterrupt as e:
pass
db_instance.del_servers()
ServerPool.get_instance().stop()
db_instance = None
@staticmethod
def thread_db_stop():
global db_instance
db_instance.event.set()
class SqliteTransfer(TransferBase):
'''
基本字段结构,表名(userlist):
u:上传流量,
d:下载流量,
quota:流量配额,
port:服务端口号,
passwd:服务密码,
method:加密方法,
protocol:协议方法,
protocol_param:协议参数,
obfs:混淆方法,
obfs_param:混淆方式,
speed_limit_per_user:端口限速,
'''
def __init__(self):
try:
db=sqlite3.connect('./userdb.dat',isolation_level=None)
db.row_factory=self.dict_factory
self.cursor=db.cursor()
except:
logging.error("连接数据库文件'./userdb.dat'失败!")
return
super(SqliteTransfer, self).__init__()
def dict_factory(self, cursor, row):
d = {}
for idx, col in enumerate(cursor.description):
d[col[0]] = row[idx]
return d
def update_all_user(self, dt_transfer):
'''保存所有流量增量'''
WHEN_SUB1=''
WHEN_SUB2=''
PORTS=None
for id in dt_transfer:
if PORTS is not None:
PORTS += ',%s' %id
else:
PORTS = '%s' %id
WHEN_SUB1 += ' WHEN %s THEN u+%s' %(id,dt_transfer[id][0])
WHEN_SUB2 += ' WHEN %s THEN d+%s' %(id,dt_transfer[id][1])
if len(dt_transfer)>0:
sql_str='UPDATE userlist SET u=CASE port'+WHEN_SUB1+' END,d=CASE port'+WHEN_SUB2+' END WHERE port IN ('+PORTS+')'
self.cursor.execute(sql_str)
return dt_transfer
def pull_db_all_user(self):
'''读取所有端口参数'''
rows=self.cursor.execute("select * from userlist").fetchall()
return rows