root / snf-pithos-app / pithos / api / util.py @ f4fbb0fa
History | View | Annotate | Download (36.6 kB)
1 | 2e662088 | Antony Chazapis | # Copyright 2011-2012 GRNET S.A. All rights reserved.
|
---|---|---|---|
2 | 2715ade4 | Sofia Papagiannaki | #
|
3 | 5635f9ef | Antony Chazapis | # Redistribution and use in source and binary forms, with or
|
4 | 5635f9ef | Antony Chazapis | # without modification, are permitted provided that the following
|
5 | 5635f9ef | Antony Chazapis | # conditions are met:
|
6 | 2715ade4 | Sofia Papagiannaki | #
|
7 | 5635f9ef | Antony Chazapis | # 1. Redistributions of source code must retain the above
|
8 | 5635f9ef | Antony Chazapis | # copyright notice, this list of conditions and the following
|
9 | 5635f9ef | Antony Chazapis | # disclaimer.
|
10 | 2715ade4 | Sofia Papagiannaki | #
|
11 | 5635f9ef | Antony Chazapis | # 2. Redistributions in binary form must reproduce the above
|
12 | 5635f9ef | Antony Chazapis | # copyright notice, this list of conditions and the following
|
13 | 5635f9ef | Antony Chazapis | # disclaimer in the documentation and/or other materials
|
14 | 5635f9ef | Antony Chazapis | # provided with the distribution.
|
15 | 2715ade4 | Sofia Papagiannaki | #
|
16 | 5635f9ef | Antony Chazapis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
17 | 5635f9ef | Antony Chazapis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
18 | 5635f9ef | Antony Chazapis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
19 | 5635f9ef | Antony Chazapis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
20 | 5635f9ef | Antony Chazapis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
21 | 5635f9ef | Antony Chazapis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
22 | 5635f9ef | Antony Chazapis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
23 | 5635f9ef | Antony Chazapis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
24 | 5635f9ef | Antony Chazapis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
25 | 5635f9ef | Antony Chazapis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
26 | 5635f9ef | Antony Chazapis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
27 | 5635f9ef | Antony Chazapis | # POSSIBILITY OF SUCH DAMAGE.
|
28 | 2715ade4 | Sofia Papagiannaki | #
|
29 | 5635f9ef | Antony Chazapis | # The views and conclusions contained in the software and
|
30 | 5635f9ef | Antony Chazapis | # documentation are those of the authors and should not be
|
31 | 5635f9ef | Antony Chazapis | # interpreted as representing official policies, either expressed
|
32 | 5635f9ef | Antony Chazapis | # or implied, of GRNET S.A.
|
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)
|
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 | 2715ade4 | Sofia Papagiannaki | BACKEND_BLOCK_MODULE, BACKEND_BLOCK_PATH, |
61 | 2715ade4 | Sofia Papagiannaki | BACKEND_BLOCK_UMASK, |
62 | f4fbb0fa | Sofia Papagiannaki | BACKEND_QUEUE_MODULE, BACKEND_QUEUE_HOSTS, |
63 | f4fbb0fa | Sofia Papagiannaki | BACKEND_QUEUE_EXCHANGE, |
64 | 2715ade4 | Sofia Papagiannaki | BACKEND_QUOTA, BACKEND_VERSIONING, |
65 | 2715ade4 | Sofia Papagiannaki | AUTHENTICATION_URL, AUTHENTICATION_USERS, |
66 | 2715ade4 | Sofia Papagiannaki | SERVICE_TOKEN, COOKIE_NAME) |
67 | dfdf4802 | Sofia Papagiannaki | |
68 | 39593b2b | Giorgos Verigakis | from pithos.backends import connect_backend |
69 | 7efc9f86 | Sofia Papagiannaki | from pithos.backends.base import NotAllowedError, QuotaError, ItemNotExists, VersionNotExists |
70 | b956618e | Antony Chazapis | |
71 | b956618e | Antony Chazapis | import logging |
72 | 22dab079 | Antony Chazapis | import re |
73 | cbfb6636 | Sofia Papagiannaki | import hashlib |
74 | 7bef5750 | Antony Chazapis | import uuid |
75 | c48acbfd | Sofia Papagiannaki | import decimal |
76 | 8c793655 | Antony Chazapis | |
77 | b956618e | Antony Chazapis | |
78 | b956618e | Antony Chazapis | logger = logging.getLogger(__name__) |
79 | b956618e | Antony Chazapis | |
80 | b956618e | Antony Chazapis | |
81 | e11087c2 | Antony Chazapis | class UTC(tzinfo): |
82 | 2715ade4 | Sofia Papagiannaki | def utcoffset(self, dt): |
83 | 2715ade4 | Sofia Papagiannaki | return timedelta(0) |
84 | e11087c2 | Antony Chazapis | |
85 | 2715ade4 | Sofia Papagiannaki | def tzname(self, dt): |
86 | 2715ade4 | Sofia Papagiannaki | return 'UTC' |
87 | 2715ade4 | Sofia Papagiannaki | |
88 | 2715ade4 | Sofia Papagiannaki | def dst(self, dt): |
89 | 2715ade4 | Sofia Papagiannaki | return timedelta(0) |
90 | e11087c2 | Antony Chazapis | |
91 | e11087c2 | Antony Chazapis | |
92 | c48acbfd | Sofia Papagiannaki | def json_encode_decimal(obj): |
93 | c48acbfd | Sofia Papagiannaki | if isinstance(obj, decimal.Decimal): |
94 | c48acbfd | Sofia Papagiannaki | return str(obj) |
95 | c48acbfd | Sofia Papagiannaki | raise TypeError(repr(obj) + " is not JSON serializable") |
96 | c48acbfd | Sofia Papagiannaki | |
97 | 2715ade4 | Sofia Papagiannaki | |
98 | e11087c2 | Antony Chazapis | def isoformat(d): |
99 | 2715ade4 | Sofia Papagiannaki | """Return an ISO8601 date string that includes a timezone."""
|
100 | 2715ade4 | Sofia Papagiannaki | |
101 | 2715ade4 | Sofia Papagiannaki | return d.replace(tzinfo=UTC()).isoformat()
|
102 | e11087c2 | Antony Chazapis | |
103 | e11087c2 | Antony Chazapis | |
104 | 804e8fe7 | Antony Chazapis | def rename_meta_key(d, old, new): |
105 | 804e8fe7 | Antony Chazapis | if old not in d: |
106 | 804e8fe7 | Antony Chazapis | return
|
107 | 804e8fe7 | Antony Chazapis | d[new] = d[old] |
108 | 804e8fe7 | Antony Chazapis | del(d[old])
|
109 | 804e8fe7 | Antony Chazapis | |
110 | 2715ade4 | Sofia Papagiannaki | |
111 | 02c0c3fa | Antony Chazapis | def printable_header_dict(d): |
112 | b956618e | Antony Chazapis | """Format a meta dictionary for printing out json/xml.
|
113 | 2715ade4 | Sofia Papagiannaki |
|
114 | 804e8fe7 | Antony Chazapis | Convert all keys to lower case and replace dashes with underscores.
|
115 | 804e8fe7 | Antony Chazapis | Format 'last_modified' timestamp.
|
116 | b956618e | Antony Chazapis | """
|
117 | 2715ade4 | Sofia Papagiannaki | |
118 | 371d907a | Antony Chazapis | if 'last_modified' in d and d['last_modified']: |
119 | 2715ade4 | Sofia Papagiannaki | d['last_modified'] = isoformat(
|
120 | 2715ade4 | Sofia Papagiannaki | datetime.fromtimestamp(d['last_modified']))
|
121 | b956618e | Antony Chazapis | return dict([(k.lower().replace('-', '_'), v) for k, v in d.iteritems()]) |
122 | b956618e | Antony Chazapis | |
123 | 2715ade4 | Sofia Papagiannaki | |
124 | 02c0c3fa | Antony Chazapis | def format_header_key(k): |
125 | 58a6c894 | Antony Chazapis | """Convert underscores to dashes and capitalize intra-dash strings."""
|
126 | b956618e | Antony Chazapis | return '-'.join([x.capitalize() for x in k.replace('_', '-').split('-')]) |
127 | b956618e | Antony Chazapis | |
128 | 2715ade4 | Sofia Papagiannaki | |
129 | 02c0c3fa | Antony Chazapis | def get_header_prefix(request, prefix): |
130 | 02c0c3fa | Antony Chazapis | """Get all prefix-* request headers in a dict. Reformat keys with format_header_key()."""
|
131 | 2715ade4 | Sofia Papagiannaki | |
132 | b956618e | Antony Chazapis | prefix = 'HTTP_' + prefix.upper().replace('-', '_') |
133 | 3ab38c43 | Antony Chazapis | # TODO: Document or remove '~' replacing.
|
134 | 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)]) |
135 | 02c0c3fa | Antony Chazapis | |
136 | 2715ade4 | Sofia Papagiannaki | |
137 | 62bf8157 | Antony Chazapis | def check_meta_headers(meta): |
138 | 62bf8157 | Antony Chazapis | if len(meta) > 90: |
139 | 62bf8157 | Antony Chazapis | raise BadRequest('Too many headers.') |
140 | 62bf8157 | Antony Chazapis | for k, v in meta.iteritems(): |
141 | 62bf8157 | Antony Chazapis | if len(k) > 128: |
142 | 62bf8157 | Antony Chazapis | raise BadRequest('Header name too large.') |
143 | 62bf8157 | Antony Chazapis | if len(v) > 256: |
144 | 62bf8157 | Antony Chazapis | raise BadRequest('Header value too large.') |
145 | 62bf8157 | Antony Chazapis | |
146 | 2715ade4 | Sofia Papagiannaki | |
147 | 02c0c3fa | Antony Chazapis | def get_account_headers(request): |
148 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Account-Meta-')
|
149 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
150 | 02c0c3fa | Antony Chazapis | groups = {} |
151 | 02c0c3fa | Antony Chazapis | for k, v in get_header_prefix(request, 'X-Account-Group-').iteritems(): |
152 | 02c0c3fa | Antony Chazapis | n = k[16:].lower()
|
153 | 02c0c3fa | Antony Chazapis | if '-' in n or '_' in n: |
154 | 02c0c3fa | Antony Chazapis | raise BadRequest('Bad characters in group name') |
155 | 02c0c3fa | Antony Chazapis | groups[n] = v.replace(' ', '').split(',') |
156 | 40d6b76d | Antony Chazapis | while '' in groups[n]: |
157 | 02c0c3fa | Antony Chazapis | groups[n].remove('')
|
158 | 02c0c3fa | Antony Chazapis | return meta, groups
|
159 | 02c0c3fa | Antony Chazapis | |
160 | 2715ade4 | Sofia Papagiannaki | |
161 | 647a5f48 | Antony Chazapis | def put_account_headers(response, meta, groups, policy): |
162 | f6c97079 | Antony Chazapis | if 'count' in meta: |
163 | f6c97079 | Antony Chazapis | response['X-Account-Container-Count'] = meta['count'] |
164 | f6c97079 | Antony Chazapis | if 'bytes' in meta: |
165 | f6c97079 | Antony Chazapis | response['X-Account-Bytes-Used'] = meta['bytes'] |
166 | d065f612 | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
167 | b956618e | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Account-Meta-')]: |
168 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
169 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
170 | 83dd59c5 | Antony Chazapis | if 'until_timestamp' in meta: |
171 | 2715ade4 | Sofia Papagiannaki | response['X-Account-Until-Timestamp'] = http_date(
|
172 | 2715ade4 | Sofia Papagiannaki | int(meta['until_timestamp'])) |
173 | 02c0c3fa | Antony Chazapis | for k, v in groups.iteritems(): |
174 | e7b51248 | Sofia Papagiannaki | k = smart_str(k, strings_only=True)
|
175 | e7b51248 | Sofia Papagiannaki | k = format_header_key('X-Account-Group-' + k)
|
176 | e7b51248 | Sofia Papagiannaki | v = smart_str(','.join(v), strings_only=True) |
177 | e7b51248 | Sofia Papagiannaki | response[k] = v |
178 | 647a5f48 | Antony Chazapis | for k, v in policy.iteritems(): |
179 | 647a5f48 | Antony Chazapis | response[smart_str(format_header_key('X-Account-Policy-' + k), strings_only=True)] = smart_str(v, strings_only=True) |
180 | 647a5f48 | Antony Chazapis | |
181 | 2715ade4 | Sofia Papagiannaki | |
182 | 02c0c3fa | Antony Chazapis | def get_container_headers(request): |
183 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Container-Meta-')
|
184 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
185 | 3ab38c43 | Antony Chazapis | policy = dict([(k[19:].lower(), v.replace(' ', '')) for k, v in get_header_prefix(request, 'X-Container-Policy-').iteritems()]) |
186 | 3ab38c43 | Antony Chazapis | return meta, policy
|
187 | b956618e | Antony Chazapis | |
188 | 2715ade4 | Sofia Papagiannaki | |
189 | 39593b2b | Giorgos Verigakis | def put_container_headers(request, response, meta, policy): |
190 | f6c97079 | Antony Chazapis | if 'count' in meta: |
191 | f6c97079 | Antony Chazapis | response['X-Container-Object-Count'] = meta['count'] |
192 | f6c97079 | Antony Chazapis | if 'bytes' in meta: |
193 | f6c97079 | Antony Chazapis | response['X-Container-Bytes-Used'] = meta['bytes'] |
194 | 58a6c894 | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
195 | b956618e | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Container-Meta-')]: |
196 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
197 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
198 | 2715ade4 | Sofia Papagiannaki | l = [smart_str(x, strings_only=True) for x in meta['object_meta'] |
199 | 2715ade4 | Sofia Papagiannaki | if x.startswith('X-Object-Meta-')] |
200 | e7b51248 | Sofia Papagiannaki | response['X-Container-Object-Meta'] = ','.join([x[14:] for x in l]) |
201 | 39593b2b | Giorgos Verigakis | response['X-Container-Block-Size'] = request.backend.block_size
|
202 | 39593b2b | Giorgos Verigakis | response['X-Container-Block-Hash'] = request.backend.hash_algorithm
|
203 | 83dd59c5 | Antony Chazapis | if 'until_timestamp' in meta: |
204 | 2715ade4 | Sofia Papagiannaki | response['X-Container-Until-Timestamp'] = http_date(
|
205 | 2715ade4 | Sofia Papagiannaki | int(meta['until_timestamp'])) |
206 | 3ab38c43 | Antony Chazapis | for k, v in policy.iteritems(): |
207 | e7b51248 | Sofia Papagiannaki | response[smart_str(format_header_key('X-Container-Policy-' + k), strings_only=True)] = smart_str(v, strings_only=True) |
208 | b956618e | Antony Chazapis | |
209 | 2715ade4 | Sofia Papagiannaki | |
210 | 02c0c3fa | Antony Chazapis | def get_object_headers(request): |
211 | 66ce2ca5 | Antony Chazapis | content_type = request.META.get('CONTENT_TYPE', None) |
212 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Object-Meta-')
|
213 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
214 | b956618e | Antony Chazapis | if request.META.get('HTTP_CONTENT_ENCODING'): |
215 | b956618e | Antony Chazapis | meta['Content-Encoding'] = request.META['HTTP_CONTENT_ENCODING'] |
216 | 22dab079 | Antony Chazapis | if request.META.get('HTTP_CONTENT_DISPOSITION'): |
217 | 22dab079 | Antony Chazapis | meta['Content-Disposition'] = request.META['HTTP_CONTENT_DISPOSITION'] |
218 | b956618e | Antony Chazapis | if request.META.get('HTTP_X_OBJECT_MANIFEST'): |
219 | b956618e | Antony Chazapis | meta['X-Object-Manifest'] = request.META['HTTP_X_OBJECT_MANIFEST'] |
220 | 66ce2ca5 | Antony Chazapis | return content_type, meta, get_sharing(request), get_public(request)
|
221 | b956618e | Antony Chazapis | |
222 | 2715ade4 | Sofia Papagiannaki | |
223 | 3ab38c43 | Antony Chazapis | def put_object_headers(response, meta, restricted=False): |
224 | 33b4e4a6 | Antony Chazapis | response['ETag'] = meta['checksum'] |
225 | b956618e | Antony Chazapis | response['Content-Length'] = meta['bytes'] |
226 | 66ce2ca5 | Antony Chazapis | response['Content-Type'] = meta.get('type', 'application/octet-stream') |
227 | b956618e | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
228 | 3ab38c43 | Antony Chazapis | if not restricted: |
229 | 4a1c29ea | Antony Chazapis | response['X-Object-Hash'] = meta['hash'] |
230 | 37bee317 | Antony Chazapis | response['X-Object-UUID'] = meta['uuid'] |
231 | 2715ade4 | Sofia Papagiannaki | response['X-Object-Modified-By'] = smart_str(
|
232 | 2715ade4 | Sofia Papagiannaki | meta['modified_by'], strings_only=True) |
233 | 7bef5750 | Antony Chazapis | response['X-Object-Version'] = meta['version'] |
234 | 2715ade4 | Sofia Papagiannaki | response['X-Object-Version-Timestamp'] = http_date(
|
235 | 2715ade4 | Sofia Papagiannaki | int(meta['version_timestamp'])) |
236 | 7bef5750 | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Object-Meta-')]: |
237 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
238 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
239 | 2715ade4 | Sofia Papagiannaki | for k in ( |
240 | 2715ade4 | Sofia Papagiannaki | 'Content-Encoding', 'Content-Disposition', 'X-Object-Manifest', |
241 | 2715ade4 | Sofia Papagiannaki | 'X-Object-Sharing', 'X-Object-Shared-By', 'X-Object-Allowed-To', |
242 | 2715ade4 | Sofia Papagiannaki | 'X-Object-Public'):
|
243 | 7bef5750 | Antony Chazapis | if k in meta: |
244 | e7b51248 | Sofia Papagiannaki | response[k] = smart_str(meta[k], strings_only=True)
|
245 | 7bef5750 | Antony Chazapis | else:
|
246 | c9af0703 | Antony Chazapis | for k in ('Content-Encoding', 'Content-Disposition'): |
247 | 7bef5750 | Antony Chazapis | if k in meta: |
248 | e8d003e8 | Antony Chazapis | response[k] = smart_str(meta[k], strings_only=True)
|
249 | b956618e | Antony Chazapis | |
250 | 2715ade4 | Sofia Papagiannaki | |
251 | 8cb45c13 | Antony Chazapis | def update_manifest_meta(request, v_account, meta): |
252 | 8cb45c13 | Antony Chazapis | """Update metadata if the object has an X-Object-Manifest."""
|
253 | 2715ade4 | Sofia Papagiannaki | |
254 | 8cb45c13 | Antony Chazapis | if 'X-Object-Manifest' in meta: |
255 | 4a1c29ea | Antony Chazapis | etag = ''
|
256 | 8cb45c13 | Antony Chazapis | bytes = 0
|
257 | 8cb45c13 | Antony Chazapis | try:
|
258 | 2715ade4 | Sofia Papagiannaki | src_container, src_name = split_container_object_string( |
259 | 2715ade4 | Sofia Papagiannaki | '/' + meta['X-Object-Manifest']) |
260 | 2715ade4 | Sofia Papagiannaki | objects = request.backend.list_objects( |
261 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, v_account, |
262 | 2715ade4 | Sofia Papagiannaki | src_container, prefix=src_name, virtual=False)
|
263 | 8cb45c13 | Antony Chazapis | for x in objects: |
264 | 61efb530 | Antony Chazapis | src_meta = request.backend.get_object_meta(request.user_uniq, |
265 | 2715ade4 | Sofia Papagiannaki | v_account, src_container, x[0], 'pithos', x[1]) |
266 | 33b4e4a6 | Antony Chazapis | etag += src_meta['checksum']
|
267 | 8cb45c13 | Antony Chazapis | bytes += src_meta['bytes'] |
268 | 8cb45c13 | Antony Chazapis | except:
|
269 | 8cb45c13 | Antony Chazapis | # Ignore errors.
|
270 | 8cb45c13 | Antony Chazapis | return
|
271 | 8cb45c13 | Antony Chazapis | meta['bytes'] = bytes |
272 | 8cb45c13 | Antony Chazapis | md5 = hashlib.md5() |
273 | 4a1c29ea | Antony Chazapis | md5.update(etag) |
274 | 33b4e4a6 | Antony Chazapis | meta['checksum'] = md5.hexdigest().lower()
|
275 | 8cb45c13 | Antony Chazapis | |
276 | 2715ade4 | Sofia Papagiannaki | |
277 | 067cf1fc | Antony Chazapis | def update_sharing_meta(request, permissions, v_account, v_container, v_object, meta): |
278 | cca6c617 | Antony Chazapis | if permissions is None: |
279 | cca6c617 | Antony Chazapis | return
|
280 | 067cf1fc | Antony Chazapis | allowed, perm_path, perms = permissions |
281 | cca6c617 | Antony Chazapis | if len(perms) == 0: |
282 | cca6c617 | Antony Chazapis | return
|
283 | 3436eeb0 | Antony Chazapis | ret = [] |
284 | cca6c617 | Antony Chazapis | r = ','.join(perms.get('read', [])) |
285 | 3436eeb0 | Antony Chazapis | if r:
|
286 | 3436eeb0 | Antony Chazapis | ret.append('read=' + r)
|
287 | cca6c617 | Antony Chazapis | w = ','.join(perms.get('write', [])) |
288 | 3436eeb0 | Antony Chazapis | if w:
|
289 | 3436eeb0 | Antony Chazapis | ret.append('write=' + w)
|
290 | cca6c617 | Antony Chazapis | meta['X-Object-Sharing'] = '; '.join(ret) |
291 | cca6c617 | Antony Chazapis | if '/'.join((v_account, v_container, v_object)) != perm_path: |
292 | cca6c617 | Antony Chazapis | meta['X-Object-Shared-By'] = perm_path
|
293 | 61efb530 | Antony Chazapis | if request.user_uniq != v_account:
|
294 | 067cf1fc | Antony Chazapis | meta['X-Object-Allowed-To'] = allowed
|
295 | 3436eeb0 | Antony Chazapis | |
296 | 2715ade4 | Sofia Papagiannaki | |
297 | e0f916bb | Antony Chazapis | def update_public_meta(public, meta): |
298 | e0f916bb | Antony Chazapis | if not public: |
299 | e0f916bb | Antony Chazapis | return
|
300 | bb4eafc6 | Antony Chazapis | meta['X-Object-Public'] = '/public/' + encode_url(public) |
301 | e0f916bb | Antony Chazapis | |
302 | 2715ade4 | Sofia Papagiannaki | |
303 | b956618e | Antony Chazapis | def validate_modification_preconditions(request, meta): |
304 | 58a6c894 | Antony Chazapis | """Check that the modified timestamp conforms with the preconditions set."""
|
305 | 2715ade4 | Sofia Papagiannaki | |
306 | 22dab079 | Antony Chazapis | if 'modified' not in meta: |
307 | 2715ade4 | Sofia Papagiannaki | return # TODO: Always return? |
308 | 2715ade4 | Sofia Papagiannaki | |
309 | b956618e | Antony Chazapis | if_modified_since = request.META.get('HTTP_IF_MODIFIED_SINCE')
|
310 | b956618e | Antony Chazapis | if if_modified_since is not None: |
311 | b956618e | Antony Chazapis | if_modified_since = parse_http_date_safe(if_modified_since) |
312 | 22dab079 | Antony Chazapis | if if_modified_since is not None and int(meta['modified']) <= if_modified_since: |
313 | 3e5d2f38 | Antony Chazapis | raise NotModified('Resource has not been modified') |
314 | 2715ade4 | Sofia Papagiannaki | |
315 | b956618e | Antony Chazapis | if_unmodified_since = request.META.get('HTTP_IF_UNMODIFIED_SINCE')
|
316 | b956618e | Antony Chazapis | if if_unmodified_since is not None: |
317 | b956618e | Antony Chazapis | if_unmodified_since = parse_http_date_safe(if_unmodified_since) |
318 | 22dab079 | Antony Chazapis | if if_unmodified_since is not None and int(meta['modified']) > if_unmodified_since: |
319 | 3e5d2f38 | Antony Chazapis | raise PreconditionFailed('Resource has been modified') |
320 | b956618e | Antony Chazapis | |
321 | 2715ade4 | Sofia Papagiannaki | |
322 | 22dab079 | Antony Chazapis | def validate_matching_preconditions(request, meta): |
323 | 58a6c894 | Antony Chazapis | """Check that the ETag conforms with the preconditions set."""
|
324 | 2715ade4 | Sofia Papagiannaki | |
325 | 33b4e4a6 | Antony Chazapis | etag = meta['checksum']
|
326 | 33b4e4a6 | Antony Chazapis | if not etag: |
327 | 33b4e4a6 | Antony Chazapis | etag = None
|
328 | 2715ade4 | Sofia Papagiannaki | |
329 | 22dab079 | Antony Chazapis | if_match = request.META.get('HTTP_IF_MATCH')
|
330 | a8326bef | Antony Chazapis | if if_match is not None: |
331 | 4a1c29ea | Antony Chazapis | if etag is None: |
332 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource does not exist') |
333 | 4a1c29ea | Antony Chazapis | if if_match != '*' and etag not in [x.lower() for x in parse_etags(if_match)]: |
334 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource ETag does not match') |
335 | 2715ade4 | Sofia Papagiannaki | |
336 | 22dab079 | Antony Chazapis | if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
|
337 | 22dab079 | Antony Chazapis | if if_none_match is not None: |
338 | a8326bef | Antony Chazapis | # TODO: If this passes, must ignore If-Modified-Since header.
|
339 | 4a1c29ea | Antony Chazapis | if etag is not None: |
340 | 4a1c29ea | Antony Chazapis | if if_none_match == '*' or etag in [x.lower() for x in parse_etags(if_none_match)]: |
341 | a8326bef | Antony Chazapis | # TODO: Continue if an If-Modified-Since header is present.
|
342 | a8326bef | Antony Chazapis | if request.method in ('HEAD', 'GET'): |
343 | a8326bef | Antony Chazapis | raise NotModified('Resource ETag matches') |
344 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource exists or ETag matches') |
345 | 22dab079 | Antony Chazapis | |
346 | 2715ade4 | Sofia Papagiannaki | |
347 | 83dd59c5 | Antony Chazapis | def split_container_object_string(s): |
348 | 6d817842 | Antony Chazapis | if not len(s) > 0 or s[0] != '/': |
349 | 6d817842 | Antony Chazapis | raise ValueError |
350 | 6d817842 | Antony Chazapis | s = s[1:]
|
351 | 8cb45c13 | Antony Chazapis | pos = s.find('/')
|
352 | 22d7b01e | Antony Chazapis | if pos == -1 or pos == len(s) - 1: |
353 | 83dd59c5 | Antony Chazapis | raise ValueError |
354 | 8cb45c13 | Antony Chazapis | return s[:pos], s[(pos + 1):] |
355 | 83dd59c5 | Antony Chazapis | |
356 | 2715ade4 | Sofia Papagiannaki | |
357 | 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): |
358 | 58a6c894 | Antony Chazapis | """Copy or move an object."""
|
359 | 2715ade4 | Sofia Papagiannaki | |
360 | 53cff70c | Antony Chazapis | if 'ignore_content_type' in request.GET and 'CONTENT_TYPE' in request.META: |
361 | 53cff70c | Antony Chazapis | del(request.META['CONTENT_TYPE']) |
362 | 66ce2ca5 | Antony Chazapis | content_type, meta, permissions, public = get_object_headers(request) |
363 | 79bb41b7 | Antony Chazapis | src_version = request.META.get('HTTP_X_SOURCE_VERSION')
|
364 | b956618e | Antony Chazapis | try:
|
365 | b956618e | Antony Chazapis | if move:
|
366 | 2715ade4 | Sofia Papagiannaki | version_id = request.backend.move_object( |
367 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, src_account, src_container, src_name, |
368 | 2715ade4 | Sofia Papagiannaki | dest_account, dest_container, dest_name, |
369 | 2715ade4 | Sofia Papagiannaki | content_type, 'pithos', meta, False, permissions, delimiter) |
370 | b956618e | Antony Chazapis | else:
|
371 | 2715ade4 | Sofia Papagiannaki | version_id = request.backend.copy_object( |
372 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, src_account, src_container, src_name, |
373 | 2715ade4 | Sofia Papagiannaki | dest_account, dest_container, dest_name, |
374 | 2715ade4 | Sofia Papagiannaki | content_type, 'pithos', meta, False, permissions, src_version, delimiter) |
375 | cca6c617 | Antony Chazapis | except NotAllowedError:
|
376 | 297513ba | Antony Chazapis | raise Forbidden('Not allowed') |
377 | 7efc9f86 | Sofia Papagiannaki | except (ItemNotExists, VersionNotExists):
|
378 | b956618e | Antony Chazapis | raise ItemNotFound('Container or object does not exist') |
379 | 3436eeb0 | Antony Chazapis | except ValueError: |
380 | 3436eeb0 | Antony Chazapis | raise BadRequest('Invalid sharing header') |
381 | 5df6c6d1 | Antony Chazapis | except QuotaError:
|
382 | 5df6c6d1 | Antony Chazapis | raise RequestEntityTooLarge('Quota exceeded') |
383 | e0f916bb | Antony Chazapis | if public is not None: |
384 | e0f916bb | Antony Chazapis | try:
|
385 | 61efb530 | Antony Chazapis | request.backend.update_object_public(request.user_uniq, dest_account, dest_container, dest_name, public) |
386 | e0f916bb | Antony Chazapis | except NotAllowedError:
|
387 | 297513ba | Antony Chazapis | raise Forbidden('Not allowed') |
388 | 7efc9f86 | Sofia Papagiannaki | except ItemNotExists:
|
389 | e0f916bb | Antony Chazapis | raise ItemNotFound('Object does not exist') |
390 | 7dd293a0 | Antony Chazapis | return version_id
|
391 | b956618e | Antony Chazapis | |
392 | 2715ade4 | Sofia Papagiannaki | |
393 | 1495b972 | Antony Chazapis | def get_int_parameter(p): |
394 | 83dd59c5 | Antony Chazapis | if p is not None: |
395 | 58a6c894 | Antony Chazapis | try:
|
396 | 83dd59c5 | Antony Chazapis | p = int(p)
|
397 | 58a6c894 | Antony Chazapis | except ValueError: |
398 | 58a6c894 | Antony Chazapis | return None |
399 | 83dd59c5 | Antony Chazapis | if p < 0: |
400 | 58a6c894 | Antony Chazapis | return None |
401 | 83dd59c5 | Antony Chazapis | return p
|
402 | 58a6c894 | Antony Chazapis | |
403 | 2715ade4 | Sofia Papagiannaki | |
404 | 22dab079 | Antony Chazapis | def get_content_length(request): |
405 | 1495b972 | Antony Chazapis | content_length = get_int_parameter(request.META.get('CONTENT_LENGTH'))
|
406 | 1495b972 | Antony Chazapis | if content_length is None: |
407 | 1495b972 | Antony Chazapis | raise LengthRequired('Missing or invalid Content-Length header') |
408 | 22dab079 | Antony Chazapis | return content_length
|
409 | 22dab079 | Antony Chazapis | |
410 | 2715ade4 | Sofia Papagiannaki | |
411 | 22dab079 | Antony Chazapis | def get_range(request, size): |
412 | 58a6c894 | Antony Chazapis | """Parse a Range header from the request.
|
413 | 2715ade4 | Sofia Papagiannaki |
|
414 | 22dab079 | Antony Chazapis | Either returns None, when the header is not existent or should be ignored,
|
415 | 22dab079 | Antony Chazapis | or a list of (offset, length) tuples - should be further checked.
|
416 | b956618e | Antony Chazapis | """
|
417 | 2715ade4 | Sofia Papagiannaki | |
418 | 22dab079 | Antony Chazapis | ranges = request.META.get('HTTP_RANGE', '').replace(' ', '') |
419 | 22dab079 | Antony Chazapis | if not ranges.startswith('bytes='): |
420 | b956618e | Antony Chazapis | return None |
421 | 2715ade4 | Sofia Papagiannaki | |
422 | 22dab079 | Antony Chazapis | ret = [] |
423 | 22dab079 | Antony Chazapis | for r in (x.strip() for x in ranges[6:].split(',')): |
424 | 22dab079 | Antony Chazapis | p = re.compile('^(?P<offset>\d*)-(?P<upto>\d*)$')
|
425 | 22dab079 | Antony Chazapis | m = p.match(r) |
426 | 22dab079 | Antony Chazapis | if not m: |
427 | 22dab079 | Antony Chazapis | return None |
428 | 22dab079 | Antony Chazapis | offset = m.group('offset')
|
429 | 22dab079 | Antony Chazapis | upto = m.group('upto')
|
430 | 22dab079 | Antony Chazapis | if offset == '' and upto == '': |
431 | b956618e | Antony Chazapis | return None |
432 | 2715ade4 | Sofia Papagiannaki | |
433 | 22dab079 | Antony Chazapis | if offset != '': |
434 | 22dab079 | Antony Chazapis | offset = int(offset)
|
435 | 22dab079 | Antony Chazapis | if upto != '': |
436 | b956618e | Antony Chazapis | upto = int(upto)
|
437 | 22dab079 | Antony Chazapis | if offset > upto:
|
438 | 22dab079 | Antony Chazapis | return None |
439 | 22dab079 | Antony Chazapis | ret.append((offset, upto - offset + 1))
|
440 | 22dab079 | Antony Chazapis | else:
|
441 | 22dab079 | Antony Chazapis | ret.append((offset, size - offset)) |
442 | b956618e | Antony Chazapis | else:
|
443 | 22dab079 | Antony Chazapis | length = int(upto)
|
444 | 22dab079 | Antony Chazapis | ret.append((size - length, length)) |
445 | 2715ade4 | Sofia Papagiannaki | |
446 | 22dab079 | Antony Chazapis | return ret
|
447 | 22dab079 | Antony Chazapis | |
448 | 2715ade4 | Sofia Papagiannaki | |
449 | 22dab079 | Antony Chazapis | def get_content_range(request): |
450 | 58a6c894 | Antony Chazapis | """Parse a Content-Range header from the request.
|
451 | 2715ade4 | Sofia Papagiannaki |
|
452 | 22dab079 | Antony Chazapis | Either returns None, when the header is not existent or should be ignored,
|
453 | 22dab079 | Antony Chazapis | or an (offset, length, total) tuple - check as length, total may be None.
|
454 | 22dab079 | Antony Chazapis | Returns (None, None, None) if the provided range is '*/*'.
|
455 | 22dab079 | Antony Chazapis | """
|
456 | 2715ade4 | Sofia Papagiannaki | |
457 | 22dab079 | Antony Chazapis | ranges = request.META.get('HTTP_CONTENT_RANGE', '') |
458 | 22dab079 | Antony Chazapis | if not ranges: |
459 | 22dab079 | Antony Chazapis | return None |
460 | 2715ade4 | Sofia Papagiannaki | |
461 | 22dab079 | Antony Chazapis | p = re.compile('^bytes (?P<offset>\d+)-(?P<upto>\d*)/(?P<total>(\d+|\*))$')
|
462 | 22dab079 | Antony Chazapis | m = p.match(ranges) |
463 | 22dab079 | Antony Chazapis | if not m: |
464 | 22dab079 | Antony Chazapis | if ranges == 'bytes */*': |
465 | 22dab079 | Antony Chazapis | return (None, None, None) |
466 | 22dab079 | Antony Chazapis | return None |
467 | 22dab079 | Antony Chazapis | offset = int(m.group('offset')) |
468 | 22dab079 | Antony Chazapis | upto = m.group('upto')
|
469 | 22dab079 | Antony Chazapis | total = m.group('total')
|
470 | 22dab079 | Antony Chazapis | if upto != '': |
471 | 22dab079 | Antony Chazapis | upto = int(upto)
|
472 | b956618e | Antony Chazapis | else:
|
473 | 22dab079 | Antony Chazapis | upto = None
|
474 | 22dab079 | Antony Chazapis | if total != '*': |
475 | 22dab079 | Antony Chazapis | total = int(total)
|
476 | 22dab079 | Antony Chazapis | else:
|
477 | 22dab079 | Antony Chazapis | total = None
|
478 | 70e526a0 | Antony Chazapis | if (upto is not None and offset > upto) or \ |
479 | 70e526a0 | Antony Chazapis | (total is not None and offset >= total) or \ |
480 | 2715ade4 | Sofia Papagiannaki | (total is not None and upto is not None and upto >= total): |
481 | 22dab079 | Antony Chazapis | return None |
482 | 2715ade4 | Sofia Papagiannaki | |
483 | 70e526a0 | Antony Chazapis | if upto is None: |
484 | 22dab079 | Antony Chazapis | length = None
|
485 | 22dab079 | Antony Chazapis | else:
|
486 | 22dab079 | Antony Chazapis | length = upto - offset + 1
|
487 | 22dab079 | Antony Chazapis | return (offset, length, total)
|
488 | b956618e | Antony Chazapis | |
489 | 2715ade4 | Sofia Papagiannaki | |
490 | 3436eeb0 | Antony Chazapis | def get_sharing(request): |
491 | 3436eeb0 | Antony Chazapis | """Parse an X-Object-Sharing header from the request.
|
492 | 2715ade4 | Sofia Papagiannaki |
|
493 | 3436eeb0 | Antony Chazapis | Raises BadRequest on error.
|
494 | 3436eeb0 | Antony Chazapis | """
|
495 | 2715ade4 | Sofia Papagiannaki | |
496 | 3436eeb0 | Antony Chazapis | permissions = request.META.get('HTTP_X_OBJECT_SHARING')
|
497 | cca6c617 | Antony Chazapis | if permissions is None: |
498 | 3436eeb0 | Antony Chazapis | return None |
499 | 2715ade4 | Sofia Papagiannaki | |
500 | 0a7f1671 | Antony Chazapis | # TODO: Document or remove '~' replacing.
|
501 | 0a7f1671 | Antony Chazapis | permissions = permissions.replace('~', '') |
502 | 2715ade4 | Sofia Papagiannaki | |
503 | 3436eeb0 | Antony Chazapis | ret = {} |
504 | cca6c617 | Antony Chazapis | permissions = permissions.replace(' ', '') |
505 | cca6c617 | Antony Chazapis | if permissions == '': |
506 | cca6c617 | Antony Chazapis | return ret
|
507 | cca6c617 | Antony Chazapis | for perm in (x for x in permissions.split(';')): |
508 | cca6c617 | Antony Chazapis | if perm.startswith('read='): |
509 | 2715ade4 | Sofia Papagiannaki | ret['read'] = list(set( |
510 | 2715ade4 | Sofia Papagiannaki | [v.replace(' ', '').lower() for v in perm[5:].split(',')])) |
511 | 02c0c3fa | Antony Chazapis | if '' in ret['read']: |
512 | 02c0c3fa | Antony Chazapis | ret['read'].remove('') |
513 | e8886082 | Antony Chazapis | if '*' in ret['read']: |
514 | e8886082 | Antony Chazapis | ret['read'] = ['*'] |
515 | 3436eeb0 | Antony Chazapis | if len(ret['read']) == 0: |
516 | 3436eeb0 | Antony Chazapis | raise BadRequest('Bad X-Object-Sharing header value') |
517 | 3436eeb0 | Antony Chazapis | elif perm.startswith('write='): |
518 | 2715ade4 | Sofia Papagiannaki | ret['write'] = list(set( |
519 | 2715ade4 | Sofia Papagiannaki | [v.replace(' ', '').lower() for v in perm[6:].split(',')])) |
520 | 02c0c3fa | Antony Chazapis | if '' in ret['write']: |
521 | 02c0c3fa | Antony Chazapis | ret['write'].remove('') |
522 | e8886082 | Antony Chazapis | if '*' in ret['write']: |
523 | e8886082 | Antony Chazapis | ret['write'] = ['*'] |
524 | 3436eeb0 | Antony Chazapis | if len(ret['write']) == 0: |
525 | 3436eeb0 | Antony Chazapis | raise BadRequest('Bad X-Object-Sharing header value') |
526 | 3436eeb0 | Antony Chazapis | else:
|
527 | 3436eeb0 | Antony Chazapis | raise BadRequest('Bad X-Object-Sharing header value') |
528 | 2715ade4 | Sofia Papagiannaki | |
529 | 21a8a6ff | Antony Chazapis | # Keep duplicates only in write list.
|
530 | 2715ade4 | Sofia Papagiannaki | dups = [x for x in ret.get( |
531 | 2715ade4 | Sofia Papagiannaki | 'read', []) if x in ret.get('write', []) and x != '*'] |
532 | 21a8a6ff | Antony Chazapis | if dups:
|
533 | 21a8a6ff | Antony Chazapis | for x in dups: |
534 | 21a8a6ff | Antony Chazapis | ret['read'].remove(x)
|
535 | 21a8a6ff | Antony Chazapis | if len(ret['read']) == 0: |
536 | 21a8a6ff | Antony Chazapis | del(ret['read']) |
537 | 2715ade4 | Sofia Papagiannaki | |
538 | 3436eeb0 | Antony Chazapis | return ret
|
539 | 3436eeb0 | Antony Chazapis | |
540 | 2715ade4 | Sofia Papagiannaki | |
541 | 3ab38c43 | Antony Chazapis | def get_public(request): |
542 | 3ab38c43 | Antony Chazapis | """Parse an X-Object-Public header from the request.
|
543 | 2715ade4 | Sofia Papagiannaki |
|
544 | 3ab38c43 | Antony Chazapis | Raises BadRequest on error.
|
545 | 3ab38c43 | Antony Chazapis | """
|
546 | 2715ade4 | Sofia Papagiannaki | |
547 | 3ab38c43 | Antony Chazapis | public = request.META.get('HTTP_X_OBJECT_PUBLIC')
|
548 | 3ab38c43 | Antony Chazapis | if public is None: |
549 | 3ab38c43 | Antony Chazapis | return None |
550 | 2715ade4 | Sofia Papagiannaki | |
551 | 3ab38c43 | Antony Chazapis | public = public.replace(' ', '').lower() |
552 | 3ab38c43 | Antony Chazapis | if public == 'true': |
553 | 3ab38c43 | Antony Chazapis | return True |
554 | 3ab38c43 | Antony Chazapis | elif public == 'false' or public == '': |
555 | 3ab38c43 | Antony Chazapis | return False |
556 | 3ab38c43 | Antony Chazapis | raise BadRequest('Bad X-Object-Public header value') |
557 | 3ab38c43 | Antony Chazapis | |
558 | 2715ade4 | Sofia Papagiannaki | |
559 | b956618e | Antony Chazapis | def raw_input_socket(request): |
560 | 58a6c894 | Antony Chazapis | """Return the socket for reading the rest of the request."""
|
561 | 2715ade4 | Sofia Papagiannaki | |
562 | b956618e | Antony Chazapis | server_software = request.META.get('SERVER_SOFTWARE')
|
563 | fc1b2a75 | Antony Chazapis | if server_software and server_software.startswith('mod_python'): |
564 | b956618e | Antony Chazapis | return request._req
|
565 | fc1b2a75 | Antony Chazapis | if 'wsgi.input' in request.environ: |
566 | fc1b2a75 | Antony Chazapis | return request.environ['wsgi.input'] |
567 | 08de868d | Antony Chazapis | raise NotImplemented('Unknown server software') |
568 | b956618e | Antony Chazapis | |
569 | 2715ade4 | Sofia Papagiannaki | MAX_UPLOAD_SIZE = 5 * (1024 * 1024 * 1024) # 5GB |
570 | 2715ade4 | Sofia Papagiannaki | |
571 | b956618e | Antony Chazapis | |
572 | c032f34d | Antony Chazapis | def socket_read_iterator(request, length=0, blocksize=4096): |
573 | 58a6c894 | Antony Chazapis | """Return a maximum of blocksize data read from the socket in each iteration.
|
574 | 2715ade4 | Sofia Papagiannaki |
|
575 | 22dab079 | Antony Chazapis | Read up to 'length'. If 'length' is negative, will attempt a chunked read.
|
576 | b956618e | Antony Chazapis | The maximum ammount of data read is controlled by MAX_UPLOAD_SIZE.
|
577 | b956618e | Antony Chazapis | """
|
578 | 2715ade4 | Sofia Papagiannaki | |
579 | c032f34d | Antony Chazapis | sock = raw_input_socket(request) |
580 | 2715ade4 | Sofia Papagiannaki | if length < 0: # Chunked transfers |
581 | c032f34d | Antony Chazapis | # Small version (server does the dechunking).
|
582 | 032dc768 | Antony Chazapis | if request.environ.get('mod_wsgi.input_chunked', None) or request.META['SERVER_SOFTWARE'].startswith('gunicorn'): |
583 | c032f34d | Antony Chazapis | while length < MAX_UPLOAD_SIZE:
|
584 | c032f34d | Antony Chazapis | data = sock.read(blocksize) |
585 | c032f34d | Antony Chazapis | if data == '': |
586 | c032f34d | Antony Chazapis | return
|
587 | c032f34d | Antony Chazapis | yield data
|
588 | c032f34d | Antony Chazapis | raise BadRequest('Maximum size is reached') |
589 | 2715ade4 | Sofia Papagiannaki | |
590 | c032f34d | Antony Chazapis | # Long version (do the dechunking).
|
591 | 22dab079 | Antony Chazapis | data = ''
|
592 | b956618e | Antony Chazapis | while length < MAX_UPLOAD_SIZE:
|
593 | 22dab079 | Antony Chazapis | # Get chunk size.
|
594 | 22dab079 | Antony Chazapis | if hasattr(sock, 'readline'): |
595 | 22dab079 | Antony Chazapis | chunk_length = sock.readline() |
596 | 22dab079 | Antony Chazapis | else:
|
597 | 22dab079 | Antony Chazapis | chunk_length = ''
|
598 | 22dab079 | Antony Chazapis | while chunk_length[-1:] != '\n': |
599 | 22dab079 | Antony Chazapis | chunk_length += sock.read(1)
|
600 | 22dab079 | Antony Chazapis | chunk_length.strip() |
601 | b956618e | Antony Chazapis | pos = chunk_length.find(';')
|
602 | b956618e | Antony Chazapis | if pos >= 0: |
603 | b956618e | Antony Chazapis | chunk_length = chunk_length[:pos] |
604 | b956618e | Antony Chazapis | try:
|
605 | b956618e | Antony Chazapis | chunk_length = int(chunk_length, 16) |
606 | b956618e | Antony Chazapis | except Exception, e: |
607 | 2715ade4 | Sofia Papagiannaki | raise BadRequest('Bad chunk size') |
608 | 2715ade4 | Sofia Papagiannaki | # TODO: Change to something more appropriate.
|
609 | 22dab079 | Antony Chazapis | # Check if done.
|
610 | b956618e | Antony Chazapis | if chunk_length == 0: |
611 | 22dab079 | Antony Chazapis | if len(data) > 0: |
612 | 22dab079 | Antony Chazapis | yield data
|
613 | b956618e | Antony Chazapis | return
|
614 | 22dab079 | Antony Chazapis | # Get the actual data.
|
615 | b956618e | Antony Chazapis | while chunk_length > 0: |
616 | 22dab079 | Antony Chazapis | chunk = sock.read(min(chunk_length, blocksize))
|
617 | 22dab079 | Antony Chazapis | chunk_length -= len(chunk)
|
618 | 623a0cf4 | Sofia Papagiannaki | if length > 0: |
619 | 623a0cf4 | Sofia Papagiannaki | length += len(chunk)
|
620 | 22dab079 | Antony Chazapis | data += chunk |
621 | 22dab079 | Antony Chazapis | if len(data) >= blocksize: |
622 | 22dab079 | Antony Chazapis | ret = data[:blocksize] |
623 | 22dab079 | Antony Chazapis | data = data[blocksize:] |
624 | 22dab079 | Antony Chazapis | yield ret
|
625 | 2715ade4 | Sofia Papagiannaki | sock.read(2) # CRLF |
626 | 32a437b1 | Sofia Papagiannaki | raise BadRequest('Maximum size is reached') |
627 | b956618e | Antony Chazapis | else:
|
628 | b956618e | Antony Chazapis | if length > MAX_UPLOAD_SIZE:
|
629 | 32a437b1 | Sofia Papagiannaki | raise BadRequest('Maximum size is reached') |
630 | b956618e | Antony Chazapis | while length > 0: |
631 | b956618e | Antony Chazapis | data = sock.read(min(length, blocksize))
|
632 | 7b25e082 | Antony Chazapis | if not data: |
633 | 7b25e082 | Antony Chazapis | raise BadRequest()
|
634 | b956618e | Antony Chazapis | length -= len(data)
|
635 | b956618e | Antony Chazapis | yield data
|
636 | b956618e | Antony Chazapis | |
637 | 2715ade4 | Sofia Papagiannaki | |
638 | 817890f2 | Antony Chazapis | class SaveToBackendHandler(FileUploadHandler): |
639 | 817890f2 | Antony Chazapis | """Handle a file from an HTML form the django way."""
|
640 | 2715ade4 | Sofia Papagiannaki | |
641 | 817890f2 | Antony Chazapis | def __init__(self, request=None): |
642 | 817890f2 | Antony Chazapis | super(SaveToBackendHandler, self).__init__(request) |
643 | 817890f2 | Antony Chazapis | self.backend = request.backend
|
644 | 2715ade4 | Sofia Papagiannaki | |
645 | 817890f2 | Antony Chazapis | def put_data(self, length): |
646 | 817890f2 | Antony Chazapis | if len(self.data) >= length: |
647 | 817890f2 | Antony Chazapis | block = self.data[:length]
|
648 | 817890f2 | Antony Chazapis | self.file.hashmap.append(self.backend.put_block(block)) |
649 | 817890f2 | Antony Chazapis | self.md5.update(block)
|
650 | 817890f2 | Antony Chazapis | self.data = self.data[length:] |
651 | 2715ade4 | Sofia Papagiannaki | |
652 | 817890f2 | Antony Chazapis | def new_file(self, field_name, file_name, content_type, content_length, charset=None): |
653 | 2715ade4 | Sofia Papagiannaki | self.md5 = hashlib.md5()
|
654 | 817890f2 | Antony Chazapis | self.data = '' |
655 | 2715ade4 | Sofia Papagiannaki | self.file = UploadedFile(
|
656 | 2715ade4 | Sofia Papagiannaki | name=file_name, content_type=content_type, charset=charset) |
657 | 817890f2 | Antony Chazapis | self.file.size = 0 |
658 | 817890f2 | Antony Chazapis | self.file.hashmap = []
|
659 | 2715ade4 | Sofia Papagiannaki | |
660 | 817890f2 | Antony Chazapis | def receive_data_chunk(self, raw_data, start): |
661 | 817890f2 | Antony Chazapis | self.data += raw_data
|
662 | 817890f2 | Antony Chazapis | self.file.size += len(raw_data) |
663 | 817890f2 | Antony Chazapis | self.put_data(self.request.backend.block_size) |
664 | 817890f2 | Antony Chazapis | return None |
665 | 2715ade4 | Sofia Papagiannaki | |
666 | 817890f2 | Antony Chazapis | def file_complete(self, file_size): |
667 | 817890f2 | Antony Chazapis | l = len(self.data) |
668 | 817890f2 | Antony Chazapis | if l > 0: |
669 | 817890f2 | Antony Chazapis | self.put_data(l)
|
670 | 817890f2 | Antony Chazapis | self.file.etag = self.md5.hexdigest().lower() |
671 | 817890f2 | Antony Chazapis | return self.file |
672 | 817890f2 | Antony Chazapis | |
673 | 2715ade4 | Sofia Papagiannaki | |
674 | 22dab079 | Antony Chazapis | class ObjectWrapper(object): |
675 | 58a6c894 | Antony Chazapis | """Return the object's data block-per-block in each iteration.
|
676 | 2715ade4 | Sofia Papagiannaki |
|
677 | 22dab079 | Antony Chazapis | Read from the object using the offset and length provided in each entry of the range list.
|
678 | 22dab079 | Antony Chazapis | """
|
679 | 2715ade4 | Sofia Papagiannaki | |
680 | 39593b2b | Giorgos Verigakis | def __init__(self, backend, ranges, sizes, hashmaps, boundary): |
681 | 39593b2b | Giorgos Verigakis | self.backend = backend
|
682 | 22dab079 | Antony Chazapis | self.ranges = ranges
|
683 | 8cb45c13 | Antony Chazapis | self.sizes = sizes
|
684 | 8cb45c13 | Antony Chazapis | self.hashmaps = hashmaps
|
685 | 22dab079 | Antony Chazapis | self.boundary = boundary
|
686 | 8cb45c13 | Antony Chazapis | self.size = sum(self.sizes) |
687 | 2715ade4 | Sofia Papagiannaki | |
688 | 8cb45c13 | Antony Chazapis | self.file_index = 0 |
689 | 8cb45c13 | Antony Chazapis | self.block_index = 0 |
690 | 8cb45c13 | Antony Chazapis | self.block_hash = -1 |
691 | 22dab079 | Antony Chazapis | self.block = '' |
692 | 2715ade4 | Sofia Papagiannaki | |
693 | 22dab079 | Antony Chazapis | self.range_index = -1 |
694 | 22dab079 | Antony Chazapis | self.offset, self.length = self.ranges[0] |
695 | 2715ade4 | Sofia Papagiannaki | |
696 | 22dab079 | Antony Chazapis | def __iter__(self): |
697 | 22dab079 | Antony Chazapis | return self |
698 | 2715ade4 | Sofia Papagiannaki | |
699 | 22dab079 | Antony Chazapis | def part_iterator(self): |
700 | 22dab079 | Antony Chazapis | if self.length > 0: |
701 | 8cb45c13 | Antony Chazapis | # Get the file for the current offset.
|
702 | 8cb45c13 | Antony Chazapis | file_size = self.sizes[self.file_index] |
703 | 8cb45c13 | Antony Chazapis | while self.offset >= file_size: |
704 | 8cb45c13 | Antony Chazapis | self.offset -= file_size
|
705 | 8cb45c13 | Antony Chazapis | self.file_index += 1 |
706 | 8cb45c13 | Antony Chazapis | file_size = self.sizes[self.file_index] |
707 | 2715ade4 | Sofia Papagiannaki | |
708 | 8cb45c13 | Antony Chazapis | # Get the block for the current position.
|
709 | 39593b2b | Giorgos Verigakis | self.block_index = int(self.offset / self.backend.block_size) |
710 | 8cb45c13 | Antony Chazapis | if self.block_hash != self.hashmaps[self.file_index][self.block_index]: |
711 | 2715ade4 | Sofia Papagiannaki | self.block_hash = self.hashmaps[ |
712 | 2715ade4 | Sofia Papagiannaki | self.file_index][self.block_index] |
713 | 22dab079 | Antony Chazapis | try:
|
714 | 39593b2b | Giorgos Verigakis | self.block = self.backend.get_block(self.block_hash) |
715 | 7efc9f86 | Sofia Papagiannaki | except ItemNotExists:
|
716 | 22dab079 | Antony Chazapis | raise ItemNotFound('Block does not exist') |
717 | 2715ade4 | Sofia Papagiannaki | |
718 | 22dab079 | Antony Chazapis | # Get the data from the block.
|
719 | 39593b2b | Giorgos Verigakis | bo = self.offset % self.backend.block_size |
720 | c9865fe1 | Antony Chazapis | bs = self.backend.block_size
|
721 | 45cf0bc8 | Antony Chazapis | if (self.block_index == len(self.hashmaps[self.file_index]) - 1 and |
722 | 2715ade4 | Sofia Papagiannaki | self.sizes[self.file_index] % self.backend.block_size): |
723 | c9865fe1 | Antony Chazapis | bs = self.sizes[self.file_index] % self.backend.block_size |
724 | c9865fe1 | Antony Chazapis | bl = min(self.length, bs - bo) |
725 | 22dab079 | Antony Chazapis | data = self.block[bo:bo + bl]
|
726 | 22dab079 | Antony Chazapis | self.offset += bl
|
727 | 22dab079 | Antony Chazapis | self.length -= bl
|
728 | 22dab079 | Antony Chazapis | return data
|
729 | 22dab079 | Antony Chazapis | else:
|
730 | 22dab079 | Antony Chazapis | raise StopIteration |
731 | 2715ade4 | Sofia Papagiannaki | |
732 | 22dab079 | Antony Chazapis | def next(self): |
733 | 22dab079 | Antony Chazapis | if len(self.ranges) == 1: |
734 | 22dab079 | Antony Chazapis | return self.part_iterator() |
735 | 22dab079 | Antony Chazapis | if self.range_index == len(self.ranges): |
736 | 22dab079 | Antony Chazapis | raise StopIteration |
737 | 22dab079 | Antony Chazapis | try:
|
738 | 22dab079 | Antony Chazapis | if self.range_index == -1: |
739 | 22dab079 | Antony Chazapis | raise StopIteration |
740 | 22dab079 | Antony Chazapis | return self.part_iterator() |
741 | 22dab079 | Antony Chazapis | except StopIteration: |
742 | 22dab079 | Antony Chazapis | self.range_index += 1 |
743 | 22dab079 | Antony Chazapis | out = [] |
744 | 22dab079 | Antony Chazapis | if self.range_index < len(self.ranges): |
745 | 22dab079 | Antony Chazapis | # Part header.
|
746 | 22dab079 | Antony Chazapis | self.offset, self.length = self.ranges[self.range_index] |
747 | 8cb45c13 | Antony Chazapis | self.file_index = 0 |
748 | 22dab079 | Antony Chazapis | if self.range_index > 0: |
749 | 22dab079 | Antony Chazapis | out.append('')
|
750 | 22dab079 | Antony Chazapis | out.append('--' + self.boundary) |
751 | 2715ade4 | Sofia Papagiannaki | out.append('Content-Range: bytes %d-%d/%d' % (
|
752 | 2715ade4 | Sofia Papagiannaki | self.offset, self.offset + self.length - 1, self.size)) |
753 | 22dab079 | Antony Chazapis | out.append('Content-Transfer-Encoding: binary')
|
754 | 22dab079 | Antony Chazapis | out.append('')
|
755 | 22dab079 | Antony Chazapis | out.append('')
|
756 | 22dab079 | Antony Chazapis | return '\r\n'.join(out) |
757 | 22dab079 | Antony Chazapis | else:
|
758 | 22dab079 | Antony Chazapis | # Footer.
|
759 | 22dab079 | Antony Chazapis | out.append('')
|
760 | 22dab079 | Antony Chazapis | out.append('--' + self.boundary + '--') |
761 | 22dab079 | Antony Chazapis | out.append('')
|
762 | 22dab079 | Antony Chazapis | return '\r\n'.join(out) |
763 | 22dab079 | Antony Chazapis | |
764 | 2715ade4 | Sofia Papagiannaki | |
765 | 8cb45c13 | Antony Chazapis | def object_data_response(request, sizes, hashmaps, meta, public=False): |
766 | 7bef5750 | Antony Chazapis | """Get the HttpResponse object for replying with the object's data."""
|
767 | 2715ade4 | Sofia Papagiannaki | |
768 | 7bef5750 | Antony Chazapis | # Range handling.
|
769 | 8cb45c13 | Antony Chazapis | size = sum(sizes)
|
770 | 7bef5750 | Antony Chazapis | ranges = get_range(request, size) |
771 | 7bef5750 | Antony Chazapis | if ranges is None: |
772 | 7bef5750 | Antony Chazapis | ranges = [(0, size)]
|
773 | 7bef5750 | Antony Chazapis | ret = 200
|
774 | 7bef5750 | Antony Chazapis | else:
|
775 | 7bef5750 | Antony Chazapis | check = [True for offset, length in ranges if |
776 | 2715ade4 | Sofia Papagiannaki | length <= 0 or length > size or |
777 | 2715ade4 | Sofia Papagiannaki | offset < 0 or offset >= size or |
778 | 2715ade4 | Sofia Papagiannaki | offset + length > size] |
779 | 7bef5750 | Antony Chazapis | if len(check) > 0: |
780 | 6d1e6dce | Sofia Papagiannaki | raise RangeNotSatisfiable('Requested range exceeds object limits') |
781 | 7bef5750 | Antony Chazapis | ret = 206
|
782 | 15d465b8 | Antony Chazapis | if_range = request.META.get('HTTP_IF_RANGE')
|
783 | 15d465b8 | Antony Chazapis | if if_range:
|
784 | 6d1e6dce | Sofia Papagiannaki | try:
|
785 | 15d465b8 | Antony Chazapis | # Modification time has passed instead.
|
786 | 6d1e6dce | Sofia Papagiannaki | last_modified = parse_http_date(if_range) |
787 | 6d1e6dce | Sofia Papagiannaki | if last_modified != meta['modified']: |
788 | 6d1e6dce | Sofia Papagiannaki | ranges = [(0, size)]
|
789 | 6d1e6dce | Sofia Papagiannaki | ret = 200
|
790 | 6d1e6dce | Sofia Papagiannaki | except ValueError: |
791 | 33b4e4a6 | Antony Chazapis | if if_range != meta['checksum']: |
792 | 6d1e6dce | Sofia Papagiannaki | ranges = [(0, size)]
|
793 | 6d1e6dce | Sofia Papagiannaki | ret = 200
|
794 | 2715ade4 | Sofia Papagiannaki | |
795 | 7bef5750 | Antony Chazapis | if ret == 206 and len(ranges) > 1: |
796 | 7bef5750 | Antony Chazapis | boundary = uuid.uuid4().hex |
797 | 7bef5750 | Antony Chazapis | else:
|
798 | 7bef5750 | Antony Chazapis | boundary = ''
|
799 | 39593b2b | Giorgos Verigakis | wrapper = ObjectWrapper(request.backend, ranges, sizes, hashmaps, boundary) |
800 | 7bef5750 | Antony Chazapis | response = HttpResponse(wrapper, status=ret) |
801 | 02c0c3fa | Antony Chazapis | put_object_headers(response, meta, public) |
802 | 7bef5750 | Antony Chazapis | if ret == 206: |
803 | 7bef5750 | Antony Chazapis | if len(ranges) == 1: |
804 | 7bef5750 | Antony Chazapis | offset, length = ranges[0]
|
805 | 2715ade4 | Sofia Papagiannaki | response[ |
806 | 2715ade4 | Sofia Papagiannaki | 'Content-Length'] = length # Update with the correct length. |
807 | 2715ade4 | Sofia Papagiannaki | response['Content-Range'] = 'bytes %d-%d/%d' % ( |
808 | 2715ade4 | Sofia Papagiannaki | offset, offset + length - 1, size)
|
809 | 7bef5750 | Antony Chazapis | else:
|
810 | 7bef5750 | Antony Chazapis | del(response['Content-Length']) |
811 | 2715ade4 | Sofia Papagiannaki | response['Content-Type'] = 'multipart/byteranges; boundary=%s' % ( |
812 | 2715ade4 | Sofia Papagiannaki | boundary,) |
813 | 7bef5750 | Antony Chazapis | return response
|
814 | 7bef5750 | Antony Chazapis | |
815 | 2715ade4 | Sofia Papagiannaki | |
816 | 39593b2b | Giorgos Verigakis | def put_object_block(request, hashmap, data, offset): |
817 | cb146cf9 | Antony Chazapis | """Put one block of data at the given offset."""
|
818 | 2715ade4 | Sofia Papagiannaki | |
819 | 39593b2b | Giorgos Verigakis | bi = int(offset / request.backend.block_size)
|
820 | 39593b2b | Giorgos Verigakis | bo = offset % request.backend.block_size |
821 | 39593b2b | Giorgos Verigakis | bl = min(len(data), request.backend.block_size - bo) |
822 | cb146cf9 | Antony Chazapis | if bi < len(hashmap): |
823 | 39593b2b | Giorgos Verigakis | hashmap[bi] = request.backend.update_block(hashmap[bi], data[:bl], bo) |
824 | cb146cf9 | Antony Chazapis | else:
|
825 | 39593b2b | Giorgos Verigakis | hashmap.append(request.backend.put_block(('\x00' * bo) + data[:bl]))
|
826 | 2715ade4 | Sofia Papagiannaki | return bl # Return ammount of data written. |
827 | 2715ade4 | Sofia Papagiannaki | |
828 | cb146cf9 | Antony Chazapis | |
829 | b3155065 | Antony Chazapis | def hashmap_md5(backend, hashmap, size): |
830 | cddcf432 | chazapis | """Produce the MD5 sum from the data in the hashmap."""
|
831 | 2715ade4 | Sofia Papagiannaki | |
832 | cddcf432 | chazapis | # TODO: Search backend for the MD5 of another object with the same hashmap and size...
|
833 | cddcf432 | chazapis | md5 = hashlib.md5() |
834 | b3155065 | Antony Chazapis | bs = backend.block_size |
835 | cddcf432 | chazapis | for bi, hash in enumerate(hashmap): |
836 | 2715ade4 | Sofia Papagiannaki | data = backend.get_block(hash) # Blocks come in padded. |
837 | cddcf432 | chazapis | if bi == len(hashmap) - 1: |
838 | c9865fe1 | Antony Chazapis | data = data[:size % bs] |
839 | c9865fe1 | Antony Chazapis | md5.update(data) |
840 | cddcf432 | chazapis | return md5.hexdigest().lower()
|
841 | 49133392 | Antony Chazapis | |
842 | 2715ade4 | Sofia Papagiannaki | |
843 | af7bb62f | Antony Chazapis | def simple_list_response(request, l): |
844 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'text': |
845 | 6b6b6c1e | Antony Chazapis | return '\n'.join(l) + '\n' |
846 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'xml': |
847 | af7bb62f | Antony Chazapis | return render_to_string('items.xml', {'items': l}) |
848 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'json': |
849 | 6b6b6c1e | Antony Chazapis | return json.dumps(l)
|
850 | 6b6b6c1e | Antony Chazapis | |
851 | 2715ade4 | Sofia Papagiannaki | |
852 | 717adf72 | Sofia Papagiannaki | |
853 | 35d42381 | Vangelis Koukis | def _get_backend(): |
854 | a7dff008 | Antony Chazapis | backend = connect_backend(db_module=BACKEND_DB_MODULE, |
855 | a7dff008 | Antony Chazapis | db_connection=BACKEND_DB_CONNECTION, |
856 | a7dff008 | Antony Chazapis | block_module=BACKEND_BLOCK_MODULE, |
857 | a7dff008 | Antony Chazapis | block_path=BACKEND_BLOCK_PATH, |
858 | 1427ce62 | Sofia Papagiannaki | block_umask=BACKEND_BLOCK_UMASK, |
859 | a7dff008 | Antony Chazapis | queue_module=BACKEND_QUEUE_MODULE, |
860 | f4fbb0fa | Sofia Papagiannaki | queue_hosts=BACKEND_QUEUE_HOSTS, |
861 | f4fbb0fa | Sofia Papagiannaki | queue_exchange=BACKEND_QUEUE_EXCHANGE) |
862 | a7dff008 | Antony Chazapis | backend.default_policy['quota'] = BACKEND_QUOTA
|
863 | a7dff008 | Antony Chazapis | backend.default_policy['versioning'] = BACKEND_VERSIONING
|
864 | 228de81b | Antony Chazapis | return backend
|
865 | 228de81b | Antony Chazapis | |
866 | 2715ade4 | Sofia Papagiannaki | |
867 | 35d42381 | Vangelis Koukis | def _pooled_backend_close(backend): |
868 | 35d42381 | Vangelis Koukis | backend._pool.pool_put(backend) |
869 | 35d42381 | Vangelis Koukis | |
870 | 35d42381 | Vangelis Koukis | |
871 | 35d42381 | Vangelis Koukis | from synnefo.lib.pool import ObjectPool |
872 | 35d42381 | Vangelis Koukis | from new import instancemethod |
873 | 35d42381 | Vangelis Koukis | |
874 | 35d42381 | Vangelis Koukis | USAGE_LIMIT = 500
|
875 | 35d42381 | Vangelis Koukis | POOL_SIZE = 5
|
876 | 35d42381 | Vangelis Koukis | |
877 | 35d42381 | Vangelis Koukis | class PithosBackendPool(ObjectPool): |
878 | 35d42381 | Vangelis Koukis | def _pool_create(self): |
879 | 35d42381 | Vangelis Koukis | backend = _get_backend() |
880 | 35d42381 | Vangelis Koukis | backend._real_close = backend.close |
881 | 35d42381 | Vangelis Koukis | backend.close = instancemethod(_pooled_backend_close, backend, |
882 | 35d42381 | Vangelis Koukis | type(backend))
|
883 | 35d42381 | Vangelis Koukis | backend._pool = self
|
884 | 35d42381 | Vangelis Koukis | backend._use_count = USAGE_LIMIT |
885 | 35d42381 | Vangelis Koukis | return backend
|
886 | 35d42381 | Vangelis Koukis | |
887 | 35d42381 | Vangelis Koukis | def _pool_cleanup(self, backend): |
888 | 35d42381 | Vangelis Koukis | c = backend._use_count - 1
|
889 | 35d42381 | Vangelis Koukis | if c < 0: |
890 | 35d42381 | Vangelis Koukis | backend._real_close() |
891 | 35d42381 | Vangelis Koukis | return True |
892 | 35d42381 | Vangelis Koukis | |
893 | 35d42381 | Vangelis Koukis | backend._use_count = c |
894 | 35d42381 | Vangelis Koukis | return False |
895 | 35d42381 | Vangelis Koukis | |
896 | 35d42381 | Vangelis Koukis | _pithos_backend_pool = PithosBackendPool(size=POOL_SIZE) |
897 | 35d42381 | Vangelis Koukis | |
898 | 35d42381 | Vangelis Koukis | |
899 | 35d42381 | Vangelis Koukis | def get_backend(): |
900 | 35d42381 | Vangelis Koukis | return _pithos_backend_pool.pool_get()
|
901 | 35d42381 | Vangelis Koukis | |
902 | 35d42381 | Vangelis Koukis | |
903 | 9fefc052 | Antony Chazapis | def update_request_headers(request): |
904 | 9fefc052 | Antony Chazapis | # Handle URL-encoded keys and values.
|
905 | 2715ade4 | Sofia Papagiannaki | meta = dict([(
|
906 | 2715ade4 | Sofia Papagiannaki | k, v) for k, v in request.META.iteritems() if k.startswith('HTTP_')]) |
907 | 88283e9e | Antony Chazapis | for k, v in meta.iteritems(): |
908 | 88283e9e | Antony Chazapis | try:
|
909 | 88283e9e | Antony Chazapis | k.decode('ascii')
|
910 | 88283e9e | Antony Chazapis | v.decode('ascii')
|
911 | 88283e9e | Antony Chazapis | except UnicodeDecodeError: |
912 | 88283e9e | Antony Chazapis | raise BadRequest('Bad character in headers.') |
913 | 88283e9e | Antony Chazapis | if '%' in k or '%' in v: |
914 | 88283e9e | Antony Chazapis | del(request.META[k])
|
915 | 2715ade4 | Sofia Papagiannaki | request.META[unquote(k)] = smart_unicode(unquote( |
916 | 2715ade4 | Sofia Papagiannaki | v), strings_only=True)
|
917 | 2715ade4 | Sofia Papagiannaki | |
918 | 9fefc052 | Antony Chazapis | |
919 | b956618e | Antony Chazapis | def update_response_headers(request, response): |
920 | b956618e | Antony Chazapis | if request.serialization == 'xml': |
921 | b956618e | Antony Chazapis | response['Content-Type'] = 'application/xml; charset=UTF-8' |
922 | b956618e | Antony Chazapis | elif request.serialization == 'json': |
923 | b956618e | Antony Chazapis | response['Content-Type'] = 'application/json; charset=UTF-8' |
924 | 22dab079 | Antony Chazapis | elif not response['Content-Type']: |
925 | b956618e | Antony Chazapis | response['Content-Type'] = 'text/plain; charset=UTF-8' |
926 | 2715ade4 | Sofia Papagiannaki | |
927 | 9fefc052 | Antony Chazapis | if (not response.has_header('Content-Length') and |
928 | 9fefc052 | Antony Chazapis | not (response.has_header('Content-Type') and |
929 | 9fefc052 | Antony Chazapis | response['Content-Type'].startswith('multipart/byteranges'))): |
930 | b980169d | Antony Chazapis | response['Content-Length'] = len(response.content) |
931 | 2715ade4 | Sofia Papagiannaki | |
932 | 9fefc052 | Antony Chazapis | # URL-encode unicode in headers.
|
933 | 9fefc052 | Antony Chazapis | meta = response.items() |
934 | 9fefc052 | Antony Chazapis | for k, v in meta: |
935 | 88283e9e | Antony Chazapis | if (k.startswith('X-Account-') or k.startswith('X-Container-') or |
936 | 2715ade4 | Sofia Papagiannaki | k.startswith('X-Object-') or k.startswith('Content-')): |
937 | 9fefc052 | Antony Chazapis | del(response[k])
|
938 | 88283e9e | Antony Chazapis | response[quote(k)] = quote(v, safe='/=,:@; ')
|
939 | b956618e | Antony Chazapis | |
940 | 2715ade4 | Sofia Papagiannaki | |
941 | b956618e | Antony Chazapis | def render_fault(request, fault): |
942 | a7dff008 | Antony Chazapis | if isinstance(fault, InternalServerError) and settings.DEBUG: |
943 | b956618e | Antony Chazapis | fault.details = format_exc(fault) |
944 | 2715ade4 | Sofia Papagiannaki | |
945 | b956618e | Antony Chazapis | request.serialization = 'text'
|
946 | 08de868d | Antony Chazapis | data = fault.message + '\n'
|
947 | 08de868d | Antony Chazapis | if fault.details:
|
948 | 08de868d | Antony Chazapis | data += '\n' + fault.details
|
949 | b956618e | Antony Chazapis | response = HttpResponse(data, status=fault.code) |
950 | b956618e | Antony Chazapis | update_response_headers(request, response) |
951 | b956618e | Antony Chazapis | return response
|
952 | b956618e | Antony Chazapis | |
953 | 2715ade4 | Sofia Papagiannaki | |
954 | b956618e | Antony Chazapis | def request_serialization(request, format_allowed=False): |
955 | 58a6c894 | Antony Chazapis | """Return the serialization format requested.
|
956 | 2715ade4 | Sofia Papagiannaki |
|
957 | b956618e | Antony Chazapis | Valid formats are 'text' and 'json', 'xml' if 'format_allowed' is True.
|
958 | b956618e | Antony Chazapis | """
|
959 | 2715ade4 | Sofia Papagiannaki | |
960 | b956618e | Antony Chazapis | if not format_allowed: |
961 | b956618e | Antony Chazapis | return 'text' |
962 | 2715ade4 | Sofia Papagiannaki | |
963 | b956618e | Antony Chazapis | format = request.GET.get('format')
|
964 | b956618e | Antony Chazapis | if format == 'json': |
965 | b956618e | Antony Chazapis | return 'json' |
966 | b956618e | Antony Chazapis | elif format == 'xml': |
967 | b956618e | Antony Chazapis | return 'xml' |
968 | 2715ade4 | Sofia Papagiannaki | |
969 | f9f15f92 | Antony Chazapis | for item in request.META.get('HTTP_ACCEPT', '').split(','): |
970 | f9f15f92 | Antony Chazapis | accept, sep, rest = item.strip().partition(';')
|
971 | f9f15f92 | Antony Chazapis | if accept == 'application/json': |
972 | f9f15f92 | Antony Chazapis | return 'json' |
973 | f9f15f92 | Antony Chazapis | elif accept == 'application/xml' or accept == 'text/xml': |
974 | f9f15f92 | Antony Chazapis | return 'xml' |
975 | 2715ade4 | Sofia Papagiannaki | |
976 | b956618e | Antony Chazapis | return 'text' |
977 | b956618e | Antony Chazapis | |
978 | 2715ade4 | Sofia Papagiannaki | |
979 | 297513ba | Antony Chazapis | def api_method(http_method=None, format_allowed=False, user_required=True): |
980 | 58a6c894 | Antony Chazapis | """Decorator function for views that implement an API method."""
|
981 | 2715ade4 | Sofia Papagiannaki | |
982 | b956618e | Antony Chazapis | def decorator(func): |
983 | b956618e | Antony Chazapis | @wraps(func)
|
984 | b956618e | Antony Chazapis | def wrapper(request, *args, **kwargs): |
985 | b956618e | Antony Chazapis | try:
|
986 | b956618e | Antony Chazapis | if http_method and request.method != http_method: |
987 | b956618e | Antony Chazapis | raise BadRequest('Method not allowed.') |
988 | 2715ade4 | Sofia Papagiannaki | |
989 | dfdf4802 | Sofia Papagiannaki | if user_required:
|
990 | dfdf4802 | Sofia Papagiannaki | token = None
|
991 | dfdf4802 | Sofia Papagiannaki | if request.method in ('HEAD', 'GET') and COOKIE_NAME in request.COOKIES: |
992 | 2715ade4 | Sofia Papagiannaki | cookie_value = unquote( |
993 | 2715ade4 | Sofia Papagiannaki | request.COOKIES.get(COOKIE_NAME, ''))
|
994 | dfdf4802 | Sofia Papagiannaki | if cookie_value and '|' in cookie_value: |
995 | dfdf4802 | Sofia Papagiannaki | token = cookie_value.split('|', 1)[1] |
996 | 2715ade4 | Sofia Papagiannaki | get_user(request, |
997 | 2715ade4 | Sofia Papagiannaki | AUTHENTICATION_URL, AUTHENTICATION_USERS, token) |
998 | dfdf4802 | Sofia Papagiannaki | if getattr(request, 'user', None) is None: |
999 | dfdf4802 | Sofia Papagiannaki | raise Unauthorized('Access denied') |
1000 | 2715ade4 | Sofia Papagiannaki | |
1001 | b956618e | Antony Chazapis | # The args variable may contain up to (account, container, object).
|
1002 | b956618e | Antony Chazapis | if len(args) > 1 and len(args[1]) > 256: |
1003 | b956618e | Antony Chazapis | raise BadRequest('Container name too large.') |
1004 | b956618e | Antony Chazapis | if len(args) > 2 and len(args[2]) > 1024: |
1005 | b956618e | Antony Chazapis | raise BadRequest('Object name too large.') |
1006 | 2715ade4 | Sofia Papagiannaki | |
1007 | 9fefc052 | Antony Chazapis | # Format and check headers.
|
1008 | 9fefc052 | Antony Chazapis | update_request_headers(request) |
1009 | 2715ade4 | Sofia Papagiannaki | |
1010 | b956618e | Antony Chazapis | # Fill in custom request variables.
|
1011 | 2715ade4 | Sofia Papagiannaki | request.serialization = request_serialization( |
1012 | 2715ade4 | Sofia Papagiannaki | request, format_allowed) |
1013 | 228de81b | Antony Chazapis | request.backend = get_backend() |
1014 | 2715ade4 | Sofia Papagiannaki | |
1015 | b956618e | Antony Chazapis | response = func(request, *args, **kwargs) |
1016 | b956618e | Antony Chazapis | update_response_headers(request, response) |
1017 | b956618e | Antony Chazapis | return response
|
1018 | b956618e | Antony Chazapis | except Fault, fault:
|
1019 | b956618e | Antony Chazapis | return render_fault(request, fault)
|
1020 | b956618e | Antony Chazapis | except BaseException, e: |
1021 | b956618e | Antony Chazapis | logger.exception('Unexpected error: %s' % e)
|
1022 | dfdf4802 | Sofia Papagiannaki | fault = InternalServerError('Unexpected error: %s' % e)
|
1023 | b956618e | Antony Chazapis | return render_fault(request, fault)
|
1024 | 7b25e082 | Antony Chazapis | finally:
|
1025 | 297513ba | Antony Chazapis | if getattr(request, 'backend', None) is not None: |
1026 | d14fe290 | Antony Chazapis | request.backend.close() |
1027 | b956618e | Antony Chazapis | return wrapper
|
1028 | b956618e | Antony Chazapis | return decorator |