root / pithos / api / functions.py @ 1495b972
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# Copyright 2011 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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import os |
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import logging |
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import hashlib |
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from django.conf import settings |
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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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from django.utils import simplejson as json |
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from django.utils.http import parse_etags |
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from pithos.api.faults import (Fault, NotModified, BadRequest, Unauthorized, ItemNotFound, Conflict, |
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LengthRequired, PreconditionFailed, RangeNotSatisfiable, UnprocessableEntity) |
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from pithos.api.util import (format_header_key, printable_header_dict, get_account_headers, |
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put_account_headers, get_container_headers, put_container_headers, get_object_headers, put_object_headers, |
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update_manifest_meta, update_sharing_meta, update_public_meta, validate_modification_preconditions, |
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validate_matching_preconditions, split_container_object_string, copy_or_move_object, |
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get_int_parameter, get_content_length, get_content_range, raw_input_socket, |
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socket_read_iterator, object_data_response, put_object_block, hashmap_hash, api_method) |
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from pithos.backends import backend |
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from pithos.backends.base import NotAllowedError |
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logger = logging.getLogger(__name__) |
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def top_demux(request): |
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if request.method == 'GET': |
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return authenticate(request)
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else:
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return method_not_allowed(request)
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def account_demux(request, v_account): |
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if request.method == 'HEAD': |
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return account_meta(request, v_account)
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elif request.method == 'POST': |
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return account_update(request, v_account)
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elif request.method == 'GET': |
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return container_list(request, v_account)
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else:
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return method_not_allowed(request)
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def container_demux(request, v_account, v_container): |
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if request.method == 'HEAD': |
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return container_meta(request, v_account, v_container)
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elif request.method == 'PUT': |
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return container_create(request, v_account, v_container)
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elif request.method == 'POST': |
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return container_update(request, v_account, v_container)
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elif request.method == 'DELETE': |
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return container_delete(request, v_account, v_container)
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elif request.method == 'GET': |
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return object_list(request, v_account, v_container)
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else:
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return method_not_allowed(request)
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def object_demux(request, v_account, v_container, v_object): |
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if request.method == 'HEAD': |
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return object_meta(request, v_account, v_container, v_object)
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elif request.method == 'GET': |
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return object_read(request, v_account, v_container, v_object)
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elif request.method == 'PUT': |
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return object_write(request, v_account, v_container, v_object)
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elif request.method == 'COPY': |
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return object_copy(request, v_account, v_container, v_object)
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elif request.method == 'MOVE': |
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return object_move(request, v_account, v_container, v_object)
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elif request.method == 'POST': |
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return object_update(request, v_account, v_container, v_object)
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elif request.method == 'DELETE': |
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return object_delete(request, v_account, v_container, v_object)
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else:
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return method_not_allowed(request)
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@api_method('GET') |
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def authenticate(request): |
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# Normal Response Codes: 204
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# Error Response Codes: serviceUnavailable (503),
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# unauthorized (401),
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# badRequest (400)
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x_auth_user = request.META.get('HTTP_X_AUTH_USER')
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x_auth_key = request.META.get('HTTP_X_AUTH_KEY')
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if not x_auth_user or not x_auth_key: |
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raise BadRequest('Missing X-Auth-User or X-Auth-Key header') |
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response = HttpResponse(status=204)
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inv_auth_tokens = dict((v, k) for k, v in settings.AUTH_TOKENS.items()) |
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response['X-Auth-Token'] = inv_auth_tokens.get(x_auth_user, '0000') |
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response['X-Storage-Url'] = os.path.join(request.build_absolute_uri(), 'demo') |
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return response
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@api_method('HEAD') |
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def account_meta(request, v_account): |
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# Normal Response Codes: 204
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# Error Response Codes: serviceUnavailable (503),
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# unauthorized (401),
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# badRequest (400)
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until = get_int_parameter(request.GET.get('until'))
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try:
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meta = backend.get_account_meta(request.user, v_account, until) |
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groups = backend.get_account_groups(request.user, v_account) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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response = HttpResponse(status=204)
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put_account_headers(response, meta, groups) |
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return response
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@api_method('POST') |
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def account_update(request, v_account): |
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# Normal Response Codes: 202
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# Error Response Codes: serviceUnavailable (503),
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# unauthorized (401),
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# badRequest (400)
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meta, groups = get_account_headers(request) |
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replace = True
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if 'update' in request.GET: |
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replace = False
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if groups:
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try:
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backend.update_account_groups(request.user, v_account, groups, replace) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except ValueError: |
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raise BadRequest('Invalid groups header') |
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try:
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backend.update_account_meta(request.user, v_account, meta, replace) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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return HttpResponse(status=202) |
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@api_method('GET', format_allowed=True) |
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def container_list(request, v_account): |
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# Normal Response Codes: 200, 204
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# Error Response Codes: serviceUnavailable (503),
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# itemNotFound (404),
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# unauthorized (401),
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# badRequest (400)
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until = get_int_parameter(request.GET.get('until'))
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try:
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meta = backend.get_account_meta(request.user, v_account, until) |
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groups = backend.get_account_groups(request.user, v_account) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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validate_modification_preconditions(request, meta) |
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response = HttpResponse() |
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put_account_headers(response, meta, groups) |
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marker = request.GET.get('marker')
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limit = request.GET.get('limit')
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if limit:
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try:
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limit = int(limit)
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if limit <= 0: |
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raise ValueError |
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except ValueError: |
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limit = 10000
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try:
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containers = backend.list_containers(request.user, v_account, marker, limit, until) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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containers = [] |
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if request.serialization == 'text': |
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if len(containers) == 0: |
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# The cloudfiles python bindings expect 200 if json/xml.
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response.status_code = 204
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return response
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response.status_code = 200
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response.content = '\n'.join([x[0] for x in containers]) + '\n' |
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return response
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container_meta = [] |
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for x in containers: |
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if x[1] is not None: |
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try:
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meta = backend.get_container_meta(request.user, v_account, x[0], until)
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policy = backend.get_container_policy(request.user, v_account, x[0])
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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pass
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else:
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for k, v in policy.iteritems(): |
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meta['X-Container-Policy-' + k] = v
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container_meta.append(printable_header_dict(meta)) |
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if request.serialization == 'xml': |
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data = render_to_string('containers.xml', {'account': v_account, 'containers': container_meta}) |
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elif request.serialization == 'json': |
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data = json.dumps(container_meta) |
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response.status_code = 200
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response.content = data |
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return response
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@api_method('HEAD') |
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def container_meta(request, v_account, v_container): |
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# Normal Response Codes: 204
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# Error Response Codes: serviceUnavailable (503),
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# itemNotFound (404),
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# unauthorized (401),
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# badRequest (400)
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until = get_int_parameter(request.GET.get('until'))
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try:
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meta = backend.get_container_meta(request.user, v_account, v_container, until) |
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meta['object_meta'] = backend.list_object_meta(request.user, v_account, v_container, until)
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policy = backend.get_container_policy(request.user, v_account, v_container) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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raise ItemNotFound('Container does not exist') |
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response = HttpResponse(status=204)
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put_container_headers(response, meta, policy) |
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return response
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@api_method('PUT') |
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def container_create(request, v_account, v_container): |
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# Normal Response Codes: 201, 202
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# Error Response Codes: serviceUnavailable (503),
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# itemNotFound (404),
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# unauthorized (401),
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# badRequest (400)
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meta, policy = get_container_headers(request) |
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try:
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backend.put_container(request.user, v_account, v_container, policy) |
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ret = 201
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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ret = 202
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if len(meta) > 0: |
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try:
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backend.update_container_meta(request.user, v_account, v_container, meta, replace=True)
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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raise ItemNotFound('Container does not exist') |
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return HttpResponse(status=ret)
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@api_method('POST') |
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def container_update(request, v_account, v_container): |
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# Normal Response Codes: 202
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# Error Response Codes: serviceUnavailable (503),
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# itemNotFound (404),
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# unauthorized (401),
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# badRequest (400)
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meta, policy = get_container_headers(request) |
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replace = True
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if 'update' in request.GET: |
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replace = False
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if policy:
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try:
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backend.update_container_policy(request.user, v_account, v_container, policy, replace) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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raise ItemNotFound('Container does not exist') |
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except ValueError: |
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raise BadRequest('Invalid policy header') |
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try:
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backend.update_container_meta(request.user, v_account, v_container, meta, replace) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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raise ItemNotFound('Container does not exist') |
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return HttpResponse(status=202) |
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@api_method('DELETE') |
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def container_delete(request, v_account, v_container): |
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# Normal Response Codes: 204
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# Error Response Codes: serviceUnavailable (503),
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# conflict (409),
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# itemNotFound (404),
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# unauthorized (401),
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# badRequest (400)
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try:
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backend.delete_container(request.user, v_account, v_container) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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raise ItemNotFound('Container does not exist') |
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except IndexError: |
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raise Conflict('Container is not empty') |
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return HttpResponse(status=204) |
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@api_method('GET', format_allowed=True) |
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def object_list(request, v_account, v_container): |
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# Normal Response Codes: 200, 204
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# Error Response Codes: serviceUnavailable (503),
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# itemNotFound (404),
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# unauthorized (401),
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# badRequest (400)
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until = get_int_parameter(request.GET.get('until'))
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try:
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meta = backend.get_container_meta(request.user, v_account, v_container, until) |
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meta['object_meta'] = backend.list_object_meta(request.user, v_account, v_container, until)
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policy = backend.get_container_policy(request.user, v_account, v_container) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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raise ItemNotFound('Container does not exist') |
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validate_modification_preconditions(request, meta) |
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response = HttpResponse() |
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put_container_headers(response, meta, policy) |
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path = request.GET.get('path')
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prefix = request.GET.get('prefix')
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delimiter = request.GET.get('delimiter')
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# Path overrides prefix and delimiter.
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virtual = True
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if path:
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prefix = path |
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delimiter = '/'
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virtual = False
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# Naming policy.
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if prefix and delimiter: |
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prefix = prefix + delimiter |
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if not prefix: |
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prefix = ''
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prefix = prefix.lstrip('/')
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marker = request.GET.get('marker')
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limit = request.GET.get('limit')
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if limit:
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try:
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limit = int(limit)
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if limit <= 0: |
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raise ValueError |
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except ValueError: |
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limit = 10000
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keys = request.GET.get('meta')
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if keys:
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keys = keys.split(',')
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keys = [format_header_key('X-Object-Meta-' + x.strip()) for x in keys if x.strip() != ''] |
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else:
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keys = [] |
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|
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try:
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objects = backend.list_objects(request.user, v_account, v_container, prefix, delimiter, marker, limit, virtual, keys, until) |
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except NotAllowedError:
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raise Unauthorized('Access denied') |
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except NameError: |
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raise ItemNotFound('Container does not exist') |
396 |
|
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if request.serialization == 'text': |
398 |
if len(objects) == 0: |
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# The cloudfiles python bindings expect 200 if json/xml.
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response.status_code = 204
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return response
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response.status_code = 200
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response.content = '\n'.join([x[0] for x in objects]) + '\n' |
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return response
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|
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object_meta = [] |
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for x in objects: |
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if x[1] is None: |
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# Virtual objects/directories.
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object_meta.append({'subdir': x[0]}) |
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else:
|
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try:
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meta = backend.get_object_meta(request.user, v_account, v_container, x[0], x[1]) |
414 |
if until is None: |
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permissions = backend.get_object_permissions(request.user, v_account, v_container, x[0])
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public = backend.get_object_public(request.user, v_account, v_container, x[0])
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else:
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permissions = None
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public = None
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except NotAllowedError:
|
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raise Unauthorized('Access denied') |
422 |
except NameError: |
423 |
pass
|
424 |
else:
|
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update_sharing_meta(permissions, v_account, v_container, x[0], meta)
|
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update_public_meta(public, meta) |
427 |
object_meta.append(printable_header_dict(meta)) |
428 |
if request.serialization == 'xml': |
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data = render_to_string('objects.xml', {'container': v_container, 'objects': object_meta}) |
430 |
elif request.serialization == 'json': |
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data = json.dumps(object_meta) |
432 |
response.status_code = 200
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response.content = data |
434 |
return response
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|
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@api_method('HEAD') |
437 |
def object_meta(request, v_account, v_container, v_object): |
438 |
# Normal Response Codes: 204
|
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# Error Response Codes: serviceUnavailable (503),
|
440 |
# itemNotFound (404),
|
441 |
# unauthorized (401),
|
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# badRequest (400)
|
443 |
|
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version = request.GET.get('version')
|
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try:
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meta = backend.get_object_meta(request.user, v_account, v_container, v_object, version) |
447 |
if version is None: |
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permissions = backend.get_object_permissions(request.user, v_account, v_container, v_object) |
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public = backend.get_object_public(request.user, v_account, v_container, v_object) |
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else:
|
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permissions = None
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public = None
|
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except NotAllowedError:
|
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raise Unauthorized('Access denied') |
455 |
except NameError: |
456 |
raise ItemNotFound('Object does not exist') |
457 |
except IndexError: |
458 |
raise ItemNotFound('Version does not exist') |
459 |
|
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update_manifest_meta(request, v_account, meta) |
461 |
update_sharing_meta(permissions, v_account, v_container, v_object, meta) |
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update_public_meta(public, meta) |
463 |
|
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response = HttpResponse(status=200)
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put_object_headers(response, meta) |
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return response
|
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|
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@api_method('GET', format_allowed=True) |
469 |
def object_read(request, v_account, v_container, v_object): |
470 |
# Normal Response Codes: 200, 206
|
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# Error Response Codes: serviceUnavailable (503),
|
472 |
# rangeNotSatisfiable (416),
|
473 |
# preconditionFailed (412),
|
474 |
# itemNotFound (404),
|
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# unauthorized (401),
|
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# badRequest (400),
|
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# notModified (304)
|
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|
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version = request.GET.get('version')
|
480 |
|
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# Reply with the version list. Do this first, as the object may be deleted.
|
482 |
if version == 'list': |
483 |
if request.serialization == 'text': |
484 |
raise BadRequest('No format specified for version list.') |
485 |
|
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try:
|
487 |
v = backend.list_versions(request.user, v_account, v_container, v_object) |
488 |
except NotAllowedError:
|
489 |
raise Unauthorized('Access denied') |
490 |
d = {'versions': v}
|
491 |
if request.serialization == 'xml': |
492 |
d['object'] = v_object
|
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data = render_to_string('versions.xml', d)
|
494 |
elif request.serialization == 'json': |
495 |
data = json.dumps(d) |
496 |
|
497 |
response = HttpResponse(data, status=200)
|
498 |
response['Content-Length'] = len(data) |
499 |
return response
|
500 |
|
501 |
try:
|
502 |
meta = backend.get_object_meta(request.user, v_account, v_container, v_object, version) |
503 |
if version is None: |
504 |
permissions = backend.get_object_permissions(request.user, v_account, v_container, v_object) |
505 |
public = backend.get_object_public(request.user, v_account, v_container, v_object) |
506 |
else:
|
507 |
permissions = None
|
508 |
public = None
|
509 |
except NotAllowedError:
|
510 |
raise Unauthorized('Access denied') |
511 |
except NameError: |
512 |
raise ItemNotFound('Object does not exist') |
513 |
except IndexError: |
514 |
raise ItemNotFound('Version does not exist') |
515 |
|
516 |
update_manifest_meta(request, v_account, meta) |
517 |
update_sharing_meta(permissions, v_account, v_container, v_object, meta) |
518 |
update_public_meta(public, meta) |
519 |
|
520 |
# Evaluate conditions.
|
521 |
validate_modification_preconditions(request, meta) |
522 |
try:
|
523 |
validate_matching_preconditions(request, meta) |
524 |
except NotModified:
|
525 |
response = HttpResponse(status=304)
|
526 |
response['ETag'] = meta['hash'] |
527 |
return response
|
528 |
|
529 |
sizes = [] |
530 |
hashmaps = [] |
531 |
if 'X-Object-Manifest' in meta: |
532 |
try:
|
533 |
src_container, src_name = split_container_object_string('/' + meta['X-Object-Manifest']) |
534 |
objects = backend.list_objects(request.user, v_account, src_container, prefix=src_name, virtual=False)
|
535 |
except NotAllowedError:
|
536 |
raise Unauthorized('Access denied') |
537 |
except ValueError: |
538 |
raise BadRequest('Invalid X-Object-Manifest header') |
539 |
except NameError: |
540 |
raise ItemNotFound('Container does not exist') |
541 |
|
542 |
try:
|
543 |
for x in objects: |
544 |
s, h = backend.get_object_hashmap(request.user, v_account, src_container, x[0], x[1]) |
545 |
sizes.append(s) |
546 |
hashmaps.append(h) |
547 |
except NotAllowedError:
|
548 |
raise Unauthorized('Access denied') |
549 |
except NameError: |
550 |
raise ItemNotFound('Object does not exist') |
551 |
except IndexError: |
552 |
raise ItemNotFound('Version does not exist') |
553 |
else:
|
554 |
try:
|
555 |
s, h = backend.get_object_hashmap(request.user, v_account, v_container, v_object, version) |
556 |
sizes.append(s) |
557 |
hashmaps.append(h) |
558 |
except NotAllowedError:
|
559 |
raise Unauthorized('Access denied') |
560 |
except NameError: |
561 |
raise ItemNotFound('Object does not exist') |
562 |
except IndexError: |
563 |
raise ItemNotFound('Version does not exist') |
564 |
|
565 |
# Reply with the hashmap.
|
566 |
if request.serialization != 'text': |
567 |
size = sum(sizes)
|
568 |
hashmap = sum(hashmaps, [])
|
569 |
d = {'block_size': backend.block_size, 'block_hash': backend.hash_algorithm, 'bytes': size, 'hashes': hashmap} |
570 |
if request.serialization == 'xml': |
571 |
d['object'] = v_object
|
572 |
data = render_to_string('hashes.xml', d)
|
573 |
elif request.serialization == 'json': |
574 |
data = json.dumps(d) |
575 |
|
576 |
response = HttpResponse(data, status=200)
|
577 |
put_object_headers(response, meta) |
578 |
response['Content-Length'] = len(data) |
579 |
return response
|
580 |
|
581 |
return object_data_response(request, sizes, hashmaps, meta)
|
582 |
|
583 |
@api_method('PUT', format_allowed=True) |
584 |
def object_write(request, v_account, v_container, v_object): |
585 |
# Normal Response Codes: 201
|
586 |
# Error Response Codes: serviceUnavailable (503),
|
587 |
# unprocessableEntity (422),
|
588 |
# lengthRequired (411),
|
589 |
# conflict (409),
|
590 |
# itemNotFound (404),
|
591 |
# unauthorized (401),
|
592 |
# badRequest (400)
|
593 |
|
594 |
if not request.GET.get('format'): |
595 |
request.serialization = 'text'
|
596 |
|
597 |
copy_from = request.META.get('HTTP_X_COPY_FROM')
|
598 |
move_from = request.META.get('HTTP_X_MOVE_FROM')
|
599 |
if copy_from or move_from: |
600 |
content_length = get_content_length(request) # Required by the API.
|
601 |
|
602 |
if move_from:
|
603 |
try:
|
604 |
src_container, src_name = split_container_object_string(move_from) |
605 |
except ValueError: |
606 |
raise BadRequest('Invalid X-Move-From header') |
607 |
copy_or_move_object(request, v_account, src_container, src_name, v_container, v_object, move=True)
|
608 |
else:
|
609 |
try:
|
610 |
src_container, src_name = split_container_object_string(copy_from) |
611 |
except ValueError: |
612 |
raise BadRequest('Invalid X-Copy-From header') |
613 |
copy_or_move_object(request, v_account, src_container, src_name, v_container, v_object, move=False)
|
614 |
return HttpResponse(status=201) |
615 |
|
616 |
meta, permissions, public = get_object_headers(request) |
617 |
content_length = -1
|
618 |
if request.META.get('HTTP_TRANSFER_ENCODING') != 'chunked': |
619 |
content_length = get_content_length(request) |
620 |
# Should be BadRequest, but API says otherwise.
|
621 |
if 'Content-Type' not in meta: |
622 |
raise LengthRequired('Missing Content-Type header') |
623 |
|
624 |
if request.serialization == 'json': |
625 |
data = ''
|
626 |
sock = raw_input_socket(request) |
627 |
for block in socket_read_iterator(sock, content_length, backend.block_size): |
628 |
data = '%s%s' % (data, block)
|
629 |
d = json.loads(data) |
630 |
if not hasattr(d, '__getitem__'): |
631 |
raise BadRequest('Invalid data formating') |
632 |
try:
|
633 |
hashmap = d['hashes']
|
634 |
size = d['bytes']
|
635 |
except KeyError: |
636 |
raise BadRequest('Invalid data formatting') |
637 |
meta.update({'hash': hashmap_hash(hashmap)}) # Update ETag. |
638 |
elif request.serialization == 'xml': |
639 |
#TODO support for xml
|
640 |
raise BadRequest('Format xml is not supported') |
641 |
else:
|
642 |
md5 = hashlib.md5() |
643 |
size = 0
|
644 |
hashmap = [] |
645 |
sock = raw_input_socket(request) |
646 |
for data in socket_read_iterator(sock, content_length, backend.block_size): |
647 |
# TODO: Raise 408 (Request Timeout) if this takes too long.
|
648 |
# TODO: Raise 499 (Client Disconnect) if a length is defined and we stop before getting this much data.
|
649 |
size += len(data)
|
650 |
hashmap.append(backend.put_block(data)) |
651 |
md5.update(data) |
652 |
|
653 |
meta['hash'] = md5.hexdigest().lower()
|
654 |
etag = request.META.get('HTTP_ETAG')
|
655 |
if etag and parse_etags(etag)[0].lower() != meta['hash']: |
656 |
raise UnprocessableEntity('Object ETag does not match') |
657 |
|
658 |
try:
|
659 |
backend.update_object_hashmap(request.user, v_account, v_container, v_object, size, hashmap, meta, True, permissions)
|
660 |
except NotAllowedError:
|
661 |
raise Unauthorized('Access denied') |
662 |
except IndexError, e: |
663 |
raise Conflict(json.dumps(e.data))
|
664 |
except NameError: |
665 |
raise ItemNotFound('Container does not exist') |
666 |
except ValueError: |
667 |
raise BadRequest('Invalid sharing header') |
668 |
except AttributeError, e: |
669 |
raise Conflict(json.dumps(e.data))
|
670 |
if public is not None: |
671 |
try:
|
672 |
backend.update_object_public(request.user, v_account, v_container, v_object, public) |
673 |
except NotAllowedError:
|
674 |
raise Unauthorized('Access denied') |
675 |
except NameError: |
676 |
raise ItemNotFound('Object does not exist') |
677 |
|
678 |
response = HttpResponse(status=201)
|
679 |
response['ETag'] = meta['hash'] |
680 |
return response
|
681 |
|
682 |
@api_method('COPY') |
683 |
def object_copy(request, v_account, v_container, v_object): |
684 |
# Normal Response Codes: 201
|
685 |
# Error Response Codes: serviceUnavailable (503),
|
686 |
# itemNotFound (404),
|
687 |
# unauthorized (401),
|
688 |
# badRequest (400)
|
689 |
|
690 |
dest_path = request.META.get('HTTP_DESTINATION')
|
691 |
if not dest_path: |
692 |
raise BadRequest('Missing Destination header') |
693 |
try:
|
694 |
dest_container, dest_name = split_container_object_string(dest_path) |
695 |
except ValueError: |
696 |
raise BadRequest('Invalid Destination header') |
697 |
copy_or_move_object(request, v_account, v_container, v_object, dest_container, dest_name, move=False)
|
698 |
return HttpResponse(status=201) |
699 |
|
700 |
@api_method('MOVE') |
701 |
def object_move(request, v_account, v_container, v_object): |
702 |
# Normal Response Codes: 201
|
703 |
# Error Response Codes: serviceUnavailable (503),
|
704 |
# itemNotFound (404),
|
705 |
# unauthorized (401),
|
706 |
# badRequest (400)
|
707 |
|
708 |
dest_path = request.META.get('HTTP_DESTINATION')
|
709 |
if not dest_path: |
710 |
raise BadRequest('Missing Destination header') |
711 |
try:
|
712 |
dest_container, dest_name = split_container_object_string(dest_path) |
713 |
except ValueError: |
714 |
raise BadRequest('Invalid Destination header') |
715 |
copy_or_move_object(request, v_account, v_container, v_object, dest_container, dest_name, move=True)
|
716 |
return HttpResponse(status=201) |
717 |
|
718 |
@api_method('POST') |
719 |
def object_update(request, v_account, v_container, v_object): |
720 |
# Normal Response Codes: 202, 204
|
721 |
# Error Response Codes: serviceUnavailable (503),
|
722 |
# conflict (409),
|
723 |
# itemNotFound (404),
|
724 |
# unauthorized (401),
|
725 |
# badRequest (400)
|
726 |
|
727 |
meta, permissions, public = get_object_headers(request) |
728 |
content_type = meta.get('Content-Type')
|
729 |
if content_type:
|
730 |
del(meta['Content-Type']) # Do not allow changing the Content-Type. |
731 |
|
732 |
try:
|
733 |
prev_meta = backend.get_object_meta(request.user, v_account, v_container, v_object) |
734 |
except NotAllowedError:
|
735 |
raise Unauthorized('Access denied') |
736 |
except NameError: |
737 |
raise ItemNotFound('Object does not exist') |
738 |
# If replacing, keep previous values of 'Content-Type' and 'hash'.
|
739 |
replace = True
|
740 |
if 'update' in request.GET: |
741 |
replace = False
|
742 |
if replace:
|
743 |
for k in ('Content-Type', 'hash'): |
744 |
if k in prev_meta: |
745 |
meta[k] = prev_meta[k] |
746 |
|
747 |
# A Content-Type or X-Source-Object header indicates data updates.
|
748 |
src_object = request.META.get('HTTP_X_SOURCE_OBJECT')
|
749 |
if (not content_type or content_type != 'application/octet-stream') and not src_object: |
750 |
# Do permissions first, as it may fail easier.
|
751 |
if permissions is not None: |
752 |
try:
|
753 |
backend.update_object_permissions(request.user, v_account, v_container, v_object, permissions) |
754 |
except NotAllowedError:
|
755 |
raise Unauthorized('Access denied') |
756 |
except NameError: |
757 |
raise ItemNotFound('Object does not exist') |
758 |
except ValueError: |
759 |
raise BadRequest('Invalid sharing header') |
760 |
except AttributeError, e: |
761 |
raise Conflict(json.dumps(e.data))
|
762 |
if public is not None: |
763 |
try:
|
764 |
backend.update_object_public(request.user, v_account, v_container, v_object, public) |
765 |
except NotAllowedError:
|
766 |
raise Unauthorized('Access denied') |
767 |
except NameError: |
768 |
raise ItemNotFound('Object does not exist') |
769 |
try:
|
770 |
backend.update_object_meta(request.user, v_account, v_container, v_object, meta, replace) |
771 |
except NotAllowedError:
|
772 |
raise Unauthorized('Access denied') |
773 |
except NameError: |
774 |
raise ItemNotFound('Object does not exist') |
775 |
return HttpResponse(status=202) |
776 |
|
777 |
# Single range update. Range must be in Content-Range.
|
778 |
# Based on: http://code.google.com/p/gears/wiki/ContentRangePostProposal
|
779 |
# (with the addition that '*' is allowed for the range - will append).
|
780 |
content_range = request.META.get('HTTP_CONTENT_RANGE')
|
781 |
if not content_range: |
782 |
raise BadRequest('Missing Content-Range header') |
783 |
ranges = get_content_range(request) |
784 |
if not ranges: |
785 |
raise RangeNotSatisfiable('Invalid Content-Range header') |
786 |
|
787 |
try:
|
788 |
size, hashmap = backend.get_object_hashmap(request.user, v_account, v_container, v_object) |
789 |
except NotAllowedError:
|
790 |
raise Unauthorized('Access denied') |
791 |
except NameError: |
792 |
raise ItemNotFound('Object does not exist') |
793 |
|
794 |
offset, length, total = ranges |
795 |
if offset is None: |
796 |
offset = size |
797 |
elif offset > size:
|
798 |
raise RangeNotSatisfiable('Supplied offset is beyond object limits') |
799 |
if src_object:
|
800 |
src_container, src_name = split_container_object_string(src_object) |
801 |
src_version = request.META.get('HTTP_X_SOURCE_VERSION')
|
802 |
try:
|
803 |
src_size, src_hashmap = backend.get_object_hashmap(request.user, v_account, src_container, src_name, src_version) |
804 |
except NotAllowedError:
|
805 |
raise Unauthorized('Access denied') |
806 |
except NameError: |
807 |
raise ItemNotFound('Source object does not exist') |
808 |
|
809 |
if length is None: |
810 |
length = src_size |
811 |
elif length > src_size:
|
812 |
raise BadRequest('Object length is smaller than range length') |
813 |
else:
|
814 |
# Require either a Content-Length, or 'chunked' Transfer-Encoding.
|
815 |
content_length = -1
|
816 |
if request.META.get('HTTP_TRANSFER_ENCODING') != 'chunked': |
817 |
content_length = get_content_length(request) |
818 |
|
819 |
if length is None: |
820 |
length = content_length |
821 |
else:
|
822 |
if content_length == -1: |
823 |
# TODO: Get up to length bytes in chunks.
|
824 |
length = content_length |
825 |
elif length != content_length:
|
826 |
raise BadRequest('Content length does not match range length') |
827 |
if total is not None and (total != size or offset >= size or (length > 0 and offset + length >= size)): |
828 |
raise RangeNotSatisfiable('Supplied range will change provided object limits') |
829 |
|
830 |
dest_bytes = request.META.get('HTTP_X_OBJECT_BYTES')
|
831 |
if dest_bytes is not None: |
832 |
dest_bytes = get_int_parameter(dest_bytes) |
833 |
if dest_bytes is None: |
834 |
raise BadRequest('Invalid X-Object-Bytes header') |
835 |
|
836 |
if src_object:
|
837 |
if offset % backend.block_size == 0: |
838 |
# Update the hashes only.
|
839 |
sbi = 0
|
840 |
while length > 0: |
841 |
bi = int(offset / backend.block_size)
|
842 |
bl = min(length, backend.block_size)
|
843 |
if bi < len(hashmap): |
844 |
if bl == backend.block_size:
|
845 |
hashmap[bi] = src_hashmap[sbi] |
846 |
else:
|
847 |
data = backend.get_block(src_hashmap[sbi]) |
848 |
hashmap[bi] = backend.update_block(hashmap[bi], data[:bl], 0)
|
849 |
else:
|
850 |
hashmap.append(src_hashmap[sbi]) |
851 |
offset += bl |
852 |
length -= bl |
853 |
sbi += 1
|
854 |
else:
|
855 |
data = ''
|
856 |
sbi = 0
|
857 |
while length > 0: |
858 |
data += backend.get_block(src_hashmap[sbi]) |
859 |
if length < backend.block_size:
|
860 |
data = data[:length] |
861 |
bytes = put_object_block(hashmap, data, offset) |
862 |
offset += bytes
|
863 |
data = data[bytes:]
|
864 |
length -= bytes
|
865 |
sbi += 1
|
866 |
else:
|
867 |
sock = raw_input_socket(request) |
868 |
data = ''
|
869 |
for d in socket_read_iterator(sock, length, backend.block_size): |
870 |
# TODO: Raise 408 (Request Timeout) if this takes too long.
|
871 |
# TODO: Raise 499 (Client Disconnect) if a length is defined and we stop before getting this much data.
|
872 |
data += d |
873 |
bytes = put_object_block(hashmap, data, offset) |
874 |
offset += bytes
|
875 |
data = data[bytes:]
|
876 |
if len(data) > 0: |
877 |
put_object_block(hashmap, data, offset) |
878 |
|
879 |
if offset > size:
|
880 |
size = offset |
881 |
if dest_bytes is not None and dest_bytes < size: |
882 |
size = dest_bytes |
883 |
hashmap = hashmap[:(int((size - 1) / backend.block_size) + 1)] |
884 |
meta.update({'hash': hashmap_hash(hashmap)}) # Update ETag. |
885 |
try:
|
886 |
backend.update_object_hashmap(request.user, v_account, v_container, v_object, size, hashmap, meta, replace, permissions) |
887 |
except NotAllowedError:
|
888 |
raise Unauthorized('Access denied') |
889 |
except NameError: |
890 |
raise ItemNotFound('Container does not exist') |
891 |
except ValueError: |
892 |
raise BadRequest('Invalid sharing header') |
893 |
except AttributeError, e: |
894 |
raise Conflict(json.dumps(e.data))
|
895 |
if public is not None: |
896 |
try:
|
897 |
backend.update_object_public(request.user, v_account, v_container, v_object, public) |
898 |
except NotAllowedError:
|
899 |
raise Unauthorized('Access denied') |
900 |
except NameError: |
901 |
raise ItemNotFound('Object does not exist') |
902 |
|
903 |
response = HttpResponse(status=204)
|
904 |
response['ETag'] = meta['hash'] |
905 |
return response
|
906 |
|
907 |
@api_method('DELETE') |
908 |
def object_delete(request, v_account, v_container, v_object): |
909 |
# Normal Response Codes: 204
|
910 |
# Error Response Codes: serviceUnavailable (503),
|
911 |
# itemNotFound (404),
|
912 |
# unauthorized (401),
|
913 |
# badRequest (400)
|
914 |
|
915 |
try:
|
916 |
backend.delete_object(request.user, v_account, v_container, v_object) |
917 |
except NotAllowedError:
|
918 |
raise Unauthorized('Access denied') |
919 |
except NameError: |
920 |
raise ItemNotFound('Object does not exist') |
921 |
return HttpResponse(status=204) |
922 |
|
923 |
@api_method()
|
924 |
def method_not_allowed(request): |
925 |
raise BadRequest('Method not allowed') |