root / snf-cyclades-app / synnefo / plankton / backend.py @ 7856a37a
History | View | Annotate | Download (18.2 kB)
1 | c34de90f | Giorgos Verigakis | # Copyright 2011 GRNET S.A. All rights reserved.
|
---|---|---|---|
2 | c34de90f | Giorgos Verigakis | #
|
3 | c34de90f | Giorgos Verigakis | # Redistribution and use in source and binary forms, with or
|
4 | c34de90f | Giorgos Verigakis | # without modification, are permitted provided that the following
|
5 | c34de90f | Giorgos Verigakis | # conditions are met:
|
6 | c34de90f | Giorgos Verigakis | #
|
7 | c34de90f | Giorgos Verigakis | # 1. Redistributions of source code must retain the above
|
8 | c34de90f | Giorgos Verigakis | # copyright notice, this list of conditions and the following
|
9 | c34de90f | Giorgos Verigakis | # disclaimer.
|
10 | c34de90f | Giorgos Verigakis | #
|
11 | c34de90f | Giorgos Verigakis | # 2. Redistributions in binary form must reproduce the above
|
12 | c34de90f | Giorgos Verigakis | # copyright notice, this list of conditions and the following
|
13 | c34de90f | Giorgos Verigakis | # disclaimer in the documentation and/or other materials
|
14 | c34de90f | Giorgos Verigakis | # provided with the distribution.
|
15 | c34de90f | Giorgos Verigakis | #
|
16 | c34de90f | Giorgos Verigakis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
17 | c34de90f | Giorgos Verigakis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
18 | c34de90f | Giorgos Verigakis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
19 | c34de90f | Giorgos Verigakis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
20 | c34de90f | Giorgos Verigakis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
21 | c34de90f | Giorgos Verigakis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
22 | c34de90f | Giorgos Verigakis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
23 | c34de90f | Giorgos Verigakis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
24 | c34de90f | Giorgos Verigakis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
25 | c34de90f | Giorgos Verigakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
26 | c34de90f | Giorgos Verigakis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
27 | c34de90f | Giorgos Verigakis | # POSSIBILITY OF SUCH DAMAGE.
|
28 | c34de90f | Giorgos Verigakis | #
|
29 | c34de90f | Giorgos Verigakis | # The views and conclusions contained in the software and
|
30 | c34de90f | Giorgos Verigakis | # documentation are those of the authors and should not be
|
31 | c34de90f | Giorgos Verigakis | # interpreted as representing official policies, either expressed
|
32 | c34de90f | Giorgos Verigakis | # or implied, of GRNET S.A.
|
33 | c34de90f | Giorgos Verigakis | |
34 | f5afd99b | Giorgos Verigakis | """
|
35 | bfd9f988 | Giorgos Verigakis | The Plankton attributes are the following:
|
36 | 0a72907b | Giorgos Verigakis | - checksum: the 'hash' meta
|
37 | 7bd1d3b5 | Giorgos Verigakis | - container_format: stored as a user meta
|
38 | 0a72907b | Giorgos Verigakis | - created_at: the 'modified' meta of the first version
|
39 | 0a72907b | Giorgos Verigakis | - deleted_at: the timestamp of the last version
|
40 | 7bd1d3b5 | Giorgos Verigakis | - disk_format: stored as a user meta
|
41 | 0a72907b | Giorgos Verigakis | - id: the 'uuid' meta
|
42 | f5afd99b | Giorgos Verigakis | - is_public: True if there is a * entry for the read permission
|
43 | 0a72907b | Giorgos Verigakis | - location: generated based on the file's path
|
44 | 7bd1d3b5 | Giorgos Verigakis | - name: stored as a user meta
|
45 | 0a72907b | Giorgos Verigakis | - owner: the file's account
|
46 | 7bd1d3b5 | Giorgos Verigakis | - properties: stored as user meta prefixed with PROPERTY_PREFIX
|
47 | 0a72907b | Giorgos Verigakis | - size: the 'bytes' meta
|
48 | 7bd1d3b5 | Giorgos Verigakis | - status: stored as a system meta
|
49 | 7bd1d3b5 | Giorgos Verigakis | - store: is always 'pithos'
|
50 | 0a72907b | Giorgos Verigakis | - updated_at: the 'modified' meta
|
51 | f5afd99b | Giorgos Verigakis | """
|
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 | 469d0997 | Georgios D. Tsoukalas | from functools import wraps, partial |
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 | 469d0997 | Georgios D. Tsoukalas | import synnefo.lib.astakos as lib_astakos |
64 | 469d0997 | Georgios D. Tsoukalas | import logging |
65 | 469d0997 | Georgios D. Tsoukalas | |
66 | f4366b6c | Stratos Psomadakis | from synnefo.settings import (CYCLADES_USE_QUOTAHOLDER, |
67 | f4366b6c | Stratos Psomadakis | CYCLADES_QUOTAHOLDER_URL, |
68 | f4366b6c | Stratos Psomadakis | CYCLADES_QUOTAHOLDER_TOKEN) |
69 | f4366b6c | Stratos Psomadakis | |
70 | 469d0997 | Georgios D. Tsoukalas | logger = logging.getLogger(__name__) |
71 | c34de90f | Giorgos Verigakis | |
72 | c34de90f | Giorgos Verigakis | |
73 | 0a72907b | Giorgos Verigakis | PLANKTON_DOMAIN = 'plankton'
|
74 | bfd9f988 | Giorgos Verigakis | PLANKTON_PREFIX = 'plankton:'
|
75 | 7bd1d3b5 | Giorgos Verigakis | PROPERTY_PREFIX = 'property:'
|
76 | 7bd1d3b5 | Giorgos Verigakis | |
77 | bfd9f988 | Giorgos Verigakis | PLANKTON_META = ('container_format', 'disk_format', 'name', 'properties', |
78 | bfd9f988 | Giorgos Verigakis | 'status')
|
79 | c34de90f | Giorgos Verigakis | |
80 | 469d0997 | Georgios D. Tsoukalas | TRANSLATE_UUIDS = getattr(settings, 'TRANSLATE_UUIDS', False) |
81 | 469d0997 | Georgios D. Tsoukalas | |
82 | 7856a37a | Stratos Psomadakis | |
83 | 469d0997 | Georgios D. Tsoukalas | def get_displaynames(names): |
84 | 469d0997 | Georgios D. Tsoukalas | try:
|
85 | 469d0997 | Georgios D. Tsoukalas | auth_url = settings.ASTAKOS_URL |
86 | 469d0997 | Georgios D. Tsoukalas | url = auth_url.replace('im/authenticate', 'service/api/user_catalogs') |
87 | 469d0997 | Georgios D. Tsoukalas | token = settings.CYCLADES_ASTAKOS_SERVICE_TOKEN |
88 | 469d0997 | Georgios D. Tsoukalas | uuids = lib_astakos.get_displaynames(token, names, url=url) |
89 | 469d0997 | Georgios D. Tsoukalas | except Exception, e: |
90 | 469d0997 | Georgios D. Tsoukalas | logger.exception(e) |
91 | 469d0997 | Georgios D. Tsoukalas | return {}
|
92 | 469d0997 | Georgios D. Tsoukalas | |
93 | 469d0997 | Georgios D. Tsoukalas | return uuids
|
94 | 469d0997 | Georgios D. Tsoukalas | |
95 | c34de90f | Giorgos Verigakis | |
96 | 7bd1d3b5 | Giorgos Verigakis | def get_location(account, container, object): |
97 | 7bd1d3b5 | Giorgos Verigakis | assert '/' not in account, "Invalid account" |
98 | 7bd1d3b5 | Giorgos Verigakis | assert '/' not in container, "Invalid container" |
99 | 7bd1d3b5 | Giorgos Verigakis | return 'pithos://%s/%s/%s' % (account, container, object) |
100 | 7bd1d3b5 | Giorgos Verigakis | |
101 | 7784ab88 | Christos Stavrakakis | |
102 | 7bd1d3b5 | Giorgos Verigakis | def split_location(location): |
103 | 7bd1d3b5 | Giorgos Verigakis | """Returns (accout, container, object) from a location string"""
|
104 | 7bd1d3b5 | Giorgos Verigakis | t = location.split('/', 4) |
105 | 7bd1d3b5 | Giorgos Verigakis | assert len(t) == 5, "Invalid location" |
106 | 7bd1d3b5 | Giorgos Verigakis | return t[2:5] |
107 | 7bd1d3b5 | Giorgos Verigakis | |
108 | 7bd1d3b5 | Giorgos Verigakis | |
109 | 0a72907b | Giorgos Verigakis | class BackendException(Exception): |
110 | 0a72907b | Giorgos Verigakis | pass
|
111 | c34de90f | Giorgos Verigakis | |
112 | c34de90f | Giorgos Verigakis | |
113 | 2db7d9df | Christos Stavrakakis | class NotAllowedError(BackendException): |
114 | 2db7d9df | Christos Stavrakakis | pass
|
115 | 2db7d9df | Christos Stavrakakis | |
116 | 2db7d9df | Christos Stavrakakis | |
117 | 7784ab88 | Christos Stavrakakis | from pithos.backends.util import PithosBackendPool |
118 | 7784ab88 | Christos Stavrakakis | POOL_SIZE = 8
|
119 | 7784ab88 | Christos Stavrakakis | _pithos_backend_pool = \ |
120 | cc92b70f | Christos Stavrakakis | PithosBackendPool(POOL_SIZE, |
121 | f4366b6c | Stratos Psomadakis | quotaholder_enabled=CYCLADES_USE_QUOTAHOLDER, |
122 | f4366b6c | Stratos Psomadakis | quotaholder_url=CYCLADES_QUOTAHOLDER_URL, |
123 | f4366b6c | Stratos Psomadakis | quotaholder_token=CYCLADES_QUOTAHOLDER_TOKEN, |
124 | cc92b70f | Christos Stavrakakis | db_connection=settings.BACKEND_DB_CONNECTION, |
125 | cc92b70f | Christos Stavrakakis | block_path=settings.BACKEND_BLOCK_PATH) |
126 | 7784ab88 | Christos Stavrakakis | |
127 | 7784ab88 | Christos Stavrakakis | |
128 | 7784ab88 | Christos Stavrakakis | def get_pithos_backend(): |
129 | 7784ab88 | Christos Stavrakakis | return _pithos_backend_pool.pool_get()
|
130 | 7784ab88 | Christos Stavrakakis | |
131 | 7784ab88 | Christos Stavrakakis | |
132 | 2db7d9df | Christos Stavrakakis | def handle_backend_exceptions(func): |
133 | 2db7d9df | Christos Stavrakakis | @wraps(func)
|
134 | 2db7d9df | Christos Stavrakakis | def wrapper(*args, **kwargs): |
135 | 2db7d9df | Christos Stavrakakis | try:
|
136 | 2db7d9df | Christos Stavrakakis | return func(*args, **kwargs)
|
137 | 2db7d9df | Christos Stavrakakis | except PithosNotAllowedError:
|
138 | 2db7d9df | Christos Stavrakakis | raise NotAllowedError()
|
139 | 2db7d9df | Christos Stavrakakis | return wrapper
|
140 | 2db7d9df | Christos Stavrakakis | |
141 | 2db7d9df | Christos Stavrakakis | |
142 | ffab341c | Christos Stavrakakis | class ImageBackend(object): |
143 | f5afd99b | Giorgos Verigakis | """A wrapper arround the pithos backend to simplify image handling."""
|
144 | 1e28ba40 | Christos Stavrakakis | |
145 | c34de90f | Giorgos Verigakis | def __init__(self, user): |
146 | c34de90f | Giorgos Verigakis | self.user = user
|
147 | 7784ab88 | Christos Stavrakakis | |
148 | c23d211a | Giorgos Verigakis | original_filters = warnings.filters |
149 | c23d211a | Giorgos Verigakis | warnings.simplefilter('ignore') # Suppress SQLAlchemy warnings |
150 | 7784ab88 | Christos Stavrakakis | self.backend = get_pithos_backend()
|
151 | c23d211a | Giorgos Verigakis | warnings.filters = original_filters # Restore warnings
|
152 | 7784ab88 | Christos Stavrakakis | |
153 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
154 | 7bd1d3b5 | Giorgos Verigakis | def _get_image(self, location): |
155 | f5afd99b | Giorgos Verigakis | def format_timestamp(t): |
156 | f5afd99b | Giorgos Verigakis | return strftime('%Y-%m-%d %H:%M:%S', gmtime(t)) |
157 | 1e28ba40 | Christos Stavrakakis | |
158 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
159 | 1e28ba40 | Christos Stavrakakis | |
160 | 7bd1d3b5 | Giorgos Verigakis | try:
|
161 | 7bd1d3b5 | Giorgos Verigakis | versions = self.backend.list_versions(self.user, account, |
162 | cc92b70f | Christos Stavrakakis | container, object)
|
163 | 7bd1d3b5 | Giorgos Verigakis | except NameError: |
164 | 7bd1d3b5 | Giorgos Verigakis | return None |
165 | 1e28ba40 | Christos Stavrakakis | |
166 | 7bd1d3b5 | Giorgos Verigakis | image = {} |
167 | 1e28ba40 | Christos Stavrakakis | |
168 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location)
|
169 | 7bd1d3b5 | Giorgos Verigakis | if meta:
|
170 | 7bd1d3b5 | Giorgos Verigakis | image['deleted_at'] = '' |
171 | 7bd1d3b5 | Giorgos Verigakis | else:
|
172 | 7bd1d3b5 | Giorgos Verigakis | # Object was deleted, use the latest version
|
173 | 7bd1d3b5 | Giorgos Verigakis | version, timestamp = versions[-1]
|
174 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location, version)
|
175 | 7bd1d3b5 | Giorgos Verigakis | image['deleted_at'] = format_timestamp(timestamp)
|
176 | 1e28ba40 | Christos Stavrakakis | |
177 | 0a72907b | Giorgos Verigakis | if PLANKTON_PREFIX + 'name' not in meta: |
178 | 0a72907b | Giorgos Verigakis | return None # Not a Plankton image |
179 | 1e28ba40 | Christos Stavrakakis | |
180 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
181 | 1e28ba40 | Christos Stavrakakis | |
182 | 0a72907b | Giorgos Verigakis | image['checksum'] = meta['hash'] |
183 | 7bd1d3b5 | Giorgos Verigakis | image['created_at'] = format_timestamp(versions[0][1]) |
184 | 0a72907b | Giorgos Verigakis | image['id'] = meta['uuid'] |
185 | f5afd99b | Giorgos Verigakis | image['is_public'] = '*' in permissions.get('read', []) |
186 | 7bd1d3b5 | Giorgos Verigakis | image['location'] = location
|
187 | 469d0997 | Georgios D. Tsoukalas | if TRANSLATE_UUIDS:
|
188 | 469d0997 | Georgios D. Tsoukalas | displaynames = get_displaynames([account]) |
189 | 469d0997 | Georgios D. Tsoukalas | if account in displaynames: |
190 | 469d0997 | Georgios D. Tsoukalas | display_account = displaynames[account] |
191 | 469d0997 | Georgios D. Tsoukalas | else:
|
192 | 469d0997 | Georgios D. Tsoukalas | display_account = 'unknown'
|
193 | 469d0997 | Georgios D. Tsoukalas | image['owner'] = display_account
|
194 | 469d0997 | Georgios D. Tsoukalas | else:
|
195 | 469d0997 | Georgios D. Tsoukalas | image['owner'] = account
|
196 | 0a72907b | Giorgos Verigakis | image['size'] = meta['bytes'] |
197 | 7bd1d3b5 | Giorgos Verigakis | image['store'] = 'pithos' |
198 | 0a72907b | Giorgos Verigakis | image['updated_at'] = format_timestamp(meta['modified']) |
199 | 7bd1d3b5 | Giorgos Verigakis | image['properties'] = {}
|
200 | 1e28ba40 | Christos Stavrakakis | |
201 | 7bd1d3b5 | Giorgos Verigakis | for key, val in meta.items(): |
202 | bfd9f988 | Giorgos Verigakis | if not key.startswith(PLANKTON_PREFIX): |
203 | bfd9f988 | Giorgos Verigakis | continue
|
204 | bfd9f988 | Giorgos Verigakis | key = key[len(PLANKTON_PREFIX):]
|
205 | bfd9f988 | Giorgos Verigakis | if key == 'properties': |
206 | bfd9f988 | Giorgos Verigakis | val = json.loads(val) |
207 | bfd9f988 | Giorgos Verigakis | if key in PLANKTON_META: |
208 | 7bd1d3b5 | Giorgos Verigakis | image[key] = val |
209 | 1e28ba40 | Christos Stavrakakis | |
210 | 0a72907b | Giorgos Verigakis | return image
|
211 | 1e28ba40 | Christos Stavrakakis | |
212 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
213 | bfd9f988 | Giorgos Verigakis | def _get_meta(self, location, version=None): |
214 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
215 | 7bd1d3b5 | Giorgos Verigakis | try:
|
216 | bfd9f988 | Giorgos Verigakis | return self.backend.get_object_meta(self.user, account, container, |
217 | cc92b70f | Christos Stavrakakis | object, PLANKTON_DOMAIN,
|
218 | cc92b70f | Christos Stavrakakis | version) |
219 | 7bd1d3b5 | Giorgos Verigakis | except NameError: |
220 | 7bd1d3b5 | Giorgos Verigakis | return None |
221 | 1e28ba40 | Christos Stavrakakis | |
222 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
223 | 7bd1d3b5 | Giorgos Verigakis | def _get_permissions(self, location): |
224 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
225 | cc92b70f | Christos Stavrakakis | _a, _p, permissions = self.backend.get_object_permissions(self.user, |
226 | cc92b70f | Christos Stavrakakis | account, |
227 | cc92b70f | Christos Stavrakakis | container, |
228 | cc92b70f | Christos Stavrakakis | object)
|
229 | f5afd99b | Giorgos Verigakis | return permissions
|
230 | 1e28ba40 | Christos Stavrakakis | |
231 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
232 | c23d211a | Giorgos Verigakis | def _store(self, f, size=None): |
233 | 7bd1d3b5 | Giorgos Verigakis | """Breaks data into blocks and stores them in the backend"""
|
234 | 1e28ba40 | Christos Stavrakakis | |
235 | c23d211a | Giorgos Verigakis | bytes = 0
|
236 | f5afd99b | Giorgos Verigakis | hashmap = [] |
237 | 7bd1d3b5 | Giorgos Verigakis | backend = self.backend
|
238 | c23d211a | Giorgos Verigakis | blocksize = backend.block_size |
239 | 1e28ba40 | Christos Stavrakakis | |
240 | c23d211a | Giorgos Verigakis | data = f.read(blocksize) |
241 | 7bd1d3b5 | Giorgos Verigakis | while data:
|
242 | c23d211a | Giorgos Verigakis | hash = backend.put_block(data) |
243 | f5afd99b | Giorgos Verigakis | hashmap.append(hash)
|
244 | c23d211a | Giorgos Verigakis | bytes += len(data) |
245 | c23d211a | Giorgos Verigakis | data = f.read(blocksize) |
246 | 1e28ba40 | Christos Stavrakakis | |
247 | c23d211a | Giorgos Verigakis | if size and size != bytes: |
248 | c23d211a | Giorgos Verigakis | raise BackendException("Invalid size") |
249 | 1e28ba40 | Christos Stavrakakis | |
250 | c23d211a | Giorgos Verigakis | return hashmap, bytes |
251 | 1e28ba40 | Christos Stavrakakis | |
252 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
253 | 7bd1d3b5 | Giorgos Verigakis | def _update(self, location, size, hashmap, meta, permissions): |
254 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
255 | 7bd1d3b5 | Giorgos Verigakis | self.backend.update_object_hashmap(self.user, account, container, |
256 | cc92b70f | Christos Stavrakakis | object, size, hashmap, '', |
257 | cc92b70f | Christos Stavrakakis | PLANKTON_DOMAIN, |
258 | cc92b70f | Christos Stavrakakis | permissions=permissions) |
259 | 0a72907b | Giorgos Verigakis | self._update_meta(location, meta, replace=True) |
260 | 1e28ba40 | Christos Stavrakakis | |
261 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
262 | 0a72907b | Giorgos Verigakis | def _update_meta(self, location, meta, replace=False): |
263 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
264 | 1e28ba40 | Christos Stavrakakis | |
265 | bfd9f988 | Giorgos Verigakis | prefixed = {} |
266 | 0a72907b | Giorgos Verigakis | for key, val in meta.items(): |
267 | bfd9f988 | Giorgos Verigakis | if key == 'properties': |
268 | bfd9f988 | Giorgos Verigakis | val = json.dumps(val) |
269 | bfd9f988 | Giorgos Verigakis | if key in PLANKTON_META: |
270 | bfd9f988 | Giorgos Verigakis | prefixed[PLANKTON_PREFIX + key] = val |
271 | 1e28ba40 | Christos Stavrakakis | |
272 | bfd9f988 | Giorgos Verigakis | self.backend.update_object_meta(self.user, account, container, object, |
273 | cc92b70f | Christos Stavrakakis | PLANKTON_DOMAIN, prefixed, replace) |
274 | 1e28ba40 | Christos Stavrakakis | |
275 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
276 | 7bd1d3b5 | Giorgos Verigakis | def _update_permissions(self, location, permissions): |
277 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
278 | 7bd1d3b5 | Giorgos Verigakis | self.backend.update_object_permissions(self.user, account, container, |
279 | cc92b70f | Christos Stavrakakis | object, permissions)
|
280 | 1e28ba40 | Christos Stavrakakis | |
281 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
282 | f5afd99b | Giorgos Verigakis | def add_user(self, image_id, user): |
283 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
284 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
285 | 1e28ba40 | Christos Stavrakakis | |
286 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
287 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
288 | f5afd99b | Giorgos Verigakis | read = set(permissions.get('read', [])) |
289 | f5afd99b | Giorgos Verigakis | read.add(user) |
290 | f5afd99b | Giorgos Verigakis | permissions['read'] = list(read) |
291 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
292 | 1e28ba40 | Christos Stavrakakis | |
293 | f5afd99b | Giorgos Verigakis | def close(self): |
294 | f5afd99b | Giorgos Verigakis | self.backend.close()
|
295 | 1e28ba40 | Christos Stavrakakis | |
296 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
297 | 6ef51e9f | Giorgos Verigakis | def delete(self, image_id): |
298 | 6ef51e9f | Giorgos Verigakis | image = self.get_image(image_id)
|
299 | 6ef51e9f | Giorgos Verigakis | account, container, object = split_location(image['location'])
|
300 | 6ef51e9f | Giorgos Verigakis | self.backend.delete_object(self.user, account, container, object) |
301 | 1e28ba40 | Christos Stavrakakis | |
302 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
303 | 7bd1d3b5 | Giorgos Verigakis | def get_data(self, location): |
304 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
305 | 7bd1d3b5 | Giorgos Verigakis | size, hashmap = self.backend.get_object_hashmap(self.user, account, |
306 | cc92b70f | Christos Stavrakakis | container, object)
|
307 | f5afd99b | Giorgos Verigakis | data = ''.join(self.backend.get_block(hash) for hash in hashmap) |
308 | f5afd99b | Giorgos Verigakis | assert len(data) == size |
309 | f5afd99b | Giorgos Verigakis | return data
|
310 | 1e28ba40 | Christos Stavrakakis | |
311 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
312 | bfd9f988 | Giorgos Verigakis | def get_image(self, image_id): |
313 | 0a72907b | Giorgos Verigakis | try:
|
314 | 0a72907b | Giorgos Verigakis | account, container, object = self.backend.get_uuid(self.user, |
315 | cc92b70f | Christos Stavrakakis | image_id) |
316 | 0a72907b | Giorgos Verigakis | except NameError: |
317 | 0a72907b | Giorgos Verigakis | return None |
318 | 1e28ba40 | Christos Stavrakakis | |
319 | 0a72907b | Giorgos Verigakis | location = get_location(account, container, object)
|
320 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
321 | 1e28ba40 | Christos Stavrakakis | |
322 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
323 | aed77afe | Christos Stavrakakis | def _iter(self, public=False, filters=None, shared_from=None): |
324 | d19e8f77 | Giorgos Verigakis | filters = filters or {}
|
325 | 1e28ba40 | Christos Stavrakakis | |
326 | aed77afe | Christos Stavrakakis | # Fix keys
|
327 | bfd9f988 | Giorgos Verigakis | keys = [PLANKTON_PREFIX + 'name']
|
328 | 434d1e68 | Giorgos Verigakis | size_range = (None, None) |
329 | f5afd99b | Giorgos Verigakis | for key, val in filters.items(): |
330 | 0a72907b | Giorgos Verigakis | if key == 'size_min': |
331 | c3bcaeff | Stratos Psomadakis | size_range = (val, size_range[1])
|
332 | 0a72907b | Giorgos Verigakis | elif key == 'size_max': |
333 | c3bcaeff | Stratos Psomadakis | size_range = (size_range[0], val)
|
334 | f5afd99b | Giorgos Verigakis | else:
|
335 | 434d1e68 | Giorgos Verigakis | keys.append('%s = %s' % (PLANKTON_PREFIX + key, val))
|
336 | 1e28ba40 | Christos Stavrakakis | |
337 | aed77afe | Christos Stavrakakis | backend = self.backend
|
338 | aed77afe | Christos Stavrakakis | if shared_from:
|
339 | aed77afe | Christos Stavrakakis | # To get shared images, we connect as shared_from member and
|
340 | aed77afe | Christos Stavrakakis | # get the list shared by us
|
341 | aed77afe | Christos Stavrakakis | user = shared_from |
342 | aed77afe | Christos Stavrakakis | else:
|
343 | aed77afe | Christos Stavrakakis | user = None if public else self.user |
344 | aed77afe | Christos Stavrakakis | accounts = backend.list_accounts(user) |
345 | aed77afe | Christos Stavrakakis | |
346 | aed77afe | Christos Stavrakakis | for account in accounts: |
347 | aed77afe | Christos Stavrakakis | for container in backend.list_containers(user, account, |
348 | 0a72907b | Giorgos Verigakis | shared=True):
|
349 | aed77afe | Christos Stavrakakis | for path, _ in backend.list_objects(user, account, container, |
350 | aed77afe | Christos Stavrakakis | domain=PLANKTON_DOMAIN, |
351 | aed77afe | Christos Stavrakakis | keys=keys, shared=True,
|
352 | aed77afe | Christos Stavrakakis | size_range=size_range): |
353 | 0a72907b | Giorgos Verigakis | location = get_location(account, container, path) |
354 | 0a72907b | Giorgos Verigakis | image = self._get_image(location)
|
355 | 0a72907b | Giorgos Verigakis | if image:
|
356 | 0a72907b | Giorgos Verigakis | yield image
|
357 | 1e28ba40 | Christos Stavrakakis | |
358 | aed77afe | Christos Stavrakakis | def iter(self, filters=None): |
359 | aed77afe | Christos Stavrakakis | """Iter over all images available to the user"""
|
360 | aed77afe | Christos Stavrakakis | return self._iter(filters=filters) |
361 | 1e28ba40 | Christos Stavrakakis | |
362 | aed77afe | Christos Stavrakakis | def iter_public(self, filters=None): |
363 | aed77afe | Christos Stavrakakis | """Iter over public images"""
|
364 | aed77afe | Christos Stavrakakis | return self._iter(public=True, filters=filters) |
365 | 1e28ba40 | Christos Stavrakakis | |
366 | aed77afe | Christos Stavrakakis | def iter_shared(self, filters=None, member=None): |
367 | aed77afe | Christos Stavrakakis | """Iter over images shared to member"""
|
368 | d0e8984d | Christos Stavrakakis | return self._iter(filters=filters, shared_from=member) |
369 | 1e28ba40 | Christos Stavrakakis | |
370 | aed77afe | Christos Stavrakakis | def list(self, filters=None, params={}): |
371 | aed77afe | Christos Stavrakakis | """Return all images available to the user"""
|
372 | aed77afe | Christos Stavrakakis | images = list(self.iter(filters)) |
373 | aed77afe | Christos Stavrakakis | key = itemgetter(params.get('sort_key', 'created_at')) |
374 | aed77afe | Christos Stavrakakis | reverse = params.get('sort_dir', 'desc') == 'desc' |
375 | aed77afe | Christos Stavrakakis | images.sort(key=key, reverse=reverse) |
376 | aed77afe | Christos Stavrakakis | return images
|
377 | 1e28ba40 | Christos Stavrakakis | |
378 | aed77afe | Christos Stavrakakis | def list_public(self, filters, params={}): |
379 | aed77afe | Christos Stavrakakis | """Return public images"""
|
380 | f5afd99b | Giorgos Verigakis | images = list(self.iter_public(filters)) |
381 | 7bd1d3b5 | Giorgos Verigakis | key = itemgetter(params.get('sort_key', 'created_at')) |
382 | 7bd1d3b5 | Giorgos Verigakis | reverse = params.get('sort_dir', 'desc') == 'desc' |
383 | f5afd99b | Giorgos Verigakis | images.sort(key=key, reverse=reverse) |
384 | f5afd99b | Giorgos Verigakis | return images
|
385 | 1e28ba40 | Christos Stavrakakis | |
386 | f5afd99b | Giorgos Verigakis | def list_users(self, image_id): |
387 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
388 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
389 | 1e28ba40 | Christos Stavrakakis | |
390 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(image['location']) |
391 | f5afd99b | Giorgos Verigakis | return [user for user in permissions.get('read', []) if user != '*'] |
392 | 1e28ba40 | Christos Stavrakakis | |
393 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
394 | c23d211a | Giorgos Verigakis | def put(self, name, f, params): |
395 | 7bd1d3b5 | Giorgos Verigakis | assert 'checksum' not in params, "Passing a checksum is not supported" |
396 | 7bd1d3b5 | Giorgos Verigakis | assert 'id' not in params, "Passing an ID is not supported" |
397 | 7bd1d3b5 | Giorgos Verigakis | assert params.pop('store', 'pithos') == 'pithos', "Invalid store" |
398 | cc92b70f | Christos Stavrakakis | disk_format = params.setdefault('disk_format',
|
399 | cc92b70f | Christos Stavrakakis | settings.DEFAULT_DISK_FORMAT) |
400 | cc92b70f | Christos Stavrakakis | assert disk_format in settings.ALLOWED_DISK_FORMATS,\ |
401 | cc92b70f | Christos Stavrakakis | "Invalid disk_format"
|
402 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('container_format', |
403 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_CONTAINER_FORMAT) in \
|
404 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_CONTAINER_FORMATS, "Invalid container_format"
|
405 | 1e28ba40 | Christos Stavrakakis | |
406 | bfd9f988 | Giorgos Verigakis | container = settings.DEFAULT_PLANKTON_CONTAINER |
407 | c23d211a | Giorgos Verigakis | filename = params.pop('filename', name)
|
408 | bfd9f988 | Giorgos Verigakis | location = 'pithos://%s/%s/%s' % (self.user, container, filename) |
409 | f5afd99b | Giorgos Verigakis | is_public = params.pop('is_public', False) |
410 | 921355f8 | Giorgos Verigakis | permissions = {'read': ['*']} if is_public else {} |
411 | c23d211a | Giorgos Verigakis | size = params.pop('size', None) |
412 | 1e28ba40 | Christos Stavrakakis | |
413 | c23d211a | Giorgos Verigakis | hashmap, size = self._store(f, size)
|
414 | 1e28ba40 | Christos Stavrakakis | |
415 | 7bd1d3b5 | Giorgos Verigakis | meta = {} |
416 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
417 | 0a72907b | Giorgos Verigakis | meta.update(name=name, status='available', **params)
|
418 | 1e28ba40 | Christos Stavrakakis | |
419 | 7bd1d3b5 | Giorgos Verigakis | self._update(location, size, hashmap, meta, permissions)
|
420 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
421 | 1e28ba40 | Christos Stavrakakis | |
422 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
423 | f5afd99b | Giorgos Verigakis | def register(self, name, location, params): |
424 | 7bd1d3b5 | Giorgos Verigakis | assert 'id' not in params, "Passing an ID is not supported" |
425 | 7bd1d3b5 | Giorgos Verigakis | assert location.startswith('pithos://'), "Invalid location" |
426 | 7bd1d3b5 | Giorgos Verigakis | assert params.pop('store', 'pithos') == 'pithos', "Invalid store" |
427 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('disk_format', |
428 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_DISK_FORMAT) in \
|
429 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_DISK_FORMATS, "Invalid disk_format"
|
430 | 7bd1d3b5 | Giorgos Verigakis | assert params.setdefault('container_format', |
431 | 7bd1d3b5 | Giorgos Verigakis | settings.DEFAULT_CONTAINER_FORMAT) in \
|
432 | 7bd1d3b5 | Giorgos Verigakis | settings.ALLOWED_CONTAINER_FORMATS, "Invalid container_format"
|
433 | 1e28ba40 | Christos Stavrakakis | |
434 | 1e28ba40 | Christos Stavrakakis | # user = self.user
|
435 | 7bd1d3b5 | Giorgos Verigakis | account, container, object = split_location(location) |
436 | 1e28ba40 | Christos Stavrakakis | |
437 | 7bd1d3b5 | Giorgos Verigakis | meta = self._get_meta(location)
|
438 | 06c8fb11 | Giorgos Verigakis | assert meta, "File not found" |
439 | 1e28ba40 | Christos Stavrakakis | |
440 | bfd9f988 | Giorgos Verigakis | size = int(params.pop('size', meta['bytes'])) |
441 | 0a72907b | Giorgos Verigakis | if size != meta['bytes']: |
442 | c34de90f | Giorgos Verigakis | raise BackendException("Invalid size") |
443 | 1e28ba40 | Christos Stavrakakis | |
444 | 0a72907b | Giorgos Verigakis | checksum = params.pop('checksum', meta['hash']) |
445 | 0a72907b | Giorgos Verigakis | if checksum != meta['hash']: |
446 | c34de90f | Giorgos Verigakis | raise BackendException("Invalid checksum") |
447 | 1e28ba40 | Christos Stavrakakis | |
448 | f5afd99b | Giorgos Verigakis | is_public = params.pop('is_public', False) |
449 | aed77afe | Christos Stavrakakis | if is_public:
|
450 | aed77afe | Christos Stavrakakis | permissions = {'read': ['*']} |
451 | aed77afe | Christos Stavrakakis | else:
|
452 | aed77afe | Christos Stavrakakis | permissions = {'read': [self.user]} |
453 | 1e28ba40 | Christos Stavrakakis | |
454 | f5afd99b | Giorgos Verigakis | meta = {} |
455 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
456 | 0a72907b | Giorgos Verigakis | meta.update(name=name, status='available', **params)
|
457 | 1e28ba40 | Christos Stavrakakis | |
458 | 7bd1d3b5 | Giorgos Verigakis | self._update_meta(location, meta)
|
459 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
460 | 0a72907b | Giorgos Verigakis | return self._get_image(location) |
461 | 1e28ba40 | Christos Stavrakakis | |
462 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
463 | f5afd99b | Giorgos Verigakis | def remove_user(self, image_id, user): |
464 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
465 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
466 | 1e28ba40 | Christos Stavrakakis | |
467 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
468 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
469 | f5afd99b | Giorgos Verigakis | try:
|
470 | f5afd99b | Giorgos Verigakis | permissions.get('read', []).remove(user)
|
471 | f5afd99b | Giorgos Verigakis | except ValueError: |
472 | f5afd99b | Giorgos Verigakis | return # User did not have access anyway |
473 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
474 | 1e28ba40 | Christos Stavrakakis | |
475 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
476 | f5afd99b | Giorgos Verigakis | def replace_users(self, image_id, users): |
477 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
478 | f5afd99b | Giorgos Verigakis | assert image, "Image not found" |
479 | 1e28ba40 | Christos Stavrakakis | |
480 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
481 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
482 | f5afd99b | Giorgos Verigakis | permissions['read'] = users
|
483 | f5afd99b | Giorgos Verigakis | if image.get('is_public', False): |
484 | f5afd99b | Giorgos Verigakis | permissions['read'].append('*') |
485 | 7bd1d3b5 | Giorgos Verigakis | self._update_permissions(location, permissions)
|
486 | 1e28ba40 | Christos Stavrakakis | |
487 | 2db7d9df | Christos Stavrakakis | @handle_backend_exceptions
|
488 | 7bd1d3b5 | Giorgos Verigakis | def update(self, image_id, params): |
489 | bfd9f988 | Giorgos Verigakis | image = self.get_image(image_id)
|
490 | 15137c54 | Giorgos Verigakis | assert image, "Image not found" |
491 | 1e28ba40 | Christos Stavrakakis | |
492 | 7bd1d3b5 | Giorgos Verigakis | location = image['location']
|
493 | 7bd1d3b5 | Giorgos Verigakis | is_public = params.pop('is_public', None) |
494 | 7e00b33e | Giorgos Verigakis | if is_public is not None: |
495 | 7bd1d3b5 | Giorgos Verigakis | permissions = self._get_permissions(location)
|
496 | f5afd99b | Giorgos Verigakis | read = set(permissions.get('read', [])) |
497 | 7e00b33e | Giorgos Verigakis | if is_public:
|
498 | f5afd99b | Giorgos Verigakis | read.add('*')
|
499 | 7e00b33e | Giorgos Verigakis | else:
|
500 | f5afd99b | Giorgos Verigakis | read.discard('*')
|
501 | f5afd99b | Giorgos Verigakis | permissions['read'] = list(read) |
502 | 7bd1d3b5 | Giorgos Verigakis | self.backend._update_permissions(location, permissions)
|
503 | 1e28ba40 | Christos Stavrakakis | |
504 | 7bd1d3b5 | Giorgos Verigakis | meta = {} |
505 | 7bd1d3b5 | Giorgos Verigakis | meta['properties'] = params.pop('properties', {}) |
506 | 7bd1d3b5 | Giorgos Verigakis | meta.update(**params) |
507 | 1e28ba40 | Christos Stavrakakis | |
508 | 7bd1d3b5 | Giorgos Verigakis | self._update_meta(location, meta)
|
509 | bfd9f988 | Giorgos Verigakis | return self.get_image(image_id) |