root / api / images.py @ 92c53da1
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#
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# Copyright (c) 2010 Greek Research and Technology Network
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#
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from synnefo.api.util import * |
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from synnefo.db.models import Image |
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from django.conf.urls.defaults import * |
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from django.http import HttpResponse |
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from django.template.loader import render_to_string |
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urlpatterns = patterns('synnefo.api.images',
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(r'^(?:/|.json|.xml)?$', 'demux'), |
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(r'^/detail(?:.json|.xml)?$', 'list_images', {'detail': True}), |
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(r'^/(\d+)(?:.json|.xml)?$', 'image_demux'), |
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) |
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def demux(request): |
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if request.method == 'GET': |
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return list_images(request)
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elif request.method == 'POST': |
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return create_image(request)
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else:
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fault = BadRequest() |
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return render_fault(request, fault)
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def image_demux(request, image_id): |
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if request.method == 'GET': |
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return get_image_details(request, image_id)
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elif request.method == 'DELETE': |
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return delete_image(request, image_id)
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else:
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fault = BadRequest() |
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return render_fault(request, fault)
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def image_to_dict(image, detail=True): |
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d = {'id': image.id, 'name': image.name} |
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if detail:
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d['updated'] = image.updated.isoformat()
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d['created'] = image.created.isoformat()
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d['status'] = image.state
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d['progress'] = 100 if image.state == 'ACTIVE' else 0 |
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d['description'] = image.description
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if image.sourcevm:
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d['serverRef'] = image.sourcevm.id
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return d
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@api_method('GET') |
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def list_images(request, detail=False): |
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# Normal Response Codes: 200, 203
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# badRequest (400),
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# overLimit (413)
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all_images = Image.objects.all() |
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images = [image_to_dict(image, detail) for image in all_images] |
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if request.type == 'xml': |
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mimetype = 'application/xml'
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data = render_to_string('list_images.xml', {'images': images, 'detail': detail}) |
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else:
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mimetype = 'application/json'
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data = json.dumps({'images': {'values': images}}) |
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return HttpResponse(data, mimetype=mimetype, status=200) |
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@api_method('POST') |
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def create_image(request): |
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# Normal Response Code: 202
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# badMediaType(415),
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# itemNotFound (404),
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# badRequest (400),
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# serverCapacityUnavailable (503),
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# buildInProgress (409),
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# resizeNotAllowed (403),
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# backupOrResizeInProgress (409),
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# overLimit (413)
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req = get_request_dict(request) |
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owner = get_user() |
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try:
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d = req['image']
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server_id = int(d['serverRef']) |
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vm = VirtualMachine.objects.get(id=server_id) |
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image = Image.objects.create(name=d['name'], size=0, owner=owner, sourcevm=vm) |
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image.save() |
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except KeyError: |
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raise BadRequest
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except ValueError: |
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raise BadRequest
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except VirtualMachine.DoesNotExist:
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raise ItemNotFound
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imagedict = image_to_dict(image) |
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if request.type == 'xml': |
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data = render_to_string('image.xml', {'image': imagedict}) |
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else:
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data = json.dumps({'image': imagedict})
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return HttpResponse(data, status=202) |
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@api_method('GET') |
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def get_image_details(request, image_id): |
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# Normal Response Codes: 200, 203
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# badRequest (400),
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# itemNotFound (404),
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# overLimit (413)
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try:
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image_id = int(image_id)
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imagedict = image_to_dict(Image.objects.get(id=image_id)) |
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except Image.DoesNotExist:
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raise ItemNotFound
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if request.type == 'xml': |
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data = render_to_string('image.xml', {'image': imagedict}) |
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else:
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data = json.dumps({'image': imagedict})
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return HttpResponse(data, status=200) |
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@api_method('DELETE') |
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def delete_image(request, image_id): |
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# Normal Response Code: 204
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# itemNotFound (404),
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# overLimit (413)
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try:
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image_id = int(image_id)
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image = Image.objects.get(id=image_id) |
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except Image.DoesNotExist:
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raise ItemNotFound
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if image.owner != get_user():
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raise Unauthorized()
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image.delete() |
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return HttpResponse(status=204) |