root / snf-cyclades-app / synnefo / plankton / backend.py @ c3bcaeff
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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 | 2db7d9df | Christos Stavrakakis | from time import gmtime, strftime |
58 | 2db7d9df | Christos Stavrakakis | from functools import wraps |
59 | c34de90f | Giorgos Verigakis | |
60 | c34de90f | Giorgos Verigakis | from django.conf import settings |
61 | c34de90f | Giorgos Verigakis | |
62 | 2db7d9df | Christos Stavrakakis | from pithos.backends.base import NotAllowedError as PithosNotAllowedError |
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 | 7784ab88 | Christos Stavrakakis | |
79 | 7bd1d3b5 | Giorgos Verigakis | def split_location(location): |
80 | 7bd1d3b5 | Giorgos Verigakis | """Returns (accout, container, object) from a location string"""
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81 | 7bd1d3b5 | Giorgos Verigakis | t = location.split('/', 4) |
82 | 7bd1d3b5 | Giorgos Verigakis | assert len(t) == 5, "Invalid location" |
83 | 7bd1d3b5 | Giorgos Verigakis | return t[2:5] |
84 | 7bd1d3b5 | Giorgos Verigakis | |
85 | 7bd1d3b5 | Giorgos Verigakis | |
86 | 0a72907b | Giorgos Verigakis | class BackendException(Exception): |
87 | 0a72907b | Giorgos Verigakis | pass
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88 | c34de90f | Giorgos Verigakis | |
89 | c34de90f | Giorgos Verigakis | |
90 | 2db7d9df | Christos Stavrakakis | class NotAllowedError(BackendException): |
91 | 2db7d9df | Christos Stavrakakis | pass
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92 | 2db7d9df | Christos Stavrakakis | |
93 | 2db7d9df | Christos Stavrakakis | |
94 | 7784ab88 | Christos Stavrakakis | from pithos.backends.util import PithosBackendPool |
95 | 7784ab88 | Christos Stavrakakis | POOL_SIZE = 8
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96 | 7784ab88 | Christos Stavrakakis | _pithos_backend_pool = \ |
97 | 7784ab88 | Christos Stavrakakis | PithosBackendPool(POOL_SIZE, |
98 | 7784ab88 | Christos Stavrakakis | db_connection=settings.BACKEND_DB_CONNECTION, |
99 | 7784ab88 | Christos Stavrakakis | block_path=settings.BACKEND_BLOCK_PATH) |
100 | 7784ab88 | Christos Stavrakakis | |
101 | 7784ab88 | Christos Stavrakakis | |
102 | 7784ab88 | Christos Stavrakakis | def get_pithos_backend(): |
103 | 7784ab88 | Christos Stavrakakis | return _pithos_backend_pool.pool_get()
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104 | 7784ab88 | Christos Stavrakakis | |
105 | 7784ab88 | Christos Stavrakakis | |
106 | 2db7d9df | Christos Stavrakakis | def handle_backend_exceptions(func): |
107 | 2db7d9df | Christos Stavrakakis | @wraps(func)
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108 | 2db7d9df | Christos Stavrakakis | def wrapper(*args, **kwargs): |
109 | 2db7d9df | Christos Stavrakakis | try:
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110 | 2db7d9df | Christos Stavrakakis | return func(*args, **kwargs)
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111 | 2db7d9df | Christos Stavrakakis | except PithosNotAllowedError:
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112 | 2db7d9df | Christos Stavrakakis | raise NotAllowedError()
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113 | 2db7d9df | Christos Stavrakakis | return wrapper
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114 | 2db7d9df | Christos Stavrakakis | |
115 | 2db7d9df | Christos Stavrakakis | |
116 | ffab341c | Christos Stavrakakis | class ImageBackend(object): |
117 | f5afd99b | Giorgos Verigakis | """A wrapper arround the pithos backend to simplify image handling."""
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118 | 1e28ba40 | Christos Stavrakakis | |
119 | c34de90f | Giorgos Verigakis | def __init__(self, user): |
120 | c34de90f | Giorgos Verigakis | self.user = user
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121 | 7784ab88 | Christos Stavrakakis | |
122 | c23d211a | Giorgos Verigakis | original_filters = warnings.filters |
123 | c23d211a | Giorgos Verigakis | warnings.simplefilter('ignore') # Suppress SQLAlchemy warnings |
124 | 7784ab88 | Christos Stavrakakis | self.backend = get_pithos_backend()
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125 | c23d211a | Giorgos Verigakis | warnings.filters = original_filters # Restore warnings
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126 | 7784ab88 | Christos Stavrakakis | |
127 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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128 | 7bd1d3b5 | Giorgos Verigakis | def _get_image(self, location): |
129 | f5afd99b | Giorgos Verigakis | def format_timestamp(t): |
130 | f5afd99b | Giorgos Verigakis | return strftime('%Y-%m-%d %H:%M:%S', gmtime(t)) |
131 | 1e28ba40 | Christos Stavrakakis | |
132 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
133 | 1e28ba40 | Christos Stavrakakis | |
134 | 7bd1d3b5 | Giorgos Verigakis | try:
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135 | 7bd1d3b5 | Giorgos Verigakis | versions = self.backend.list_versions(self.user, account, |
136 | 7bd1d3b5 | Giorgos Verigakis | container, object)
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137 | 7bd1d3b5 | Giorgos Verigakis | except NameError: |
138 | 7bd1d3b5 | Giorgos Verigakis | return None |
139 | 1e28ba40 | Christos Stavrakakis | |
140 | 7bd1d3b5 | Giorgos Verigakis | image = {} |
141 | 1e28ba40 | Christos Stavrakakis | |
142 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location)
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143 | 7bd1d3b5 | Giorgos Verigakis | if meta:
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144 | 7bd1d3b5 | Giorgos Verigakis | image['deleted_at'] = '' |
145 | 7bd1d3b5 | Giorgos Verigakis | else:
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146 | 7bd1d3b5 | Giorgos Verigakis | # Object was deleted, use the latest version
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147 | 7bd1d3b5 | Giorgos Verigakis | version, timestamp = versions[-1]
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148 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location, version)
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149 | 7bd1d3b5 | Giorgos Verigakis | image['deleted_at'] = format_timestamp(timestamp)
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150 | 1e28ba40 | Christos Stavrakakis | |
151 | 0a72907b | Giorgos Verigakis | if PLANKTON_PREFIX + 'name' not in meta: |
152 | 0a72907b | Giorgos Verigakis | return None # Not a Plankton image |
153 | 1e28ba40 | Christos Stavrakakis | |
154 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
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155 | 1e28ba40 | Christos Stavrakakis | |
156 | 0a72907b | Giorgos Verigakis | image['checksum'] = meta['hash'] |
157 | 7bd1d3b5 | Giorgos Verigakis | image['created_at'] = format_timestamp(versions[0][1]) |
158 | 0a72907b | Giorgos Verigakis | image['id'] = meta['uuid'] |
159 | f5afd99b | Giorgos Verigakis | image['is_public'] = '*' in permissions.get('read', []) |
160 | 7bd1d3b5 | Giorgos Verigakis | image['location'] = location
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161 | 7bd1d3b5 | Giorgos Verigakis | image['owner'] = account
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162 | 0a72907b | Giorgos Verigakis | image['size'] = meta['bytes'] |
163 | 7bd1d3b5 | Giorgos Verigakis | image['store'] = 'pithos' |
164 | 0a72907b | Giorgos Verigakis | image['updated_at'] = format_timestamp(meta['modified']) |
165 | 7bd1d3b5 | Giorgos Verigakis | image['properties'] = {}
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166 | 1e28ba40 | Christos Stavrakakis | |
167 | 7bd1d3b5 | Giorgos Verigakis | for key, val in meta.items(): |
168 | bfd9f988 | Giorgos Verigakis | if not key.startswith(PLANKTON_PREFIX): |
169 | bfd9f988 | Giorgos Verigakis | continue
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170 | bfd9f988 | Giorgos Verigakis | key = key[len(PLANKTON_PREFIX):]
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171 | bfd9f988 | Giorgos Verigakis | if key == 'properties': |
172 | bfd9f988 | Giorgos Verigakis | val = json.loads(val) |
173 | bfd9f988 | Giorgos Verigakis | if key in PLANKTON_META: |
174 | 7bd1d3b5 | Giorgos Verigakis | image[key] = val |
175 | 1e28ba40 | Christos Stavrakakis | |
176 | 0a72907b | Giorgos Verigakis | return image
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177 | 1e28ba40 | Christos Stavrakakis | |
178 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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179 | bfd9f988 | Giorgos Verigakis | def _get_meta(self, location, version=None): |
180 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
181 | 7bd1d3b5 | Giorgos Verigakis | try:
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182 | bfd9f988 | Giorgos Verigakis | return self.backend.get_object_meta(self.user, account, container, |
183 | bfd9f988 | Giorgos Verigakis | object, PLANKTON_DOMAIN, version)
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184 | 7bd1d3b5 | Giorgos Verigakis | except NameError: |
185 | 7bd1d3b5 | Giorgos Verigakis | return None |
186 | 1e28ba40 | Christos Stavrakakis | |
187 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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188 | 7bd1d3b5 | Giorgos Verigakis | def _get_permissions(self, location): |
189 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
190 | 15137c54 | Giorgos Verigakis | action, path, permissions = self.backend.get_object_permissions(
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191 | 7bd1d3b5 | Giorgos Verigakis | self.user, account, container, object) |
192 | f5afd99b | Giorgos Verigakis | return permissions
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193 | 1e28ba40 | Christos Stavrakakis | |
194 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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195 | c23d211a | Giorgos Verigakis | def _store(self, f, size=None): |
196 | 7bd1d3b5 | Giorgos Verigakis | """Breaks data into blocks and stores them in the backend"""
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197 | 1e28ba40 | Christos Stavrakakis | |
198 | c23d211a | Giorgos Verigakis | bytes = 0
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199 | f5afd99b | Giorgos Verigakis | hashmap = [] |
200 | 7bd1d3b5 | Giorgos Verigakis | backend = self.backend
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201 | c23d211a | Giorgos Verigakis | blocksize = backend.block_size |
202 | 1e28ba40 | Christos Stavrakakis | |
203 | c23d211a | Giorgos Verigakis | data = f.read(blocksize) |
204 | 7bd1d3b5 | Giorgos Verigakis | while data:
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205 | c23d211a | Giorgos Verigakis | hash = backend.put_block(data) |
206 | f5afd99b | Giorgos Verigakis | hashmap.append(hash)
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207 | c23d211a | Giorgos Verigakis | bytes += len(data) |
208 | c23d211a | Giorgos Verigakis | data = f.read(blocksize) |
209 | 1e28ba40 | Christos Stavrakakis | |
210 | c23d211a | Giorgos Verigakis | if size and size != bytes: |
211 | c23d211a | Giorgos Verigakis | raise BackendException("Invalid size") |
212 | 1e28ba40 | Christos Stavrakakis | |
213 | c23d211a | Giorgos Verigakis | return hashmap, bytes |
214 | 1e28ba40 | Christos Stavrakakis | |
215 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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216 | 7bd1d3b5 | Giorgos Verigakis | def _update(self, location, size, hashmap, meta, permissions): |
217 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
218 | 7bd1d3b5 | Giorgos Verigakis | self.backend.update_object_hashmap(self.user, account, container, |
219 | 0d316750 | Giorgos Verigakis | object, size, hashmap, '', PLANKTON_DOMAIN, |
220 | 0a72907b | Giorgos Verigakis | permissions=permissions) |
221 | 0a72907b | Giorgos Verigakis | self._update_meta(location, meta, replace=True) |
222 | 1e28ba40 | Christos Stavrakakis | |
223 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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224 | 0a72907b | Giorgos Verigakis | def _update_meta(self, location, meta, replace=False): |
225 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
226 | 1e28ba40 | Christos Stavrakakis | |
227 | bfd9f988 | Giorgos Verigakis | prefixed = {} |
228 | 0a72907b | Giorgos Verigakis | for key, val in meta.items(): |
229 | bfd9f988 | Giorgos Verigakis | if key == 'properties': |
230 | bfd9f988 | Giorgos Verigakis | val = json.dumps(val) |
231 | bfd9f988 | Giorgos Verigakis | if key in PLANKTON_META: |
232 | bfd9f988 | Giorgos Verigakis | prefixed[PLANKTON_PREFIX + key] = val |
233 | 1e28ba40 | Christos Stavrakakis | |
234 | bfd9f988 | Giorgos Verigakis | self.backend.update_object_meta(self.user, account, container, object, |
235 | bfd9f988 | Giorgos Verigakis | PLANKTON_DOMAIN, prefixed, replace) |
236 | 1e28ba40 | Christos Stavrakakis | |
237 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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238 | 7bd1d3b5 | Giorgos Verigakis | def _update_permissions(self, location, permissions): |
239 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
240 | 7bd1d3b5 | Giorgos Verigakis | self.backend.update_object_permissions(self.user, account, container, |
241 | 7bd1d3b5 | Giorgos Verigakis | object, permissions)
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242 | 1e28ba40 | Christos Stavrakakis | |
243 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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244 | f5afd99b | Giorgos Verigakis | def add_user(self, image_id, user): |
245 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
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246 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
247 | 1e28ba40 | Christos Stavrakakis | |
248 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
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249 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
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250 | f5afd99b | Giorgos Verigakis | read = set(permissions.get('read', [])) |
251 | f5afd99b | Giorgos Verigakis | read.add(user) |
252 | f5afd99b | Giorgos Verigakis | permissions['read'] = list(read) |
253 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
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254 | 1e28ba40 | Christos Stavrakakis | |
255 | f5afd99b | Giorgos Verigakis | def close(self): |
256 | f5afd99b | Giorgos Verigakis | self.backend.close()
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257 | 1e28ba40 | Christos Stavrakakis | |
258 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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259 | 6ef51e9f | Giorgos Verigakis | def delete(self, image_id): |
260 | 6ef51e9f | Giorgos Verigakis | image = self.get_image(image_id)
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261 | 6ef51e9f | Giorgos Verigakis | account, container, object = split_location(image['location'])
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262 | 6ef51e9f | Giorgos Verigakis | self.backend.delete_object(self.user, account, container, object) |
263 | 1e28ba40 | Christos Stavrakakis | |
264 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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265 | 7bd1d3b5 | Giorgos Verigakis | def get_data(self, location): |
266 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
267 | 7bd1d3b5 | Giorgos Verigakis | size, hashmap = self.backend.get_object_hashmap(self.user, account, |
268 | 7bd1d3b5 | Giorgos Verigakis | container, object)
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269 | f5afd99b | Giorgos Verigakis | data = ''.join(self.backend.get_block(hash) for hash in hashmap) |
270 | f5afd99b | Giorgos Verigakis | assert len(data) == size |
271 | f5afd99b | Giorgos Verigakis | return data
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272 | 1e28ba40 | Christos Stavrakakis | |
273 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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274 | bfd9f988 | Giorgos Verigakis | def get_image(self, image_id): |
275 | 0a72907b | Giorgos Verigakis | try:
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276 | 0a72907b | Giorgos Verigakis | account, container, object = self.backend.get_uuid(self.user, |
277 | 0a72907b | Giorgos Verigakis | image_id) |
278 | 0a72907b | Giorgos Verigakis | except NameError: |
279 | 0a72907b | Giorgos Verigakis | return None |
280 | 1e28ba40 | Christos Stavrakakis | |
281 | 0a72907b | Giorgos Verigakis | location = get_location(account, container, object)
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282 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
283 | 1e28ba40 | Christos Stavrakakis | |
284 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
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285 | aed77afe | Christos Stavrakakis | def _iter(self, public=False, filters=None, shared_from=None): |
286 | d19e8f77 | Giorgos Verigakis | filters = filters or {}
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287 | 1e28ba40 | Christos Stavrakakis | |
288 | aed77afe | Christos Stavrakakis | # Fix keys
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289 | bfd9f988 | Giorgos Verigakis | keys = [PLANKTON_PREFIX + 'name']
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290 | 434d1e68 | Giorgos Verigakis | size_range = (None, None) |
291 | f5afd99b | Giorgos Verigakis | for key, val in filters.items(): |
292 | 0a72907b | Giorgos Verigakis | if key == 'size_min': |
293 | c3bcaeff | Stratos Psomadakis | size_range = (val, size_range[1])
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294 | 0a72907b | Giorgos Verigakis | elif key == 'size_max': |
295 | c3bcaeff | Stratos Psomadakis | size_range = (size_range[0], val)
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296 | f5afd99b | Giorgos Verigakis | else:
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297 | 434d1e68 | Giorgos Verigakis | keys.append('%s = %s' % (PLANKTON_PREFIX + key, val))
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298 | 1e28ba40 | Christos Stavrakakis | |
299 | aed77afe | Christos Stavrakakis | backend = self.backend
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300 | aed77afe | Christos Stavrakakis | if shared_from:
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301 | aed77afe | Christos Stavrakakis | # To get shared images, we connect as shared_from member and
|
302 | aed77afe | Christos Stavrakakis | # get the list shared by us
|
303 | aed77afe | Christos Stavrakakis | user = shared_from |
304 | aed77afe | Christos Stavrakakis | accounts = [self.user]
|
305 | aed77afe | Christos Stavrakakis | else:
|
306 | aed77afe | Christos Stavrakakis | user = None if public else self.user |
307 | aed77afe | Christos Stavrakakis | accounts = backend.list_accounts(user) |
308 | aed77afe | Christos Stavrakakis | |
309 | aed77afe | Christos Stavrakakis | for account in accounts: |
310 | aed77afe | Christos Stavrakakis | for container in backend.list_containers(user, account, |
311 | 0a72907b | Giorgos Verigakis | shared=True):
|
312 | aed77afe | Christos Stavrakakis | for path, _ in backend.list_objects(user, account, container, |
313 | aed77afe | Christos Stavrakakis | domain=PLANKTON_DOMAIN, |
314 | aed77afe | Christos Stavrakakis | keys=keys, shared=True,
|
315 | aed77afe | Christos Stavrakakis | size_range=size_range): |
316 | 0a72907b | Giorgos Verigakis | location = get_location(account, container, path) |
317 | 0a72907b | Giorgos Verigakis | image = self._get_image(location)
|
318 | 0a72907b | Giorgos Verigakis | if image:
|
319 | 0a72907b | Giorgos Verigakis | yield image
|
320 | 1e28ba40 | Christos Stavrakakis | |
321 | aed77afe | Christos Stavrakakis | def iter(self, filters=None): |
322 | aed77afe | Christos Stavrakakis | """Iter over all images available to the user"""
|
323 | aed77afe | Christos Stavrakakis | return self._iter(filters=filters) |
324 | 1e28ba40 | Christos Stavrakakis | |
325 | aed77afe | Christos Stavrakakis | def iter_public(self, filters=None): |
326 | aed77afe | Christos Stavrakakis | """Iter over public images"""
|
327 | aed77afe | Christos Stavrakakis | return self._iter(public=True, filters=filters) |
328 | 1e28ba40 | Christos Stavrakakis | |
329 | aed77afe | Christos Stavrakakis | def iter_shared(self, filters=None, member=None): |
330 | aed77afe | Christos Stavrakakis | """Iter over images shared to member"""
|
331 | d0e8984d | Christos Stavrakakis | return self._iter(filters=filters, shared_from=member) |
332 | 1e28ba40 | Christos Stavrakakis | |
333 | aed77afe | Christos Stavrakakis | def list(self, filters=None, params={}): |
334 | aed77afe | Christos Stavrakakis | """Return all images available to the user"""
|
335 | aed77afe | Christos Stavrakakis | images = list(self.iter(filters)) |
336 | aed77afe | Christos Stavrakakis | key = itemgetter(params.get('sort_key', 'created_at')) |
337 | aed77afe | Christos Stavrakakis | reverse = params.get('sort_dir', 'desc') == 'desc' |
338 | aed77afe | Christos Stavrakakis | images.sort(key=key, reverse=reverse) |
339 | aed77afe | Christos Stavrakakis | return images
|
340 | 1e28ba40 | Christos Stavrakakis | |
341 | aed77afe | Christos Stavrakakis | def list_public(self, filters, params={}): |
342 | aed77afe | Christos Stavrakakis | """Return public images"""
|
343 | f5afd99b | Giorgos Verigakis | images = list(self.iter_public(filters)) |
344 | 7bd1d3b5 | Giorgos Verigakis | key = itemgetter(params.get('sort_key', 'created_at')) |
345 | 7bd1d3b5 | Giorgos Verigakis | reverse = params.get('sort_dir', 'desc') == 'desc' |
346 | f5afd99b | Giorgos Verigakis | images.sort(key=key, reverse=reverse) |
347 | f5afd99b | Giorgos Verigakis | return images
|
348 | 1e28ba40 | Christos Stavrakakis | |
349 | f5afd99b | Giorgos Verigakis | def list_users(self, image_id): |
350 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
351 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
352 | 1e28ba40 | Christos Stavrakakis | |
353 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(image['location']) |
354 | f5afd99b | Giorgos Verigakis | return [user for user in permissions.get('read', []) if user != '*'] |
355 | 1e28ba40 | Christos Stavrakakis | |
356 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
357 | c23d211a | Giorgos Verigakis | def put(self, name, f, params): |
358 | 7bd1d3b5 | Giorgos Verigakis | assert 'checksum' not in params, "Passing a checksum is not supported" |
359 | 7bd1d3b5 | Giorgos Verigakis | assert 'id' not in params, "Passing an ID is not supported" |
360 | 7bd1d3b5 | Giorgos Verigakis | assert params.pop('store', 'pithos') == 'pithos', "Invalid store" |
361 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('disk_format', |
362 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_DISK_FORMAT) in \
|
363 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_DISK_FORMATS, "Invalid disk_format"
|
364 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('container_format', |
365 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_CONTAINER_FORMAT) in \
|
366 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_CONTAINER_FORMATS, "Invalid container_format"
|
367 | 1e28ba40 | Christos Stavrakakis | |
368 | bfd9f988 | Giorgos Verigakis | container = settings.DEFAULT_PLANKTON_CONTAINER |
369 | c23d211a | Giorgos Verigakis | filename = params.pop('filename', name)
|
370 | bfd9f988 | Giorgos Verigakis | location = 'pithos://%s/%s/%s' % (self.user, container, filename) |
371 | f5afd99b | Giorgos Verigakis | is_public = params.pop('is_public', False) |
372 | 921355f8 | Giorgos Verigakis | permissions = {'read': ['*']} if is_public else {} |
373 | c23d211a | Giorgos Verigakis | size = params.pop('size', None) |
374 | 1e28ba40 | Christos Stavrakakis | |
375 | c23d211a | Giorgos Verigakis | hashmap, size = self._store(f, size)
|
376 | 1e28ba40 | Christos Stavrakakis | |
377 | 7bd1d3b5 | Giorgos Verigakis | meta = {} |
378 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
379 | 0a72907b | Giorgos Verigakis | meta.update(name=name, status='available', **params)
|
380 | 1e28ba40 | Christos Stavrakakis | |
381 | 7bd1d3b5 | Giorgos Verigakis | self._update(location, size, hashmap, meta, permissions)
|
382 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
383 | 1e28ba40 | Christos Stavrakakis | |
384 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
385 | f5afd99b | Giorgos Verigakis | def register(self, name, location, params): |
386 | 7bd1d3b5 | Giorgos Verigakis | assert 'id' not in params, "Passing an ID is not supported" |
387 | 7bd1d3b5 | Giorgos Verigakis | assert location.startswith('pithos://'), "Invalid location" |
388 | 7bd1d3b5 | Giorgos Verigakis | assert params.pop('store', 'pithos') == 'pithos', "Invalid store" |
389 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('disk_format', |
390 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_DISK_FORMAT) in \
|
391 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_DISK_FORMATS, "Invalid disk_format"
|
392 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('container_format', |
393 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_CONTAINER_FORMAT) in \
|
394 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_CONTAINER_FORMATS, "Invalid container_format"
|
395 | 1e28ba40 | Christos Stavrakakis | |
396 | 1e28ba40 | Christos Stavrakakis | # user = self.user
|
397 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
398 | 1e28ba40 | Christos Stavrakakis | |
399 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location)
|
400 | 06c8fb11 | Giorgos Verigakis | assert meta, "File not found" |
401 | 1e28ba40 | Christos Stavrakakis | |
402 | bfd9f988 | Giorgos Verigakis | size = int(params.pop('size', meta['bytes'])) |
403 | 0a72907b | Giorgos Verigakis | if size != meta['bytes']: |
404 | c34de90f | Giorgos Verigakis | raise BackendException("Invalid size") |
405 | 1e28ba40 | Christos Stavrakakis | |
406 | 0a72907b | Giorgos Verigakis | checksum = params.pop('checksum', meta['hash']) |
407 | 0a72907b | Giorgos Verigakis | if checksum != meta['hash']: |
408 | c34de90f | Giorgos Verigakis | raise BackendException("Invalid checksum") |
409 | 1e28ba40 | Christos Stavrakakis | |
410 | f5afd99b | Giorgos Verigakis | is_public = params.pop('is_public', False) |
411 | aed77afe | Christos Stavrakakis | if is_public:
|
412 | aed77afe | Christos Stavrakakis | permissions = {'read': ['*']} |
413 | aed77afe | Christos Stavrakakis | else:
|
414 | aed77afe | Christos Stavrakakis | permissions = {'read': [self.user]} |
415 | 1e28ba40 | Christos Stavrakakis | |
416 | f5afd99b | Giorgos Verigakis | meta = {} |
417 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
418 | 0a72907b | Giorgos Verigakis | meta.update(name=name, status='available', **params)
|
419 | 1e28ba40 | Christos Stavrakakis | |
420 | 7bd1d3b5 | Giorgos Verigakis | self._update_meta(location, meta)
|
421 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
422 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
423 | 1e28ba40 | Christos Stavrakakis | |
424 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
425 | f5afd99b | Giorgos Verigakis | def remove_user(self, image_id, user): |
426 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
427 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
428 | 1e28ba40 | Christos Stavrakakis | |
429 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
430 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
431 | f5afd99b | Giorgos Verigakis | try:
|
432 | f5afd99b | Giorgos Verigakis | permissions.get('read', []).remove(user)
|
433 | f5afd99b | Giorgos Verigakis | except ValueError: |
434 | f5afd99b | Giorgos Verigakis | return # User did not have access anyway |
435 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
436 | 1e28ba40 | Christos Stavrakakis | |
437 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
438 | f5afd99b | Giorgos Verigakis | def replace_users(self, image_id, users): |
439 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
440 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
441 | 1e28ba40 | Christos Stavrakakis | |
442 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
443 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
444 | f5afd99b | Giorgos Verigakis | permissions['read'] = users
|
445 | f5afd99b | Giorgos Verigakis | if image.get('is_public', False): |
446 | f5afd99b | Giorgos Verigakis | permissions['read'].append('*') |
447 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
448 | 1e28ba40 | Christos Stavrakakis | |
449 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
450 | 7bd1d3b5 | Giorgos Verigakis | def update(self, image_id, params): |
451 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
452 | 15137c54 | Giorgos Verigakis | assert image, "Image not found" |
453 | 1e28ba40 | Christos Stavrakakis | |
454 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
455 | 7bd1d3b5 | Giorgos Verigakis | is_public = params.pop('is_public', None) |
456 | 7e00b33e | Giorgos Verigakis | if is_public is not None: |
457 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
458 | f5afd99b | Giorgos Verigakis | read = set(permissions.get('read', [])) |
459 | 7e00b33e | Giorgos Verigakis | if is_public:
|
460 | f5afd99b | Giorgos Verigakis | read.add('*')
|
461 | 7e00b33e | Giorgos Verigakis | else:
|
462 | f5afd99b | Giorgos Verigakis | read.discard('*')
|
463 | f5afd99b | Giorgos Verigakis | permissions['read'] = list(read) |
464 | 7bd1d3b5 | Giorgos Verigakis | self.backend._update_permissions(location, permissions)
|
465 | 1e28ba40 | Christos Stavrakakis | |
466 | 7bd1d3b5 | Giorgos Verigakis | meta = {} |
467 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
468 | 7bd1d3b5 | Giorgos Verigakis | meta.update(**params) |
469 | 1e28ba40 | Christos Stavrakakis | |
470 | 7bd1d3b5 | Giorgos Verigakis | self._update_meta(location, meta)
|
471 | bfd9f988 | Giorgos Verigakis | return self.get_image(image_id) |