swift: Gluster object storage plugin for Openstack Swift.

Change-Id: I5e07339064b1f3bb2aa5b04740ed870e114db4f9
BUG: 811430
Signed-off-by: Mohammed Junaid <junaid@redhat.com>
Reviewed-on: http://review.gluster.com/3118
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>

1 files changed, 774 insertions, 0 deletions

diff --git a/swift/1.4.8/swift.diff b/swift/1.4.8/swift.diff
new file mode 100644
index 00000000000..15201b8cd14
--- /dev/null
+++ b/swift/1.4.8/swift.diff
@@ -0,0 +1,774 @@
+diff --git a/setup.py b/setup.py
+index d195d34..b5b5ca2 100644
+--- a/setup.py
++++ b/setup.py
+@@ -1,5 +1,6 @@
+ #!/usr/bin/python
+ # Copyright (c) 2010-2012 OpenStack, LLC.
++# Copyright (c) 2011 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.
+@@ -94,6 +95,7 @@ setup(
+             'tempurl=swift.common.middleware.tempurl:filter_factory',
+             'formpost=swift.common.middleware.formpost:filter_factory',
+             'name_check=swift.common.middleware.name_check:filter_factory',
++            'gluster=swift.common.middleware.gluster:filter_factory',
+             ],
+         },
+     )
+diff --git a/swift/account/server.py b/swift/account/server.py
+index 800b3c0..99f5de3 100644
+--- a/swift/account/server.py
++++ b/swift/account/server.py
+@@ -1,4 +1,5 @@
+ # Copyright (c) 2010-2012 OpenStack, LLC.
++# Copyright (c) 2011 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.
+@@ -31,7 +32,7 @@ import simplejson
+ 
+ from swift.common.db import AccountBroker
+ from swift.common.utils import get_logger, get_param, hash_path, \
+-    normalize_timestamp, split_path, storage_directory
++    normalize_timestamp, split_path, storage_directory, plugin_enabled
+ from swift.common.constraints import ACCOUNT_LISTING_LIMIT, \
+     check_mount, check_float, check_utf8
+ from swift.common.db_replicator import ReplicatorRpc
+@@ -39,6 +40,8 @@ from swift.common.db_replicator import ReplicatorRpc
+ 
+ DATADIR = 'accounts'
+ 
++if plugin_enabled():
++    from swift.plugins.DiskDir import DiskAccount
+ 
+ class AccountController(object):
+     """WSGI controller for the account server."""
+@@ -52,8 +55,12 @@ class AccountController(object):
+             self.mount_check, logger=self.logger)
+         self.auto_create_account_prefix = \
+             conf.get('auto_create_account_prefix') or '.'
++        self.fs_object = None
+ 
+     def _get_account_broker(self, drive, part, account):
++        if self.fs_object:
++            return DiskAccount(self.root, account, self.fs_object);
++
+         hsh = hash_path(account)
+         db_dir = storage_directory(DATADIR, part, hsh)
+         db_path = os.path.join(self.root, drive, db_dir, hsh + '.db')
+@@ -121,9 +128,15 @@ class AccountController(object):
+                 if broker.is_deleted():
+                     return HTTPConflict(request=req)
+             metadata = {}
+-            metadata.update((key, (value, timestamp))
+-                for key, value in req.headers.iteritems()
+-                if key.lower().startswith('x-account-meta-'))
++            if not self.fs_object:
++                metadata.update((key, (value, timestamp))
++                    for key, value in req.headers.iteritems()
++                    if key.lower().startswith('x-account-meta-'))
++            else:
++                metadata.update((key, value)
++                    for key, value in req.headers.iteritems()
++                    if key.lower().startswith('x-account-meta-'))
++
+             if metadata:
+                 broker.update_metadata(metadata)
+             if created:
+@@ -153,6 +166,9 @@ class AccountController(object):
+             broker.stale_reads_ok = True
+         if broker.is_deleted():
+             return HTTPNotFound(request=req)
++        if self.fs_object:
++            broker.list_containers_iter(None, None,None,
++                                        None, None)
+         info = broker.get_info()
+         headers = {
+             'X-Account-Container-Count': info['container_count'],
+@@ -164,9 +180,16 @@ class AccountController(object):
+             container_ts = broker.get_container_timestamp(container)
+             if container_ts is not None:
+                 headers['X-Container-Timestamp'] = container_ts
+-        headers.update((key, value)
+-            for key, (value, timestamp) in broker.metadata.iteritems()
+-            if value != '')
++        if not self.fs_object:
++            headers.update((key, value)
++                for key, (value, timestamp) in broker.metadata.iteritems()
++                if value != '')
++        else:
++            headers.update((key, value)
++                for key, value in broker.metadata.iteritems()
++                if value != '')
++
++
+         return HTTPNoContent(request=req, headers=headers)
+ 
+     def GET(self, req):
+@@ -190,9 +213,15 @@ class AccountController(object):
+             'X-Account-Bytes-Used': info['bytes_used'],
+             'X-Timestamp': info['created_at'],
+             'X-PUT-Timestamp': info['put_timestamp']}
+-        resp_headers.update((key, value)
+-            for key, (value, timestamp) in broker.metadata.iteritems()
+-            if value != '')
++        if not self.fs_object:
++            resp_headers.update((key, value)
++                for key, (value, timestamp) in broker.metadata.iteritems()
++                if value != '')
++        else:
++            resp_headers.update((key, value)
++                for key, value in broker.metadata.iteritems()
++                if value != '')
++
+         try:
+             prefix = get_param(req, 'prefix')
+             delimiter = get_param(req, 'delimiter')
+@@ -224,6 +253,7 @@ class AccountController(object):
+                                   content_type='text/plain', request=req)
+         account_list = broker.list_containers_iter(limit, marker, end_marker,
+                                                    prefix, delimiter)
++
+         if out_content_type == 'application/json':
+             json_pattern = ['"name":%s', '"count":%s', '"bytes":%s']
+             json_pattern = '{' + ','.join(json_pattern) + '}'
+@@ -298,15 +328,29 @@ class AccountController(object):
+             return HTTPNotFound(request=req)
+         timestamp = normalize_timestamp(req.headers['x-timestamp'])
+         metadata = {}
+-        metadata.update((key, (value, timestamp))
+-            for key, value in req.headers.iteritems()
+-            if key.lower().startswith('x-account-meta-'))
++        if not self.fs_object:
++            metadata.update((key, (value, timestamp))
++                for key, value in req.headers.iteritems()
++                if key.lower().startswith('x-account-meta-'))
++        else:
++            metadata.update((key, value)
++                for key, value in req.headers.iteritems()
++                if key.lower().startswith('x-account-meta-'))
+         if metadata:
+             broker.update_metadata(metadata)
+         return HTTPNoContent(request=req)
+ 
++    def plugin(self, env):
++        if env.get('Gluster_enabled', False):
++            self.fs_object = env.get('fs_object')
++            self.root = env.get('root')
++            self.mount_check = False
++        else:
++            self.fs_object = None
++
+     def __call__(self, env, start_response):
+         start_time = time.time()
++        self.plugin(env)
+         req = Request(env)
+         self.logger.txn_id = req.headers.get('x-trans-id', None)
+         if not check_utf8(req.path_info):
+diff --git a/swift/common/middleware/gluster.py b/swift/common/middleware/gluster.py
+new file mode 100644
+index 0000000..341285d
+--- /dev/null
++++ b/swift/common/middleware/gluster.py
+@@ -0,0 +1,55 @@
++# Copyright (c) 2011 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.
++
++from swift.common.utils import get_logger, plugin_enabled
++from swift import plugins
++from ConfigParser import ConfigParser
++
++class Gluster_plugin(object):
++    """
++    Update the environment with keys that reflect Gluster_plugin enabled
++    """
++
++    def __init__(self, app, conf):
++        self.app = app
++        self.conf = conf
++        self.fs_name = 'Glusterfs'
++        self.logger = get_logger(conf, log_route='gluster')
++
++    def __call__(self, env, start_response):
++        if not plugin_enabled():
++            return self.app(env, start_response)
++        env['Gluster_enabled'] =True
++        fs_object = getattr(plugins, self.fs_name, False)
++        if not fs_object:
++            raise Exception('%s plugin not found', self.fs_name)
++
++        env['fs_object'] = fs_object()
++        fs_conf = ConfigParser()
++        if fs_conf.read('/etc/swift/fs.conf'):
++            try:
++                env['root'] = fs_conf.get ('DEFAULT', 'mount_path')
++            except NoSectionError, NoOptionError:
++                self.logger.exception(_('ERROR mount_path not present'))
++        return self.app(env, start_response)
++
++def filter_factory(global_conf, **local_conf):
++    """Returns a WSGI filter app for use with paste.deploy."""
++    conf = global_conf.copy()
++    conf.update(local_conf)
++
++    def gluster_filter(app):
++        return Gluster_plugin(app, conf)
++    return gluster_filter
+diff --git a/swift/common/utils.py b/swift/common/utils.py
+index 47edce8..afc356c 100644
+--- a/swift/common/utils.py
++++ b/swift/common/utils.py
+@@ -1,4 +1,5 @@
+ # Copyright (c) 2010-2012 OpenStack, LLC.
++# Copyright (c) 2011 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.
+@@ -1138,3 +1139,12 @@ def streq_const_time(s1, s2):
+     for (a, b) in zip(s1, s2):
+         result |= ord(a) ^ ord(b)
+     return result == 0
++
++def plugin_enabled():
++    swift_conf = ConfigParser()
++    swift_conf.read(os.path.join('/etc/swift', 'swift.conf'))
++    try:
++        return swift_conf.get('DEFAULT', 'Enable_plugin', 'no') in TRUE_VALUES
++    except NoOptionError, NoSectionError:
++        return False
++
+diff --git a/swift/container/server.py b/swift/container/server.py
+index 8a18cfd..741c81a 100644
+--- a/swift/container/server.py
++++ b/swift/container/server.py
+@@ -1,4 +1,5 @@
+ # Copyright (c) 2010-2012 OpenStack, LLC.
++# Copyright (c) 2011 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.
+@@ -31,7 +32,8 @@ from webob.exc import HTTPAccepted, HTTPBadRequest, HTTPConflict, \
+ 
+ from swift.common.db import ContainerBroker
+ from swift.common.utils import get_logger, get_param, hash_path, \
+-    normalize_timestamp, storage_directory, split_path, validate_sync_to
++    normalize_timestamp, storage_directory, split_path, validate_sync_to, \
++    plugin_enabled
+ from swift.common.constraints import CONTAINER_LISTING_LIMIT, \
+     check_mount, check_float, check_utf8
+ from swift.common.bufferedhttp import http_connect
+@@ -40,6 +42,9 @@ from swift.common.db_replicator import ReplicatorRpc
+ 
+ DATADIR = 'containers'
+ 
++if plugin_enabled():
++    from swift.plugins.DiskDir import DiskDir
++
+ 
+ class ContainerController(object):
+     """WSGI Controller for the container server."""
+@@ -62,6 +67,7 @@ class ContainerController(object):
+             ContainerBroker, self.mount_check, logger=self.logger)
+         self.auto_create_account_prefix = \
+             conf.get('auto_create_account_prefix') or '.'
++        self.fs_object = None
+ 
+     def _get_container_broker(self, drive, part, account, container):
+         """
+@@ -73,6 +79,11 @@ class ContainerController(object):
+         :param container: container name
+         :returns: ContainerBroker object
+         """
++        if self.fs_object:
++            return DiskDir(self.root, drive, part, account,
++                           container, self.logger,
++                           fs_object = self.fs_object)
++
+         hsh = hash_path(account, container)
+         db_dir = storage_directory(DATADIR, part, hsh)
+         db_path = os.path.join(self.root, drive, db_dir, hsh + '.db')
+@@ -211,10 +222,18 @@ class ContainerController(object):
+                 if broker.is_deleted():
+                     return HTTPConflict(request=req)
+             metadata = {}
+-            metadata.update((key, (value, timestamp))
+-                for key, value in req.headers.iteritems()
+-                if key.lower() in self.save_headers or
+-                   key.lower().startswith('x-container-meta-'))
++            #Note: check the structure of req.headers
++            if not self.fs_object:
++                metadata.update((key, (value, timestamp))
++                    for key, value in req.headers.iteritems()
++                    if key.lower() in self.save_headers or
++                       key.lower().startswith('x-container-meta-'))
++            else:
++                metadata.update((key, value)
++                   for key, value in req.headers.iteritems()
++                   if key.lower() in self.save_headers or
++                      key.lower().startswith('x-container-meta-'))
++
+             if metadata:
+                 if 'X-Container-Sync-To' in metadata:
+                     if 'X-Container-Sync-To' not in broker.metadata or \
+@@ -222,6 +241,7 @@ class ContainerController(object):
+                             broker.metadata['X-Container-Sync-To'][0]:
+                         broker.set_x_container_sync_points(-1, -1)
+                 broker.update_metadata(metadata)
++
+             resp = self.account_update(req, account, container, broker)
+             if resp:
+                 return resp
+@@ -252,10 +272,17 @@ class ContainerController(object):
+             'X-Timestamp': info['created_at'],
+             'X-PUT-Timestamp': info['put_timestamp'],
+         }
+-        headers.update((key, value)
+-            for key, (value, timestamp) in broker.metadata.iteritems()
+-            if value != '' and (key.lower() in self.save_headers or
+-                                key.lower().startswith('x-container-meta-')))
++        if not self.fs_object:
++            headers.update((key, value)
++                for key, (value, timestamp) in broker.metadata.iteritems()
++                if value != '' and (key.lower() in self.save_headers or
++                                    key.lower().startswith('x-container-meta-')))
++        else:
++            headers.update((key, value)
++                for key, value in broker.metadata.iteritems()
++                if value != '' and (key.lower() in self.save_headers or
++                                    key.lower().startswith('x-container-meta-')))
++
+         return HTTPNoContent(request=req, headers=headers)
+ 
+     def GET(self, req):
+@@ -268,6 +295,7 @@ class ContainerController(object):
+                                 request=req)
+         if self.mount_check and not check_mount(self.root, drive):
+             return Response(status='507 %s is not mounted' % drive)
++
+         broker = self._get_container_broker(drive, part, account, container)
+         broker.pending_timeout = 0.1
+         broker.stale_reads_ok = True
+@@ -280,10 +308,17 @@ class ContainerController(object):
+             'X-Timestamp': info['created_at'],
+             'X-PUT-Timestamp': info['put_timestamp'],
+         }
+-        resp_headers.update((key, value)
+-            for key, (value, timestamp) in broker.metadata.iteritems()
+-            if value != '' and (key.lower() in self.save_headers or
+-                                key.lower().startswith('x-container-meta-')))
++        if not self.fs_object:
++            resp_headers.update((key, value)
++                for key, (value, timestamp) in broker.metadata.iteritems()
++                if value != '' and (key.lower() in self.save_headers or
++                               key.lower().startswith('x-container-meta-')))
++        else:
++            resp_headers.update((key, value)
++                for key, value in broker.metadata.iteritems()
++                if value != '' and (key.lower() in self.save_headers or
++                               key.lower().startswith('x-container-meta-')))
++
+         try:
+             path = get_param(req, 'path')
+             prefix = get_param(req, 'prefix')
+@@ -414,10 +449,17 @@ class ContainerController(object):
+             return HTTPNotFound(request=req)
+         timestamp = normalize_timestamp(req.headers['x-timestamp'])
+         metadata = {}
+-        metadata.update((key, (value, timestamp))
+-            for key, value in req.headers.iteritems()
+-            if key.lower() in self.save_headers or
+-               key.lower().startswith('x-container-meta-'))
++        if not self.fs_object:
++            metadata.update((key, (value, timestamp))
++                for key, value in req.headers.iteritems()
++                if key.lower() in self.save_headers or
++                   key.lower().startswith('x-container-meta-'))
++        else:
++             metadata.update((key, value)
++                for key, value in req.headers.iteritems()
++                if key.lower() in self.save_headers or
++                   key.lower().startswith('x-container-meta-'))
++
+         if metadata:
+             if 'X-Container-Sync-To' in metadata:
+                 if 'X-Container-Sync-To' not in broker.metadata or \
+@@ -427,8 +469,19 @@ class ContainerController(object):
+             broker.update_metadata(metadata)
+         return HTTPNoContent(request=req)
+ 
++    def plugin(self, env):
++        if env.get('Gluster_enabled', False):
++            self.fs_object = env.get('fs_object')
++            if not self.fs_object:
++                raise NoneTypeError
++            self.root = env.get('root')
++            self.mount_check = False
++        else:
++            self.fs_object = None
++
+     def __call__(self, env, start_response):
+         start_time = time.time()
++        self.plugin(env)
+         req = Request(env)
+         self.logger.txn_id = req.headers.get('x-trans-id', None)
+         if not check_utf8(req.path_info):
+diff --git a/swift/obj/server.py b/swift/obj/server.py
+index 9cca16b..37730ff 100644
+--- a/swift/obj/server.py
++++ b/swift/obj/server.py
+@@ -1,4 +1,5 @@
+ # Copyright (c) 2010-2012 OpenStack, LLC.
++# Copyright (c) 2011 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.
+@@ -26,6 +27,7 @@ from hashlib import md5
+ from tempfile import mkstemp
+ from urllib import unquote
+ from contextlib import contextmanager
++from ConfigParser import ConfigParser
+ 
+ from webob import Request, Response, UTC
+ from webob.exc import HTTPAccepted, HTTPBadRequest, HTTPCreated, \
+@@ -37,16 +39,23 @@ from eventlet import sleep, Timeout, tpool
+ 
+ from swift.common.utils import mkdirs, normalize_timestamp, \
+     storage_directory, hash_path, renamer, fallocate, \
+-    split_path, drop_buffer_cache, get_logger, write_pickle
++    split_path, drop_buffer_cache, get_logger, write_pickle, \
++    plugin_enabled
+ from swift.common.bufferedhttp import http_connect
+-from swift.common.constraints import check_object_creation, check_mount, \
+-    check_float, check_utf8
++if plugin_enabled():
++    from swift.plugins.constraints import check_object_creation
++    from swift.plugins.utils import X_TYPE, X_OBJECT_TYPE, FILE, DIR, MARKER_DIR, \
++         OBJECT, DIR_TYPE, FILE_TYPE
++else:
++    from swift.common.constraints import check_object_creation
++
++from swift.common.constraints import  check_mount, check_float, check_utf8
++
+ from swift.common.exceptions import ConnectionTimeout, DiskFileError, \
+     DiskFileNotExist
+ from swift.obj.replicator import tpooled_get_hashes, invalidate_hash, \
+     quarantine_renamer
+ 
+-
+ DATADIR = 'objects'
+ ASYNCDIR = 'async_pending'
+ PICKLE_PROTOCOL = 2
+@@ -339,6 +348,9 @@ class DiskFile(object):
+                 raise
+         raise DiskFileNotExist('Data File does not exist.')
+ 
++if plugin_enabled():
++    from swift.plugins.DiskFile import Gluster_DiskFile
++
+ 
+ class ObjectController(object):
+     """Implements the WSGI application for the Swift Object Server."""
+@@ -377,6 +389,17 @@ class ObjectController(object):
+             'expiring_objects'
+         self.expiring_objects_container_divisor = \
+             int(conf.get('expiring_objects_container_divisor') or 86400)
++        self.fs_object = None
++
++    def get_DiskFile_obj(self, path, device, partition, account, container, obj,
++                         logger, keep_data_fp=False, disk_chunk_size=65536):
++        if self.fs_object:
++            return Gluster_DiskFile(path, device, partition, account, container,
++                            obj, logger, keep_data_fp,
++                            disk_chunk_size, fs_object = self.fs_object);
++        else:
++            return DiskFile(path, device, partition, account, container,
++                            obj, logger, keep_data_fp, disk_chunk_size)
+ 
+     def async_update(self, op, account, container, obj, host, partition,
+                      contdevice, headers_out, objdevice):
+@@ -493,7 +516,7 @@ class ObjectController(object):
+                                   content_type='text/plain')
+         if self.mount_check and not check_mount(self.devices, device):
+             return Response(status='507 %s is not mounted' % device)
+-        file = DiskFile(self.devices, device, partition, account, container,
++        file = self.get_DiskFile_obj(self.devices, device, partition, account, container,
+                         obj, self.logger, disk_chunk_size=self.disk_chunk_size)
+ 
+         if 'X-Delete-At' in file.metadata and \
+@@ -548,7 +571,7 @@ class ObjectController(object):
+         if new_delete_at and new_delete_at < time.time():
+             return HTTPBadRequest(body='X-Delete-At in past', request=request,
+                                   content_type='text/plain')
+-        file = DiskFile(self.devices, device, partition, account, container,
++        file = self.get_DiskFile_obj(self.devices, device, partition, account, container,
+                         obj, self.logger, disk_chunk_size=self.disk_chunk_size)
+         orig_timestamp = file.metadata.get('X-Timestamp')
+         upload_expiration = time.time() + self.max_upload_time
+@@ -580,12 +603,29 @@ class ObjectController(object):
+             if 'etag' in request.headers and \
+                             request.headers['etag'].lower() != etag:
+                 return HTTPUnprocessableEntity(request=request)
+-            metadata = {
+-                'X-Timestamp': request.headers['x-timestamp'],
+-                'Content-Type': request.headers['content-type'],
+-                'ETag': etag,
+-                'Content-Length': str(os.fstat(fd).st_size),
+-            }
++            content_type = request.headers['content-type']
++            if self.fs_object and not content_type:
++                content_type = FILE_TYPE
++            if not self.fs_object:
++                metadata = {
++                    'X-Timestamp': request.headers['x-timestamp'],
++                    'Content-Type': request.headers['content-type'],
++                    'ETag': etag,
++                    'Content-Length': str(os.fstat(fd).st_size),
++                }
++            else:
++                metadata = {
++                    'X-Timestamp': request.headers['x-timestamp'],
++                    'Content-Type': request.headers['content-type'],
++                    'ETag': etag,
++                    'Content-Length': str(os.fstat(fd).st_size),
++                    X_TYPE: OBJECT,
++                    X_OBJECT_TYPE: FILE,
++                }
++
++            if self.fs_object and \
++                request.headers['content-type'].lower() == DIR_TYPE:
++                metadata.update({X_OBJECT_TYPE: MARKER_DIR})
+             metadata.update(val for val in request.headers.iteritems()
+                     if val[0].lower().startswith('x-object-meta-') and
+                     len(val[0]) > 14)
+@@ -626,9 +666,9 @@ class ObjectController(object):
+                         content_type='text/plain')
+         if self.mount_check and not check_mount(self.devices, device):
+             return Response(status='507 %s is not mounted' % device)
+-        file = DiskFile(self.devices, device, partition, account, container,
+-                        obj, self.logger, keep_data_fp=True,
+-                        disk_chunk_size=self.disk_chunk_size)
++        file = self.get_DiskFile_obj(self.devices, device, partition, account, container,
++                             obj, self.logger, keep_data_fp=True,
++                             disk_chunk_size=self.disk_chunk_size)
+         if file.is_deleted() or ('X-Delete-At' in file.metadata and
+                 int(file.metadata['X-Delete-At']) <= time.time()):
+             if request.headers.get('if-match') == '*':
+@@ -702,7 +742,7 @@ class ObjectController(object):
+             return resp
+         if self.mount_check and not check_mount(self.devices, device):
+             return Response(status='507 %s is not mounted' % device)
+-        file = DiskFile(self.devices, device, partition, account, container,
++        file = self.get_DiskFile_obj(self.devices, device, partition, account, container,
+                         obj, self.logger, disk_chunk_size=self.disk_chunk_size)
+         if file.is_deleted() or ('X-Delete-At' in file.metadata and
+                 int(file.metadata['X-Delete-At']) <= time.time()):
+@@ -744,7 +784,7 @@ class ObjectController(object):
+         if self.mount_check and not check_mount(self.devices, device):
+             return Response(status='507 %s is not mounted' % device)
+         response_class = HTTPNoContent
+-        file = DiskFile(self.devices, device, partition, account, container,
++        file = self.get_DiskFile_obj(self.devices, device, partition, account, container,
+                         obj, self.logger, disk_chunk_size=self.disk_chunk_size)
+         if 'x-if-delete-at' in request.headers and \
+                 int(request.headers['x-if-delete-at']) != \
+@@ -797,9 +837,18 @@ class ObjectController(object):
+             raise hashes
+         return Response(body=pickle.dumps(hashes))
+ 
++    def plugin(self, env):
++        if env.get('Gluster_enabled', False):
++            self.fs_object = env.get('fs_object')
++            self.devices = env.get('root')
++            self.mount_check = False
++        else:
++            self.fs_object = None
++
+     def __call__(self, env, start_response):
+         """WSGI Application entry point for the Swift Object Server."""
+         start_time = time.time()
++        self.plugin(env)
+         req = Request(env)
+         self.logger.txn_id = req.headers.get('x-trans-id', None)
+         if not check_utf8(req.path_info):
+diff --git a/swift/proxy/server.py b/swift/proxy/server.py
+index 17613b8..af1ef25 100644
+--- a/swift/proxy/server.py
++++ b/swift/proxy/server.py
+@@ -1,4 +1,5 @@
+ # Copyright (c) 2010-2012 OpenStack, LLC.
++# Copyright (c) 2011 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.
+@@ -53,8 +54,20 @@ from webob import Request, Response
+ 
+ from swift.common.ring import Ring
+ from swift.common.utils import cache_from_env, ContextPool, get_logger, \
+-    get_remote_client, normalize_timestamp, split_path, TRUE_VALUES
++    get_remote_client, normalize_timestamp, split_path, TRUE_VALUES, \
++    plugin_enabled
+ from swift.common.bufferedhttp import http_connect
++
++if plugin_enabled():
++    from swift.plugins.constraints import check_object_creation, \
++        MAX_ACCOUNT_NAME_LENGTH, MAX_CONTAINER_NAME_LENGTH, MAX_FILE_SIZE
++else:
++    from swift.common.constraints import check_object_creation, \
++        MAX_ACCOUNT_NAME_LENGTH, MAX_CONTAINER_NAME_LENGTH, MAX_FILE_SIZE
++
++from swift.common.constraints import check_metadata, check_utf8, \
++    CONTAINER_LISTING_LIMIT
++
+ from swift.common.constraints import check_metadata, check_object_creation, \
+     check_utf8, CONTAINER_LISTING_LIMIT, MAX_ACCOUNT_NAME_LENGTH, \
+     MAX_CONTAINER_NAME_LENGTH, MAX_FILE_SIZE
+diff --git a/test/__init__.py b/test/__init__.py
+index ef2ce31..363a051 100644
+--- a/test/__init__.py
++++ b/test/__init__.py
+@@ -6,8 +6,16 @@ import sys
+ import os
+ from ConfigParser import MissingSectionHeaderError
+ from StringIO import StringIO
+-
+ from swift.common.utils import readconf
++from swift.common.utils import plugin_enabled
++if plugin_enabled():
++    from swift.plugins.constraints import MAX_OBJECT_NAME_LENGTH, \
++          MAX_CONTAINER_NAME_LENGTH, MAX_ACCOUNT_NAME_LENGTH, \
++          MAX_FILE_SIZE
++else:
++    from swift.common.constraints import MAX_OBJECT_NAME_LENGTH, \
++          MAX_CONTAINER_NAME_LENGTH, MAX_ACCOUNT_NAME_LENGTH, \
++          MAX_FILE_SIZE
+ 
+ setattr(__builtin__, '_', lambda x: x)
+ 
+diff --git a/test/functional/tests.py b/test/functional/tests.py
+index b25b4fd..8d12f58 100644
+--- a/test/functional/tests.py
++++ b/test/functional/tests.py
+@@ -31,6 +31,16 @@ import urllib
+ from test import get_config
+ from swift import Account, AuthenticationFailed, Connection, Container, \
+      File, ResponseError
++from test import plugin_enabled
++if plugin_enabled():
++    from test import MAX_OBJECT_NAME_LENGTH, \
++                    MAX_CONTAINER_NAME_LENGTH, MAX_ACCOUNT_NAME_LENGTH, \
++                    MAX_FILE_SIZE
++else:
++    from test import MAX_OBJECT_NAME_LENGTH, \
++                    MAX_CONTAINER_NAME_LENGTH, MAX_ACCOUNT_NAME_LENGTH, \
++                    MAX_FILE_SIZE
++
+ 
+ config = get_config()
+ 
+@@ -361,7 +371,7 @@ class TestContainer(Base):
+     set_up = False
+ 
+     def testContainerNameLimit(self):
+-        limit = 256
++        limit = MAX_CONTAINER_NAME_LENGTH
+ 
+         for l in (limit-100, limit-10, limit-1, limit,
+             limit+1, limit+10, limit+100):
+@@ -949,7 +959,7 @@ class TestFile(Base):
+             self.assert_status(404)
+ 
+     def testNameLimit(self):
+-        limit = 1024
++        limit = MAX_OBJECT_NAME_LENGTH
+ 
+         for l in (1, 10, limit/2, limit-1, limit, limit+1, limit*2):
+             file = self.env.container.file('a'*l)
+@@ -1093,7 +1103,7 @@ class TestFile(Base):
+             self.assert_(file.read(hdrs={'Range': r}) == data[0:1000])
+ 
+     def testFileSizeLimit(self):
+-        limit = 5*2**30 + 2
++        limit = MAX_FILE_SIZE
+         tsecs = 3
+ 
+         for i in (limit-100, limit-10, limit-1, limit, limit+1, limit+10,
+diff --git a/test/unit/obj/test_server.py b/test/unit/obj/test_server.py
+index 075700e..5b6f32d 100644
+--- a/test/unit/obj/test_server.py
++++ b/test/unit/obj/test_server.py
+@@ -1355,7 +1355,7 @@ class TestObjectController(unittest.TestCase):
+ 
+     def test_max_object_name_length(self):
+         timestamp = normalize_timestamp(time())
+-        req = Request.blank('/sda1/p/a/c/' + ('1' * 1024),
++        req = Request.blank('/sda1/p/a/c/' + ('1' * MAX_OBJECT_NAME_LENGTH),
+                 environ={'REQUEST_METHOD': 'PUT'},
+                 headers={'X-Timestamp': timestamp,
+                          'Content-Length': '4',
+diff --git a/test/unit/proxy/test_server.py b/test/unit/proxy/test_server.py
+index 364370e..c17fe59 100644
+--- a/test/unit/proxy/test_server.py
++++ b/test/unit/proxy/test_server.py
+@@ -21,7 +21,6 @@ import os
+ import sys
+ import unittest
+ from nose import SkipTest
+-from ConfigParser import ConfigParser
+ from contextlib import contextmanager
+ from cStringIO import StringIO
+ from gzip import GzipFile
+@@ -44,8 +43,18 @@ from swift.account import server as account_server
+ from swift.container import server as container_server
+ from swift.obj import server as object_server
+ from swift.common import ring
+-from swift.common.constraints import MAX_META_NAME_LENGTH, \
+-    MAX_META_VALUE_LENGTH, MAX_META_COUNT, MAX_META_OVERALL_SIZE, MAX_FILE_SIZE
++from swift.common.utils import plugin_enabled
++if plugin_enabled():
++    from swift.plugins.constraints import MAX_META_NAME_LENGTH, \
++        MAX_META_VALUE_LENGTH, MAX_META_COUNT, MAX_META_OVERALL_SIZE, \
++        MAX_FILE_SIZE, MAX_ACCOUNT_NAME_LENGTH, MAX_CONTAINER_NAME_LENGTH, \
++        MAX_OBJECT_NAME_LENGTH
++else:
++    from swift.plugins.constraints import MAX_META_NAME_LENGTH, \
++        MAX_META_VALUE_LENGTH, MAX_META_COUNT, MAX_META_OVERALL_SIZE, \
++        MAX_FILE_SIZE, MAX_ACCOUNT_NAME_LENGTH, MAX_CONTAINER_NAME_LENGTH, \
++        MAX_OBJECT_NAME_LENGTH
++
+ from swift.common.utils import mkdirs, normalize_timestamp, NullLogger
+ from swift.common.wsgi import monkey_patch_mimetools
+ 
+@@ -3207,7 +3216,8 @@ class TestContainerController(unittest.TestCase):
+     def test_PUT_max_container_name_length(self):
+         with save_globals():
+             controller = proxy_server.ContainerController(self.app, 'account',
+-                                                              '1' * 256)
++                                                              '1' *
++                                                               MAX_CONTAINER_NAME_LENGTH,)
+             self.assert_status_map(controller.PUT,
+                                    (200, 200, 200, 201, 201, 201), 201,
+                                    missing_container=True)
+@@ -3813,7 +3823,8 @@ class TestAccountController(unittest.TestCase):
+     def test_PUT_max_account_name_length(self):
+         with save_globals():
+             self.app.allow_account_management = True
+-            controller = proxy_server.AccountController(self.app, '1' * 256)
++            controller = proxy_server.AccountController(self.app, '1' *
++                            MAX_ACCOUNT_NAME_LENGTH)
+             self.assert_status_map(controller.PUT, (201, 201, 201), 201)
+             controller = proxy_server.AccountController(self.app, '2' * 257)
+             self.assert_status_map(controller.PUT, (201, 201, 201), 400)