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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
# Copyright 2010-2013 Kolab Systems AG (http://www.kolabsys.com)
#
# Jeroen van Meeuwen (Kolab Systems) <vanmeeuwen a kolabsys.com>
#
# 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/>.
#
import datetime
from uuid import UUID
import sqlalchemy
from sqlalchemy import Column
from sqlalchemy import DateTime
from sqlalchemy import Integer
from sqlalchemy import MetaData
from sqlalchemy import String
from sqlalchemy import desc
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
import pykolab
from pykolab.constants import KOLAB_LIB_PATH
from pykolab.translate import _
# pylint: disable=invalid-name
conf = pykolab.getConf()
log = pykolab.getLogger('pykolab.cache')
metadata = MetaData()
db = {}
#
# Classes
#
DeclarativeBase = declarative_base()
# pylint: disable=too-few-public-methods
class Entry(DeclarativeBase):
__tablename__ = 'entries'
last_change = None
id = Column(Integer, primary_key=True)
uniqueid = Column(String(128), nullable=False)
result_attribute = Column(String(128), nullable=False)
last_change = Column(DateTime, nullable=False, default=datetime.datetime.now())
def __init__(self, uniqueid, result_attr, last_change):
self.uniqueid = uniqueid
self.result_attribute = result_attr
modifytimestamp_format = conf.get_raw(
'ldap',
'modifytimestamp_format',
default="%Y%m%d%H%M%SZ"
).replace('%%', '%')
self.last_change = datetime.datetime.strptime(
last_change,
modifytimestamp_format
)
#
# Functions
#
def delete_entry(domain, entry):
_db = init_db(domain)
_entry = _db.query(Entry).filter_by(uniqueid=entry['id']).first()
if _entry is not None:
_db.delete(_entry)
_db.commit()
def get_entry(domain, entry, update=True):
result_attribute = conf.get_raw('cyrus-sasl', 'result_attribute')
_entry = None
_db = init_db(domain)
try:
_uniqueid = str(UUID(bytes_le=entry['id']))
log.debug(
_("Entry uniqueid was converted from binary form to string: %s") % _uniqueid,
level=8
)
except ValueError:
_uniqueid = entry['id']
try:
_entry = _db.query(Entry).filter_by(uniqueid=_uniqueid).first()
except sqlalchemy.exc.OperationalError:
_db = init_db(domain, reinit=True)
except sqlalchemy.exc.InvalidRequestError:
_db = init_db(domain, reinit=True)
finally:
_entry = _db.query(Entry).filter_by(uniqueid=_uniqueid).first()
if not update:
return _entry
if _entry is None:
log.debug(_("Inserting cache entry %r") % (_uniqueid), level=8)
if result_attribute not in entry:
entry[result_attribute] = ''
_db.add(Entry(_uniqueid, entry[result_attribute], entry['modifytimestamp']))
_db.commit()
_entry = _db.query(Entry).filter_by(uniqueid=_uniqueid).first()
else:
modifytimestamp_format = conf.get_raw(
'ldap',
'modifytimestamp_format',
default="%Y%m%d%H%M%SZ"
).replace('%%', '%')
if not _entry.last_change.strftime(modifytimestamp_format) == entry['modifytimestamp']:
log.debug(_("Updating timestamp for cache entry %r") % (_uniqueid), level=8)
last_change = datetime.datetime.strptime(
entry['modifytimestamp'],
modifytimestamp_format
)
_entry.last_change = last_change
_db.commit()
_entry = _db.query(Entry).filter_by(uniqueid=_uniqueid).first()
if result_attribute in entry:
if not _entry.result_attribute == entry[result_attribute]:
log.debug(_("Updating result_attribute for cache entry %r") % (_uniqueid), level=8)
_entry.result_attribute = entry[result_attribute]
_db.commit()
_entry = _db.query(Entry).filter_by(uniqueid=_uniqueid).first()
return _entry
def init_db(domain, reinit=False):
"""
Returns a SQLAlchemy Session() instance.
"""
# pylint: disable=global-statement
global db
if domain in db and not reinit:
return db[domain]
if reinit:
import os
if os.path.isfile('sqlite:///%s/%s.db' % (KOLAB_LIB_PATH, domain)):
os.unlink('sqlite:///%s/%s.db' % (KOLAB_LIB_PATH, domain))
db_uri = 'sqlite:///%s/%s.db' % (KOLAB_LIB_PATH, domain)
echo = conf.debuglevel > 8
try:
engine = create_engine(db_uri, echo=echo)
DeclarativeBase.metadata.create_all(engine)
except Exception:
engine = create_engine('sqlite://')
DeclarativeBase.metadata.create_all(engine)
metadata.create_all(engine)
Session = sessionmaker(bind=engine)
db[domain] = Session()
return db[domain]
def last_modify_timestamp(domain):
modifytimestamp_format = conf.get_raw(
'ldap',
'modifytimestamp_format',
"%Y%m%d%H%M%SZ"
).replace('%%', '%')
try:
_db = init_db(domain)
last_change = _db.query(Entry).order_by(desc(Entry.last_change)).first()
if last_change is not None:
return last_change.last_change.strftime(modifytimestamp_format)
return datetime.datetime(1900, 1, 1, 00, 00, 00).strftime(modifytimestamp_format)
except Exception:
return datetime.datetime(1900, 1, 1, 00, 00, 00).strftime(modifytimestamp_format)
|
