root / snf-pithos-app / pithos / api / util.py @ 890c2065
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1 | 2e662088 | Antony Chazapis | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | 2715ade4 | Sofia Papagiannaki | #
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3 | 5635f9ef | Antony Chazapis | # Redistribution and use in source and binary forms, with or
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4 | 5635f9ef | Antony Chazapis | # without modification, are permitted provided that the following
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5 | 5635f9ef | Antony Chazapis | # conditions are met:
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6 | 2715ade4 | Sofia Papagiannaki | #
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7 | 5635f9ef | Antony Chazapis | # 1. Redistributions of source code must retain the above
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8 | 5635f9ef | Antony Chazapis | # copyright notice, this list of conditions and the following
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9 | 5635f9ef | Antony Chazapis | # disclaimer.
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10 | 2715ade4 | Sofia Papagiannaki | #
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11 | 5635f9ef | Antony Chazapis | # 2. Redistributions in binary form must reproduce the above
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12 | 5635f9ef | Antony Chazapis | # copyright notice, this list of conditions and the following
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13 | 5635f9ef | Antony Chazapis | # disclaimer in the documentation and/or other materials
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14 | 5635f9ef | Antony Chazapis | # provided with the distribution.
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15 | 2715ade4 | Sofia Papagiannaki | #
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16 | 5635f9ef | Antony Chazapis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 5635f9ef | Antony Chazapis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 5635f9ef | Antony Chazapis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 5635f9ef | Antony Chazapis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 5635f9ef | Antony Chazapis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 5635f9ef | Antony Chazapis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 5635f9ef | Antony Chazapis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 5635f9ef | Antony Chazapis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 5635f9ef | Antony Chazapis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 5635f9ef | Antony Chazapis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 5635f9ef | Antony Chazapis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 5635f9ef | Antony Chazapis | # POSSIBILITY OF SUCH DAMAGE.
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28 | 2715ade4 | Sofia Papagiannaki | #
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29 | 5635f9ef | Antony Chazapis | # The views and conclusions contained in the software and
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30 | 5635f9ef | Antony Chazapis | # documentation are those of the authors and should not be
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31 | 5635f9ef | Antony Chazapis | # interpreted as representing official policies, either expressed
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32 | 5635f9ef | Antony Chazapis | # or implied, of GRNET S.A.
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33 | 5635f9ef | Antony Chazapis | |
34 | b956618e | Antony Chazapis | from functools import wraps |
35 | b956618e | Antony Chazapis | from time import time |
36 | b956618e | Antony Chazapis | from traceback import format_exc |
37 | b956618e | Antony Chazapis | from wsgiref.handlers import format_date_time |
38 | 0d4ea090 | Antony Chazapis | from binascii import hexlify, unhexlify |
39 | e11087c2 | Antony Chazapis | from datetime import datetime, tzinfo, timedelta |
40 | 9fefc052 | Antony Chazapis | from urllib import quote, unquote |
41 | b956618e | Antony Chazapis | |
42 | b956618e | Antony Chazapis | from django.conf import settings |
43 | b956618e | Antony Chazapis | from django.http import HttpResponse |
44 | 6b6b6c1e | Antony Chazapis | from django.template.loader import render_to_string |
45 | 1993fea9 | Antony Chazapis | from django.utils import simplejson as json |
46 | 22dab079 | Antony Chazapis | from django.utils.http import http_date, parse_etags |
47 | fb064032 | Antony Chazapis | from django.utils.encoding import smart_unicode, smart_str |
48 | 817890f2 | Antony Chazapis | from django.core.files.uploadhandler import FileUploadHandler |
49 | 817890f2 | Antony Chazapis | from django.core.files.uploadedfile import UploadedFile |
50 | b956618e | Antony Chazapis | |
51 | 6e147ecc | Antony Chazapis | from synnefo.lib.parsedate import parse_http_date_safe, parse_http_date |
52 | dfdf4802 | Sofia Papagiannaki | from synnefo.lib.astakos import get_user |
53 | 5a96180b | Antony Chazapis | |
54 | 2715ade4 | Sofia Papagiannaki | from pithos.api.faults import ( |
55 | 2715ade4 | Sofia Papagiannaki | Fault, NotModified, BadRequest, Unauthorized, Forbidden, ItemNotFound, |
56 | 2715ade4 | Sofia Papagiannaki | Conflict, LengthRequired, PreconditionFailed, RequestEntityTooLarge, |
57 | 2715ade4 | Sofia Papagiannaki | RangeNotSatisfiable, InternalServerError, NotImplemented)
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58 | bb4eafc6 | Antony Chazapis | from pithos.api.short_url import encode_url |
59 | a7dff008 | Antony Chazapis | from pithos.api.settings import (BACKEND_DB_MODULE, BACKEND_DB_CONNECTION, |
60 | 761c2b3c | root | BACKEND_BLOCK_MODULE, BACKEND_BLOCK_PATH, |
61 | 761c2b3c | root | BACKEND_BLOCK_UMASK, |
62 | f4fbb0fa | Sofia Papagiannaki | BACKEND_QUEUE_MODULE, BACKEND_QUEUE_HOSTS, |
63 | f4fbb0fa | Sofia Papagiannaki | BACKEND_QUEUE_EXCHANGE, |
64 | 3173699c | Sofia Papagiannaki | QUOTAHOLDER_URL, QUOTAHOLDER_TOKEN, |
65 | 3173699c | Sofia Papagiannaki | BACKEND_QUOTA, BACKEND_VERSIONING, |
66 | b1dadd0e | Sofia Papagiannaki | BACKEND_FREE_VERSIONING, |
67 | 761c2b3c | root | AUTHENTICATION_URL, AUTHENTICATION_USERS, |
68 | 890c2065 | Sofia Papagiannaki | SERVICE_TOKEN, COOKIE_NAME, USER_CATALOG_URL, |
69 | 47462eda | Filippos Giannakos | RADOS_STORAGE, RADOS_POOL_BLOCKS, |
70 | 47462eda | Filippos Giannakos | RADOS_POOL_MAPS) |
71 | 39593b2b | Giorgos Verigakis | from pithos.backends import connect_backend |
72 | 32454501 | Sofia Papagiannaki | from pithos.backends.base import (NotAllowedError, QuotaError, ItemNotExists, |
73 | 32454501 | Sofia Papagiannaki | VersionNotExists) |
74 | 890c2065 | Sofia Papagiannaki | from synnefo.lib.astakos import (get_user_uuid, get_displayname, |
75 | 890c2065 | Sofia Papagiannaki | get_uuids, get_displaynames) |
76 | b956618e | Antony Chazapis | |
77 | b956618e | Antony Chazapis | import logging |
78 | 22dab079 | Antony Chazapis | import re |
79 | cbfb6636 | Sofia Papagiannaki | import hashlib |
80 | 7bef5750 | Antony Chazapis | import uuid |
81 | c48acbfd | Sofia Papagiannaki | import decimal |
82 | 8c793655 | Antony Chazapis | |
83 | b956618e | Antony Chazapis | |
84 | b956618e | Antony Chazapis | logger = logging.getLogger(__name__) |
85 | b956618e | Antony Chazapis | |
86 | b956618e | Antony Chazapis | |
87 | e11087c2 | Antony Chazapis | class UTC(tzinfo): |
88 | 2715ade4 | Sofia Papagiannaki | def utcoffset(self, dt): |
89 | 2715ade4 | Sofia Papagiannaki | return timedelta(0) |
90 | e11087c2 | Antony Chazapis | |
91 | 2715ade4 | Sofia Papagiannaki | def tzname(self, dt): |
92 | 2715ade4 | Sofia Papagiannaki | return 'UTC' |
93 | e11087c2 | Antony Chazapis | |
94 | 2715ade4 | Sofia Papagiannaki | def dst(self, dt): |
95 | 2715ade4 | Sofia Papagiannaki | return timedelta(0) |
96 | e11087c2 | Antony Chazapis | |
97 | e11087c2 | Antony Chazapis | |
98 | c48acbfd | Sofia Papagiannaki | def json_encode_decimal(obj): |
99 | c48acbfd | Sofia Papagiannaki | if isinstance(obj, decimal.Decimal): |
100 | c48acbfd | Sofia Papagiannaki | return str(obj) |
101 | c48acbfd | Sofia Papagiannaki | raise TypeError(repr(obj) + " is not JSON serializable") |
102 | c48acbfd | Sofia Papagiannaki | |
103 | 2715ade4 | Sofia Papagiannaki | |
104 | e11087c2 | Antony Chazapis | def isoformat(d): |
105 | 2715ade4 | Sofia Papagiannaki | """Return an ISO8601 date string that includes a timezone."""
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106 | 2715ade4 | Sofia Papagiannaki | |
107 | 2715ade4 | Sofia Papagiannaki | return d.replace(tzinfo=UTC()).isoformat()
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108 | e11087c2 | Antony Chazapis | |
109 | e11087c2 | Antony Chazapis | |
110 | 804e8fe7 | Antony Chazapis | def rename_meta_key(d, old, new): |
111 | 804e8fe7 | Antony Chazapis | if old not in d: |
112 | 804e8fe7 | Antony Chazapis | return
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113 | 804e8fe7 | Antony Chazapis | d[new] = d[old] |
114 | 804e8fe7 | Antony Chazapis | del(d[old])
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115 | 804e8fe7 | Antony Chazapis | |
116 | 2715ade4 | Sofia Papagiannaki | |
117 | 02c0c3fa | Antony Chazapis | def printable_header_dict(d): |
118 | b956618e | Antony Chazapis | """Format a meta dictionary for printing out json/xml.
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119 | 2715ade4 | Sofia Papagiannaki |
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120 | 804e8fe7 | Antony Chazapis | Convert all keys to lower case and replace dashes with underscores.
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121 | 804e8fe7 | Antony Chazapis | Format 'last_modified' timestamp.
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122 | b956618e | Antony Chazapis | """
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123 | 2715ade4 | Sofia Papagiannaki | |
124 | 371d907a | Antony Chazapis | if 'last_modified' in d and d['last_modified']: |
125 | 2715ade4 | Sofia Papagiannaki | d['last_modified'] = isoformat(
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126 | 2715ade4 | Sofia Papagiannaki | datetime.fromtimestamp(d['last_modified']))
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127 | b956618e | Antony Chazapis | return dict([(k.lower().replace('-', '_'), v) for k, v in d.iteritems()]) |
128 | b956618e | Antony Chazapis | |
129 | 2715ade4 | Sofia Papagiannaki | |
130 | 02c0c3fa | Antony Chazapis | def format_header_key(k): |
131 | 58a6c894 | Antony Chazapis | """Convert underscores to dashes and capitalize intra-dash strings."""
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132 | b956618e | Antony Chazapis | return '-'.join([x.capitalize() for x in k.replace('_', '-').split('-')]) |
133 | b956618e | Antony Chazapis | |
134 | 2715ade4 | Sofia Papagiannaki | |
135 | 02c0c3fa | Antony Chazapis | def get_header_prefix(request, prefix): |
136 | 02c0c3fa | Antony Chazapis | """Get all prefix-* request headers in a dict. Reformat keys with format_header_key()."""
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137 | 2715ade4 | Sofia Papagiannaki | |
138 | b956618e | Antony Chazapis | prefix = 'HTTP_' + prefix.upper().replace('-', '_') |
139 | 3ab38c43 | Antony Chazapis | # TODO: Document or remove '~' replacing.
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140 | 3ab38c43 | Antony Chazapis | return dict([(format_header_key(k[5:]), v.replace('~', '')) for k, v in request.META.iteritems() if k.startswith(prefix) and len(k) > len(prefix)]) |
141 | 02c0c3fa | Antony Chazapis | |
142 | 2715ade4 | Sofia Papagiannaki | |
143 | 62bf8157 | Antony Chazapis | def check_meta_headers(meta): |
144 | 62bf8157 | Antony Chazapis | if len(meta) > 90: |
145 | 62bf8157 | Antony Chazapis | raise BadRequest('Too many headers.') |
146 | 62bf8157 | Antony Chazapis | for k, v in meta.iteritems(): |
147 | 62bf8157 | Antony Chazapis | if len(k) > 128: |
148 | 62bf8157 | Antony Chazapis | raise BadRequest('Header name too large.') |
149 | 62bf8157 | Antony Chazapis | if len(v) > 256: |
150 | 62bf8157 | Antony Chazapis | raise BadRequest('Header value too large.') |
151 | 62bf8157 | Antony Chazapis | |
152 | 2715ade4 | Sofia Papagiannaki | |
153 | 02c0c3fa | Antony Chazapis | def get_account_headers(request): |
154 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Account-Meta-')
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155 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
156 | 02c0c3fa | Antony Chazapis | groups = {} |
157 | 02c0c3fa | Antony Chazapis | for k, v in get_header_prefix(request, 'X-Account-Group-').iteritems(): |
158 | 02c0c3fa | Antony Chazapis | n = k[16:].lower()
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159 | 02c0c3fa | Antony Chazapis | if '-' in n or '_' in n: |
160 | 02c0c3fa | Antony Chazapis | raise BadRequest('Bad characters in group name') |
161 | 02c0c3fa | Antony Chazapis | groups[n] = v.replace(' ', '').split(',') |
162 | 40d6b76d | Antony Chazapis | while '' in groups[n]: |
163 | 02c0c3fa | Antony Chazapis | groups[n].remove('')
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164 | 02c0c3fa | Antony Chazapis | return meta, groups
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165 | 02c0c3fa | Antony Chazapis | |
166 | 2715ade4 | Sofia Papagiannaki | |
167 | 4d366a03 | Sofia Papagiannaki | def put_account_translation_headers(response, accounts): |
168 | 4d366a03 | Sofia Papagiannaki | for x in accounts: |
169 | 4d366a03 | Sofia Papagiannaki | k = smart_str('X-Account-Presentation-%s' % x, strings_only=True) |
170 | 4d366a03 | Sofia Papagiannaki | v = smart_str(retrieve_username(x), strings_only=True)
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171 | 4d366a03 | Sofia Papagiannaki | response[k] = v |
172 | 4d366a03 | Sofia Papagiannaki | |
173 | 4d366a03 | Sofia Papagiannaki | |
174 | 647a5f48 | Antony Chazapis | def put_account_headers(response, meta, groups, policy): |
175 | f6c97079 | Antony Chazapis | if 'count' in meta: |
176 | f6c97079 | Antony Chazapis | response['X-Account-Container-Count'] = meta['count'] |
177 | f6c97079 | Antony Chazapis | if 'bytes' in meta: |
178 | f6c97079 | Antony Chazapis | response['X-Account-Bytes-Used'] = meta['bytes'] |
179 | d065f612 | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
180 | b956618e | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Account-Meta-')]: |
181 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
182 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
183 | 83dd59c5 | Antony Chazapis | if 'until_timestamp' in meta: |
184 | 2715ade4 | Sofia Papagiannaki | response['X-Account-Until-Timestamp'] = http_date(
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185 | 2715ade4 | Sofia Papagiannaki | int(meta['until_timestamp'])) |
186 | 02c0c3fa | Antony Chazapis | for k, v in groups.iteritems(): |
187 | e7b51248 | Sofia Papagiannaki | k = smart_str(k, strings_only=True)
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188 | e7b51248 | Sofia Papagiannaki | k = format_header_key('X-Account-Group-' + k)
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189 | e7b51248 | Sofia Papagiannaki | v = smart_str(','.join(v), strings_only=True) |
190 | e7b51248 | Sofia Papagiannaki | response[k] = v |
191 | 647a5f48 | Antony Chazapis | for k, v in policy.iteritems(): |
192 | 647a5f48 | Antony Chazapis | response[smart_str(format_header_key('X-Account-Policy-' + k), strings_only=True)] = smart_str(v, strings_only=True) |
193 | 647a5f48 | Antony Chazapis | |
194 | 2715ade4 | Sofia Papagiannaki | |
195 | 02c0c3fa | Antony Chazapis | def get_container_headers(request): |
196 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Container-Meta-')
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197 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
198 | 3ab38c43 | Antony Chazapis | policy = dict([(k[19:].lower(), v.replace(' ', '')) for k, v in get_header_prefix(request, 'X-Container-Policy-').iteritems()]) |
199 | 3ab38c43 | Antony Chazapis | return meta, policy
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200 | b956618e | Antony Chazapis | |
201 | 2715ade4 | Sofia Papagiannaki | |
202 | 39593b2b | Giorgos Verigakis | def put_container_headers(request, response, meta, policy): |
203 | f6c97079 | Antony Chazapis | if 'count' in meta: |
204 | f6c97079 | Antony Chazapis | response['X-Container-Object-Count'] = meta['count'] |
205 | f6c97079 | Antony Chazapis | if 'bytes' in meta: |
206 | f6c97079 | Antony Chazapis | response['X-Container-Bytes-Used'] = meta['bytes'] |
207 | 58a6c894 | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
208 | b956618e | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Container-Meta-')]: |
209 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
210 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
211 | 2715ade4 | Sofia Papagiannaki | l = [smart_str(x, strings_only=True) for x in meta['object_meta'] |
212 | 2715ade4 | Sofia Papagiannaki | if x.startswith('X-Object-Meta-')] |
213 | e7b51248 | Sofia Papagiannaki | response['X-Container-Object-Meta'] = ','.join([x[14:] for x in l]) |
214 | 39593b2b | Giorgos Verigakis | response['X-Container-Block-Size'] = request.backend.block_size
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215 | 39593b2b | Giorgos Verigakis | response['X-Container-Block-Hash'] = request.backend.hash_algorithm
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216 | 83dd59c5 | Antony Chazapis | if 'until_timestamp' in meta: |
217 | 2715ade4 | Sofia Papagiannaki | response['X-Container-Until-Timestamp'] = http_date(
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218 | 2715ade4 | Sofia Papagiannaki | int(meta['until_timestamp'])) |
219 | 3ab38c43 | Antony Chazapis | for k, v in policy.iteritems(): |
220 | e7b51248 | Sofia Papagiannaki | response[smart_str(format_header_key('X-Container-Policy-' + k), strings_only=True)] = smart_str(v, strings_only=True) |
221 | b956618e | Antony Chazapis | |
222 | 2715ade4 | Sofia Papagiannaki | |
223 | 02c0c3fa | Antony Chazapis | def get_object_headers(request): |
224 | 66ce2ca5 | Antony Chazapis | content_type = request.META.get('CONTENT_TYPE', None) |
225 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Object-Meta-')
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226 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
227 | b956618e | Antony Chazapis | if request.META.get('HTTP_CONTENT_ENCODING'): |
228 | b956618e | Antony Chazapis | meta['Content-Encoding'] = request.META['HTTP_CONTENT_ENCODING'] |
229 | 22dab079 | Antony Chazapis | if request.META.get('HTTP_CONTENT_DISPOSITION'): |
230 | 22dab079 | Antony Chazapis | meta['Content-Disposition'] = request.META['HTTP_CONTENT_DISPOSITION'] |
231 | b956618e | Antony Chazapis | if request.META.get('HTTP_X_OBJECT_MANIFEST'): |
232 | b956618e | Antony Chazapis | meta['X-Object-Manifest'] = request.META['HTTP_X_OBJECT_MANIFEST'] |
233 | 66ce2ca5 | Antony Chazapis | return content_type, meta, get_sharing(request), get_public(request)
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234 | b956618e | Antony Chazapis | |
235 | 2715ade4 | Sofia Papagiannaki | |
236 | 3ab38c43 | Antony Chazapis | def put_object_headers(response, meta, restricted=False): |
237 | 33b4e4a6 | Antony Chazapis | response['ETag'] = meta['checksum'] |
238 | b956618e | Antony Chazapis | response['Content-Length'] = meta['bytes'] |
239 | 66ce2ca5 | Antony Chazapis | response['Content-Type'] = meta.get('type', 'application/octet-stream') |
240 | b956618e | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
241 | 3ab38c43 | Antony Chazapis | if not restricted: |
242 | 4a1c29ea | Antony Chazapis | response['X-Object-Hash'] = meta['hash'] |
243 | 37bee317 | Antony Chazapis | response['X-Object-UUID'] = meta['uuid'] |
244 | 890c2065 | Sofia Papagiannaki | modified_by = retrieve_displayname(meta['modified_by'])
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245 | 2715ade4 | Sofia Papagiannaki | response['X-Object-Modified-By'] = smart_str(
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246 | 88dd5c4d | Sofia Papagiannaki | modified_by, strings_only=True)
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247 | 7bef5750 | Antony Chazapis | response['X-Object-Version'] = meta['version'] |
248 | 2715ade4 | Sofia Papagiannaki | response['X-Object-Version-Timestamp'] = http_date(
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249 | 2715ade4 | Sofia Papagiannaki | int(meta['version_timestamp'])) |
250 | 7bef5750 | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Object-Meta-')]: |
251 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
252 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
253 | 2715ade4 | Sofia Papagiannaki | for k in ( |
254 | 2715ade4 | Sofia Papagiannaki | 'Content-Encoding', 'Content-Disposition', 'X-Object-Manifest', |
255 | 2715ade4 | Sofia Papagiannaki | 'X-Object-Sharing', 'X-Object-Shared-By', 'X-Object-Allowed-To', |
256 | 2715ade4 | Sofia Papagiannaki | 'X-Object-Public'):
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257 | 7bef5750 | Antony Chazapis | if k in meta: |
258 | e7b51248 | Sofia Papagiannaki | response[k] = smart_str(meta[k], strings_only=True)
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259 | 7bef5750 | Antony Chazapis | else:
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260 | c9af0703 | Antony Chazapis | for k in ('Content-Encoding', 'Content-Disposition'): |
261 | 7bef5750 | Antony Chazapis | if k in meta: |
262 | e8d003e8 | Antony Chazapis | response[k] = smart_str(meta[k], strings_only=True)
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263 | b956618e | Antony Chazapis | |
264 | 2715ade4 | Sofia Papagiannaki | |
265 | 8cb45c13 | Antony Chazapis | def update_manifest_meta(request, v_account, meta): |
266 | 8cb45c13 | Antony Chazapis | """Update metadata if the object has an X-Object-Manifest."""
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267 | 2715ade4 | Sofia Papagiannaki | |
268 | 8cb45c13 | Antony Chazapis | if 'X-Object-Manifest' in meta: |
269 | 4a1c29ea | Antony Chazapis | etag = ''
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270 | 8cb45c13 | Antony Chazapis | bytes = 0
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271 | 8cb45c13 | Antony Chazapis | try:
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272 | 2715ade4 | Sofia Papagiannaki | src_container, src_name = split_container_object_string( |
273 | 2715ade4 | Sofia Papagiannaki | '/' + meta['X-Object-Manifest']) |
274 | 2715ade4 | Sofia Papagiannaki | objects = request.backend.list_objects( |
275 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, v_account, |
276 | 2715ade4 | Sofia Papagiannaki | src_container, prefix=src_name, virtual=False)
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277 | 8cb45c13 | Antony Chazapis | for x in objects: |
278 | 61efb530 | Antony Chazapis | src_meta = request.backend.get_object_meta(request.user_uniq, |
279 | 2715ade4 | Sofia Papagiannaki | v_account, src_container, x[0], 'pithos', x[1]) |
280 | 33b4e4a6 | Antony Chazapis | etag += src_meta['checksum']
|
281 | 8cb45c13 | Antony Chazapis | bytes += src_meta['bytes'] |
282 | 8cb45c13 | Antony Chazapis | except:
|
283 | 8cb45c13 | Antony Chazapis | # Ignore errors.
|
284 | 8cb45c13 | Antony Chazapis | return
|
285 | 8cb45c13 | Antony Chazapis | meta['bytes'] = bytes |
286 | 8cb45c13 | Antony Chazapis | md5 = hashlib.md5() |
287 | 4a1c29ea | Antony Chazapis | md5.update(etag) |
288 | 33b4e4a6 | Antony Chazapis | meta['checksum'] = md5.hexdigest().lower()
|
289 | 8cb45c13 | Antony Chazapis | |
290 | 9839cc96 | root | def is_uuid(str): |
291 | 9839cc96 | root | try:
|
292 | 9839cc96 | root | uuid.UUID(str)
|
293 | 9839cc96 | root | except ValueError: |
294 | 9839cc96 | root | return False |
295 | 9839cc96 | root | else:
|
296 | 9839cc96 | root | return True |
297 | 2715ade4 | Sofia Papagiannaki | |
298 | 890c2065 | Sofia Papagiannaki | def retrieve_displayname(uuid): |
299 | 32454501 | Sofia Papagiannaki | try:
|
300 | 890c2065 | Sofia Papagiannaki | return get_displayname(
|
301 | 890c2065 | Sofia Papagiannaki | SERVICE_TOKEN, uuid, USER_CATALOG_URL, AUTHENTICATION_USERS) |
302 | 32454501 | Sofia Papagiannaki | except:
|
303 | 890c2065 | Sofia Papagiannaki | # if it fails just leave the input intact
|
304 | 32454501 | Sofia Papagiannaki | return uuid
|
305 | 32454501 | Sofia Papagiannaki | |
306 | 890c2065 | Sofia Papagiannaki | def retrieve_displaynames(uuids): |
307 | 890c2065 | Sofia Papagiannaki | return get_displaynames(
|
308 | 890c2065 | Sofia Papagiannaki | SERVICE_TOKEN, uuids, USER_CATALOG_URL, AUTHENTICATION_USERS) |
309 | 88dd5c4d | Sofia Papagiannaki | |
310 | 890c2065 | Sofia Papagiannaki | def retrieve_uuid(displayname): |
311 | 890c2065 | Sofia Papagiannaki | if is_uuid(displayname):
|
312 | 890c2065 | Sofia Papagiannaki | return displayname
|
313 | 890c2065 | Sofia Papagiannaki | |
314 | 890c2065 | Sofia Papagiannaki | uuid = get_user_uuid( |
315 | 890c2065 | Sofia Papagiannaki | SERVICE_TOKEN, displayname, USER_CATALOG_URL, AUTHENTICATION_USERS) |
316 | 890c2065 | Sofia Papagiannaki | if not uuid: |
317 | 890c2065 | Sofia Papagiannaki | raise ItemNotExists(displayname)
|
318 | 890c2065 | Sofia Papagiannaki | return uuid
|
319 | 890c2065 | Sofia Papagiannaki | |
320 | 890c2065 | Sofia Papagiannaki | def retrieve_uuids(displaynames): |
321 | 890c2065 | Sofia Papagiannaki | return get_uuids(
|
322 | 890c2065 | Sofia Papagiannaki | SERVICE_TOKEN, displaynames, USER_CATALOG_URL, AUTHENTICATION_USERS) |
323 | 890c2065 | Sofia Papagiannaki | |
324 | 890c2065 | Sofia Papagiannaki | def replace_permissions_displayname(holder): |
325 | 32454501 | Sofia Papagiannaki | try:
|
326 | 32454501 | Sofia Papagiannaki | # check first for a group permission
|
327 | 32454501 | Sofia Papagiannaki | account, group = holder.split(':')
|
328 | 32454501 | Sofia Papagiannaki | except ValueError: |
329 | 32454501 | Sofia Papagiannaki | return retrieve_uuid(holder)
|
330 | 32454501 | Sofia Papagiannaki | else:
|
331 | 32454501 | Sofia Papagiannaki | return ':'.join([retrieve_uuid(account), group]) |
332 | 32454501 | Sofia Papagiannaki | |
333 | 32454501 | Sofia Papagiannaki | def replace_permissions_uuid(holder): |
334 | 32454501 | Sofia Papagiannaki | try:
|
335 | 32454501 | Sofia Papagiannaki | # check first for a group permission
|
336 | 32454501 | Sofia Papagiannaki | account, group = holder.split(':')
|
337 | 32454501 | Sofia Papagiannaki | except ValueError: |
338 | 890c2065 | Sofia Papagiannaki | return retrieve_displayname(holder)
|
339 | 32454501 | Sofia Papagiannaki | else:
|
340 | 890c2065 | Sofia Papagiannaki | return ':'.join([retrieve_displayname(account), group]) |
341 | 32454501 | Sofia Papagiannaki | |
342 | 067cf1fc | Antony Chazapis | def update_sharing_meta(request, permissions, v_account, v_container, v_object, meta): |
343 | cca6c617 | Antony Chazapis | if permissions is None: |
344 | cca6c617 | Antony Chazapis | return
|
345 | 067cf1fc | Antony Chazapis | allowed, perm_path, perms = permissions |
346 | cca6c617 | Antony Chazapis | if len(perms) == 0: |
347 | cca6c617 | Antony Chazapis | return
|
348 | 32454501 | Sofia Papagiannaki | |
349 | 32454501 | Sofia Papagiannaki | perms['read'] = [replace_permissions_uuid(x) for x in perms.get('read', [])] |
350 | 32454501 | Sofia Papagiannaki | perms['write'] = \
|
351 | 32454501 | Sofia Papagiannaki | [replace_permissions_uuid(x) for x in perms.get('write', [])] |
352 | 32454501 | Sofia Papagiannaki | |
353 | 3436eeb0 | Antony Chazapis | ret = [] |
354 | 32454501 | Sofia Papagiannaki | |
355 | cca6c617 | Antony Chazapis | r = ','.join(perms.get('read', [])) |
356 | 3436eeb0 | Antony Chazapis | if r:
|
357 | 3436eeb0 | Antony Chazapis | ret.append('read=' + r)
|
358 | cca6c617 | Antony Chazapis | w = ','.join(perms.get('write', [])) |
359 | 3436eeb0 | Antony Chazapis | if w:
|
360 | 3436eeb0 | Antony Chazapis | ret.append('write=' + w)
|
361 | cca6c617 | Antony Chazapis | meta['X-Object-Sharing'] = '; '.join(ret) |
362 | cca6c617 | Antony Chazapis | if '/'.join((v_account, v_container, v_object)) != perm_path: |
363 | cca6c617 | Antony Chazapis | meta['X-Object-Shared-By'] = perm_path
|
364 | 61efb530 | Antony Chazapis | if request.user_uniq != v_account:
|
365 | 067cf1fc | Antony Chazapis | meta['X-Object-Allowed-To'] = allowed
|
366 | 3436eeb0 | Antony Chazapis | |
367 | 2715ade4 | Sofia Papagiannaki | |
368 | e0f916bb | Antony Chazapis | def update_public_meta(public, meta): |
369 | e0f916bb | Antony Chazapis | if not public: |
370 | e0f916bb | Antony Chazapis | return
|
371 | bb4eafc6 | Antony Chazapis | meta['X-Object-Public'] = '/public/' + encode_url(public) |
372 | e0f916bb | Antony Chazapis | |
373 | 2715ade4 | Sofia Papagiannaki | |
374 | b956618e | Antony Chazapis | def validate_modification_preconditions(request, meta): |
375 | 58a6c894 | Antony Chazapis | """Check that the modified timestamp conforms with the preconditions set."""
|
376 | 2715ade4 | Sofia Papagiannaki | |
377 | 22dab079 | Antony Chazapis | if 'modified' not in meta: |
378 | 2715ade4 | Sofia Papagiannaki | return # TODO: Always return? |
379 | 2715ade4 | Sofia Papagiannaki | |
380 | b956618e | Antony Chazapis | if_modified_since = request.META.get('HTTP_IF_MODIFIED_SINCE')
|
381 | b956618e | Antony Chazapis | if if_modified_since is not None: |
382 | b956618e | Antony Chazapis | if_modified_since = parse_http_date_safe(if_modified_since) |
383 | 22dab079 | Antony Chazapis | if if_modified_since is not None and int(meta['modified']) <= if_modified_since: |
384 | 3e5d2f38 | Antony Chazapis | raise NotModified('Resource has not been modified') |
385 | 2715ade4 | Sofia Papagiannaki | |
386 | b956618e | Antony Chazapis | if_unmodified_since = request.META.get('HTTP_IF_UNMODIFIED_SINCE')
|
387 | b956618e | Antony Chazapis | if if_unmodified_since is not None: |
388 | b956618e | Antony Chazapis | if_unmodified_since = parse_http_date_safe(if_unmodified_since) |
389 | 22dab079 | Antony Chazapis | if if_unmodified_since is not None and int(meta['modified']) > if_unmodified_since: |
390 | 3e5d2f38 | Antony Chazapis | raise PreconditionFailed('Resource has been modified') |
391 | b956618e | Antony Chazapis | |
392 | 2715ade4 | Sofia Papagiannaki | |
393 | 22dab079 | Antony Chazapis | def validate_matching_preconditions(request, meta): |
394 | 58a6c894 | Antony Chazapis | """Check that the ETag conforms with the preconditions set."""
|
395 | 2715ade4 | Sofia Papagiannaki | |
396 | 33b4e4a6 | Antony Chazapis | etag = meta['checksum']
|
397 | 33b4e4a6 | Antony Chazapis | if not etag: |
398 | 33b4e4a6 | Antony Chazapis | etag = None
|
399 | 2715ade4 | Sofia Papagiannaki | |
400 | 22dab079 | Antony Chazapis | if_match = request.META.get('HTTP_IF_MATCH')
|
401 | a8326bef | Antony Chazapis | if if_match is not None: |
402 | 4a1c29ea | Antony Chazapis | if etag is None: |
403 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource does not exist') |
404 | 4a1c29ea | Antony Chazapis | if if_match != '*' and etag not in [x.lower() for x in parse_etags(if_match)]: |
405 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource ETag does not match') |
406 | 2715ade4 | Sofia Papagiannaki | |
407 | 22dab079 | Antony Chazapis | if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
|
408 | 22dab079 | Antony Chazapis | if if_none_match is not None: |
409 | a8326bef | Antony Chazapis | # TODO: If this passes, must ignore If-Modified-Since header.
|
410 | 4a1c29ea | Antony Chazapis | if etag is not None: |
411 | 4a1c29ea | Antony Chazapis | if if_none_match == '*' or etag in [x.lower() for x in parse_etags(if_none_match)]: |
412 | a8326bef | Antony Chazapis | # TODO: Continue if an If-Modified-Since header is present.
|
413 | a8326bef | Antony Chazapis | if request.method in ('HEAD', 'GET'): |
414 | a8326bef | Antony Chazapis | raise NotModified('Resource ETag matches') |
415 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource exists or ETag matches') |
416 | 22dab079 | Antony Chazapis | |
417 | 2715ade4 | Sofia Papagiannaki | |
418 | 83dd59c5 | Antony Chazapis | def split_container_object_string(s): |
419 | 6d817842 | Antony Chazapis | if not len(s) > 0 or s[0] != '/': |
420 | 6d817842 | Antony Chazapis | raise ValueError |
421 | 6d817842 | Antony Chazapis | s = s[1:]
|
422 | 8cb45c13 | Antony Chazapis | pos = s.find('/')
|
423 | 22d7b01e | Antony Chazapis | if pos == -1 or pos == len(s) - 1: |
424 | 83dd59c5 | Antony Chazapis | raise ValueError |
425 | 8cb45c13 | Antony Chazapis | return s[:pos], s[(pos + 1):] |
426 | 83dd59c5 | Antony Chazapis | |
427 | 2715ade4 | Sofia Papagiannaki | |
428 | 4d15c94e | Sofia Papagiannaki | def copy_or_move_object(request, src_account, src_container, src_name, dest_account, dest_container, dest_name, move=False, delimiter=None): |
429 | 58a6c894 | Antony Chazapis | """Copy or move an object."""
|
430 | 2715ade4 | Sofia Papagiannaki | |
431 | 53cff70c | Antony Chazapis | if 'ignore_content_type' in request.GET and 'CONTENT_TYPE' in request.META: |
432 | 53cff70c | Antony Chazapis | del(request.META['CONTENT_TYPE']) |
433 | 66ce2ca5 | Antony Chazapis | content_type, meta, permissions, public = get_object_headers(request) |
434 | 79bb41b7 | Antony Chazapis | src_version = request.META.get('HTTP_X_SOURCE_VERSION')
|
435 | b956618e | Antony Chazapis | try:
|
436 | b956618e | Antony Chazapis | if move:
|
437 | 2715ade4 | Sofia Papagiannaki | version_id = request.backend.move_object( |
438 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, src_account, src_container, src_name, |
439 | 2715ade4 | Sofia Papagiannaki | dest_account, dest_container, dest_name, |
440 | 2715ade4 | Sofia Papagiannaki | content_type, 'pithos', meta, False, permissions, delimiter) |
441 | b956618e | Antony Chazapis | else:
|
442 | 2715ade4 | Sofia Papagiannaki | version_id = request.backend.copy_object( |
443 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, src_account, src_container, src_name, |
444 | 2715ade4 | Sofia Papagiannaki | dest_account, dest_container, dest_name, |
445 | 2715ade4 | Sofia Papagiannaki | content_type, 'pithos', meta, False, permissions, src_version, delimiter) |
446 | cca6c617 | Antony Chazapis | except NotAllowedError:
|
447 | 297513ba | Antony Chazapis | raise Forbidden('Not allowed') |
448 | 7efc9f86 | Sofia Papagiannaki | except (ItemNotExists, VersionNotExists):
|
449 | b956618e | Antony Chazapis | raise ItemNotFound('Container or object does not exist') |
450 | 3436eeb0 | Antony Chazapis | except ValueError: |
451 | 3436eeb0 | Antony Chazapis | raise BadRequest('Invalid sharing header') |
452 | 5df6c6d1 | Antony Chazapis | except QuotaError:
|
453 | 5df6c6d1 | Antony Chazapis | raise RequestEntityTooLarge('Quota exceeded') |
454 | e0f916bb | Antony Chazapis | if public is not None: |
455 | e0f916bb | Antony Chazapis | try:
|
456 | 61efb530 | Antony Chazapis | request.backend.update_object_public(request.user_uniq, dest_account, dest_container, dest_name, public) |
457 | e0f916bb | Antony Chazapis | except NotAllowedError:
|
458 | 297513ba | Antony Chazapis | raise Forbidden('Not allowed') |
459 | 7efc9f86 | Sofia Papagiannaki | except ItemNotExists:
|
460 | e0f916bb | Antony Chazapis | raise ItemNotFound('Object does not exist') |
461 | 7dd293a0 | Antony Chazapis | return version_id
|
462 | b956618e | Antony Chazapis | |
463 | 2715ade4 | Sofia Papagiannaki | |
464 | 1495b972 | Antony Chazapis | def get_int_parameter(p): |
465 | 83dd59c5 | Antony Chazapis | if p is not None: |
466 | 58a6c894 | Antony Chazapis | try:
|
467 | 83dd59c5 | Antony Chazapis | p = int(p)
|
468 | 58a6c894 | Antony Chazapis | except ValueError: |
469 | 58a6c894 | Antony Chazapis | return None |
470 | 83dd59c5 | Antony Chazapis | if p < 0: |
471 | 58a6c894 | Antony Chazapis | return None |
472 | 83dd59c5 | Antony Chazapis | return p
|
473 | 58a6c894 | Antony Chazapis | |
474 | 2715ade4 | Sofia Papagiannaki | |
475 | 22dab079 | Antony Chazapis | def get_content_length(request): |
476 | 1495b972 | Antony Chazapis | content_length = get_int_parameter(request.META.get('CONTENT_LENGTH'))
|
477 | 1495b972 | Antony Chazapis | if content_length is None: |
478 | 1495b972 | Antony Chazapis | raise LengthRequired('Missing or invalid Content-Length header') |
479 | 22dab079 | Antony Chazapis | return content_length
|
480 | 22dab079 | Antony Chazapis | |
481 | 2715ade4 | Sofia Papagiannaki | |
482 | 22dab079 | Antony Chazapis | def get_range(request, size): |
483 | 58a6c894 | Antony Chazapis | """Parse a Range header from the request.
|
484 | 2715ade4 | Sofia Papagiannaki |
|
485 | 22dab079 | Antony Chazapis | Either returns None, when the header is not existent or should be ignored,
|
486 | 22dab079 | Antony Chazapis | or a list of (offset, length) tuples - should be further checked.
|
487 | b956618e | Antony Chazapis | """
|
488 | 2715ade4 | Sofia Papagiannaki | |
489 | 22dab079 | Antony Chazapis | ranges = request.META.get('HTTP_RANGE', '').replace(' ', '') |
490 | 22dab079 | Antony Chazapis | if not ranges.startswith('bytes='): |
491 | b956618e | Antony Chazapis | return None |
492 | 2715ade4 | Sofia Papagiannaki | |
493 | 22dab079 | Antony Chazapis | ret = [] |
494 | 22dab079 | Antony Chazapis | for r in (x.strip() for x in ranges[6:].split(',')): |
495 | 22dab079 | Antony Chazapis | p = re.compile('^(?P<offset>\d*)-(?P<upto>\d*)$')
|
496 | 22dab079 | Antony Chazapis | m = p.match(r) |
497 | 22dab079 | Antony Chazapis | if not m: |
498 | 22dab079 | Antony Chazapis | return None |
499 | 22dab079 | Antony Chazapis | offset = m.group('offset')
|
500 | 22dab079 | Antony Chazapis | upto = m.group('upto')
|
501 | 22dab079 | Antony Chazapis | if offset == '' and upto == '': |
502 | b956618e | Antony Chazapis | return None |
503 | 2715ade4 | Sofia Papagiannaki | |
504 | 22dab079 | Antony Chazapis | if offset != '': |
505 | 22dab079 | Antony Chazapis | offset = int(offset)
|
506 | 22dab079 | Antony Chazapis | if upto != '': |
507 | b956618e | Antony Chazapis | upto = int(upto)
|
508 | 22dab079 | Antony Chazapis | if offset > upto:
|
509 | 22dab079 | Antony Chazapis | return None |
510 | 22dab079 | Antony Chazapis | ret.append((offset, upto - offset + 1))
|
511 | 22dab079 | Antony Chazapis | else:
|
512 | 22dab079 | Antony Chazapis | ret.append((offset, size - offset)) |
513 | b956618e | Antony Chazapis | else:
|
514 | 22dab079 | Antony Chazapis | length = int(upto)
|
515 | 22dab079 | Antony Chazapis | ret.append((size - length, length)) |
516 | 2715ade4 | Sofia Papagiannaki | |
517 | 22dab079 | Antony Chazapis | return ret
|
518 | 22dab079 | Antony Chazapis | |
519 | 2715ade4 | Sofia Papagiannaki | |
520 | 22dab079 | Antony Chazapis | def get_content_range(request): |
521 | 58a6c894 | Antony Chazapis | """Parse a Content-Range header from the request.
|
522 | 2715ade4 | Sofia Papagiannaki |
|
523 | 22dab079 | Antony Chazapis | Either returns None, when the header is not existent or should be ignored,
|
524 | 22dab079 | Antony Chazapis | or an (offset, length, total) tuple - check as length, total may be None.
|
525 | 22dab079 | Antony Chazapis | Returns (None, None, None) if the provided range is '*/*'.
|
526 | 22dab079 | Antony Chazapis | """
|
527 | 2715ade4 | Sofia Papagiannaki | |
528 | 22dab079 | Antony Chazapis | ranges = request.META.get('HTTP_CONTENT_RANGE', '') |
529 | 22dab079 | Antony Chazapis | if not ranges: |
530 | 22dab079 | Antony Chazapis | return None |
531 | 2715ade4 | Sofia Papagiannaki | |
532 | 22dab079 | Antony Chazapis | p = re.compile('^bytes (?P<offset>\d+)-(?P<upto>\d*)/(?P<total>(\d+|\*))$')
|
533 | 22dab079 | Antony Chazapis | m = p.match(ranges) |
534 | 22dab079 | Antony Chazapis | if not m: |
535 | 22dab079 | Antony Chazapis | if ranges == 'bytes */*': |
536 | 22dab079 | Antony Chazapis | return (None, None, None) |
537 | 22dab079 | Antony Chazapis | return None |
538 | 22dab079 | Antony Chazapis | offset = int(m.group('offset')) |
539 | 22dab079 | Antony Chazapis | upto = m.group('upto')
|
540 | 22dab079 | Antony Chazapis | total = m.group('total')
|
541 | 22dab079 | Antony Chazapis | if upto != '': |
542 | 22dab079 | Antony Chazapis | upto = int(upto)
|
543 | b956618e | Antony Chazapis | else:
|
544 | 22dab079 | Antony Chazapis | upto = None
|
545 | 22dab079 | Antony Chazapis | if total != '*': |
546 | 22dab079 | Antony Chazapis | total = int(total)
|
547 | 22dab079 | Antony Chazapis | else:
|
548 | 22dab079 | Antony Chazapis | total = None
|
549 | 70e526a0 | Antony Chazapis | if (upto is not None and offset > upto) or \ |
550 | 70e526a0 | Antony Chazapis | (total is not None and offset >= total) or \ |
551 | 2715ade4 | Sofia Papagiannaki | (total is not None and upto is not None and upto >= total): |
552 | 22dab079 | Antony Chazapis | return None |
553 | 2715ade4 | Sofia Papagiannaki | |
554 | 70e526a0 | Antony Chazapis | if upto is None: |
555 | 22dab079 | Antony Chazapis | length = None
|
556 | 22dab079 | Antony Chazapis | else:
|
557 | 22dab079 | Antony Chazapis | length = upto - offset + 1
|
558 | 22dab079 | Antony Chazapis | return (offset, length, total)
|
559 | b956618e | Antony Chazapis | |
560 | 2715ade4 | Sofia Papagiannaki | |
561 | 3436eeb0 | Antony Chazapis | def get_sharing(request): |
562 | 3436eeb0 | Antony Chazapis | """Parse an X-Object-Sharing header from the request.
|
563 | 2715ade4 | Sofia Papagiannaki |
|
564 | 3436eeb0 | Antony Chazapis | Raises BadRequest on error.
|
565 | 3436eeb0 | Antony Chazapis | """
|
566 | 2715ade4 | Sofia Papagiannaki | |
567 | 3436eeb0 | Antony Chazapis | permissions = request.META.get('HTTP_X_OBJECT_SHARING')
|
568 | cca6c617 | Antony Chazapis | if permissions is None: |
569 | 3436eeb0 | Antony Chazapis | return None |
570 | 2715ade4 | Sofia Papagiannaki | |
571 | 0a7f1671 | Antony Chazapis | # TODO: Document or remove '~' replacing.
|
572 | 0a7f1671 | Antony Chazapis | permissions = permissions.replace('~', '') |
573 | 2715ade4 | Sofia Papagiannaki | |
574 | 3436eeb0 | Antony Chazapis | ret = {} |
575 | cca6c617 | Antony Chazapis | permissions = permissions.replace(' ', '') |
576 | cca6c617 | Antony Chazapis | if permissions == '': |
577 | cca6c617 | Antony Chazapis | return ret
|
578 | cca6c617 | Antony Chazapis | for perm in (x for x in permissions.split(';')): |
579 | cca6c617 | Antony Chazapis | if perm.startswith('read='): |
580 | 2715ade4 | Sofia Papagiannaki | ret['read'] = list(set( |
581 | 2715ade4 | Sofia Papagiannaki | [v.replace(' ', '').lower() for v in perm[5:].split(',')])) |
582 | 02c0c3fa | Antony Chazapis | if '' in ret['read']: |
583 | 02c0c3fa | Antony Chazapis | ret['read'].remove('') |
584 | e8886082 | Antony Chazapis | if '*' in ret['read']: |
585 | e8886082 | Antony Chazapis | ret['read'] = ['*'] |
586 | 3436eeb0 | Antony Chazapis | if len(ret['read']) == 0: |
587 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
588 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: invalid length')
|
589 | 3436eeb0 | Antony Chazapis | elif perm.startswith('write='): |
590 | 2715ade4 | Sofia Papagiannaki | ret['write'] = list(set( |
591 | 2715ade4 | Sofia Papagiannaki | [v.replace(' ', '').lower() for v in perm[6:].split(',')])) |
592 | 02c0c3fa | Antony Chazapis | if '' in ret['write']: |
593 | 02c0c3fa | Antony Chazapis | ret['write'].remove('') |
594 | e8886082 | Antony Chazapis | if '*' in ret['write']: |
595 | e8886082 | Antony Chazapis | ret['write'] = ['*'] |
596 | 3436eeb0 | Antony Chazapis | if len(ret['write']) == 0: |
597 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
598 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: invalid length')
|
599 | 3436eeb0 | Antony Chazapis | else:
|
600 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
601 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: missing prefix')
|
602 | 32454501 | Sofia Papagiannaki | |
603 | 890c2065 | Sofia Papagiannaki | # replace displayname with uuid
|
604 | 32454501 | Sofia Papagiannaki | try:
|
605 | 32454501 | Sofia Papagiannaki | ret['read'] = \
|
606 | 890c2065 | Sofia Papagiannaki | [replace_permissions_displayname(x) for x in ret.get('read', [])] |
607 | 32454501 | Sofia Papagiannaki | ret['write'] = \
|
608 | 890c2065 | Sofia Papagiannaki | [replace_permissions_displayname(x) for x in ret.get('write', [])] |
609 | 874cddc7 | Sofia Papagiannaki | except ItemNotExists, e:
|
610 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
611 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: unknown account: %s' % e)
|
612 | 2715ade4 | Sofia Papagiannaki | |
613 | 21a8a6ff | Antony Chazapis | # Keep duplicates only in write list.
|
614 | 2715ade4 | Sofia Papagiannaki | dups = [x for x in ret.get( |
615 | 2715ade4 | Sofia Papagiannaki | 'read', []) if x in ret.get('write', []) and x != '*'] |
616 | 21a8a6ff | Antony Chazapis | if dups:
|
617 | 21a8a6ff | Antony Chazapis | for x in dups: |
618 | 21a8a6ff | Antony Chazapis | ret['read'].remove(x)
|
619 | 21a8a6ff | Antony Chazapis | if len(ret['read']) == 0: |
620 | 21a8a6ff | Antony Chazapis | del(ret['read']) |
621 | 2715ade4 | Sofia Papagiannaki | |
622 | 3436eeb0 | Antony Chazapis | return ret
|
623 | 3436eeb0 | Antony Chazapis | |
624 | 2715ade4 | Sofia Papagiannaki | |
625 | 3ab38c43 | Antony Chazapis | def get_public(request): |
626 | 3ab38c43 | Antony Chazapis | """Parse an X-Object-Public header from the request.
|
627 | 2715ade4 | Sofia Papagiannaki |
|
628 | 3ab38c43 | Antony Chazapis | Raises BadRequest on error.
|
629 | 3ab38c43 | Antony Chazapis | """
|
630 | 2715ade4 | Sofia Papagiannaki | |
631 | 3ab38c43 | Antony Chazapis | public = request.META.get('HTTP_X_OBJECT_PUBLIC')
|
632 | 3ab38c43 | Antony Chazapis | if public is None: |
633 | 3ab38c43 | Antony Chazapis | return None |
634 | 2715ade4 | Sofia Papagiannaki | |
635 | 3ab38c43 | Antony Chazapis | public = public.replace(' ', '').lower() |
636 | 3ab38c43 | Antony Chazapis | if public == 'true': |
637 | 3ab38c43 | Antony Chazapis | return True |
638 | 3ab38c43 | Antony Chazapis | elif public == 'false' or public == '': |
639 | 3ab38c43 | Antony Chazapis | return False |
640 | 3ab38c43 | Antony Chazapis | raise BadRequest('Bad X-Object-Public header value') |
641 | 3ab38c43 | Antony Chazapis | |
642 | 2715ade4 | Sofia Papagiannaki | |
643 | b956618e | Antony Chazapis | def raw_input_socket(request): |
644 | 58a6c894 | Antony Chazapis | """Return the socket for reading the rest of the request."""
|
645 | 2715ade4 | Sofia Papagiannaki | |
646 | b956618e | Antony Chazapis | server_software = request.META.get('SERVER_SOFTWARE')
|
647 | fc1b2a75 | Antony Chazapis | if server_software and server_software.startswith('mod_python'): |
648 | b956618e | Antony Chazapis | return request._req
|
649 | fc1b2a75 | Antony Chazapis | if 'wsgi.input' in request.environ: |
650 | fc1b2a75 | Antony Chazapis | return request.environ['wsgi.input'] |
651 | 08de868d | Antony Chazapis | raise NotImplemented('Unknown server software') |
652 | b956618e | Antony Chazapis | |
653 | 2715ade4 | Sofia Papagiannaki | MAX_UPLOAD_SIZE = 5 * (1024 * 1024 * 1024) # 5GB |
654 | 2715ade4 | Sofia Papagiannaki | |
655 | b956618e | Antony Chazapis | |
656 | c032f34d | Antony Chazapis | def socket_read_iterator(request, length=0, blocksize=4096): |
657 | 58a6c894 | Antony Chazapis | """Return a maximum of blocksize data read from the socket in each iteration.
|
658 | 2715ade4 | Sofia Papagiannaki |
|
659 | 22dab079 | Antony Chazapis | Read up to 'length'. If 'length' is negative, will attempt a chunked read.
|
660 | b956618e | Antony Chazapis | The maximum ammount of data read is controlled by MAX_UPLOAD_SIZE.
|
661 | b956618e | Antony Chazapis | """
|
662 | 2715ade4 | Sofia Papagiannaki | |
663 | c032f34d | Antony Chazapis | sock = raw_input_socket(request) |
664 | 2715ade4 | Sofia Papagiannaki | if length < 0: # Chunked transfers |
665 | c032f34d | Antony Chazapis | # Small version (server does the dechunking).
|
666 | 032dc768 | Antony Chazapis | if request.environ.get('mod_wsgi.input_chunked', None) or request.META['SERVER_SOFTWARE'].startswith('gunicorn'): |
667 | c032f34d | Antony Chazapis | while length < MAX_UPLOAD_SIZE:
|
668 | c032f34d | Antony Chazapis | data = sock.read(blocksize) |
669 | c032f34d | Antony Chazapis | if data == '': |
670 | c032f34d | Antony Chazapis | return
|
671 | c032f34d | Antony Chazapis | yield data
|
672 | c032f34d | Antony Chazapis | raise BadRequest('Maximum size is reached') |
673 | 2715ade4 | Sofia Papagiannaki | |
674 | c032f34d | Antony Chazapis | # Long version (do the dechunking).
|
675 | 22dab079 | Antony Chazapis | data = ''
|
676 | b956618e | Antony Chazapis | while length < MAX_UPLOAD_SIZE:
|
677 | 22dab079 | Antony Chazapis | # Get chunk size.
|
678 | 22dab079 | Antony Chazapis | if hasattr(sock, 'readline'): |
679 | 22dab079 | Antony Chazapis | chunk_length = sock.readline() |
680 | 22dab079 | Antony Chazapis | else:
|
681 | 22dab079 | Antony Chazapis | chunk_length = ''
|
682 | 22dab079 | Antony Chazapis | while chunk_length[-1:] != '\n': |
683 | 22dab079 | Antony Chazapis | chunk_length += sock.read(1)
|
684 | 22dab079 | Antony Chazapis | chunk_length.strip() |
685 | b956618e | Antony Chazapis | pos = chunk_length.find(';')
|
686 | b956618e | Antony Chazapis | if pos >= 0: |
687 | b956618e | Antony Chazapis | chunk_length = chunk_length[:pos] |
688 | b956618e | Antony Chazapis | try:
|
689 | b956618e | Antony Chazapis | chunk_length = int(chunk_length, 16) |
690 | b956618e | Antony Chazapis | except Exception, e: |
691 | 2715ade4 | Sofia Papagiannaki | raise BadRequest('Bad chunk size') |
692 | 2715ade4 | Sofia Papagiannaki | # TODO: Change to something more appropriate.
|
693 | 22dab079 | Antony Chazapis | # Check if done.
|
694 | b956618e | Antony Chazapis | if chunk_length == 0: |
695 | 22dab079 | Antony Chazapis | if len(data) > 0: |
696 | 22dab079 | Antony Chazapis | yield data
|
697 | b956618e | Antony Chazapis | return
|
698 | 22dab079 | Antony Chazapis | # Get the actual data.
|
699 | b956618e | Antony Chazapis | while chunk_length > 0: |
700 | 22dab079 | Antony Chazapis | chunk = sock.read(min(chunk_length, blocksize))
|
701 | 22dab079 | Antony Chazapis | chunk_length -= len(chunk)
|
702 | 623a0cf4 | Sofia Papagiannaki | if length > 0: |
703 | 623a0cf4 | Sofia Papagiannaki | length += len(chunk)
|
704 | 22dab079 | Antony Chazapis | data += chunk |
705 | 22dab079 | Antony Chazapis | if len(data) >= blocksize: |
706 | 22dab079 | Antony Chazapis | ret = data[:blocksize] |
707 | 22dab079 | Antony Chazapis | data = data[blocksize:] |
708 | 22dab079 | Antony Chazapis | yield ret
|
709 | 2715ade4 | Sofia Papagiannaki | sock.read(2) # CRLF |
710 | 32a437b1 | Sofia Papagiannaki | raise BadRequest('Maximum size is reached') |
711 | b956618e | Antony Chazapis | else:
|
712 | b956618e | Antony Chazapis | if length > MAX_UPLOAD_SIZE:
|
713 | 32a437b1 | Sofia Papagiannaki | raise BadRequest('Maximum size is reached') |
714 | b956618e | Antony Chazapis | while length > 0: |
715 | b956618e | Antony Chazapis | data = sock.read(min(length, blocksize))
|
716 | 7b25e082 | Antony Chazapis | if not data: |
717 | 7b25e082 | Antony Chazapis | raise BadRequest()
|
718 | b956618e | Antony Chazapis | length -= len(data)
|
719 | b956618e | Antony Chazapis | yield data
|
720 | b956618e | Antony Chazapis | |
721 | 2715ade4 | Sofia Papagiannaki | |
722 | 817890f2 | Antony Chazapis | class SaveToBackendHandler(FileUploadHandler): |
723 | 817890f2 | Antony Chazapis | """Handle a file from an HTML form the django way."""
|
724 | 2715ade4 | Sofia Papagiannaki | |
725 | 817890f2 | Antony Chazapis | def __init__(self, request=None): |
726 | 817890f2 | Antony Chazapis | super(SaveToBackendHandler, self).__init__(request) |
727 | 817890f2 | Antony Chazapis | self.backend = request.backend
|
728 | 2715ade4 | Sofia Papagiannaki | |
729 | 817890f2 | Antony Chazapis | def put_data(self, length): |
730 | 817890f2 | Antony Chazapis | if len(self.data) >= length: |
731 | 817890f2 | Antony Chazapis | block = self.data[:length]
|
732 | 817890f2 | Antony Chazapis | self.file.hashmap.append(self.backend.put_block(block)) |
733 | 817890f2 | Antony Chazapis | self.md5.update(block)
|
734 | 817890f2 | Antony Chazapis | self.data = self.data[length:] |
735 | 2715ade4 | Sofia Papagiannaki | |
736 | 817890f2 | Antony Chazapis | def new_file(self, field_name, file_name, content_type, content_length, charset=None): |
737 | 2715ade4 | Sofia Papagiannaki | self.md5 = hashlib.md5()
|
738 | 817890f2 | Antony Chazapis | self.data = '' |
739 | 2715ade4 | Sofia Papagiannaki | self.file = UploadedFile(
|
740 | 2715ade4 | Sofia Papagiannaki | name=file_name, content_type=content_type, charset=charset) |
741 | 817890f2 | Antony Chazapis | self.file.size = 0 |
742 | 817890f2 | Antony Chazapis | self.file.hashmap = []
|
743 | 2715ade4 | Sofia Papagiannaki | |
744 | 817890f2 | Antony Chazapis | def receive_data_chunk(self, raw_data, start): |
745 | 817890f2 | Antony Chazapis | self.data += raw_data
|
746 | 817890f2 | Antony Chazapis | self.file.size += len(raw_data) |
747 | 817890f2 | Antony Chazapis | self.put_data(self.request.backend.block_size) |
748 | 817890f2 | Antony Chazapis | return None |
749 | 2715ade4 | Sofia Papagiannaki | |
750 | 817890f2 | Antony Chazapis | def file_complete(self, file_size): |
751 | 817890f2 | Antony Chazapis | l = len(self.data) |
752 | 817890f2 | Antony Chazapis | if l > 0: |
753 | 817890f2 | Antony Chazapis | self.put_data(l)
|
754 | 817890f2 | Antony Chazapis | self.file.etag = self.md5.hexdigest().lower() |
755 | 817890f2 | Antony Chazapis | return self.file |
756 | 817890f2 | Antony Chazapis | |
757 | 2715ade4 | Sofia Papagiannaki | |
758 | 22dab079 | Antony Chazapis | class ObjectWrapper(object): |
759 | 58a6c894 | Antony Chazapis | """Return the object's data block-per-block in each iteration.
|
760 | 2715ade4 | Sofia Papagiannaki |
|
761 | 22dab079 | Antony Chazapis | Read from the object using the offset and length provided in each entry of the range list.
|
762 | 22dab079 | Antony Chazapis | """
|
763 | 2715ade4 | Sofia Papagiannaki | |
764 | 39593b2b | Giorgos Verigakis | def __init__(self, backend, ranges, sizes, hashmaps, boundary): |
765 | 39593b2b | Giorgos Verigakis | self.backend = backend
|
766 | 22dab079 | Antony Chazapis | self.ranges = ranges
|
767 | 8cb45c13 | Antony Chazapis | self.sizes = sizes
|
768 | 8cb45c13 | Antony Chazapis | self.hashmaps = hashmaps
|
769 | 22dab079 | Antony Chazapis | self.boundary = boundary
|
770 | 8cb45c13 | Antony Chazapis | self.size = sum(self.sizes) |
771 | 2715ade4 | Sofia Papagiannaki | |
772 | 8cb45c13 | Antony Chazapis | self.file_index = 0 |
773 | 8cb45c13 | Antony Chazapis | self.block_index = 0 |
774 | 8cb45c13 | Antony Chazapis | self.block_hash = -1 |
775 | 22dab079 | Antony Chazapis | self.block = '' |
776 | 2715ade4 | Sofia Papagiannaki | |
777 | 22dab079 | Antony Chazapis | self.range_index = -1 |
778 | 22dab079 | Antony Chazapis | self.offset, self.length = self.ranges[0] |
779 | 2715ade4 | Sofia Papagiannaki | |
780 | 22dab079 | Antony Chazapis | def __iter__(self): |
781 | 22dab079 | Antony Chazapis | return self |
782 | 2715ade4 | Sofia Papagiannaki | |
783 | 22dab079 | Antony Chazapis | def part_iterator(self): |
784 | 22dab079 | Antony Chazapis | if self.length > 0: |
785 | 8cb45c13 | Antony Chazapis | # Get the file for the current offset.
|
786 | 8cb45c13 | Antony Chazapis | file_size = self.sizes[self.file_index] |
787 | 8cb45c13 | Antony Chazapis | while self.offset >= file_size: |
788 | 8cb45c13 | Antony Chazapis | self.offset -= file_size
|
789 | 8cb45c13 | Antony Chazapis | self.file_index += 1 |
790 | 8cb45c13 | Antony Chazapis | file_size = self.sizes[self.file_index] |
791 | 2715ade4 | Sofia Papagiannaki | |
792 | 8cb45c13 | Antony Chazapis | # Get the block for the current position.
|
793 | 39593b2b | Giorgos Verigakis | self.block_index = int(self.offset / self.backend.block_size) |
794 | 8cb45c13 | Antony Chazapis | if self.block_hash != self.hashmaps[self.file_index][self.block_index]: |
795 | 2715ade4 | Sofia Papagiannaki | self.block_hash = self.hashmaps[ |
796 | 2715ade4 | Sofia Papagiannaki | self.file_index][self.block_index] |
797 | 22dab079 | Antony Chazapis | try:
|
798 | 39593b2b | Giorgos Verigakis | self.block = self.backend.get_block(self.block_hash) |
799 | 7efc9f86 | Sofia Papagiannaki | except ItemNotExists:
|
800 | 22dab079 | Antony Chazapis | raise ItemNotFound('Block does not exist') |
801 | 2715ade4 | Sofia Papagiannaki | |
802 | 22dab079 | Antony Chazapis | # Get the data from the block.
|
803 | 39593b2b | Giorgos Verigakis | bo = self.offset % self.backend.block_size |
804 | c9865fe1 | Antony Chazapis | bs = self.backend.block_size
|
805 | 45cf0bc8 | Antony Chazapis | if (self.block_index == len(self.hashmaps[self.file_index]) - 1 and |
806 | 2715ade4 | Sofia Papagiannaki | self.sizes[self.file_index] % self.backend.block_size): |
807 | c9865fe1 | Antony Chazapis | bs = self.sizes[self.file_index] % self.backend.block_size |
808 | c9865fe1 | Antony Chazapis | bl = min(self.length, bs - bo) |
809 | 22dab079 | Antony Chazapis | data = self.block[bo:bo + bl]
|
810 | 22dab079 | Antony Chazapis | self.offset += bl
|
811 | 22dab079 | Antony Chazapis | self.length -= bl
|
812 | 22dab079 | Antony Chazapis | return data
|
813 | 22dab079 | Antony Chazapis | else:
|
814 | 22dab079 | Antony Chazapis | raise StopIteration |
815 | 2715ade4 | Sofia Papagiannaki | |
816 | 22dab079 | Antony Chazapis | def next(self): |
817 | 22dab079 | Antony Chazapis | if len(self.ranges) == 1: |
818 | 22dab079 | Antony Chazapis | return self.part_iterator() |
819 | 22dab079 | Antony Chazapis | if self.range_index == len(self.ranges): |
820 | 22dab079 | Antony Chazapis | raise StopIteration |
821 | 22dab079 | Antony Chazapis | try:
|
822 | 22dab079 | Antony Chazapis | if self.range_index == -1: |
823 | 22dab079 | Antony Chazapis | raise StopIteration |
824 | 22dab079 | Antony Chazapis | return self.part_iterator() |
825 | 22dab079 | Antony Chazapis | except StopIteration: |
826 | 22dab079 | Antony Chazapis | self.range_index += 1 |
827 | 22dab079 | Antony Chazapis | out = [] |
828 | 22dab079 | Antony Chazapis | if self.range_index < len(self.ranges): |
829 | 22dab079 | Antony Chazapis | # Part header.
|
830 | 22dab079 | Antony Chazapis | self.offset, self.length = self.ranges[self.range_index] |
831 | 8cb45c13 | Antony Chazapis | self.file_index = 0 |
832 | 22dab079 | Antony Chazapis | if self.range_index > 0: |
833 | 22dab079 | Antony Chazapis | out.append('')
|
834 | 22dab079 | Antony Chazapis | out.append('--' + self.boundary) |
835 | 2715ade4 | Sofia Papagiannaki | out.append('Content-Range: bytes %d-%d/%d' % (
|
836 | 2715ade4 | Sofia Papagiannaki | self.offset, self.offset + self.length - 1, self.size)) |
837 | 22dab079 | Antony Chazapis | out.append('Content-Transfer-Encoding: binary')
|
838 | 22dab079 | Antony Chazapis | out.append('')
|
839 | 22dab079 | Antony Chazapis | out.append('')
|
840 | 22dab079 | Antony Chazapis | return '\r\n'.join(out) |
841 | 22dab079 | Antony Chazapis | else:
|
842 | 22dab079 | Antony Chazapis | # Footer.
|
843 | 22dab079 | Antony Chazapis | out.append('')
|
844 | 22dab079 | Antony Chazapis | out.append('--' + self.boundary + '--') |
845 | 22dab079 | Antony Chazapis | out.append('')
|
846 | 22dab079 | Antony Chazapis | return '\r\n'.join(out) |
847 | 22dab079 | Antony Chazapis | |
848 | 2715ade4 | Sofia Papagiannaki | |
849 | 8cb45c13 | Antony Chazapis | def object_data_response(request, sizes, hashmaps, meta, public=False): |
850 | 7bef5750 | Antony Chazapis | """Get the HttpResponse object for replying with the object's data."""
|
851 | 2715ade4 | Sofia Papagiannaki | |
852 | 7bef5750 | Antony Chazapis | # Range handling.
|
853 | 8cb45c13 | Antony Chazapis | size = sum(sizes)
|
854 | 7bef5750 | Antony Chazapis | ranges = get_range(request, size) |
855 | 7bef5750 | Antony Chazapis | if ranges is None: |
856 | 7bef5750 | Antony Chazapis | ranges = [(0, size)]
|
857 | 7bef5750 | Antony Chazapis | ret = 200
|
858 | 7bef5750 | Antony Chazapis | else:
|
859 | 7bef5750 | Antony Chazapis | check = [True for offset, length in ranges if |
860 | 2715ade4 | Sofia Papagiannaki | length <= 0 or length > size or |
861 | 2715ade4 | Sofia Papagiannaki | offset < 0 or offset >= size or |
862 | 2715ade4 | Sofia Papagiannaki | offset + length > size] |
863 | 7bef5750 | Antony Chazapis | if len(check) > 0: |
864 | 6d1e6dce | Sofia Papagiannaki | raise RangeNotSatisfiable('Requested range exceeds object limits') |
865 | 7bef5750 | Antony Chazapis | ret = 206
|
866 | 15d465b8 | Antony Chazapis | if_range = request.META.get('HTTP_IF_RANGE')
|
867 | 15d465b8 | Antony Chazapis | if if_range:
|
868 | 6d1e6dce | Sofia Papagiannaki | try:
|
869 | 15d465b8 | Antony Chazapis | # Modification time has passed instead.
|
870 | 6d1e6dce | Sofia Papagiannaki | last_modified = parse_http_date(if_range) |
871 | 6d1e6dce | Sofia Papagiannaki | if last_modified != meta['modified']: |
872 | 6d1e6dce | Sofia Papagiannaki | ranges = [(0, size)]
|
873 | 6d1e6dce | Sofia Papagiannaki | ret = 200
|
874 | 6d1e6dce | Sofia Papagiannaki | except ValueError: |
875 | 33b4e4a6 | Antony Chazapis | if if_range != meta['checksum']: |
876 | 6d1e6dce | Sofia Papagiannaki | ranges = [(0, size)]
|
877 | 6d1e6dce | Sofia Papagiannaki | ret = 200
|
878 | 2715ade4 | Sofia Papagiannaki | |
879 | 7bef5750 | Antony Chazapis | if ret == 206 and len(ranges) > 1: |
880 | 7bef5750 | Antony Chazapis | boundary = uuid.uuid4().hex |
881 | 7bef5750 | Antony Chazapis | else:
|
882 | 7bef5750 | Antony Chazapis | boundary = ''
|
883 | 39593b2b | Giorgos Verigakis | wrapper = ObjectWrapper(request.backend, ranges, sizes, hashmaps, boundary) |
884 | 7bef5750 | Antony Chazapis | response = HttpResponse(wrapper, status=ret) |
885 | 02c0c3fa | Antony Chazapis | put_object_headers(response, meta, public) |
886 | 7bef5750 | Antony Chazapis | if ret == 206: |
887 | 7bef5750 | Antony Chazapis | if len(ranges) == 1: |
888 | 7bef5750 | Antony Chazapis | offset, length = ranges[0]
|
889 | 2715ade4 | Sofia Papagiannaki | response[ |
890 | 2715ade4 | Sofia Papagiannaki | 'Content-Length'] = length # Update with the correct length. |
891 | 2715ade4 | Sofia Papagiannaki | response['Content-Range'] = 'bytes %d-%d/%d' % ( |
892 | 2715ade4 | Sofia Papagiannaki | offset, offset + length - 1, size)
|
893 | 7bef5750 | Antony Chazapis | else:
|
894 | 7bef5750 | Antony Chazapis | del(response['Content-Length']) |
895 | 2715ade4 | Sofia Papagiannaki | response['Content-Type'] = 'multipart/byteranges; boundary=%s' % ( |
896 | 2715ade4 | Sofia Papagiannaki | boundary,) |
897 | 7bef5750 | Antony Chazapis | return response
|
898 | 7bef5750 | Antony Chazapis | |
899 | 2715ade4 | Sofia Papagiannaki | |
900 | 39593b2b | Giorgos Verigakis | def put_object_block(request, hashmap, data, offset): |
901 | cb146cf9 | Antony Chazapis | """Put one block of data at the given offset."""
|
902 | 2715ade4 | Sofia Papagiannaki | |
903 | 39593b2b | Giorgos Verigakis | bi = int(offset / request.backend.block_size)
|
904 | 39593b2b | Giorgos Verigakis | bo = offset % request.backend.block_size |
905 | 39593b2b | Giorgos Verigakis | bl = min(len(data), request.backend.block_size - bo) |
906 | cb146cf9 | Antony Chazapis | if bi < len(hashmap): |
907 | 39593b2b | Giorgos Verigakis | hashmap[bi] = request.backend.update_block(hashmap[bi], data[:bl], bo) |
908 | cb146cf9 | Antony Chazapis | else:
|
909 | 39593b2b | Giorgos Verigakis | hashmap.append(request.backend.put_block(('\x00' * bo) + data[:bl]))
|
910 | 2715ade4 | Sofia Papagiannaki | return bl # Return ammount of data written. |
911 | 2715ade4 | Sofia Papagiannaki | |
912 | cb146cf9 | Antony Chazapis | |
913 | b3155065 | Antony Chazapis | def hashmap_md5(backend, hashmap, size): |
914 | cddcf432 | chazapis | """Produce the MD5 sum from the data in the hashmap."""
|
915 | 2715ade4 | Sofia Papagiannaki | |
916 | cddcf432 | chazapis | # TODO: Search backend for the MD5 of another object with the same hashmap and size...
|
917 | cddcf432 | chazapis | md5 = hashlib.md5() |
918 | b3155065 | Antony Chazapis | bs = backend.block_size |
919 | cddcf432 | chazapis | for bi, hash in enumerate(hashmap): |
920 | 2715ade4 | Sofia Papagiannaki | data = backend.get_block(hash) # Blocks come in padded. |
921 | cddcf432 | chazapis | if bi == len(hashmap) - 1: |
922 | c9865fe1 | Antony Chazapis | data = data[:size % bs] |
923 | c9865fe1 | Antony Chazapis | md5.update(data) |
924 | cddcf432 | chazapis | return md5.hexdigest().lower()
|
925 | 49133392 | Antony Chazapis | |
926 | 2715ade4 | Sofia Papagiannaki | |
927 | af7bb62f | Antony Chazapis | def simple_list_response(request, l): |
928 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'text': |
929 | 6b6b6c1e | Antony Chazapis | return '\n'.join(l) + '\n' |
930 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'xml': |
931 | af7bb62f | Antony Chazapis | return render_to_string('items.xml', {'items': l}) |
932 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'json': |
933 | 6b6b6c1e | Antony Chazapis | return json.dumps(l)
|
934 | 6b6b6c1e | Antony Chazapis | |
935 | 35d42381 | Vangelis Koukis | |
936 | edb7875c | Christos Stavrakakis | from pithos.backends.util import PithosBackendPool |
937 | 35d42381 | Vangelis Koukis | POOL_SIZE = 5
|
938 | 47462eda | Filippos Giannakos | if RADOS_STORAGE:
|
939 | 47462eda | Filippos Giannakos | BLOCK_PARAMS = { 'mappool': RADOS_POOL_MAPS,
|
940 | 47462eda | Filippos Giannakos | 'blockpool': RADOS_POOL_BLOCKS,
|
941 | 47462eda | Filippos Giannakos | } |
942 | 47462eda | Filippos Giannakos | else:
|
943 | 47462eda | Filippos Giannakos | BLOCK_PARAMS = { 'mappool': None, |
944 | 47462eda | Filippos Giannakos | 'blockpool': None, |
945 | 47462eda | Filippos Giannakos | } |
946 | 35d42381 | Vangelis Koukis | |
947 | 761c2b3c | root | |
948 | edb7875c | Christos Stavrakakis | _pithos_backend_pool = PithosBackendPool(size=POOL_SIZE, |
949 | edb7875c | Christos Stavrakakis | db_module=BACKEND_DB_MODULE, |
950 | edb7875c | Christos Stavrakakis | db_connection=BACKEND_DB_CONNECTION, |
951 | edb7875c | Christos Stavrakakis | block_module=BACKEND_BLOCK_MODULE, |
952 | edb7875c | Christos Stavrakakis | block_path=BACKEND_BLOCK_PATH, |
953 | edb7875c | Christos Stavrakakis | block_umask=BACKEND_BLOCK_UMASK, |
954 | edb7875c | Christos Stavrakakis | queue_module=BACKEND_QUEUE_MODULE, |
955 | b1dadd0e | Sofia Papagiannaki | queue_hosts=BACKEND_QUEUE_HOSTS, |
956 | b1dadd0e | Sofia Papagiannaki | queue_exchange=BACKEND_QUEUE_EXCHANGE, |
957 | 3173699c | Sofia Papagiannaki | quotaholder_url=QUOTAHOLDER_URL, |
958 | 3173699c | Sofia Papagiannaki | quotaholder_token=QUOTAHOLDER_TOKEN, |
959 | a9420179 | Sofia Papagiannaki | free_versioning=BACKEND_FREE_VERSIONING, |
960 | 47462eda | Filippos Giannakos | block_params=BLOCK_PARAMS) |
961 | 35d42381 | Vangelis Koukis | |
962 | 35d42381 | Vangelis Koukis | def get_backend(): |
963 | edb7875c | Christos Stavrakakis | backend = _pithos_backend_pool.pool_get() |
964 | edb7875c | Christos Stavrakakis | backend.default_policy['quota'] = BACKEND_QUOTA
|
965 | edb7875c | Christos Stavrakakis | backend.default_policy['versioning'] = BACKEND_VERSIONING
|
966 | f77b1da9 | Stratos Psomadakis | backend.messages = [] |
967 | edb7875c | Christos Stavrakakis | return backend
|
968 | 35d42381 | Vangelis Koukis | |
969 | 35d42381 | Vangelis Koukis | |
970 | 9fefc052 | Antony Chazapis | def update_request_headers(request): |
971 | 9fefc052 | Antony Chazapis | # Handle URL-encoded keys and values.
|
972 | 2715ade4 | Sofia Papagiannaki | meta = dict([(
|
973 | 2715ade4 | Sofia Papagiannaki | k, v) for k, v in request.META.iteritems() if k.startswith('HTTP_')]) |
974 | 88283e9e | Antony Chazapis | for k, v in meta.iteritems(): |
975 | 88283e9e | Antony Chazapis | try:
|
976 | 88283e9e | Antony Chazapis | k.decode('ascii')
|
977 | 88283e9e | Antony Chazapis | v.decode('ascii')
|
978 | 88283e9e | Antony Chazapis | except UnicodeDecodeError: |
979 | 88283e9e | Antony Chazapis | raise BadRequest('Bad character in headers.') |
980 | 88283e9e | Antony Chazapis | if '%' in k or '%' in v: |
981 | 88283e9e | Antony Chazapis | del(request.META[k])
|
982 | 2715ade4 | Sofia Papagiannaki | request.META[unquote(k)] = smart_unicode(unquote( |
983 | 2715ade4 | Sofia Papagiannaki | v), strings_only=True)
|
984 | 2715ade4 | Sofia Papagiannaki | |
985 | 9fefc052 | Antony Chazapis | |
986 | b956618e | Antony Chazapis | def update_response_headers(request, response): |
987 | b956618e | Antony Chazapis | if request.serialization == 'xml': |
988 | b956618e | Antony Chazapis | response['Content-Type'] = 'application/xml; charset=UTF-8' |
989 | b956618e | Antony Chazapis | elif request.serialization == 'json': |
990 | b956618e | Antony Chazapis | response['Content-Type'] = 'application/json; charset=UTF-8' |
991 | 22dab079 | Antony Chazapis | elif not response['Content-Type']: |
992 | b956618e | Antony Chazapis | response['Content-Type'] = 'text/plain; charset=UTF-8' |
993 | 2715ade4 | Sofia Papagiannaki | |
994 | 9fefc052 | Antony Chazapis | if (not response.has_header('Content-Length') and |
995 | 9fefc052 | Antony Chazapis | not (response.has_header('Content-Type') and |
996 | 9fefc052 | Antony Chazapis | response['Content-Type'].startswith('multipart/byteranges'))): |
997 | b980169d | Antony Chazapis | response['Content-Length'] = len(response.content) |
998 | 2715ade4 | Sofia Papagiannaki | |
999 | 9fefc052 | Antony Chazapis | # URL-encode unicode in headers.
|
1000 | 9fefc052 | Antony Chazapis | meta = response.items() |
1001 | 9fefc052 | Antony Chazapis | for k, v in meta: |
1002 | 88283e9e | Antony Chazapis | if (k.startswith('X-Account-') or k.startswith('X-Container-') or |
1003 | 2715ade4 | Sofia Papagiannaki | k.startswith('X-Object-') or k.startswith('Content-')): |
1004 | 9fefc052 | Antony Chazapis | del(response[k])
|
1005 | 88283e9e | Antony Chazapis | response[quote(k)] = quote(v, safe='/=,:@; ')
|
1006 | b956618e | Antony Chazapis | |
1007 | 2715ade4 | Sofia Papagiannaki | |
1008 | b956618e | Antony Chazapis | def render_fault(request, fault): |
1009 | a7dff008 | Antony Chazapis | if isinstance(fault, InternalServerError) and settings.DEBUG: |
1010 | b956618e | Antony Chazapis | fault.details = format_exc(fault) |
1011 | 2715ade4 | Sofia Papagiannaki | |
1012 | b956618e | Antony Chazapis | request.serialization = 'text'
|
1013 | 08de868d | Antony Chazapis | data = fault.message + '\n'
|
1014 | 08de868d | Antony Chazapis | if fault.details:
|
1015 | 08de868d | Antony Chazapis | data += '\n' + fault.details
|
1016 | b956618e | Antony Chazapis | response = HttpResponse(data, status=fault.code) |
1017 | b956618e | Antony Chazapis | update_response_headers(request, response) |
1018 | b956618e | Antony Chazapis | return response
|
1019 | b956618e | Antony Chazapis | |
1020 | 2715ade4 | Sofia Papagiannaki | |
1021 | b956618e | Antony Chazapis | def request_serialization(request, format_allowed=False): |
1022 | 58a6c894 | Antony Chazapis | """Return the serialization format requested.
|
1023 | 2715ade4 | Sofia Papagiannaki |
|
1024 | b956618e | Antony Chazapis | Valid formats are 'text' and 'json', 'xml' if 'format_allowed' is True.
|
1025 | b956618e | Antony Chazapis | """
|
1026 | 2715ade4 | Sofia Papagiannaki | |
1027 | b956618e | Antony Chazapis | if not format_allowed: |
1028 | b956618e | Antony Chazapis | return 'text' |
1029 | 2715ade4 | Sofia Papagiannaki | |
1030 | b956618e | Antony Chazapis | format = request.GET.get('format')
|
1031 | b956618e | Antony Chazapis | if format == 'json': |
1032 | b956618e | Antony Chazapis | return 'json' |
1033 | b956618e | Antony Chazapis | elif format == 'xml': |
1034 | b956618e | Antony Chazapis | return 'xml' |
1035 | 2715ade4 | Sofia Papagiannaki | |
1036 | f9f15f92 | Antony Chazapis | for item in request.META.get('HTTP_ACCEPT', '').split(','): |
1037 | f9f15f92 | Antony Chazapis | accept, sep, rest = item.strip().partition(';')
|
1038 | f9f15f92 | Antony Chazapis | if accept == 'application/json': |
1039 | f9f15f92 | Antony Chazapis | return 'json' |
1040 | f9f15f92 | Antony Chazapis | elif accept == 'application/xml' or accept == 'text/xml': |
1041 | f9f15f92 | Antony Chazapis | return 'xml' |
1042 | 2715ade4 | Sofia Papagiannaki | |
1043 | b956618e | Antony Chazapis | return 'text' |
1044 | b956618e | Antony Chazapis | |
1045 | c846fad1 | Sofia Papagiannaki | def get_pithos_usage(usage): |
1046 | c846fad1 | Sofia Papagiannaki | for u in usage: |
1047 | c846fad1 | Sofia Papagiannaki | if u.get('name') == 'pithos+.diskspace': |
1048 | c846fad1 | Sofia Papagiannaki | return u
|
1049 | c846fad1 | Sofia Papagiannaki | |
1050 | c846fad1 | Sofia Papagiannaki | def api_method(http_method=None, format_allowed=False, user_required=True, |
1051 | c846fad1 | Sofia Papagiannaki | request_usage=False):
|
1052 | 58a6c894 | Antony Chazapis | """Decorator function for views that implement an API method."""
|
1053 | 2715ade4 | Sofia Papagiannaki | |
1054 | b956618e | Antony Chazapis | def decorator(func): |
1055 | b956618e | Antony Chazapis | @wraps(func)
|
1056 | b956618e | Antony Chazapis | def wrapper(request, *args, **kwargs): |
1057 | b956618e | Antony Chazapis | try:
|
1058 | b956618e | Antony Chazapis | if http_method and request.method != http_method: |
1059 | b956618e | Antony Chazapis | raise BadRequest('Method not allowed.') |
1060 | 2715ade4 | Sofia Papagiannaki | |
1061 | dfdf4802 | Sofia Papagiannaki | if user_required:
|
1062 | dfdf4802 | Sofia Papagiannaki | token = None
|
1063 | dfdf4802 | Sofia Papagiannaki | if request.method in ('HEAD', 'GET') and COOKIE_NAME in request.COOKIES: |
1064 | 2715ade4 | Sofia Papagiannaki | cookie_value = unquote( |
1065 | 2715ade4 | Sofia Papagiannaki | request.COOKIES.get(COOKIE_NAME, ''))
|
1066 | bf45cb4a | Sofia Papagiannaki | account, sep, token = cookie_value.partition('|')
|
1067 | 2715ade4 | Sofia Papagiannaki | get_user(request, |
1068 | c846fad1 | Sofia Papagiannaki | AUTHENTICATION_URL, |
1069 | c846fad1 | Sofia Papagiannaki | AUTHENTICATION_USERS, |
1070 | c846fad1 | Sofia Papagiannaki | token, |
1071 | c846fad1 | Sofia Papagiannaki | user_required) |
1072 | dfdf4802 | Sofia Papagiannaki | if getattr(request, 'user', None) is None: |
1073 | dfdf4802 | Sofia Papagiannaki | raise Unauthorized('Access denied') |
1074 | b3102a96 | Sofia Papagiannaki | assert getattr(request, 'user_uniq', None) != None |
1075 | c846fad1 | Sofia Papagiannaki | request.user_usage = get_pithos_usage( |
1076 | 2042a902 | Sofia Papagiannaki | request.user.get('usage', []))
|
1077 | 2c22e4ac | Antony Chazapis | |
1078 | b956618e | Antony Chazapis | # The args variable may contain up to (account, container, object).
|
1079 | b956618e | Antony Chazapis | if len(args) > 1 and len(args[1]) > 256: |
1080 | b956618e | Antony Chazapis | raise BadRequest('Container name too large.') |
1081 | b956618e | Antony Chazapis | if len(args) > 2 and len(args[2]) > 1024: |
1082 | b956618e | Antony Chazapis | raise BadRequest('Object name too large.') |
1083 | 2715ade4 | Sofia Papagiannaki | |
1084 | 9fefc052 | Antony Chazapis | # Format and check headers.
|
1085 | 9fefc052 | Antony Chazapis | update_request_headers(request) |
1086 | 2715ade4 | Sofia Papagiannaki | |
1087 | b956618e | Antony Chazapis | # Fill in custom request variables.
|
1088 | 2715ade4 | Sofia Papagiannaki | request.serialization = request_serialization( |
1089 | 2715ade4 | Sofia Papagiannaki | request, format_allowed) |
1090 | 228de81b | Antony Chazapis | request.backend = get_backend() |
1091 | 2715ade4 | Sofia Papagiannaki | |
1092 | b956618e | Antony Chazapis | response = func(request, *args, **kwargs) |
1093 | b956618e | Antony Chazapis | update_response_headers(request, response) |
1094 | b956618e | Antony Chazapis | return response
|
1095 | b956618e | Antony Chazapis | except Fault, fault:
|
1096 | 6e9c8fc1 | Christos Stavrakakis | if fault.code >= 500: |
1097 | 6e9c8fc1 | Christos Stavrakakis | logger.exception("API Fault")
|
1098 | b956618e | Antony Chazapis | return render_fault(request, fault)
|
1099 | b956618e | Antony Chazapis | except BaseException, e: |
1100 | b956618e | Antony Chazapis | logger.exception('Unexpected error: %s' % e)
|
1101 | dfdf4802 | Sofia Papagiannaki | fault = InternalServerError('Unexpected error: %s' % e)
|
1102 | b956618e | Antony Chazapis | return render_fault(request, fault)
|
1103 | 7b25e082 | Antony Chazapis | finally:
|
1104 | 297513ba | Antony Chazapis | if getattr(request, 'backend', None) is not None: |
1105 | d14fe290 | Antony Chazapis | request.backend.close() |
1106 | b956618e | Antony Chazapis | return wrapper
|
1107 | b956618e | Antony Chazapis | return decorator |