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# Copyright (c) 2012-2013 Red Hat, Inc.
#
# 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.
""" Container Server for Gluster Swift UFO """
# Simply importing this monkey patches the constraint handling to fit our
# needs
import gluster.swift.common.constraints # noqa
from swift.container import server
from gluster.swift.common.DiskDir import DiskDir
from swift.common.utils import public, timing_stats
from swift.common.exceptions import DiskFileNoSpace
from swift.common.swob import HTTPInsufficientStorage
class ContainerController(server.ContainerController):
"""
Subclass of the container server's ContainerController which replaces the
_get_container_broker() method so that we can use Gluster's DiskDir
duck-type of the container DatabaseBroker object, and make the
account_update() method a no-op (information is simply stored on disk and
already updated by virtue of performaing the file system operations
directly).
"""
def _get_container_broker(self, drive, part, account, container, **kwargs):
"""
Overriden to provide the GlusterFS specific broker that talks to
Gluster for the information related to servicing a given request
instead of talking to a database.
:param drive: drive that holds the container
:param part: partition the container is in
:param account: account name
:param container: container name
:returns: DiskDir object, a duck-type of DatabaseBroker
"""
return DiskDir(self.root, drive, account, container, self.logger,
**kwargs)
def account_update(self, req, account, container, broker):
"""
Update the account server(s) with latest container info.
For Gluster, this is just a no-op, since an account is just the
directory holding all the container directories.
:param req: swob.Request object
:param account: account name
:param container: container name
:param broker: container DB broker object
:returns: None.
"""
return None
@public
@timing_stats()
def PUT(self, req):
try:
return server.ContainerController.PUT(self, req)
except DiskFileNoSpace:
# As container=directory in gluster-swift, we might run out of
# space or exceed quota when creating containers.
drive = req.split_path(1, 1, True)
return HTTPInsufficientStorage(drive=drive, request=req)
def app_factory(global_conf, **local_conf):
"""paste.deploy app factory for creating WSGI container server apps."""
conf = global_conf.copy()
conf.update(local_conf)
return ContainerController(conf)
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