100d6b01bd
As of October 28th, 2013, we rebase to OpenStack Swift master (commit 4bfe674) to pick up the lastest officially supported DiskFile API changes. We use a snapshot of OpenStack Swift stored in the gluster-swift launchpad downloads area so that we can deliberately rebase at our own pace. With this refactoring, all the code for handling I/O is wholly contained in the swift tree for object operations. This will allow us to use a different fs_utils implementation in the future (for example, one based on a yet-to-be-implemented python bindings over libgfapi). This also means the "Fake_file" class has been removed entirely. Change-Id: I767983f88c59786e30b6c64da16d1cb6ab3c3e7f Signed-off-by: Peter Portante <peter.portante@redhat.com> Reviewed-on: http://review.gluster.org/5993 Reviewed-by: Luis Pabon <lpabon@redhat.com> Tested-by: Luis Pabon <lpabon@redhat.com>
89 lines
3.1 KiB
Python
89 lines
3.1 KiB
Python
# Copyright (c) 2012-2013 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" Object Server for Gluster for Swift """
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# Simply importing this monkey patches the constraint handling to fit our
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# needs
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import gluster.swift.common.constraints # noqa
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from swift.obj import server
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from gluster.swift.obj.diskfile import OnDiskManager
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class ObjectController(server.ObjectController):
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"""
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Subclass of the object server's ObjectController which replaces the
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container_update method with one that is a no-op (information is simply
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stored on disk and already updated by virtue of performing the file system
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operations directly).
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"""
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def setup(self, conf):
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"""
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Implementation specific setup. This method is called at the very end
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by the constructor to allow a specific implementation to modify
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existing attributes or add its own attributes.
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:param conf: WSGI configuration parameter
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"""
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# FIXME: Gluster currently does not support x-delete-at, as there is
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# no mechanism in GlusterFS itself to expire an object, or an external
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# process that will cull expired objects.
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try:
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self.allowed_headers.remove('x-delete-at')
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except KeyError:
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pass
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# Common on-disk hierarchy shared across account, container and object
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# servers.
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self._ondisk_mgr = OnDiskManager(conf, self.logger)
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def get_diskfile(self, device, partition, account, container, obj,
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**kwargs):
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"""
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Utility method for instantiating a DiskFile object supporting a given
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REST API.
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An implementation of the object server that wants to use a different
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DiskFile class would simply over-ride this method to provide that
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behavior.
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"""
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return self._ondisk_mgr.get_diskfile(device, account, container, obj,
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**kwargs)
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def container_update(self, *args, **kwargs):
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"""
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Update the container when objects are updated.
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For Gluster, this is just a no-op, since a container is just the
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directory holding all the objects (sub-directory hierarchy of files).
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"""
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return
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def delete_at_update(self, *args, **kwargs):
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"""
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Update the expiring objects container when objects are updated.
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FIXME: Gluster currently does not support delete_at headers.
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"""
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return
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def app_factory(global_conf, **local_conf):
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"""paste.deploy app factory for creating WSGI object server apps"""
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conf = global_conf.copy()
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conf.update(local_conf)
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return ObjectController(conf)
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