root / api / images.py @ 838c404d
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1 | c36934a7 | Giorgos Verigakis | #
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2 | c36934a7 | Giorgos Verigakis | # Copyright (c) 2010 Greek Research and Technology Network
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3 | c36934a7 | Giorgos Verigakis | #
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4 | c36934a7 | Giorgos Verigakis | |
5 | d8e50a39 | Giorgos Verigakis | from synnefo.api.common import method_not_allowed |
6 | 432fc8c3 | Giorgos Verigakis | from synnefo.api.util import * |
7 | d8e50a39 | Giorgos Verigakis | from synnefo.db.models import Image, ImageMetadata, VirtualMachine |
8 | c36934a7 | Giorgos Verigakis | |
9 | d8e50a39 | Giorgos Verigakis | from django.conf.urls.defaults import patterns |
10 | c36934a7 | Giorgos Verigakis | from django.http import HttpResponse |
11 | c36934a7 | Giorgos Verigakis | from django.template.loader import render_to_string |
12 | 29a59bc1 | Giorgos Verigakis | from django.utils import simplejson as json |
13 | c36934a7 | Giorgos Verigakis | |
14 | c36934a7 | Giorgos Verigakis | |
15 | c36934a7 | Giorgos Verigakis | urlpatterns = patterns('synnefo.api.images',
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16 | c36934a7 | Giorgos Verigakis | (r'^(?:/|.json|.xml)?$', 'demux'), |
17 | c36934a7 | Giorgos Verigakis | (r'^/detail(?:.json|.xml)?$', 'list_images', {'detail': True}), |
18 | c36934a7 | Giorgos Verigakis | (r'^/(\d+)(?:.json|.xml)?$', 'image_demux'), |
19 | 432fc8c3 | Giorgos Verigakis | (r'^/(\d+)/meta(?:.json|.xml)?$', 'metadata_demux'), |
20 | 432fc8c3 | Giorgos Verigakis | (r'^/(\d+)/meta/(.+?)(?:.json|.xml)?$', 'metadata_item_demux'), |
21 | c36934a7 | Giorgos Verigakis | ) |
22 | c36934a7 | Giorgos Verigakis | |
23 | c36934a7 | Giorgos Verigakis | def demux(request): |
24 | c36934a7 | Giorgos Verigakis | if request.method == 'GET': |
25 | c36934a7 | Giorgos Verigakis | return list_images(request)
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26 | c36934a7 | Giorgos Verigakis | elif request.method == 'POST': |
27 | c36934a7 | Giorgos Verigakis | return create_image(request)
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28 | c36934a7 | Giorgos Verigakis | else:
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29 | d8e50a39 | Giorgos Verigakis | return method_not_allowed(request)
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30 | c36934a7 | Giorgos Verigakis | |
31 | c36934a7 | Giorgos Verigakis | def image_demux(request, image_id): |
32 | c36934a7 | Giorgos Verigakis | if request.method == 'GET': |
33 | c36934a7 | Giorgos Verigakis | return get_image_details(request, image_id)
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34 | c36934a7 | Giorgos Verigakis | elif request.method == 'DELETE': |
35 | c36934a7 | Giorgos Verigakis | return delete_image(request, image_id)
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36 | c36934a7 | Giorgos Verigakis | else:
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37 | d8e50a39 | Giorgos Verigakis | return method_not_allowed(request)
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38 | c36934a7 | Giorgos Verigakis | |
39 | 432fc8c3 | Giorgos Verigakis | def metadata_demux(request, image_id): |
40 | 432fc8c3 | Giorgos Verigakis | if request.method == 'GET': |
41 | 432fc8c3 | Giorgos Verigakis | return list_metadata(request, image_id)
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42 | 432fc8c3 | Giorgos Verigakis | elif request.method == 'POST': |
43 | 432fc8c3 | Giorgos Verigakis | return update_metadata(request, image_id)
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44 | 432fc8c3 | Giorgos Verigakis | else:
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45 | 432fc8c3 | Giorgos Verigakis | return method_not_allowed(request)
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46 | 432fc8c3 | Giorgos Verigakis | |
47 | 432fc8c3 | Giorgos Verigakis | def metadata_item_demux(request, image_id, key): |
48 | 432fc8c3 | Giorgos Verigakis | if request.method == 'GET': |
49 | 432fc8c3 | Giorgos Verigakis | return get_metadata_item(request, image_id, key)
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50 | 432fc8c3 | Giorgos Verigakis | elif request.method == 'PUT': |
51 | 432fc8c3 | Giorgos Verigakis | return create_metadata_item(request, image_id, key)
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52 | 432fc8c3 | Giorgos Verigakis | elif request.method == 'DELETE': |
53 | 432fc8c3 | Giorgos Verigakis | return delete_metadata_item(request, image_id, key)
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54 | 432fc8c3 | Giorgos Verigakis | else:
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55 | 432fc8c3 | Giorgos Verigakis | return method_not_allowed(request)
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56 | 432fc8c3 | Giorgos Verigakis | |
57 | c36934a7 | Giorgos Verigakis | |
58 | c36934a7 | Giorgos Verigakis | def image_to_dict(image, detail=True): |
59 | c36934a7 | Giorgos Verigakis | d = {'id': image.id, 'name': image.name} |
60 | c36934a7 | Giorgos Verigakis | if detail:
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61 | d8e50a39 | Giorgos Verigakis | d['updated'] = isoformat(image.updated)
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62 | d8e50a39 | Giorgos Verigakis | d['created'] = isoformat(image.created)
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63 | c36934a7 | Giorgos Verigakis | d['status'] = image.state
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64 | c36934a7 | Giorgos Verigakis | d['progress'] = 100 if image.state == 'ACTIVE' else 0 |
65 | c36934a7 | Giorgos Verigakis | d['description'] = image.description
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66 | c36934a7 | Giorgos Verigakis | if image.sourcevm:
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67 | c36934a7 | Giorgos Verigakis | d['serverRef'] = image.sourcevm.id
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68 | a62a4d20 | Giorgos Verigakis | |
69 | a62a4d20 | Giorgos Verigakis | metadata = {} |
70 | a62a4d20 | Giorgos Verigakis | for meta in ImageMetadata.objects.filter(image=image): |
71 | a62a4d20 | Giorgos Verigakis | metadata[meta.meta_key] = meta.meta_value |
72 | a62a4d20 | Giorgos Verigakis | |
73 | a62a4d20 | Giorgos Verigakis | if metadata:
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74 | a62a4d20 | Giorgos Verigakis | d['metadata'] = {'values': metadata} |
75 | a62a4d20 | Giorgos Verigakis | |
76 | c36934a7 | Giorgos Verigakis | return d
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77 | c36934a7 | Giorgos Verigakis | |
78 | 432fc8c3 | Giorgos Verigakis | def metadata_to_dict(image): |
79 | 432fc8c3 | Giorgos Verigakis | image_meta = image.imagemetadata_set.all() |
80 | 432fc8c3 | Giorgos Verigakis | return dict((meta.meta_key, meta.meta_value) for meta in image_meta) |
81 | 432fc8c3 | Giorgos Verigakis | |
82 | c36934a7 | Giorgos Verigakis | |
83 | c36934a7 | Giorgos Verigakis | @api_method('GET') |
84 | c36934a7 | Giorgos Verigakis | def list_images(request, detail=False): |
85 | c36934a7 | Giorgos Verigakis | # Normal Response Codes: 200, 203
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86 | c36934a7 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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87 | c36934a7 | Giorgos Verigakis | # serviceUnavailable (503),
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88 | c36934a7 | Giorgos Verigakis | # unauthorized (401),
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89 | c36934a7 | Giorgos Verigakis | # badRequest (400),
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90 | c36934a7 | Giorgos Verigakis | # overLimit (413)
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91 | c36934a7 | Giorgos Verigakis | |
92 | d8e50a39 | Giorgos Verigakis | since = isoparse(request.GET.get('changes-since'))
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93 | c36934a7 | Giorgos Verigakis | |
94 | d8e50a39 | Giorgos Verigakis | if since:
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95 | d8e50a39 | Giorgos Verigakis | avail_images = Image.objects.filter(updated__gt=since) |
96 | d8e50a39 | Giorgos Verigakis | if not avail_images: |
97 | d8e50a39 | Giorgos Verigakis | return HttpResponse(status=304) |
98 | d8e50a39 | Giorgos Verigakis | else:
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99 | d8e50a39 | Giorgos Verigakis | avail_images = Image.objects.all() |
100 | d8e50a39 | Giorgos Verigakis | |
101 | d8e50a39 | Giorgos Verigakis | images = [image_to_dict(image, detail) for image in avail_images] |
102 | d8e50a39 | Giorgos Verigakis | |
103 | d8e50a39 | Giorgos Verigakis | if request.serialization == 'xml': |
104 | c36934a7 | Giorgos Verigakis | data = render_to_string('list_images.xml', {'images': images, 'detail': detail}) |
105 | c36934a7 | Giorgos Verigakis | else:
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106 | c36934a7 | Giorgos Verigakis | data = json.dumps({'images': {'values': images}}) |
107 | c36934a7 | Giorgos Verigakis | |
108 | d8e50a39 | Giorgos Verigakis | return HttpResponse(data, status=200) |
109 | c36934a7 | Giorgos Verigakis | |
110 | c36934a7 | Giorgos Verigakis | @api_method('POST') |
111 | c36934a7 | Giorgos Verigakis | def create_image(request): |
112 | c36934a7 | Giorgos Verigakis | # Normal Response Code: 202
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113 | c36934a7 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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114 | c36934a7 | Giorgos Verigakis | # serviceUnavailable (503),
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115 | c36934a7 | Giorgos Verigakis | # unauthorized (401),
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116 | c36934a7 | Giorgos Verigakis | # badMediaType(415),
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117 | c36934a7 | Giorgos Verigakis | # itemNotFound (404),
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118 | c36934a7 | Giorgos Verigakis | # badRequest (400),
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119 | c36934a7 | Giorgos Verigakis | # serverCapacityUnavailable (503),
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120 | c36934a7 | Giorgos Verigakis | # buildInProgress (409),
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121 | c36934a7 | Giorgos Verigakis | # resizeNotAllowed (403),
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122 | c36934a7 | Giorgos Verigakis | # backupOrResizeInProgress (409),
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123 | c36934a7 | Giorgos Verigakis | # overLimit (413)
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124 | c36934a7 | Giorgos Verigakis | |
125 | c36934a7 | Giorgos Verigakis | req = get_request_dict(request) |
126 | c36934a7 | Giorgos Verigakis | |
127 | c36934a7 | Giorgos Verigakis | try:
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128 | c36934a7 | Giorgos Verigakis | d = req['image']
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129 | 432fc8c3 | Giorgos Verigakis | server_id = d['serverRef']
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130 | 432fc8c3 | Giorgos Verigakis | name = d['name']
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131 | 432fc8c3 | Giorgos Verigakis | except (KeyError, ValueError): |
132 | 432fc8c3 | Giorgos Verigakis | raise BadRequest('Malformed request.') |
133 | 432fc8c3 | Giorgos Verigakis | |
134 | 432fc8c3 | Giorgos Verigakis | owner = get_user() |
135 | 432fc8c3 | Giorgos Verigakis | vm = get_vm(server_id) |
136 | 838c404d | Giorgos Verigakis | image = Image.objects.create(name=name, owner=owner, sourcevm=vm) |
137 | c36934a7 | Giorgos Verigakis | |
138 | c36934a7 | Giorgos Verigakis | imagedict = image_to_dict(image) |
139 | d8e50a39 | Giorgos Verigakis | if request.serialization == 'xml': |
140 | c36934a7 | Giorgos Verigakis | data = render_to_string('image.xml', {'image': imagedict}) |
141 | c36934a7 | Giorgos Verigakis | else:
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142 | c36934a7 | Giorgos Verigakis | data = json.dumps({'image': imagedict})
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143 | c36934a7 | Giorgos Verigakis | |
144 | c36934a7 | Giorgos Verigakis | return HttpResponse(data, status=202) |
145 | c36934a7 | Giorgos Verigakis | |
146 | c36934a7 | Giorgos Verigakis | @api_method('GET') |
147 | c36934a7 | Giorgos Verigakis | def get_image_details(request, image_id): |
148 | c36934a7 | Giorgos Verigakis | # Normal Response Codes: 200, 203
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149 | c36934a7 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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150 | c36934a7 | Giorgos Verigakis | # serviceUnavailable (503),
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151 | c36934a7 | Giorgos Verigakis | # unauthorized (401),
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152 | c36934a7 | Giorgos Verigakis | # badRequest (400),
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153 | c36934a7 | Giorgos Verigakis | # itemNotFound (404),
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154 | c36934a7 | Giorgos Verigakis | # overLimit (413)
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155 | c36934a7 | Giorgos Verigakis | |
156 | d8e50a39 | Giorgos Verigakis | image = get_image(image_id) |
157 | d8e50a39 | Giorgos Verigakis | imagedict = image_to_dict(image) |
158 | c36934a7 | Giorgos Verigakis | |
159 | d8e50a39 | Giorgos Verigakis | if request.serialization == 'xml': |
160 | c36934a7 | Giorgos Verigakis | data = render_to_string('image.xml', {'image': imagedict}) |
161 | c36934a7 | Giorgos Verigakis | else:
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162 | c36934a7 | Giorgos Verigakis | data = json.dumps({'image': imagedict})
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163 | c36934a7 | Giorgos Verigakis | |
164 | c36934a7 | Giorgos Verigakis | return HttpResponse(data, status=200) |
165 | c36934a7 | Giorgos Verigakis | |
166 | c36934a7 | Giorgos Verigakis | @api_method('DELETE') |
167 | c36934a7 | Giorgos Verigakis | def delete_image(request, image_id): |
168 | c36934a7 | Giorgos Verigakis | # Normal Response Code: 204
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169 | c36934a7 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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170 | c36934a7 | Giorgos Verigakis | # serviceUnavailable (503),
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171 | c36934a7 | Giorgos Verigakis | # unauthorized (401),
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172 | c36934a7 | Giorgos Verigakis | # itemNotFound (404),
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173 | c36934a7 | Giorgos Verigakis | # overLimit (413)
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174 | c36934a7 | Giorgos Verigakis | |
175 | d8e50a39 | Giorgos Verigakis | image = get_image(image_id) |
176 | c36934a7 | Giorgos Verigakis | if image.owner != get_user():
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177 | c36934a7 | Giorgos Verigakis | raise Unauthorized()
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178 | c36934a7 | Giorgos Verigakis | image.delete() |
179 | c36934a7 | Giorgos Verigakis | return HttpResponse(status=204) |
180 | 432fc8c3 | Giorgos Verigakis | |
181 | 432fc8c3 | Giorgos Verigakis | @api_method('GET') |
182 | 432fc8c3 | Giorgos Verigakis | def list_metadata(request, image_id): |
183 | 432fc8c3 | Giorgos Verigakis | # Normal Response Codes: 200, 203
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184 | 432fc8c3 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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185 | 432fc8c3 | Giorgos Verigakis | # serviceUnavailable (503),
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186 | 432fc8c3 | Giorgos Verigakis | # unauthorized (401),
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187 | 432fc8c3 | Giorgos Verigakis | # badRequest (400),
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188 | 432fc8c3 | Giorgos Verigakis | # overLimit (413)
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189 | 432fc8c3 | Giorgos Verigakis | |
190 | 432fc8c3 | Giorgos Verigakis | image = get_image(image_id) |
191 | 432fc8c3 | Giorgos Verigakis | metadata = metadata_to_dict(image) |
192 | 432fc8c3 | Giorgos Verigakis | return render_metadata(request, metadata, use_values=True, status=200) |
193 | 432fc8c3 | Giorgos Verigakis | |
194 | 432fc8c3 | Giorgos Verigakis | @api_method('POST') |
195 | 432fc8c3 | Giorgos Verigakis | def update_metadata(request, image_id): |
196 | 432fc8c3 | Giorgos Verigakis | # Normal Response Code: 201
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197 | 432fc8c3 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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198 | 432fc8c3 | Giorgos Verigakis | # serviceUnavailable (503),
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199 | 432fc8c3 | Giorgos Verigakis | # unauthorized (401),
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200 | 432fc8c3 | Giorgos Verigakis | # badRequest (400),
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201 | 432fc8c3 | Giorgos Verigakis | # buildInProgress (409),
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202 | 432fc8c3 | Giorgos Verigakis | # badMediaType(415),
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203 | 432fc8c3 | Giorgos Verigakis | # overLimit (413)
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204 | 432fc8c3 | Giorgos Verigakis | |
205 | 432fc8c3 | Giorgos Verigakis | image = get_image(image_id) |
206 | 432fc8c3 | Giorgos Verigakis | req = get_request_dict(request) |
207 | 432fc8c3 | Giorgos Verigakis | try:
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208 | 432fc8c3 | Giorgos Verigakis | metadata = req['metadata']
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209 | 432fc8c3 | Giorgos Verigakis | assert isinstance(metadata, dict) |
210 | 432fc8c3 | Giorgos Verigakis | except (KeyError, AssertionError): |
211 | 432fc8c3 | Giorgos Verigakis | raise BadRequest('Malformed request.') |
212 | 432fc8c3 | Giorgos Verigakis | |
213 | 432fc8c3 | Giorgos Verigakis | updated = {} |
214 | 432fc8c3 | Giorgos Verigakis | |
215 | 432fc8c3 | Giorgos Verigakis | for key, val in metadata.items(): |
216 | 432fc8c3 | Giorgos Verigakis | try:
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217 | 432fc8c3 | Giorgos Verigakis | meta = ImageMetadata.objects.get(meta_key=key, image=image) |
218 | 432fc8c3 | Giorgos Verigakis | meta.meta_value = val |
219 | 432fc8c3 | Giorgos Verigakis | meta.save() |
220 | 432fc8c3 | Giorgos Verigakis | updated[key] = val |
221 | 432fc8c3 | Giorgos Verigakis | except ImageMetadata.DoesNotExist:
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222 | 432fc8c3 | Giorgos Verigakis | pass # Ignore non-existent metadata |
223 | 432fc8c3 | Giorgos Verigakis | |
224 | 432fc8c3 | Giorgos Verigakis | return render_metadata(request, metadata, status=201) |
225 | 432fc8c3 | Giorgos Verigakis | |
226 | 432fc8c3 | Giorgos Verigakis | @api_method('GET') |
227 | 432fc8c3 | Giorgos Verigakis | def get_metadata_item(request, image_id, key): |
228 | 432fc8c3 | Giorgos Verigakis | # Normal Response Codes: 200, 203
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229 | 432fc8c3 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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230 | 432fc8c3 | Giorgos Verigakis | # serviceUnavailable (503),
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231 | 432fc8c3 | Giorgos Verigakis | # unauthorized (401),
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232 | 432fc8c3 | Giorgos Verigakis | # itemNotFound (404),
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233 | 432fc8c3 | Giorgos Verigakis | # badRequest (400),
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234 | 432fc8c3 | Giorgos Verigakis | # overLimit (413)
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235 | 432fc8c3 | Giorgos Verigakis | |
236 | 432fc8c3 | Giorgos Verigakis | meta = get_image_meta(image_id, key) |
237 | 432fc8c3 | Giorgos Verigakis | return render_meta(request, meta, status=200) |
238 | 432fc8c3 | Giorgos Verigakis | |
239 | 432fc8c3 | Giorgos Verigakis | @api_method('PUT') |
240 | 432fc8c3 | Giorgos Verigakis | def create_metadata_item(request, image_id, key): |
241 | 432fc8c3 | Giorgos Verigakis | # Normal Response Code: 201
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242 | 432fc8c3 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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243 | 432fc8c3 | Giorgos Verigakis | # serviceUnavailable (503),
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244 | 432fc8c3 | Giorgos Verigakis | # unauthorized (401),
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245 | 432fc8c3 | Giorgos Verigakis | # itemNotFound (404),
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246 | 432fc8c3 | Giorgos Verigakis | # badRequest (400),
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247 | 432fc8c3 | Giorgos Verigakis | # buildInProgress (409),
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248 | 432fc8c3 | Giorgos Verigakis | # badMediaType(415),
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249 | 432fc8c3 | Giorgos Verigakis | # overLimit (413)
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250 | 432fc8c3 | Giorgos Verigakis | |
251 | 432fc8c3 | Giorgos Verigakis | image = get_image(image_id) |
252 | 432fc8c3 | Giorgos Verigakis | req = get_request_dict(request) |
253 | 432fc8c3 | Giorgos Verigakis | try:
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254 | 432fc8c3 | Giorgos Verigakis | metadict = req['meta']
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255 | 432fc8c3 | Giorgos Verigakis | assert isinstance(metadict, dict) |
256 | 432fc8c3 | Giorgos Verigakis | assert len(metadict) == 1 |
257 | 432fc8c3 | Giorgos Verigakis | assert key in metadict |
258 | 432fc8c3 | Giorgos Verigakis | except (KeyError, AssertionError): |
259 | 432fc8c3 | Giorgos Verigakis | raise BadRequest('Malformed request.') |
260 | 432fc8c3 | Giorgos Verigakis | |
261 | 432fc8c3 | Giorgos Verigakis | meta, created = ImageMetadata.objects.get_or_create(meta_key=key, image=image) |
262 | 432fc8c3 | Giorgos Verigakis | meta.meta_value = metadict[key] |
263 | 432fc8c3 | Giorgos Verigakis | meta.save() |
264 | 432fc8c3 | Giorgos Verigakis | return render_meta(request, meta, status=201) |
265 | 432fc8c3 | Giorgos Verigakis | |
266 | 432fc8c3 | Giorgos Verigakis | @api_method('DELETE') |
267 | 432fc8c3 | Giorgos Verigakis | def delete_metadata_item(request, image_id, key): |
268 | 432fc8c3 | Giorgos Verigakis | # Normal Response Code: 204
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269 | 432fc8c3 | Giorgos Verigakis | # Error Response Codes: computeFault (400, 500),
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270 | 432fc8c3 | Giorgos Verigakis | # serviceUnavailable (503),
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271 | 432fc8c3 | Giorgos Verigakis | # unauthorized (401),
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272 | 432fc8c3 | Giorgos Verigakis | # itemNotFound (404),
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273 | 432fc8c3 | Giorgos Verigakis | # badRequest (400),
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274 | 432fc8c3 | Giorgos Verigakis | # buildInProgress (409),
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275 | 432fc8c3 | Giorgos Verigakis | # badMediaType(415),
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276 | 432fc8c3 | Giorgos Verigakis | # overLimit (413),
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277 | 432fc8c3 | Giorgos Verigakis | |
278 | 432fc8c3 | Giorgos Verigakis | meta = get_image_meta(image_id, key) |
279 | 432fc8c3 | Giorgos Verigakis | meta.delete() |
280 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(status=204) |