root / pithos / api / functions.py @ 32a437b1
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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 xml.dom import minidom |
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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(),
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x_auth_user) |
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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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|
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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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|
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validate_modification_preconditions(request, meta) |
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|
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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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|
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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') |
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|
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if request.serialization == 'text': |
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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]) |
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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') |
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except NameError: |
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pass
|
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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) |
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object_meta.append(printable_header_dict(meta)) |
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if request.serialization == 'xml': |
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data = render_to_string('objects.xml', {'container': v_container, 'objects': object_meta}) |
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elif request.serialization == 'json': |
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data = json.dumps(object_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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|
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@api_method('HEAD') |
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def object_meta(request, v_account, v_container, v_object): |
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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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|
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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) |
| 449 |
if version is None: |
| 450 |
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') |
| 457 |
except NameError: |
| 458 |
raise ItemNotFound('Object does not exist') |
| 459 |
except IndexError: |
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raise ItemNotFound('Version does not exist') |
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|
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update_manifest_meta(request, v_account, meta) |
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update_sharing_meta(permissions, v_account, v_container, v_object, meta) |
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update_public_meta(public, meta) |
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|
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response = HttpResponse(status=200)
|
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put_object_headers(response, meta) |
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return response
|
| 469 |
|
| 470 |
@api_method('GET', format_allowed=True) |
| 471 |
def object_read(request, v_account, v_container, v_object): |
| 472 |
# Normal Response Codes: 200, 206
|
| 473 |
# Error Response Codes: serviceUnavailable (503),
|
| 474 |
# rangeNotSatisfiable (416),
|
| 475 |
# preconditionFailed (412),
|
| 476 |
# itemNotFound (404),
|
| 477 |
# unauthorized (401),
|
| 478 |
# badRequest (400),
|
| 479 |
# notModified (304)
|
| 480 |
|
| 481 |
version = request.GET.get('version')
|
| 482 |
|
| 483 |
# Reply with the version list. Do this first, as the object may be deleted.
|
| 484 |
if version == 'list': |
| 485 |
if request.serialization == 'text': |
| 486 |
raise BadRequest('No format specified for version list.') |
| 487 |
|
| 488 |
try:
|
| 489 |
v = backend.list_versions(request.user, v_account, v_container, v_object) |
| 490 |
except NotAllowedError:
|
| 491 |
raise Unauthorized('Access denied') |
| 492 |
d = {'versions': v}
|
| 493 |
if request.serialization == 'xml': |
| 494 |
d['object'] = v_object
|
| 495 |
data = render_to_string('versions.xml', d)
|
| 496 |
elif request.serialization == 'json': |
| 497 |
data = json.dumps(d) |
| 498 |
|
| 499 |
response = HttpResponse(data, status=200)
|
| 500 |
response['Content-Length'] = len(data) |
| 501 |
return response
|
| 502 |
|
| 503 |
try:
|
| 504 |
meta = backend.get_object_meta(request.user, v_account, v_container, v_object, version) |
| 505 |
if version is None: |
| 506 |
permissions = backend.get_object_permissions(request.user, v_account, v_container, v_object) |
| 507 |
public = backend.get_object_public(request.user, v_account, v_container, v_object) |
| 508 |
else:
|
| 509 |
permissions = None
|
| 510 |
public = None
|
| 511 |
except NotAllowedError:
|
| 512 |
raise Unauthorized('Access denied') |
| 513 |
except NameError: |
| 514 |
raise ItemNotFound('Object does not exist') |
| 515 |
except IndexError: |
| 516 |
raise ItemNotFound('Version does not exist') |
| 517 |
|
| 518 |
update_manifest_meta(request, v_account, meta) |
| 519 |
update_sharing_meta(permissions, v_account, v_container, v_object, meta) |
| 520 |
update_public_meta(public, meta) |
| 521 |
|
| 522 |
# Evaluate conditions.
|
| 523 |
validate_modification_preconditions(request, meta) |
| 524 |
try:
|
| 525 |
validate_matching_preconditions(request, meta) |
| 526 |
except NotModified:
|
| 527 |
response = HttpResponse(status=304)
|
| 528 |
response['ETag'] = meta['hash'] |
| 529 |
return response
|
| 530 |
|
| 531 |
sizes = [] |
| 532 |
hashmaps = [] |
| 533 |
if 'X-Object-Manifest' in meta: |
| 534 |
try:
|
| 535 |
src_container, src_name = split_container_object_string('/' + meta['X-Object-Manifest']) |
| 536 |
objects = backend.list_objects(request.user, v_account, src_container, prefix=src_name, virtual=False)
|
| 537 |
except NotAllowedError:
|
| 538 |
raise Unauthorized('Access denied') |
| 539 |
except ValueError: |
| 540 |
raise BadRequest('Invalid X-Object-Manifest header') |
| 541 |
except NameError: |
| 542 |
raise ItemNotFound('Container does not exist') |
| 543 |
|
| 544 |
try:
|
| 545 |
for x in objects: |
| 546 |
s, h = backend.get_object_hashmap(request.user, v_account, src_container, x[0], x[1]) |
| 547 |
sizes.append(s) |
| 548 |
hashmaps.append(h) |
| 549 |
except NotAllowedError:
|
| 550 |
raise Unauthorized('Access denied') |
| 551 |
except NameError: |
| 552 |
raise ItemNotFound('Object does not exist') |
| 553 |
except IndexError: |
| 554 |
raise ItemNotFound('Version does not exist') |
| 555 |
else:
|
| 556 |
try:
|
| 557 |
s, h = backend.get_object_hashmap(request.user, v_account, v_container, v_object, version) |
| 558 |
sizes.append(s) |
| 559 |
hashmaps.append(h) |
| 560 |
except NotAllowedError:
|
| 561 |
raise Unauthorized('Access denied') |
| 562 |
except NameError: |
| 563 |
raise ItemNotFound('Object does not exist') |
| 564 |
except IndexError: |
| 565 |
raise ItemNotFound('Version does not exist') |
| 566 |
|
| 567 |
# Reply with the hashmap.
|
| 568 |
if request.serialization != 'text': |
| 569 |
size = sum(sizes)
|
| 570 |
hashmap = sum(hashmaps, [])
|
| 571 |
d = {'block_size': backend.block_size, 'block_hash': backend.hash_algorithm, 'bytes': size, 'hashes': hashmap}
|
| 572 |
if request.serialization == 'xml': |
| 573 |
d['object'] = v_object
|
| 574 |
data = render_to_string('hashes.xml', d)
|
| 575 |
elif request.serialization == 'json': |
| 576 |
data = json.dumps(d) |
| 577 |
|
| 578 |
response = HttpResponse(data, status=200)
|
| 579 |
put_object_headers(response, meta) |
| 580 |
response['Content-Length'] = len(data) |
| 581 |
return response
|
| 582 |
|
| 583 |
return object_data_response(request, sizes, hashmaps, meta)
|
| 584 |
|
| 585 |
@api_method('PUT', format_allowed=True) |
| 586 |
def object_write(request, v_account, v_container, v_object): |
| 587 |
# Normal Response Codes: 201
|
| 588 |
# Error Response Codes: serviceUnavailable (503),
|
| 589 |
# unprocessableEntity (422),
|
| 590 |
# lengthRequired (411),
|
| 591 |
# conflict (409),
|
| 592 |
# itemNotFound (404),
|
| 593 |
# unauthorized (401),
|
| 594 |
# badRequest (400)
|
| 595 |
|
| 596 |
if not request.GET.get('format'): |
| 597 |
request.serialization = 'text'
|
| 598 |
|
| 599 |
copy_from = request.META.get('HTTP_X_COPY_FROM')
|
| 600 |
move_from = request.META.get('HTTP_X_MOVE_FROM')
|
| 601 |
if copy_from or move_from: |
| 602 |
content_length = get_content_length(request) # Required by the API.
|
| 603 |
|
| 604 |
if move_from:
|
| 605 |
try:
|
| 606 |
src_container, src_name = split_container_object_string(move_from) |
| 607 |
except ValueError: |
| 608 |
raise BadRequest('Invalid X-Move-From header') |
| 609 |
copy_or_move_object(request, v_account, src_container, src_name, v_container, v_object, move=True)
|
| 610 |
else:
|
| 611 |
try:
|
| 612 |
src_container, src_name = split_container_object_string(copy_from) |
| 613 |
except ValueError: |
| 614 |
raise BadRequest('Invalid X-Copy-From header') |
| 615 |
copy_or_move_object(request, v_account, src_container, src_name, v_container, v_object, move=False)
|
| 616 |
return HttpResponse(status=201) |
| 617 |
|
| 618 |
meta, permissions, public = get_object_headers(request) |
| 619 |
content_length = -1
|
| 620 |
if request.META.get('HTTP_TRANSFER_ENCODING') != 'chunked': |
| 621 |
content_length = get_content_length(request) |
| 622 |
# Should be BadRequest, but API says otherwise.
|
| 623 |
if 'Content-Type' not in meta: |
| 624 |
raise LengthRequired('Missing Content-Type header') |
| 625 |
|
| 626 |
if request.serialization != 'text': |
| 627 |
data = ''
|
| 628 |
sock = raw_input_socket(request) |
| 629 |
for block in socket_read_iterator(sock, content_length, backend.block_size): |
| 630 |
data = '%s%s' % (data, block)
|
| 631 |
|
| 632 |
if request.serialization == 'json': |
| 633 |
d = json.loads(data) |
| 634 |
if not hasattr(d, '__getitem__'): |
| 635 |
raise BadRequest('Invalid data formating') |
| 636 |
try:
|
| 637 |
hashmap = d['hashes']
|
| 638 |
size = d['bytes']
|
| 639 |
except KeyError: |
| 640 |
raise BadRequest('Invalid data formatting') |
| 641 |
elif request.serialization == 'xml': |
| 642 |
try:
|
| 643 |
xml = minidom.parseString(data) |
| 644 |
obj = xml.getElementsByTagName('object')[0] |
| 645 |
size = obj.attributes['bytes'].value
|
| 646 |
|
| 647 |
hashes = xml.getElementsByTagName('hash')
|
| 648 |
hashmap = [] |
| 649 |
for hash in hashes: |
| 650 |
hashmap.append(hash.firstChild.data)
|
| 651 |
except Exception: |
| 652 |
raise BadRequest('Invalid data formatting') |
| 653 |
|
| 654 |
meta.update({'hash': hashmap_hash(hashmap)}) # Update ETag.
|
| 655 |
else:
|
| 656 |
md5 = hashlib.md5() |
| 657 |
size = 0
|
| 658 |
hashmap = [] |
| 659 |
sock = raw_input_socket(request) |
| 660 |
for data in socket_read_iterator(sock, content_length, backend.block_size): |
| 661 |
# TODO: Raise 408 (Request Timeout) if this takes too long.
|
| 662 |
# TODO: Raise 499 (Client Disconnect) if a length is defined and we stop before getting this much data.
|
| 663 |
size += len(data)
|
| 664 |
hashmap.append(backend.put_block(data)) |
| 665 |
md5.update(data) |
| 666 |
|
| 667 |
meta['hash'] = md5.hexdigest().lower()
|
| 668 |
etag = request.META.get('HTTP_ETAG')
|
| 669 |
if etag and parse_etags(etag)[0].lower() != meta['hash']: |
| 670 |
raise UnprocessableEntity('Object ETag does not match') |
| 671 |
|
| 672 |
try:
|
| 673 |
backend.update_object_hashmap(request.user, v_account, v_container, v_object, size, hashmap, meta, True, permissions)
|
| 674 |
except NotAllowedError:
|
| 675 |
raise Unauthorized('Access denied') |
| 676 |
except IndexError, e: |
| 677 |
raise Conflict(json.dumps(e.data))
|
| 678 |
except NameError: |
| 679 |
raise ItemNotFound('Container does not exist') |
| 680 |
except ValueError: |
| 681 |
raise BadRequest('Invalid sharing header') |
| 682 |
except AttributeError, e: |
| 683 |
raise Conflict(json.dumps(e.data))
|
| 684 |
if public is not None: |
| 685 |
try:
|
| 686 |
backend.update_object_public(request.user, v_account, v_container, v_object, public) |
| 687 |
except NotAllowedError:
|
| 688 |
raise Unauthorized('Access denied') |
| 689 |
except NameError: |
| 690 |
raise ItemNotFound('Object does not exist') |
| 691 |
|
| 692 |
response = HttpResponse(status=201)
|
| 693 |
response['ETag'] = meta['hash'] |
| 694 |
return response
|
| 695 |
|
| 696 |
@api_method('COPY') |
| 697 |
def object_copy(request, v_account, v_container, v_object): |
| 698 |
# Normal Response Codes: 201
|
| 699 |
# Error Response Codes: serviceUnavailable (503),
|
| 700 |
# itemNotFound (404),
|
| 701 |
# unauthorized (401),
|
| 702 |
# badRequest (400)
|
| 703 |
|
| 704 |
dest_path = request.META.get('HTTP_DESTINATION')
|
| 705 |
if not dest_path: |
| 706 |
raise BadRequest('Missing Destination header') |
| 707 |
try:
|
| 708 |
dest_container, dest_name = split_container_object_string(dest_path) |
| 709 |
except ValueError: |
| 710 |
raise BadRequest('Invalid Destination header') |
| 711 |
copy_or_move_object(request, v_account, v_container, v_object, dest_container, dest_name, move=False)
|
| 712 |
return HttpResponse(status=201) |
| 713 |
|
| 714 |
@api_method('MOVE') |
| 715 |
def object_move(request, v_account, v_container, v_object): |
| 716 |
# Normal Response Codes: 201
|
| 717 |
# Error Response Codes: serviceUnavailable (503),
|
| 718 |
# itemNotFound (404),
|
| 719 |
# unauthorized (401),
|
| 720 |
# badRequest (400)
|
| 721 |
|
| 722 |
dest_path = request.META.get('HTTP_DESTINATION')
|
| 723 |
if not dest_path: |
| 724 |
raise BadRequest('Missing Destination header') |
| 725 |
try:
|
| 726 |
dest_container, dest_name = split_container_object_string(dest_path) |
| 727 |
except ValueError: |
| 728 |
raise BadRequest('Invalid Destination header') |
| 729 |
copy_or_move_object(request, v_account, v_container, v_object, dest_container, dest_name, move=True)
|
| 730 |
return HttpResponse(status=201) |
| 731 |
|
| 732 |
@api_method('POST') |
| 733 |
def object_update(request, v_account, v_container, v_object): |
| 734 |
# Normal Response Codes: 202, 204
|
| 735 |
# Error Response Codes: serviceUnavailable (503),
|
| 736 |
# conflict (409),
|
| 737 |
# itemNotFound (404),
|
| 738 |
# unauthorized (401),
|
| 739 |
# badRequest (400)
|
| 740 |
meta, permissions, public = get_object_headers(request) |
| 741 |
content_type = meta.get('Content-Type')
|
| 742 |
if content_type:
|
| 743 |
del(meta['Content-Type']) # Do not allow changing the Content-Type. |
| 744 |
|
| 745 |
try:
|
| 746 |
prev_meta = backend.get_object_meta(request.user, v_account, v_container, v_object) |
| 747 |
except NotAllowedError:
|
| 748 |
raise Unauthorized('Access denied') |
| 749 |
except NameError: |
| 750 |
raise ItemNotFound('Object does not exist') |
| 751 |
# If replacing, keep previous values of 'Content-Type' and 'hash'.
|
| 752 |
replace = True
|
| 753 |
if 'update' in request.GET: |
| 754 |
replace = False
|
| 755 |
if replace:
|
| 756 |
for k in ('Content-Type', 'hash'): |
| 757 |
if k in prev_meta: |
| 758 |
meta[k] = prev_meta[k] |
| 759 |
|
| 760 |
# A Content-Type or X-Source-Object header indicates data updates.
|
| 761 |
src_object = request.META.get('HTTP_X_SOURCE_OBJECT')
|
| 762 |
if (not content_type or content_type != 'application/octet-stream') and not src_object: |
| 763 |
# Do permissions first, as it may fail easier.
|
| 764 |
if permissions is not None: |
| 765 |
try:
|
| 766 |
backend.update_object_permissions(request.user, v_account, v_container, v_object, permissions) |
| 767 |
except NotAllowedError:
|
| 768 |
raise Unauthorized('Access denied') |
| 769 |
except NameError: |
| 770 |
raise ItemNotFound('Object does not exist') |
| 771 |
except ValueError: |
| 772 |
raise BadRequest('Invalid sharing header') |
| 773 |
except AttributeError, e: |
| 774 |
raise Conflict(json.dumps(e.data))
|
| 775 |
if public is not None: |
| 776 |
try:
|
| 777 |
backend.update_object_public(request.user, v_account, v_container, v_object, public) |
| 778 |
except NotAllowedError:
|
| 779 |
raise Unauthorized('Access denied') |
| 780 |
except NameError: |
| 781 |
raise ItemNotFound('Object does not exist') |
| 782 |
try:
|
| 783 |
backend.update_object_meta(request.user, v_account, v_container, v_object, meta, replace) |
| 784 |
except NotAllowedError:
|
| 785 |
raise Unauthorized('Access denied') |
| 786 |
except NameError: |
| 787 |
raise ItemNotFound('Object does not exist') |
| 788 |
return HttpResponse(status=202) |
| 789 |
|
| 790 |
# Single range update. Range must be in Content-Range.
|
| 791 |
# Based on: http://code.google.com/p/gears/wiki/ContentRangePostProposal
|
| 792 |
# (with the addition that '*' is allowed for the range - will append).
|
| 793 |
content_range = request.META.get('HTTP_CONTENT_RANGE')
|
| 794 |
if not content_range: |
| 795 |
raise BadRequest('Missing Content-Range header') |
| 796 |
ranges = get_content_range(request) |
| 797 |
if not ranges: |
| 798 |
raise RangeNotSatisfiable('Invalid Content-Range header') |
| 799 |
|
| 800 |
try:
|
| 801 |
size, hashmap = backend.get_object_hashmap(request.user, v_account, v_container, v_object) |
| 802 |
except NotAllowedError:
|
| 803 |
raise Unauthorized('Access denied') |
| 804 |
except NameError: |
| 805 |
raise ItemNotFound('Object does not exist') |
| 806 |
|
| 807 |
offset, length, total = ranges |
| 808 |
if offset is None: |
| 809 |
offset = size |
| 810 |
elif offset > size:
|
| 811 |
raise RangeNotSatisfiable('Supplied offset is beyond object limits') |
| 812 |
if src_object:
|
| 813 |
src_container, src_name = split_container_object_string(src_object) |
| 814 |
src_version = request.META.get('HTTP_X_SOURCE_VERSION')
|
| 815 |
try:
|
| 816 |
src_size, src_hashmap = backend.get_object_hashmap(request.user, v_account, src_container, src_name, src_version) |
| 817 |
except NotAllowedError:
|
| 818 |
raise Unauthorized('Access denied') |
| 819 |
except NameError: |
| 820 |
raise ItemNotFound('Source object does not exist') |
| 821 |
|
| 822 |
if length is None: |
| 823 |
length = src_size |
| 824 |
elif length > src_size:
|
| 825 |
raise BadRequest('Object length is smaller than range length') |
| 826 |
else:
|
| 827 |
# Require either a Content-Length, or 'chunked' Transfer-Encoding.
|
| 828 |
content_length = -1
|
| 829 |
if request.META.get('HTTP_TRANSFER_ENCODING') != 'chunked': |
| 830 |
content_length = get_content_length(request) |
| 831 |
|
| 832 |
if length is None: |
| 833 |
length = content_length |
| 834 |
else:
|
| 835 |
if content_length == -1: |
| 836 |
# TODO: Get up to length bytes in chunks.
|
| 837 |
length = content_length |
| 838 |
elif length != content_length:
|
| 839 |
raise BadRequest('Content length does not match range length') |
| 840 |
if total is not None and (total != size or offset >= size or (length > 0 and offset + length >= size)): |
| 841 |
raise RangeNotSatisfiable('Supplied range will change provided object limits') |
| 842 |
|
| 843 |
dest_bytes = request.META.get('HTTP_X_OBJECT_BYTES')
|
| 844 |
if dest_bytes is not None: |
| 845 |
dest_bytes = get_int_parameter(dest_bytes) |
| 846 |
if dest_bytes is None: |
| 847 |
raise BadRequest('Invalid X-Object-Bytes header') |
| 848 |
|
| 849 |
if src_object:
|
| 850 |
if offset % backend.block_size == 0: |
| 851 |
# Update the hashes only.
|
| 852 |
sbi = 0
|
| 853 |
while length > 0: |
| 854 |
bi = int(offset / backend.block_size)
|
| 855 |
bl = min(length, backend.block_size)
|
| 856 |
if bi < len(hashmap): |
| 857 |
if bl == backend.block_size:
|
| 858 |
hashmap[bi] = src_hashmap[sbi] |
| 859 |
else:
|
| 860 |
data = backend.get_block(src_hashmap[sbi]) |
| 861 |
hashmap[bi] = backend.update_block(hashmap[bi], data[:bl], 0)
|
| 862 |
else:
|
| 863 |
hashmap.append(src_hashmap[sbi]) |
| 864 |
offset += bl |
| 865 |
length -= bl |
| 866 |
sbi += 1
|
| 867 |
else:
|
| 868 |
data = ''
|
| 869 |
sbi = 0
|
| 870 |
while length > 0: |
| 871 |
data += backend.get_block(src_hashmap[sbi]) |
| 872 |
if length < backend.block_size:
|
| 873 |
data = data[:length] |
| 874 |
bytes = put_object_block(hashmap, data, offset) |
| 875 |
offset += bytes
|
| 876 |
data = data[bytes:]
|
| 877 |
length -= bytes
|
| 878 |
sbi += 1
|
| 879 |
else:
|
| 880 |
sock = raw_input_socket(request) |
| 881 |
data = ''
|
| 882 |
for d in socket_read_iterator(sock, length, backend.block_size): |
| 883 |
# TODO: Raise 408 (Request Timeout) if this takes too long.
|
| 884 |
# TODO: Raise 499 (Client Disconnect) if a length is defined and we stop before getting this much data.
|
| 885 |
data += d |
| 886 |
bytes = put_object_block(hashmap, data, offset) |
| 887 |
offset += bytes
|
| 888 |
data = data[bytes:]
|
| 889 |
if len(data) > 0: |
| 890 |
put_object_block(hashmap, data, offset) |
| 891 |
|
| 892 |
if offset > size:
|
| 893 |
size = offset |
| 894 |
if dest_bytes is not None and dest_bytes < size: |
| 895 |
size = dest_bytes |
| 896 |
hashmap = hashmap[:(int((size - 1) / backend.block_size) + 1)] |
| 897 |
meta.update({'hash': hashmap_hash(hashmap)}) # Update ETag.
|
| 898 |
try:
|
| 899 |
backend.update_object_hashmap(request.user, v_account, v_container, v_object, size, hashmap, meta, replace, permissions) |
| 900 |
except NotAllowedError:
|
| 901 |
raise Unauthorized('Access denied') |
| 902 |
except NameError: |
| 903 |
raise ItemNotFound('Container does not exist') |
| 904 |
except ValueError: |
| 905 |
raise BadRequest('Invalid sharing header') |
| 906 |
except AttributeError, e: |
| 907 |
raise Conflict(json.dumps(e.data))
|
| 908 |
if public is not None: |
| 909 |
try:
|
| 910 |
backend.update_object_public(request.user, v_account, v_container, v_object, public) |
| 911 |
except NotAllowedError:
|
| 912 |
raise Unauthorized('Access denied') |
| 913 |
except NameError: |
| 914 |
raise ItemNotFound('Object does not exist') |
| 915 |
|
| 916 |
response = HttpResponse(status=204)
|
| 917 |
response['ETag'] = meta['hash'] |
| 918 |
return response
|
| 919 |
|
| 920 |
@api_method('DELETE') |
| 921 |
def object_delete(request, v_account, v_container, v_object): |
| 922 |
# Normal Response Codes: 204
|
| 923 |
# Error Response Codes: serviceUnavailable (503),
|
| 924 |
# itemNotFound (404),
|
| 925 |
# unauthorized (401),
|
| 926 |
# badRequest (400)
|
| 927 |
|
| 928 |
try:
|
| 929 |
backend.delete_object(request.user, v_account, v_container, v_object) |
| 930 |
except NotAllowedError:
|
| 931 |
raise Unauthorized('Access denied') |
| 932 |
except NameError: |
| 933 |
raise ItemNotFound('Object does not exist') |
| 934 |
return HttpResponse(status=204) |
| 935 |
|
| 936 |
@api_method()
|
| 937 |
def method_not_allowed(request): |
| 938 |
raise BadRequest('Method not allowed') |