swift/swift/account/utils.py

115 lines
4.3 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 time
from xml.sax import saxutils
from swift.common.swob import HTTPOk, HTTPNoContent
from swift.common.utils import json, 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(time.time()).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((key, value)
for key, (value, timestamp) in
broker.metadata.iteritems() if value != '')
return resp_headers
def account_listing_response(account, req, response_content_type, broker=None,
limit='', marker='', end_marker='', prefix='',
delimiter=''):
if broker is None:
broker = FakeAccountBroker()
resp_headers = get_response_headers(broker)
account_list = broker.list_containers_iter(limit, marker, end_marker,
prefix, delimiter)
if response_content_type == 'application/json':
data = []
for (name, object_count, bytes_used, is_subdir) in account_list:
if is_subdir:
data.append({'subdir': name})
else:
data.append({'name': name, 'count': object_count,
'bytes': bytes_used})
account_list = json.dumps(data)
elif response_content_type.endswith('/xml'):
output_list = ['<?xml version="1.0" encoding="UTF-8"?>',
'<account name=%s>' % saxutils.quoteattr(account)]
for (name, object_count, bytes_used, is_subdir) in account_list:
if is_subdir:
output_list.append(
'<subdir name=%s />' % saxutils.quoteattr(name))
else:
item = '<container><name>%s</name><count>%s</count>' \
'<bytes>%s</bytes></container>' % \
(saxutils.escape(name), object_count, bytes_used)
output_list.append(item)
output_list.append('</account>')
account_list = '\n'.join(output_list)
else:
if not account_list:
resp = HTTPNoContent(request=req, headers=resp_headers)
resp.content_type = response_content_type
resp.charset = 'utf-8'
return resp
account_list = '\n'.join(r[0] for r in account_list) + '\n'
ret = HTTPOk(body=account_list, request=req, headers=resp_headers)
ret.content_type = response_content_type
ret.charset = 'utf-8'
return ret