root / snf-pithos-backend / pithos / backends / lib / sqlalchemy / public.py @ ca7812eb
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1 | 2e662088 | Antony Chazapis | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | 4f917833 | Sofia Papagiannaki | #
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3 | 4f917833 | Sofia Papagiannaki | # Redistribution and use in source and binary forms, with or
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4 | 4f917833 | Sofia Papagiannaki | # without modification, are permitted provided that the following
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5 | 4f917833 | Sofia Papagiannaki | # conditions are met:
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6 | 4f917833 | Sofia Papagiannaki | #
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7 | 4f917833 | Sofia Papagiannaki | # 1. Redistributions of source code must retain the above
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8 | 4f917833 | Sofia Papagiannaki | # copyright notice, this list of conditions and the following
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9 | 4f917833 | Sofia Papagiannaki | # disclaimer.
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10 | 4f917833 | Sofia Papagiannaki | #
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11 | 4f917833 | Sofia Papagiannaki | # 2. Redistributions in binary form must reproduce the above
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12 | 4f917833 | Sofia Papagiannaki | # copyright notice, this list of conditions and the following
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13 | 4f917833 | Sofia Papagiannaki | # disclaimer in the documentation and/or other materials
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14 | 4f917833 | Sofia Papagiannaki | # provided with the distribution.
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15 | 4f917833 | Sofia Papagiannaki | #
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16 | 4f917833 | Sofia Papagiannaki | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 4f917833 | Sofia Papagiannaki | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 4f917833 | Sofia Papagiannaki | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 4f917833 | Sofia Papagiannaki | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 4f917833 | Sofia Papagiannaki | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 4f917833 | Sofia Papagiannaki | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 4f917833 | Sofia Papagiannaki | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 4f917833 | Sofia Papagiannaki | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 4f917833 | Sofia Papagiannaki | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 4f917833 | Sofia Papagiannaki | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 4f917833 | Sofia Papagiannaki | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 4f917833 | Sofia Papagiannaki | # POSSIBILITY OF SUCH DAMAGE.
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28 | 4f917833 | Sofia Papagiannaki | #
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29 | 4f917833 | Sofia Papagiannaki | # The views and conclusions contained in the software and
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30 | 4f917833 | Sofia Papagiannaki | # documentation are those of the authors and should not be
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31 | 4f917833 | Sofia Papagiannaki | # interpreted as representing official policies, either expressed
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32 | 4f917833 | Sofia Papagiannaki | # or implied, of GRNET S.A.
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33 | 4f917833 | Sofia Papagiannaki | |
34 | 4f917833 | Sofia Papagiannaki | from dbworker import DBWorker |
35 | af75e8a5 | Antony Chazapis | from sqlalchemy import Table, Column, String, Integer, Boolean, MetaData |
36 | af75e8a5 | Antony Chazapis | from sqlalchemy.sql import and_, select |
37 | bb4eafc6 | Antony Chazapis | from sqlalchemy.schema import Index |
38 | 6a82f89f | Sofia Papagiannaki | from sqlalchemy.exc import NoSuchTableError |
39 | bb4eafc6 | Antony Chazapis | |
40 | 6a82f89f | Sofia Papagiannaki | def create_tables(engine): |
41 | 6a82f89f | Sofia Papagiannaki | metadata = MetaData() |
42 | 6a82f89f | Sofia Papagiannaki | columns=[] |
43 | 6a82f89f | Sofia Papagiannaki | columns.append(Column('public_id', Integer, primary_key=True)) |
44 | 6a82f89f | Sofia Papagiannaki | columns.append(Column('path', String(2048), nullable=False)) |
45 | 6a82f89f | Sofia Papagiannaki | columns.append(Column('active', Boolean, nullable=False, default=True)) |
46 | 6a82f89f | Sofia Papagiannaki | public = Table('public', metadata, *columns, mysql_engine='InnoDB', sqlite_autoincrement=True) |
47 | 6a82f89f | Sofia Papagiannaki | # place an index on path
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48 | 6a82f89f | Sofia Papagiannaki | Index('idx_public_path', public.c.path, unique=True) |
49 | 6a82f89f | Sofia Papagiannaki | metadata.create_all(engine) |
50 | 6a82f89f | Sofia Papagiannaki | return metadata.sorted_tables
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51 | 4f917833 | Sofia Papagiannaki | |
52 | 4f917833 | Sofia Papagiannaki | class Public(DBWorker): |
53 | 4f917833 | Sofia Papagiannaki | """Paths can be marked as public."""
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54 | 4f917833 | Sofia Papagiannaki | |
55 | 4f917833 | Sofia Papagiannaki | def __init__(self, **params): |
56 | 4f917833 | Sofia Papagiannaki | DBWorker.__init__(self, **params)
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57 | 6a82f89f | Sofia Papagiannaki | try:
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58 | 6a82f89f | Sofia Papagiannaki | metadata = MetaData(self.engine)
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59 | 6a82f89f | Sofia Papagiannaki | self.public = Table('public', metadata, autoload=True) |
60 | 6a82f89f | Sofia Papagiannaki | except NoSuchTableError:
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61 | 6a82f89f | Sofia Papagiannaki | tables = create_tables(self.engine)
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62 | 6a82f89f | Sofia Papagiannaki | map(lambda t: self.__setattr__(t.name, t), tables) |
63 | 4f917833 | Sofia Papagiannaki | |
64 | 4f917833 | Sofia Papagiannaki | def public_set(self, path): |
65 | af75e8a5 | Antony Chazapis | s = select([self.public.c.public_id])
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66 | a68d51a4 | Sofia Papagiannaki | s = s.where(self.public.c.path == path)
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67 | 2ce96391 | Sofia Papagiannaki | r = self.conn.execute(s)
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68 | af75e8a5 | Antony Chazapis | row = r.fetchone() |
69 | 4f917833 | Sofia Papagiannaki | r.close() |
70 | af75e8a5 | Antony Chazapis | if row:
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71 | af75e8a5 | Antony Chazapis | s = self.public.update().where(self.public.c.public_id == row[0]) |
72 | af75e8a5 | Antony Chazapis | s = s.values(active=True)
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73 | af75e8a5 | Antony Chazapis | else:
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74 | 2ce96391 | Sofia Papagiannaki | s = self.public.insert()
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75 | af75e8a5 | Antony Chazapis | s = s.values(path=path, active=True)
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76 | af75e8a5 | Antony Chazapis | r = self.conn.execute(s)
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77 | af75e8a5 | Antony Chazapis | r.close() |
78 | 4f917833 | Sofia Papagiannaki | |
79 | 4f917833 | Sofia Papagiannaki | def public_unset(self, path): |
80 | af75e8a5 | Antony Chazapis | s = self.public.update()
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81 | af75e8a5 | Antony Chazapis | s = s.where(self.public.c.path == path)
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82 | af75e8a5 | Antony Chazapis | s = s.values(active=False)
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83 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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84 | 4f917833 | Sofia Papagiannaki | r.close() |
85 | 8221c89d | Sofia Papagiannaki | |
86 | 8221c89d | Sofia Papagiannaki | def public_unset_bulk(self, paths): |
87 | 8221c89d | Sofia Papagiannaki | s = self.public.update()
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88 | 8221c89d | Sofia Papagiannaki | s = s.where(self.public.c.path.in_(paths))
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89 | 8221c89d | Sofia Papagiannaki | s = s.values(active=False)
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90 | 8221c89d | Sofia Papagiannaki | r = self.conn.execute(s)
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91 | 8221c89d | Sofia Papagiannaki | r.close() |
92 | 4f917833 | Sofia Papagiannaki | |
93 | bb4eafc6 | Antony Chazapis | def public_get(self, path): |
94 | af75e8a5 | Antony Chazapis | s = select([self.public.c.public_id])
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95 | af75e8a5 | Antony Chazapis | s = s.where(and_(self.public.c.path == path,
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96 | 4732ed31 | Antony Chazapis | self.public.c.active == True)) |
97 | bb4eafc6 | Antony Chazapis | r = self.conn.execute(s)
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98 | bb4eafc6 | Antony Chazapis | row = r.fetchone() |
99 | bb4eafc6 | Antony Chazapis | r.close() |
100 | bb4eafc6 | Antony Chazapis | if row:
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101 | bb4eafc6 | Antony Chazapis | return row[0] |
102 | bb4eafc6 | Antony Chazapis | return None |
103 | bb4eafc6 | Antony Chazapis | |
104 | 15a96c3e | Antony Chazapis | def public_list(self, prefix): |
105 | 15a96c3e | Antony Chazapis | s = select([self.public.c.path, self.public.c.public_id]) |
106 | 7baa2773 | Antony Chazapis | s = s.where(self.public.c.path.like(self.escape_like(prefix) + '%', escape='\\')) |
107 | 15a96c3e | Antony Chazapis | s = s.where(self.public.c.active == True) |
108 | 15a96c3e | Antony Chazapis | r = self.conn.execute(s)
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109 | 15a96c3e | Antony Chazapis | rows = r.fetchall() |
110 | 15a96c3e | Antony Chazapis | r.close() |
111 | 15a96c3e | Antony Chazapis | return rows
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112 | 15a96c3e | Antony Chazapis | |
113 | bb4eafc6 | Antony Chazapis | def public_path(self, public): |
114 | af75e8a5 | Antony Chazapis | s = select([self.public.c.path])
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115 | af75e8a5 | Antony Chazapis | s = s.where(and_(self.public.c.public_id == public,
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116 | 4732ed31 | Antony Chazapis | self.public.c.active == True)) |
117 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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118 | bb4eafc6 | Antony Chazapis | row = r.fetchone() |
119 | 4f917833 | Sofia Papagiannaki | r.close() |
120 | bb4eafc6 | Antony Chazapis | if row:
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121 | bb4eafc6 | Antony Chazapis | return row[0] |
122 | bb4eafc6 | Antony Chazapis | return None |