root / snf-app / synnefo / plankton / backend.py @ bfd9f988
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1 | c34de90f | Giorgos Verigakis | # Copyright 2011 GRNET S.A. All rights reserved.
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2 | c34de90f | Giorgos Verigakis | #
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3 | c34de90f | Giorgos Verigakis | # Redistribution and use in source and binary forms, with or
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4 | c34de90f | Giorgos Verigakis | # without modification, are permitted provided that the following
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5 | c34de90f | Giorgos Verigakis | # conditions are met:
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6 | c34de90f | Giorgos Verigakis | #
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7 | c34de90f | Giorgos Verigakis | # 1. Redistributions of source code must retain the above
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8 | c34de90f | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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9 | c34de90f | Giorgos Verigakis | # disclaimer.
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10 | c34de90f | Giorgos Verigakis | #
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11 | c34de90f | Giorgos Verigakis | # 2. Redistributions in binary form must reproduce the above
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12 | c34de90f | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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13 | c34de90f | Giorgos Verigakis | # disclaimer in the documentation and/or other materials
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14 | c34de90f | Giorgos Verigakis | # provided with the distribution.
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15 | c34de90f | Giorgos Verigakis | #
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16 | c34de90f | Giorgos Verigakis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | c34de90f | Giorgos Verigakis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | c34de90f | Giorgos Verigakis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | c34de90f | Giorgos Verigakis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | c34de90f | Giorgos Verigakis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | c34de90f | Giorgos Verigakis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | c34de90f | Giorgos Verigakis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | c34de90f | Giorgos Verigakis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | c34de90f | Giorgos Verigakis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | c34de90f | Giorgos Verigakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | c34de90f | Giorgos Verigakis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | c34de90f | Giorgos Verigakis | # POSSIBILITY OF SUCH DAMAGE.
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28 | c34de90f | Giorgos Verigakis | #
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29 | c34de90f | Giorgos Verigakis | # The views and conclusions contained in the software and
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30 | c34de90f | Giorgos Verigakis | # documentation are those of the authors and should not be
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31 | c34de90f | Giorgos Verigakis | # interpreted as representing official policies, either expressed
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32 | c34de90f | Giorgos Verigakis | # or implied, of GRNET S.A.
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33 | c34de90f | Giorgos Verigakis | |
34 | f5afd99b | Giorgos Verigakis | """
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35 | bfd9f988 | Giorgos Verigakis | The Plankton attributes are the following:
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36 | 0a72907b | Giorgos Verigakis | - checksum: the 'hash' meta
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37 | 7bd1d3b5 | Giorgos Verigakis | - container_format: stored as a user meta
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38 | 0a72907b | Giorgos Verigakis | - created_at: the 'modified' meta of the first version
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39 | 0a72907b | Giorgos Verigakis | - deleted_at: the timestamp of the last version
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40 | 7bd1d3b5 | Giorgos Verigakis | - disk_format: stored as a user meta
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41 | 0a72907b | Giorgos Verigakis | - id: the 'uuid' meta
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42 | f5afd99b | Giorgos Verigakis | - is_public: True if there is a * entry for the read permission
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43 | 0a72907b | Giorgos Verigakis | - location: generated based on the file's path
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44 | 7bd1d3b5 | Giorgos Verigakis | - name: stored as a user meta
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45 | 0a72907b | Giorgos Verigakis | - owner: the file's account
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46 | 7bd1d3b5 | Giorgos Verigakis | - properties: stored as user meta prefixed with PROPERTY_PREFIX
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47 | 0a72907b | Giorgos Verigakis | - size: the 'bytes' meta
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48 | 7bd1d3b5 | Giorgos Verigakis | - status: stored as a system meta
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49 | 7bd1d3b5 | Giorgos Verigakis | - store: is always 'pithos'
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50 | 0a72907b | Giorgos Verigakis | - updated_at: the 'modified' meta
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51 | f5afd99b | Giorgos Verigakis | """
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52 | f5afd99b | Giorgos Verigakis | |
53 | c34de90f | Giorgos Verigakis | import json |
54 | c23d211a | Giorgos Verigakis | import warnings |
55 | c34de90f | Giorgos Verigakis | |
56 | c34de90f | Giorgos Verigakis | from operator import itemgetter |
57 | c34de90f | Giorgos Verigakis | from time import gmtime, strftime, time |
58 | c34de90f | Giorgos Verigakis | |
59 | c34de90f | Giorgos Verigakis | from django.conf import settings |
60 | c34de90f | Giorgos Verigakis | |
61 | c34de90f | Giorgos Verigakis | from pithos.backends import connect_backend |
62 | c34de90f | Giorgos Verigakis | from pithos.backends.base import NotAllowedError |
63 | c34de90f | Giorgos Verigakis | |
64 | c34de90f | Giorgos Verigakis | |
65 | 0a72907b | Giorgos Verigakis | PLANKTON_DOMAIN = 'plankton'
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66 | bfd9f988 | Giorgos Verigakis | PLANKTON_PREFIX = 'plankton:'
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67 | 7bd1d3b5 | Giorgos Verigakis | PROPERTY_PREFIX = 'property:'
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68 | 7bd1d3b5 | Giorgos Verigakis | |
69 | bfd9f988 | Giorgos Verigakis | PLANKTON_META = ('container_format', 'disk_format', 'name', 'properties', |
70 | bfd9f988 | Giorgos Verigakis | 'status')
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71 | c34de90f | Giorgos Verigakis | |
72 | c34de90f | Giorgos Verigakis | |
73 | 7bd1d3b5 | Giorgos Verigakis | def get_location(account, container, object): |
74 | 7bd1d3b5 | Giorgos Verigakis | assert '/' not in account, "Invalid account" |
75 | 7bd1d3b5 | Giorgos Verigakis | assert '/' not in container, "Invalid container" |
76 | 7bd1d3b5 | Giorgos Verigakis | return 'pithos://%s/%s/%s' % (account, container, object) |
77 | 7bd1d3b5 | Giorgos Verigakis | |
78 | 7bd1d3b5 | Giorgos Verigakis | def split_location(location): |
79 | 7bd1d3b5 | Giorgos Verigakis | """Returns (accout, container, object) from a location string"""
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80 | 7bd1d3b5 | Giorgos Verigakis | t = location.split('/', 4) |
81 | 7bd1d3b5 | Giorgos Verigakis | assert len(t) == 5, "Invalid location" |
82 | 7bd1d3b5 | Giorgos Verigakis | return t[2:5] |
83 | 7bd1d3b5 | Giorgos Verigakis | |
84 | 7bd1d3b5 | Giorgos Verigakis | |
85 | 0a72907b | Giorgos Verigakis | class BackendException(Exception): |
86 | 0a72907b | Giorgos Verigakis | pass
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87 | c34de90f | Giorgos Verigakis | |
88 | c34de90f | Giorgos Verigakis | |
89 | f5afd99b | Giorgos Verigakis | class ImageBackend(object): |
90 | f5afd99b | Giorgos Verigakis | """A wrapper arround the pithos backend to simplify image handling."""
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91 | c34de90f | Giorgos Verigakis | |
92 | c34de90f | Giorgos Verigakis | def __init__(self, user): |
93 | c34de90f | Giorgos Verigakis | self.user = user
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94 | c23d211a | Giorgos Verigakis | |
95 | c23d211a | Giorgos Verigakis | original_filters = warnings.filters |
96 | c23d211a | Giorgos Verigakis | warnings.simplefilter('ignore') # Suppress SQLAlchemy warnings |
97 | bfd9f988 | Giorgos Verigakis | db_connection = settings.BACKEND_DB_CONNECTION |
98 | bfd9f988 | Giorgos Verigakis | block_path = settings.BACKEND_BLOCK_PATH |
99 | bfd9f988 | Giorgos Verigakis | self.backend = connect_backend(db_connection=db_connection,
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100 | bfd9f988 | Giorgos Verigakis | block_path=block_path) |
101 | c23d211a | Giorgos Verigakis | warnings.filters = original_filters # Restore warnings
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102 | c34de90f | Giorgos Verigakis | |
103 | 7bd1d3b5 | Giorgos Verigakis | def _get_image(self, location): |
104 | f5afd99b | Giorgos Verigakis | def format_timestamp(t): |
105 | f5afd99b | Giorgos Verigakis | return strftime('%Y-%m-%d %H:%M:%S', gmtime(t)) |
106 | c34de90f | Giorgos Verigakis | |
107 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
108 | 7bd1d3b5 | Giorgos Verigakis | |
109 | 7bd1d3b5 | Giorgos Verigakis | try:
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110 | 7bd1d3b5 | Giorgos Verigakis | versions = self.backend.list_versions(self.user, account, |
111 | 7bd1d3b5 | Giorgos Verigakis | container, object)
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112 | 7bd1d3b5 | Giorgos Verigakis | except NameError: |
113 | 7bd1d3b5 | Giorgos Verigakis | return None |
114 | 7bd1d3b5 | Giorgos Verigakis | |
115 | 7bd1d3b5 | Giorgos Verigakis | image = {} |
116 | 7bd1d3b5 | Giorgos Verigakis | |
117 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location)
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118 | 7bd1d3b5 | Giorgos Verigakis | if meta:
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119 | 7bd1d3b5 | Giorgos Verigakis | image['deleted_at'] = '' |
120 | 7bd1d3b5 | Giorgos Verigakis | else:
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121 | 7bd1d3b5 | Giorgos Verigakis | # Object was deleted, use the latest version
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122 | 7bd1d3b5 | Giorgos Verigakis | version, timestamp = versions[-1]
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123 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location, version)
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124 | 7bd1d3b5 | Giorgos Verigakis | image['deleted_at'] = format_timestamp(timestamp)
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125 | 7bd1d3b5 | Giorgos Verigakis | |
126 | 0a72907b | Giorgos Verigakis | if PLANKTON_PREFIX + 'name' not in meta: |
127 | 0a72907b | Giorgos Verigakis | return None # Not a Plankton image |
128 | 0a72907b | Giorgos Verigakis | |
129 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
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130 | 7bd1d3b5 | Giorgos Verigakis | |
131 | 0a72907b | Giorgos Verigakis | image['checksum'] = meta['hash'] |
132 | 7bd1d3b5 | Giorgos Verigakis | image['created_at'] = format_timestamp(versions[0][1]) |
133 | 0a72907b | Giorgos Verigakis | image['id'] = meta['uuid'] |
134 | f5afd99b | Giorgos Verigakis | image['is_public'] = '*' in permissions.get('read', []) |
135 | 7bd1d3b5 | Giorgos Verigakis | image['location'] = location
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136 | 7bd1d3b5 | Giorgos Verigakis | image['owner'] = account
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137 | 0a72907b | Giorgos Verigakis | image['size'] = meta['bytes'] |
138 | 7bd1d3b5 | Giorgos Verigakis | image['store'] = 'pithos' |
139 | 0a72907b | Giorgos Verigakis | image['updated_at'] = format_timestamp(meta['modified']) |
140 | 7bd1d3b5 | Giorgos Verigakis | image['properties'] = {}
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141 | c34de90f | Giorgos Verigakis | |
142 | 7bd1d3b5 | Giorgos Verigakis | for key, val in meta.items(): |
143 | bfd9f988 | Giorgos Verigakis | if not key.startswith(PLANKTON_PREFIX): |
144 | bfd9f988 | Giorgos Verigakis | continue
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145 | bfd9f988 | Giorgos Verigakis | key = key[len(PLANKTON_PREFIX):]
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146 | bfd9f988 | Giorgos Verigakis | if key == 'properties': |
147 | bfd9f988 | Giorgos Verigakis | val = json.loads(val) |
148 | bfd9f988 | Giorgos Verigakis | if key in PLANKTON_META: |
149 | 7bd1d3b5 | Giorgos Verigakis | image[key] = val |
150 | 7bd1d3b5 | Giorgos Verigakis | |
151 | 0a72907b | Giorgos Verigakis | return image
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152 | 15137c54 | Giorgos Verigakis | |
153 | bfd9f988 | Giorgos Verigakis | def _get_meta(self, location, version=None): |
154 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
155 | 7bd1d3b5 | Giorgos Verigakis | try:
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156 | bfd9f988 | Giorgos Verigakis | return self.backend.get_object_meta(self.user, account, container, |
157 | bfd9f988 | Giorgos Verigakis | object, PLANKTON_DOMAIN, version)
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158 | 7bd1d3b5 | Giorgos Verigakis | except NameError: |
159 | 7bd1d3b5 | Giorgos Verigakis | return None |
160 | 7bd1d3b5 | Giorgos Verigakis | |
161 | 7bd1d3b5 | Giorgos Verigakis | def _get_permissions(self, location): |
162 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
163 | 15137c54 | Giorgos Verigakis | action, path, permissions = self.backend.get_object_permissions(
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164 | 7bd1d3b5 | Giorgos Verigakis | self.user, account, container, object) |
165 | f5afd99b | Giorgos Verigakis | return permissions
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166 | 15137c54 | Giorgos Verigakis | |
167 | c23d211a | Giorgos Verigakis | def _store(self, f, size=None): |
168 | 7bd1d3b5 | Giorgos Verigakis | """Breaks data into blocks and stores them in the backend"""
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169 | f5afd99b | Giorgos Verigakis | |
170 | c23d211a | Giorgos Verigakis | bytes = 0
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171 | f5afd99b | Giorgos Verigakis | hashmap = [] |
172 | 7bd1d3b5 | Giorgos Verigakis | backend = self.backend
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173 | c23d211a | Giorgos Verigakis | blocksize = backend.block_size |
174 | f5afd99b | Giorgos Verigakis | |
175 | c23d211a | Giorgos Verigakis | data = f.read(blocksize) |
176 | 7bd1d3b5 | Giorgos Verigakis | while data:
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177 | c23d211a | Giorgos Verigakis | hash = backend.put_block(data) |
178 | f5afd99b | Giorgos Verigakis | hashmap.append(hash)
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179 | c23d211a | Giorgos Verigakis | bytes += len(data) |
180 | c23d211a | Giorgos Verigakis | data = f.read(blocksize) |
181 | f5afd99b | Giorgos Verigakis | |
182 | c23d211a | Giorgos Verigakis | if size and size != bytes: |
183 | c23d211a | Giorgos Verigakis | raise BackendException("Invalid size") |
184 | c23d211a | Giorgos Verigakis | |
185 | c23d211a | Giorgos Verigakis | return hashmap, bytes |
186 | 7bd1d3b5 | Giorgos Verigakis | |
187 | 7bd1d3b5 | Giorgos Verigakis | def _update(self, location, size, hashmap, meta, permissions): |
188 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
189 | 7bd1d3b5 | Giorgos Verigakis | self.backend.update_object_hashmap(self.user, account, container, |
190 | 0a72907b | Giorgos Verigakis | object, size, hashmap, PLANKTON_DOMAIN,
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191 | 0a72907b | Giorgos Verigakis | permissions=permissions) |
192 | 0a72907b | Giorgos Verigakis | self._update_meta(location, meta, replace=True) |
193 | f5afd99b | Giorgos Verigakis | |
194 | 0a72907b | Giorgos Verigakis | def _update_meta(self, location, meta, replace=False): |
195 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
196 | bfd9f988 | Giorgos Verigakis | |
197 | bfd9f988 | Giorgos Verigakis | prefixed = {} |
198 | 0a72907b | Giorgos Verigakis | for key, val in meta.items(): |
199 | bfd9f988 | Giorgos Verigakis | if key == 'properties': |
200 | bfd9f988 | Giorgos Verigakis | val = json.dumps(val) |
201 | bfd9f988 | Giorgos Verigakis | if key in PLANKTON_META: |
202 | bfd9f988 | Giorgos Verigakis | prefixed[PLANKTON_PREFIX + key] = val |
203 | bfd9f988 | Giorgos Verigakis | |
204 | bfd9f988 | Giorgos Verigakis | self.backend.update_object_meta(self.user, account, container, object, |
205 | bfd9f988 | Giorgos Verigakis | PLANKTON_DOMAIN, prefixed, replace) |
206 | 7bd1d3b5 | Giorgos Verigakis | |
207 | 7bd1d3b5 | Giorgos Verigakis | def _update_permissions(self, location, permissions): |
208 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
209 | 7bd1d3b5 | Giorgos Verigakis | self.backend.update_object_permissions(self.user, account, container, |
210 | 7bd1d3b5 | Giorgos Verigakis | object, permissions)
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211 | f5afd99b | Giorgos Verigakis | |
212 | f5afd99b | Giorgos Verigakis | def add_user(self, image_id, user): |
213 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
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214 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
215 | f5afd99b | Giorgos Verigakis | |
216 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
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217 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
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218 | f5afd99b | Giorgos Verigakis | read = set(permissions.get('read', [])) |
219 | f5afd99b | Giorgos Verigakis | read.add(user) |
220 | f5afd99b | Giorgos Verigakis | permissions['read'] = list(read) |
221 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
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222 | f5afd99b | Giorgos Verigakis | |
223 | f5afd99b | Giorgos Verigakis | def close(self): |
224 | f5afd99b | Giorgos Verigakis | self.backend.close()
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225 | c34de90f | Giorgos Verigakis | |
226 | 7bd1d3b5 | Giorgos Verigakis | def get_data(self, location): |
227 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
228 | 7bd1d3b5 | Giorgos Verigakis | size, hashmap = self.backend.get_object_hashmap(self.user, account, |
229 | 7bd1d3b5 | Giorgos Verigakis | container, object)
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230 | f5afd99b | Giorgos Verigakis | data = ''.join(self.backend.get_block(hash) for hash in hashmap) |
231 | f5afd99b | Giorgos Verigakis | assert len(data) == size |
232 | f5afd99b | Giorgos Verigakis | return data
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233 | f5afd99b | Giorgos Verigakis | |
234 | bfd9f988 | Giorgos Verigakis | def get_image(self, image_id): |
235 | 0a72907b | Giorgos Verigakis | try:
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236 | 0a72907b | Giorgos Verigakis | account, container, object = self.backend.get_uuid(self.user, |
237 | 0a72907b | Giorgos Verigakis | image_id) |
238 | 0a72907b | Giorgos Verigakis | except NameError: |
239 | 0a72907b | Giorgos Verigakis | return None |
240 | 0a72907b | Giorgos Verigakis | |
241 | 0a72907b | Giorgos Verigakis | location = get_location(account, container, object)
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242 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
243 | f5afd99b | Giorgos Verigakis | |
244 | f5afd99b | Giorgos Verigakis | def iter_public(self, filters): |
245 | 0a72907b | Giorgos Verigakis | backend = self.backend
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246 | 0a72907b | Giorgos Verigakis | |
247 | bfd9f988 | Giorgos Verigakis | keys = [PLANKTON_PREFIX + 'name']
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248 | f5afd99b | Giorgos Verigakis | for key, val in filters.items(): |
249 | 0a72907b | Giorgos Verigakis | if key == 'size_min': |
250 | bfd9f988 | Giorgos Verigakis | filter = 'bytes >= %d' % int(val) |
251 | 0a72907b | Giorgos Verigakis | elif key == 'size_max': |
252 | bfd9f988 | Giorgos Verigakis | filter = 'bytes <= %d' % int(val) |
253 | f5afd99b | Giorgos Verigakis | else:
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254 | 0a72907b | Giorgos Verigakis | filter = '%s = %s' % (PLANKTON_PREFIX + key, val)
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255 | bfd9f988 | Giorgos Verigakis | keys.append(filter)
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256 | 0a72907b | Giorgos Verigakis | |
257 | 0a72907b | Giorgos Verigakis | for account in backend.list_accounts(None): |
258 | 0a72907b | Giorgos Verigakis | for container in backend.list_containers(None, account, |
259 | 0a72907b | Giorgos Verigakis | shared=True):
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260 | 0a72907b | Giorgos Verigakis | for path, version_id in backend.list_objects(None, account, |
261 | 0a72907b | Giorgos Verigakis | container, prefix='', delimiter='/', |
262 | bfd9f988 | Giorgos Verigakis | domain=PLANKTON_DOMAIN, |
263 | 0a72907b | Giorgos Verigakis | keys=keys, shared=True):
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264 | 0a72907b | Giorgos Verigakis | location = get_location(account, container, path) |
265 | 0a72907b | Giorgos Verigakis | image = self._get_image(location)
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266 | 0a72907b | Giorgos Verigakis | if image:
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267 | 0a72907b | Giorgos Verigakis | yield image
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268 | f5afd99b | Giorgos Verigakis | |
269 | 8482ef55 | Giorgos Verigakis | def iter_shared(self, member): |
270 | 8482ef55 | Giorgos Verigakis | """Iterate over image ids shared to this member"""
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271 | 8482ef55 | Giorgos Verigakis | |
272 | 0a72907b | Giorgos Verigakis | backend = self.backend
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273 | 8482ef55 | Giorgos Verigakis | |
274 | 0a72907b | Giorgos Verigakis | # To get the list we connect as member and get the list shared by us
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275 | 0a72907b | Giorgos Verigakis | for container in backend.list_containers(member, self.user): |
276 | bfd9f988 | Giorgos Verigakis | for object, version_id in backend.list_objects(member, self.user, |
277 | bfd9f988 | Giorgos Verigakis | container, prefix='', delimiter='/', |
278 | bfd9f988 | Giorgos Verigakis | domain=PLANKTON_DOMAIN): |
279 | 0a72907b | Giorgos Verigakis | try:
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280 | bfd9f988 | Giorgos Verigakis | location = get_location(self.user, container, object) |
281 | bfd9f988 | Giorgos Verigakis | meta = backend.get_object_meta(member, self.user,
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282 | bfd9f988 | Giorgos Verigakis | container, object, PLANKTON_DOMAIN)
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283 | 0a72907b | Giorgos Verigakis | if PLANKTON_PREFIX + 'name' in meta: |
284 | 0a72907b | Giorgos Verigakis | yield meta['uuid'] |
285 | 0a72907b | Giorgos Verigakis | except NotAllowedError:
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286 | 0a72907b | Giorgos Verigakis | continue
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287 | f5afd99b | Giorgos Verigakis | |
288 | 7bd1d3b5 | Giorgos Verigakis | def list_public(self, filters, params): |
289 | f5afd99b | Giorgos Verigakis | images = list(self.iter_public(filters)) |
290 | 7bd1d3b5 | Giorgos Verigakis | key = itemgetter(params.get('sort_key', 'created_at')) |
291 | 7bd1d3b5 | Giorgos Verigakis | reverse = params.get('sort_dir', 'desc') == 'desc' |
292 | f5afd99b | Giorgos Verigakis | images.sort(key=key, reverse=reverse) |
293 | f5afd99b | Giorgos Verigakis | return images
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294 | f5afd99b | Giorgos Verigakis | |
295 | f5afd99b | Giorgos Verigakis | def list_users(self, image_id): |
296 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
297 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
298 | c34de90f | Giorgos Verigakis | |
299 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(image['location']) |
300 | f5afd99b | Giorgos Verigakis | return [user for user in permissions.get('read', []) if user != '*'] |
301 | c34de90f | Giorgos Verigakis | |
302 | c23d211a | Giorgos Verigakis | def put(self, name, f, params): |
303 | 7bd1d3b5 | Giorgos Verigakis | assert 'checksum' not in params, "Passing a checksum is not supported" |
304 | 7bd1d3b5 | Giorgos Verigakis | assert 'id' not in params, "Passing an ID is not supported" |
305 | 7bd1d3b5 | Giorgos Verigakis | assert params.pop('store', 'pithos') == 'pithos', "Invalid store" |
306 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('disk_format', |
307 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_DISK_FORMAT) in \
|
308 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_DISK_FORMATS, "Invalid disk_format"
|
309 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('container_format', |
310 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_CONTAINER_FORMAT) in \
|
311 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_CONTAINER_FORMATS, "Invalid container_format"
|
312 | c34de90f | Giorgos Verigakis | |
313 | bfd9f988 | Giorgos Verigakis | container = settings.DEFAULT_PLANKTON_CONTAINER |
314 | c23d211a | Giorgos Verigakis | filename = params.pop('filename', name)
|
315 | bfd9f988 | Giorgos Verigakis | location = 'pithos://%s/%s/%s' % (self.user, container, filename) |
316 | f5afd99b | Giorgos Verigakis | is_public = params.pop('is_public', False) |
317 | 921355f8 | Giorgos Verigakis | permissions = {'read': ['*']} if is_public else {} |
318 | c23d211a | Giorgos Verigakis | size = params.pop('size', None) |
319 | c34de90f | Giorgos Verigakis | |
320 | c23d211a | Giorgos Verigakis | hashmap, size = self._store(f, size)
|
321 | c34de90f | Giorgos Verigakis | |
322 | 7bd1d3b5 | Giorgos Verigakis | meta = {} |
323 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
324 | 0a72907b | Giorgos Verigakis | meta.update(name=name, status='available', **params)
|
325 | c34de90f | Giorgos Verigakis | |
326 | 7bd1d3b5 | Giorgos Verigakis | self._update(location, size, hashmap, meta, permissions)
|
327 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
328 | c34de90f | Giorgos Verigakis | |
329 | f5afd99b | Giorgos Verigakis | def register(self, name, location, params): |
330 | 7bd1d3b5 | Giorgos Verigakis | assert 'id' not in params, "Passing an ID is not supported" |
331 | 7bd1d3b5 | Giorgos Verigakis | assert location.startswith('pithos://'), "Invalid location" |
332 | 7bd1d3b5 | Giorgos Verigakis | assert params.pop('store', 'pithos') == 'pithos', "Invalid store" |
333 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('disk_format', |
334 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_DISK_FORMAT) in \
|
335 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_DISK_FORMATS, "Invalid disk_format"
|
336 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('container_format', |
337 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_CONTAINER_FORMAT) in \
|
338 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_CONTAINER_FORMATS, "Invalid container_format"
|
339 | 7bd1d3b5 | Giorgos Verigakis | |
340 | f5afd99b | Giorgos Verigakis | user = self.user
|
341 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
342 | c34de90f | Giorgos Verigakis | |
343 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location)
|
344 | 06c8fb11 | Giorgos Verigakis | assert meta, "File not found" |
345 | c34de90f | Giorgos Verigakis | |
346 | bfd9f988 | Giorgos Verigakis | size = int(params.pop('size', meta['bytes'])) |
347 | 0a72907b | Giorgos Verigakis | if size != meta['bytes']: |
348 | bfd9f988 | Giorgos Verigakis | print repr(size) |
349 | bfd9f988 | Giorgos Verigakis | print repr(meta['bytes']) |
350 | c34de90f | Giorgos Verigakis | raise BackendException("Invalid size") |
351 | c34de90f | Giorgos Verigakis | |
352 | 0a72907b | Giorgos Verigakis | checksum = params.pop('checksum', meta['hash']) |
353 | 0a72907b | Giorgos Verigakis | if checksum != meta['hash']: |
354 | c34de90f | Giorgos Verigakis | raise BackendException("Invalid checksum") |
355 | c34de90f | Giorgos Verigakis | |
356 | f5afd99b | Giorgos Verigakis | is_public = params.pop('is_public', False) |
357 | 921355f8 | Giorgos Verigakis | permissions = {'read': ['*']} if is_public else {} |
358 | c34de90f | Giorgos Verigakis | |
359 | f5afd99b | Giorgos Verigakis | meta = {} |
360 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
361 | 0a72907b | Giorgos Verigakis | meta.update(name=name, status='available', **params)
|
362 | c34de90f | Giorgos Verigakis | |
363 | 7bd1d3b5 | Giorgos Verigakis | self._update_meta(location, meta)
|
364 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
365 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
366 | 04ba5fd4 | Giorgos Verigakis | |
367 | f5afd99b | Giorgos Verigakis | def remove_user(self, image_id, user): |
368 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
369 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
370 | 7bd1d3b5 | Giorgos Verigakis | |
371 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
372 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
373 | f5afd99b | Giorgos Verigakis | try:
|
374 | f5afd99b | Giorgos Verigakis | permissions.get('read', []).remove(user)
|
375 | f5afd99b | Giorgos Verigakis | except ValueError: |
376 | f5afd99b | Giorgos Verigakis | return # User did not have access anyway |
377 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
378 | 15137c54 | Giorgos Verigakis | |
379 | f5afd99b | Giorgos Verigakis | def replace_users(self, image_id, users): |
380 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
381 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
382 | 04ba5fd4 | Giorgos Verigakis | |
383 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
384 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
385 | f5afd99b | Giorgos Verigakis | permissions['read'] = users
|
386 | f5afd99b | Giorgos Verigakis | if image.get('is_public', False): |
387 | f5afd99b | Giorgos Verigakis | permissions['read'].append('*') |
388 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
389 | 7e00b33e | Giorgos Verigakis | |
390 | 7bd1d3b5 | Giorgos Verigakis | def update(self, image_id, params): |
391 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
392 | 15137c54 | Giorgos Verigakis | assert image, "Image not found" |
393 | 7e00b33e | Giorgos Verigakis | |
394 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
395 | 7bd1d3b5 | Giorgos Verigakis | is_public = params.pop('is_public', None) |
396 | 7e00b33e | Giorgos Verigakis | if is_public is not None: |
397 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
398 | f5afd99b | Giorgos Verigakis | read = set(permissions.get('read', [])) |
399 | 7e00b33e | Giorgos Verigakis | if is_public:
|
400 | f5afd99b | Giorgos Verigakis | read.add('*')
|
401 | 7e00b33e | Giorgos Verigakis | else:
|
402 | f5afd99b | Giorgos Verigakis | read.discard('*')
|
403 | f5afd99b | Giorgos Verigakis | permissions['read'] = list(read) |
404 | 7bd1d3b5 | Giorgos Verigakis | self.backend._update_permissions(location, permissions)
|
405 | 7e00b33e | Giorgos Verigakis | |
406 | 7bd1d3b5 | Giorgos Verigakis | meta = {} |
407 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
408 | 7bd1d3b5 | Giorgos Verigakis | meta.update(**params) |
409 | f5afd99b | Giorgos Verigakis | |
410 | 7bd1d3b5 | Giorgos Verigakis | self._update_meta(location, meta)
|
411 | bfd9f988 | Giorgos Verigakis | return self.get_image(image_id) |