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# Copyright (c) 2010-2014 OpenStack Foundation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
from swift.common.utils import public
from swift.common.middleware.s3api.controllers.base import Controller, \
bucket_operation
from swift.common.middleware.s3api.etree import Element, SubElement, \
fromstring, tostring, XMLSyntaxError, DocumentInvalid
from swift.common.middleware.s3api.s3response import HTTPOk, S3NotImplemented, \
NoSuchKey, ErrorResponse, MalformedXML, UserKeyMustBeSpecified, \
AccessDenied, MissingRequestBodyError
MAX_MULTI_DELETE_BODY_SIZE = 61365
class MultiObjectDeleteController(Controller):
"""
Handles Delete Multiple Objects, which is logged as a MULTI_OBJECT_DELETE
operation in the S3 server log.
"""
def _gen_error_body(self, error, elem, delete_list):
for key, version in delete_list:
if version is not None:
# TODO: delete the specific version of the object
raise S3NotImplemented()
error_elem = SubElement(elem, 'Error')
SubElement(error_elem, 'Key').text = key
SubElement(error_elem, 'Code').text = error.__class__.__name__
SubElement(error_elem, 'Message').text = error._msg
return tostring(elem)
@public
@bucket_operation
def POST(self, req):
"""
Handles Delete Multiple Objects.
"""
def object_key_iter(elem):
for obj in elem.iterchildren('Object'):
key = obj.find('./Key').text
if not key:
raise UserKeyMustBeSpecified()
version = obj.find('./VersionId')
if version is not None:
version = version.text
yield key, version
try:
xml = req.xml(MAX_MULTI_DELETE_BODY_SIZE)
if not xml:
raise MissingRequestBodyError()
req.check_md5(xml)
elem = fromstring(xml, 'Delete', self.logger)
quiet = elem.find('./Quiet')
if quiet is not None and quiet.text.lower() == 'true':
self.quiet = True
else:
self.quiet = False
delete_list = list(object_key_iter(elem))
if len(delete_list) > self.conf.max_multi_delete_objects:
raise MalformedXML()
except (XMLSyntaxError, DocumentInvalid):
raise MalformedXML()
except ErrorResponse:
raise
except Exception as e:
exc_type, exc_value, exc_traceback = sys.exc_info()
self.logger.error(e)
raise exc_type, exc_value, exc_traceback
elem = Element('DeleteResult')
# check bucket existence
try:
req.get_response(self.app, 'HEAD')
except AccessDenied as error:
body = self._gen_error_body(error, elem, delete_list)
return HTTPOk(body=body)
for key, version in delete_list:
if version is not None:
# TODO: delete the specific version of the object
raise S3NotImplemented()
req.object_name = key
try:
query = req.gen_multipart_manifest_delete_query(self.app)
req.get_response(self.app, method='DELETE', query=query)
except NoSuchKey:
pass
except ErrorResponse as e:
error = SubElement(elem, 'Error')
SubElement(error, 'Key').text = key
SubElement(error, 'Code').text = e.__class__.__name__
SubElement(error, 'Message').text = e._msg
continue
if not self.quiet:
deleted = SubElement(elem, 'Deleted')
SubElement(deleted, 'Key').text = key
body = tostring(elem)
return HTTPOk(body=body)
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