root / pithos / backends / lib / policy.py @ 0f9d752c
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1 | 0f9d752c | Antony Chazapis | # Copyright 2011 GRNET S.A. All rights reserved.
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2 | 0f9d752c | Antony Chazapis | #
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3 | 0f9d752c | Antony Chazapis | # Redistribution and use in source and binary forms, with or
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4 | 0f9d752c | Antony Chazapis | # without modification, are permitted provided that the following
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5 | 0f9d752c | Antony Chazapis | # conditions are met:
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6 | 0f9d752c | Antony Chazapis | #
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7 | 0f9d752c | Antony Chazapis | # 1. Redistributions of source code must retain the above
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8 | 0f9d752c | Antony Chazapis | # copyright notice, this list of conditions and the following
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9 | 0f9d752c | Antony Chazapis | # disclaimer.
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10 | 0f9d752c | Antony Chazapis | #
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11 | 0f9d752c | Antony Chazapis | # 2. Redistributions in binary form must reproduce the above
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12 | 0f9d752c | Antony Chazapis | # copyright notice, this list of conditions and the following
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13 | 0f9d752c | Antony Chazapis | # disclaimer in the documentation and/or other materials
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14 | 0f9d752c | Antony Chazapis | # provided with the distribution.
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15 | 0f9d752c | Antony Chazapis | #
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16 | 0f9d752c | Antony Chazapis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 0f9d752c | Antony Chazapis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 0f9d752c | Antony Chazapis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 0f9d752c | Antony Chazapis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 0f9d752c | Antony Chazapis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 0f9d752c | Antony Chazapis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 0f9d752c | Antony Chazapis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 0f9d752c | Antony Chazapis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 0f9d752c | Antony Chazapis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 0f9d752c | Antony Chazapis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 0f9d752c | Antony Chazapis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 0f9d752c | Antony Chazapis | # POSSIBILITY OF SUCH DAMAGE.
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28 | 0f9d752c | Antony Chazapis | #
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29 | 0f9d752c | Antony Chazapis | # The views and conclusions contained in the software and
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30 | 0f9d752c | Antony Chazapis | # documentation are those of the authors and should not be
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31 | 0f9d752c | Antony Chazapis | # interpreted as representing official policies, either expressed
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32 | 0f9d752c | Antony Chazapis | # or implied, of GRNET S.A.
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33 | 0f9d752c | Antony Chazapis | |
34 | 0f9d752c | Antony Chazapis | from dbworker import DBWorker |
35 | 0f9d752c | Antony Chazapis | |
36 | 0f9d752c | Antony Chazapis | |
37 | 0f9d752c | Antony Chazapis | class Policy(DBWorker): |
38 | 0f9d752c | Antony Chazapis | """Paths can be assigned key, value pairs, representing policy."""
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39 | 0f9d752c | Antony Chazapis | |
40 | 0f9d752c | Antony Chazapis | def __init__(self, **params): |
41 | 0f9d752c | Antony Chazapis | DBWorker.__init__(self, **params)
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42 | 0f9d752c | Antony Chazapis | execute = self.execute
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43 | 0f9d752c | Antony Chazapis | |
44 | 0f9d752c | Antony Chazapis | execute(""" create table if not exists policy
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45 | 0f9d752c | Antony Chazapis | ( path text,
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46 | 0f9d752c | Antony Chazapis | key text,
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47 | 0f9d752c | Antony Chazapis | value text,
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48 | 0f9d752c | Antony Chazapis | primary key (path, key) ) """)
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49 | 0f9d752c | Antony Chazapis | |
50 | 0f9d752c | Antony Chazapis | def policy_set(self, path, policy): |
51 | 0f9d752c | Antony Chazapis | q = "insert or replace into policy (path, key, value) values (?, ?, ?)"
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52 | 0f9d752c | Antony Chazapis | self.executemany(q, ((path, k, v) for k, v in policy.iteritems())) |
53 | 0f9d752c | Antony Chazapis | |
54 | 0f9d752c | Antony Chazapis | def policy_unset(self, path): |
55 | 0f9d752c | Antony Chazapis | q = "delete from policy where path = ?"
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56 | 0f9d752c | Antony Chazapis | self.execute(q, (path,))
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57 | 0f9d752c | Antony Chazapis | |
58 | 0f9d752c | Antony Chazapis | def policy_get(self, path): |
59 | 0f9d752c | Antony Chazapis | q = "select key, value from policy where path = ?"
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60 | 0f9d752c | Antony Chazapis | self.execute(q, (path,))
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61 | 0f9d752c | Antony Chazapis | return dict(self.fetchall()) |