root / snf-pithos-backend / pithos / backends / lib / sqlalchemy / groups.py @ dc7159be
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1 | 2e662088 | Antony Chazapis | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | 2715ade4 | 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 | 2715ade4 | 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 | 2715ade4 | 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 | 2715ade4 | 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 | 2715ade4 | 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 collections import defaultdict |
35 | 4f917833 | Sofia Papagiannaki | from sqlalchemy import Table, Column, String, MetaData |
36 | 4f917833 | Sofia Papagiannaki | from sqlalchemy.sql import select, and_ |
37 | 4f917833 | Sofia Papagiannaki | from sqlalchemy.schema import Index |
38 | 6a82f89f | Sofia Papagiannaki | from sqlalchemy.exc import NoSuchTableError |
39 | 6a82f89f | Sofia Papagiannaki | |
40 | 4f917833 | Sofia Papagiannaki | from dbworker import DBWorker |
41 | 4f917833 | Sofia Papagiannaki | |
42 | 2715ade4 | Sofia Papagiannaki | |
43 | 6a82f89f | Sofia Papagiannaki | def create_tables(engine): |
44 | 6a82f89f | Sofia Papagiannaki | metadata = MetaData() |
45 | 2715ade4 | Sofia Papagiannaki | columns = [] |
46 | 6a82f89f | Sofia Papagiannaki | columns.append(Column('owner', String(256), primary_key=True)) |
47 | 6a82f89f | Sofia Papagiannaki | columns.append(Column('name', String(256), primary_key=True)) |
48 | 6a82f89f | Sofia Papagiannaki | columns.append(Column('member', String(256), primary_key=True)) |
49 | 6a82f89f | Sofia Papagiannaki | groups = Table('groups', metadata, *columns, mysql_engine='InnoDB') |
50 | 2715ade4 | Sofia Papagiannaki | |
51 | 6a82f89f | Sofia Papagiannaki | # place an index on member
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52 | 6a82f89f | Sofia Papagiannaki | Index('idx_groups_member', groups.c.member)
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53 | 2715ade4 | Sofia Papagiannaki | |
54 | 6a82f89f | Sofia Papagiannaki | metadata.create_all(engine) |
55 | 6a82f89f | Sofia Papagiannaki | return metadata.sorted_tables
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56 | 2715ade4 | Sofia Papagiannaki | |
57 | 2715ade4 | Sofia Papagiannaki | |
58 | 4f917833 | Sofia Papagiannaki | class Groups(DBWorker): |
59 | 4f917833 | Sofia Papagiannaki | """Groups are named collections of members, belonging to an owner."""
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60 | 2715ade4 | Sofia Papagiannaki | |
61 | 4f917833 | Sofia Papagiannaki | def __init__(self, **params): |
62 | 4f917833 | Sofia Papagiannaki | DBWorker.__init__(self, **params)
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63 | 6a82f89f | Sofia Papagiannaki | try:
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64 | 6a82f89f | Sofia Papagiannaki | metadata = MetaData(self.engine)
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65 | 6a82f89f | Sofia Papagiannaki | self.groups = Table('groups', metadata, autoload=True) |
66 | 6a82f89f | Sofia Papagiannaki | except NoSuchTableError:
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67 | 6a82f89f | Sofia Papagiannaki | tables = create_tables(self.engine)
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68 | 6a82f89f | Sofia Papagiannaki | map(lambda t: self.__setattr__(t.name, t), tables) |
69 | 2715ade4 | Sofia Papagiannaki | |
70 | 4f917833 | Sofia Papagiannaki | def group_names(self, owner): |
71 | 4f917833 | Sofia Papagiannaki | """List all group names belonging to owner."""
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72 | 2715ade4 | Sofia Papagiannaki | |
73 | 4f917833 | Sofia Papagiannaki | s = select([self.groups.c.name],
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74 | 2715ade4 | Sofia Papagiannaki | self.groups.c.owner == owner).distinct()
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75 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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76 | 4f917833 | Sofia Papagiannaki | l = [row[0] for row in r.fetchall()] |
77 | 4f917833 | Sofia Papagiannaki | r.close() |
78 | 4f917833 | Sofia Papagiannaki | return l
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79 | 2715ade4 | Sofia Papagiannaki | |
80 | 4f917833 | Sofia Papagiannaki | def group_dict(self, owner): |
81 | 4f917833 | Sofia Papagiannaki | """Return a dict mapping group names to member lists for owner."""
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82 | 2715ade4 | Sofia Papagiannaki | |
83 | 4f917833 | Sofia Papagiannaki | s = select([self.groups.c.name, self.groups.c.member], |
84 | 2715ade4 | Sofia Papagiannaki | self.groups.c.owner == owner)
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85 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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86 | 4f917833 | Sofia Papagiannaki | d = defaultdict(list)
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87 | 4f917833 | Sofia Papagiannaki | for group, member in r.fetchall(): |
88 | 4f917833 | Sofia Papagiannaki | d[group].append(member) |
89 | 4f917833 | Sofia Papagiannaki | r.close() |
90 | 4f917833 | Sofia Papagiannaki | return d
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91 | 2715ade4 | Sofia Papagiannaki | |
92 | 4f917833 | Sofia Papagiannaki | def group_add(self, owner, group, member): |
93 | 4f917833 | Sofia Papagiannaki | """Add a member to a group."""
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94 | 2715ade4 | Sofia Papagiannaki | |
95 | 2ce96391 | Sofia Papagiannaki | s = self.groups.select()
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96 | 2ce96391 | Sofia Papagiannaki | s = s.where(self.groups.c.owner == owner)
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97 | 2ce96391 | Sofia Papagiannaki | s = s.where(self.groups.c.name == group)
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98 | 2ce96391 | Sofia Papagiannaki | s = s.where(self.groups.c.member == member)
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99 | 2ce96391 | Sofia Papagiannaki | r = self.conn.execute(s)
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100 | 2ce96391 | Sofia Papagiannaki | groups = r.fetchall() |
101 | 4f917833 | Sofia Papagiannaki | r.close() |
102 | 2715ade4 | Sofia Papagiannaki | if len(groups) == 0: |
103 | 2ce96391 | Sofia Papagiannaki | s = self.groups.insert()
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104 | 2ce96391 | Sofia Papagiannaki | r = self.conn.execute(s, owner=owner, name=group, member=member)
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105 | 2ce96391 | Sofia Papagiannaki | r.close() |
106 | 2715ade4 | Sofia Papagiannaki | |
107 | 4f917833 | Sofia Papagiannaki | def group_addmany(self, owner, group, members): |
108 | 4f917833 | Sofia Papagiannaki | """Add members to a group."""
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109 | 2715ade4 | Sofia Papagiannaki | |
110 | b045ca90 | Sofia Papagiannaki | ins = self.groups.insert()
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111 | b045ca90 | Sofia Papagiannaki | values = list({'owner': owner, |
112 | b045ca90 | Sofia Papagiannaki | 'name': group,
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113 | b045ca90 | Sofia Papagiannaki | 'member': m} for m in members) |
114 | b045ca90 | Sofia Papagiannaki | self.conn.execute(ins, values)
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115 | 2715ade4 | Sofia Papagiannaki | |
116 | 4f917833 | Sofia Papagiannaki | def group_remove(self, owner, group, member): |
117 | 4f917833 | Sofia Papagiannaki | """Remove a member from a group."""
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118 | 2715ade4 | Sofia Papagiannaki | |
119 | 2715ade4 | Sofia Papagiannaki | s = self.groups.delete().where(and_(self.groups.c.owner == owner, |
120 | 2715ade4 | Sofia Papagiannaki | self.groups.c.name == group,
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121 | 2715ade4 | Sofia Papagiannaki | self.groups.c.member == member))
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122 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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123 | 4f917833 | Sofia Papagiannaki | r.close() |
124 | 2715ade4 | Sofia Papagiannaki | |
125 | 4f917833 | Sofia Papagiannaki | def group_delete(self, owner, group): |
126 | 4f917833 | Sofia Papagiannaki | """Delete a group."""
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127 | 2715ade4 | Sofia Papagiannaki | |
128 | 2715ade4 | Sofia Papagiannaki | s = self.groups.delete().where(and_(self.groups.c.owner == owner, |
129 | 2715ade4 | Sofia Papagiannaki | self.groups.c.name == group))
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130 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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131 | 4f917833 | Sofia Papagiannaki | r.close() |
132 | 2715ade4 | Sofia Papagiannaki | |
133 | 4f917833 | Sofia Papagiannaki | def group_destroy(self, owner): |
134 | 4f917833 | Sofia Papagiannaki | """Delete all groups belonging to owner."""
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135 | 2715ade4 | Sofia Papagiannaki | |
136 | 2715ade4 | Sofia Papagiannaki | s = self.groups.delete().where(self.groups.c.owner == owner) |
137 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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138 | 4f917833 | Sofia Papagiannaki | r.close() |
139 | 2715ade4 | Sofia Papagiannaki | |
140 | 4f917833 | Sofia Papagiannaki | def group_members(self, owner, group): |
141 | 4f917833 | Sofia Papagiannaki | """Return the list of members of a group."""
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142 | 2715ade4 | Sofia Papagiannaki | |
143 | 2715ade4 | Sofia Papagiannaki | s = select([self.groups.c.member], and_(self.groups.c.owner == owner, |
144 | 2715ade4 | Sofia Papagiannaki | self.groups.c.name == group))
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145 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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146 | 4f917833 | Sofia Papagiannaki | l = [row[0] for row in r.fetchall()] |
147 | 4f917833 | Sofia Papagiannaki | r.close() |
148 | 4f917833 | Sofia Papagiannaki | return l
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149 | 2715ade4 | Sofia Papagiannaki | |
150 | 4f917833 | Sofia Papagiannaki | def group_check(self, owner, group, member): |
151 | 4f917833 | Sofia Papagiannaki | """Check if a member is in a group."""
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152 | 2715ade4 | Sofia Papagiannaki | |
153 | 29148653 | Sofia Papagiannaki | s = select([self.groups.c.member],
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154 | 29148653 | Sofia Papagiannaki | and_(self.groups.c.owner == owner,
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155 | 29148653 | Sofia Papagiannaki | self.groups.c.name == group,
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156 | 29148653 | Sofia Papagiannaki | self.groups.c.member == member))
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157 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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158 | 4f917833 | Sofia Papagiannaki | l = r.fetchone() |
159 | 4f917833 | Sofia Papagiannaki | r.close() |
160 | 4f917833 | Sofia Papagiannaki | return bool(l) |
161 | 2715ade4 | Sofia Papagiannaki | |
162 | 4f917833 | Sofia Papagiannaki | def group_parents(self, member): |
163 | 4f917833 | Sofia Papagiannaki | """Return all (owner, group) tuples that contain member."""
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164 | 2715ade4 | Sofia Papagiannaki | |
165 | 4f917833 | Sofia Papagiannaki | s = select([self.groups.c.owner, self.groups.c.name], |
166 | 2715ade4 | Sofia Papagiannaki | self.groups.c.member == member)
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167 | 4f917833 | Sofia Papagiannaki | r = self.conn.execute(s)
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168 | 4f917833 | Sofia Papagiannaki | l = r.fetchall() |
169 | 4f917833 | Sofia Papagiannaki | r.close() |
170 | 4f917833 | Sofia Papagiannaki | return l |