swift/swift/account/utils.py

107 lines
3.9 KiB
Python

# Copyright (c) 2010-2013 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 json
import six
from swift.common.middleware import listing_formats
from swift.common.swob import HTTPOk, HTTPNoContent, str_to_wsgi
from swift.common.utils import Timestamp
from swift.common.storage_policy import POLICIES
class FakeAccountBroker(object):
"""
Quacks like an account broker, but doesn't actually do anything. Responds
like an account broker would for a real, empty account with no metadata.
"""
def get_info(self):
now = Timestamp.now().internal
return {'container_count': 0,
'object_count': 0,
'bytes_used': 0,
'created_at': now,
'put_timestamp': now}
def list_containers_iter(self, *_, **__):
return []
@property
def metadata(self):
return {}
def get_policy_stats(self):
return {}
def get_response_headers(broker):
info = broker.get_info()
resp_headers = {
'X-Account-Container-Count': info['container_count'],
'X-Account-Object-Count': info['object_count'],
'X-Account-Bytes-Used': info['bytes_used'],
'X-Timestamp': Timestamp(info['created_at']).normal,
'X-PUT-Timestamp': Timestamp(info['put_timestamp']).normal}
policy_stats = broker.get_policy_stats()
for policy_idx, stats in policy_stats.items():
policy = POLICIES.get_by_index(policy_idx)
if not policy:
continue
header_prefix = 'X-Account-Storage-Policy-%s-%%s' % policy.name
for key, value in stats.items():
header_name = header_prefix % key.replace('_', '-')
resp_headers[header_name] = value
resp_headers.update((str_to_wsgi(key), str_to_wsgi(value))
for key, (value, _timestamp) in
broker.metadata.items() if value != '')
return resp_headers
def account_listing_response(account, req, response_content_type, broker=None,
limit='', marker='', end_marker='', prefix='',
delimiter='', reverse=False):
if broker is None:
broker = FakeAccountBroker()
resp_headers = get_response_headers(broker)
account_list = broker.list_containers_iter(limit, marker, end_marker,
prefix, delimiter, reverse)
data = []
for (name, object_count, bytes_used, put_timestamp, is_subdir) \
in account_list:
name_ = name.decode('utf8') if six.PY2 else name
if is_subdir:
data.append({'subdir': name_})
else:
data.append(
{'name': name_, 'count': object_count, 'bytes': bytes_used,
'last_modified': Timestamp(put_timestamp).isoformat})
if response_content_type.endswith('/xml'):
account_list = listing_formats.account_to_xml(data, account)
ret = HTTPOk(body=account_list, request=req, headers=resp_headers)
elif response_content_type.endswith('/json'):
account_list = json.dumps(data).encode('ascii')
ret = HTTPOk(body=account_list, request=req, headers=resp_headers)
elif data:
account_list = listing_formats.listing_to_text(data)
ret = HTTPOk(body=account_list, request=req, headers=resp_headers)
else:
ret = HTTPNoContent(request=req, headers=resp_headers)
ret.content_type = response_content_type
ret.charset = 'utf-8'
return ret