root / snf-pithos-backend / pithos / backends / lib / sqlite / public.py @ 7a65e284
History | View | Annotate | Download (4.2 kB)
1 |
# Copyright 2011-2012 GRNET S.A. All rights reserved.
|
---|---|
2 |
#
|
3 |
# Redistribution and use in source and binary forms, with or
|
4 |
# without modification, are permitted provided that the following
|
5 |
# conditions are met:
|
6 |
#
|
7 |
# 1. Redistributions of source code must retain the above
|
8 |
# copyright notice, this list of conditions and the following
|
9 |
# disclaimer.
|
10 |
#
|
11 |
# 2. Redistributions in binary form must reproduce the above
|
12 |
# copyright notice, this list of conditions and the following
|
13 |
# disclaimer in the documentation and/or other materials
|
14 |
# provided with the distribution.
|
15 |
#
|
16 |
# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
17 |
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
18 |
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
19 |
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
20 |
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
21 |
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
22 |
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
23 |
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
24 |
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
25 |
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
26 |
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
27 |
# POSSIBILITY OF SUCH DAMAGE.
|
28 |
#
|
29 |
# The views and conclusions contained in the software and
|
30 |
# documentation are those of the authors and should not be
|
31 |
# interpreted as representing official policies, either expressed
|
32 |
# or implied, of GRNET S.A.
|
33 |
|
34 |
from dbworker import DBWorker |
35 |
|
36 |
from pithos.backends.random_word import get_random_word |
37 |
|
38 |
import logging |
39 |
|
40 |
logger = logging.getLogger(__name__) |
41 |
|
42 |
class Public(DBWorker): |
43 |
"""Paths can be marked as public."""
|
44 |
|
45 |
def __init__(self, **params): |
46 |
DBWorker.__init__(self, **params)
|
47 |
execute = self.execute
|
48 |
|
49 |
execute(""" create table if not exists public
|
50 |
( public_id integer primary key autoincrement,
|
51 |
path text not null,
|
52 |
active boolean not null default 1,
|
53 |
url text) """)
|
54 |
execute(""" create unique index if not exists idx_public_path
|
55 |
on public(path) """)
|
56 |
execute(""" create unique index if not exists idx_public_url
|
57 |
on public(url) """)
|
58 |
|
59 |
def get_unique_url(self, public_url_security, public_url_alphabet): |
60 |
l = public_url_security |
61 |
while 1: |
62 |
candidate = get_random_word(length=l, alphabet=public_url_alphabet) |
63 |
if self.public_path(candidate) is None: |
64 |
return candidate
|
65 |
l +=1
|
66 |
|
67 |
def public_set(self, path, public_url_security, public_url_alphabet): |
68 |
q = "select public_id from public where path = ?"
|
69 |
self.execute(q, (path,))
|
70 |
row = self.fetchone()
|
71 |
|
72 |
if not row: |
73 |
url = self.get_unique_url(
|
74 |
public_url_security, public_url_alphabet |
75 |
) |
76 |
q = "insert into public(path, active, url) values(?, 1, ?)"
|
77 |
self.execute(q, (path, url))
|
78 |
if sqlite3_changes() != 0: |
79 |
logger.info('Public url set for path: %s' % path)
|
80 |
|
81 |
def public_unset(self, path): |
82 |
q = "delete from public where path = ?"
|
83 |
c = self.execute(q, (path,))
|
84 |
if c.rowcount != 0: |
85 |
logger.info('Public url unset for path: %s' % path)
|
86 |
|
87 |
def public_unset_bulk(self, paths): |
88 |
placeholders = ','.join('?' for path in paths) |
89 |
q = "delete from public where path in (%s)" % placeholders
|
90 |
self.execute(q, paths)
|
91 |
|
92 |
def public_get(self, path): |
93 |
q = "select url from public where path = ? and active = 1"
|
94 |
self.execute(q, (path,))
|
95 |
row = self.fetchone()
|
96 |
if row:
|
97 |
return row[0] |
98 |
return None |
99 |
|
100 |
def public_list(self, prefix): |
101 |
q = "select path, url from public where path like ? escape '\\' and active = 1"
|
102 |
self.execute(q, (self.escape_like(prefix) + '%',)) |
103 |
return self.fetchall() |
104 |
|
105 |
def public_path(self, public): |
106 |
q = "select path from public where url = ? and active = 1"
|
107 |
self.execute(q, (public,))
|
108 |
row = self.fetchone()
|
109 |
if row:
|
110 |
return row[0] |
111 |
return None |