Revision 432fc8c3 api/images.py
| b/api/images.py | ||
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# |
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from synnefo.api.common import method_not_allowed |
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from synnefo.api.util import isoformat, isoparse, get_user, get_image, get_request_dict, api_method
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from synnefo.api.util import *
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from synnefo.db.models import Image, ImageMetadata, VirtualMachine |
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from django.conf.urls.defaults import patterns |
| ... | ... | |
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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)?$', 'image_demux'), |
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(r'^/(\d+)/meta(?:.json|.xml)?$', 'metadata_demux'), |
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(r'^/(\d+)/meta/(.+?)(?:.json|.xml)?$', 'metadata_item_demux'), |
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) |
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def demux(request): |
| ... | ... | |
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else: |
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return method_not_allowed(request) |
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def metadata_demux(request, image_id): |
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if request.method == 'GET': |
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return list_metadata(request, image_id) |
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elif request.method == 'POST': |
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return update_metadata(request, image_id) |
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else: |
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return method_not_allowed(request) |
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def metadata_item_demux(request, image_id, key): |
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if request.method == 'GET': |
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return get_metadata_item(request, image_id, key) |
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elif request.method == 'PUT': |
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return create_metadata_item(request, image_id, key) |
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elif request.method == 'DELETE': |
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return delete_metadata_item(request, image_id, key) |
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else: |
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return method_not_allowed(request) |
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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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return d |
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def metadata_to_dict(image): |
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image_meta = image.imagemetadata_set.all() |
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return dict((meta.meta_key, meta.meta_value) for meta in image_meta) |
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@api_method('GET')
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def list_images(request, detail=False): |
| ... | ... | |
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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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server_id = d['serverRef'] |
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name = d['name'] |
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except (KeyError, ValueError): |
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raise BadRequest('Malformed request.')
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owner = get_user() |
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vm = get_vm(server_id) |
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image = Image.objects.create(name=name, size=0, owner=owner, sourcevm=vm) |
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image.save() |
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imagedict = image_to_dict(image) |
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if request.serialization == 'xml': |
| ... | ... | |
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raise Unauthorized() |
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image.delete() |
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return HttpResponse(status=204) |
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@api_method('GET')
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def list_metadata(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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# overLimit (413) |
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image = get_image(image_id) |
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metadata = metadata_to_dict(image) |
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return render_metadata(request, metadata, use_values=True, status=200) |
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@api_method('POST')
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def update_metadata(request, image_id): |
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# Normal Response Code: 201 |
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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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# buildInProgress (409), |
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# badMediaType(415), |
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# overLimit (413) |
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image = get_image(image_id) |
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req = get_request_dict(request) |
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try: |
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metadata = req['metadata'] |
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assert isinstance(metadata, dict) |
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except (KeyError, AssertionError): |
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raise BadRequest('Malformed request.')
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updated = {}
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for key, val in metadata.items(): |
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try: |
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meta = ImageMetadata.objects.get(meta_key=key, image=image) |
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meta.meta_value = val |
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meta.save() |
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updated[key] = val |
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except ImageMetadata.DoesNotExist: |
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pass # Ignore non-existent metadata |
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return render_metadata(request, metadata, status=201) |
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@api_method('GET')
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def get_metadata_item(request, image_id, key): |
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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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# itemNotFound (404), |
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# badRequest (400), |
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# overLimit (413) |
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meta = get_image_meta(image_id, key) |
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return render_meta(request, meta, status=200) |
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@api_method('PUT')
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def create_metadata_item(request, image_id, key): |
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# Normal Response Code: 201 |
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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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# badRequest (400), |
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# buildInProgress (409), |
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# badMediaType(415), |
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# overLimit (413) |
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image = get_image(image_id) |
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req = get_request_dict(request) |
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try: |
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metadict = req['meta'] |
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assert isinstance(metadict, dict) |
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assert len(metadict) == 1 |
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assert key in metadict |
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except (KeyError, AssertionError): |
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raise BadRequest('Malformed request.')
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meta, created = ImageMetadata.objects.get_or_create(meta_key=key, image=image) |
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meta.meta_value = metadict[key] |
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meta.save() |
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return render_meta(request, meta, status=201) |
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@api_method('DELETE')
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def delete_metadata_item(request, image_id, key): |
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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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# badRequest (400), |
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# buildInProgress (409), |
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# badMediaType(415), |
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# overLimit (413), |
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meta = get_image_meta(image_id, key) |
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meta.delete() |
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return HttpResponse(status=204) |
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