root / pithos / public / functions.py @ 3436eeb0
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1 | f7b1d2af | Antony Chazapis | # Copyright 2011 GRNET S.A. All rights reserved.
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2 | f7b1d2af | Antony Chazapis | #
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3 | f7b1d2af | Antony Chazapis | # Redistribution and use in source and binary forms, with or
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4 | f7b1d2af | Antony Chazapis | # without modification, are permitted provided that the following
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5 | f7b1d2af | Antony Chazapis | # conditions are met:
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6 | f7b1d2af | Antony Chazapis | #
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7 | f7b1d2af | Antony Chazapis | # 1. Redistributions of source code must retain the above
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8 | f7b1d2af | Antony Chazapis | # copyright notice, this list of conditions and the following
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9 | f7b1d2af | Antony Chazapis | # disclaimer.
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10 | f7b1d2af | Antony Chazapis | #
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11 | f7b1d2af | Antony Chazapis | # 2. Redistributions in binary form must reproduce the above
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12 | f7b1d2af | Antony Chazapis | # copyright notice, this list of conditions and the following
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13 | f7b1d2af | Antony Chazapis | # disclaimer in the documentation and/or other materials
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14 | f7b1d2af | Antony Chazapis | # provided with the distribution.
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15 | f7b1d2af | Antony Chazapis | #
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16 | f7b1d2af | Antony Chazapis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | f7b1d2af | Antony Chazapis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | f7b1d2af | Antony Chazapis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | f7b1d2af | Antony Chazapis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | f7b1d2af | Antony Chazapis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | f7b1d2af | Antony Chazapis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | f7b1d2af | Antony Chazapis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | f7b1d2af | Antony Chazapis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | f7b1d2af | Antony Chazapis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | f7b1d2af | Antony Chazapis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | f7b1d2af | Antony Chazapis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | f7b1d2af | Antony Chazapis | # POSSIBILITY OF SUCH DAMAGE.
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28 | f7b1d2af | Antony Chazapis | #
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29 | f7b1d2af | Antony Chazapis | # The views and conclusions contained in the software and
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30 | f7b1d2af | Antony Chazapis | # documentation are those of the authors and should not be
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31 | f7b1d2af | Antony Chazapis | # interpreted as representing official policies, either expressed
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32 | f7b1d2af | Antony Chazapis | # or implied, of GRNET S.A.
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33 | f7b1d2af | Antony Chazapis | |
34 | f7b1d2af | Antony Chazapis | import logging |
35 | f7b1d2af | Antony Chazapis | |
36 | f7b1d2af | Antony Chazapis | from django.http import HttpResponse |
37 | f7b1d2af | Antony Chazapis | |
38 | 7bef5750 | Antony Chazapis | from pithos.api.faults import (Fault, BadRequest, ItemNotFound) |
39 | 8cb45c13 | Antony Chazapis | from pithos.api.util import (put_object_meta, update_manifest_meta, |
40 | 8cb45c13 | Antony Chazapis | validate_modification_preconditions, validate_matching_preconditions, |
41 | 8cb45c13 | Antony Chazapis | object_data_response, api_method) |
42 | f7b1d2af | Antony Chazapis | from pithos.backends import backend |
43 | f7b1d2af | Antony Chazapis | |
44 | f7b1d2af | Antony Chazapis | |
45 | f7b1d2af | Antony Chazapis | logger = logging.getLogger(__name__) |
46 | f7b1d2af | Antony Chazapis | |
47 | f7b1d2af | Antony Chazapis | |
48 | f7b1d2af | Antony Chazapis | def object_demux(request, v_account, v_container, v_object): |
49 | f7b1d2af | Antony Chazapis | if request.method == 'HEAD': |
50 | f7b1d2af | Antony Chazapis | return object_meta(request, v_account, v_container, v_object)
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51 | f7b1d2af | Antony Chazapis | elif request.method == 'GET': |
52 | f7b1d2af | Antony Chazapis | return object_read(request, v_account, v_container, v_object)
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53 | f7b1d2af | Antony Chazapis | else:
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54 | f7b1d2af | Antony Chazapis | return method_not_allowed(request)
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55 | f7b1d2af | Antony Chazapis | |
56 | f7b1d2af | Antony Chazapis | # TODO: Use a version of api_method that does not check for a token.
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57 | f7b1d2af | Antony Chazapis | |
58 | f7b1d2af | Antony Chazapis | @api_method('HEAD') |
59 | f7b1d2af | Antony Chazapis | def object_meta(request, v_account, v_container, v_object): |
60 | f7b1d2af | Antony Chazapis | # Normal Response Codes: 204
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61 | f7b1d2af | Antony Chazapis | # Error Response Codes: serviceUnavailable (503),
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62 | f7b1d2af | Antony Chazapis | # itemNotFound (404),
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63 | f7b1d2af | Antony Chazapis | # unauthorized (401),
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64 | f7b1d2af | Antony Chazapis | # badRequest (400)
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65 | f7b1d2af | Antony Chazapis | |
66 | f7b1d2af | Antony Chazapis | try:
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67 | 83dd59c5 | Antony Chazapis | meta = backend.get_object_meta(request.user, v_account, v_container, v_object) |
68 | 3436eeb0 | Antony Chazapis | permissions = backend.get_object_permissions(request.user, v_account, v_container, v_object) |
69 | f7b1d2af | Antony Chazapis | except NameError: |
70 | f7b1d2af | Antony Chazapis | raise ItemNotFound('Object does not exist') |
71 | f7b1d2af | Antony Chazapis | |
72 | 3436eeb0 | Antony Chazapis | if 'public' not in permissions: |
73 | f7b1d2af | Antony Chazapis | raise ItemNotFound('Object does not exist') |
74 | 8cb45c13 | Antony Chazapis | update_manifest_meta(request, v_account, meta) |
75 | f7b1d2af | Antony Chazapis | |
76 | f7b1d2af | Antony Chazapis | response = HttpResponse(status=204)
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77 | 7bef5750 | Antony Chazapis | put_object_meta(response, meta, True)
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78 | f7b1d2af | Antony Chazapis | return response
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79 | f7b1d2af | Antony Chazapis | |
80 | f7b1d2af | Antony Chazapis | @api_method('GET') |
81 | f7b1d2af | Antony Chazapis | def object_read(request, v_account, v_container, v_object): |
82 | f7b1d2af | Antony Chazapis | # Normal Response Codes: 200, 206
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83 | f7b1d2af | Antony Chazapis | # Error Response Codes: serviceUnavailable (503),
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84 | f7b1d2af | Antony Chazapis | # rangeNotSatisfiable (416),
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85 | f7b1d2af | Antony Chazapis | # preconditionFailed (412),
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86 | f7b1d2af | Antony Chazapis | # itemNotFound (404),
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87 | f7b1d2af | Antony Chazapis | # unauthorized (401),
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88 | f7b1d2af | Antony Chazapis | # badRequest (400),
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89 | f7b1d2af | Antony Chazapis | # notModified (304)
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90 | f7b1d2af | Antony Chazapis | |
91 | f7b1d2af | Antony Chazapis | try:
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92 | 83dd59c5 | Antony Chazapis | meta = backend.get_object_meta(request.user, v_account, v_container, v_object) |
93 | 3436eeb0 | Antony Chazapis | permissions = backend.get_object_permissions(request.user, v_account, v_container, v_object) |
94 | f7b1d2af | Antony Chazapis | except NameError: |
95 | f7b1d2af | Antony Chazapis | raise ItemNotFound('Object does not exist') |
96 | f7b1d2af | Antony Chazapis | |
97 | 3436eeb0 | Antony Chazapis | if 'public' not in permissions: |
98 | f7b1d2af | Antony Chazapis | raise ItemNotFound('Object does not exist') |
99 | 8cb45c13 | Antony Chazapis | update_manifest_meta(request, v_account, meta) |
100 | f7b1d2af | Antony Chazapis | |
101 | f7b1d2af | Antony Chazapis | # Evaluate conditions.
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102 | f7b1d2af | Antony Chazapis | validate_modification_preconditions(request, meta) |
103 | f7b1d2af | Antony Chazapis | try:
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104 | f7b1d2af | Antony Chazapis | validate_matching_preconditions(request, meta) |
105 | f7b1d2af | Antony Chazapis | except NotModified:
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106 | f7b1d2af | Antony Chazapis | response = HttpResponse(status=304)
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107 | f7b1d2af | Antony Chazapis | response['ETag'] = meta['hash'] |
108 | f7b1d2af | Antony Chazapis | return response
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109 | f7b1d2af | Antony Chazapis | |
110 | 8cb45c13 | Antony Chazapis | sizes = [] |
111 | 8cb45c13 | Antony Chazapis | hashmaps = [] |
112 | 8cb45c13 | Antony Chazapis | if 'X-Object-Manifest' in meta: |
113 | 8cb45c13 | Antony Chazapis | try:
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114 | 6d817842 | Antony Chazapis | src_container, src_name = split_container_object_string('/' + meta['X-Object-Manifest']) |
115 | 8cb45c13 | Antony Chazapis | objects = backend.list_objects(request.user, v_account, src_container, prefix=src_name, virtual=False)
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116 | 8cb45c13 | Antony Chazapis | except ValueError: |
117 | 8cb45c13 | Antony Chazapis | raise ItemNotFound('Object does not exist') |
118 | 8cb45c13 | Antony Chazapis | except NameError: |
119 | 8cb45c13 | Antony Chazapis | raise ItemNotFound('Object does not exist') |
120 | 8cb45c13 | Antony Chazapis | |
121 | 8cb45c13 | Antony Chazapis | try:
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122 | 8cb45c13 | Antony Chazapis | for x in objects: |
123 | 8cb45c13 | Antony Chazapis | s, h = backend.get_object_hashmap(request.user, v_account, src_container, x[0], x[1]) |
124 | 8cb45c13 | Antony Chazapis | sizes.append(s) |
125 | 8cb45c13 | Antony Chazapis | hashmaps.append(h) |
126 | 8cb45c13 | Antony Chazapis | except NameError: |
127 | 8cb45c13 | Antony Chazapis | raise ItemNotFound('Object does not exist') |
128 | 8cb45c13 | Antony Chazapis | else:
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129 | 8cb45c13 | Antony Chazapis | try:
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130 | 8cb45c13 | Antony Chazapis | s, h = backend.get_object_hashmap(request.user, v_account, v_container, v_object, version) |
131 | 8cb45c13 | Antony Chazapis | sizes.append(s) |
132 | 8cb45c13 | Antony Chazapis | hashmaps.append(h) |
133 | 8cb45c13 | Antony Chazapis | except NameError: |
134 | 8cb45c13 | Antony Chazapis | raise ItemNotFound('Object does not exist') |
135 | f7b1d2af | Antony Chazapis | |
136 | 8cb45c13 | Antony Chazapis | return object_data_response(request, sizes, hashmaps, meta, True) |
137 | f7b1d2af | Antony Chazapis | |
138 | f7b1d2af | Antony Chazapis | @api_method()
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139 | f7b1d2af | Antony Chazapis | def method_not_allowed(request): |
140 | f7b1d2af | Antony Chazapis | raise ItemNotFound('Object does not exist') |