1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
# -*- coding: utf-8 -*-
# adbapi.py
# Copyright (C) 2013, 2014 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
An asyncrhonous interface to soledad using sqlcipher backend.
It uses twisted.enterprise.adbapi.
"""
import re
import os
import sys
from functools import partial
from twisted.enterprise import adbapi
from twisted.python import log
from zope.proxy import ProxyBase, setProxiedObject
from leap.soledad.client import sqlcipher as soledad_sqlcipher
DEBUG_SQL = os.environ.get("LEAP_DEBUG_SQL")
if DEBUG_SQL:
log.startLogging(sys.stdout)
def getConnectionPool(opts, openfun=None, driver="pysqlcipher"):
if openfun is None and driver == "pysqlcipher":
openfun = partial(soledad_sqlcipher.set_init_pragmas, opts=opts)
return U1DBConnectionPool(
"%s.dbapi2" % driver, database=opts.path,
check_same_thread=False, cp_openfun=openfun)
class U1DBConnection(adbapi.Connection):
u1db_wrapper = soledad_sqlcipher.SoledadSQLCipherWrapper
def __init__(self, pool, init_u1db=False):
self.init_u1db = init_u1db
adbapi.Connection.__init__(self, pool)
def reconnect(self):
if self._connection is not None:
self._pool.disconnect(self._connection)
self._connection = self._pool.connect()
if self.init_u1db:
self._u1db = self.u1db_wrapper(self._connection)
def __getattr__(self, name):
if name.startswith('u1db_'):
meth = re.sub('^u1db_', '', name)
return getattr(self._u1db, meth)
else:
return getattr(self._connection, name)
class U1DBTransaction(adbapi.Transaction):
def __getattr__(self, name):
if name.startswith('u1db_'):
meth = re.sub('^u1db_', '', name)
return getattr(self._connection._u1db, meth)
else:
return getattr(self._cursor, name)
class U1DBConnectionPool(adbapi.ConnectionPool):
connectionFactory = U1DBConnection
transactionFactory = U1DBTransaction
def __init__(self, *args, **kwargs):
adbapi.ConnectionPool.__init__(self, *args, **kwargs)
# all u1db connections, hashed by thread-id
self._u1dbconnections = {}
# The replica uid, primed by the connections on init.
self.replica_uid = ProxyBase(None)
def runU1DBQuery(self, meth, *args, **kw):
meth = "u1db_%s" % meth
return self.runInteraction(self._runU1DBQuery, meth, *args, **kw)
def _runU1DBQuery(self, trans, meth, *args, **kw):
meth = getattr(trans, meth)
return meth(*args, **kw)
def _runInteraction(self, interaction, *args, **kw):
tid = self.threadID()
u1db = self._u1dbconnections.get(tid)
conn = self.connectionFactory(self, init_u1db=not bool(u1db))
if self.replica_uid is None:
replica_uid = conn._u1db._real_replica_uid
setProxiedObject(self.replica_uid, replica_uid)
print "GOT REPLICA UID IN DBPOOL", self.replica_uid
if u1db is None:
self._u1dbconnections[tid] = conn._u1db
else:
conn._u1db = u1db
trans = self.transactionFactory(self, conn)
try:
result = interaction(trans, *args, **kw)
trans.close()
conn.commit()
return result
except:
excType, excValue, excTraceback = sys.exc_info()
try:
conn.rollback()
except:
log.err(None, "Rollback failed")
raise excType, excValue, excTraceback
def finalClose(self):
self.shutdownID = None
self.threadpool.stop()
self.running = False
for conn in self.connections.values():
self._close(conn)
for u1db in self._u1dbconnections.values():
self._close(u1db)
self.connections.clear()
|