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
|
# Copyright 2011 Canonical Ltd.
#
# This file is part of u1db.
#
# u1db is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# u1db 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with u1db. If not, see <http://www.gnu.org/licenses/>.
"""State for servers exposing a set of U1DB databases."""
import os
import errno
class ServerState(object):
"""Passed to a Request when it is instantiated.
This is used to track server-side state, such as working-directory, open
databases, etc.
"""
def __init__(self):
self._workingdir = None
def set_workingdir(self, path):
self._workingdir = path
def _relpath(self, relpath):
# Note: We don't want to allow absolute paths here, because we
# don't want to expose the filesystem. We should also check that
# relpath doesn't have '..' in it, etc.
return self._workingdir + '/' + relpath
def open_database(self, path):
"""Open a database at the given location."""
from u1db.backends import sqlite_backend
full_path = self._relpath(path)
return sqlite_backend.SQLiteDatabase.open_database(full_path,
create=False)
def check_database(self, path):
"""Check if the database at the given location exists.
Simply returns if it does or raises DatabaseDoesNotExist.
"""
db = self.open_database(path)
db.close()
def ensure_database(self, path):
"""Ensure database at the given location."""
from u1db.backends import sqlite_backend
full_path = self._relpath(path)
db = sqlite_backend.SQLiteDatabase.open_database(full_path,
create=True)
return db, db._replica_uid
def delete_database(self, path):
"""Delete database at the given location."""
from u1db.backends import sqlite_backend
full_path = self._relpath(path)
sqlite_backend.SQLiteDatabase.delete_database(full_path)
|
