root / snf-pithos-backend / pithos / backends / lib / sqlite / node.py @ cb787cc4
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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 | 1f2d1b42 | Antony Chazapis | # Redistribution and use in source and binary forms, with or
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4 | 1f2d1b42 | Antony Chazapis | # without modification, are permitted provided that the following
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5 | 1f2d1b42 | Antony Chazapis | # conditions are met:
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6 | 2715ade4 | Sofia Papagiannaki | #
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7 | 1f2d1b42 | Antony Chazapis | # 1. Redistributions of source code must retain the above
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8 | 1f2d1b42 | Antony Chazapis | # copyright notice, this list of conditions and the following
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9 | 1f2d1b42 | Antony Chazapis | # disclaimer.
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10 | 2715ade4 | Sofia Papagiannaki | #
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11 | 1f2d1b42 | Antony Chazapis | # 2. Redistributions in binary form must reproduce the above
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12 | 1f2d1b42 | Antony Chazapis | # copyright notice, this list of conditions and the following
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13 | 1f2d1b42 | Antony Chazapis | # disclaimer in the documentation and/or other materials
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14 | 1f2d1b42 | Antony Chazapis | # provided with the distribution.
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15 | 2715ade4 | Sofia Papagiannaki | #
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16 | 1f2d1b42 | Antony Chazapis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 1f2d1b42 | Antony Chazapis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 1f2d1b42 | Antony Chazapis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 1f2d1b42 | Antony Chazapis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 1f2d1b42 | Antony Chazapis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 1f2d1b42 | Antony Chazapis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 1f2d1b42 | Antony Chazapis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 1f2d1b42 | Antony Chazapis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 1f2d1b42 | Antony Chazapis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 1f2d1b42 | Antony Chazapis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 1f2d1b42 | Antony Chazapis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 1f2d1b42 | Antony Chazapis | # POSSIBILITY OF SUCH DAMAGE.
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28 | 2715ade4 | Sofia Papagiannaki | #
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29 | 1f2d1b42 | Antony Chazapis | # The views and conclusions contained in the software and
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30 | 1f2d1b42 | Antony Chazapis | # documentation are those of the authors and should not be
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31 | 1f2d1b42 | Antony Chazapis | # interpreted as representing official policies, either expressed
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32 | 1f2d1b42 | Antony Chazapis | # or implied, of GRNET S.A.
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33 | 1f2d1b42 | Antony Chazapis | |
34 | 1f2d1b42 | Antony Chazapis | from time import time |
35 | 1f2d1b42 | Antony Chazapis | |
36 | 1f2d1b42 | Antony Chazapis | from dbworker import DBWorker |
37 | 1f2d1b42 | Antony Chazapis | |
38 | 6e147ecc | Antony Chazapis | from pithos.backends.filter import parse_filters |
39 | 1713c946 | Antony Chazapis | |
40 | 1f2d1b42 | Antony Chazapis | |
41 | 2715ade4 | Sofia Papagiannaki | ROOTNODE = 0
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42 | 1f2d1b42 | Antony Chazapis | |
43 | 2715ade4 | Sofia Papagiannaki | (SERIAL, NODE, HASH, SIZE, TYPE, SOURCE, MTIME, MUSER, UUID, CHECKSUM, |
44 | 2715ade4 | Sofia Papagiannaki | CLUSTER) = range(11) |
45 | 1f2d1b42 | Antony Chazapis | |
46 | 2715ade4 | Sofia Papagiannaki | (MATCH_PREFIX, MATCH_EXACT) = range(2) |
47 | 1f2d1b42 | Antony Chazapis | |
48 | 1f2d1b42 | Antony Chazapis | inf = float('inf') |
49 | 1f2d1b42 | Antony Chazapis | |
50 | 1f2d1b42 | Antony Chazapis | |
51 | 1f2d1b42 | Antony Chazapis | def strnextling(prefix): |
52 | 60b8a083 | Antony Chazapis | """Return the first unicode string
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53 | 1f2d1b42 | Antony Chazapis | greater than but not starting with given prefix.
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54 | 1f2d1b42 | Antony Chazapis | strnextling('hello') -> 'hellp'
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55 | 1f2d1b42 | Antony Chazapis | """
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56 | 1f2d1b42 | Antony Chazapis | if not prefix: |
57 | 1f2d1b42 | Antony Chazapis | ## all strings start with the null string,
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58 | 1f2d1b42 | Antony Chazapis | ## therefore we have to approximate strnextling('')
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59 | 1f2d1b42 | Antony Chazapis | ## with the last unicode character supported by python
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60 | 1f2d1b42 | Antony Chazapis | ## 0x10ffff for wide (32-bit unicode) python builds
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61 | 1f2d1b42 | Antony Chazapis | ## 0x00ffff for narrow (16-bit unicode) python builds
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62 | 1f2d1b42 | Antony Chazapis | ## We will not autodetect. 0xffff is safe enough.
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63 | 1f2d1b42 | Antony Chazapis | return unichr(0xffff) |
64 | 1f2d1b42 | Antony Chazapis | s = prefix[:-1]
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65 | 1f2d1b42 | Antony Chazapis | c = ord(prefix[-1]) |
66 | 1f2d1b42 | Antony Chazapis | if c >= 0xffff: |
67 | 1f2d1b42 | Antony Chazapis | raise RuntimeError |
68 | 2715ade4 | Sofia Papagiannaki | s += unichr(c + 1) |
69 | 1f2d1b42 | Antony Chazapis | return s
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70 | 1f2d1b42 | Antony Chazapis | |
71 | 2715ade4 | Sofia Papagiannaki | |
72 | 1f2d1b42 | Antony Chazapis | def strprevling(prefix): |
73 | 60b8a083 | Antony Chazapis | """Return an approximation of the last unicode string
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74 | 1f2d1b42 | Antony Chazapis | less than but not starting with given prefix.
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75 | 1f2d1b42 | Antony Chazapis | strprevling(u'hello') -> u'helln\\xffff'
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76 | 1f2d1b42 | Antony Chazapis | """
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77 | 1f2d1b42 | Antony Chazapis | if not prefix: |
78 | 1f2d1b42 | Antony Chazapis | ## There is no prevling for the null string
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79 | 1f2d1b42 | Antony Chazapis | return prefix
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80 | 1f2d1b42 | Antony Chazapis | s = prefix[:-1]
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81 | 1f2d1b42 | Antony Chazapis | c = ord(prefix[-1]) |
82 | 1f2d1b42 | Antony Chazapis | if c > 0: |
83 | 2715ade4 | Sofia Papagiannaki | s += unichr(c - 1) + unichr(0xffff) |
84 | 1f2d1b42 | Antony Chazapis | return s
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85 | 1f2d1b42 | Antony Chazapis | |
86 | 1f2d1b42 | Antony Chazapis | |
87 | 1f2d1b42 | Antony Chazapis | _propnames = { |
88 | 2715ade4 | Sofia Papagiannaki | 'serial': 0, |
89 | 2715ade4 | Sofia Papagiannaki | 'node': 1, |
90 | 2715ade4 | Sofia Papagiannaki | 'hash': 2, |
91 | 2715ade4 | Sofia Papagiannaki | 'size': 3, |
92 | 2715ade4 | Sofia Papagiannaki | 'type': 4, |
93 | 2715ade4 | Sofia Papagiannaki | 'source': 5, |
94 | 2715ade4 | Sofia Papagiannaki | 'mtime': 6, |
95 | 2715ade4 | Sofia Papagiannaki | 'muser': 7, |
96 | 2715ade4 | Sofia Papagiannaki | 'uuid': 8, |
97 | 2715ade4 | Sofia Papagiannaki | 'checksum': 9, |
98 | 2715ade4 | Sofia Papagiannaki | 'cluster': 10 |
99 | 1f2d1b42 | Antony Chazapis | } |
100 | 1f2d1b42 | Antony Chazapis | |
101 | 1f2d1b42 | Antony Chazapis | |
102 | 1f2d1b42 | Antony Chazapis | class Node(DBWorker): |
103 | 60b8a083 | Antony Chazapis | """Nodes store path organization and have multiple versions.
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104 | 60b8a083 | Antony Chazapis | Versions store object history and have multiple attributes.
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105 | 1f2d1b42 | Antony Chazapis | Attributes store metadata.
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106 | 1f2d1b42 | Antony Chazapis | """
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107 | 2715ade4 | Sofia Papagiannaki | |
108 | 60b8a083 | Antony Chazapis | # TODO: Provide an interface for included and excluded clusters.
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109 | 2715ade4 | Sofia Papagiannaki | |
110 | 1f2d1b42 | Antony Chazapis | def __init__(self, **params): |
111 | 62f915a1 | Antony Chazapis | DBWorker.__init__(self, **params)
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112 | 1f2d1b42 | Antony Chazapis | execute = self.execute
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113 | 2715ade4 | Sofia Papagiannaki | |
114 | 1f2d1b42 | Antony Chazapis | execute(""" pragma foreign_keys = on """)
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115 | 2715ade4 | Sofia Papagiannaki | |
116 | 1f2d1b42 | Antony Chazapis | execute(""" create table if not exists nodes
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117 | 1f2d1b42 | Antony Chazapis | ( node integer primary key,
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118 | 62f915a1 | Antony Chazapis | parent integer default 0,
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119 | 44ad5860 | Antony Chazapis | path text not null default '',
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120 | 585b75e7 | Sofia Papagiannaki | latest_version integer,
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121 | 1f2d1b42 | Antony Chazapis | foreign key (parent)
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122 | 1f2d1b42 | Antony Chazapis | references nodes(node)
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123 | 1f2d1b42 | Antony Chazapis | on update cascade
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124 | 5e7485da | Antony Chazapis | on delete cascade ) """)
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125 | 1f2d1b42 | Antony Chazapis | execute(""" create unique index if not exists idx_nodes_path
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126 | 1f2d1b42 | Antony Chazapis | on nodes(path) """)
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127 | 585b75e7 | Sofia Papagiannaki | execute(""" create index if not exists idx_nodes_parent
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128 | 585b75e7 | Sofia Papagiannaki | on nodes(parent) """)
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129 | 2715ade4 | Sofia Papagiannaki | |
130 | 5e7485da | Antony Chazapis | execute(""" create table if not exists policy
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131 | 5e7485da | Antony Chazapis | ( node integer,
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132 | 5e7485da | Antony Chazapis | key text,
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133 | 5e7485da | Antony Chazapis | value text,
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134 | 5e7485da | Antony Chazapis | primary key (node, key)
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135 | 5e7485da | Antony Chazapis | foreign key (node)
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136 | 5e7485da | Antony Chazapis | references nodes(node)
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137 | 5e7485da | Antony Chazapis | on update cascade
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138 | 5e7485da | Antony Chazapis | on delete cascade ) """)
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139 | 2715ade4 | Sofia Papagiannaki | |
140 | 1f2d1b42 | Antony Chazapis | execute(""" create table if not exists statistics
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141 | 62f915a1 | Antony Chazapis | ( node integer,
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142 | 1f2d1b42 | Antony Chazapis | population integer not null default 0,
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143 | 1f2d1b42 | Antony Chazapis | size integer not null default 0,
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144 | 1f2d1b42 | Antony Chazapis | mtime integer,
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145 | 1f2d1b42 | Antony Chazapis | cluster integer not null default 0,
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146 | 1f2d1b42 | Antony Chazapis | primary key (node, cluster)
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147 | 1f2d1b42 | Antony Chazapis | foreign key (node)
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148 | 1f2d1b42 | Antony Chazapis | references nodes(node)
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149 | 1f2d1b42 | Antony Chazapis | on update cascade
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150 | 5e7485da | Antony Chazapis | on delete cascade ) """)
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151 | 2715ade4 | Sofia Papagiannaki | |
152 | 1f2d1b42 | Antony Chazapis | execute(""" create table if not exists versions
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153 | 1f2d1b42 | Antony Chazapis | ( serial integer primary key,
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154 | 62f915a1 | Antony Chazapis | node integer,
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155 | 1c2fc0ff | Antony Chazapis | hash text,
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156 | 1f2d1b42 | Antony Chazapis | size integer not null default 0,
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157 | 66ce2ca5 | Antony Chazapis | type text not null default '',
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158 | 1f2d1b42 | Antony Chazapis | source integer,
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159 | 1f2d1b42 | Antony Chazapis | mtime integer,
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160 | c1cdc455 | Antony Chazapis | muser text not null default '',
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161 | 25ae8b75 | Antony Chazapis | uuid text not null default '',
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162 | 33b4e4a6 | Antony Chazapis | checksum text not null default '',
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163 | 1f2d1b42 | Antony Chazapis | cluster integer not null default 0,
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164 | 1f2d1b42 | Antony Chazapis | foreign key (node)
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165 | 1f2d1b42 | Antony Chazapis | references nodes(node)
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166 | 1f2d1b42 | Antony Chazapis | on update cascade
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167 | 1f2d1b42 | Antony Chazapis | on delete cascade ) """)
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168 | 9e35988c | Antony Chazapis | execute(""" create index if not exists idx_versions_node_mtime
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169 | 9e35988c | Antony Chazapis | on versions(node, mtime) """)
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170 | 25ae8b75 | Antony Chazapis | execute(""" create index if not exists idx_versions_node_uuid
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171 | 25ae8b75 | Antony Chazapis | on versions(uuid) """)
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172 | 2715ade4 | Sofia Papagiannaki | |
173 | 1f2d1b42 | Antony Chazapis | execute(""" create table if not exists attributes
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174 | 1f2d1b42 | Antony Chazapis | ( serial integer,
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175 | 4819d34f | Antony Chazapis | domain text,
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176 | 1f2d1b42 | Antony Chazapis | key text,
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177 | 1f2d1b42 | Antony Chazapis | value text,
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178 | 4819d34f | Antony Chazapis | primary key (serial, domain, key)
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179 | 1f2d1b42 | Antony Chazapis | foreign key (serial)
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180 | 1f2d1b42 | Antony Chazapis | references versions(serial)
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181 | 1f2d1b42 | Antony Chazapis | on update cascade
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182 | 1f2d1b42 | Antony Chazapis | on delete cascade ) """)
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183 | 2715ade4 | Sofia Papagiannaki | |
184 | 1f2d1b42 | Antony Chazapis | q = "insert or ignore into nodes(node, parent) values (?, ?)"
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185 | 1f2d1b42 | Antony Chazapis | execute(q, (ROOTNODE, ROOTNODE)) |
186 | 2715ade4 | Sofia Papagiannaki | |
187 | 44ad5860 | Antony Chazapis | def node_create(self, parent, path): |
188 | 44ad5860 | Antony Chazapis | """Create a new node from the given properties.
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189 | 44ad5860 | Antony Chazapis | Return the node identifier of the new node.
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190 | 44ad5860 | Antony Chazapis | """
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191 | 2715ade4 | Sofia Papagiannaki | |
192 | 44ad5860 | Antony Chazapis | q = ("insert into nodes (parent, path) "
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193 | 44ad5860 | Antony Chazapis | "values (?, ?)")
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194 | 44ad5860 | Antony Chazapis | props = (parent, path) |
195 | 44ad5860 | Antony Chazapis | return self.execute(q, props).lastrowid |
196 | 2715ade4 | Sofia Papagiannaki | |
197 | 44ad5860 | Antony Chazapis | def node_lookup(self, path): |
198 | 44ad5860 | Antony Chazapis | """Lookup the current node of the given path.
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199 | 44ad5860 | Antony Chazapis | Return None if the path is not found.
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200 | 44ad5860 | Antony Chazapis | """
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201 | 2715ade4 | Sofia Papagiannaki | |
202 | c1cdc455 | Antony Chazapis | q = "select node from nodes where path = ?"
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203 | 44ad5860 | Antony Chazapis | self.execute(q, (path,))
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204 | 44ad5860 | Antony Chazapis | r = self.fetchone()
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205 | 44ad5860 | Antony Chazapis | if r is not None: |
206 | 44ad5860 | Antony Chazapis | return r[0] |
207 | 44ad5860 | Antony Chazapis | return None |
208 | 2715ade4 | Sofia Papagiannaki | |
209 | 4d15c94e | Sofia Papagiannaki | def node_lookup_bulk(self, paths): |
210 | 2715ade4 | Sofia Papagiannaki | """Lookup the current nodes for the given paths.
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211 | 4d15c94e | Sofia Papagiannaki | Return () if the path is not found.
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212 | 4d15c94e | Sofia Papagiannaki | """
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213 | 2715ade4 | Sofia Papagiannaki | |
214 | 4d15c94e | Sofia Papagiannaki | placeholders = ','.join('?' for path in paths) |
215 | cf4a7a7b | Sofia Papagiannaki | q = "select node from nodes where path in (%s)" % placeholders
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216 | 4d15c94e | Sofia Papagiannaki | self.execute(q, paths)
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217 | cf4a7a7b | Sofia Papagiannaki | r = self.fetchall()
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218 | cf4a7a7b | Sofia Papagiannaki | if r is not None: |
219 | 2715ade4 | Sofia Papagiannaki | return [row[0] for row in r] |
220 | cf4a7a7b | Sofia Papagiannaki | return None |
221 | 2715ade4 | Sofia Papagiannaki | |
222 | 62f915a1 | Antony Chazapis | def node_get_properties(self, node): |
223 | 62f915a1 | Antony Chazapis | """Return the node's (parent, path).
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224 | 62f915a1 | Antony Chazapis | Return None if the node is not found.
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225 | 62f915a1 | Antony Chazapis | """
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226 | 2715ade4 | Sofia Papagiannaki | |
227 | 62f915a1 | Antony Chazapis | q = "select parent, path from nodes where node = ?"
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228 | c1cdc455 | Antony Chazapis | self.execute(q, (node,))
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229 | 62f915a1 | Antony Chazapis | return self.fetchone() |
230 | 2715ade4 | Sofia Papagiannaki | |
231 | 676edf89 | Antony Chazapis | def node_get_versions(self, node, keys=(), propnames=_propnames): |
232 | 676edf89 | Antony Chazapis | """Return the properties of all versions at node.
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233 | 676edf89 | Antony Chazapis | If keys is empty, return all properties in the order
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234 | 33b4e4a6 | Antony Chazapis | (serial, node, hash, size, type, source, mtime, muser, uuid, checksum, cluster).
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235 | 676edf89 | Antony Chazapis | """
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236 | 2715ade4 | Sofia Papagiannaki | |
237 | 33b4e4a6 | Antony Chazapis | q = ("select serial, node, hash, size, type, source, mtime, muser, uuid, checksum, cluster "
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238 | 676edf89 | Antony Chazapis | "from versions "
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239 | 676edf89 | Antony Chazapis | "where node = ?")
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240 | 60b8a083 | Antony Chazapis | self.execute(q, (node,))
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241 | 676edf89 | Antony Chazapis | r = self.fetchall()
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242 | 676edf89 | Antony Chazapis | if r is None: |
243 | 676edf89 | Antony Chazapis | return r
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244 | 2715ade4 | Sofia Papagiannaki | |
245 | 676edf89 | Antony Chazapis | if not keys: |
246 | 676edf89 | Antony Chazapis | return r
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247 | 676edf89 | Antony Chazapis | return [[p[propnames[k]] for k in keys if k in propnames] for p in r] |
248 | 2715ade4 | Sofia Papagiannaki | |
249 | c915d3bf | Antony Chazapis | def node_count_children(self, node): |
250 | 44ad5860 | Antony Chazapis | """Return node's child count."""
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251 | 2715ade4 | Sofia Papagiannaki | |
252 | c915d3bf | Antony Chazapis | q = "select count(node) from nodes where parent = ? and node != 0"
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253 | 44ad5860 | Antony Chazapis | self.execute(q, (node,))
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254 | 62f915a1 | Antony Chazapis | r = self.fetchone()
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255 | 44ad5860 | Antony Chazapis | if r is None: |
256 | 44ad5860 | Antony Chazapis | return 0 |
257 | 62f915a1 | Antony Chazapis | return r[0] |
258 | 2715ade4 | Sofia Papagiannaki | |
259 | c915d3bf | Antony Chazapis | def node_purge_children(self, parent, before=inf, cluster=0): |
260 | c915d3bf | Antony Chazapis | """Delete all versions with the specified
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261 | c915d3bf | Antony Chazapis | parent and cluster, and return
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262 | 813e42e5 | Antony Chazapis | the hashes and size of versions deleted.
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263 | c915d3bf | Antony Chazapis | Clears out nodes with no remaining versions.
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264 | c915d3bf | Antony Chazapis | """
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265 | 2715ade4 | Sofia Papagiannaki | |
266 | c915d3bf | Antony Chazapis | execute = self.execute
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267 | c915d3bf | Antony Chazapis | q = ("select count(serial), sum(size) from versions "
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268 | c915d3bf | Antony Chazapis | "where node in (select node "
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269 | 2715ade4 | Sofia Papagiannaki | "from nodes "
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270 | 2715ade4 | Sofia Papagiannaki | "where parent = ?) "
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271 | c915d3bf | Antony Chazapis | "and cluster = ? "
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272 | c915d3bf | Antony Chazapis | "and mtime <= ?")
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273 | c915d3bf | Antony Chazapis | args = (parent, cluster, before) |
274 | c915d3bf | Antony Chazapis | execute(q, args) |
275 | c915d3bf | Antony Chazapis | nr, size = self.fetchone()
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276 | c915d3bf | Antony Chazapis | if not nr: |
277 | 813e42e5 | Antony Chazapis | return (), 0 |
278 | 60b8a083 | Antony Chazapis | mtime = time() |
279 | 60b8a083 | Antony Chazapis | self.statistics_update(parent, -nr, -size, mtime, cluster)
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280 | 60b8a083 | Antony Chazapis | self.statistics_update_ancestors(parent, -nr, -size, mtime, cluster)
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281 | 2715ade4 | Sofia Papagiannaki | |
282 | e1f09a6e | Antony Chazapis | q = ("select hash from versions "
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283 | c915d3bf | Antony Chazapis | "where node in (select node "
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284 | 2715ade4 | Sofia Papagiannaki | "from nodes "
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285 | 2715ade4 | Sofia Papagiannaki | "where parent = ?) "
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286 | c915d3bf | Antony Chazapis | "and cluster = ? "
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287 | c915d3bf | Antony Chazapis | "and mtime <= ?")
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288 | c915d3bf | Antony Chazapis | execute(q, args) |
289 | e1f09a6e | Antony Chazapis | hashes = [r[0] for r in self.fetchall()] |
290 | c915d3bf | Antony Chazapis | q = ("delete from versions "
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291 | c915d3bf | Antony Chazapis | "where node in (select node "
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292 | 2715ade4 | Sofia Papagiannaki | "from nodes "
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293 | 2715ade4 | Sofia Papagiannaki | "where parent = ?) "
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294 | c915d3bf | Antony Chazapis | "and cluster = ? "
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295 | c915d3bf | Antony Chazapis | "and mtime <= ?")
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296 | c915d3bf | Antony Chazapis | execute(q, args) |
297 | 62f915a1 | Antony Chazapis | q = ("delete from nodes "
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298 | 62f915a1 | Antony Chazapis | "where node in (select node from nodes n "
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299 | 2715ade4 | Sofia Papagiannaki | "where (select count(serial) "
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300 | 2715ade4 | Sofia Papagiannaki | "from versions "
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301 | 2715ade4 | Sofia Papagiannaki | "where node = n.node) = 0 "
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302 | 2715ade4 | Sofia Papagiannaki | "and parent = ?)")
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303 | 62f915a1 | Antony Chazapis | execute(q, (parent,)) |
304 | 813e42e5 | Antony Chazapis | return hashes, size
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305 | 2715ade4 | Sofia Papagiannaki | |
306 | c915d3bf | Antony Chazapis | def node_purge(self, node, before=inf, cluster=0): |
307 | c915d3bf | Antony Chazapis | """Delete all versions with the specified
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308 | c915d3bf | Antony Chazapis | node and cluster, and return
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309 | 813e42e5 | Antony Chazapis | the hashes and size of versions deleted.
|
310 | c915d3bf | Antony Chazapis | Clears out the node if it has no remaining versions.
|
311 | c915d3bf | Antony Chazapis | """
|
312 | 2715ade4 | Sofia Papagiannaki | |
313 | c915d3bf | Antony Chazapis | execute = self.execute
|
314 | c915d3bf | Antony Chazapis | q = ("select count(serial), sum(size) from versions "
|
315 | c915d3bf | Antony Chazapis | "where node = ? "
|
316 | c915d3bf | Antony Chazapis | "and cluster = ? "
|
317 | c915d3bf | Antony Chazapis | "and mtime <= ?")
|
318 | c915d3bf | Antony Chazapis | args = (node, cluster, before) |
319 | c915d3bf | Antony Chazapis | execute(q, args) |
320 | c915d3bf | Antony Chazapis | nr, size = self.fetchone()
|
321 | c915d3bf | Antony Chazapis | if not nr: |
322 | 813e42e5 | Antony Chazapis | return (), 0 |
323 | 60b8a083 | Antony Chazapis | mtime = time() |
324 | 60b8a083 | Antony Chazapis | self.statistics_update_ancestors(node, -nr, -size, mtime, cluster)
|
325 | 2715ade4 | Sofia Papagiannaki | |
326 | e1f09a6e | Antony Chazapis | q = ("select hash from versions "
|
327 | c915d3bf | Antony Chazapis | "where node = ? "
|
328 | c915d3bf | Antony Chazapis | "and cluster = ? "
|
329 | c915d3bf | Antony Chazapis | "and mtime <= ?")
|
330 | c915d3bf | Antony Chazapis | execute(q, args) |
331 | e1f09a6e | Antony Chazapis | hashes = [r[0] for r in self.fetchall()] |
332 | c915d3bf | Antony Chazapis | q = ("delete from versions "
|
333 | c915d3bf | Antony Chazapis | "where node = ? "
|
334 | c915d3bf | Antony Chazapis | "and cluster = ? "
|
335 | c915d3bf | Antony Chazapis | "and mtime <= ?")
|
336 | c915d3bf | Antony Chazapis | execute(q, args) |
337 | 62f915a1 | Antony Chazapis | q = ("delete from nodes "
|
338 | 62f915a1 | Antony Chazapis | "where node in (select node from nodes n "
|
339 | 2715ade4 | Sofia Papagiannaki | "where (select count(serial) "
|
340 | 2715ade4 | Sofia Papagiannaki | "from versions "
|
341 | 2715ade4 | Sofia Papagiannaki | "where node = n.node) = 0 "
|
342 | 2715ade4 | Sofia Papagiannaki | "and node = ?)")
|
343 | 62f915a1 | Antony Chazapis | execute(q, (node,)) |
344 | 813e42e5 | Antony Chazapis | return hashes, size
|
345 | 2715ade4 | Sofia Papagiannaki | |
346 | c915d3bf | Antony Chazapis | def node_remove(self, node): |
347 | c915d3bf | Antony Chazapis | """Remove the node specified.
|
348 | c915d3bf | Antony Chazapis | Return false if the node has children or is not found.
|
349 | c915d3bf | Antony Chazapis | """
|
350 | 2715ade4 | Sofia Papagiannaki | |
351 | c1cdc455 | Antony Chazapis | if self.node_count_children(node): |
352 | c915d3bf | Antony Chazapis | return False |
353 | 2715ade4 | Sofia Papagiannaki | |
354 | c915d3bf | Antony Chazapis | mtime = time() |
355 | 62f915a1 | Antony Chazapis | q = ("select count(serial), sum(size), cluster "
|
356 | c1cdc455 | Antony Chazapis | "from versions "
|
357 | c1cdc455 | Antony Chazapis | "where node = ? "
|
358 | c1cdc455 | Antony Chazapis | "group by cluster")
|
359 | c915d3bf | Antony Chazapis | self.execute(q, (node,))
|
360 | c915d3bf | Antony Chazapis | for population, size, cluster in self.fetchall(): |
361 | 2715ade4 | Sofia Papagiannaki | self.statistics_update_ancestors(
|
362 | 2715ade4 | Sofia Papagiannaki | node, -population, -size, mtime, cluster) |
363 | 2715ade4 | Sofia Papagiannaki | |
364 | c915d3bf | Antony Chazapis | q = "delete from nodes where node = ?"
|
365 | c915d3bf | Antony Chazapis | self.execute(q, (node,))
|
366 | c915d3bf | Antony Chazapis | return True |
367 | 2715ade4 | Sofia Papagiannaki | |
368 | 5e7485da | Antony Chazapis | def policy_get(self, node): |
369 | 5e7485da | Antony Chazapis | q = "select key, value from policy where node = ?"
|
370 | 5e7485da | Antony Chazapis | self.execute(q, (node,))
|
371 | 5e7485da | Antony Chazapis | return dict(self.fetchall()) |
372 | 2715ade4 | Sofia Papagiannaki | |
373 | 5e7485da | Antony Chazapis | def policy_set(self, node, policy): |
374 | 5e7485da | Antony Chazapis | q = "insert or replace into policy (node, key, value) values (?, ?, ?)"
|
375 | 5e7485da | Antony Chazapis | self.executemany(q, ((node, k, v) for k, v in policy.iteritems())) |
376 | 2715ade4 | Sofia Papagiannaki | |
377 | c1cdc455 | Antony Chazapis | def statistics_get(self, node, cluster=0): |
378 | c1cdc455 | Antony Chazapis | """Return population, total size and last mtime
|
379 | c1cdc455 | Antony Chazapis | for all versions under node that belong to the cluster.
|
380 | c1cdc455 | Antony Chazapis | """
|
381 | 2715ade4 | Sofia Papagiannaki | |
382 | 62f915a1 | Antony Chazapis | q = ("select population, size, mtime from statistics "
|
383 | c1cdc455 | Antony Chazapis | "where node = ? and cluster = ?")
|
384 | c1cdc455 | Antony Chazapis | self.execute(q, (node, cluster))
|
385 | 62f915a1 | Antony Chazapis | return self.fetchone() |
386 | 2715ade4 | Sofia Papagiannaki | |
387 | c1cdc455 | Antony Chazapis | def statistics_update(self, node, population, size, mtime, cluster=0): |
388 | c1cdc455 | Antony Chazapis | """Update the statistics of the given node.
|
389 | c1cdc455 | Antony Chazapis | Statistics keep track the population, total
|
390 | c1cdc455 | Antony Chazapis | size of objects and mtime in the node's namespace.
|
391 | c1cdc455 | Antony Chazapis | May be zero or positive or negative numbers.
|
392 | c1cdc455 | Antony Chazapis | """
|
393 | 2715ade4 | Sofia Papagiannaki | |
394 | 62f915a1 | Antony Chazapis | qs = ("select population, size from statistics "
|
395 | c1cdc455 | Antony Chazapis | "where node = ? and cluster = ?")
|
396 | c1cdc455 | Antony Chazapis | qu = ("insert or replace into statistics (node, population, size, mtime, cluster) "
|
397 | c1cdc455 | Antony Chazapis | "values (?, ?, ?, ?, ?)")
|
398 | c1cdc455 | Antony Chazapis | self.execute(qs, (node, cluster))
|
399 | c1cdc455 | Antony Chazapis | r = self.fetchone()
|
400 | c1cdc455 | Antony Chazapis | if r is None: |
401 | c1cdc455 | Antony Chazapis | prepopulation, presize = (0, 0) |
402 | c1cdc455 | Antony Chazapis | else:
|
403 | c1cdc455 | Antony Chazapis | prepopulation, presize = r |
404 | c1cdc455 | Antony Chazapis | population += prepopulation |
405 | c1cdc455 | Antony Chazapis | size += presize |
406 | c1cdc455 | Antony Chazapis | self.execute(qu, (node, population, size, mtime, cluster))
|
407 | 2715ade4 | Sofia Papagiannaki | |
408 | c1cdc455 | Antony Chazapis | def statistics_update_ancestors(self, node, population, size, mtime, cluster=0): |
409 | c1cdc455 | Antony Chazapis | """Update the statistics of the given node's parent.
|
410 | c1cdc455 | Antony Chazapis | Then recursively update all parents up to the root.
|
411 | c1cdc455 | Antony Chazapis | Population is not recursive.
|
412 | c1cdc455 | Antony Chazapis | """
|
413 | 2715ade4 | Sofia Papagiannaki | |
414 | c1cdc455 | Antony Chazapis | while True: |
415 | c1cdc455 | Antony Chazapis | if node == 0: |
416 | c1cdc455 | Antony Chazapis | break
|
417 | 62f915a1 | Antony Chazapis | props = self.node_get_properties(node)
|
418 | 62f915a1 | Antony Chazapis | if props is None: |
419 | c1cdc455 | Antony Chazapis | break
|
420 | 62f915a1 | Antony Chazapis | parent, path = props |
421 | 62f915a1 | Antony Chazapis | self.statistics_update(parent, population, size, mtime, cluster)
|
422 | 62f915a1 | Antony Chazapis | node = parent |
423 | 2715ade4 | Sofia Papagiannaki | population = 0 # Population isn't recursive |
424 | 2715ade4 | Sofia Papagiannaki | |
425 | 62f915a1 | Antony Chazapis | def statistics_latest(self, node, before=inf, except_cluster=0): |
426 | 62f915a1 | Antony Chazapis | """Return population, total size and last mtime
|
427 | 62f915a1 | Antony Chazapis | for all latest versions under node that
|
428 | 62f915a1 | Antony Chazapis | do not belong to the cluster.
|
429 | 62f915a1 | Antony Chazapis | """
|
430 | 2715ade4 | Sofia Papagiannaki | |
431 | 676edf89 | Antony Chazapis | execute = self.execute
|
432 | 676edf89 | Antony Chazapis | fetchone = self.fetchone
|
433 | 2715ade4 | Sofia Papagiannaki | |
434 | 62f915a1 | Antony Chazapis | # The node.
|
435 | 62f915a1 | Antony Chazapis | props = self.node_get_properties(node)
|
436 | 62f915a1 | Antony Chazapis | if props is None: |
437 | 62f915a1 | Antony Chazapis | return None |
438 | 62f915a1 | Antony Chazapis | parent, path = props |
439 | 2715ade4 | Sofia Papagiannaki | |
440 | 62f915a1 | Antony Chazapis | # The latest version.
|
441 | 33b4e4a6 | Antony Chazapis | q = ("select serial, node, hash, size, type, source, mtime, muser, uuid, checksum, cluster "
|
442 | 585b75e7 | Sofia Papagiannaki | "from versions v "
|
443 | 585b75e7 | Sofia Papagiannaki | "where serial = %s "
|
444 | 62f915a1 | Antony Chazapis | "and cluster != ?")
|
445 | 2715ade4 | Sofia Papagiannaki | subq, args = self._construct_latest_version_subquery(
|
446 | 2715ade4 | Sofia Papagiannaki | node=node, before=before) |
447 | 585b75e7 | Sofia Papagiannaki | execute(q % subq, args + [except_cluster]) |
448 | 676edf89 | Antony Chazapis | props = fetchone() |
449 | 62f915a1 | Antony Chazapis | if props is None: |
450 | 62f915a1 | Antony Chazapis | return None |
451 | 62f915a1 | Antony Chazapis | mtime = props[MTIME] |
452 | 2715ade4 | Sofia Papagiannaki | |
453 | 62f915a1 | Antony Chazapis | # First level, just under node (get population).
|
454 | 62f915a1 | Antony Chazapis | q = ("select count(serial), sum(size), max(mtime) "
|
455 | 62f915a1 | Antony Chazapis | "from versions v "
|
456 | 585b75e7 | Sofia Papagiannaki | "where serial = %s "
|
457 | 62f915a1 | Antony Chazapis | "and cluster != ? "
|
458 | 62f915a1 | Antony Chazapis | "and node in (select node "
|
459 | 2715ade4 | Sofia Papagiannaki | "from nodes "
|
460 | 2715ade4 | Sofia Papagiannaki | "where parent = ?)")
|
461 | 2715ade4 | Sofia Papagiannaki | subq, args = self._construct_latest_version_subquery(
|
462 | 2715ade4 | Sofia Papagiannaki | node=None, before=before)
|
463 | 585b75e7 | Sofia Papagiannaki | execute(q % subq, args + [except_cluster, node]) |
464 | 62f915a1 | Antony Chazapis | r = fetchone() |
465 | 62f915a1 | Antony Chazapis | if r is None: |
466 | 62f915a1 | Antony Chazapis | return None |
467 | 62f915a1 | Antony Chazapis | count = r[0]
|
468 | 62f915a1 | Antony Chazapis | mtime = max(mtime, r[2]) |
469 | 62f915a1 | Antony Chazapis | if count == 0: |
470 | 62f915a1 | Antony Chazapis | return (0, 0, mtime) |
471 | 2715ade4 | Sofia Papagiannaki | |
472 | 62f915a1 | Antony Chazapis | # All children (get size and mtime).
|
473 | 92da0e5a | Antony Chazapis | # This is why the full path is stored.
|
474 | 62f915a1 | Antony Chazapis | q = ("select count(serial), sum(size), max(mtime) "
|
475 | 62f915a1 | Antony Chazapis | "from versions v "
|
476 | 585b75e7 | Sofia Papagiannaki | "where serial = %s "
|
477 | 62f915a1 | Antony Chazapis | "and cluster != ? "
|
478 | 62f915a1 | Antony Chazapis | "and node in (select node "
|
479 | 2715ade4 | Sofia Papagiannaki | "from nodes "
|
480 | 2715ade4 | Sofia Papagiannaki | "where path like ? escape '\\')")
|
481 | 2715ade4 | Sofia Papagiannaki | subq, args = self._construct_latest_version_subquery(
|
482 | 2715ade4 | Sofia Papagiannaki | node=None, before=before)
|
483 | 2715ade4 | Sofia Papagiannaki | execute( |
484 | 2715ade4 | Sofia Papagiannaki | q % subq, args + [except_cluster, self.escape_like(path) + '%']) |
485 | 62f915a1 | Antony Chazapis | r = fetchone() |
486 | 62f915a1 | Antony Chazapis | if r is None: |
487 | 62f915a1 | Antony Chazapis | return None |
488 | 62f915a1 | Antony Chazapis | size = r[1] - props[SIZE]
|
489 | 62f915a1 | Antony Chazapis | mtime = max(mtime, r[2]) |
490 | 62f915a1 | Antony Chazapis | return (count, size, mtime)
|
491 | 2715ade4 | Sofia Papagiannaki | |
492 | 585b75e7 | Sofia Papagiannaki | def nodes_set_latest_version(self, node, serial): |
493 | 2715ade4 | Sofia Papagiannaki | q = ("update nodes set latest_version = ? where node = ?")
|
494 | 585b75e7 | Sofia Papagiannaki | props = (serial, node) |
495 | 585b75e7 | Sofia Papagiannaki | self.execute(q, props)
|
496 | 2715ade4 | Sofia Papagiannaki | |
497 | 33b4e4a6 | Antony Chazapis | def version_create(self, node, hash, size, type, source, muser, uuid, checksum, cluster=0): |
498 | 44ad5860 | Antony Chazapis | """Create a new version from the given properties.
|
499 | 44ad5860 | Antony Chazapis | Return the (serial, mtime) of the new version.
|
500 | 44ad5860 | Antony Chazapis | """
|
501 | 2715ade4 | Sofia Papagiannaki | |
502 | 33b4e4a6 | Antony Chazapis | q = ("insert into versions (node, hash, size, type, source, mtime, muser, uuid, checksum, cluster) "
|
503 | 33b4e4a6 | Antony Chazapis | "values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
|
504 | 44ad5860 | Antony Chazapis | mtime = time() |
505 | 2715ade4 | Sofia Papagiannaki | props = (node, hash, size, type, source, mtime, muser, |
506 | 2715ade4 | Sofia Papagiannaki | uuid, checksum, cluster) |
507 | 44ad5860 | Antony Chazapis | serial = self.execute(q, props).lastrowid
|
508 | c1cdc455 | Antony Chazapis | self.statistics_update_ancestors(node, 1, size, mtime, cluster) |
509 | 2715ade4 | Sofia Papagiannaki | |
510 | 585b75e7 | Sofia Papagiannaki | self.nodes_set_latest_version(node, serial)
|
511 | 2715ade4 | Sofia Papagiannaki | |
512 | 44ad5860 | Antony Chazapis | return serial, mtime
|
513 | 2715ade4 | Sofia Papagiannaki | |
514 | cf4a7a7b | Sofia Papagiannaki | def version_lookup(self, node, before=inf, cluster=0, all_props=True): |
515 | 44ad5860 | Antony Chazapis | """Lookup the current version of the given node.
|
516 | 44ad5860 | Antony Chazapis | Return a list with its properties:
|
517 | 2715ade4 | Sofia Papagiannaki | (serial, node, hash, size, type, source, mtime,
|
518 | 2715ade4 | Sofia Papagiannaki | muser, uuid, checksum, cluster)
|
519 | 44ad5860 | Antony Chazapis | or None if the current version is not found in the given cluster.
|
520 | 44ad5860 | Antony Chazapis | """
|
521 | 2715ade4 | Sofia Papagiannaki | |
522 | cf4a7a7b | Sofia Papagiannaki | q = ("select %s "
|
523 | 585b75e7 | Sofia Papagiannaki | "from versions v "
|
524 | 585b75e7 | Sofia Papagiannaki | "where serial = %s "
|
525 | 44ad5860 | Antony Chazapis | "and cluster = ?")
|
526 | 2715ade4 | Sofia Papagiannaki | subq, args = self._construct_latest_version_subquery(
|
527 | 2715ade4 | Sofia Papagiannaki | node=node, before=before) |
528 | cf4a7a7b | Sofia Papagiannaki | if not all_props: |
529 | 585b75e7 | Sofia Papagiannaki | q = q % ("serial", subq)
|
530 | cf4a7a7b | Sofia Papagiannaki | else:
|
531 | 585b75e7 | Sofia Papagiannaki | q = q % ("serial, node, hash, size, type, source, mtime, muser, uuid, checksum, cluster", subq)
|
532 | 2715ade4 | Sofia Papagiannaki | |
533 | 585b75e7 | Sofia Papagiannaki | self.execute(q, args + [cluster])
|
534 | 44ad5860 | Antony Chazapis | props = self.fetchone()
|
535 | 44ad5860 | Antony Chazapis | if props is not None: |
536 | 44ad5860 | Antony Chazapis | return props
|
537 | 44ad5860 | Antony Chazapis | return None |
538 | 4d15c94e | Sofia Papagiannaki | |
539 | cf4a7a7b | Sofia Papagiannaki | def version_lookup_bulk(self, nodes, before=inf, cluster=0, all_props=True): |
540 | 4d15c94e | Sofia Papagiannaki | """Lookup the current versions of the given nodes.
|
541 | 4d15c94e | Sofia Papagiannaki | Return a list with their properties:
|
542 | 4d15c94e | Sofia Papagiannaki | (serial, node, hash, size, type, source, mtime, muser, uuid, checksum, cluster).
|
543 | 4d15c94e | Sofia Papagiannaki | """
|
544 | 2715ade4 | Sofia Papagiannaki | |
545 | 585b75e7 | Sofia Papagiannaki | if not nodes: |
546 | 2715ade4 | Sofia Papagiannaki | return ()
|
547 | cf4a7a7b | Sofia Papagiannaki | q = ("select %s "
|
548 | 4d15c94e | Sofia Papagiannaki | "from versions "
|
549 | 585b75e7 | Sofia Papagiannaki | "where serial in %s "
|
550 | 9ac201e2 | Sofia Papagiannaki | "and cluster = ? %s")
|
551 | 2715ade4 | Sofia Papagiannaki | subq, args = self._construct_latest_versions_subquery(
|
552 | 2715ade4 | Sofia Papagiannaki | nodes=nodes, before=before) |
553 | cf4a7a7b | Sofia Papagiannaki | if not all_props: |
554 | 585b75e7 | Sofia Papagiannaki | q = q % ("serial", subq, '') |
555 | cf4a7a7b | Sofia Papagiannaki | else:
|
556 | 2715ade4 | Sofia Papagiannaki | q = q % ("serial, node, hash, size, type, source, mtime, muser, uuid, checksum, cluster", subq, 'order by node') |
557 | 2715ade4 | Sofia Papagiannaki | |
558 | 585b75e7 | Sofia Papagiannaki | args += [cluster] |
559 | 4d15c94e | Sofia Papagiannaki | self.execute(q, args)
|
560 | 4d15c94e | Sofia Papagiannaki | return self.fetchall() |
561 | 2715ade4 | Sofia Papagiannaki | |
562 | 1f2d1b42 | Antony Chazapis | def version_get_properties(self, serial, keys=(), propnames=_propnames): |
563 | 1f2d1b42 | Antony Chazapis | """Return a sequence of values for the properties of
|
564 | 1f2d1b42 | Antony Chazapis | the version specified by serial and the keys, in the order given.
|
565 | 1f2d1b42 | Antony Chazapis | If keys is empty, return all properties in the order
|
566 | 33b4e4a6 | Antony Chazapis | (serial, node, hash, size, type, source, mtime, muser, uuid, checksum, cluster).
|
567 | 1f2d1b42 | Antony Chazapis | """
|
568 | 2715ade4 | Sofia Papagiannaki | |
569 | 33b4e4a6 | Antony Chazapis | q = ("select serial, node, hash, size, type, source, mtime, muser, uuid, checksum, cluster "
|
570 | 62f915a1 | Antony Chazapis | "from versions "
|
571 | 1f2d1b42 | Antony Chazapis | "where serial = ?")
|
572 | 1f2d1b42 | Antony Chazapis | self.execute(q, (serial,))
|
573 | 1f2d1b42 | Antony Chazapis | r = self.fetchone()
|
574 | 1f2d1b42 | Antony Chazapis | if r is None: |
575 | 1f2d1b42 | Antony Chazapis | return r
|
576 | 2715ade4 | Sofia Papagiannaki | |
577 | 1f2d1b42 | Antony Chazapis | if not keys: |
578 | 1f2d1b42 | Antony Chazapis | return r
|
579 | 1f2d1b42 | Antony Chazapis | return [r[propnames[k]] for k in keys if k in propnames] |
580 | 2715ade4 | Sofia Papagiannaki | |
581 | 33b4e4a6 | Antony Chazapis | def version_put_property(self, serial, key, value): |
582 | 33b4e4a6 | Antony Chazapis | """Set value for the property of version specified by key."""
|
583 | 2715ade4 | Sofia Papagiannaki | |
584 | 33b4e4a6 | Antony Chazapis | if key not in _propnames: |
585 | 33b4e4a6 | Antony Chazapis | return
|
586 | 33b4e4a6 | Antony Chazapis | q = "update versions set %s = ? where serial = ?" % key
|
587 | 33b4e4a6 | Antony Chazapis | self.execute(q, (value, serial))
|
588 | 2715ade4 | Sofia Papagiannaki | |
589 | 44ad5860 | Antony Chazapis | def version_recluster(self, serial, cluster): |
590 | 44ad5860 | Antony Chazapis | """Move the version into another cluster."""
|
591 | 2715ade4 | Sofia Papagiannaki | |
592 | 62f915a1 | Antony Chazapis | props = self.version_get_properties(serial)
|
593 | 62f915a1 | Antony Chazapis | if not props: |
594 | 62f915a1 | Antony Chazapis | return
|
595 | 44ad5860 | Antony Chazapis | node = props[NODE] |
596 | 44ad5860 | Antony Chazapis | size = props[SIZE] |
597 | 44ad5860 | Antony Chazapis | oldcluster = props[CLUSTER] |
598 | 44ad5860 | Antony Chazapis | if cluster == oldcluster:
|
599 | 44ad5860 | Antony Chazapis | return
|
600 | 2715ade4 | Sofia Papagiannaki | |
601 | 62f915a1 | Antony Chazapis | mtime = time() |
602 | c1cdc455 | Antony Chazapis | self.statistics_update_ancestors(node, -1, -size, mtime, oldcluster) |
603 | c1cdc455 | Antony Chazapis | self.statistics_update_ancestors(node, 1, size, mtime, cluster) |
604 | 2715ade4 | Sofia Papagiannaki | |
605 | 62f915a1 | Antony Chazapis | q = "update versions set cluster = ? where serial = ?"
|
606 | c915d3bf | Antony Chazapis | self.execute(q, (cluster, serial))
|
607 | 2715ade4 | Sofia Papagiannaki | |
608 | 62f915a1 | Antony Chazapis | def version_remove(self, serial): |
609 | 62f915a1 | Antony Chazapis | """Remove the serial specified."""
|
610 | 2715ade4 | Sofia Papagiannaki | |
611 | 5161c672 | Antony Chazapis | props = self.version_get_properties(serial)
|
612 | 62f915a1 | Antony Chazapis | if not props: |
613 | 62f915a1 | Antony Chazapis | return
|
614 | 62f915a1 | Antony Chazapis | node = props[NODE] |
615 | 5161c672 | Antony Chazapis | hash = props[HASH] |
616 | 62f915a1 | Antony Chazapis | size = props[SIZE] |
617 | 62f915a1 | Antony Chazapis | cluster = props[CLUSTER] |
618 | 2715ade4 | Sofia Papagiannaki | |
619 | 62f915a1 | Antony Chazapis | mtime = time() |
620 | 62f915a1 | Antony Chazapis | self.statistics_update_ancestors(node, -1, -size, mtime, cluster) |
621 | 2715ade4 | Sofia Papagiannaki | |
622 | 62f915a1 | Antony Chazapis | q = "delete from versions where serial = ?"
|
623 | 62f915a1 | Antony Chazapis | self.execute(q, (serial,))
|
624 | 2715ade4 | Sofia Papagiannaki | |
625 | 585b75e7 | Sofia Papagiannaki | props = self.version_lookup(node, cluster=cluster, all_props=False) |
626 | 585b75e7 | Sofia Papagiannaki | if props:
|
627 | 2715ade4 | Sofia Papagiannaki | self.nodes_set_latest_version(node, props[0]) |
628 | 813e42e5 | Antony Chazapis | return hash, size |
629 | 2715ade4 | Sofia Papagiannaki | |
630 | 4819d34f | Antony Chazapis | def attribute_get(self, serial, domain, keys=()): |
631 | 44ad5860 | Antony Chazapis | """Return a list of (key, value) pairs of the version specified by serial.
|
632 | 1f2d1b42 | Antony Chazapis | If keys is empty, return all attributes.
|
633 | 1f2d1b42 | Antony Chazapis | Othwerise, return only those specified.
|
634 | 1f2d1b42 | Antony Chazapis | """
|
635 | 2715ade4 | Sofia Papagiannaki | |
636 | 1f2d1b42 | Antony Chazapis | execute = self.execute
|
637 | 1f2d1b42 | Antony Chazapis | if keys:
|
638 | 1f2d1b42 | Antony Chazapis | marks = ','.join('?' for k in keys) |
639 | 1f2d1b42 | Antony Chazapis | q = ("select key, value from attributes "
|
640 | 4819d34f | Antony Chazapis | "where key in (%s) and serial = ? and domain = ?" % (marks,))
|
641 | 4819d34f | Antony Chazapis | execute(q, keys + (serial, domain)) |
642 | 1f2d1b42 | Antony Chazapis | else:
|
643 | 059857e2 | Antony Chazapis | q = "select key, value from attributes where serial = ? and domain = ?"
|
644 | 059857e2 | Antony Chazapis | execute(q, (serial, domain)) |
645 | 1f2d1b42 | Antony Chazapis | return self.fetchall() |
646 | 2715ade4 | Sofia Papagiannaki | |
647 | 4819d34f | Antony Chazapis | def attribute_set(self, serial, domain, items): |
648 | 44ad5860 | Antony Chazapis | """Set the attributes of the version specified by serial.
|
649 | 1f2d1b42 | Antony Chazapis | Receive attributes as an iterable of (key, value) pairs.
|
650 | 1f2d1b42 | Antony Chazapis | """
|
651 | 2715ade4 | Sofia Papagiannaki | |
652 | 4819d34f | Antony Chazapis | q = ("insert or replace into attributes (serial, domain, key, value) "
|
653 | 4819d34f | Antony Chazapis | "values (?, ?, ?, ?)")
|
654 | 4819d34f | Antony Chazapis | self.executemany(q, ((serial, domain, k, v) for k, v in items)) |
655 | 2715ade4 | Sofia Papagiannaki | |
656 | 4819d34f | Antony Chazapis | def attribute_del(self, serial, domain, keys=()): |
657 | 44ad5860 | Antony Chazapis | """Delete attributes of the version specified by serial.
|
658 | 1f2d1b42 | Antony Chazapis | If keys is empty, delete all attributes.
|
659 | 1f2d1b42 | Antony Chazapis | Otherwise delete those specified.
|
660 | 1f2d1b42 | Antony Chazapis | """
|
661 | 2715ade4 | Sofia Papagiannaki | |
662 | 1f2d1b42 | Antony Chazapis | if keys:
|
663 | 4819d34f | Antony Chazapis | q = "delete from attributes where serial = ? and domain = ? and key = ?"
|
664 | 4819d34f | Antony Chazapis | self.executemany(q, ((serial, domain, key) for key in keys)) |
665 | 1f2d1b42 | Antony Chazapis | else:
|
666 | 4819d34f | Antony Chazapis | q = "delete from attributes where serial = ? and domain = ?"
|
667 | 4819d34f | Antony Chazapis | self.execute(q, (serial, domain))
|
668 | 2715ade4 | Sofia Papagiannaki | |
669 | 44ad5860 | Antony Chazapis | def attribute_copy(self, source, dest): |
670 | 1f2d1b42 | Antony Chazapis | q = ("insert or replace into attributes "
|
671 | 4819d34f | Antony Chazapis | "select ?, domain, key, value from attributes "
|
672 | 1f2d1b42 | Antony Chazapis | "where serial = ?")
|
673 | 1f2d1b42 | Antony Chazapis | self.execute(q, (dest, source))
|
674 | 2715ade4 | Sofia Papagiannaki | |
675 | 4819d34f | Antony Chazapis | def _construct_filters(self, domain, filterq): |
676 | 4819d34f | Antony Chazapis | if not domain or not filterq: |
677 | 60b8a083 | Antony Chazapis | return None, None |
678 | 2715ade4 | Sofia Papagiannaki | |
679 | 95d47e1a | Antony Chazapis | subqlist = [] |
680 | 95d47e1a | Antony Chazapis | append = subqlist.append |
681 | 4819d34f | Antony Chazapis | included, excluded, opers = parse_filters(filterq) |
682 | 95d47e1a | Antony Chazapis | args = [] |
683 | 2715ade4 | Sofia Papagiannaki | |
684 | 95d47e1a | Antony Chazapis | if included:
|
685 | c7c0790f | chazapis | subq = "exists (select 1 from attributes where serial = v.serial and domain = ? and "
|
686 | c7c0790f | chazapis | subq += "(" + ' or '.join(('key = ?' for x in included)) + ")" |
687 | c7c0790f | chazapis | subq += ")"
|
688 | c7c0790f | chazapis | args += [domain] |
689 | 95d47e1a | Antony Chazapis | args += included |
690 | 95d47e1a | Antony Chazapis | append(subq) |
691 | 2715ade4 | Sofia Papagiannaki | |
692 | 95d47e1a | Antony Chazapis | if excluded:
|
693 | c7c0790f | chazapis | subq = "not exists (select 1 from attributes where serial = v.serial and domain = ? and "
|
694 | c7c0790f | chazapis | subq += "(" + ' or '.join(('key = ?' for x in excluded)) + ")" |
695 | c7c0790f | chazapis | subq += ")"
|
696 | c7c0790f | chazapis | args += [domain] |
697 | 95d47e1a | Antony Chazapis | args += excluded |
698 | 95d47e1a | Antony Chazapis | append(subq) |
699 | 2715ade4 | Sofia Papagiannaki | |
700 | 95d47e1a | Antony Chazapis | if opers:
|
701 | 95d47e1a | Antony Chazapis | for k, o, v in opers: |
702 | 6b2f11b4 | Antony Chazapis | subq = "exists (select 1 from attributes where serial = v.serial and domain = ? and "
|
703 | 6b2f11b4 | Antony Chazapis | subq += "key = ? and value %s ?" % (o,)
|
704 | 6b2f11b4 | Antony Chazapis | subq += ")"
|
705 | 6b2f11b4 | Antony Chazapis | args += [domain, k, v] |
706 | 6b2f11b4 | Antony Chazapis | append(subq) |
707 | 2715ade4 | Sofia Papagiannaki | |
708 | 95d47e1a | Antony Chazapis | if not subqlist: |
709 | 95d47e1a | Antony Chazapis | return None, None |
710 | 2715ade4 | Sofia Papagiannaki | |
711 | c7c0790f | chazapis | subq = ' and ' + ' and '.join(subqlist) |
712 | 2715ade4 | Sofia Papagiannaki | |
713 | 60b8a083 | Antony Chazapis | return subq, args
|
714 | 2715ade4 | Sofia Papagiannaki | |
715 | 60b8a083 | Antony Chazapis | def _construct_paths(self, pathq): |
716 | 60b8a083 | Antony Chazapis | if not pathq: |
717 | 60b8a083 | Antony Chazapis | return None, None |
718 | 2715ade4 | Sofia Papagiannaki | |
719 | d57eaad4 | Antony Chazapis | subqlist = [] |
720 | d57eaad4 | Antony Chazapis | args = [] |
721 | d57eaad4 | Antony Chazapis | for path, match in pathq: |
722 | d57eaad4 | Antony Chazapis | if match == MATCH_PREFIX:
|
723 | d57eaad4 | Antony Chazapis | subqlist.append("n.path like ? escape '\\'")
|
724 | d57eaad4 | Antony Chazapis | args.append(self.escape_like(path) + '%') |
725 | d57eaad4 | Antony Chazapis | elif match == MATCH_EXACT:
|
726 | d57eaad4 | Antony Chazapis | subqlist.append("n.path = ?")
|
727 | d57eaad4 | Antony Chazapis | args.append(path) |
728 | 2715ade4 | Sofia Papagiannaki | |
729 | d57eaad4 | Antony Chazapis | subq = ' and (' + ' or '.join(subqlist) + ')' |
730 | d57eaad4 | Antony Chazapis | args = tuple(args)
|
731 | 2715ade4 | Sofia Papagiannaki | |
732 | 60b8a083 | Antony Chazapis | return subq, args
|
733 | 2715ade4 | Sofia Papagiannaki | |
734 | 7ff57991 | Antony Chazapis | def _construct_size(self, sizeq): |
735 | 7ff57991 | Antony Chazapis | if not sizeq or len(sizeq) != 2: |
736 | 7ff57991 | Antony Chazapis | return None, None |
737 | 2715ade4 | Sofia Papagiannaki | |
738 | 7ff57991 | Antony Chazapis | subq = ''
|
739 | 7ff57991 | Antony Chazapis | args = [] |
740 | 7ff57991 | Antony Chazapis | if sizeq[0]: |
741 | 7ff57991 | Antony Chazapis | subq += " and v.size >= ?"
|
742 | 7ff57991 | Antony Chazapis | args += [sizeq[0]]
|
743 | 7ff57991 | Antony Chazapis | if sizeq[1]: |
744 | 7ff57991 | Antony Chazapis | subq += " and v.size < ?"
|
745 | 7ff57991 | Antony Chazapis | args += [sizeq[1]]
|
746 | 2715ade4 | Sofia Papagiannaki | |
747 | 7ff57991 | Antony Chazapis | return subq, args
|
748 | 2715ade4 | Sofia Papagiannaki | |
749 | 585b75e7 | Sofia Papagiannaki | def _construct_versions_nodes_latest_version_subquery(self, before=inf): |
750 | 585b75e7 | Sofia Papagiannaki | if before == inf:
|
751 | 585b75e7 | Sofia Papagiannaki | q = ("n.latest_version ")
|
752 | 585b75e7 | Sofia Papagiannaki | args = [] |
753 | 585b75e7 | Sofia Papagiannaki | else:
|
754 | 585b75e7 | Sofia Papagiannaki | q = ("(select max(serial) "
|
755 | 2715ade4 | Sofia Papagiannaki | "from versions "
|
756 | 2715ade4 | Sofia Papagiannaki | "where node = v.node and mtime < ?) ")
|
757 | 585b75e7 | Sofia Papagiannaki | args = [before] |
758 | 585b75e7 | Sofia Papagiannaki | return q, args
|
759 | 2715ade4 | Sofia Papagiannaki | |
760 | 585b75e7 | Sofia Papagiannaki | def _construct_latest_version_subquery(self, node=None, before=inf): |
761 | 585b75e7 | Sofia Papagiannaki | where_cond = "node = v.node"
|
762 | 585b75e7 | Sofia Papagiannaki | args = [] |
763 | 585b75e7 | Sofia Papagiannaki | if node:
|
764 | 585b75e7 | Sofia Papagiannaki | where_cond = "node = ? "
|
765 | 585b75e7 | Sofia Papagiannaki | args = [node] |
766 | 2715ade4 | Sofia Papagiannaki | |
767 | 585b75e7 | Sofia Papagiannaki | if before == inf:
|
768 | 585b75e7 | Sofia Papagiannaki | q = ("(select latest_version "
|
769 | 2715ade4 | Sofia Papagiannaki | "from nodes "
|
770 | 2715ade4 | Sofia Papagiannaki | "where %s) ")
|
771 | 585b75e7 | Sofia Papagiannaki | else:
|
772 | 585b75e7 | Sofia Papagiannaki | q = ("(select max(serial) "
|
773 | 2715ade4 | Sofia Papagiannaki | "from versions "
|
774 | 2715ade4 | Sofia Papagiannaki | "where %s and mtime < ?) ")
|
775 | 585b75e7 | Sofia Papagiannaki | args += [before] |
776 | 585b75e7 | Sofia Papagiannaki | return q % where_cond, args
|
777 | 2715ade4 | Sofia Papagiannaki | |
778 | 585b75e7 | Sofia Papagiannaki | def _construct_latest_versions_subquery(self, nodes=(), before=inf): |
779 | 585b75e7 | Sofia Papagiannaki | where_cond = ""
|
780 | 585b75e7 | Sofia Papagiannaki | args = [] |
781 | 585b75e7 | Sofia Papagiannaki | if nodes:
|
782 | 585b75e7 | Sofia Papagiannaki | where_cond = "node in (%s) " % ','.join('?' for node in nodes) |
783 | 585b75e7 | Sofia Papagiannaki | args = nodes |
784 | 2715ade4 | Sofia Papagiannaki | |
785 | 585b75e7 | Sofia Papagiannaki | if before == inf:
|
786 | 585b75e7 | Sofia Papagiannaki | q = ("(select latest_version "
|
787 | 2715ade4 | Sofia Papagiannaki | "from nodes "
|
788 | 2715ade4 | Sofia Papagiannaki | "where %s ) ")
|
789 | 585b75e7 | Sofia Papagiannaki | else:
|
790 | 585b75e7 | Sofia Papagiannaki | q = ("(select max(serial) "
|
791 | 2715ade4 | Sofia Papagiannaki | "from versions "
|
792 | 2715ade4 | Sofia Papagiannaki | "where %s and mtime < ? group by node) ")
|
793 | 585b75e7 | Sofia Papagiannaki | args += [before] |
794 | 585b75e7 | Sofia Papagiannaki | return q % where_cond, args
|
795 | 2715ade4 | Sofia Papagiannaki | |
796 | 4819d34f | Antony Chazapis | def latest_attribute_keys(self, parent, domain, before=inf, except_cluster=0, pathq=[]): |
797 | 676edf89 | Antony Chazapis | """Return a list with all keys pairs defined
|
798 | 676edf89 | Antony Chazapis | for all latest versions under parent that
|
799 | 676edf89 | Antony Chazapis | do not belong to the cluster.
|
800 | 676edf89 | Antony Chazapis | """
|
801 | 2715ade4 | Sofia Papagiannaki | |
802 | 676edf89 | Antony Chazapis | # TODO: Use another table to store before=inf results.
|
803 | 60b8a083 | Antony Chazapis | q = ("select distinct a.key "
|
804 | 676edf89 | Antony Chazapis | "from attributes a, versions v, nodes n "
|
805 | 585b75e7 | Sofia Papagiannaki | "where v.serial = %s "
|
806 | 676edf89 | Antony Chazapis | "and v.cluster != ? "
|
807 | 676edf89 | Antony Chazapis | "and v.node in (select node "
|
808 | 2715ade4 | Sofia Papagiannaki | "from nodes "
|
809 | 2715ade4 | Sofia Papagiannaki | "where parent = ?) "
|
810 | 676edf89 | Antony Chazapis | "and a.serial = v.serial "
|
811 | 4819d34f | Antony Chazapis | "and a.domain = ? "
|
812 | 676edf89 | Antony Chazapis | "and n.node = v.node")
|
813 | 2715ade4 | Sofia Papagiannaki | subq, subargs = self._construct_latest_version_subquery(
|
814 | 2715ade4 | Sofia Papagiannaki | node=None, before=before)
|
815 | 585b75e7 | Sofia Papagiannaki | args = subargs + [except_cluster, parent, domain] |
816 | 585b75e7 | Sofia Papagiannaki | q = q % subq |
817 | 60b8a083 | Antony Chazapis | subq, subargs = self._construct_paths(pathq)
|
818 | 60b8a083 | Antony Chazapis | if subq is not None: |
819 | 60b8a083 | Antony Chazapis | q += subq |
820 | 60b8a083 | Antony Chazapis | args += subargs |
821 | 676edf89 | Antony Chazapis | self.execute(q, args)
|
822 | 676edf89 | Antony Chazapis | return [r[0] for r in self.fetchall()] |
823 | 2715ade4 | Sofia Papagiannaki | |
824 | 60b8a083 | Antony Chazapis | def latest_version_list(self, parent, prefix='', delimiter=None, |
825 | 60b8a083 | Antony Chazapis | start='', limit=10000, before=inf, |
826 | 371d907a | Antony Chazapis | except_cluster=0, pathq=[], domain=None, |
827 | 371d907a | Antony Chazapis | filterq=[], sizeq=None, all_props=False): |
828 | 60b8a083 | Antony Chazapis | """Return a (list of (path, serial) tuples, list of common prefixes)
|
829 | 60b8a083 | Antony Chazapis | for the current versions of the paths with the given parent,
|
830 | 60b8a083 | Antony Chazapis | matching the following criteria.
|
831 | 2715ade4 | Sofia Papagiannaki |
|
832 | 60b8a083 | Antony Chazapis | The property tuple for a version is returned if all
|
833 | 60b8a083 | Antony Chazapis | of these conditions are true:
|
834 | 2715ade4 | Sofia Papagiannaki |
|
835 | 60b8a083 | Antony Chazapis | a. parent matches
|
836 | 2715ade4 | Sofia Papagiannaki |
|
837 | 60b8a083 | Antony Chazapis | b. path > start
|
838 | 2715ade4 | Sofia Papagiannaki |
|
839 | 60b8a083 | Antony Chazapis | c. path starts with prefix (and paths in pathq)
|
840 | 2715ade4 | Sofia Papagiannaki |
|
841 | 60b8a083 | Antony Chazapis | d. version is the max up to before
|
842 | 2715ade4 | Sofia Papagiannaki |
|
843 | 60b8a083 | Antony Chazapis | e. version is not in cluster
|
844 | 2715ade4 | Sofia Papagiannaki |
|
845 | 60b8a083 | Antony Chazapis | f. the path does not have the delimiter occuring
|
846 | 60b8a083 | Antony Chazapis | after the prefix, or ends with the delimiter
|
847 | 2715ade4 | Sofia Papagiannaki |
|
848 | 60b8a083 | Antony Chazapis | g. serial matches the attribute filter query.
|
849 | 2715ade4 | Sofia Papagiannaki |
|
850 | 60b8a083 | Antony Chazapis | A filter query is a comma-separated list of
|
851 | 60b8a083 | Antony Chazapis | terms in one of these three forms:
|
852 | 2715ade4 | Sofia Papagiannaki |
|
853 | 60b8a083 | Antony Chazapis | key
|
854 | 60b8a083 | Antony Chazapis | an attribute with this key must exist
|
855 | 2715ade4 | Sofia Papagiannaki |
|
856 | 60b8a083 | Antony Chazapis | !key
|
857 | 60b8a083 | Antony Chazapis | an attribute with this key must not exist
|
858 | 2715ade4 | Sofia Papagiannaki |
|
859 | 60b8a083 | Antony Chazapis | key ?op value
|
860 | 60b8a083 | Antony Chazapis | the attribute with this key satisfies the value
|
861 | 1713c946 | Antony Chazapis | where ?op is one of =, != <=, >=, <, >.
|
862 | 2715ade4 | Sofia Papagiannaki |
|
863 | 7ff57991 | Antony Chazapis | h. the size is in the range set by sizeq
|
864 | 2715ade4 | Sofia Papagiannaki |
|
865 | 60b8a083 | Antony Chazapis | The list of common prefixes includes the prefixes
|
866 | 60b8a083 | Antony Chazapis | matching up to the first delimiter after prefix,
|
867 | 60b8a083 | Antony Chazapis | and are reported only once, as "virtual directories".
|
868 | 60b8a083 | Antony Chazapis | The delimiter is included in the prefixes.
|
869 | 2715ade4 | Sofia Papagiannaki |
|
870 | 60b8a083 | Antony Chazapis | If arguments are None, then the corresponding matching rule
|
871 | 60b8a083 | Antony Chazapis | will always match.
|
872 | 2715ade4 | Sofia Papagiannaki |
|
873 | 60b8a083 | Antony Chazapis | Limit applies to the first list of tuples returned.
|
874 | 2715ade4 | Sofia Papagiannaki |
|
875 | 371d907a | Antony Chazapis | If all_props is True, return all properties after path, not just serial.
|
876 | 60b8a083 | Antony Chazapis | """
|
877 | 2715ade4 | Sofia Papagiannaki | |
878 | 60b8a083 | Antony Chazapis | execute = self.execute
|
879 | 2715ade4 | Sofia Papagiannaki | |
880 | 60b8a083 | Antony Chazapis | if not start or start < prefix: |
881 | 60b8a083 | Antony Chazapis | start = strprevling(prefix) |
882 | 60b8a083 | Antony Chazapis | nextling = strnextling(prefix) |
883 | 2715ade4 | Sofia Papagiannaki | |
884 | 371d907a | Antony Chazapis | q = ("select distinct n.path, %s "
|
885 | c7c0790f | chazapis | "from versions v, nodes n "
|
886 | 585b75e7 | Sofia Papagiannaki | "where v.serial = %s "
|
887 | 60b8a083 | Antony Chazapis | "and v.cluster != ? "
|
888 | 60b8a083 | Antony Chazapis | "and v.node in (select node "
|
889 | 2715ade4 | Sofia Papagiannaki | "from nodes "
|
890 | 2715ade4 | Sofia Papagiannaki | "where parent = ?) "
|
891 | 60b8a083 | Antony Chazapis | "and n.node = v.node "
|
892 | 60b8a083 | Antony Chazapis | "and n.path > ? and n.path < ?")
|
893 | 2715ade4 | Sofia Papagiannaki | subq, args = self._construct_versions_nodes_latest_version_subquery(
|
894 | 2715ade4 | Sofia Papagiannaki | before) |
895 | 371d907a | Antony Chazapis | if not all_props: |
896 | 585b75e7 | Sofia Papagiannaki | q = q % ("v.serial", subq)
|
897 | 371d907a | Antony Chazapis | else:
|
898 | 585b75e7 | Sofia Papagiannaki | q = q % ("v.serial, v.node, v.hash, v.size, v.type, v.source, v.mtime, v.muser, v.uuid, v.checksum, v.cluster", subq)
|
899 | 585b75e7 | Sofia Papagiannaki | args += [except_cluster, parent, start, nextling] |
900 | 585b75e7 | Sofia Papagiannaki | start_index = len(args) - 2 |
901 | 2715ade4 | Sofia Papagiannaki | |
902 | 60b8a083 | Antony Chazapis | subq, subargs = self._construct_paths(pathq)
|
903 | 60b8a083 | Antony Chazapis | if subq is not None: |
904 | 60b8a083 | Antony Chazapis | q += subq |
905 | 60b8a083 | Antony Chazapis | args += subargs |
906 | 7ff57991 | Antony Chazapis | subq, subargs = self._construct_size(sizeq)
|
907 | 7ff57991 | Antony Chazapis | if subq is not None: |
908 | 7ff57991 | Antony Chazapis | q += subq |
909 | 7ff57991 | Antony Chazapis | args += subargs |
910 | 4819d34f | Antony Chazapis | subq, subargs = self._construct_filters(domain, filterq)
|
911 | 60b8a083 | Antony Chazapis | if subq is not None: |
912 | 60b8a083 | Antony Chazapis | q += subq |
913 | 60b8a083 | Antony Chazapis | args += subargs |
914 | 60b8a083 | Antony Chazapis | else:
|
915 | 60b8a083 | Antony Chazapis | q = q.replace("attributes a, ", "") |
916 | 60b8a083 | Antony Chazapis | q = q.replace("and a.serial = v.serial ", "") |
917 | 60b8a083 | Antony Chazapis | q += " order by n.path"
|
918 | 2715ade4 | Sofia Papagiannaki | |
919 | 60b8a083 | Antony Chazapis | if not delimiter: |
920 | 60b8a083 | Antony Chazapis | q += " limit ?"
|
921 | 60b8a083 | Antony Chazapis | args.append(limit) |
922 | 60b8a083 | Antony Chazapis | execute(q, args) |
923 | 60b8a083 | Antony Chazapis | return self.fetchall(), () |
924 | 2715ade4 | Sofia Papagiannaki | |
925 | 60b8a083 | Antony Chazapis | pfz = len(prefix)
|
926 | 60b8a083 | Antony Chazapis | dz = len(delimiter)
|
927 | 60b8a083 | Antony Chazapis | count = 0
|
928 | 60b8a083 | Antony Chazapis | fetchone = self.fetchone
|
929 | 60b8a083 | Antony Chazapis | prefixes = [] |
930 | 60b8a083 | Antony Chazapis | pappend = prefixes.append |
931 | 60b8a083 | Antony Chazapis | matches = [] |
932 | 60b8a083 | Antony Chazapis | mappend = matches.append |
933 | 2715ade4 | Sofia Papagiannaki | |
934 | 60b8a083 | Antony Chazapis | execute(q, args) |
935 | 60b8a083 | Antony Chazapis | while True: |
936 | 60b8a083 | Antony Chazapis | props = fetchone() |
937 | 60b8a083 | Antony Chazapis | if props is None: |
938 | 60b8a083 | Antony Chazapis | break
|
939 | 371d907a | Antony Chazapis | path = props[0]
|
940 | 371d907a | Antony Chazapis | serial = props[1]
|
941 | 60b8a083 | Antony Chazapis | idx = path.find(delimiter, pfz) |
942 | 2715ade4 | Sofia Papagiannaki | |
943 | 60b8a083 | Antony Chazapis | if idx < 0: |
944 | 60b8a083 | Antony Chazapis | mappend(props) |
945 | 60b8a083 | Antony Chazapis | count += 1
|
946 | 60b8a083 | Antony Chazapis | if count >= limit:
|
947 | 60b8a083 | Antony Chazapis | break
|
948 | 60b8a083 | Antony Chazapis | continue
|
949 | 2715ade4 | Sofia Papagiannaki | |
950 | 60b8a083 | Antony Chazapis | if idx + dz == len(path): |
951 | 60b8a083 | Antony Chazapis | mappend(props) |
952 | 60b8a083 | Antony Chazapis | count += 1
|
953 | 2715ade4 | Sofia Papagiannaki | continue # Get one more, in case there is a path. |
954 | 4cc00e08 | Antony Chazapis | pf = path[:idx + dz] |
955 | 4cc00e08 | Antony Chazapis | pappend(pf) |
956 | 2715ade4 | Sofia Papagiannaki | if count >= limit:
|
957 | 60b8a083 | Antony Chazapis | break
|
958 | 2715ade4 | Sofia Papagiannaki | |
959 | 2715ade4 | Sofia Papagiannaki | args[start_index] = strnextling(pf) # New start.
|
960 | 60b8a083 | Antony Chazapis | execute(q, args) |
961 | 2715ade4 | Sofia Papagiannaki | |
962 | 60b8a083 | Antony Chazapis | return matches, prefixes
|
963 | 2715ade4 | Sofia Papagiannaki | |
964 | 37bee317 | Antony Chazapis | def latest_uuid(self, uuid): |
965 | 37bee317 | Antony Chazapis | """Return a (path, serial) tuple, for the latest version of the given uuid."""
|
966 | 2715ade4 | Sofia Papagiannaki | |
967 | 37bee317 | Antony Chazapis | q = ("select n.path, v.serial "
|
968 | 37bee317 | Antony Chazapis | "from versions v, nodes n "
|
969 | 37bee317 | Antony Chazapis | "where v.serial = (select max(serial) "
|
970 | 2715ade4 | Sofia Papagiannaki | "from versions "
|
971 | 2715ade4 | Sofia Papagiannaki | "where uuid = ?) "
|
972 | 37bee317 | Antony Chazapis | "and n.node = v.node")
|
973 | 37bee317 | Antony Chazapis | self.execute(q, (uuid,))
|
974 | 37bee317 | Antony Chazapis | return self.fetchone() |